Update .drone.yml

Also, allow deleting all messages/conversations in a list

.drone.yml

@@ -0,0 +1,9 @@
+kind: pipeline
+name: default
+
+steps:
+- name: test
+  image: androidsdk/android-28
+  commands:
+  - ./gradlew assemble
+  - ./gradlew check

CODE_OF_CONDUCT.md

@@ -0,0 +1,46 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at abit@dissem.ch. The project team will review and investigate all complaints, and will respond in a way that it deems appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
+
+[homepage]: https://contributor-covenant.org
+[version]: https://contributor-covenant.org/version/1/4/

CONTRIBUTING.md

@@ -0,0 +1,16 @@
+# Contributing
+
+When contributing to this repository, please first discuss the change you wish to make via issue or another method with the owners of this repository before making a change.
+
+Make sure Abit is the right place for the change - changes on the protocol level might be better placed in [Jabit](https://git.dissem.ch/bitmessage/Jabit).
+
+Please note we have a code of conduct, please follow it in all your interactions with the project.
+
+## Pull Request Process
+
+1. Ensure any install or build dependencies are removed before the end of the layer when doing a 
+   build.
+2. Update the README.md with details of changes to the interface, this includes new environment 
+   variables, exposed ports, useful file locations and container parameters.
+3. A pull request should always merge into `develop`; only releases are merged into master.
+3. A reviewer usually merges the pull requests. They may however request you to do it in case you have sufficient permissions, or may request you to update your branch to include the latest changes from `develop`.

LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
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app/build.gradle

@@ -13,13 +13,16 @@ if (project.hasProperty("project.configs")
 
 //noinspection GroovyMissingReturnStatement
 android {
-    compileSdkVersion 27
-    buildToolsVersion "26.0.2"
+    compileSdkVersion 28
+    buildToolsVersion "28.0.3"
 
+    signingConfigs {
+        release
+    }
     defaultConfig {
         applicationId "ch.dissem.apps.${appName.toLowerCase()}"
-        minSdkVersion 19
-        targetSdkVersion 27
+        minSdkVersion 21
+        targetSdkVersion 28
         versionCode 23
         versionName "1.0-rc1"
         multiDexEnabled true
@@ -51,63 +54,68 @@ android {
 
 //ext.jabitVersion = '2.0.4'
 ext.jabitVersion = 'feature-refactoring-SNAPSHOT'
-ext.supportVersion = '27.0.2'
+ext.supportVersion = '27.1.1'
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
     implementation "org.jetbrains.anko:anko:$anko_version"
 
-    implementation "com.android.support:appcompat-v7:$supportVersion"
-    implementation "com.android.support:preference-v7:$supportVersion"
-    implementation "com.android.support:cardview-v7:$supportVersion"
-    implementation "com.android.support:support-v13:$supportVersion"
-    implementation "com.android.support:preference-v14:$supportVersion"
-    implementation "com.android.support:design:$supportVersion"
-    implementation "com.android.support:multidex:1.0.2"
+    implementation 'androidx.appcompat:appcompat:1.0.0'
+    implementation 'androidx.preference:preference:1.0.0'
+    implementation 'androidx.cardview:cardview:1.0.0'
+    implementation 'androidx.legacy:legacy-support-v13:1.0.0'
+    implementation 'androidx.legacy:legacy-preference-v14:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'androidx.multidex:multidex:2.0.0'
+    implementation 'androidx.core:core-ktx:1.0.0'
+    implementation 'androidx.sqlite:sqlite-ktx:2.0.0-rc01'
+    implementation 'androidx.fragment:fragment-ktx:1.0.0'
 
     implementation "ch.dissem.jabit:jabit-core:$jabitVersion"
     implementation "ch.dissem.jabit:jabit-networking:$jabitVersion"
-    implementation "ch.dissem.jabit:jabit-cryptography-spongy:$jabitVersion"
     implementation "ch.dissem.jabit:jabit-extensions:$jabitVersion"
     implementation "ch.dissem.jabit:jabit-wif:$jabitVersion"
     implementation "ch.dissem.jabit:jabit-exports:$jabitVersion"
+    implementation "ch.dissem.jabit:jabit-cryptography-spongy:$jabitVersion"
+    testImplementation "ch.dissem.jabit:jabit-cryptography-bouncy:$jabitVersion"
 
     implementation 'org.slf4j:slf4j-android:1.7.25'
 
-    implementation 'com.mikepenz:materialize:1.1.2@aar'
-    implementation('com.mikepenz:materialdrawer:6.0.2@aar') {
+    implementation 'com.mikepenz:materialize:1.2.0-rc01@aar'
+    implementation('com.mikepenz:materialdrawer:6.1.0-rc01.2@aar') {
         transitive = true
     }
-    implementation('com.mikepenz:aboutlibraries:6.0.2@aar') {
+    implementation('com.mikepenz:aboutlibraries:6.2.0-rc01@aar') {
         transitive = true
     }
-    implementation "com.mikepenz:iconics-core:3.0.0@aar"
-    implementation "com.mikepenz:iconics-views:3.0.0@aar"
+    implementation "com.mikepenz:iconics-core:3.1.0-rc01@aar"
+    implementation "com.mikepenz:iconics-views:3.1.0-rc01@aar"
     implementation 'com.mikepenz:google-material-typeface:3.0.1.2.original@aar'
     implementation 'com.mikepenz:community-material-typeface:2.0.46.1@aar'
 
-    implementation 'com.journeyapps:zxing-android-embedded:3.5.0@aar'
-    implementation 'com.google.zxing:core:3.3.1'
+    implementation 'com.journeyapps:zxing-android-embedded:3.6.0@aar'
+    implementation 'com.google.zxing:core:3.3.3'
 
-    implementation 'com.github.kobakei:MaterialFabSpeedDial:1.1.8'
-    implementation 'com.github.amlcurran.showcaseview:library:5.4.3'
-    implementation('com.github.h6ah4i:android-advancedrecyclerview:0.11.0@aar') {
-        transitive = true
-    }
+    implementation 'com.github.kobakei:MaterialFabSpeedDial:1.2.0'
+    implementation 'com.github.deano2390:MaterialShowcaseView:1.2.0@aar'
     implementation 'com.github.angads25:filepicker:1.1.1'
-    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha2'
+
+    implementation "io.reactivex.rxjava2:rxjava:2.2.2"
+    implementation "io.reactivex.rxjava2:rxkotlin:2.3.0"
+    implementation "io.reactivex.rxjava2:rxandroid:2.1.0"
 
     testImplementation 'junit:junit:4.12'
-    testImplementation 'org.mockito:mockito-core:2.13.0'
+    testImplementation 'org.mockito:mockito-core:2.19.0'
     testImplementation 'org.hamcrest:hamcrest-library:1.3'
-    testImplementation 'com.nhaarman:mockito-kotlin-kt1.1:1.5.0'
+    testImplementation 'com.nhaarman:mockito-kotlin-kt1.1:1.6.0'
     testImplementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
-    testImplementation 'org.robolectric:robolectric:3.6.1'
-    testImplementation "org.robolectric:shadows-multidex:3.6.1"
+    testImplementation 'org.robolectric:robolectric:3.7.1'
+    testImplementation "org.robolectric:shadows-multidex:3.7.1"
 
-    androidTestImplementation "com.android.support:multidex:1.0.2"
+    androidTestImplementation "androidx.multidex:multidex:2.0.0"
 }
 
 idea.module {

app/src/main/AndroidManifest.xml

@@ -6,15 +6,15 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
     <uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
     <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
-    <uses-permission android:name="android.permission.READ_CONTACTS" />
-    <uses-permission android:name="android.permission.WRITE_CONTACTS" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 
     <application
-        android:name="android.support.multidex.MultiDexApplication"
+        android:name="androidx.multidex.MultiDexApplication"
         android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -119,23 +119,13 @@
             </intent-filter>
         </activity>
 
-        <service
-            android:name=".service.BitmessageService"
-            android:exported="false" />
         <service
             android:name=".service.ProofOfWorkService"
             android:exported="false" />
 
-        <!-- Synchronization -->
-        <provider
-            android:name=".synchronization.StubProvider"
-            android:authorities="ch.dissem.apps.abit.provider"
-            android:exported="false"
-            android:syncable="true" />
-
         <!-- Exports -->
         <provider
-            android:name="android.support.v4.content.FileProvider"
+            android:name="androidx.core.content.FileProvider"
             android:authorities="ch.dissem.apps.abit.fileprovider"
             android:exported="false"
             android:grantUriPermissions="true">
@@ -144,60 +134,32 @@
                 android:resource="@xml/file_paths" />
         </provider>
 
-        <service
-            android:name=".synchronization.AuthenticatorService"
-            android:exported="true"
-            tools:ignore="ExportedService">
-            <intent-filter>
-                <action android:name="android.accounts.AccountAuthenticator" />
-            </intent-filter>
-
-            <meta-data
-                android:name="android.accounts.AccountAuthenticator"
-                android:resource="@xml/authenticator" />
-        </service>
-        <service
-            android:name=".synchronization.SyncService"
-            android:exported="true"
-            tools:ignore="ExportedService">
-            <intent-filter>
-                <action android:name="android.content.SyncAdapter" />
-            </intent-filter>
-
-            <meta-data
-                android:name="android.content.SyncAdapter"
-                android:resource="@xml/syncadapter" />
-        </service>
         <service
             android:name=".service.BitmessageIntentService"
             android:exported="false" />
 
         <!-- Receive Wi-Fi connection state changes -->
         <receiver
-            android:name=".listener.WifiReceiver"
-            android:enabled="@bool/is_pre_api_21">
-            <intent-filter>
-                <!-- This is bad for battery life, but needed on older devices to check
-                     if WiFi is available. Let's be honest, the whole app is bad for
-                     battery life. -->
-                <action
-                    android:name="android.net.conn.CONNECTIVITY_CHANGE"
-                    tools:ignore="BatteryLife" />
-            </intent-filter>
-        </receiver>
-        <receiver
-            android:name=".service.StartServiceReceiver"
-            android:enabled="@bool/is_post_api_21">
+            android:name=".service.StartServiceReceiver">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>
         </receiver>
 
         <service
-            android:name=".service.StartupNodeOnWifiService"
+            android:name=".service.NodeStartupService"
             android:exported="true"
             android:permission="android.permission.BIND_JOB_SERVICE" />
 
+        <service
+            android:name=".service.CleanupService"
+            android:exported="true"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+
+        <service
+            android:name=".service.BatchProcessorService"
+            android:exported="false" />
+
         <activity
             android:name=".StatusActivity"
             android:label="@string/title_activity_status"

app/src/main/java/ch/dissem/apps/abit/AbstractItemListFragment.kt

@@ -18,7 +18,7 @@ package ch.dissem.apps.abit
 
 import android.content.Context
 import android.os.Bundle
-import android.support.v4.app.ListFragment
+import androidx.fragment.app.ListFragment
 import android.view.View
 import android.widget.ListView
 
@@ -27,7 +27,7 @@ import ch.dissem.apps.abit.listener.ListSelectionListener
 /**
  * @author Christian Basler
  */
-abstract class AbstractItemListFragment<L, T> : ListFragment(), ListHolder<L> {
+abstract class AbstractItemListFragment<in L, T> : ListFragment(), ListHolder<L> {
     /**
      * The fragment's current callback object, which is notified of list item
      * clicks.

app/src/main/java/ch/dissem/apps/abit/AddressDetailFragment.kt

@@ -19,13 +19,14 @@ package ch.dissem.apps.abit
 import android.app.AlertDialog
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
 import android.text.Editable
 import android.text.TextWatcher
 import android.view.*
 import android.widget.Toast
 import ch.dissem.apps.abit.service.Singleton
 import ch.dissem.apps.abit.util.Drawables
+import ch.dissem.apps.abit.util.qrCode
 import ch.dissem.bitmessage.entity.BitmessageAddress
 import ch.dissem.bitmessage.wif.WifExporter
 import com.mikepenz.community_material_typeface_library.CommunityMaterial
@@ -185,7 +186,7 @@ class AddressDetailFragment : Fragment() {
             }
 
             // QR code
-            qr_code.setImageBitmap(Drawables.qrCode(item))
+            qr_code.setImageBitmap(item.qrCode())
         }
     }
 

app/src/main/java/ch/dissem/apps/abit/AddressListFragment.kt

@@ -27,9 +27,7 @@ import android.widget.ArrayAdapter
 import android.widget.ImageView
 import android.widget.TextView
 import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.util.FabUtils
 import ch.dissem.bitmessage.entity.BitmessageAddress
-import com.google.zxing.integration.android.IntentIntegrator
 import io.github.kobakei.materialfabspeeddial.FabSpeedDialMenu
 import org.jetbrains.anko.doAsync
 import org.jetbrains.anko.uiThread
@@ -45,10 +43,11 @@ class AddressListFragment : AbstractItemListFragment<Void, BitmessageAddress>()
         super.onCreate(savedInstanceState)
 
         adapter = object : ArrayAdapter<BitmessageAddress>(
-            activity,
+            activity!!,
             R.layout.subscription_row,
             R.id.name,
-            LinkedList()) {
+            LinkedList()
+        ) {
             override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
                 val result: View
                 val v: ViewHolder
@@ -72,7 +71,8 @@ class AddressListFragment : AbstractItemListFragment<Void, BitmessageAddress>()
                     v.avatar.setImageDrawable(Identicon(item))
                     v.name.text = item.toString()
                     v.streamNumber.text = v.ctx.getString(R.string.stream_number, item.stream)
-                    v.subscribed.visibility = if (item.isSubscribed) View.VISIBLE else View.INVISIBLE
+                    v.subscribed.visibility =
+                        if (item.isSubscribed) View.VISIBLE else View.INVISIBLE
                 }
                 return result
             }
@@ -84,10 +84,10 @@ class AddressListFragment : AbstractItemListFragment<Void, BitmessageAddress>()
         super.onResume()
 
         initFab(activity as MainActivity)
-        updateList()
+        reloadList()
     }
 
-    fun updateList() {
+    override fun reloadList() {
         adapter.clear()
         context?.let { context ->
             val addressRepo = Singleton.getAddressRepository(context)
@@ -105,12 +105,13 @@ class AddressListFragment : AbstractItemListFragment<Void, BitmessageAddress>()
         val menu = FabSpeedDialMenu(activity)
         menu.add(R.string.scan_qr_code).setIcon(R.drawable.ic_action_qr_code)
         menu.add(R.string.create_contact).setIcon(R.drawable.ic_action_create_contact)
-        FabUtils.initFab(activity, R.drawable.ic_action_add_contact, menu)
+        activity.initFab(R.drawable.ic_action_add_contact, menu)
             .addOnMenuItemClickListener { _, _, itemId ->
                 when (itemId) {
-                    1 -> IntentIntegrator.forSupportFragment(this@AddressListFragment)
-                        .setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES)
-                        .initiateScan()
+                    // FIXME
+//                    1 -> IntentIntegrator.forSupportFragment(this@AddressListFragment)
+//                        .setDesiredBarcodeFormats(IntentIntegrator.QR_CODE)
+//                        .initiateScan()
                     2 -> {
                         val intent = Intent(getActivity(), CreateAddressActivity::class.java)
                         startActivity(intent)
@@ -121,7 +122,11 @@ class AddressListFragment : AbstractItemListFragment<Void, BitmessageAddress>()
             }
     }
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View =
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View =
         inflater.inflate(R.layout.fragment_address_list, container, false)
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
@@ -133,7 +138,7 @@ class AddressListFragment : AbstractItemListFragment<Void, BitmessageAddress>()
         }
     }
 
-    override fun updateList(label: Void) = updateList()
+    override fun updateList(label: Void) = reloadList()
 
     private data class ViewHolder(
         val ctx: Context,

app/src/main/java/ch/dissem/apps/abit/ComposeMessageActivity.kt

@@ -20,8 +20,8 @@ import android.app.Activity
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.Fragment
-import android.support.v7.app.AppCompatActivity
+import androidx.fragment.app.Fragment
+import androidx.appcompat.app.AppCompatActivity
 import ch.dissem.apps.abit.service.Singleton
 import ch.dissem.bitmessage.entity.Plaintext
 import ch.dissem.bitmessage.entity.Plaintext.Encoding.EXTENDED
@@ -98,7 +98,8 @@ class ComposeMessageActivity : AppCompatActivity() {
                 val prefix: String = if (subject.length >= 3 && subject.substring(0, 3).equals(
                         "RE:",
                         ignoreCase = true
-                    )) {
+                    )
+                ) {
                     ""
                 } else {
                     "RE: "
@@ -107,7 +108,7 @@ class ComposeMessageActivity : AppCompatActivity() {
             }
             replyIntent.putExtra(
                 EXTRA_CONTENT,
-                "\n\n------------------------------------------------------\n" + item.text!!
+                "\n\n------------------------------------------------------\n${item.text ?: ""}"
             )
             return replyIntent
         }

app/src/main/java/ch/dissem/apps/abit/ComposeMessageFragment.kt

@@ -20,7 +20,7 @@ import android.app.Activity.RESULT_OK
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
 import android.view.*
 import android.widget.AdapterView
 import android.widget.Toast
@@ -35,7 +35,7 @@ import ch.dissem.apps.abit.ComposeMessageActivity.Companion.EXTRA_SUBJECT
 import ch.dissem.apps.abit.adapter.ContactAdapter
 import ch.dissem.apps.abit.dialog.SelectEncodingDialogFragment
 import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.util.Preferences
+import ch.dissem.apps.abit.util.preferences
 import ch.dissem.bitmessage.entity.BitmessageAddress
 import ch.dissem.bitmessage.entity.Plaintext
 import ch.dissem.bitmessage.entity.Plaintext.Type.BROADCAST
@@ -76,7 +76,7 @@ class ComposeMessageFragment : Fragment() {
                 parents.addAll(draft.parents)
             } else {
                 var id = getSerializable(EXTRA_IDENTITY) as? BitmessageAddress
-                if (context != null && (id == null || id.privateKey == null)) {
+                if (context != null && id?.privateKey == null) {
                     id = Singleton.getIdentity(context!!)
                 }
                 if (id?.privateKey != null) {
@@ -89,13 +89,12 @@ class ComposeMessageFragment : Fragment() {
                     recipient = getSerializable(EXTRA_RECIPIENT) as BitmessageAddress
                 }
                 if (containsKey(EXTRA_SUBJECT)) {
-                    subject = getString(EXTRA_SUBJECT)
+                    subject = getString(EXTRA_SUBJECT) ?: throw IllegalStateException("EXTRA_SUBJECT expected")
                 }
                 if (containsKey(EXTRA_CONTENT)) {
-                    content = getString(EXTRA_CONTENT)
+                    content = getString(EXTRA_CONTENT) ?: throw IllegalStateException("EXTRA_CONTENT expected")
                 }
-                encoding = getSerializable(EXTRA_ENCODING) as? Plaintext.Encoding ?:
-                    Plaintext.Encoding.SIMPLE
+                encoding = getSerializable(EXTRA_ENCODING) as? Plaintext.Encoding ?: Plaintext.Encoding.SIMPLE
 
                 if (containsKey(EXTRA_PARENT)) {
                     val parent = getSerializable(EXTRA_PARENT) as Plaintext
@@ -221,7 +220,7 @@ class ComposeMessageFragment : Fragment() {
         }
         val sender = sender_input.selectedItem as? ch.dissem.bitmessage.entity.BitmessageAddress
         sender?.let { builder.from(it) }
-        if (!Preferences.requestAcknowledgements(ctx)) {
+        if (!ctx.preferences.requestAcknowledgements) {
             builder.preventAck()
         }
         when (encoding) {

app/src/main/java/ch/dissem/apps/abit/ConversationDetailFragment.kt

@@ -0,0 +1,127 @@
+/*
+ * Copyright 2016 Christian Basler
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ch.dissem.apps.abit
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.LinearLayoutManager
+import android.view.*
+import ch.dissem.apps.abit.adapter.ConversationAdapter
+import ch.dissem.apps.abit.service.Singleton
+import ch.dissem.apps.abit.util.Drawables
+import ch.dissem.bitmessage.entity.Conversation
+import com.mikepenz.google_material_typeface_library.GoogleMaterial
+import kotlinx.android.synthetic.main.fragment_conversation_detail.*
+import java.util.*
+
+/**
+ * A fragment representing a single Message detail screen.
+ * This fragment is either contained in a [MainActivity]
+ * in two-pane mode (on tablets) or a [MessageDetailActivity]
+ * on handsets.
+ */
+class ConversationDetailFragment : Fragment() {
+
+    /**
+     * The content this fragment is presenting.
+     */
+    private var itemId: UUID? = null
+    private var item: Conversation? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        arguments?.let { arguments ->
+            if (arguments.containsKey(ARG_ITEM_ID)) {
+                // Load the dummy content specified by the fragment
+                // arguments. In a real-world scenario, use a Loader
+                // to load content from a content provider.
+                itemId = arguments.getSerializable(ARG_ITEM_ID) as UUID
+            }
+        }
+        setHasOptionsMenu(true)
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View =
+        inflater.inflate(R.layout.fragment_conversation_detail, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        val ctx = activity ?: throw IllegalStateException("Fragment is not attached to an activity")
+
+        item = itemId?.let { Singleton.getConversationService(ctx).getConversation(it) }
+
+        // Show the dummy content as text in a TextView.
+        item?.let { item ->
+            subject.text = item.subject
+            avatar.setImageDrawable(MultiIdenticon(item.participants))
+            messages.adapter = ConversationAdapter(ctx, this@ConversationDetailFragment, item, Singleton.currentLabel)
+            messages.layoutManager = LinearLayoutManager(activity)
+        }
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+        inflater.inflate(R.menu.conversation, menu)
+        activity?.let { activity ->
+            Drawables.addIcon(activity, menu, R.id.delete, GoogleMaterial.Icon.gmd_delete)
+            Drawables.addIcon(activity, menu, R.id.archive, GoogleMaterial.Icon.gmd_archive)
+        }
+        super.onCreateOptionsMenu(menu, inflater)
+    }
+
+    override fun onOptionsItemSelected(menuItem: MenuItem): Boolean {
+        val messageRepo = Singleton.getMessageRepository(
+            context ?: throw IllegalStateException("No context available")
+        )
+        item?.let { item ->
+            when (menuItem.itemId) {
+                R.id.delete -> {
+                    item.messages.forEach {
+                        Singleton.labeler.delete(it)
+                        messageRepo.remove(it)
+                    }
+                    MainActivity.apply { updateUnread() }
+                    activity?.onBackPressed()
+                    return true
+                }
+                R.id.archive -> {
+                    item.messages.forEach {
+                        Singleton.labeler.archive(it)
+                        messageRepo.save(it)
+                    }
+                    MainActivity.apply { updateUnread() }
+                    return true
+                }
+                else -> return false
+            }
+        }
+        return false
+    }
+
+    companion object {
+        /**
+         * The fragment argument representing the item ID that this fragment
+         * represents.
+         */
+        const val ARG_ITEM_ID = "item_id"
+    }
+}

app/src/main/java/ch/dissem/apps/abit/ConversationListFragment.kt

@@ -0,0 +1,332 @@
+/*
+ * Copyright 2016 Christian Basler
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ch.dissem.apps.abit
+
+
+import android.content.Intent
+import android.os.Bundle
+import android.view.*
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.OnScrollListener
+import ch.dissem.apps.abit.ComposeMessageActivity.Companion.EXTRA_BROADCAST
+import ch.dissem.apps.abit.ComposeMessageActivity.Companion.EXTRA_IDENTITY
+import ch.dissem.apps.abit.adapter.EventListener
+import ch.dissem.apps.abit.adapter.SwipeToDeleteCallback
+import ch.dissem.apps.abit.adapter.SwipeableConversationAdapter
+import ch.dissem.apps.abit.listener.ListSelectionListener
+import ch.dissem.apps.abit.repository.AndroidMessageRepository
+import ch.dissem.apps.abit.service.Singleton
+import ch.dissem.apps.abit.service.Singleton.currentLabel
+import ch.dissem.apps.abit.util.preferences
+import ch.dissem.bitmessage.entity.valueobject.Label
+import ch.dissem.bitmessage.utils.ConversationService
+import io.github.kobakei.materialfabspeeddial.FabSpeedDialMenu
+import io.reactivex.disposables.Disposable
+import kotlinx.android.synthetic.main.fragment_message_list.*
+import org.jetbrains.anko.*
+import java.util.*
+
+private const val PAGE_SIZE = 15
+
+/**
+ * A list fragment representing a list of Messages. This fragment
+ * also supports tablet devices by allowing list items to be given an
+ * 'activated' state upon selection. This helps indicate which item is
+ * currently being viewed in a [MessageDetailFragment].
+ *
+ *
+ * Activities containing this fragment MUST implement the [ListSelectionListener]
+ * interface.
+ */
+class ConversationListFragment : Fragment(), ListHolder<Label> {
+
+    private var isLoading = false
+    private var isLastPage = false
+
+    private var layoutManager: LinearLayoutManager? = null
+    private var swipeableConversationAdapter: SwipeableConversationAdapter? = null
+
+    private val recyclerViewOnScrollListener = object : OnScrollListener() {
+        override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+            layoutManager?.let { layoutManager ->
+                val visibleItemCount = layoutManager.childCount
+                val totalItemCount = layoutManager.itemCount
+                val firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition()
+
+                if (!isLoading && !isLastPage) {
+                    if (visibleItemCount + firstVisibleItemPosition >= totalItemCount - 5
+                        && firstVisibleItemPosition >= 0
+                    ) {
+                        loadMoreItems()
+                    }
+                }
+            }
+        }
+    }
+
+    private var emptyTrashMenuItem: MenuItem? = null
+    private var deleteAllMenuItem: MenuItem? = null
+    private lateinit var messageRepo: AndroidMessageRepository
+    private lateinit var conversationService: ConversationService
+    private var activateOnItemClick: Boolean = false
+
+    private var subscription: Disposable? = null
+
+    override fun setActivateOnItemClick(activateOnItemClick: Boolean) {
+        swipeableConversationAdapter?.activateOnItemClick = activateOnItemClick
+        this.activateOnItemClick = activateOnItemClick
+    }
+
+    private val backStack = Stack<Label>()
+
+    fun loadMoreItems() {
+        isLoading = true
+        swipeableConversationAdapter?.let { messageAdapter ->
+            doAsync {
+                val conversationIds = messageRepo.findConversations(
+                    currentLabel.value,
+                    messageAdapter.itemCount,
+                    PAGE_SIZE,
+                    context?.preferences?.separateIdentities == true
+                )
+                conversationIds.forEach { conversationId ->
+                    val conversation = conversationService.getConversation(conversationId)
+                    uiThread {
+                        messageAdapter.add(conversation)
+                    }
+                }
+                isLoading = false
+                isLastPage = conversationIds.size < PAGE_SIZE
+            }
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setHasOptionsMenu(true)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        val activity = activity as MainActivity
+        initFab(activity)
+        messageRepo = Singleton.getMessageRepository(activity)
+        conversationService = Singleton.getConversationService(activity)
+
+        subscription = currentLabel.subscribe { new -> doUpdateList(new) }
+        doUpdateList(currentLabel.value)
+    }
+
+    override fun onPause() {
+        subscription?.dispose()
+        super.onPause()
+    }
+
+    override fun reloadList() = doUpdateList(currentLabel.value)
+
+    private fun doUpdateList(label: Label?) {
+        val mainActivity = activity as? MainActivity
+        swipeableConversationAdapter?.clear(label)
+        if (label == null) {
+            mainActivity?.updateTitle(getString(R.string.app_name))
+            swipeableConversationAdapter?.notifyDataSetChanged()
+            return
+        }
+        emptyTrashMenuItem?.isVisible = label.type == Label.Type.TRASH
+        // I'm not yet sure if it's a good idea in conversation views, so it's off for now
+        deleteAllMenuItem?.isVisible = false
+
+        MainActivity.apply {
+            if ("archive" == label.toString()) {
+                updateTitle(getString(R.string.archive))
+            } else {
+                updateTitle(label.toString())
+            }
+        }
+
+        loadMoreItems()
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View =
+        inflater.inflate(R.layout.fragment_message_list, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        val context = context ?: throw IllegalStateException("No context available")
+
+        val listener = object : EventListener {
+            override fun onItemDeleted(position: Int) {
+                swipeableConversationAdapter?.getItem(position)?.let { item ->
+                    item.messages.forEach {
+                        Singleton.labeler.delete(it)
+                        messageRepo.save(it)
+                    }
+                }
+
+                swipeableConversationAdapter?.removeAt(position)
+
+            }
+
+            override fun onItemArchived(position: Int) {
+                swipeableConversationAdapter?.getItem(position)?.let { item ->
+                    item.messages.forEach {
+                        Singleton.labeler.archive(it)
+                        messageRepo.save(it)
+                    }
+                }
+
+                swipeableConversationAdapter?.removeAt(position)
+            }
+
+            override fun onItemSelected(position: Int) {
+                swipeableConversationAdapter?.selectedPosition = position
+                if (position != RecyclerView.NO_POSITION) {
+                    swipeableConversationAdapter?.getItem(position)?.let { item ->
+                        MainActivity.apply { onItemSelected(item) }
+                    }
+                }
+            }
+        }
+        layoutManager = LinearLayoutManager(context, RecyclerView.VERTICAL, false)
+        recycler_view.layoutManager = layoutManager
+        swipeableConversationAdapter = SwipeableConversationAdapter(context).apply {
+            activateOnItemClick = this@ConversationListFragment.activateOnItemClick
+            eventListener = listener
+        }
+        recycler_view.adapter = swipeableConversationAdapter
+        recycler_view.addOnScrollListener(recyclerViewOnScrollListener)
+
+        val dirs = when (currentLabel.value?.type) {
+            Label.Type.TRASH -> ItemTouchHelper.LEFT
+            else -> ItemTouchHelper.LEFT + ItemTouchHelper.RIGHT
+        }
+
+        val swipeHandler = SwipeToDeleteCallback(context, dirs, listener)
+
+        val itemTouchHelper = ItemTouchHelper(swipeHandler)
+        itemTouchHelper.attachToRecyclerView(recycler_view)
+
+//   FIXME     Singleton.updateMessageListAdapterInListener(adapter)
+    }
+
+    private fun initFab(context: MainActivity) {
+        val menu = FabSpeedDialMenu(context)
+        menu.add(R.string.broadcast).setIcon(R.drawable.ic_action_broadcast)
+        menu.add(R.string.personal_message).setIcon(R.drawable.ic_action_personal)
+        context.initFab(R.drawable.ic_action_compose_message, menu)
+            .addOnMenuItemClickListener { _, _, itemId ->
+                val identity = Singleton.getIdentity(context)
+                if (identity == null) {
+                    Toast.makeText(
+                        activity, R.string.no_identity_warning,
+                        Toast.LENGTH_LONG
+                    ).show()
+                } else {
+                    when (itemId) {
+                        1 -> {
+                            val intent = Intent(activity, ComposeMessageActivity::class.java)
+                            intent.putExtra(EXTRA_IDENTITY, identity)
+                            intent.putExtra(EXTRA_BROADCAST, true)
+                            startActivity(intent)
+                        }
+                        2 -> {
+                            val intent = Intent(activity, ComposeMessageActivity::class.java)
+                            intent.putExtra(EXTRA_IDENTITY, identity)
+                            startActivity(intent)
+                        }
+                        else -> {
+                        }
+                    }
+                }
+            }
+    }
+
+    override fun onDestroyView() {
+        swipeableConversationAdapter = null
+        layoutManager = null
+
+        super.onDestroyView()
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+        inflater.inflate(R.menu.message_list, menu)
+        emptyTrashMenuItem = menu.findItem(R.id.empty_trash)
+        deleteAllMenuItem = menu.findItem(R.id.delete_all)
+        super.onCreateOptionsMenu(menu, inflater)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            R.id.empty_trash -> {
+                currentLabel.value?.let { label ->
+                    if (label.type != Label.Type.TRASH) return true
+
+                    deleteAllMessages(label)
+                }
+                return true
+            }
+            R.id.delete_all -> {
+                currentLabel.value?.let { label ->
+                    context?.apply {
+                        alert(
+                            R.string.delete_all_messages_in_list,
+                            R.string.delete_all_messages_in_list_ask
+                        ) {
+                            positiveButton(R.string.delete) {
+                                deleteAllMessages(label)
+                            }
+                            cancelButton { }
+                        }.show()
+                    }
+                }
+                return true
+            }
+            else -> return false
+        }
+    }
+
+    private fun deleteAllMessages(label: Label) {
+        doAsync {
+            for (message in messageRepo.findMessages(label, 0, 0, context?.preferences?.separateIdentities == true)) {
+                messageRepo.remove(message)
+            }
+
+            uiThread { doUpdateList(label) }
+        }
+    }
+
+    override fun updateList(label: Label) {
+        currentLabel.onNext(label)
+    }
+
+    override fun showPreviousList() = if (backStack.isEmpty()) {
+        false
+    } else {
+        currentLabel.onNext(backStack.pop())
+        true
+    }
+}

app/src/main/java/ch/dissem/apps/abit/CreateAddressActivity.kt

@@ -19,7 +19,7 @@ package ch.dissem.apps.abit
 import android.app.Activity
 import android.net.Uri
 import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import android.util.Base64
 import android.util.Base64.URL_SAFE
 import android.widget.Button

app/src/main/java/ch/dissem/apps/abit/DetailActivity.kt

@@ -2,8 +2,8 @@ package ch.dissem.apps.abit
 
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.NavUtils
-import android.support.v7.app.AppCompatActivity
+import androidx.core.app.NavUtils
+import androidx.appcompat.app.AppCompatActivity
 import android.view.MenuItem
 import com.mikepenz.materialize.MaterializeBuilder
 import kotlinx.android.synthetic.main.scrolling_toolbar_layout.*

app/src/main/java/ch/dissem/apps/abit/Identicon.kt

@@ -18,9 +18,11 @@ package ch.dissem.apps.abit
 
 import android.graphics.*
 import android.graphics.drawable.Drawable
+import androidx.annotation.ColorInt
 import android.text.TextPaint
-
 import ch.dissem.bitmessage.entity.BitmessageAddress
+import org.jetbrains.anko.collections.forEachWithIndex
+import kotlin.math.sqrt
 
 /**
  * @author Christian Basler
@@ -45,8 +47,20 @@ class Identicon(input: BitmessageAddress) : Drawable() {
             }
         }
     }
-    private val color = Color.HSVToColor(floatArrayOf((Math.abs(hash[0] * hash[1] + hash[2]) % 360).toFloat(), 0.8f, 1.0f))
-    private val background = Color.HSVToColor(floatArrayOf((Math.abs(hash[1] * hash[2] + hash[0]) % 360).toFloat(), 0.8f, 1.0f))
+    private val color = Color.HSVToColor(
+        floatArrayOf(
+            (Math.abs(hash[0] * hash[1] + hash[2]) % 360).toFloat(),
+            0.8f,
+            1.0f
+        )
+    )
+    private val background = Color.HSVToColor(
+        floatArrayOf(
+            (Math.abs(hash[1] * hash[2] + hash[0]) % 360).toFloat(),
+            0.8f,
+            1.0f
+        )
+    )
     private val textPaint = TextPaint().apply {
         textAlign = Paint.Align.CENTER
         color = 0xFF607D8B.toInt()
@@ -54,30 +68,34 @@ class Identicon(input: BitmessageAddress) : Drawable() {
     }
 
     override fun draw(canvas: Canvas) {
+        val width = bounds.width().toFloat()
+        val height = bounds.height().toFloat()
+        draw(canvas, 0f, 0f, width, height)
+    }
+
+    internal fun draw(canvas: Canvas, offsetX: Float, offsetY: Float, width: Float, height: Float) {
         var x: Float
         var y: Float
-        val width = canvas.width.toFloat()
-        val height = canvas.height.toFloat()
         val cellWidth = width / SIZE.toFloat()
         val cellHeight = height / SIZE.toFloat()
         paint.color = background
-        canvas.drawCircle(width / 2, height / 2, width / 2, paint)
+        canvas.drawCircle(offsetX + width / 2, offsetY + height / 2, width / 2, paint)
         paint.color = color
         for (row in 0 until SIZE) {
             for (column in 0 until SIZE) {
                 if (fields[row][column]) {
-                    x = cellWidth * column
-                    y = cellHeight * row
+                    x = offsetX + cellWidth * column
+                    y = offsetY + cellHeight * row
                     canvas.drawCircle(
-                            x + cellWidth / 2, y + cellHeight / 2, cellHeight / 2,
-                            paint
+                        x + cellWidth / 2, y + cellHeight / 2, cellHeight / 2,
+                        paint
                     )
                 }
             }
         }
         if (isChan) {
             textPaint.textSize = 2 * cellHeight
-            canvas.drawText("[isChan]", width / 2, 6.7f * cellHeight, textPaint)
+            canvas.drawText("[ chan ]", offsetX + width / 2, offsetY + 6.7f * cellHeight, textPaint)
         }
     }
 
@@ -96,3 +114,68 @@ class Identicon(input: BitmessageAddress) : Drawable() {
         private const val CENTER_COLUMN = 5
     }
 }
+
+class MultiIdenticon(input: List<BitmessageAddress>, @ColorInt private val backgroundColor: Int = 0xFFAEC2CC.toInt()) :
+    Drawable() {
+
+    private val paint = Paint().apply {
+        style = Paint.Style.FILL
+        isAntiAlias = true
+        color = backgroundColor
+    }
+
+    private val identicons = input.asSequence().sortedBy { it.isChan }.map { Identicon(it) }.take(4).toList()
+
+    override fun draw(canvas: Canvas) {
+        val width = bounds.width().toFloat()
+        val height = bounds.height().toFloat()
+
+        when (identicons.size) {
+            0 -> canvas.drawCircle(width / 2, height / 2, width / 2, paint)
+            1 -> identicons.first().draw(canvas, 0f, 0f, width, height)
+            2 -> {
+                canvas.drawCircle(width / 2, height / 2, width / 2, paint)
+                val w = width / 2
+                val h = height / 2
+                var x = 0f
+                val y = height / 4
+                identicons.forEach {
+                    it.draw(canvas, x, y, w, h)
+                    x += w
+                }
+            }
+            3 -> {
+                val scale = 2f / (1f + 2f * sqrt(3f))
+                val w = width * scale
+                val h = height * scale
+
+                canvas.drawCircle(width / 2, height / 2, width / 2, paint)
+                identicons[0].draw(canvas, (width - w) / 2, 0f, w, h)
+                identicons[1].draw(canvas, (width - 2 * w) / 2, h * sqrt(3f) / 2, w, h)
+                identicons[2].draw(canvas, width / 2, h * sqrt(3f) / 2, w, h)
+            }
+            4 -> {
+                canvas.drawCircle(width / 2, height / 2, width / 2, paint)
+                val scale = 1f / (1f + sqrt(2f))
+                val borderScale = 0.5f - scale
+                val w = width * scale
+                val h = height * scale
+                val x = width * borderScale
+                val y = height * borderScale
+                identicons.forEachWithIndex { i, identicon ->
+                    identicon.draw(canvas, x + (i % 2) * w, y + (i / 2) * h, w, h)
+                }
+            }
+        }
+    }
+
+    override fun setAlpha(alpha: Int) {
+        identicons.forEach { it.alpha = alpha }
+    }
+
+    override fun setColorFilter(colorFilter: ColorFilter?) {
+        identicons.forEach { it.colorFilter = colorFilter }
+    }
+
+    override fun getOpacity() = PixelFormat.TRANSPARENT
+}

app/src/main/java/ch/dissem/apps/abit/ImportIdentitiesFragment.kt

@@ -16,19 +16,18 @@
 
 package ch.dissem.apps.abit
 
-import android.app.Fragment
 import android.os.Bundle
-import android.support.v4.content.ContextCompat
-import android.support.v7.widget.LinearLayoutManager
-import android.support.v7.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Button
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import ch.dissem.apps.abit.adapter.AddressSelectorAdapter
 import ch.dissem.apps.abit.service.Singleton
 import ch.dissem.bitmessage.wif.WifImporter
-import com.h6ah4i.android.widget.advrecyclerview.decoration.SimpleListDividerDecorator
 import org.ini4j.InvalidFileFormatException
 import org.jetbrains.anko.longToast
 
@@ -47,34 +46,31 @@ class ImportIdentitiesFragment : Fragment() {
         inflater.inflate(R.layout.fragment_import_select_identities, container, false)
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        val ctx = activity ?: throw IllegalStateException("No activity available")
         super.onViewCreated(view, savedInstanceState)
 
-        val wifData = arguments.getString(WIF_DATA)
-        val bmc = Singleton.getBitmessageContext(activity)
+        val wifData = arguments?.getString(WIF_DATA) ?: throw IllegalStateException("No WIF data")
+        val bmc = Singleton.getBitmessageContext(ctx)
 
         try {
             importer = WifImporter(bmc, wifData)
         } catch (e: InvalidFileFormatException) {
-            longToast(R.string.invalid_wif_file)
-            activity.finish()
+            ctx.longToast(R.string.invalid_wif_file)
+            ctx.finish()
             return
         }
 
         adapter = AddressSelectorAdapter(importer.getIdentities())
         val layoutManager = LinearLayoutManager(
             activity,
-            LinearLayoutManager.VERTICAL,
+            RecyclerView.VERTICAL,
             false
         )
         val recyclerView = view.findViewById<RecyclerView>(R.id.recycler_view)
         recyclerView.layoutManager = layoutManager
         recyclerView.adapter = adapter
 
-        recyclerView.addItemDecoration(
-            SimpleListDividerDecorator(
-                ContextCompat.getDrawable(activity, R.drawable.list_divider_h), true
-            )
-        )
+        recyclerView.addItemDecoration(DividerItemDecoration(ctx, DividerItemDecoration.HORIZONTAL))
 
         view.findViewById<Button>(R.id.finish).setOnClickListener {
             importer.importAll(adapter.selected)
@@ -83,7 +79,7 @@ class ImportIdentitiesFragment : Fragment() {
                     addIdentityEntry(selected)
                 }
             }
-            activity.finish()
+            ctx.finish()
         }
     }
 

app/src/main/java/ch/dissem/apps/abit/ImportIdentityActivity.kt

@@ -17,6 +17,7 @@
 package ch.dissem.apps.abit
 
 import android.os.Bundle
+import androidx.fragment.app.transaction
 
 /**
  * @author Christian Basler
@@ -29,19 +30,20 @@ class ImportIdentityActivity : DetailActivity() {
         val wifData: String? = savedInstanceState?.getString(ImportIdentitiesFragment.WIF_DATA)
 
         if (wifData == null) {
-            fragmentManager.beginTransaction()
-                    .replace(R.id.content, InputWifFragment())
-                    .commit()
+            supportFragmentManager.transaction {
+                replace(R.id.content, InputWifFragment())
+            }
         } else {
             val bundle = Bundle()
             bundle.putString(ImportIdentitiesFragment.WIF_DATA, wifData)
 
-            val fragment = ImportIdentitiesFragment()
-            fragment.arguments = bundle
+            val fragment = ImportIdentitiesFragment().apply {
+                arguments = bundle
+            }
 
-            fragmentManager.beginTransaction()
-                    .replace(R.id.content, fragment)
-                    .commit()
+            supportFragmentManager.transaction {
+                replace(R.id.content, fragment)
+            }
         }
     }
 

app/src/main/java/ch/dissem/apps/abit/InputWifFragment.kt

@@ -16,10 +16,11 @@
 
 package ch.dissem.apps.abit
 
-import android.app.Fragment
 import android.os.Bundle
 import android.view.*
 import android.widget.Toast
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.transaction
 import com.github.angads25.filepicker.model.DialogConfigs
 import com.github.angads25.filepicker.model.DialogProperties
 import com.github.angads25.filepicker.view.FilePickerDialog
@@ -40,9 +41,9 @@ class InputWifFragment : Fragment() {
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View =
-            inflater.inflate(R.layout.fragment_import_input, container, false)
+        inflater.inflate(R.layout.fragment_import_input, container, false)
 
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         next.setOnClickListener {
             val bundle = Bundle()
@@ -52,9 +53,9 @@ class InputWifFragment : Fragment() {
                 arguments = bundle
             }
 
-            fragmentManager.beginTransaction()
-                    .replace(R.id.content, fragment)
-                    .commit()
+            fragmentManager?.transaction {
+                replace(R.id.content, fragment)
+            }
         }
     }
 
@@ -87,9 +88,9 @@ class InputWifFragment : Fragment() {
                     }
                 } catch (e: IOException) {
                     Toast.makeText(
-                            activity,
-                            R.string.error_loading_data,
-                            Toast.LENGTH_SHORT
+                        activity,
+                        R.string.error_loading_data,
+                        Toast.LENGTH_SHORT
                     ).show()
                 }
 

app/src/main/java/ch/dissem/apps/abit/ListHolder.kt

@@ -20,6 +20,8 @@ package ch.dissem.apps.abit
  * @author Christian Basler
  */
 interface ListHolder<in L> {
+    fun reloadList()
+
     fun updateList(label: L)
 
     fun setActivateOnItemClick(activateOnItemClick: Boolean)

app/src/main/java/ch/dissem/apps/abit/MainActivity.kt

@@ -17,29 +17,31 @@
 package ch.dissem.apps.abit
 
 import android.content.Intent
-import android.graphics.Point
+import android.graphics.Canvas
+import android.graphics.Paint
 import android.os.Bundle
-import android.support.v4.app.Fragment
-import android.support.v7.app.AppCompatActivity
-import android.support.v7.widget.Toolbar
 import android.view.View
-import android.view.ViewGroup
-import android.widget.RelativeLayout
+import androidx.annotation.DrawableRes
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.Toolbar
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.transaction
 import ch.dissem.apps.abit.drawer.ProfileImageListener
 import ch.dissem.apps.abit.drawer.ProfileSelectionListener
 import ch.dissem.apps.abit.listener.ListSelectionListener
 import ch.dissem.apps.abit.repository.AndroidLabelRepository.Companion.LABEL_ARCHIVE
+import ch.dissem.apps.abit.repository.AndroidMessageRepository
 import ch.dissem.apps.abit.service.Singleton
 import ch.dissem.apps.abit.service.Singleton.currentLabel
-import ch.dissem.apps.abit.synchronization.SyncAdapter
-import ch.dissem.apps.abit.util.Labels
-import ch.dissem.apps.abit.util.NetworkUtils
-import ch.dissem.apps.abit.util.Preferences
+import ch.dissem.apps.abit.util.getColor
+import ch.dissem.apps.abit.util.getIcon
+import ch.dissem.apps.abit.util.network
+import ch.dissem.apps.abit.util.preferences
 import ch.dissem.bitmessage.BitmessageContext
 import ch.dissem.bitmessage.entity.BitmessageAddress
+import ch.dissem.bitmessage.entity.Conversation
 import ch.dissem.bitmessage.entity.Plaintext
 import ch.dissem.bitmessage.entity.valueobject.Label
-import com.github.amlcurran.showcaseview.ShowcaseView
 import com.mikepenz.community_material_typeface_library.CommunityMaterial
 import com.mikepenz.google_material_typeface_library.GoogleMaterial
 import com.mikepenz.iconics.IconicsDrawable
@@ -52,9 +54,14 @@ import com.mikepenz.materialdrawer.model.interfaces.IDrawerItem
 import com.mikepenz.materialdrawer.model.interfaces.IProfile
 import com.mikepenz.materialdrawer.model.interfaces.Nameable
 import io.github.kobakei.materialfabspeeddial.FabSpeedDial
+import io.github.kobakei.materialfabspeeddial.FabSpeedDialMenu
+import io.reactivex.disposables.Disposable
 import kotlinx.android.synthetic.main.activity_main.*
 import org.jetbrains.anko.doAsync
 import org.jetbrains.anko.uiThread
+import uk.co.deanwild.materialshowcaseview.MaterialShowcaseView
+import uk.co.deanwild.materialshowcaseview.shape.Shape
+import uk.co.deanwild.materialshowcaseview.target.Target
 import java.io.Serializable
 import java.lang.ref.WeakReference
 import java.util.*
@@ -90,7 +97,10 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
     var hasDetailPane: Boolean = false
         private set
 
+    private var subscription: Disposable? = null
+
     private lateinit var bmc: BitmessageContext
+    private lateinit var messageRepo: AndroidMessageRepository
     private lateinit var accountHeader: AccountHeader
 
     private lateinit var drawer: Drawer
@@ -103,6 +113,7 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
         super.onCreate(savedInstanceState)
         instance = WeakReference(this)
         bmc = Singleton.getBitmessageContext(this)
+        messageRepo = Singleton.getMessageRepository(this)
 
         setContentView(R.layout.activity_main)
         fab.hide()
@@ -110,7 +121,7 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
         val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
 
-        val listFragment = MessageListFragment()
+        val listFragment = ConversationListFragment()
         supportFragmentManager
             .beginTransaction()
             .replace(R.id.item_list, listFragment)
@@ -140,39 +151,34 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
             ComposeMessageActivity.launchReplyTo(this, item)
         }
 
-        if (Preferences.useTrustedNode(this)) {
-            SyncAdapter.startSync(this)
-        } else {
-            SyncAdapter.stopSync(this)
-        }
         if (drawer.isDrawerOpen) {
-            val lps = RelativeLayout.LayoutParams(
-                ViewGroup
-                    .LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT
-            ).apply {
-                addRule(RelativeLayout.ALIGN_PARENT_BOTTOM)
-                addRule(RelativeLayout.ALIGN_PARENT_LEFT)
-                val margin = ((resources.displayMetrics.density * 12) as Number).toInt()
-                setMargins(margin, margin, margin, margin)
-            }
-
-            ShowcaseView.Builder(this)
-                .withMaterialShowcase()
-                .setStyle(R.style.CustomShowcaseTheme)
-                .setContentTitle(R.string.full_node)
+            MaterialShowcaseView.Builder(this)
+                .setMaskColour(R.color.colorPrimary)
+                .setTitleText(R.string.full_node)
                 .setContentText(R.string.full_node_description)
-                .setTarget {
-                    val view = drawer.stickyFooter
-                    val location = IntArray(2)
-                    view.getLocationInWindow(location)
-                    val x = location[0] + 7 * view.width / 8
-                    val y = location[1] + view.height / 2
-                    Point(x, y)
-                }
-                .replaceEndButton(R.layout.showcase_button)
-                .hideOnTouchOutside()
-                .build()
-                .setButtonPosition(lps)
+                .setDismissOnTouch(true)
+                .setDismissText(R.string.got_it)
+                .setShape(object : Shape {
+                    var w = 0
+                    var h = 0
+
+                    override fun updateTarget(target: Target) {
+                        w = target.bounds.width()
+                        h = target.bounds.height()
+                    }
+
+                    override fun getHeight() = h
+
+                    override fun draw(canvas: Canvas, paint: Paint, x: Int, y: Int, padding: Int) {
+                        val r = h.toFloat() / 2
+                        canvas.drawCircle(x + w / 2 - r * 1.8f, y.toFloat(), r, paint)
+                    }
+
+                    override fun getWidth() = w
+                })
+                .setTarget(drawer.stickyFooter)
+                .setDelay(1000)
+                .show()
         }
     }
 
@@ -252,14 +258,13 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
 
         nodeSwitch = SwitchDrawerItem()
             .withIdentifier(ID_NODE_SWITCH)
-            .withName(R.string.full_node)
+            .withName(R.string.online)
             .withIcon(CommunityMaterial.Icon.cmd_cloud_outline)
-            .withChecked(Preferences.isFullNodeActive(this))
+            .withChecked(preferences.online)
             .withOnCheckedChangeListener { _, _, isChecked ->
+                preferences.online = isChecked
                 if (isChecked) {
-                    NetworkUtils.enableNode(this@MainActivity)
-                } else {
-                    NetworkUtils.disableNode(this@MainActivity)
+                    network.enableNode(true)
                 }
             }
 
@@ -296,15 +301,16 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
 
             uiThread {
                 if (intent.hasExtra(EXTRA_SHOW_LABEL)) {
-                    currentLabel.value = intent.getSerializableExtra(EXTRA_SHOW_LABEL) as Label
+                    currentLabel.onNext(intent.getSerializableExtra(EXTRA_SHOW_LABEL) as Label)
                 } else if (currentLabel.value == null) {
-                    currentLabel.value = labels[0]
+                    currentLabel.onNext(labels[0])
                 }
+
                 for (label in labels) {
                     addLabelEntry(label)
                 }
-                currentLabel.value?.let {
-                    drawer.setSelection(it.id as Long)
+                currentLabel.value?.let { label ->
+                    drawer.setSelection(label.id as Long)
                 }
                 updateUnread()
             }
@@ -323,27 +329,32 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
             val itemList = supportFragmentManager.findFragmentById(R.id.item_list)
             val tag = item.tag
             if (tag is Label) {
-                currentLabel.value = tag
-                if (itemList !is MessageListFragment) {
-                    changeList(MessageListFragment())
+                currentLabel.onNext(tag)
+                if (tag.type == Label.Type.INBOX || tag == LABEL_ARCHIVE) {
+                    if (itemList !is ConversationListFragment) {
+                        changeList(ConversationListFragment())
+                    }
+                } else {
+                    if (itemList !is MessageListFragment) {
+                        changeList(MessageListFragment())
+                    }
                 }
                 return false
             } else if (item is Nameable<*>) {
                 when (item.name.textRes) {
                     R.string.contacts_and_subscriptions -> {
                         if (itemList is AddressListFragment) {
-                            itemList.updateList()
+                            itemList.reloadList()
                         } else {
                             changeList(AddressListFragment())
                         }
                         return false
                     }
                     R.string.settings -> {
-                        supportFragmentManager
-                            .beginTransaction()
-                            .replace(R.id.item_list, SettingsFragment())
-                            .addToBackStack(null)
-                            .commit()
+                        supportFragmentManager?.transaction {
+                            replace(R.id.item_list, SettingsFragment())
+                            addToBackStack(null)
+                        }
                         return false
                     }
                     R.string.full_node -> return true
@@ -355,14 +366,12 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
     }
 
     override fun onResume() {
+        network.enableNode(false)
         updateUnread()
-        if (Preferences.isFullNodeActive(this) && Preferences.isConnectionAllowed(this@MainActivity)) {
-            NetworkUtils.enableNode(this, false)
-        }
         Singleton.getMessageListener(this).resetNotification()
-        currentLabel.addObserver(this) { label ->
-            if (label != null && label.id is Long) {
-                drawer.setSelection(label.id as Long)
+        subscription = currentLabel.subscribe { label ->
+            if (label.id is Long) {
+                drawer.setSelection(label.id as Long, false)
             }
         }
         active = true
@@ -370,7 +379,7 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
     }
 
     override fun onPause() {
-        currentLabel.removeObserver(this)
+        subscription?.dispose()
         super.onPause()
         active = false
     }
@@ -398,8 +407,8 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
             .withIdentifier(label.id as Long)
             .withName(label.toString())
             .withTag(label)
-            .withIcon(Labels.getIcon(label))
-            .withIconColor(Labels.getColor(label))
+            .withIcon(label.getIcon())
+            .withIconColor(label.getColor(0xFF000000.toInt()))
         drawer.addItemAtPosition(item, drawer.drawerItems.size - 3)
     }
 
@@ -432,13 +441,15 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
             if (item.tag is Label) {
                 val label = item.tag as Label
                 if (label !== LABEL_ARCHIVE) {
-                    val unread = bmc.messages.countUnread(label)
+                    val unread = messageRepo.countUnread(label, preferences.separateIdentities)
                     if (unread > 0) {
                         (item as PrimaryDrawerItem).withBadge(unread.toString())
                     } else {
                         (item as PrimaryDrawerItem).withBadge(null as String?)
                     }
-                    drawer.updateItem(item)
+                    runOnUiThread {
+                        drawer.updateItem(item)
+                    }
                 }
             }
         }
@@ -454,6 +465,13 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
             // adding or replacing the detail fragment using a
             // fragment transaction.
             val fragment = when (item) {
+                is Conversation -> {
+                    ConversationDetailFragment().apply {
+                        arguments = Bundle().apply {
+                            putSerializable(ConversationDetailFragment.ARG_ITEM_ID, item.id)
+                        }
+                    }
+                }
                 is Plaintext -> {
                     if (item.labels.any { it.type == Label.Type.DRAFT }) {
                         ComposeMessageFragment().apply {
@@ -485,6 +503,11 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
             // In single-pane mode, simply start the detail activity
             // for the selected item ID.
             val detailIntent = when (item) {
+                is Conversation -> {
+                    Intent(this, MessageDetailActivity::class.java).apply {
+                        putExtra(ConversationDetailFragment.ARG_ITEM_ID, item.id)
+                    }
+                }
                 is Plaintext -> {
                     if (item.labels.any { it.type == Label.Type.DRAFT }) {
                         Intent(this, ComposeMessageActivity::class.java).apply {
@@ -518,6 +541,26 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
         supportActionBar?.title = title
     }
 
+    fun initFab(@DrawableRes drawableRes: Int, menu: FabSpeedDialMenu): FabSpeedDial {
+        val fab = floatingActionButton ?: throw IllegalStateException("Fab must not be null")
+        fab.hide()
+        fab.removeAllOnMenuItemClickListeners()
+        val mainFab = fab.mainFab
+        mainFab.setImageResource(drawableRes)
+        fab.setMenu(menu)
+        fab.addOnStateChangeListener { isOpened: Boolean ->
+            if (isOpened) {
+                // It will be turned 45 degrees, which makes an x out of the +
+                mainFab.setImageResource(R.drawable.ic_action_add)
+            } else {
+                mainFab.setImageResource(drawableRes)
+            }
+        }
+        fab.show()
+        fab.closeMenu()
+        return fab
+    }
+
     companion object {
         const val EXTRA_SHOW_MESSAGE = "ch.dissem.abit.ShowMessage"
         const val EXTRA_SHOW_LABEL = "ch.dissem.abit.ShowLabel"
@@ -531,15 +574,6 @@ class MainActivity : AppCompatActivity(), ListSelectionListener<Serializable> {
 
         private var instance: WeakReference<MainActivity>? = null
 
-        fun updateNodeSwitch() {
-            apply {
-                runOnUiThread {
-                    nodeSwitch.withChecked(Preferences.isFullNodeActive(this))
-                    drawer.updateStickyFooterItem(nodeSwitch)
-                }
-            }
-        }
-
         /**
          * Runs the given code in the main activity context, if it currently exists. Otherwise,
          * it's ignored.

app/src/main/java/ch/dissem/apps/abit/MessageDetailActivity.kt

@@ -2,8 +2,9 @@ package ch.dissem.apps.abit
 
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.NavUtils
+import androidx.core.app.NavUtils
 import android.view.MenuItem
+import ch.dissem.bitmessage.entity.Plaintext
 
 
 /**
@@ -33,13 +34,19 @@ class MessageDetailActivity : DetailActivity() {
             // Create the detail fragment and add it to the activity
             // using a fragment transaction.
             val arguments = Bundle()
-            arguments.putSerializable(MessageDetailFragment.ARG_ITEM,
-                    intent.getSerializableExtra(MessageDetailFragment.ARG_ITEM))
-            val fragment = MessageDetailFragment()
+            val item = intent.getSerializableExtra(MessageDetailFragment.ARG_ITEM)
+            arguments.putSerializable(MessageDetailFragment.ARG_ITEM, item)
+            val itemId = intent.getSerializableExtra(ConversationDetailFragment.ARG_ITEM_ID)
+            arguments.putSerializable(ConversationDetailFragment.ARG_ITEM_ID, itemId)
+            val fragment = if (item is Plaintext) {
+                MessageDetailFragment()
+            } else {
+                ConversationDetailFragment()
+            }
             fragment.arguments = arguments
             supportFragmentManager.beginTransaction()
-                    .add(R.id.content, fragment)
-                    .commit()
+                .add(R.id.content, fragment)
+                .commit()
         }
     }
 

app/src/main/java/ch/dissem/apps/abit/MessageDetailFragment.kt

@@ -19,27 +19,27 @@ package ch.dissem.apps.abit
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
-import android.support.annotation.IdRes
-import android.support.v4.app.Fragment
-import android.support.v7.widget.GridLayoutManager
-import android.support.v7.widget.LinearLayoutManager
-import android.support.v7.widget.RecyclerView
+import androidx.annotation.IdRes
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import android.text.util.Linkify
 import android.text.util.Linkify.WEB_URLS
 import android.view.*
 import android.widget.ImageView
 import android.widget.TextView
+import ch.dissem.apps.abit.adapter.LabelAdapter
 import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.util.Assets
 import ch.dissem.apps.abit.util.Constants.BITMESSAGE_ADDRESS_PATTERN
 import ch.dissem.apps.abit.util.Constants.BITMESSAGE_URL_SCHEMA
 import ch.dissem.apps.abit.util.Drawables
-import ch.dissem.apps.abit.util.Labels
 import ch.dissem.apps.abit.util.Strings.prepareMessageExtract
+import ch.dissem.apps.abit.util.getDrawable
+import ch.dissem.apps.abit.util.getString
 import ch.dissem.bitmessage.entity.Plaintext
 import ch.dissem.bitmessage.entity.valueobject.Label
 import com.mikepenz.google_material_typeface_library.GoogleMaterial
-import com.mikepenz.iconics.view.IconicsImageView
 import kotlinx.android.synthetic.main.fragment_message_detail.*
 import java.util.*
 
@@ -85,8 +85,8 @@ class MessageDetailFragment : Fragment() {
         // Show the dummy content as text in a TextView.
         item?.let { item ->
             subject.text = item.subject
-            status.setImageResource(Assets.getStatusDrawable(item.status))
-            status.contentDescription = getString(Assets.getStatusString(item.status))
+            status.setImageResource(item.status.getDrawable())
+            status.contentDescription = getString(item.status.getString())
             avatar.setImageDrawable(Identicon(item.from))
             val senderClickListener: (View) -> Unit = {
                 MainActivity.apply {
@@ -229,7 +229,7 @@ class MessageDetailFragment : Fragment() {
             val message = messages[position]
 
             viewHolder.avatar.setImageDrawable(Identicon(message.from))
-            viewHolder.status.setImageResource(Assets.getStatusDrawable(message.status))
+            viewHolder.status.setImageResource(message.status.getDrawable())
             viewHolder.sender.text = message.from.toString()
             viewHolder.extract.text = prepareMessageExtract(message.text)
             viewHolder.item = message
@@ -259,40 +259,6 @@ class MessageDetailFragment : Fragment() {
         }
     }
 
-    private class LabelAdapter internal constructor(private val ctx: Context, labels: Set<Label>) :
-        RecyclerView.Adapter<LabelAdapter.ViewHolder>() {
-
-        private val labels = labels.toMutableList()
-
-        override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): LabelAdapter.ViewHolder {
-            val context = parent.context
-            val inflater = LayoutInflater.from(context)
-
-            // Inflate the custom layout
-            val contactView = inflater.inflate(R.layout.item_label, parent, false)
-
-            // Return a new holder instance
-            return ViewHolder(contactView)
-        }
-
-        // Involves populating data into the item through holder
-        override fun onBindViewHolder(viewHolder: LabelAdapter.ViewHolder, position: Int) {
-            // Get the data model based on position
-            val label = labels[position]
-
-            viewHolder.icon.icon?.color(Labels.getColor(label))
-            viewHolder.icon.icon?.icon(Labels.getIcon(label))
-            viewHolder.label.text = Labels.getText(label, ctx)
-        }
-
-        override fun getItemCount() = labels.size
-
-        internal class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
-            var icon = itemView.findViewById<IconicsImageView>(R.id.icon)!!
-            var label = itemView.findViewById<TextView>(R.id.label)!!
-        }
-    }
-
     companion object {
         /**
          * The fragment argument representing the item ID that this fragment

app/src/main/java/ch/dissem/apps/abit/MessageListFragment.kt

@@ -19,33 +19,28 @@ package ch.dissem.apps.abit
 
 import android.content.Intent
 import android.os.Bundle
-import android.support.v4.app.Fragment
-import android.support.v4.content.ContextCompat
-import android.support.v7.widget.LinearLayoutManager
-import android.support.v7.widget.RecyclerView
-import android.support.v7.widget.RecyclerView.OnScrollListener
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.OnScrollListener
 import android.view.*
 import android.widget.Toast
 import ch.dissem.apps.abit.ComposeMessageActivity.Companion.EXTRA_BROADCAST
 import ch.dissem.apps.abit.ComposeMessageActivity.Companion.EXTRA_IDENTITY
+import ch.dissem.apps.abit.adapter.EventListener
+import ch.dissem.apps.abit.adapter.SwipeToDeleteCallback
 import ch.dissem.apps.abit.adapter.SwipeableMessageAdapter
 import ch.dissem.apps.abit.listener.ListSelectionListener
 import ch.dissem.apps.abit.repository.AndroidMessageRepository
 import ch.dissem.apps.abit.service.Singleton
 import ch.dissem.apps.abit.service.Singleton.currentLabel
-import ch.dissem.apps.abit.util.FabUtils
-import ch.dissem.bitmessage.entity.Plaintext
+import ch.dissem.apps.abit.util.preferences
 import ch.dissem.bitmessage.entity.valueobject.Label
-import com.h6ah4i.android.widget.advrecyclerview.animator.SwipeDismissItemAnimator
-import com.h6ah4i.android.widget.advrecyclerview.decoration.SimpleListDividerDecorator
-import com.h6ah4i.android.widget.advrecyclerview.swipeable.RecyclerViewSwipeManager
-import com.h6ah4i.android.widget.advrecyclerview.touchguard.RecyclerViewTouchActionGuardManager
-import com.h6ah4i.android.widget.advrecyclerview.utils.WrapperAdapterUtils
 import io.github.kobakei.materialfabspeeddial.FabSpeedDialMenu
+import io.reactivex.disposables.Disposable
 import kotlinx.android.synthetic.main.fragment_message_list.*
-import org.jetbrains.anko.doAsync
-import org.jetbrains.anko.support.v4.onUiThread
-import org.jetbrains.anko.uiThread
+import org.jetbrains.anko.*
 import java.util.*
 
 private const val PAGE_SIZE = 15
@@ -65,22 +60,22 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
     private var isLoading = false
     private var isLastPage = false
 
+    private var subscription: Disposable? = null
+
     private var layoutManager: LinearLayoutManager? = null
     private var swipeableMessageAdapter: SwipeableMessageAdapter? = null
-    private var wrappedAdapter: RecyclerView.Adapter<*>? = null
-    private var recyclerViewSwipeManager: RecyclerViewSwipeManager? = null
-    private var recyclerViewTouchActionGuardManager: RecyclerViewTouchActionGuardManager? = null
 
     private val recyclerViewOnScrollListener = object : OnScrollListener() {
-        override fun onScrolled(recyclerView: RecyclerView?, dx: Int, dy: Int) {
+        override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
             layoutManager?.let { layoutManager ->
                 val visibleItemCount = layoutManager.childCount
                 val totalItemCount = layoutManager.itemCount
                 val firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition()
 
                 if (!isLoading && !isLastPage) {
-                    if (visibleItemCount + firstVisibleItemPosition >= totalItemCount - 5
-                        && firstVisibleItemPosition >= 0) {
+                    if (visibleItemCount + firstVisibleItemPosition >= totalItemCount - PAGE_SIZE
+                        && firstVisibleItemPosition >= 0
+                    ) {
                         loadMoreItems()
                     }
                 }
@@ -89,17 +84,29 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
     }
 
     private var emptyTrashMenuItem: MenuItem? = null
+    private var deleteAllMenuItem: MenuItem? = null
     private lateinit var messageRepo: AndroidMessageRepository
     private var activateOnItemClick: Boolean = false
 
+    override fun setActivateOnItemClick(activateOnItemClick: Boolean) {
+        swipeableMessageAdapter?.activateOnItemClick = activateOnItemClick
+        this.activateOnItemClick = activateOnItemClick
+    }
+
     private val backStack = Stack<Label>()
 
     fun loadMoreItems() {
         isLoading = true
         swipeableMessageAdapter?.let { messageAdapter ->
             doAsync {
-                val messages = messageRepo.findMessages(currentLabel.value, messageAdapter.itemCount, PAGE_SIZE)
-                onUiThread {
+                val label = currentLabel.value
+                val messages = messageRepo.findMessages(
+                    label,
+                    messageAdapter.itemCount,
+                    PAGE_SIZE,
+                    context?.preferences?.separateIdentities == true && label?.type != Label.Type.BROADCAST
+                )
+                uiThread {
                     messageAdapter.addAll(messages)
                     isLoading = false
                     isLastPage = messages.size < PAGE_SIZE
@@ -120,36 +127,47 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
         initFab(activity)
         messageRepo = Singleton.getMessageRepository(activity)
 
-        currentLabel.addObserver(this) { new -> doUpdateList(new) }
+        subscription = currentLabel.subscribe { new -> doUpdateList(new) }
         doUpdateList(currentLabel.value)
     }
 
     override fun onPause() {
-        currentLabel.removeObserver(this)
+        subscription?.dispose()
         super.onPause()
     }
 
-    private fun doUpdateList(label: Label?) {
-        val mainActivity = activity as? MainActivity
-        swipeableMessageAdapter?.clear(label)
-        if (label == null) {
-            mainActivity?.updateTitle(getString(R.string.app_name))
-            swipeableMessageAdapter?.notifyDataSetChanged()
-            return
-        }
-        emptyTrashMenuItem?.isVisible = label.type == Label.Type.TRASH
-        mainActivity?.apply {
-            if ("archive" == label.toString()) {
-                updateTitle(getString(R.string.archive))
-            } else {
-                updateTitle(label.toString())
-            }
-        }
+    override fun reloadList() = doUpdateList(currentLabel.value)
 
-        loadMoreItems()
+    private fun doUpdateList(label: Label?) {
+        // If the menu item isn't available yet, we should wait - the method will be called again once it's
+        // initialized.
+        emptyTrashMenuItem?.let { menuItem ->
+            val mainActivity = activity as? MainActivity
+            swipeableMessageAdapter?.clear(label)
+            if (label == null) {
+                mainActivity?.updateTitle(getString(R.string.app_name))
+                swipeableMessageAdapter?.notifyDataSetChanged()
+                return
+            }
+            menuItem.isVisible = label.type == Label.Type.TRASH
+            MainActivity.apply {
+                if ("archive" == label.toString()) {
+                    updateTitle(getString(R.string.archive))
+                } else {
+                    updateTitle(label.toString())
+                }
+            }
+
+            loadMoreItems()
+        }
+        deleteAllMenuItem?.isVisible = label?.type != Label.Type.TRASH
     }
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View =
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View =
         inflater.inflate(R.layout.fragment_message_list, container, false)
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -157,90 +175,51 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
 
         val context = context ?: throw IllegalStateException("No context available")
 
-        layoutManager = LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false)
-
-        // touch guard manager  (this class is required to suppress scrolling while swipe-dismiss
-        // animation is running)
-        val touchActionGuardManager = RecyclerViewTouchActionGuardManager().apply {
-            setInterceptVerticalScrollingWhileAnimationRunning(true)
-            isEnabled = true
-        }
-
-        // swipe manager
-        val swipeManager = RecyclerViewSwipeManager()
-
-        //swipeableMessageAdapter
-        val adapter = SwipeableMessageAdapter().apply {
-            setActivateOnItemClick(activateOnItemClick)
-        }
-        adapter.eventListener = object : SwipeableMessageAdapter.EventListener {
-            override fun onItemDeleted(item: Plaintext) {
-                if (MessageDetailFragment.isInTrash(item)) {
-                    Singleton.labeler.delete(item)
-                    messageRepo.remove(item)
-                } else {
-                    Singleton.labeler.delete(item)
-                    messageRepo.save(item)
-                }
-            }
-
-            override fun onItemArchived(item: Plaintext) {
-                Singleton.labeler.archive(item)
-            }
-
-            override fun onItemViewClicked(v: View?) {
-                val position = recycler_view.getChildAdapterPosition(v)
-                adapter.setSelectedPosition(position)
-                if (position != RecyclerView.NO_POSITION) {
-                    val item = adapter.getItem(position)
-                    (activity as MainActivity).onItemSelected(item)
-                }
-            }
-        }
-
-        // wrap for swiping
-        wrappedAdapter = swipeManager.createWrappedAdapter(adapter)
-
-        val animator = SwipeDismissItemAnimator()
-
-        // Change animations are enabled by default since support-v7-recyclerview v22.
-        // Disable the change animation in order to make turning back animation of swiped item
-        // works properly.
-        animator.supportsChangeAnimations = false
-
+        layoutManager = LinearLayoutManager(context, RecyclerView.VERTICAL, false)
         recycler_view.layoutManager = layoutManager
-        recycler_view.adapter = wrappedAdapter  // requires *wrapped* swipeableMessageAdapter
-        recycler_view.itemAnimator = animator
+        swipeableMessageAdapter = SwipeableMessageAdapter(context).apply {
+            activateOnItemClick = this@MessageListFragment.activateOnItemClick
+        }
+        recycler_view.adapter = swipeableMessageAdapter  // requires *wrapped* swipeableMessageAdapter
         recycler_view.addOnScrollListener(recyclerViewOnScrollListener)
 
-        recycler_view.addItemDecoration(SimpleListDividerDecorator(
-            ContextCompat.getDrawable(context, R.drawable.list_divider_h), true))
+        val dirs = when (currentLabel.value?.type) {
+            Label.Type.TRASH -> ItemTouchHelper.LEFT
+            else -> ItemTouchHelper.LEFT + ItemTouchHelper.RIGHT
+        }
 
-        // NOTE:
-        // The initialization order is very important! This order determines the priority of
-        // touch event handling.
-        //
-        // priority: TouchActionGuard > Swipe > DragAndDrop
-        touchActionGuardManager.attachRecyclerView(recycler_view)
-        swipeManager.attachRecyclerView(recycler_view)
+        val swipeHandler = SwipeToDeleteCallback(context, dirs, object : EventListener {
+            override fun onItemDeleted(position: Int) {
+                context.toast("Deleted")
+            }
 
-        recyclerViewTouchActionGuardManager = touchActionGuardManager
-        recyclerViewSwipeManager = swipeManager
-        this.swipeableMessageAdapter = adapter
+            override fun onItemArchived(position: Int) {
+                context.toast("Archived")
+            }
 
-        Singleton.updateMessageListAdapterInListener(adapter)
+            override fun onItemSelected(position: Int) {
+                context.toast("Selected")
+            }
+        })
+
+        val itemTouchHelper = ItemTouchHelper(swipeHandler)
+        itemTouchHelper.attachToRecyclerView(recycler_view)
+
+//   FIXME     Singleton.updateMessageListAdapterInListener(adapter)
     }
 
     private fun initFab(context: MainActivity) {
         val menu = FabSpeedDialMenu(context)
         menu.add(R.string.broadcast).setIcon(R.drawable.ic_action_broadcast)
         menu.add(R.string.personal_message).setIcon(R.drawable.ic_action_personal)
-        FabUtils.initFab(context, R.drawable.ic_action_compose_message, menu)
+        context.initFab(R.drawable.ic_action_compose_message, menu)
             .addOnMenuItemClickListener { _, _, itemId ->
                 val identity = Singleton.getIdentity(context)
                 if (identity == null) {
-                    Toast.makeText(activity, R.string.no_identity_warning,
-                        Toast.LENGTH_LONG).show()
+                    Toast.makeText(
+                        activity, R.string.no_identity_warning,
+                        Toast.LENGTH_LONG
+                    ).show()
                 } else {
                     when (itemId) {
                         1 -> {
@@ -262,18 +241,6 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
     }
 
     override fun onDestroyView() {
-        recyclerViewSwipeManager?.release()
-        recyclerViewSwipeManager = null
-
-        recyclerViewTouchActionGuardManager?.release()
-        recyclerViewTouchActionGuardManager = null
-
-        recycler_view.itemAnimator = null
-        recycler_view.adapter = null
-
-        wrappedAdapter?.let { WrapperAdapterUtils.releaseAll(it) }
-        wrappedAdapter = null
-
         swipeableMessageAdapter = null
         layoutManager = null
 
@@ -283,6 +250,8 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
         inflater.inflate(R.menu.message_list, menu)
         emptyTrashMenuItem = menu.findItem(R.id.empty_trash)
+        deleteAllMenuItem = menu.findItem(R.id.delete_all)
+//        currentLabel.value?.let { doUpdateList(it) }
         super.onCreateOptionsMenu(menu, inflater)
     }
 
@@ -292,12 +261,22 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
                 currentLabel.value?.let { label ->
                     if (label.type != Label.Type.TRASH) return true
 
-                    doAsync {
-                        for (message in messageRepo.findMessages(label)) {
-                            messageRepo.remove(message)
-                        }
-
-                        uiThread { doUpdateList(label) }
+                    deleteAllMessages(label)
+                }
+                return true
+            }
+            R.id.delete_all -> {
+                currentLabel.value?.let { label ->
+                    context?.apply {
+                        alert(
+                            R.string.delete_all_messages_in_list,
+                            R.string.delete_all_messages_in_list_ask
+                        ) {
+                            positiveButton(R.string.delete) {
+                                deleteAllMessages(label)
+                            }
+                            cancelButton { }
+                        }.show()
                     }
                 }
                 return true
@@ -306,19 +285,24 @@ class MessageListFragment : Fragment(), ListHolder<Label> {
         }
     }
 
-    override fun updateList(label: Label) {
-        currentLabel.value = label
+    private fun deleteAllMessages(label: Label) {
+        doAsync {
+            for (message in messageRepo.findMessages(label, 0, 0, context?.preferences?.separateIdentities == true)) {
+                messageRepo.remove(message)
+            }
+
+            uiThread { doUpdateList(label) }
+        }
     }
 
-    override fun setActivateOnItemClick(activateOnItemClick: Boolean) {
-        swipeableMessageAdapter?.setActivateOnItemClick(activateOnItemClick)
-        this.activateOnItemClick = activateOnItemClick
+    override fun updateList(label: Label) {
+        currentLabel.onNext(label)
     }
 
     override fun showPreviousList() = if (backStack.isEmpty()) {
         false
     } else {
-        currentLabel.value = backStack.pop()
+        currentLabel.onNext(backStack.pop())
         true
     }
 }

app/src/main/java/ch/dissem/apps/abit/SettingsFragment.kt

@@ -17,42 +17,57 @@
 package ch.dissem.apps.abit
 
 import android.app.Activity
+import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
-import android.content.SharedPreferences
+import android.content.ServiceConnection
 import android.os.Bundle
-import android.preference.PreferenceManager
-import android.support.v4.content.FileProvider.getUriForFile
-import android.support.v7.preference.Preference
-import android.support.v7.preference.PreferenceFragmentCompat
+import android.os.IBinder
 import android.widget.Toast
+import androidx.core.content.FileProvider.getUriForFile
+import androidx.preference.Preference
+import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SwitchPreferenceCompat
+import ch.dissem.apps.abit.service.BatchProcessorService
+import ch.dissem.apps.abit.service.SimpleJob
 import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.synchronization.SyncAdapter
-import ch.dissem.apps.abit.util.Constants.PREFERENCE_SERVER_POW
-import ch.dissem.apps.abit.util.Constants.PREFERENCE_TRUSTED_NODE
 import ch.dissem.apps.abit.util.Exports
-import ch.dissem.apps.abit.util.Preferences
+import ch.dissem.apps.abit.util.network
+import ch.dissem.apps.abit.util.preferences
+import ch.dissem.bitmessage.entity.Plaintext
 import com.mikepenz.aboutlibraries.Libs
 import com.mikepenz.aboutlibraries.LibsBuilder
 import org.jetbrains.anko.doAsync
-import org.jetbrains.anko.support.v4.indeterminateProgressDialog
-import org.jetbrains.anko.support.v4.startActivity
+import org.jetbrains.anko.indeterminateProgressDialog
+import org.jetbrains.anko.startActivity
 import org.jetbrains.anko.uiThread
+import java.util.*
 
 /**
  * @author Christian Basler
  */
-class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedPreferenceChangeListener {
+class SettingsFragment : PreferenceFragmentCompat() {
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
-        addPreferencesFromResource(R.xml.preferences)
+        setPreferencesFromResource(R.xml.preferences, rootKey)
 
         findPreference("about")?.onPreferenceClickListener = aboutClickListener()
-        val cleanup = findPreference("cleanup")
-        cleanup?.onPreferenceClickListener = cleanupClickListener(cleanup)
+        findPreference("cleanup")?.let { it.onPreferenceClickListener = cleanupClickListener(it) }
         findPreference("export")?.onPreferenceClickListener = exportClickListener()
         findPreference("import")?.onPreferenceClickListener = importClickListener()
-        findPreference("status").onPreferenceClickListener = statusClickListener()
+        findPreference("status")?.onPreferenceClickListener = statusClickListener()
+
+        connectivityChangeListener().let {
+            findPreference("wifi_only")?.onPreferenceChangeListener = it
+            findPreference("require_charging")?.onPreferenceChangeListener = it
+        }
+
+        val emulateConversations = findPreference("emulate_conversations") as? SwitchPreferenceCompat
+        val conversationInit = findPreference("emulate_conversations_initialize")
+
+        emulateConversations?.onPreferenceChangeListener = emulateConversationChangeListener(conversationInit)
+        conversationInit?.onPreferenceClickListener = conversationInitClickListener()
+        conversationInit?.isEnabled = emulateConversations?.isChecked ?: false
     }
 
     private fun aboutClickListener() = Preference.OnPreferenceClickListener {
@@ -73,7 +88,8 @@ class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedP
     }
 
     private fun cleanupClickListener(cleanup: Preference) = Preference.OnPreferenceClickListener {
-        val ctx = activity?.applicationContext ?: throw IllegalStateException("Context not available")
+        val ctx = activity?.applicationContext
+            ?: throw IllegalStateException("Context not available")
         cleanup.isEnabled = false
         Toast.makeText(ctx, R.string.cleanup_notification_start, Toast.LENGTH_SHORT).show()
 
@@ -81,7 +97,7 @@ class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedP
             val bmc = Singleton.getBitmessageContext(ctx)
             bmc.internals.nodeRegistry.clear()
             bmc.cleanup()
-            Preferences.cleanupExportDirectory(ctx)
+            ctx.preferences.cleanupExportDirectory()
 
             uiThread {
                 Toast.makeText(
@@ -96,11 +112,11 @@ class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedP
     }
 
     private fun exportClickListener() = Preference.OnPreferenceClickListener {
-        val ctx = context ?: throw IllegalStateException("No context available")
+        val ctx = activity ?: throw IllegalStateException("No context available")
 
-        indeterminateProgressDialog(R.string.export_data_summary, R.string.export_data).apply {
+        ctx.indeterminateProgressDialog(R.string.export_data_summary, R.string.export_data).apply {
             doAsync {
-                val exportDirectory = Preferences.getExportDirectory(ctx)
+                val exportDirectory = ctx.preferences.exportDirectory
                 exportDirectory.mkdirs()
                 val file = Exports.exportData(exportDirectory, ctx)
                 val contentUri = getUriForFile(ctx, "ch.dissem.apps.abit.fileprovider", file)
@@ -131,20 +147,20 @@ class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedP
         if (activity.hasDetailPane) {
             activity.setDetailView(StatusFragment())
         } else {
-            startActivity<StatusActivity>()
+            activity.startActivity<StatusActivity>()
         }
         return@OnPreferenceClickListener true
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        val ctx = context ?: throw IllegalStateException("No context available")
+        val ctx = activity ?: throw IllegalStateException("No context available")
         when (requestCode) {
-            WRITE_EXPORT_REQUEST_CODE -> Preferences.cleanupExportDirectory(ctx)
+            WRITE_EXPORT_REQUEST_CODE -> ctx.preferences.cleanupExportDirectory()
             READ_IMPORT_REQUEST_CODE -> {
                 if (resultCode == Activity.RESULT_OK && data?.data != null) {
-                    indeterminateProgressDialog(R.string.import_data_summary, R.string.import_data).apply {
+                    ctx.indeterminateProgressDialog(R.string.import_data_summary, R.string.import_data).apply {
                         doAsync {
-                            Exports.importData(data.data, ctx)
+                            Exports.importData(data.data!!, ctx)
                             uiThread {
                                 dismiss()
                             }
@@ -157,42 +173,91 @@ class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedP
 
     override fun onAttach(ctx: Context?) {
         super.onAttach(ctx)
-        (ctx as? MainActivity)?.floatingActionButton?.hide()
-        PreferenceManager.getDefaultSharedPreferences(ctx)
-            .registerOnSharedPreferenceChangeListener(this)
-
-        (ctx as? MainActivity)?.updateTitle(getString(R.string.settings))
-    }
-
-    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String) {
-        when (key) {
-            PREFERENCE_TRUSTED_NODE -> toggleSyncTrustedNode(sharedPreferences)
-            PREFERENCE_SERVER_POW -> toggleSyncServerPOW(sharedPreferences)
-        }
-    }
-
-    private fun toggleSyncTrustedNode(sharedPreferences: SharedPreferences) {
-        val node = sharedPreferences.getString(PREFERENCE_TRUSTED_NODE, null)
-        val ctx = context ?: throw IllegalStateException("No context available")
-        if (node != null) {
-            SyncAdapter.startSync(ctx)
-        } else {
-            SyncAdapter.stopSync(ctx)
-        }
-    }
-
-    private fun toggleSyncServerPOW(sharedPreferences: SharedPreferences) {
-        val node = sharedPreferences.getString(PREFERENCE_TRUSTED_NODE, null)
-        if (node != null) {
-            val ctx = context ?: throw IllegalStateException("No context available")
-            if (sharedPreferences.getBoolean(PREFERENCE_SERVER_POW, false)) {
-                SyncAdapter.startPowSync(ctx)
-            } else {
-                SyncAdapter.stopPowSync(ctx)
+        ctx?.let {
+            if (it is MainActivity) {
+                it.floatingActionButton?.hide()
+                it.updateTitle(getString(R.string.settings))
             }
         }
     }
 
+    private val connection = object : ServiceConnection {
+        override fun onServiceConnected(name: ComponentName, service: IBinder) {
+            if (service is BatchProcessorService.BatchBinder) {
+                val messageRepo = Singleton.getMessageRepository(service.service)
+                val conversationService = Singleton.getConversationService(service.service)
+
+                service.process(
+                    SimpleJob<Plaintext>(
+                        messageRepo.count(),
+                        { messageRepo.findNextLegacyMessages(it) },
+                        { msg ->
+                            if (msg.encoding == Plaintext.Encoding.SIMPLE) {
+                                conversationService.getSubject(listOf(msg))?.let { subject ->
+                                    msg.conversationId = UUID.nameUUIDFromBytes(subject.toByteArray())
+                                    messageRepo.save(msg)
+                                    Thread.yield()
+                                }
+                            }
+                        },
+                        R.drawable.ic_notification_batch,
+                        R.string.emulate_conversations_batch
+                    )
+                )
+            }
+        }
+
+        override fun onServiceDisconnected(name: ComponentName) {
+        }
+    }
+
+    private fun conversationInitClickListener() = Preference.OnPreferenceClickListener {
+        val ctx = activity?.applicationContext
+            ?: throw IllegalStateException("Context not available")
+        ctx.bindService(Intent(ctx, BatchProcessorService::class.java), connection, Context.BIND_AUTO_CREATE)
+        true
+    }
+
+    private fun emulateConversationChangeListener(conversationInit: Preference?) =
+        Preference.OnPreferenceChangeListener { _, newValue ->
+            conversationInit?.isEnabled = newValue as Boolean
+            true
+        }
+
+    private fun connectivityChangeListener() =
+        Preference.OnPreferenceChangeListener { _, _ ->
+            activity?.network?.scheduleNodeStart()
+            true
+        }
+
+    // The why-is-it-so-damn-hard-to-group-preferences section
+    // FIXME: maybe this is once again necessary, maybe not. Test!
+//    override fun getCallbackFragment(): Fragment = this
+//
+//    override fun onPreferenceStartScreen(
+//        preferenceFragmentCompat: PreferenceFragment,
+//        preferenceScreen: PreferenceScreen
+//    ): Boolean {
+//        fragmentManager?.beginTransaction()?.let { ft ->
+//            val fragment = SettingsFragment()
+//            fragment.arguments = Bundle().apply {
+//                putString(PreferenceFragment.ARG_PREFERENCE_ROOT, preferenceScreen.key)
+//            }
+//            ft.add(R.id.item_list, fragment, preferenceScreen.key)
+//            ft.addToBackStack(preferenceScreen.key)
+//            ft.commit()
+//        }
+//        return true
+//    }
+//
+//    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+//        super.onViewCreated(view, savedInstanceState)
+//        context?.let { ctx -> view.setBackgroundColor(ContextCompat.getColor(ctx, R.color.contentBackground)) }
+//    }
+    // End of the why-is-it-so-damn-hard-to-group-preferences section
+    // Afterthought: here it looks so simple: https://developer.android.com/guide/topics/ui/settings.html
+    // Remind me, why do we need to use PreferenceFragmentCompat?
+
     companion object {
         const val WRITE_EXPORT_REQUEST_CODE = 1
         const val READ_IMPORT_REQUEST_CODE = 2

app/src/main/java/ch/dissem/apps/abit/StatusActivity.kt

@@ -17,7 +17,7 @@
 package ch.dissem.apps.abit
 
 import android.os.Bundle
-import android.support.v7.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatActivity
 import ch.dissem.apps.abit.service.Singleton
 import com.mikepenz.materialize.MaterializeBuilder
 import kotlinx.android.synthetic.main.activity_status.*

app/src/main/java/ch/dissem/apps/abit/StatusFragment.kt

@@ -17,7 +17,7 @@
 package ch.dissem.apps.abit
 
 import android.os.Bundle
-import android.support.v4.app.Fragment
+import androidx.fragment.app.Fragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup

app/src/main/java/ch/dissem/apps/abit/adapter/AddressSelectorAdapter.kt

@@ -16,7 +16,7 @@
 
 package ch.dissem.apps.abit.adapter
 
-import android.support.v7.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -31,7 +31,7 @@ import java.util.*
  */
 class AddressSelectorAdapter(identities: List<BitmessageAddress>) : RecyclerView.Adapter<AddressSelectorAdapter.ViewHolder>() {
 
-    private val data = identities.map { Selectable(it) }.toMutableList()
+    private val data = identities.asSequence().map { Selectable(it) }.toMutableList()
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
@@ -63,7 +63,7 @@ class AddressSelectorAdapter(identities: List<BitmessageAddress>) : RecyclerView
 
     val selected: List<BitmessageAddress>
         get() {
-            return data
+            return data.asSequence()
                 .filter { it.selected }
                 .mapTo(LinkedList()) { it.data }
         }

app/src/main/java/ch/dissem/apps/abit/adapter/AndroidCryptography.kt

@@ -1,29 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.adapter
-
-import ch.dissem.apps.abit.util.PRNGFixes
-import ch.dissem.bitmessage.cryptography.sc.SpongyCryptography
-
-/**
- * @author Christian Basler
- */
-class AndroidCryptography : SpongyCryptography() {
-    init {
-        PRNGFixes.apply()
-    }
-}

app/src/main/java/ch/dissem/apps/abit/adapter/ContactAdapter.kt

@@ -142,5 +142,4 @@ class ContactAdapter(
         }
     }
 
-    fun indexOf(element: BitmessageAddress) = originalData.indexOf(element)
 }

app/src/main/java/ch/dissem/apps/abit/adapter/ConversationAdapter.kt

@@ -0,0 +1,162 @@
+package ch.dissem.apps.abit.adapter
+
+import android.content.Context
+import android.text.util.Linkify
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.appcompat.widget.PopupMenu
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.GridLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import ch.dissem.apps.abit.*
+import ch.dissem.apps.abit.service.Singleton
+import ch.dissem.apps.abit.util.Constants
+import ch.dissem.apps.abit.util.getDrawable
+import ch.dissem.bitmessage.entity.Conversation
+import ch.dissem.bitmessage.entity.Plaintext
+import ch.dissem.bitmessage.entity.valueobject.Label
+import ch.dissem.bitmessage.ports.MessageRepository
+import io.reactivex.subjects.BehaviorSubject
+
+
+class ConversationAdapter internal constructor(
+    ctx: Context,
+    private val parent: Fragment,
+    conversation: Conversation,
+    label: BehaviorSubject<Label>
+) : RecyclerView.Adapter<ConversationAdapter.ViewHolder>() {
+
+    private val messageRepo = Singleton.getMessageRepository(ctx)
+
+    private var filteredMessages = label.value?.let { l -> conversation.messages.filter { m -> m.labels.any { it == l } } } ?: emptyList()
+
+    override fun onCreateViewHolder(
+        parent: ViewGroup,
+        viewType: Int
+    ): ConversationAdapter.ViewHolder {
+        val context = parent.context
+        val inflater = LayoutInflater.from(context)
+
+        // Inflate the custom layout
+        val messageView = inflater.inflate(R.layout.item_message_detail, parent, false)
+
+        // Return a new holder instance
+        return ViewHolder(messageView, this.parent, messageRepo)
+    }
+
+    // Involves populating data into the item through holder
+    override fun onBindViewHolder(viewHolder: ConversationAdapter.ViewHolder, position: Int) {
+        // Get the data model based on position
+        val message = filteredMessages[position]
+
+        viewHolder.apply {
+            item = message
+            avatar.setImageDrawable(Identicon(message.from))
+            sender.text = message.from.toString()
+            val senderClickListener: (View) -> Unit = {
+                MainActivity.apply {
+                    onItemSelected(message.from)
+                }
+            }
+            avatar.setOnClickListener(senderClickListener)
+            sender.setOnClickListener(senderClickListener)
+
+            recipient.text = message.to.toString()
+            status.setImageResource(message.status.getDrawable())
+            text.text = message.text
+
+            Linkify.addLinks(text, Linkify.WEB_URLS)
+            Linkify.addLinks(text,
+                Constants.BITMESSAGE_ADDRESS_PATTERN,
+                Constants.BITMESSAGE_URL_SCHEMA, null,
+                Linkify.TransformFilter { match, _ -> match.group() }
+            )
+
+            labelAdapter.labels = message.labels.toList()
+
+            // FIXME: I think that's not quite correct
+            if (message.isUnread()) {
+                Singleton.labeler.markAsRead(message)
+                messageRepo.save(message)
+                MainActivity.apply { updateUnread() }
+            }
+
+        }
+    }
+
+    override fun getItemCount() = filteredMessages.size
+
+    inner class ViewHolder(
+        itemView: View,
+        parent: Fragment,
+        messageRepo: MessageRepository
+    ) : RecyclerView.ViewHolder(itemView) {
+        var item: Plaintext? = null
+        val avatar = itemView.findViewById<ImageView>(R.id.avatar)!!
+        val sender = itemView.findViewById<TextView>(R.id.sender)!!
+        val recipient = itemView.findViewById<TextView>(R.id.recipient)!!
+        val status = itemView.findViewById<ImageView>(R.id.status)!!
+        val menu = itemView.findViewById<ImageView>(R.id.menu)!!.apply {
+            setOnClickListener { view ->
+                PopupMenu(itemView.context, view).apply {
+
+                    menuInflater.inflate(R.menu.message, menu)
+                    setOnMenuItemClickListener { menuItem ->
+                        item?.let { item ->
+                            when (menuItem.itemId) {
+                                R.id.reply -> {
+                                    ComposeMessageActivity.launchReplyTo(parent, item)
+                                    true
+                                }
+                                R.id.delete -> {
+                                    if (MessageDetailFragment.isInTrash(item)) {
+                                        Singleton.labeler.delete(item)
+                                        messageRepo.remove(item)
+                                    } else {
+                                        Singleton.labeler.delete(item)
+                                        messageRepo.save(item)
+                                    }
+                                    filteredMessages.indexOf(item).let { i ->
+                                        filteredMessages -= item
+                                        notifyItemRemoved(i)
+                                    }
+                                    MainActivity.apply {
+                                        updateUnread()
+                                    }
+                                    true
+                                }
+                                R.id.mark_unread -> {
+                                    Singleton.labeler.markAsUnread(item)
+                                    messageRepo.save(item)
+                                    MainActivity.apply { updateUnread() }
+                                    true
+                                }
+                                R.id.archive -> {
+                                    Singleton.labeler.archive(item)
+                                    messageRepo.save(item)
+                                    MainActivity.apply { updateUnread() }
+                                    true
+                                }
+                                else -> false
+                            }
+                        } ?: false
+                    }
+                    show()
+
+                }
+            }
+        }
+        val text = itemView.findViewById<TextView>(R.id.text)!!.apply {
+            linksClickable = true
+            setTextIsSelectable(true)
+        }
+        val labelAdapter = LabelAdapter(itemView.context, emptySet())
+        val labels = itemView.findViewById<RecyclerView>(R.id.labels)!!.apply {
+            adapter = labelAdapter
+            layoutManager = GridLayoutManager(itemView.context, 2)
+        }
+    }
+}

app/src/main/java/ch/dissem/apps/abit/adapter/LabelAdapter.kt

@@ -0,0 +1,54 @@
+package ch.dissem.apps.abit.adapter
+
+import android.content.Context
+import android.content.res.ColorStateList
+import androidx.annotation.ColorInt
+import androidx.recyclerview.widget.RecyclerView
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import ch.dissem.apps.abit.R
+import ch.dissem.apps.abit.util.getColor
+import ch.dissem.apps.abit.util.getIcon
+import ch.dissem.apps.abit.util.getText
+import ch.dissem.bitmessage.entity.valueobject.Label
+import com.mikepenz.iconics.view.IconicsImageView
+
+class LabelAdapter internal constructor(private val ctx: Context, labels: Collection<Label>) :
+    RecyclerView.Adapter<LabelAdapter.ViewHolder>() {
+
+    var labels = labels.toList()
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): LabelAdapter.ViewHolder {
+        val context = parent.context
+        val inflater = LayoutInflater.from(context)
+
+        // Inflate the custom layout
+        val contactView = inflater.inflate(R.layout.item_label, parent, false)
+
+        // Return a new holder instance
+        return ViewHolder(contactView)
+    }
+
+    // Involves populating data into the item through holder
+    override fun onBindViewHolder(viewHolder: LabelAdapter.ViewHolder, position: Int) {
+        // Get the data model based on position
+        val label = labels[position]
+
+        viewHolder.icon.icon?.icon(label.getIcon())
+        viewHolder.label.text = label.getText(ctx)
+        viewHolder.setBackground(label.getColor(0xFF607D8B.toInt()))
+    }
+
+    override fun getItemCount() = labels.size
+
+    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        var icon = itemView.findViewById<IconicsImageView>(R.id.icon)!!
+        var label = itemView.findViewById<TextView>(R.id.label)!!
+
+        fun setBackground(@ColorInt color: Int) {
+            itemView.backgroundTintList = ColorStateList.valueOf(color)
+        }
+    }
+}

app/src/main/java/ch/dissem/apps/abit/adapter/SwipeableAdapters.kt

@@ -0,0 +1,312 @@
+/*
+ * Copyright 2015 Haruki Hasegawa
+ * Copyright 2016 Christian Basler
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ch.dissem.apps.abit.adapter
+
+import android.content.Context
+import android.graphics.*
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.ItemTouchHelper
+import androidx.recyclerview.widget.RecyclerView
+import ch.dissem.apps.abit.Identicon
+import ch.dissem.apps.abit.MultiIdenticon
+import ch.dissem.apps.abit.R
+import ch.dissem.apps.abit.util.Strings.prepareMessageExtract
+import ch.dissem.apps.abit.util.getDrawable
+import ch.dissem.apps.abit.util.getString
+import ch.dissem.bitmessage.entity.Conversation
+import ch.dissem.bitmessage.entity.Plaintext
+import ch.dissem.bitmessage.entity.valueobject.Label
+import java.util.*
+
+/**
+ * Adapted from the basic swipeable example by Haruki Hasegawa. See
+ *
+ * @author Christian Basler
+ * @see [https://github.com/h6ah4i/android-advancedrecyclerview](https://github.com/h6ah4i/android-advancedrecyclerview)
+ */
+abstract class SwipeableAdapter<T, H>(val ctx: Context) :
+    RecyclerView.Adapter<H>() where H : SwipeableAdapter.AbstractViewHolder {
+
+    protected val data = LinkedList<T>()
+    var eventListener: EventListener? = null
+
+    protected var label: Label? = null
+    var selectedPosition = -1
+        set(value) {
+            val oldPosition = field
+            field = value
+            notifyItemChanged(oldPosition)
+            notifyItemChanged(value)
+        }
+    var activateOnItemClick: Boolean = false
+
+    protected val labelUnknown: String = ctx.getString(R.string.unknown)
+
+    open class AbstractViewHolder(v: View, adapter: SwipeableAdapter<*, *>) : RecyclerView.ViewHolder(v) {
+
+        val container = v.findViewById<FrameLayout>(R.id.container)!!
+
+        init {
+            itemView.setOnClickListener { adapter.eventListener?.onItemSelected(adapterPosition) }
+            container.setOnClickListener { adapter.eventListener?.onItemSelected(adapterPosition) }
+        }
+    }
+
+    init {
+        // SwipeableItemAdapter requires stable ID, and also
+        // have to implement the getItemId() method appropriately.
+        setHasStableIds(true)
+    }
+
+    override fun onBindViewHolder(holder: H, position: Int) {
+        val item = data[position]
+
+        holder.apply {
+            if (activateOnItemClick) {
+                container.setBackgroundResource(
+                    if (position == selectedPosition)
+                        R.drawable.bg_item_selected_state
+                    else
+                        R.drawable.bg_item_normal_state
+                )
+            }
+
+            setData(holder, item)
+        }
+    }
+
+    abstract fun setData(holder: H, item: T)
+
+    fun add(item: T) {
+        val index = data.size
+        data.add(item)
+        notifyItemInserted(index)
+    }
+
+    fun addFirst(item: T) {
+        data.addFirst(item)
+        notifyItemInserted(0)
+    }
+
+    fun addAll(items: Collection<T>) {
+        val index = data.size
+        data.addAll(items)
+        notifyItemRangeInserted(index, items.size)
+    }
+
+    fun remove(item: T) {
+        val itemId = getItemId(item)
+        val index = data.indexOfFirst { getItemId(it) == itemId }
+        if (index >= 0) {
+            removeAt(index)
+        }
+    }
+
+    fun removeAt(index: Int) {
+        data.removeAt(index)
+        notifyItemRemoved(index)
+    }
+
+    override fun getItemId(position: Int): Long {
+        return getItemId(data[position])
+    }
+
+    abstract fun getItemId(item: T): Long
+
+    abstract fun update(item: T)
+
+    fun clear(newLabel: Label?) {
+        label = newLabel
+        data.clear()
+        notifyDataSetChanged()
+    }
+
+    fun getItem(position: Int) = data[position]
+
+    override fun getItemCount() = data.size
+
+}
+
+class SwipeableConversationAdapter(ctx: Context) : SwipeableAdapter<Conversation, SwipeableConversationAdapter.ViewHolder>(ctx) {
+    override fun getItemId(item: Conversation) = item.id.leastSignificantBits
+
+    override fun update(item: Conversation) {
+        val index = data.indexOfFirst { it.id == item.id }
+        if (index >= 0) {
+            data[index] = item
+            notifyItemChanged(index)
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val v = inflater.inflate(R.layout.conversation_row, parent, false)
+        return ViewHolder(v, this)
+    }
+
+    override fun setData(holder: ViewHolder, item: Conversation) {
+        holder.apply {
+            avatar.setImageDrawable(MultiIdenticon(item.participants))
+
+            sender.text = item.participants.sortedBy {
+                (it.alias?.let { 0 } ?: 1) + if (it.isChan) 2 else 0
+            }.map { it.alias ?: labelUnknown }.distinct().joinToString()
+            subject.text = prepareMessageExtract(item.subject)
+            extract.text = prepareMessageExtract(item.extract)
+            item.messages.count { it.labels.contains(label) }.let { size ->
+                if (size <= 1) {
+                    count.text = ""
+                } else {
+                    count.text = size.toString()
+                }
+            }
+            if (item.hasUnread()) {
+                sender.typeface = Typeface.DEFAULT_BOLD
+                subject.typeface = Typeface.DEFAULT_BOLD
+            } else {
+                sender.typeface = Typeface.DEFAULT
+                subject.typeface = Typeface.DEFAULT
+            }
+        }
+    }
+
+    class ViewHolder(v: View, adapter: SwipeableConversationAdapter) : AbstractViewHolder(v, adapter) {
+        val avatar = v.findViewById<ImageView>(R.id.avatar)!!
+        val status = v.findViewById<ImageView>(R.id.status)!!
+        val sender = v.findViewById<TextView>(R.id.sender)!!
+        val subject = v.findViewById<TextView>(R.id.subject)!!
+        val extract = v.findViewById<TextView>(R.id.text)!!
+        val count = v.findViewById<TextView>(R.id.count)!!
+    }
+}
+
+class SwipeableMessageAdapter(ctx: Context) : SwipeableAdapter<Plaintext, SwipeableMessageAdapter.ViewHolder>(ctx) {
+    override fun getItemId(item: Plaintext) = item.id as Long
+
+    override fun update(item: Plaintext) {
+        val index = data.indexOfFirst { it.id == item.id }
+        if (index >= 0) {
+            data[index] = item
+            notifyItemChanged(index)
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val v = inflater.inflate(R.layout.message_row, parent, false)
+        return ViewHolder(v, this)
+    }
+
+    override fun setData(holder: ViewHolder, item: Plaintext) {
+        holder.apply {
+            avatar.setImageDrawable(Identicon(item.from))
+            status.setImageResource(item.status.getDrawable())
+            status.contentDescription = holder.status.context.getString(item.status.getString())
+
+            sender.text = item.from.toString()
+            subject.text = prepareMessageExtract(item.subject)
+            extract.text = prepareMessageExtract(item.text)
+            if (item.isUnread()) {
+                sender.typeface = Typeface.DEFAULT_BOLD
+                subject.typeface = Typeface.DEFAULT_BOLD
+            } else {
+                sender.typeface = Typeface.DEFAULT
+                subject.typeface = Typeface.DEFAULT
+            }
+        }
+    }
+
+    class ViewHolder(v: View, adapter: SwipeableMessageAdapter) : AbstractViewHolder(v, adapter) {
+        val avatar = v.findViewById<ImageView>(R.id.avatar)!!
+        val status = v.findViewById<ImageView>(R.id.status)!!
+        val sender = v.findViewById<TextView>(R.id.sender)!!
+        val subject = v.findViewById<TextView>(R.id.subject)!!
+        val extract = v.findViewById<TextView>(R.id.text)!!
+    }
+}
+
+class SwipeToDeleteCallback(ctx: Context, swipeDirs: Int, private val eventListener: EventListener) : ItemTouchHelper.SimpleCallback(0, swipeDirs) {
+
+    private val backgroundLeft = ContextCompat.getDrawable(ctx, R.drawable.bg_swipe_item_left)!!
+    private val backgroundRight = ContextCompat.getDrawable(ctx, R.drawable.bg_swipe_item_right)!!
+    private val clearPaint = Paint().apply { xfermode = PorterDuffXfermode(PorterDuff.Mode.CLEAR) }
+
+
+    override fun getMovementFlags(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder): Int {
+        /**
+         * To disable "swipe" for specific item return 0 here.
+         * For example:
+         * if (viewHolder?.itemViewType == YourAdapter.SOME_TYPE) return 0
+         * if (viewHolder?.adapterPosition == 0) return 0
+         */
+        if (viewHolder.adapterPosition == 10) return 0
+        return super.getMovementFlags(recyclerView, viewHolder)
+    }
+
+    override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder) = false
+
+    override fun onChildDraw(
+        c: Canvas, recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder,
+        dX: Float, dY: Float, actionState: Int, isCurrentlyActive: Boolean
+    ) {
+
+        val itemView = viewHolder.itemView
+        val isCanceled = dX == 0f && !isCurrentlyActive
+
+        if (isCanceled) {
+            clearCanvas(c, itemView.right + dX, itemView.top.toFloat(), itemView.right.toFloat(), itemView.bottom.toFloat())
+            super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive)
+            return
+        }
+
+        if (dX < 0) {
+            backgroundLeft.setBounds(itemView.right + dX.toInt(), itemView.top, itemView.right, itemView.bottom)
+            backgroundLeft.draw(c)
+        } else {
+            backgroundRight.setBounds(itemView.left, itemView.top, itemView.left + dX.toInt(), itemView.bottom)
+            backgroundRight.draw(c)
+        }
+
+        super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive)
+    }
+
+    private fun clearCanvas(c: Canvas?, left: Float, top: Float, right: Float, bottom: Float) {
+        c?.drawRect(left, top, right, bottom, clearPaint)
+    }
+
+    override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
+        when (direction) {
+            ItemTouchHelper.LEFT -> eventListener.onItemDeleted(viewHolder.adapterPosition)
+            ItemTouchHelper.RIGHT -> eventListener.onItemArchived(viewHolder.adapterPosition)
+        }
+    }
+}
+
+interface EventListener {
+    fun onItemDeleted(position: Int)
+
+    fun onItemArchived(position: Int)
+
+    fun onItemSelected(position: Int)
+}

app/src/main/java/ch/dissem/apps/abit/adapter/SwipeableMessageAdapter.kt

@@ -1,250 +0,0 @@
-/*
- * Copyright 2015 Haruki Hasegawa
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.adapter
-
-import android.annotation.SuppressLint
-import android.graphics.Typeface
-import android.support.v7.widget.RecyclerView
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.widget.FrameLayout
-import android.widget.ImageView
-import android.widget.TextView
-import ch.dissem.apps.abit.Identicon
-import ch.dissem.apps.abit.R
-import ch.dissem.apps.abit.repository.AndroidLabelRepository.Companion.LABEL_ARCHIVE
-import ch.dissem.apps.abit.util.Assets
-import ch.dissem.apps.abit.util.Strings.prepareMessageExtract
-import ch.dissem.bitmessage.entity.Plaintext
-import ch.dissem.bitmessage.entity.valueobject.Label
-import com.h6ah4i.android.widget.advrecyclerview.swipeable.SwipeableItemAdapter
-import com.h6ah4i.android.widget.advrecyclerview.swipeable.SwipeableItemConstants
-import com.h6ah4i.android.widget.advrecyclerview.swipeable.SwipeableItemConstants.*
-import com.h6ah4i.android.widget.advrecyclerview.swipeable.action.SwipeResultActionMoveToSwipedDirection
-import com.h6ah4i.android.widget.advrecyclerview.swipeable.action.SwipeResultActionRemoveItem
-import com.h6ah4i.android.widget.advrecyclerview.utils.AbstractSwipeableItemViewHolder
-import com.h6ah4i.android.widget.advrecyclerview.utils.RecyclerViewAdapterUtils
-import java.util.*
-
-/**
- * Adapted from the basic swipeable example by Haruki Hasegawa. See
- *
- * @author Christian Basler
- * @see [https://github.com/h6ah4i/android-advancedrecyclerview](https://github.com/h6ah4i/android-advancedrecyclerview)
- */
-class SwipeableMessageAdapter : RecyclerView.Adapter<SwipeableMessageAdapter.ViewHolder>(), SwipeableItemAdapter<SwipeableMessageAdapter.ViewHolder>, SwipeableItemConstants {
-
-    private val data = LinkedList<Plaintext>()
-    var eventListener: EventListener? = null
-    private val itemViewOnClickListener: View.OnClickListener
-    private val swipeableViewContainerOnClickListener: View.OnClickListener
-
-    private var label: Label? = null
-    private var selectedPosition = -1
-    private var activateOnItemClick: Boolean = false
-
-    fun setActivateOnItemClick(activateOnItemClick: Boolean) {
-        this.activateOnItemClick = activateOnItemClick
-    }
-
-    interface EventListener {
-        fun onItemDeleted(item: Plaintext)
-
-        fun onItemArchived(item: Plaintext)
-
-        fun onItemViewClicked(v: View?)
-    }
-
-    class ViewHolder(v: View) : AbstractSwipeableItemViewHolder(v) {
-        val container = v.findViewById<FrameLayout>(R.id.container)!!
-        val avatar = v.findViewById<ImageView>(R.id.avatar)!!
-        val status = v.findViewById<ImageView>(R.id.status)!!
-        val sender = v.findViewById<TextView>(R.id.sender)!!
-        val subject = v.findViewById<TextView>(R.id.subject)!!
-        val extract = v.findViewById<TextView>(R.id.text)!!
-
-        override fun getSwipeableContainerView() = container
-    }
-
-    init {
-        itemViewOnClickListener = View.OnClickListener { view -> onItemViewClick(view) }
-        swipeableViewContainerOnClickListener = View.OnClickListener { view -> onSwipeableViewContainerClick(view) }
-
-        // SwipeableItemAdapter requires stable ID, and also
-        // have to implement the getItemId() method appropriately.
-        setHasStableIds(true)
-    }
-
-    fun add(item: Plaintext) {
-        data.add(item)
-        notifyDataSetChanged()
-    }
-
-    fun addFirst(item: Plaintext) {
-        val index = data.size
-        data.addFirst(item)
-        notifyItemInserted(index)
-    }
-
-    fun addAll(items: Collection<Plaintext>) {
-        val index = data.size
-        data.addAll(items)
-        notifyItemRangeInserted(index, items.size)
-    }
-
-    fun remove(item: Plaintext) {
-        val index = data.indexOf(item)
-        data.removeAll { it.id == item.id }
-        notifyItemRemoved(index)
-    }
-
-    fun update(item: Plaintext) {
-        val index = data.indexOfFirst { it.id == item.id }
-        if (index >= 0) {
-            data[index] = item
-            notifyItemChanged(index)
-        }
-    }
-
-    fun clear(newLabel: Label?) {
-        label = newLabel
-        data.clear()
-        notifyDataSetChanged()
-    }
-
-    private fun onItemViewClick(v: View) {
-        eventListener?.onItemViewClicked(v)
-    }
-
-    private fun onSwipeableViewContainerClick(v: View) {
-        eventListener?.onItemViewClicked(
-            RecyclerViewAdapterUtils.getParentViewHolderItemView(v))
-    }
-
-    fun getItem(position: Int) = data[position]
-
-    override fun getItemId(position: Int) = data[position].id as Long
-
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val inflater = LayoutInflater.from(parent.context)
-        val v = inflater.inflate(R.layout.message_row, parent, false)
-        return ViewHolder(v)
-    }
-
-    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val item = data[position]
-
-        holder.apply {
-            if (activateOnItemClick) {
-                container.setBackgroundResource(
-                    if (position == selectedPosition)
-                        R.drawable.bg_item_selected_state
-                    else
-                        R.drawable.bg_item_normal_state
-                )
-            }
-
-            // set listeners
-            // (if the item is *pinned*, click event comes to the itemView)
-            itemView.setOnClickListener(itemViewOnClickListener)
-            // (if the item is *not pinned*, click event comes to the container)
-            container.setOnClickListener(swipeableViewContainerOnClickListener)
-
-            // set data
-            avatar.setImageDrawable(Identicon(item.from))
-            status.setImageResource(Assets.getStatusDrawable(item.status))
-            status.contentDescription = holder.status.context.getString(Assets.getStatusString(item.status))
-            sender.text = item.from.toString()
-            subject.text = prepareMessageExtract(item.subject)
-            extract.text = prepareMessageExtract(item.text)
-            if (item.isUnread()) {
-                sender.typeface = Typeface.DEFAULT_BOLD
-                subject.typeface = Typeface.DEFAULT_BOLD
-            } else {
-                sender.typeface = Typeface.DEFAULT
-                subject.typeface = Typeface.DEFAULT
-            }
-        }
-    }
-
-    override fun getItemCount() = data.size
-
-    override fun onGetSwipeReactionType(holder: ViewHolder, position: Int, x: Int, y: Int): Int =
-        if (label === LABEL_ARCHIVE || label?.type == Label.Type.TRASH) {
-            REACTION_CAN_SWIPE_LEFT or REACTION_CAN_NOT_SWIPE_RIGHT_WITH_RUBBER_BAND_EFFECT
-        } else {
-            REACTION_CAN_SWIPE_BOTH_H
-        }
-
-    @SuppressLint("SwitchIntDef")
-    override fun onSetSwipeBackground(holder: ViewHolder, position: Int, type: Int) =
-        holder.itemView.setBackgroundResource(when (type) {
-            DRAWABLE_SWIPE_NEUTRAL_BACKGROUND -> R.drawable.bg_swipe_item_neutral
-            DRAWABLE_SWIPE_LEFT_BACKGROUND -> R.drawable.bg_swipe_item_left
-            DRAWABLE_SWIPE_RIGHT_BACKGROUND -> if (label === LABEL_ARCHIVE || label?.type == Label.Type.TRASH) {
-                R.drawable.bg_swipe_item_neutral
-            } else {
-                R.drawable.bg_swipe_item_right
-            }
-            else -> R.drawable.bg_swipe_item_neutral
-        })
-
-    @SuppressLint("SwitchIntDef")
-    override fun onSwipeItem(holder: ViewHolder, position: Int, result: Int) =
-        when (result) {
-            RESULT_SWIPED_RIGHT -> SwipeRightResultAction(this, position)
-            RESULT_SWIPED_LEFT -> SwipeLeftResultAction(this, position)
-            else -> null
-        }
-
-    override fun onSwipeItemStarted(holder: ViewHolder?, position: Int) = Unit
-
-    fun setSelectedPosition(selectedPosition: Int) {
-        val oldPosition = this.selectedPosition
-        this.selectedPosition = selectedPosition
-        notifyItemChanged(oldPosition)
-        notifyItemChanged(selectedPosition)
-    }
-
-    private class SwipeLeftResultAction internal constructor(adapter: SwipeableMessageAdapter, position: Int) : SwipeResultActionMoveToSwipedDirection() {
-        private var adapter: SwipeableMessageAdapter? = adapter
-        private val item = adapter.data[position]
-
-        override fun onPerformAction() {
-            adapter?.eventListener?.onItemDeleted(item)
-        }
-
-        override fun onCleanUp() {
-            adapter = null
-        }
-    }
-
-    private class SwipeRightResultAction internal constructor(adapter: SwipeableMessageAdapter, position: Int) : SwipeResultActionRemoveItem() {
-        private var adapter: SwipeableMessageAdapter? = adapter
-        private val item = adapter.data[position]
-
-        override fun onPerformAction() {
-            adapter?.eventListener?.onItemArchived(item)
-        }
-
-        override fun onCleanUp() {
-            adapter = null
-        }
-    }
-}

app/src/main/java/ch/dissem/apps/abit/adapter/SwitchingProofOfWorkEngine.kt

@@ -1,48 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.adapter
-
-import android.content.Context
-import android.preference.PreferenceManager
-import ch.dissem.bitmessage.InternalContext
-import ch.dissem.bitmessage.ports.ProofOfWorkEngine
-
-/**
- * Switches between two [ProofOfWorkEngine]s depending on the configuration.
- *
- * @author Christian Basler
- */
-class SwitchingProofOfWorkEngine(
-        private val ctx: Context,
-        private val preference: String,
-        private val option: ProofOfWorkEngine,
-        private val fallback: ProofOfWorkEngine
-) : ProofOfWorkEngine, InternalContext.ContextHolder {
-
-    override fun calculateNonce(initialHash: ByteArray, target: ByteArray, callback: ProofOfWorkEngine.Callback) {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
-        if (preferences.getBoolean(preference, false)) {
-            option.calculateNonce(initialHash, target, callback)
-        } else {
-            fallback.calculateNonce(initialHash, target, callback)
-        }
-    }
-
-    override fun setContext(context: InternalContext) = listOf(option, fallback)
-            .filterIsInstance<InternalContext.ContextHolder>()
-            .forEach { it.setContext(context) }
-}

app/src/main/java/ch/dissem/apps/abit/dialog/AddIdentityDialogFragment.kt

@@ -19,12 +19,12 @@ package ch.dissem.apps.abit.dialog
 import android.app.AlertDialog
 import android.content.Context
 import android.os.Bundle
-import android.support.v7.app.AppCompatDialogFragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.TextView
 import android.widget.Toast
+import androidx.appcompat.app.AppCompatDialogFragment
 import ch.dissem.apps.abit.ImportIdentityActivity
 import ch.dissem.apps.abit.MainActivity
 import ch.dissem.apps.abit.R
@@ -33,7 +33,7 @@ import ch.dissem.bitmessage.BitmessageContext
 import ch.dissem.bitmessage.entity.payload.Pubkey
 import kotlinx.android.synthetic.main.dialog_add_identity.*
 import org.jetbrains.anko.doAsync
-import org.jetbrains.anko.support.v4.startActivity
+import org.jetbrains.anko.startActivity
 import org.jetbrains.anko.uiThread
 
 /**
@@ -77,7 +77,7 @@ class AddIdentityDialogFragment : AppCompatDialogFragment() {
                         }
                     }
                 }
-                R.id.import_identity -> startActivity<ImportIdentityActivity>()
+                R.id.import_identity -> ctx.startActivity<ImportIdentityActivity>()
                 R.id.add_chan -> addChanDialog()
                 R.id.add_deterministic_address -> DeterministicIdentityDialogFragment().show(fragmentManager, "dialog")
                 else -> return@OnClickListener

app/src/main/java/ch/dissem/apps/abit/dialog/DeterministicIdentityDialogFragment.kt

@@ -18,7 +18,7 @@ package ch.dissem.apps.abit.dialog
 
 import android.content.Context
 import android.os.Bundle
-import android.support.v7.app.AppCompatDialogFragment
+import androidx.appcompat.app.AppCompatDialogFragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup

app/src/main/java/ch/dissem/apps/abit/dialog/FullNodeDialogActivity.kt

@@ -17,11 +17,10 @@
 package ch.dissem.apps.abit.dialog
 
 import android.app.Activity
-import android.os.Build
 import android.os.Bundle
 import ch.dissem.apps.abit.R
-import ch.dissem.apps.abit.util.NetworkUtils
-import ch.dissem.apps.abit.util.Preferences
+import ch.dissem.apps.abit.util.network
+import ch.dissem.apps.abit.util.preferences
 import kotlinx.android.synthetic.main.dialog_full_node.*
 
 /**
@@ -32,14 +31,12 @@ class FullNodeDialogActivity : Activity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.dialog_full_node)
         ok.setOnClickListener {
-            Preferences.setWifiOnly(this@FullNodeDialogActivity, false)
-            NetworkUtils.enableNode(applicationContext)
+            preferences.wifiOnly = false
+            network.scheduleNodeStart()
             finish()
         }
         dismiss.setOnClickListener {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                NetworkUtils.scheduleNodeStart(applicationContext)
-            }
+            network.scheduleNodeStart()
             finish()
         }
     }

app/src/main/java/ch/dissem/apps/abit/dialog/SelectEncodingDialogFragment.kt

@@ -19,7 +19,7 @@ package ch.dissem.apps.abit.dialog
 import android.app.Activity.RESULT_OK
 import android.content.Intent
 import android.os.Bundle
-import android.support.v7.app.AppCompatDialogFragment
+import androidx.appcompat.app.AppCompatDialogFragment
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -49,7 +49,7 @@ class SelectEncodingDialogFragment : AppCompatDialogFragment() {
         when (encoding) {
             SIMPLE -> radioGroup.check(R.id.simple)
             EXTENDED -> radioGroup.check(R.id.extended)
-            else -> LOG.warn("Unexpected encoding: " + encoding)
+            else -> LOG.warn("Unexpected encoding: $encoding")
         }
         ok.setOnClickListener(View.OnClickListener {
             encoding = when (radioGroup.checkedRadioButtonId) {

app/src/main/java/ch/dissem/apps/abit/drawer/ProfileImageListener.kt

@@ -10,7 +10,7 @@ import android.view.WindowManager
 import android.widget.ImageView
 import android.widget.RelativeLayout
 import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.util.Drawables
+import ch.dissem.apps.abit.util.qrCode
 import com.mikepenz.materialdrawer.AccountHeader
 import com.mikepenz.materialdrawer.model.interfaces.IProfile
 
@@ -23,7 +23,7 @@ class ProfileImageListener(private val ctx: Context) : AccountHeader.OnAccountHe
             dialog.requestWindowFeature(Window.FEATURE_NO_TITLE)
 
             val imageView = ImageView(ctx)
-            imageView.setImageBitmap(Drawables.qrCode(Singleton.getIdentity(ctx)))
+            imageView.setImageBitmap(Singleton.getIdentity(ctx)?.qrCode())
             imageView.setOnClickListener { dialog.dismiss() }
             dialog.addContentView(
                     imageView,

app/src/main/java/ch/dissem/apps/abit/drawer/ProfileSelectionListener.kt

@@ -2,27 +2,21 @@ package ch.dissem.apps.abit.drawer
 
 import android.content.Context
 import android.content.Intent
-import android.support.v4.app.FragmentManager
+import androidx.fragment.app.FragmentManager
 import android.view.View
 import android.widget.Toast
-
+import android.widget.Toast.LENGTH_LONG
+import ch.dissem.apps.abit.*
+import ch.dissem.apps.abit.dialog.AddIdentityDialogFragment
+import ch.dissem.apps.abit.service.Singleton
+import ch.dissem.bitmessage.entity.BitmessageAddress
 import com.mikepenz.materialdrawer.AccountHeader
 import com.mikepenz.materialdrawer.model.ProfileDrawerItem
 import com.mikepenz.materialdrawer.model.interfaces.IProfile
 
-import ch.dissem.apps.abit.AddressDetailActivity
-import ch.dissem.apps.abit.AddressDetailFragment
-import ch.dissem.apps.abit.MainActivity
-import ch.dissem.apps.abit.R
-import ch.dissem.apps.abit.dialog.AddIdentityDialogFragment
-import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.bitmessage.entity.BitmessageAddress
-
-import android.widget.Toast.LENGTH_LONG
-
 class ProfileSelectionListener(
-        private val ctx: Context,
-        private val fragmentManager: FragmentManager
+    private val ctx: Context,
+    private val fragmentManager: FragmentManager
 ) : AccountHeader.OnAccountHeaderListener {
 
     override fun onProfileChanged(view: View, profile: IProfile<*>, current: Boolean): Boolean {
@@ -42,6 +36,13 @@ class ProfileSelectionListener(
                 val tag = profile.tag
                 if (tag is BitmessageAddress) {
                     Singleton.setIdentity(tag)
+                    MainActivity.apply {
+                        updateUnread()
+                        val itemList = supportFragmentManager.findFragmentById(R.id.item_list)
+                        if (itemList is ListHolder<*>) {
+                            itemList.reloadList()
+                        }
+                    }
                 }
             }
         }

app/src/main/java/ch/dissem/apps/abit/listener/MessageListener.kt

@@ -19,8 +19,11 @@ package ch.dissem.apps.abit.listener
 import android.content.Context
 import ch.dissem.apps.abit.MainActivity
 import ch.dissem.apps.abit.notification.NewMessageNotification
+import ch.dissem.apps.abit.util.preferences
 import ch.dissem.bitmessage.BitmessageContext
 import ch.dissem.bitmessage.entity.Plaintext
+import ch.dissem.bitmessage.ports.MessageRepository
+import ch.dissem.bitmessage.utils.ConversationService
 import java.util.*
 import java.util.concurrent.Executors
 
@@ -33,14 +36,26 @@ import java.util.concurrent.Executors
  * notifications should be combined.
  *
  */
-class MessageListener(ctx: Context) : BitmessageContext.Listener {
+class MessageListener(ctx: Context) : BitmessageContext.Listener.WithContext {
+    override fun setContext(ctx: BitmessageContext) {
+        messageRepo = ctx.messages
+        conversationService = ConversationService(messageRepo)
+    }
+
     private val unacknowledged = LinkedList<Plaintext>()
     private var numberOfUnacknowledgedMessages = 0
     private val notification = NewMessageNotification(ctx)
     private val pool = Executors.newSingleThreadExecutor()
+    private lateinit var messageRepo: MessageRepository
+    private lateinit var conversationService: ConversationService
+
+    init {
+        emulateConversations = ctx.preferences.emulateConversations
+    }
 
     override fun receive(plaintext: Plaintext) {
         pool.submit {
+            updateConversation(plaintext)
             unacknowledged.addFirst(plaintext)
             numberOfUnacknowledgedMessages++
             if (unacknowledged.size > 5) {
@@ -65,4 +80,17 @@ class MessageListener(ctx: Context) : BitmessageContext.Listener {
             numberOfUnacknowledgedMessages = 0
         }
     }
+
+    private fun updateConversation(plaintext: Plaintext) {
+        if (emulateConversations && plaintext.encoding != Plaintext.Encoding.EXTENDED) {
+            conversationService.getSubject(listOf(plaintext))?.let { subject ->
+                plaintext.conversationId = UUID.nameUUIDFromBytes(subject.toByteArray())
+                messageRepo.save(plaintext)
+            }
+        }
+    }
+
+    companion object {
+        private var emulateConversations = false
+    }
 }

app/src/main/java/ch/dissem/apps/abit/listener/WifiReceiver.kt

@@ -1,36 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.listener
-
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.util.NetworkUtils
-import ch.dissem.apps.abit.util.Preferences
-import org.jetbrains.anko.connectivityManager
-
-class WifiReceiver : BroadcastReceiver() {
-    override fun onReceive(ctx: Context, intent: Intent) {
-        if ("android.net.conn.CONNECTIVITY_CHANGE" == intent.action) {
-            val bmc = Singleton.getBitmessageContext(ctx)
-            if (Preferences.isFullNodeActive(ctx) && !bmc.isRunning() && !(Preferences.isWifiOnly(ctx) && ctx.connectivityManager.isActiveNetworkMetered)) {
-                NetworkUtils.doStartBitmessageService(ctx)
-            }
-        }
-    }
-}

app/src/main/java/ch/dissem/apps/abit/notification/AbstractNotification.kt

@@ -21,8 +21,8 @@ import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.content.Context
 import android.os.Build
-import android.support.annotation.ColorRes
-import android.support.v4.content.ContextCompat
+import androidx.annotation.ColorRes
+import androidx.core.content.ContextCompat
 import ch.dissem.apps.abit.R
 import org.jetbrains.anko.notificationManager
 

app/src/main/java/ch/dissem/apps/abit/notification/BatchNotification.kt

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2016 Christian Basler
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package ch.dissem.apps.abit.notification
+
+import android.content.Context
+import androidx.core.app.NotificationCompat
+import ch.dissem.apps.abit.R
+import ch.dissem.apps.abit.service.Job
+
+/**
+ * Ongoing notification while proof of work is in progress.
+ */
+class BatchNotification(ctx: Context) : AbstractNotification(ctx) {
+
+    private val builder = NotificationCompat.Builder(ctx, ONGOING_CHANNEL_ID)
+        .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+        .setUsesChronometer(true)
+
+    init {
+        initChannel(ONGOING_CHANNEL_ID, R.color.colorAccent)
+        notification = builder.build()
+    }
+
+    override val notificationId = ONGOING_NOTIFICATION_ID
+
+    fun update(job: Job): BatchNotification {
+
+        builder.setContentTitle(ctx.getString(job.description))
+            .setSmallIcon(job.icon)
+            .setProgress(job.numberOfItems, job.numberOfProcessedItems, job.numberOfItems <= 0)
+
+        notification = builder.build()
+        show()
+        return this
+    }
+
+    companion object {
+        const val ONGOING_NOTIFICATION_ID = 4
+    }
+}

app/src/main/java/ch/dissem/apps/abit/notification/ErrorNotification.kt

@@ -17,8 +17,8 @@
 package ch.dissem.apps.abit.notification
 
 import android.content.Context
-import android.support.annotation.StringRes
-import android.support.v4.app.NotificationCompat
+import androidx.annotation.StringRes
+import androidx.core.app.NotificationCompat
 
 import ch.dissem.apps.abit.R
 

app/src/main/java/ch/dissem/apps/abit/notification/NetworkNotification.kt

@@ -21,11 +21,11 @@ import android.app.PendingIntent
 import android.app.PendingIntent.FLAG_UPDATE_CURRENT
 import android.content.Context
 import android.content.Intent
-import android.support.v4.app.NotificationCompat
+import androidx.core.app.NotificationCompat
 import ch.dissem.apps.abit.MainActivity
 import ch.dissem.apps.abit.R
 import ch.dissem.apps.abit.service.BitmessageIntentService
-import ch.dissem.apps.abit.service.BitmessageService
+import ch.dissem.apps.abit.service.NodeStartupService
 import java.util.*
 import kotlin.concurrent.fixedRateTimer
 
@@ -42,7 +42,7 @@ class NetworkNotification(ctx: Context) : AbstractNotification(ctx) {
         val showAppIntent = Intent(ctx, MainActivity::class.java)
         val pendingIntent = PendingIntent.getActivity(ctx, 1, showAppIntent, 0)
         builder
-            .setSmallIcon(R.drawable.ic_notification_full_node)
+            .setSmallIcon(R.drawable.ic_notification_full_node_connecting)
             .setContentTitle(ctx.getString(R.string.bitmessage_full_node))
             .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
             .setShowWhen(false)
@@ -51,14 +51,17 @@ class NetworkNotification(ctx: Context) : AbstractNotification(ctx) {
 
     @SuppressLint("StringFormatMatches")
     private fun update(): Boolean {
-        val running = BitmessageService.isRunning
+        val running = NodeStartupService.isRunning
         builder.setOngoing(running)
-        val connections = BitmessageService.status.getProperty("network", "connections")
+        val connections = NodeStartupService.status.getProperty("network", "connections")
         if (!running) {
+            builder.setSmallIcon(R.drawable.ic_notification_full_node_disconnected)
             builder.setContentText(ctx.getString(R.string.connection_info_disconnected))
         } else if (connections == null || connections.properties.isEmpty()) {
+            builder.setSmallIcon(R.drawable.ic_notification_full_node_connecting)
             builder.setContentText(ctx.getString(R.string.connection_info_pending))
         } else {
+            builder.setSmallIcon(R.drawable.ic_notification_full_node)
             val info = StringBuilder()
             for (stream in connections.properties) {
                 val streamNumber = Integer.parseInt(stream.name.substring("stream ".length))
@@ -109,7 +112,6 @@ class NetworkNotification(ctx: Context) : AbstractNotification(ctx) {
         timer = fixedRateTimer(initialDelay = 10000, period = 10000) {
             if (!update()) {
                 cancel()
-                ctx.stopService(Intent(ctx, BitmessageService::class.java))
             }
             super@NetworkNotification.show()
         }

app/src/main/java/ch/dissem/apps/abit/notification/NewMessageNotification.kt

@@ -17,28 +17,26 @@
 package ch.dissem.apps.abit.notification
 
 import android.app.PendingIntent
+import android.app.PendingIntent.FLAG_UPDATE_CURRENT
 import android.content.Context
 import android.content.Intent
 import android.graphics.Typeface
-import android.support.v4.app.NotificationCompat
-import android.support.v4.app.NotificationCompat.BigTextStyle
-import android.support.v4.app.NotificationCompat.InboxStyle
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationCompat.BigTextStyle
+import androidx.core.app.NotificationCompat.InboxStyle
 import android.text.Spannable
 import android.text.SpannableString
 import android.text.Spanned
 import android.text.style.StyleSpan
-
 import ch.dissem.apps.abit.Identicon
 import ch.dissem.apps.abit.MainActivity
-import ch.dissem.apps.abit.R
-import ch.dissem.apps.abit.service.BitmessageIntentService
-import ch.dissem.bitmessage.entity.Plaintext
-
-import android.app.PendingIntent.FLAG_UPDATE_CURRENT
 import ch.dissem.apps.abit.MainActivity.Companion.EXTRA_REPLY_TO_MESSAGE
 import ch.dissem.apps.abit.MainActivity.Companion.EXTRA_SHOW_MESSAGE
+import ch.dissem.apps.abit.R
+import ch.dissem.apps.abit.service.BitmessageIntentService
 import ch.dissem.apps.abit.service.BitmessageIntentService.Companion.EXTRA_DELETE_MESSAGE
-import ch.dissem.apps.abit.util.Drawables.toBitmap
+import ch.dissem.apps.abit.util.toBitmap
+import ch.dissem.bitmessage.entity.Plaintext
 
 class NewMessageNotification(ctx: Context) : AbstractNotification(ctx) {
 
@@ -53,7 +51,7 @@ class NewMessageNotification(ctx: Context) : AbstractNotification(ctx) {
             bigText.setSpan(SPAN_EMPHASIS, 0, subject.length, Spanned.SPAN_INCLUSIVE_EXCLUSIVE)
         }
         builder.setSmallIcon(R.drawable.ic_notification_new_message)
-            .setLargeIcon(toBitmap(Identicon(plaintext.from), 192))
+            .setLargeIcon(Identicon(plaintext.from).toBitmap(192))
             .setContentTitle(plaintext.from.toString())
             .setContentText(plaintext.subject)
             .setStyle(BigTextStyle().bigText(bigText))

app/src/main/java/ch/dissem/apps/abit/notification/ProofOfWorkNotification.kt

@@ -19,7 +19,7 @@ package ch.dissem.apps.abit.notification
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
-import android.support.v4.app.NotificationCompat
+import androidx.core.app.NotificationCompat
 
 import ch.dissem.apps.abit.MainActivity
 import ch.dissem.apps.abit.R

app/src/main/java/ch/dissem/apps/abit/pow/ServerPowEngine.kt

@@ -1,83 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.pow
-
-import android.content.Context
-import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.synchronization.SyncAdapter
-import ch.dissem.apps.abit.util.Preferences
-import ch.dissem.bitmessage.InternalContext
-import ch.dissem.bitmessage.extensions.CryptoCustomMessage
-import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest
-import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest.Request.CALCULATE
-import ch.dissem.bitmessage.ports.ProofOfWorkEngine
-import ch.dissem.bitmessage.utils.Singleton.cryptography
-import org.slf4j.LoggerFactory
-import java.util.concurrent.ExecutorService
-import java.util.concurrent.Executors
-
-/**
- * @author Christian Basler
- */
-class ServerPowEngine(private val ctx: Context) : ProofOfWorkEngine, InternalContext.ContextHolder {
-    private lateinit var context: InternalContext
-
-    private val pool: ExecutorService
-
-    init {
-        pool = Executors.newCachedThreadPool { r ->
-            val thread = Executors.defaultThreadFactory().newThread(r)
-            thread.priority = Thread.MIN_PRIORITY
-            thread
-        }
-    }
-
-    override fun calculateNonce(initialHash: ByteArray, target: ByteArray, callback: ProofOfWorkEngine.Callback) =
-        pool.execute {
-            val identity = Singleton.getIdentity(ctx) ?: throw RuntimeException("No Identity for calculating POW")
-
-            val request = ProofOfWorkRequest(identity, initialHash,
-                    CALCULATE, target)
-            SyncAdapter.startPowSync(ctx)
-            try {
-                val cryptoMsg = CryptoCustomMessage(request)
-                cryptoMsg.signAndEncrypt(
-                        identity,
-                        cryptography().createPublicKey(identity.publicDecryptionKey)
-                )
-                val node = Preferences.getTrustedNode(ctx)
-                if (node == null) {
-                    LOG.error("trusted node is not defined")
-                } else {
-                    context.networkHandler.send(
-                            node,
-                            Preferences.getTrustedNodePort(ctx),
-                            cryptoMsg)
-                }
-            } catch (e: Exception) {
-                LOG.error(e.message, e)
-            }
-        }
-
-    override fun setContext(context: InternalContext) {
-        this.context = context
-    }
-
-    companion object {
-        private val LOG = LoggerFactory.getLogger(ServerPowEngine::class.java)
-    }
-}

app/src/main/java/ch/dissem/apps/abit/repository/AndroidLabelRepository.kt

@@ -20,7 +20,7 @@ import android.content.ContentValues
 import android.content.Context
 import android.database.Cursor
 import android.database.DatabaseUtils
-import ch.dissem.apps.abit.util.Labels
+import ch.dissem.apps.abit.util.getText
 import ch.dissem.bitmessage.entity.valueobject.Label
 import ch.dissem.bitmessage.ports.AbstractLabelRepository
 import ch.dissem.bitmessage.ports.MessageRepository
@@ -30,7 +30,8 @@ import java.util.*
 /**
  * [MessageRepository] implementation using the Android SQL API.
  */
-class AndroidLabelRepository(private val sql: SqlHelper, private val context: Context) : AbstractLabelRepository() {
+class AndroidLabelRepository(private val sql: SqlHelper, private val context: Context) :
+    AbstractLabelRepository() {
 
     override fun find(where: String): List<Label> {
         val result = LinkedList<Label>()
@@ -62,7 +63,12 @@ class AndroidLabelRepository(private val sql: SqlHelper, private val context: Co
             db.update(TABLE_NAME, values, "id=?", arrayOf(label.id.toString()))
         } else {
             db.transaction {
-                val exists = DatabaseUtils.queryNumEntries(db, TABLE_NAME, "label=?", arrayOf(label.toString())) > 0
+                val exists = DatabaseUtils.queryNumEntries(
+                    db,
+                    TABLE_NAME,
+                    "label=?",
+                    arrayOf(label.toString())
+                ) > 0
 
                 if (exists) {
                     val values = ContentValues()
@@ -82,7 +88,8 @@ class AndroidLabelRepository(private val sql: SqlHelper, private val context: Co
         }
     }
 
-    internal fun findLabels(msgId: Any) = find("id IN (SELECT label_id FROM Message_Label WHERE message_id=$msgId)")
+    internal fun findLabels(msgId: Any) =
+        find("id IN (SELECT label_id FROM Message_Label WHERE message_id=$msgId)")
 
     companion object {
         val LABEL_ARCHIVE = Label("archive", null, 0).apply { id = Long.MAX_VALUE }
@@ -97,11 +104,12 @@ class AndroidLabelRepository(private val sql: SqlHelper, private val context: Co
         internal fun getLabel(c: Cursor, context: Context): Label {
             val typeName = c.getString(c.getColumnIndex(COLUMN_TYPE))
             val type = if (typeName == null) null else Label.Type.valueOf(typeName)
-            val text: String? = Labels.getText(type, null, context)
+            val text: String? = type?.getText(null, context)
             val label = Label(
                 text ?: c.getString(c.getColumnIndex(COLUMN_LABEL)),
                 type,
-                c.getInt(c.getColumnIndex(COLUMN_COLOR)))
+                c.getInt(c.getColumnIndex(COLUMN_COLOR))
+            )
             label.id = c.getLong(c.getColumnIndex(COLUMN_ID))
             return label
         }

app/src/main/java/ch/dissem/apps/abit/repository/AndroidMessageRepository.kt

@@ -21,6 +21,7 @@ import android.database.Cursor
 import android.database.DatabaseUtils
 import android.database.sqlite.SQLiteDatabase
 import ch.dissem.apps.abit.repository.AndroidLabelRepository.Companion.LABEL_ARCHIVE
+import ch.dissem.apps.abit.util.Preferences
 import ch.dissem.apps.abit.util.UuidUtils
 import ch.dissem.apps.abit.util.UuidUtils.asUuid
 import ch.dissem.bitmessage.entity.BitmessageAddress
@@ -38,44 +39,89 @@ import java.util.*
 /**
  * [MessageRepository] implementation using the Android SQL API.
  */
-class AndroidMessageRepository(private val sql: SqlHelper) : AbstractMessageRepository() {
+class AndroidMessageRepository(private val sql: SqlHelper, private val prefs: Preferences) : AbstractMessageRepository() {
 
-    override fun findMessages(label: Label?, offset: Int, limit: Int) = if (label === LABEL_ARCHIVE) {
-        super.findMessages(null as Label?, offset, limit)
-    } else {
-        super.findMessages(label, offset, limit)
+    fun findMessages(label: Label?, offset: Int, limit: Int, separateIdentities: Boolean) =
+        if (label === LABEL_ARCHIVE || label === null) {
+            find("id NOT IN (SELECT message_id FROM Message_Label)", offset, limit, separateIdentities)
+        } else {
+            find("id IN (SELECT message_id FROM Message_Label WHERE label_id=" + label.id + ")", offset, limit, separateIdentities)
+        }
+
+    override fun findMessages(label: Label?, offset: Int, limit: Int) =
+        if (label === LABEL_ARCHIVE) {
+            super.findMessages(null as Label?, offset, limit)
+        } else {
+            super.findMessages(label, offset, limit)
+        }
+
+    fun count() = DatabaseUtils.queryNumEntries(
+        sql.readableDatabase,
+        TABLE_NAME,
+        null,
+        null
+    ).toInt()
+
+    private fun getSelectIdentity(separateIdentities: Boolean): Pair<String, Array<String>> {
+        if (separateIdentities) {
+            val identity = prefs.currentIdentity
+            return if (prefs.separateIdentities && identity != null) {
+                "AND (type = 'BROADCAST' OR recipient=? OR sender=?)" to arrayOf(identity.address, identity.address)
+            } else {
+                "" to emptyArray()
+            }
+        } else {
+            return "" to emptyArray()
+        }
     }
 
-    override fun countUnread(label: Label?) = when {
-        label === LABEL_ARCHIVE -> 0
-        label == null -> DatabaseUtils.queryNumEntries(
-            sql.readableDatabase,
-            TABLE_NAME,
-            "id IN (SELECT message_id FROM Message_Label WHERE label_id IN (SELECT id FROM Label WHERE type=?))",
-            arrayOf(Label.Type.UNREAD.name)
-        ).toInt()
-        else -> DatabaseUtils.queryNumEntries(
-            sql.readableDatabase,
-            TABLE_NAME,
-            "        id IN (SELECT message_id FROM Message_Label WHERE label_id=?) " +
-                "AND id IN (SELECT message_id FROM Message_Label WHERE label_id IN (SELECT id FROM Label WHERE type=?))",
-            arrayOf(label.id.toString(), Label.Type.UNREAD.name)
-        ).toInt()
+    override fun countUnread(label: Label?) = countUnread(label, false)
+
+    fun countUnread(label: Label?, separateIdentities: Boolean) = getSelectIdentity(separateIdentities).let { (selectIdentityQuery, selectIdentityArgs) ->
+        when {
+            label === LABEL_ARCHIVE -> 0
+            label == null -> DatabaseUtils.queryNumEntries(
+                sql.readableDatabase,
+                TABLE_NAME,
+                "id IN (SELECT message_id FROM Message_Label WHERE label_id IN (SELECT id FROM Label WHERE type=?)) " +
+                    selectIdentityQuery,
+                arrayOf(Label.Type.UNREAD.name, *selectIdentityArgs)
+            ).toInt()
+            else -> DatabaseUtils.queryNumEntries(
+                sql.readableDatabase,
+                TABLE_NAME,
+                "id IN (SELECT message_id FROM Message_Label WHERE label_id=?) " +
+                    "AND id IN (SELECT message_id FROM Message_Label WHERE label_id IN (SELECT id FROM Label WHERE type=?)) " +
+                    selectIdentityQuery,
+                arrayOf(label.id.toString(), Label.Type.UNREAD.name, *selectIdentityArgs)
+            ).toInt()
+        }
     }
 
-    override fun findConversations(label: Label?): List<UUID> {
+    override fun findConversations(label: Label?, offset: Int, limit: Int): List<UUID> = findConversations(label, offset, limit, false)
+
+    fun findConversations(label: Label?, offset: Int, limit: Int, separateIdentities: Boolean): List<UUID> {
         val projection = arrayOf(COLUMN_CONVERSATION)
+        val (selectIdentityQuery, selectIdentityArgs) = getSelectIdentity(separateIdentities)
 
         val where = when {
-            label === LABEL_ARCHIVE -> "id NOT IN (SELECT message_id FROM Message_Label)"
-            label == null -> null
-            else -> "id IN (SELECT message_id FROM Message_Label WHERE label_id=${label.id})"
+            label === LABEL_ARCHIVE -> "id NOT IN (SELECT message_id FROM Message_Label) $selectIdentityQuery"
+            label == null -> if (selectIdentityQuery.isNotBlank()) {
+                "type = 'BROADCAST' OR recipient=? OR sender=?"
+            } else {
+                null
+            }
+            else -> "id IN (SELECT message_id FROM Message_Label WHERE label_id=${label.id}) $selectIdentityQuery"
         }
         val result = LinkedList<UUID>()
         sql.readableDatabase.query(
             true,
-            TABLE_NAME, projection, where,
-            null, null, null, null, null
+            TABLE_NAME,
+            projection,
+            where,
+            selectIdentityArgs, null, null,
+            "$COLUMN_RECEIVED DESC, $COLUMN_SENT DESC",
+            if (limit == 0) null else "$offset, $limit"
         ).use { c ->
             while (c.moveToNext()) {
                 val uuidBytes = c.getBlob(c.getColumnIndex(COLUMN_CONVERSATION))
@@ -128,16 +174,34 @@ class AndroidMessageRepository(private val sql: SqlHelper) : AbstractMessageRepo
         db.update(PARENTS_TABLE_NAME, values, where, null)
     }
 
-    override fun find(where: String, offset: Int, limit: Int): List<Plaintext> {
+    override fun find(where: String, offset: Int, limit: Int) = find(where, offset, limit, false)
+
+    private fun find(where: String, offset: Int, limit: Int, separateIdentities: Boolean): List<Plaintext> {
         val result = LinkedList<Plaintext>()
+        val (selectIdentityQuery, selectIdentityArgs) = getSelectIdentity(separateIdentities)
 
         // Define a projection that specifies which columns from the database
         // you will actually use after this query.
-        val projection = arrayOf(COLUMN_ID, COLUMN_IV, COLUMN_TYPE, COLUMN_SENDER, COLUMN_RECIPIENT, COLUMN_DATA, COLUMN_ACK_DATA, COLUMN_SENT, COLUMN_RECEIVED, COLUMN_STATUS, COLUMN_TTL, COLUMN_RETRIES, COLUMN_NEXT_TRY, COLUMN_CONVERSATION)
+        val projection = arrayOf(
+            COLUMN_ID,
+            COLUMN_IV,
+            COLUMN_TYPE,
+            COLUMN_SENDER,
+            COLUMN_RECIPIENT,
+            COLUMN_DATA,
+            COLUMN_ACK_DATA,
+            COLUMN_SENT,
+            COLUMN_RECEIVED,
+            COLUMN_STATUS,
+            COLUMN_TTL,
+            COLUMN_RETRIES,
+            COLUMN_NEXT_TRY,
+            COLUMN_CONVERSATION
+        )
 
         sql.readableDatabase.query(
             TABLE_NAME, projection,
-            where, null, null, null,
+            "$where $selectIdentityQuery", selectIdentityArgs, null, null,
             "$COLUMN_RECEIVED DESC, $COLUMN_SENT DESC",
             if (limit == 0) null else "$offset, $limit"
         ).use { c ->
@@ -174,7 +238,8 @@ class AndroidMessageRepository(private val sql: SqlHelper) : AbstractMessageRepo
         labels = findLabels(id!!)
     }
 
-    private fun findLabels(msgId: Any) = (ctx.labelRepository as AndroidLabelRepository).findLabels(msgId)
+    private fun findLabels(msgId: Any) =
+        (ctx.labelRepository as AndroidLabelRepository).findLabels(msgId)
 
     override fun save(message: Plaintext) {
         saveContactIfNecessary(message.from)
@@ -233,6 +298,39 @@ class AndroidMessageRepository(private val sql: SqlHelper) : AbstractMessageRepo
         sql.writableDatabase.delete(TABLE_NAME, "id = ?", arrayOf(message.id.toString()))
     }
 
+    fun findNextLegacyMessages(previous: Plaintext?, limit: Int = 10): List<Plaintext> {
+        val result = mutableListOf<Plaintext>()
+
+        val projection = arrayOf(
+            COLUMN_ID,
+            COLUMN_IV,
+            COLUMN_TYPE,
+            COLUMN_SENDER,
+            COLUMN_RECIPIENT,
+            COLUMN_DATA,
+            COLUMN_ACK_DATA,
+            COLUMN_SENT,
+            COLUMN_RECEIVED,
+            COLUMN_STATUS,
+            COLUMN_TTL,
+            COLUMN_RETRIES,
+            COLUMN_NEXT_TRY,
+            COLUMN_CONVERSATION
+        )
+
+        sql.readableDatabase.query(
+            TABLE_NAME, projection,
+            "$COLUMN_ID > ${previous?.id ?: Long.MIN_VALUE}", null, null, null,
+            "$COLUMN_ID ASC",
+            "$limit"
+        ).use { c ->
+            while (c.moveToNext()) {
+                result.add(getMessage(c))
+            }
+        }
+        return result
+    }
+
     companion object {
         private const val TABLE_NAME = "Message"
         private const val COLUMN_ID = "id"
@@ -257,4 +355,5 @@ class AndroidMessageRepository(private val sql: SqlHelper) : AbstractMessageRepo
         private const val JT_COLUMN_MESSAGE = "message_id"
         private const val JT_COLUMN_LABEL = "label_id"
     }
+
 }

app/src/main/java/ch/dissem/apps/abit/service/BatchProcessorService.kt

@@ -0,0 +1,117 @@
+package ch.dissem.apps.abit.service
+
+import android.app.Service
+import android.content.Intent
+import android.os.Binder
+import androidx.annotation.DrawableRes
+import androidx.annotation.StringRes
+import androidx.core.content.ContextCompat
+import ch.dissem.apps.abit.notification.BatchNotification
+import ch.dissem.apps.abit.notification.BatchNotification.Companion.ONGOING_NOTIFICATION_ID
+import org.jetbrains.anko.doAsync
+import java.util.*
+
+class BatchProcessorService : Service() {
+    private lateinit var notification: BatchNotification
+
+    override fun onCreate() {
+        notification = BatchNotification(this)
+    }
+
+    override fun onBind(intent: Intent) = BatchBinder(this)
+
+    class BatchBinder internal constructor(val service: BatchProcessorService) : Binder() {
+        private val notification = service.notification
+
+        fun process(job: Job) = synchronized(queue) {
+            ContextCompat.startForegroundService(
+                service,
+                Intent(service, BatchProcessorService::class.java)
+            )
+            service.startForeground(
+                ONGOING_NOTIFICATION_ID,
+                notification.notification
+            )
+            if (!working) {
+                working = true
+                service.processQueue(job)
+            } else {
+                queue.add(job)
+            }
+        }
+
+    }
+
+    private fun processQueue(job: Job) {
+        doAsync {
+            var next: Job? = job
+            while (next != null) {
+                next.process(notification)
+
+                synchronized(queue) {
+                    next = queue.poll()
+                    if (next == null) {
+                        working = false
+                        stopForeground(true)
+                        stopSelf()
+                    }
+                }
+            }
+
+        }
+    }
+
+    companion object {
+        private var working = false
+        private val queue = LinkedList<Job>()
+    }
+}
+
+interface Job {
+    val icon: Int
+        @DrawableRes get
+
+    val description: Int
+        @StringRes get
+
+    val numberOfItems: Int
+    var numberOfProcessedItems: Int
+
+    /**
+     * Runs the job. This shouldn't happen in a separate thread, as this is handled by the service.
+     */
+    fun process(notification: BatchNotification)
+}
+
+data class SimpleJob<T>(
+    override val numberOfItems: Int,
+    /**
+     * Provides the next batch of items, given the last item of the previous batch,
+     * or null for the first batch.
+     */
+    private val provider: (T?) -> List<T>,
+    /**
+     * Processes an item.
+     */
+    private val processor: (T) -> Unit,
+    override val icon: Int,
+    override val description: Int
+) : Job {
+    override var numberOfProcessedItems: Int = 0
+
+    override fun process(notification: BatchNotification) {
+        notification.update(this)
+        var batch = provider.invoke(null)
+        while (batch.isNotEmpty()) {
+            Thread.yield()
+            batch.forEach {
+                processor.invoke(it)
+                Thread.yield()
+            }
+            numberOfProcessedItems += batch.size
+            notification.update(this)
+            batch = provider.invoke(batch.last())
+        }
+    }
+
+}

app/src/main/java/ch/dissem/apps/abit/service/BitmessageIntentService.kt

@@ -18,7 +18,7 @@ package ch.dissem.apps.abit.service
 
 import android.app.IntentService
 import android.content.Intent
-import ch.dissem.apps.abit.util.NetworkUtils
+import ch.dissem.apps.abit.util.network
 import ch.dissem.bitmessage.BitmessageContext
 import ch.dissem.bitmessage.entity.Plaintext
 
@@ -44,10 +44,10 @@ class BitmessageIntentService : IntentService("BitmessageIntentService") {
                 Singleton.getMessageListener(this).resetNotification()
             }
             if (it.hasExtra(EXTRA_STARTUP_NODE)) {
-                NetworkUtils.enableNode(this)
+                network.enableNode()
             }
             if (it.hasExtra(EXTRA_SHUTDOWN_NODE)) {
-                NetworkUtils.disableNode(this)
+                network.disableNode()
             }
         }
     }

app/src/main/java/ch/dissem/apps/abit/service/BitmessageService.kt

@@ -1,107 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.service
-
-import android.app.Service
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import android.content.IntentFilter
-import android.net.ConnectivityManager
-import android.os.Handler
-import ch.dissem.apps.abit.notification.NetworkNotification
-import ch.dissem.apps.abit.notification.NetworkNotification.Companion.NETWORK_NOTIFICATION_ID
-import ch.dissem.apps.abit.util.Preferences
-import ch.dissem.bitmessage.BitmessageContext
-import ch.dissem.bitmessage.utils.Property
-
-/**
- * Define a Service that returns an IBinder for the
- * sync adapter class, allowing the sync adapter framework to call
- * onPerformSync().
- */
-class BitmessageService : Service() {
-
-    private val bmc: BitmessageContext by lazy { Singleton.getBitmessageContext(this) }
-    private lateinit var notification: NetworkNotification
-
-    private val connectivityReceiver: BroadcastReceiver = object : BroadcastReceiver() {
-        override fun onReceive(context: Context, intent: Intent?) {
-            if (bmc.isRunning() && !Preferences.isConnectionAllowed(this@BitmessageService)) {
-                bmc.shutdown()
-            }
-        }
-    }
-
-    private val cleanupHandler = Handler()
-    private val cleanupTask: Runnable = object : Runnable {
-        override fun run() {
-            bmc.cleanup()
-            if (isRunning) {
-                cleanupHandler.postDelayed(this, 24 * 60 * 60 * 1000L) // once a day
-            }
-        }
-    }
-
-    override fun onCreate() {
-        registerReceiver(
-            connectivityReceiver,
-            IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION)
-        )
-        notification = NetworkNotification(this)
-        running = false
-    }
-
-    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-        if (!isRunning) {
-            running = true
-            notification.connecting()
-            startForeground(NETWORK_NOTIFICATION_ID, notification.notification)
-            if (!bmc.isRunning()) {
-                bmc.startup()
-            }
-            notification.show()
-            cleanupHandler.postDelayed(cleanupTask, 24 * 60 * 60 * 1000L)
-        }
-        return Service.START_STICKY
-    }
-
-    override fun onDestroy() {
-        if (bmc.isRunning()) {
-            bmc.shutdown()
-        }
-        running = false
-        notification.showShutdown()
-        cleanupHandler.removeCallbacks(cleanupTask)
-        bmc.cleanup()
-        unregisterReceiver(connectivityReceiver)
-        stopSelf()
-    }
-
-    override fun onBind(intent: Intent) = null
-
-    companion object {
-        @Volatile
-        private var running = false
-
-        val isRunning: Boolean
-            get() = running && Singleton.bitmessageContext?.isRunning() == true
-
-        val status: Property
-            get() = Singleton.bitmessageContext?.status() ?: Property("bitmessage context")
-    }
-}

app/src/main/java/ch/dissem/apps/abit/service/CleanupService.kt

@@ -0,0 +1,18 @@
+package ch.dissem.apps.abit.service
+
+import android.app.job.JobParameters
+import android.app.job.JobService
+import org.jetbrains.anko.doAsync
+
+class CleanupService : JobService() {
+
+    override fun onStartJob(params: JobParameters?): Boolean {
+        doAsync {
+            Singleton.getBitmessageContext(this@CleanupService).cleanup()
+            jobFinished(params, false)
+        }
+        return true
+    }
+
+    override fun onStopJob(params: JobParameters?) = false
+}

app/src/main/java/ch/dissem/apps/abit/service/NodeStartupService.kt

@@ -0,0 +1,103 @@
+package ch.dissem.apps.abit.service
+
+import android.app.job.JobParameters
+import android.app.job.JobService
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.net.ConnectivityManager
+import ch.dissem.apps.abit.notification.NetworkNotification
+import ch.dissem.apps.abit.util.network
+import ch.dissem.apps.abit.util.preferences
+import ch.dissem.bitmessage.BitmessageContext
+import ch.dissem.bitmessage.utils.Property
+import org.jetbrains.anko.doAsync
+
+/**
+ * Starts the full node if
+ * * it is active
+ * * it is not already running
+ *
+ * And stops it when the preconditions for the job (unmetered network) aren't met anymore.
+ */
+class NodeStartupService : JobService() {
+    private val bmc: BitmessageContext by lazy { Singleton.getBitmessageContext(this) }
+
+    private lateinit var notification: NetworkNotification
+
+    private val connectivityReceiver: BroadcastReceiver = object : BroadcastReceiver() {
+        override fun onReceive(context: Context, intent: Intent?) {
+            if (bmc.isRunning() && !preferences.connectionAllowed) {
+                bmc.shutdown()
+            }
+        }
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+        notification = NetworkNotification(this)
+    }
+
+    override fun onStartJob(params: JobParameters?): Boolean {
+        if (preferences.online) {
+            registerReceiver(
+                connectivityReceiver,
+                IntentFilter().apply {
+                    addAction(ConnectivityManager.CONNECTIVITY_ACTION)
+                    addAction(Intent.ACTION_BATTERY_CHANGED)
+                }
+            )
+            startForeground(0, notification.notification)
+            NodeStartupService.running = false
+
+            if (!isRunning) {
+                running = true
+                notification.connecting()
+                if (!bmc.isRunning()) {
+                    bmc.startup()
+                }
+                notification.show()
+            }
+        }
+        return true
+    }
+
+    override fun onDestroy() {
+        if (bmc.isRunning()) {
+            bmc.shutdown()
+        }
+        running = false
+        notification.showShutdown()
+        doAsync {
+            bmc.cleanup()
+        }
+        try {
+            unregisterReceiver(connectivityReceiver)
+        } catch (_: IllegalArgumentException) {
+            // For some reason, onStartJob wasn't called so the receiver isn't registered.
+            // Let's just ignore this.
+        }
+        stopSelf()
+    }
+
+    /**
+     * Don't actually stop the service, otherwise it will be stopped after 1 or 10 minutes
+     * depending on Android version.
+     */
+    override fun onStopJob(params: JobParameters?): Boolean {
+        network.scheduleNodeStart()
+        return false
+    }
+
+    companion object {
+        @Volatile
+        private var running = false
+
+        val isRunning: Boolean
+            get() = running && Singleton.bitmessageContext?.isRunning() == true
+
+        val status: Property
+            get() = Singleton.bitmessageContext?.status() ?: Property("bitmessage context")
+    }
+}

app/src/main/java/ch/dissem/apps/abit/service/ProofOfWorkService.kt

@@ -19,7 +19,7 @@ package ch.dissem.apps.abit.service
 import android.app.Service
 import android.content.Intent
 import android.os.Binder
-import android.support.v4.content.ContextCompat
+import androidx.core.content.ContextCompat
 import ch.dissem.apps.abit.notification.ProofOfWorkNotification
 import ch.dissem.apps.abit.notification.ProofOfWorkNotification.Companion.ONGOING_NOTIFICATION_ID
 import ch.dissem.apps.abit.util.PowStats

app/src/main/java/ch/dissem/apps/abit/service/Singleton.kt

@@ -20,15 +20,12 @@ import android.content.Context
 import android.widget.Toast
 import ch.dissem.apps.abit.MainActivity
 import ch.dissem.apps.abit.R
-import ch.dissem.apps.abit.adapter.AndroidCryptography
 import ch.dissem.apps.abit.adapter.SwipeableMessageAdapter
-import ch.dissem.apps.abit.adapter.SwitchingProofOfWorkEngine
 import ch.dissem.apps.abit.listener.MessageListener
-import ch.dissem.apps.abit.pow.ServerPowEngine
 import ch.dissem.apps.abit.repository.*
-import ch.dissem.apps.abit.util.Constants
-import ch.dissem.apps.abit.util.Observable
+import ch.dissem.apps.abit.util.preferences
 import ch.dissem.bitmessage.BitmessageContext
+import ch.dissem.bitmessage.cryptography.sc.SpongyCryptography
 import ch.dissem.bitmessage.entity.BitmessageAddress
 import ch.dissem.bitmessage.entity.payload.Pubkey
 import ch.dissem.bitmessage.entity.valueobject.Label
@@ -37,6 +34,7 @@ import ch.dissem.bitmessage.ports.DefaultLabeler
 import ch.dissem.bitmessage.utils.ConversationService
 import ch.dissem.bitmessage.utils.TTL
 import ch.dissem.bitmessage.utils.UnixTime.DAY
+import io.reactivex.subjects.BehaviorSubject
 import org.jetbrains.anko.doAsync
 import org.jetbrains.anko.uiThread
 import java.lang.ref.WeakReference
@@ -45,7 +43,7 @@ import java.lang.ref.WeakReference
  * Provides singleton objects across the application.
  */
 object Singleton {
-    var currentLabel = Observable<Label?>(null)
+    var currentLabel = BehaviorSubject.create<Label>()
 
     private var swipeableMessageAdapter: WeakReference<SwipeableMessageAdapter>? = null
     val labeler = DefaultLabeler().apply {
@@ -53,7 +51,7 @@ object Singleton {
             MainActivity.apply {
                 runOnUiThread {
                     swipeableMessageAdapter?.get()?.let { swipeableMessageAdapter ->
-                        currentLabel.value?.let { label ->
+                        currentLabel.value?.let {label ->
                             when {
                                 label.type == Label.Type.TRASH
                                     && added.all { it.type == Label.Type.TRASH }
@@ -66,6 +64,10 @@ object Singleton {
                                     // work-around for messages that are deleted from unread, which already have the unread label removed
                                     swipeableMessageAdapter.remove(message)
                                 }
+                                label == AndroidLabelRepository.LABEL_ARCHIVE && !added.isEmpty() -> {
+                                    // work-around for messages in archive, which isn't an actual label but an absence of labels
+                                    swipeableMessageAdapter.remove(message)
+                                }
                                 added.contains(label) -> {
                                     // in most cases, top should be the correct position, but time will show if
                                     // the message should be properly sorted in
@@ -101,22 +103,19 @@ object Singleton {
                 TTL.pubkey = 2 * DAY
                 val ctx = context.applicationContext
                 val sqlHelper = SqlHelper(ctx)
-                proofOfWorkEngine = SwitchingProofOfWorkEngine(
-                    ctx, Constants.PREFERENCE_SERVER_POW,
-                    ServerPowEngine(ctx),
-                    ServicePowEngine(ctx)
-                )
-                cryptography = AndroidCryptography()
+                proofOfWorkEngine = ServicePowEngine(ctx)
+                cryptography = SpongyCryptography()
                 nodeRegistry = AndroidNodeRegistry(sqlHelper)
                 inventory = AndroidInventory(sqlHelper)
                 addressRepo = AndroidAddressRepository(sqlHelper)
                 labelRepo = AndroidLabelRepository(sqlHelper, ctx)
-                messageRepo = AndroidMessageRepository(sqlHelper)
+                messageRepo = AndroidMessageRepository(sqlHelper, ctx.preferences)
                 proofOfWorkRepo = AndroidProofOfWorkRepository(sqlHelper).also { powRepo = it }
-                networkHandler = NioNetworkHandler()
+                networkHandler = NioNetworkHandler(4)
                 listener = getMessageListener(ctx)
                 labeler = Singleton.labeler
                 preferences.sendPubkeyOnIdentityCreation = false
+                preferences.port = context.preferences.listeningPort
             }
         }
 
@@ -132,8 +131,6 @@ object Singleton {
 
     fun getAddressRepository(ctx: Context) = getBitmessageContext(ctx).addresses as AndroidAddressRepository
 
-    fun getProofOfWorkRepository(ctx: Context) = powRepo ?: getBitmessageContext(ctx).internals.proofOfWorkRepository
-
     fun getIdentity(ctx: Context): BitmessageAddress? =
         init<BitmessageAddress?>(ctx, { identity }, { identity = it }) { bmc ->
             val identities = bmc.addresses.getIdentities()

app/src/main/java/ch/dissem/apps/abit/service/StartServiceReceiver.kt

@@ -3,18 +3,17 @@ package ch.dissem.apps.abit.service
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
-import ch.dissem.apps.abit.util.NetworkUtils
-import ch.dissem.apps.abit.util.Preferences
+import android.content.Intent.ACTION_BOOT_COMPLETED
+import ch.dissem.apps.abit.util.network
+import ch.dissem.apps.abit.util.preferences
 
 /**
  * Starts the Bitmessage "full node" service if conditions allow it
  */
 class StartServiceReceiver : BroadcastReceiver() {
     override fun onReceive(context: Context, intent: Intent?) {
-        if (intent?.action == "android.intent.action.BOOT_COMPLETED") {
-            if (Preferences.isFullNodeActive(context)) {
-                NetworkUtils.enableNode(context, false)
-            }
+        if (intent?.action == ACTION_BOOT_COMPLETED && context.preferences.online) {
+            context.network.enableNode(false)
         }
     }
 }

app/src/main/java/ch/dissem/apps/abit/service/StartupNodeOnWifiService.kt

@@ -1,34 +0,0 @@
-package ch.dissem.apps.abit.service
-
-import android.app.job.JobParameters
-import android.app.job.JobService
-import android.os.Build
-import android.support.annotation.RequiresApi
-import ch.dissem.apps.abit.util.NetworkUtils
-import ch.dissem.apps.abit.util.Preferences
-
-/**
- * Starts the full node if
- * * it is active
- * * it is not already running
- *
- * And stops it when the preconditions for the job (unmetered network) aren't met anymore.
- */
-@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
-class StartupNodeOnWifiService : JobService() {
-    override fun onStartJob(params: JobParameters?): Boolean {
-        val bmc = Singleton.getBitmessageContext(this)
-        if (Preferences.isFullNodeActive(this) && !bmc.isRunning()) {
-            NetworkUtils.doStartBitmessageService(applicationContext)
-        }
-        return true
-    }
-
-    override fun onStopJob(params: JobParameters?) = if (Preferences.isWifiOnly(this)) {
-        // Don't actually stop the service, otherwise it will be stopped after 1 or 10 minutes
-        // depending on Android version.
-        Preferences.isFullNodeActive(this)
-    } else {
-        false
-    }
-}

app/src/main/java/ch/dissem/apps/abit/synchronization/Authenticator.kt

@@ -1,62 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.synchronization
-
-import android.accounts.AbstractAccountAuthenticator
-import android.accounts.Account
-import android.accounts.AccountAuthenticatorResponse
-import android.accounts.NetworkErrorException
-import android.content.Context
-import android.os.Bundle
-
-/**
- * Implement AbstractAccountAuthenticator and stub out all
- * of its methods
- */
-class Authenticator(context: Context) : AbstractAccountAuthenticator(context) {
-
-    override fun editProperties(r: AccountAuthenticatorResponse, s: String) =
-            throw UnsupportedOperationException("Editing properties is not supported")
-
-    // Don't add additional accounts
-    @Throws(NetworkErrorException::class)
-    override fun addAccount(r: AccountAuthenticatorResponse, s: String, s2: String, strings: Array<String>, bundle: Bundle) = null
-
-    // Ignore attempts to confirm credentials
-    @Throws(NetworkErrorException::class)
-    override fun confirmCredentials(r: AccountAuthenticatorResponse, account: Account, bundle: Bundle) = null
-
-    @Throws(NetworkErrorException::class)
-    override fun getAuthToken(r: AccountAuthenticatorResponse, account: Account, s: String, bundle: Bundle) =
-            throw UnsupportedOperationException("Getting an authentication token is not supported")
-
-    override fun getAuthTokenLabel(s: String) =
-            throw UnsupportedOperationException("Getting a label for the auth token is not supported")
-
-    @Throws(NetworkErrorException::class)
-    override fun updateCredentials(r: AccountAuthenticatorResponse, account: Account, s: String, bundle: Bundle) =
-            throw UnsupportedOperationException("Updating user credentials is not supported")
-
-    @Throws(NetworkErrorException::class)
-    override fun hasFeatures(r: AccountAuthenticatorResponse, account: Account, strings: Array<String>) =
-            throw UnsupportedOperationException("Checking features for the account is not supported")
-
-    companion object {
-        val ACCOUNT_SYNC = Account("Bitmessage", "ch.dissem.bitmessage")
-        val ACCOUNT_POW = Account("Proof of Work ", "ch.dissem.bitmessage")
-    }
-}

app/src/main/java/ch/dissem/apps/abit/synchronization/AuthenticatorService.kt

@@ -1,42 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.synchronization
-
-import android.app.Service
-import android.content.Intent
-
-/**
- * A bound Service that instantiates the authenticator
- * when started.
- */
-class AuthenticatorService : Service() {
-    /**
-     * Instance field that stores the authenticator object
-     */
-    private var authenticator: Authenticator? = null
-
-    override fun onCreate() {
-        // Create a new authenticator object
-        authenticator = Authenticator(this)
-    }
-
-    /*
-     * When the system binds to this Service to make the RPC call
-     * return the authenticator's IBinder.
-     */
-    override fun onBind(intent: Intent) = authenticator?.iBinder
-}

app/src/main/java/ch/dissem/apps/abit/synchronization/StubProvider.kt

@@ -1,72 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.synchronization
-
-import android.content.ContentProvider
-import android.content.ContentValues
-import android.net.Uri
-
-/*
- * Define an implementation of ContentProvider that stubs out
- * all methods
- */
-class StubProvider : ContentProvider() {
-
-    /**
-     * Always return true, indicating that the
-     * provider loaded correctly.
-     */
-    override fun onCreate() = true
-
-    /**
-     * Return no type for MIME type
-     */
-    override fun getType(uri: Uri) = null
-
-    /**
-     * query() always returns no results
-     */
-    override fun query(
-        uri: Uri,
-        projection: Array<String>?,
-        selection: String?,
-        selectionArgs: Array<String>?,
-        sortOrder: String?) = null
-
-    /**
-     * insert() always returns null (no URI)
-     */
-    override fun insert(uri: Uri, values: ContentValues?) = null
-
-    /**
-     * delete() always returns "no rows affected" (0)
-     */
-    override fun delete(uri: Uri, selection: String?, selectionArgs: Array<String>?) = 0
-
-    /**
-     * update() always returns "no rows affected" (0)
-     */
-    override fun update(
-        uri: Uri,
-        values: ContentValues?,
-        selection: String?,
-        selectionArgs: Array<String>?) = 0
-
-    companion object {
-        const val AUTHORITY = "ch.dissem.apps.abit.provider"
-    }
-}

app/src/main/java/ch/dissem/apps/abit/synchronization/SyncAdapter.kt

@@ -1,185 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.synchronization
-
-import android.accounts.Account
-import android.accounts.AccountManager
-import android.content.*
-import android.os.Bundle
-import ch.dissem.apps.abit.service.Singleton
-import ch.dissem.apps.abit.synchronization.Authenticator.Companion.ACCOUNT_POW
-import ch.dissem.apps.abit.synchronization.Authenticator.Companion.ACCOUNT_SYNC
-import ch.dissem.apps.abit.synchronization.StubProvider.Companion.AUTHORITY
-import ch.dissem.apps.abit.util.Preferences
-import ch.dissem.bitmessage.exception.DecryptionFailedException
-import ch.dissem.bitmessage.extensions.CryptoCustomMessage
-import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest
-import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest.Request.CALCULATE
-import ch.dissem.bitmessage.extensions.pow.ProofOfWorkRequest.Request.COMPLETE
-import ch.dissem.bitmessage.utils.Singleton.cryptography
-import org.slf4j.LoggerFactory
-import java.io.IOException
-
-/**
- * Sync Adapter to synchronize with the Bitmessage network - fetches
- * new objects and then disconnects.
- */
-class SyncAdapter(context: Context, autoInitialize: Boolean) : AbstractThreadedSyncAdapter(context, autoInitialize) {
-
-    private val bmc = Singleton.getBitmessageContext(context)
-
-    override fun onPerformSync(
-            account: Account,
-            extras: Bundle,
-            authority: String,
-            provider: ContentProviderClient,
-            syncResult: SyncResult
-    ) {
-        try {
-            if (account == ACCOUNT_SYNC) {
-                if (Preferences.isConnectionAllowed(context)) {
-                    syncData()
-                }
-            } else if (account == ACCOUNT_POW) {
-                syncPOW()
-            } else {
-                syncResult.stats.numAuthExceptions++
-            }
-        } catch (e: IOException) {
-            syncResult.stats.numIoExceptions++
-        } catch (e: DecryptionFailedException) {
-            syncResult.stats.numAuthExceptions++
-        }
-
-    }
-
-    private fun syncData() {
-        // If the Bitmessage context acts as a full node, synchronization isn't necessary
-        if (bmc.isRunning()) {
-            LOG.info("Synchronization skipped, Abit is acting as a full node")
-            return
-        }
-        val trustedNode = Preferences.getTrustedNode(context)
-        if (trustedNode == null) {
-            LOG.info("Trusted node not available, disabling synchronization")
-            stopSync(context)
-            return
-        }
-        LOG.info("Synchronization started")
-        bmc.synchronize(
-                trustedNode,
-                Preferences.getTrustedNodePort(context),
-                Preferences.getTimeoutInSeconds(context),
-                true
-        )
-        LOG.info("Synchronization finished")
-    }
-
-    private fun syncPOW() {
-        val identity = Singleton.getIdentity(context)
-        if (identity == null) {
-            LOG.info("No identity available - skipping POW synchronization")
-            return
-        }
-        val trustedNode = Preferences.getTrustedNode(context)
-        if (trustedNode == null) {
-            LOG.info("Trusted node not available, disabling POW synchronization")
-            stopPowSync(context)
-            return
-        }
-        // If the Bitmessage context acts as a full node, synchronization isn't necessary
-        LOG.info("Looking for completed POW")
-
-        val privateKey = identity.privateKey?.privateEncryptionKey ?: throw IllegalStateException("Identity without private key")
-        val signingKey = cryptography().createPublicKey(identity.publicDecryptionKey)
-        val reader = ProofOfWorkRequest.Reader(identity)
-        val powRepo = Singleton.getProofOfWorkRepository(context)
-        val items = powRepo.getItems()
-        for (initialHash in items) {
-            val (objectMessage, nonceTrialsPerByte, extraBytes) = powRepo.getItem(initialHash)
-            val target = cryptography().getProofOfWorkTarget(objectMessage, nonceTrialsPerByte, extraBytes)
-            val cryptoMsg = CryptoCustomMessage(
-                    ProofOfWorkRequest(identity, initialHash, CALCULATE, target))
-            cryptoMsg.signAndEncrypt(identity, signingKey)
-            val response = bmc.send(
-                    trustedNode,
-                    Preferences.getTrustedNodePort(context),
-                    cryptoMsg
-            )
-            if (response.isError) {
-                LOG.error("Server responded with error: ${String(response.getData())}")
-            } else {
-                val (_, _, request, data) = CryptoCustomMessage.read(response, reader).decrypt(privateKey)
-                if (request == COMPLETE) {
-                    bmc.internals.proofOfWorkService.onNonceCalculated(initialHash, data)
-                }
-            }
-        }
-        if (items.isEmpty()) {
-            stopPowSync(context)
-        }
-        LOG.info("Synchronization finished")
-    }
-
-    companion object {
-        private val LOG = LoggerFactory.getLogger(SyncAdapter::class.java)
-
-        private const val SYNC_FREQUENCY = 15 * 60L // seconds
-
-        fun startSync(ctx: Context) {
-            // Create account, if it's missing. (Either first run, or user has deleted account.)
-            val account = addAccount(ctx, ACCOUNT_SYNC)
-
-            // Recommend a schedule for automatic synchronization. The system may modify this based
-            // on other scheduled syncs and network utilization.
-            ContentResolver.addPeriodicSync(account, AUTHORITY, Bundle(), SYNC_FREQUENCY)
-        }
-
-        fun stopSync(ctx: Context) {
-            // Create account, if it's missing. (Either first run, or user has deleted account.)
-            val account = addAccount(ctx, ACCOUNT_SYNC)
-
-            ContentResolver.removePeriodicSync(account, AUTHORITY, Bundle())
-        }
-
-        fun startPowSync(ctx: Context) {
-            // Create account, if it's missing. (Either first run, or user has deleted account.)
-            val account = addAccount(ctx, ACCOUNT_POW)
-
-            // Recommend a schedule for automatic synchronization. The system may modify this based
-            // on other scheduled syncs and network utilization.
-            ContentResolver.addPeriodicSync(account, AUTHORITY, Bundle(), SYNC_FREQUENCY)
-        }
-
-        fun stopPowSync(ctx: Context) {
-            // Create account, if it's missing. (Either first run, or user has deleted account.)
-            val account = addAccount(ctx, ACCOUNT_POW)
-
-            ContentResolver.removePeriodicSync(account, AUTHORITY, Bundle())
-        }
-
-        private fun addAccount(ctx: Context, account: Account): Account {
-            if (AccountManager.get(ctx).addAccountExplicitly(account, null, null)) {
-                // Inform the system that this account supports sync
-                ContentResolver.setIsSyncable(account, AUTHORITY, 1)
-                // Inform the system that this account is eligible for auto sync when the network is up
-                ContentResolver.setSyncAutomatically(account, AUTHORITY, true)
-            }
-            return account
-        }
-    }
-}

app/src/main/java/ch/dissem/apps/abit/synchronization/SyncService.kt

@@ -1,50 +0,0 @@
-/*
- * Copyright 2016 Christian Basler
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package ch.dissem.apps.abit.synchronization
-
-import android.app.Service
-import android.content.Intent
-
-/**
- * Define a Service that returns an IBinder for the
- * sync adapter class, allowing the sync adapter framework to call
- * onPerformSync().
- */
-class SyncService : Service() {
-
-    /**
-     * Instantiate the sync adapter object.
-     */
-    override fun onCreate() = synchronized(syncAdapterLock) {
-        if (syncAdapter == null) {
-            syncAdapter = SyncAdapter(this, true)
-        }
-    }
-
-    /**
-     * Return an object that allows the system to invoke
-     * the sync adapter.
-     */
-    override fun onBind(intent: Intent) = syncAdapter?.syncAdapterBinder
-
-    companion object {
-        // Storage for an instance of the sync adapter
-        private var syncAdapter: SyncAdapter? = null
-        // Object to use as a thread-safe lock
-        private val syncAdapterLock = Any()
-    }
-}

app/src/main/java/ch/dissem/apps/abit/util/Assets.kt

@@ -17,8 +17,6 @@
 package ch.dissem.apps.abit.util
 
 import android.content.Context
-import android.support.annotation.DrawableRes
-import android.support.annotation.StringRes
 import ch.dissem.apps.abit.R
 import ch.dissem.bitmessage.entity.Plaintext
 import java.io.IOException
@@ -43,28 +41,25 @@ object Assets {
         } catch (e: IOException) {
             throw RuntimeException(e)
         }
-
-    }
-
-    @DrawableRes
-    fun getStatusDrawable(status: Plaintext.Status) = when (status) {
-        Plaintext.Status.RECEIVED -> 0
-        Plaintext.Status.DRAFT -> R.drawable.draft
-        Plaintext.Status.PUBKEY_REQUESTED -> R.drawable.public_key
-        Plaintext.Status.DOING_PROOF_OF_WORK -> R.drawable.ic_notification_proof_of_work
-        Plaintext.Status.SENT -> R.drawable.sent
-        Plaintext.Status.SENT_ACKNOWLEDGED -> R.drawable.sent_acknowledged
-        else -> 0
-    }
-
-    @StringRes
-    fun getStatusString(status: Plaintext.Status) = when (status) {
-        Plaintext.Status.RECEIVED -> R.string.status_received
-        Plaintext.Status.DRAFT -> R.string.status_draft
-        Plaintext.Status.PUBKEY_REQUESTED -> R.string.status_public_key
-        Plaintext.Status.DOING_PROOF_OF_WORK -> R.string.proof_of_work_title
-        Plaintext.Status.SENT -> R.string.status_sent
-        Plaintext.Status.SENT_ACKNOWLEDGED -> R.string.status_sent_acknowledged
-        else -> 0
     }
 }
+
+fun Plaintext.Status.getDrawable() = when (this) {
+    Plaintext.Status.RECEIVED -> 0
+    Plaintext.Status.DRAFT -> R.drawable.draft
+    Plaintext.Status.PUBKEY_REQUESTED -> R.drawable.public_key
+    Plaintext.Status.DOING_PROOF_OF_WORK -> R.drawable.ic_notification_proof_of_work
+    Plaintext.Status.SENT -> R.drawable.sent
+    Plaintext.Status.SENT_ACKNOWLEDGED -> R.drawable.sent_acknowledged
+    else -> 0
+}
+
+fun Plaintext.Status.getString() = when (this) {
+    Plaintext.Status.RECEIVED -> R.string.status_received
+    Plaintext.Status.DRAFT -> R.string.status_draft
+    Plaintext.Status.PUBKEY_REQUESTED -> R.string.status_public_key
+    Plaintext.Status.DOING_PROOF_OF_WORK -> R.string.proof_of_work_title
+    Plaintext.Status.SENT -> R.string.status_sent
+    Plaintext.Status.SENT_ACKNOWLEDGED -> R.string.status_sent_acknowledged
+    else -> 0
+}

app/src/main/java/ch/dissem/apps/abit/util/Constants.kt

@@ -22,14 +22,14 @@ import java.util.regex.Pattern
  * @author Christian Basler
  */
 object Constants {
+    const val PREFERENCE_ONLINE = "online"
     const val PREFERENCE_WIFI_ONLY = "wifi_only"
-    const val PREFERENCE_TRUSTED_NODE = "trusted_node"
-    const val PREFERENCE_SYNC_TIMEOUT = "sync_timeout"
-    const val PREFERENCE_SERVER_POW = "server_pow"
-    const val PREFERENCE_FULL_NODE = "full_node"
+    const val PREFERENCE_REQUIRE_CHARGING = "require_charging"
+    const val PREFERENCE_EMULATE_CONVERSATIONS = "emulate_conversations"
     const val PREFERENCE_REQUEST_ACK = "request_acknowledgments"
     const val PREFERENCE_POW_AVERAGE = "average_pow_time_ms"
     const val PREFERENCE_POW_COUNT = "pow_count"
+    const val PREFERENCE_SEPARATE_IDENTITIES = "separate_identities"
 
     const val BITMESSAGE_URL_SCHEMA = "bitmessage:"
 

app/src/main/java/ch/dissem/apps/abit/util/Drawables.kt

@@ -21,13 +21,14 @@ import android.graphics.Bitmap
 import android.graphics.Canvas
 import android.graphics.Color.BLACK
 import android.graphics.Color.WHITE
+import android.graphics.drawable.Drawable
 import android.util.Base64
 import android.util.Base64.NO_WRAP
 import android.util.Base64.URL_SAFE
 import android.view.Menu
 import android.view.MenuItem
-import ch.dissem.apps.abit.Identicon
 import ch.dissem.apps.abit.R
+import ch.dissem.apps.abit.util.Drawables.QR_CODE_SIZE
 import ch.dissem.bitmessage.entity.BitmessageAddress
 import com.google.zxing.BarcodeFormat
 import com.google.zxing.MultiFormatWriter
@@ -42,61 +43,61 @@ import java.io.ByteArrayOutputStream
  * Some helper methods to work with drawables.
  */
 object Drawables {
-    private val LOG = LoggerFactory.getLogger(Drawables::class.java)
+    internal val LOG = LoggerFactory.getLogger(Drawables::class.java)
 
-    private const val QR_CODE_SIZE = 350
+    internal const val QR_CODE_SIZE = 350
 
     fun addIcon(ctx: Context, menu: Menu, menuItem: Int, icon: IIcon): MenuItem {
         val item = menu.findItem(menuItem)
         item.icon = IconicsDrawable(ctx, icon).colorRes(R.color.colorPrimaryDarkText).actionBar()
         return item
     }
-
-    fun toBitmap(identicon: Identicon, width: Int, height: Int = width): Bitmap {
-        val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
-        val canvas = Canvas(bitmap)
-        identicon.setBounds(0, 0, canvas.width, canvas.height)
-        identicon.draw(canvas)
-        return bitmap
-    }
-
-    fun qrCode(address: BitmessageAddress?): Bitmap? {
-        if (address == null) {
-            return null
-        }
-        val link = StringBuilder()
-        link.append(Constants.BITMESSAGE_URL_SCHEMA)
-        link.append(address.address)
-        if (address.alias != null) {
-            link.append("?label=").append(address.alias)
-        }
-        address.pubkey?.apply {
-            link.append(if (address.alias == null) '?' else '&')
-            val pubkey = ByteArrayOutputStream()
-            writer().writeUnencrypted(pubkey)
-            link.append("pubkey=").append(Base64.encodeToString(pubkey.toByteArray(), URL_SAFE or NO_WRAP))
-
-        }
-        val result: BitMatrix
-        try {
-            result = MultiFormatWriter().encode(link.toString(),
-                    BarcodeFormat.QR_CODE, QR_CODE_SIZE, QR_CODE_SIZE, null)
-        } catch (e: WriterException) {
-            LOG.error(e.message, e)
-            return null
-        }
-
-        val w = result.width
-        val h = result.height
-        val pixels = IntArray(w * h)
-        for (y in 0 until h) {
-            val offset = y * w
-            for (x in 0 until w) {
-                pixels[offset + x] = if (result.get(x, y)) BLACK else WHITE
-            }
-        }
-        val bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888)
-        bitmap.setPixels(pixels, 0, QR_CODE_SIZE, 0, 0, w, h)
-        return bitmap
-    }
+}
+
+fun Drawable.toBitmap(width: Int, height: Int = width): Bitmap {
+    val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
+    val canvas = Canvas(bitmap)
+    setBounds(0, 0, canvas.width, canvas.height)
+    draw(canvas)
+    return bitmap
+}
+
+fun BitmessageAddress.qrCode(): Bitmap? {
+    val link = StringBuilder()
+    link.append(Constants.BITMESSAGE_URL_SCHEMA)
+    link.append(address)
+    if (alias != null) {
+        link.append("?label=").append(alias)
+    }
+    pubkey?.apply {
+        link.append(if (alias == null) '?' else '&')
+        val pubkey = ByteArrayOutputStream()
+        writer().writeUnencrypted(pubkey)
+        link.append("pubkey=")
+            .append(Base64.encodeToString(pubkey.toByteArray(), URL_SAFE or NO_WRAP))
+
+    }
+    val result: BitMatrix
+    try {
+        result = MultiFormatWriter().encode(
+            link.toString(),
+            BarcodeFormat.QR_CODE, QR_CODE_SIZE, QR_CODE_SIZE, null
+        )
+    } catch (e: WriterException) {
+        Drawables.LOG.error(e.message, e)
+        return null
+    }
+
+    val w = result.width
+    val h = result.height
+    val pixels = IntArray(w * h)
+    for (y in 0 until h) {
+        val offset = y * w
+        for (x in 0 until w) {
+            pixels[offset + x] = if (result.get(x, y)) BLACK else WHITE
+        }
+    }
+    val bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888)
+    bitmap.setPixels(pixels, 0, QR_CODE_SIZE, 0, 0, w, h)
+    return bitmap
 }

app/src/main/java/ch/dissem/apps/abit/util/FabUtils.kt

@@ -1,31 +0,0 @@
-package ch.dissem.apps.abit.util
-
-import android.support.annotation.DrawableRes
-import ch.dissem.apps.abit.MainActivity
-import ch.dissem.apps.abit.R
-import io.github.kobakei.materialfabspeeddial.FabSpeedDial
-import io.github.kobakei.materialfabspeeddial.FabSpeedDialMenu
-
-/**
- * Utilities to work with the common floating action button in the main activity
- */
-object FabUtils {
-    fun initFab(activity: MainActivity, @DrawableRes drawableRes: Int, menu: FabSpeedDialMenu): FabSpeedDial {
-        val fab = activity.floatingActionButton ?: throw IllegalStateException("Fab must not be null")
-        fab.removeAllOnMenuItemClickListeners()
-        fab.show()
-        fab.closeMenu()
-        val mainFab = fab.mainFab
-        mainFab.setImageResource(drawableRes)
-        fab.setMenu(menu)
-        fab.addOnStateChangeListener { isOpened: Boolean ->
-            if (isOpened) {
-                // It will be turned 45 degrees, which makes an x out of the +
-                mainFab.setImageResource(R.drawable.ic_action_add)
-            } else {
-                mainFab.setImageResource(drawableRes)
-            }
-        }
-        return fab
-    }
-}

app/src/main/java/ch/dissem/apps/abit/util/Labels.kt

@@ -1,45 +1,42 @@
 package ch.dissem.apps.abit.util
 
 import android.content.Context
-import android.support.annotation.ColorInt
-
+import androidx.annotation.ColorInt
+import ch.dissem.apps.abit.R
+import ch.dissem.bitmessage.entity.valueobject.Label
 import com.mikepenz.community_material_typeface_library.CommunityMaterial
 import com.mikepenz.google_material_typeface_library.GoogleMaterial
 import com.mikepenz.iconics.typeface.IIcon
 
-import ch.dissem.apps.abit.R
-import ch.dissem.bitmessage.entity.valueobject.Label
-
-/**
- * Helper class to help with translating the default labels, getting label colors and so on.
+/*
+ * Helper methods to help with translating the default labels, getting label colors and so on.
  */
-object Labels {
-    fun getText(label: Label, ctx: Context): String = getText(label.type, label.toString(), ctx)!!
 
-    fun getText(type: Label.Type?, alternative: String?, ctx: Context) = when (type) {
-        Label.Type.INBOX -> ctx.getString(R.string.inbox)
-        Label.Type.DRAFT -> ctx.getString(R.string.draft)
-        Label.Type.OUTBOX -> ctx.getString(R.string.outbox)
-        Label.Type.SENT -> ctx.getString(R.string.sent)
-        Label.Type.UNREAD -> ctx.getString(R.string.unread)
-        Label.Type.TRASH -> ctx.getString(R.string.trash)
-        Label.Type.BROADCAST -> ctx.getString(R.string.broadcasts)
-        else -> alternative
-    }
+fun Label.getText(ctx: Context): String = type?.getText(toString(), ctx) ?: toString()
 
-    fun getIcon(label: Label): IIcon = when (label.type) {
-        Label.Type.INBOX -> GoogleMaterial.Icon.gmd_inbox
-        Label.Type.DRAFT -> CommunityMaterial.Icon.cmd_file
-        Label.Type.OUTBOX -> CommunityMaterial.Icon.cmd_inbox_arrow_up
-        Label.Type.SENT -> CommunityMaterial.Icon.cmd_send
-        Label.Type.BROADCAST -> CommunityMaterial.Icon.cmd_rss
-        Label.Type.UNREAD -> GoogleMaterial.Icon.gmd_markunread_mailbox
-        Label.Type.TRASH -> GoogleMaterial.Icon.gmd_delete
-        else -> CommunityMaterial.Icon.cmd_label
-    }
-
-    @ColorInt
-    fun getColor(label: Label) = if (label.type == null) {
-        label.color
-    } else 0xFF000000.toInt()
+fun Label.Type.getText(alternative: String?, ctx: Context) = when (this) {
+    Label.Type.INBOX -> ctx.getString(R.string.inbox)
+    Label.Type.DRAFT -> ctx.getString(R.string.draft)
+    Label.Type.OUTBOX -> ctx.getString(R.string.outbox)
+    Label.Type.SENT -> ctx.getString(R.string.sent)
+    Label.Type.UNREAD -> ctx.getString(R.string.unread)
+    Label.Type.TRASH -> ctx.getString(R.string.trash)
+    Label.Type.BROADCAST -> ctx.getString(R.string.broadcasts)
+    else -> alternative
 }
+
+fun Label.getIcon(): IIcon = when (type) {
+    Label.Type.INBOX -> GoogleMaterial.Icon.gmd_inbox
+    Label.Type.DRAFT -> CommunityMaterial.Icon.cmd_file
+    Label.Type.OUTBOX -> CommunityMaterial.Icon.cmd_inbox_arrow_up
+    Label.Type.SENT -> CommunityMaterial.Icon.cmd_send
+    Label.Type.BROADCAST -> CommunityMaterial.Icon.cmd_rss
+    Label.Type.UNREAD -> GoogleMaterial.Icon.gmd_markunread_mailbox
+    Label.Type.TRASH -> GoogleMaterial.Icon.gmd_delete
+    else -> CommunityMaterial.Icon.cmd_label
+}
+
+@ColorInt
+fun Label.getColor(@ColorInt default: Int) = if (type == null) {
+    color
+} else default

app/src/main/java/ch/dissem/apps/abit/util/NetworkUtils.kt

@@ -7,58 +7,71 @@ import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
 import android.os.Build
-import android.support.annotation.RequiresApi
-import android.support.v4.content.ContextCompat
-import ch.dissem.apps.abit.MainActivity
 import ch.dissem.apps.abit.dialog.FullNodeDialogActivity
-import ch.dissem.apps.abit.service.BitmessageService
-import ch.dissem.apps.abit.service.StartupNodeOnWifiService
+import ch.dissem.apps.abit.service.CleanupService
+import ch.dissem.apps.abit.service.NodeStartupService
+import java.lang.ref.WeakReference
+import java.util.concurrent.TimeUnit
 
+val Context.network get() = NetworkUtils.getInstance(this)
 
-object NetworkUtils {
+class NetworkUtils internal constructor(private val ctx: Context) {
 
-    fun enableNode(ctx: Context, ask: Boolean = true) {
-        Preferences.setFullNodeActive(ctx, true)
-        if (Preferences.isWifiOnly(ctx)) {
-            if (Preferences.isConnectionAllowed(ctx)) {
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                    scheduleNodeStart(ctx)
-                } else {
-                    doStartBitmessageService(ctx)
-                    MainActivity.updateNodeSwitch()
-                }
-            } else if (ask) {
-                val dialogIntent = Intent(ctx, FullNodeDialogActivity::class.java)
-                if (ctx !is Activity) {
-                    dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
-                    ctx.sendBroadcast(Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS))
-                }
-                ctx.startActivity(dialogIntent)
-            } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-                scheduleNodeStart(ctx)
+    private val jobScheduler by lazy { ctx.getSystemService(Context.JOB_SCHEDULER_SERVICE) as JobScheduler }
+
+    fun enableNode(ask: Boolean = true) {
+        if (ask && !ctx.preferences.connectionAllowed) {
+            // Ask for connection
+            val dialogIntent = Intent(ctx, FullNodeDialogActivity::class.java)
+            if (ctx !is Activity) {
+                dialogIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                ctx.sendBroadcast(Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS))
             }
+            ctx.startActivity(dialogIntent)
         } else {
-            doStartBitmessageService(ctx)
-            MainActivity.updateNodeSwitch()
+            scheduleNodeStart()
         }
     }
 
-    fun doStartBitmessageService(ctx: Context) {
-        ContextCompat.startForegroundService(ctx, Intent(ctx, BitmessageService::class.java))
+    fun disableNode() {
+        jobScheduler.cancelAll()
     }
 
-    fun disableNode(ctx: Context) {
-        Preferences.setFullNodeActive(ctx, false)
-        ctx.stopService(Intent(ctx, BitmessageService::class.java))
+    fun scheduleNodeStart() {
+        JobInfo.Builder(0, ComponentName(ctx, NodeStartupService::class.java)).let { builder ->
+            when {
+                ctx.preferences.wifiOnly ->
+                    builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
+                Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ->
+                    builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_NOT_ROAMING)
+                else ->
+                    builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY)
+            }
+            builder.setRequiresCharging(ctx.preferences.requireCharging)
+            builder.setPersisted(true)
+
+            jobScheduler.schedule(builder.build())
+        }
+
+        JobInfo.Builder(1, ComponentName(ctx, CleanupService::class.java)).let { builder ->
+            builder.setPeriodic(TimeUnit.DAYS.toMillis(1))
+            builder.setRequiresDeviceIdle(true)
+            builder.setRequiresCharging(true)
+
+            jobScheduler.schedule(builder.build())
+        }
     }
 
-    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
-    fun scheduleNodeStart(ctx: Context) {
-        val serviceComponent = ComponentName(ctx, StartupNodeOnWifiService::class.java)
-        val builder = JobInfo.Builder(0, serviceComponent)
-        builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
-        builder.setBackoffCriteria(0L, JobInfo.BACKOFF_POLICY_LINEAR)
-        val jobScheduler = ctx.getSystemService(Context.JOB_SCHEDULER_SERVICE) as JobScheduler
-        jobScheduler.schedule(builder.build())
+    companion object {
+        private var instance: WeakReference<NetworkUtils>? = null
+
+        internal fun getInstance(ctx: Context): NetworkUtils {
+            var networkUtils = instance?.get()
+            if (networkUtils == null) {
+                networkUtils = NetworkUtils(ctx.applicationContext)
+                instance = WeakReference(networkUtils)
+            }
+            return networkUtils
+        }
     }
 }

app/src/main/java/ch/dissem/apps/abit/util/Observable.kt

@@ -1,37 +0,0 @@
-package ch.dissem.apps.abit.util
-
-import kotlin.properties.Delegates
-
-/**
- * A simple observable implementation that should be mostly
- */
-class Observable<T>(value: T) {
-    private val observers = mutableMapOf<Any, (T) -> Unit>()
-
-    var value: T by Delegates.observable(value, { _, old, new ->
-        if (old != new) {
-            observers.values.forEach { it.invoke(new) }
-        }
-    })
-
-    /**
-     * The key will make sure the observer can easily be removed. Usually the key should be either
-     * the object that created the observer, or the observer itself, if it's easily available.
-     *
-     * Note that a map is used for observers, so if you define more than one observer with the same
-     * key, all previous ones will be removed. Also, the observers will be notified in no specific
-     * order.
-     *
-     * To prevent memory leaks, the observer must be removed if it isn't used anymore.
-     */
-    fun addObserver(key: Any, observer: (T) -> Unit) {
-        observers[key] = observer
-    }
-
-    /**
-     * Remove the observer that was registered with the given key.
-     */
-    fun removeObserver(key: Any) {
-        observers.remove(key)
-    }
-}

app/src/main/java/ch/dissem/apps/abit/util/PRNGFixes.java

@@ -1,344 +0,0 @@
-/*
- * This software is provided 'as-is', without any express or implied
- * warranty.  In no event will Google be held liable for any damages
- * arising from the use of this software.
- *
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute it
- * freely, as long as the origin is not misrepresented.
- */
-
-package ch.dissem.apps.abit.util;
-
-import android.os.Build;
-import android.os.Process;
-import android.util.Log;
-
-import java.io.ByteArrayOutputStream;
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
-import java.io.UnsupportedEncodingException;
-import java.security.NoSuchAlgorithmException;
-import java.security.Provider;
-import java.security.SecureRandom;
-import java.security.SecureRandomSpi;
-import java.security.Security;
-
-/**
- * Fixes for the output of the default PRNG having low entropy.
- * <p/>
- * The fixes need to be applied via {@link #apply()} before any use of Java
- * Cryptography Architecture primitives. A good place to invoke them is in the
- * application's {@code onCreate}.
- *
- * @see <a href="http://android-developers.blogspot.ch/2013/08/some-securerandom-thoughts.html">
- * http://android-developers.blogspot.ch/2013/08/some-securerandom-thoughts.html</a>
- */
-public final class PRNGFixes {
-
-    private static final int VERSION_CODE_JELLY_BEAN = 16;
-    private static final int VERSION_CODE_JELLY_BEAN_MR2 = 18;
-    private static final byte[] BUILD_FINGERPRINT_AND_DEVICE_SERIAL =
-        getBuildFingerprintAndDeviceSerial();
-
-    /**
-     * Hidden constructor to prevent instantiation.
-     */
-    private PRNGFixes() {
-    }
-
-    /**
-     * Applies all fixes.
-     *
-     * @throws SecurityException if a fix is needed but could not be applied.
-     */
-    public static void apply() {
-        applyOpenSSLFix();
-        installLinuxPRNGSecureRandom();
-    }
-
-    /**
-     * Applies the fix for OpenSSL PRNG having low entropy. Does nothing if the
-     * fix is not needed.
-     *
-     * @throws SecurityException if the fix is needed but could not be applied.
-     */
-    private static void applyOpenSSLFix() throws SecurityException {
-        if ((Build.VERSION.SDK_INT < VERSION_CODE_JELLY_BEAN)
-            || (Build.VERSION.SDK_INT > VERSION_CODE_JELLY_BEAN_MR2)) {
-            // No need to apply the fix
-            return;
-        }
-
-        try {
-            // Mix in the device- and invocation-specific seed.
-            Class.forName("org.apache.harmony.xnet.provider.jsse.NativeCrypto")
-                .getMethod("RAND_seed", byte[].class)
-                .invoke(null, (Object) generateSeed());
-
-            // Mix output of Linux PRNG into OpenSSL's PRNG
-            int bytesRead = (Integer) Class.forName(
-                "org.apache.harmony.xnet.provider.jsse.NativeCrypto")
-                .getMethod("RAND_load_file", String.class, long.class)
-                .invoke(null, "/dev/urandom", 1024);
-            if (bytesRead != 1024) {
-                throw new IOException(
-                    "Unexpected number of bytes read from Linux PRNG: "
-                        + bytesRead);
-            }
-        } catch (Exception e) {
-            throw new SecurityException("Failed to seed OpenSSL PRNG", e);
-        }
-    }
-
-    /**
-     * Installs a Linux PRNG-backed {@code SecureRandom} implementation as the
-     * default. Does nothing if the implementation is already the default or if
-     * there is not need to install the implementation.
-     *
-     * @throws SecurityException if the fix is needed but could not be applied.
-     */
-    private static void installLinuxPRNGSecureRandom()
-        throws SecurityException {
-        if (Build.VERSION.SDK_INT > VERSION_CODE_JELLY_BEAN_MR2) {
-            // No need to apply the fix
-            return;
-        }
-
-        // Install a Linux PRNG-based SecureRandom implementation as the
-        // default, if not yet installed.
-        Provider[] secureRandomProviders =
-            Security.getProviders("SecureRandom.SHA1PRNG");
-        if ((secureRandomProviders == null)
-            || (secureRandomProviders.length < 1)
-            || (!LinuxPRNGSecureRandomProvider.class.equals(
-            secureRandomProviders[0].getClass()))) {
-            Security.insertProviderAt(new LinuxPRNGSecureRandomProvider(), 1);
-        }
-
-        // Assert that new SecureRandom() and
-        // SecureRandom.getInstance("SHA1PRNG") return a SecureRandom backed
-        // by the Linux PRNG-based SecureRandom implementation.
-        SecureRandom rng1 = new SecureRandom();
-        if (!LinuxPRNGSecureRandomProvider.class.equals(
-            rng1.getProvider().getClass())) {
-            throw new SecurityException(
-                "new SecureRandom() backed by wrong Provider: "
-                    + rng1.getProvider().getClass());
-        }
-
-        SecureRandom rng2;
-        try {
-            rng2 = SecureRandom.getInstance("SHA1PRNG");
-        } catch (NoSuchAlgorithmException e) {
-            throw new SecurityException("SHA1PRNG not available", e);
-        }
-        if (!LinuxPRNGSecureRandomProvider.class.equals(
-            rng2.getProvider().getClass())) {
-            throw new SecurityException(
-                "SecureRandom.getInstance(\"SHA1PRNG\") backed by wrong"
-                    + " Provider: " + rng2.getProvider().getClass());
-        }
-    }
-
-    /**
-     * {@code Provider} of {@code SecureRandom} engines which pass through
-     * all requests to the Linux PRNG.
-     */
-    private static class LinuxPRNGSecureRandomProvider extends Provider {
-
-        LinuxPRNGSecureRandomProvider() {
-            super("LinuxPRNG",
-                1.0,
-                "A Linux-specific random number provider that uses"
-                    + " /dev/urandom");
-            // Although /dev/urandom is not a SHA-1 PRNG, some apps
-            // explicitly request a SHA1PRNG SecureRandom and we thus need to
-            // prevent them from getting the default implementation whose output
-            // may have low entropy.
-            put("SecureRandom.SHA1PRNG", LinuxPRNGSecureRandom.class.getName());
-            put("SecureRandom.SHA1PRNG ImplementedIn", "Software");
-        }
-    }
-
-    /**
-     * {@link SecureRandomSpi} which passes all requests to the Linux PRNG
-     * ({@code /dev/urandom}).
-     */
-    @SuppressWarnings("JavaDoc")
-    public static class LinuxPRNGSecureRandom extends SecureRandomSpi {
-
-        /*
-         * IMPLEMENTATION NOTE: Requests to generate bytes and to mix in a seed
-         * are passed through to the Linux PRNG (/dev/urandom). Instances of
-         * this class seed themselves by mixing in the current time, PID, UID,
-         * build fingerprint, and hardware serial number (where available) into
-         * Linux PRNG.
-         *
-         * Concurrency: Read requests to the underlying Linux PRNG are
-         * serialized (on sLock) to ensure that multiple threads do not get
-         * duplicated PRNG output.
-         */
-
-        private static final File URANDOM_FILE = new File("/dev/urandom");
-
-        private static final Object sLock = new Object();
-
-        /**
-         * Input stream for reading from Linux PRNG or {@code null} if not yet
-         * opened.
-         *
-         * @GuardedBy("sLock")
-         */
-        private static DataInputStream sUrandomIn;
-
-        /**
-         * Output stream for writing to Linux PRNG or {@code null} if not yet
-         * opened.
-         *
-         * @GuardedBy("sLock")
-         */
-        private static OutputStream sUrandomOut;
-
-        /**
-         * Whether this engine instance has been seeded. This is needed because
-         * each instance needs to seed itself if the client does not explicitly
-         * seed it.
-         */
-        private boolean mSeeded;
-
-        @Override
-        protected void engineSetSeed(byte[] bytes) {
-            try {
-                OutputStream out;
-                synchronized (sLock) {
-                    out = getUrandomOutputStream();
-                }
-                out.write(bytes);
-                out.flush();
-            } catch (IOException e) {
-                // On a small fraction of devices /dev/urandom is not writable.
-                // Log and ignore.
-                Log.w(PRNGFixes.class.getSimpleName(),
-                    "Failed to mix seed into " + URANDOM_FILE);
-            } finally {
-                mSeeded = true;
-            }
-        }
-
-        @Override
-        protected void engineNextBytes(byte[] bytes) {
-            if (!mSeeded) {
-                // Mix in the device- and invocation-specific seed.
-                engineSetSeed(generateSeed());
-            }
-
-            try {
-                DataInputStream in;
-                synchronized (sLock) {
-                    in = getUrandomInputStream();
-                }
-                //noinspection SynchronizationOnLocalVariableOrMethodParameter
-                synchronized (in) {
-                    in.readFully(bytes);
-                }
-            } catch (IOException e) {
-                throw new SecurityException(
-                    "Failed to read from " + URANDOM_FILE, e);
-            }
-        }
-
-        @Override
-        protected byte[] engineGenerateSeed(int size) {
-            byte[] seed = new byte[size];
-            engineNextBytes(seed);
-            return seed;
-        }
-
-        private DataInputStream getUrandomInputStream() {
-            synchronized (sLock) {
-                if (sUrandomIn == null) {
-                    // NOTE: Consider inserting a BufferedInputStream between
-                    // DataInputStream and FileInputStream if you need higher
-                    // PRNG output performance and can live with future PRNG
-                    // output being pulled into this process prematurely.
-                    try {
-                        sUrandomIn = new DataInputStream(
-                            new FileInputStream(URANDOM_FILE));
-                    } catch (IOException e) {
-                        throw new SecurityException("Failed to open "
-                            + URANDOM_FILE + " for reading", e);
-                    }
-                }
-                return sUrandomIn;
-            }
-        }
-
-        private OutputStream getUrandomOutputStream() throws IOException {
-            synchronized (sLock) {
-                if (sUrandomOut == null) {
-                    sUrandomOut = new FileOutputStream(URANDOM_FILE);
-                }
-                return sUrandomOut;
-            }
-        }
-    }
-
-    /**
-     * Generates a device- and invocation-specific seed to be mixed into the
-     * Linux PRNG.
-     */
-    private static byte[] generateSeed() {
-        try {
-            ByteArrayOutputStream seedBuffer = new ByteArrayOutputStream();
-            DataOutputStream seedBufferOut =
-                new DataOutputStream(seedBuffer);
-            seedBufferOut.writeLong(System.currentTimeMillis());
-            seedBufferOut.writeLong(System.nanoTime());
-            seedBufferOut.writeInt(Process.myPid());
-            seedBufferOut.writeInt(Process.myUid());
-            seedBufferOut.write(BUILD_FINGERPRINT_AND_DEVICE_SERIAL);
-            seedBufferOut.close();
-            return seedBuffer.toByteArray();
-        } catch (IOException e) {
-            throw new SecurityException("Failed to generate seed", e);
-        }
-    }
-
-    /**
-     * Gets the hardware serial number of this device.
-     *
-     * @return serial number or {@code null} if not available.
-     */
-    private static String getDeviceSerialNumber() {
-        // We're using the Reflection API because Build.SERIAL is only available
-        // since API Level 9 (Gingerbread, Android 2.3).
-        try {
-            return (String) Build.class.getField("SERIAL").get(null);
-        } catch (Exception ignored) {
-            return null;
-        }
-    }
-
-    private static byte[] getBuildFingerprintAndDeviceSerial() {
-        StringBuilder result = new StringBuilder();
-        String fingerprint = Build.FINGERPRINT;
-        if (fingerprint != null) {
-            result.append(fingerprint);
-        }
-        String serial = getDeviceSerialNumber();
-        if (serial != null) {
-            result.append(serial);
-        }
-        try {
-            return result.toString().getBytes("UTF-8");
-        } catch (UnsupportedEncodingException e) {
-            throw new RuntimeException("UTF-8 encoding not supported");
-        }
-    }
-}

app/src/main/java/ch/dissem/apps/abit/util/PowStats.kt

@@ -23,7 +23,7 @@ object PowStats {
                 powCount = preferences.getLong(PREFERENCE_POW_COUNT, 0L)
             }
         }
-        return (BigInteger.valueOf(averagePowUnitTime) * BigInteger(target) / TWO_POW_64).toLong()
+        return (averagePowUnitTime * BigInteger(target) / TWO_POW_64).toLong()
     }
 
     fun addPow(ctx: Context, time: Long, target: ByteArray) {
@@ -32,7 +32,7 @@ object PowStats {
         synchronized(this) {
             powCount++
             averagePowUnitTime = (
-                (BigInteger.valueOf(averagePowUnitTime) * powCountBefore + (BigInteger.valueOf(time) * TWO_POW_64 / targetBigInt)) / BigInteger.valueOf(powCount)
+                (averagePowUnitTime * powCountBefore + (time * TWO_POW_64 / targetBigInt)) / powCount
                 ).toLong()
 
             val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
@@ -42,4 +42,7 @@ object PowStats {
                 .apply()
         }
     }
+
+    private operator fun Long.times(other: BigInteger) = this.toBigInteger() * other
+    private operator fun BigInteger.div(other: Long) = this / other.toBigInteger()
 }

app/src/main/java/ch/dissem/apps/abit/util/Preferences.kt

@@ -17,113 +17,67 @@
 package ch.dissem.apps.abit.util
 
 import android.content.Context
-import android.preference.PreferenceManager
-import ch.dissem.apps.abit.R
-import ch.dissem.apps.abit.notification.ErrorNotification
-import ch.dissem.apps.abit.util.Constants.PREFERENCE_FULL_NODE
+import android.content.Intent
+import android.content.IntentFilter
+import android.os.BatteryManager
+import android.os.Build
+import ch.dissem.apps.abit.service.Singleton
+import ch.dissem.apps.abit.util.Constants.PREFERENCE_EMULATE_CONVERSATIONS
+import ch.dissem.apps.abit.util.Constants.PREFERENCE_ONLINE
 import ch.dissem.apps.abit.util.Constants.PREFERENCE_REQUEST_ACK
-import ch.dissem.apps.abit.util.Constants.PREFERENCE_SYNC_TIMEOUT
-import ch.dissem.apps.abit.util.Constants.PREFERENCE_TRUSTED_NODE
+import ch.dissem.apps.abit.util.Constants.PREFERENCE_REQUIRE_CHARGING
+import ch.dissem.apps.abit.util.Constants.PREFERENCE_SEPARATE_IDENTITIES
 import ch.dissem.apps.abit.util.Constants.PREFERENCE_WIFI_ONLY
+import org.jetbrains.anko.batteryManager
 import org.jetbrains.anko.connectivityManager
+import org.jetbrains.anko.defaultSharedPreferences
 import org.slf4j.LoggerFactory
 import java.io.File
-import java.io.IOException
-import java.net.InetAddress
+import java.lang.ref.WeakReference
+
+
+val Context.preferences get() = Preferences.getInstance(this)
 
 /**
  * @author Christian Basler
  */
-object Preferences {
+class Preferences internal constructor(private val ctx: Context) {
     private val LOG = LoggerFactory.getLogger(Preferences::class.java)
 
-    fun useTrustedNode(ctx: Context): Boolean {
-        val trustedNode = getPreference(ctx, PREFERENCE_TRUSTED_NODE) ?: return false
-        return trustedNode.trim { it <= ' ' }.isNotEmpty()
-    }
+    val connectionAllowed get() = isAllowedForWiFi && isAllowedForCharging
 
-    /**
-     * Warning, this method might do a network call and therefore can't be called from
-     * the UI thread.
-     */
-    @Throws(IOException::class)
-    fun getTrustedNode(ctx: Context): InetAddress? {
-        var trustedNode: String = getPreference(ctx, PREFERENCE_TRUSTED_NODE) ?: return null
-        trustedNode = trustedNode.trim { it <= ' ' }
-        if (trustedNode.isEmpty()) return null
+    private val isAllowedForWiFi get() = !wifiOnly || !ctx.connectivityManager.isActiveNetworkMetered
 
-        if (trustedNode.matches("^(?![0-9a-fA-F]*:[0-9a-fA-F]*:).*(:[0-9]+)$".toRegex())) {
-            val index = trustedNode.lastIndexOf(':')
-            trustedNode = trustedNode.substring(0, index)
+    private val isAllowedForCharging get() = !requireCharging || isCharging
+
+    private val sharedPreferences = ctx.defaultSharedPreferences
+
+    private val isCharging
+        get() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            ctx.batteryManager.isCharging
+        } else {
+            val intent = ctx.registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
+            val status = intent?.getIntExtra(BatteryManager.EXTRA_STATUS, -1)
+            status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL
         }
-        return InetAddress.getByName(trustedNode)
-    }
 
-    fun getTrustedNodePort(ctx: Context): Int {
-        var trustedNode: String = getPreference(ctx, PREFERENCE_TRUSTED_NODE) ?: return 8444
-        trustedNode = trustedNode.trim { it <= ' ' }
-
-        if (trustedNode.matches("^(?![0-9a-fA-F]*:[0-9a-fA-F]*:).*(:[0-9]+)$".toRegex())) {
-            val index = trustedNode.lastIndexOf(':')
-            val portString = trustedNode.substring(index + 1)
-            try {
-                return Integer.parseInt(portString)
-            } catch (e: NumberFormatException) {
-                ErrorNotification(ctx)
-                        .setError(R.string.error_invalid_sync_port, portString)
-                        .show()
-            }
+    var wifiOnly
+        get() = sharedPreferences.getBoolean(PREFERENCE_WIFI_ONLY, true)
+        set(value) {
+            sharedPreferences.edit()
+                .putBoolean(PREFERENCE_WIFI_ONLY, value)
+                .apply()
         }
-        return 8444
-    }
 
-    fun getTimeoutInSeconds(ctx: Context): Long {
-        val preference = getPreference(ctx, PREFERENCE_SYNC_TIMEOUT) ?: return 120
-        return preference.toLong()
-    }
+    val requireCharging get() = sharedPreferences.getBoolean(PREFERENCE_REQUIRE_CHARGING, true)
 
-    private fun getPreference(ctx: Context, name: String): String? {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
+    val emulateConversations get() = sharedPreferences.getBoolean(PREFERENCE_EMULATE_CONVERSATIONS, true)
 
-        return preferences.getString(name, null)
-    }
+    val exportDirectory by lazy { File(ctx.filesDir, "exports") }
 
-    fun isConnectionAllowed(ctx: Context) = !isWifiOnly(ctx) || !ctx.connectivityManager.isActiveNetworkMetered
+    val requestAcknowledgements = sharedPreferences.getBoolean(PREFERENCE_REQUEST_ACK, true)
 
-    fun isWifiOnly(ctx: Context): Boolean {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
-        return preferences.getBoolean(PREFERENCE_WIFI_ONLY, true)
-    }
-
-    fun setWifiOnly(ctx: Context, status: Boolean) {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
-        preferences.edit().putBoolean(PREFERENCE_WIFI_ONLY, status).apply()
-    }
-
-    fun isFullNodeActive(ctx: Context): Boolean {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
-        return preferences.getBoolean(PREFERENCE_FULL_NODE, false)
-    }
-
-    fun setFullNodeActive(ctx: Context, status: Boolean) {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
-        preferences.edit().putBoolean(PREFERENCE_FULL_NODE, status).apply()
-    }
-
-    fun getExportDirectory(ctx: Context) = File(ctx.filesDir, "exports")
-
-    fun requestAcknowledgements(ctx: Context): Boolean {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
-        return preferences.getBoolean(PREFERENCE_REQUEST_ACK, true)
-    }
-
-    fun setRequestAcknowledgements(ctx: Context, status: Boolean) {
-        val preferences = PreferenceManager.getDefaultSharedPreferences(ctx)
-        preferences.edit().putBoolean(PREFERENCE_REQUEST_ACK, status).apply()
-    }
-
-    fun cleanupExportDirectory(ctx: Context) {
-        val exportDirectory = getExportDirectory(ctx)
+    fun cleanupExportDirectory() {
         if (exportDirectory.exists()) {
             exportDirectory.listFiles().forEach { file ->
                 try {
@@ -136,4 +90,40 @@ object Preferences {
             }
         }
     }
+
+    var online
+        get() = sharedPreferences.getBoolean(PREFERENCE_ONLINE, true)
+        set(value) {
+            sharedPreferences.edit()
+                .putBoolean(PREFERENCE_ONLINE, value)
+                .apply()
+            if (value) {
+                ctx.network.enableNode(true)
+            } else {
+                ctx.network.disableNode()
+            }
+        }
+
+    val separateIdentities
+        get() = sharedPreferences.getBoolean(PREFERENCE_SEPARATE_IDENTITIES, false)
+
+    val currentIdentity
+        get() = Singleton.getIdentity(ctx)
+
+    val listeningPort
+        get() = sharedPreferences.getString("listening_port", null)?.toIntOrNull()
+            ?: 8444
+
+    companion object {
+        private var instance: WeakReference<Preferences>? = null
+
+        internal fun getInstance(ctx: Context): Preferences {
+            var prefs = instance?.get()
+            if (prefs == null) {
+                prefs = Preferences(ctx.applicationContext)
+                instance = WeakReference(prefs)
+            }
+            return prefs
+        }
+    }
 }

app/src/main/res/drawable-v21/bg_swipe_item_left.xml

@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-       Copyright (C) 2015 Haruki Hasegawa
-
-       Licensed under the Apache License, Version 2.0 (the "License");
-       you may not use this file except in compliance with the License.
-       You may obtain a copy of the License at
-
-           http://www.apache.org/licenses/LICENSE-2.0
-
-       Unless required by applicable law or agreed to in writing, software
-       distributed under the License is distributed on an "AS IS" BASIS,
-       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-       See the License for the specific language governing permissions and
-       limitations under the License.
--->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item>
-        <color android:color="@color/bg_swipe_item_trash"/>
-    </item>
-    <item
-        android:drawable="@drawable/ic_item_swipe_trash"
-        android:gravity="right|center_vertical"
-        android:right="16dp"/>
-</layer-list>

app/src/main/res/drawable-v21/bg_swipe_item_right.xml

@@ -1,25 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-       Copyright (C) 2015 Haruki Hasegawa
-
-       Licensed under the Apache License, Version 2.0 (the "License");
-       you may not use this file except in compliance with the License.
-       You may obtain a copy of the License at
-
-           http://www.apache.org/licenses/LICENSE-2.0
-
-       Unless required by applicable law or agreed to in writing, software
-       distributed under the License is distributed on an "AS IS" BASIS,
-       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-       See the License for the specific language governing permissions and
-       limitations under the License.
--->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item>
-        <color android:color="@color/bg_swipe_item_archive"/>
-    </item>
-    <item
-        android:drawable="@drawable/ic_item_swipe_archive"
-        android:gravity="left|center_vertical"
-        android:left="16dp"/>
-</layer-list>

app/src/main/res/drawable-v21/material_showcase_button_bg.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ripple xmlns:android="http://schemas.android.com/apk/res/android"
-        android:color="#ffffff">
-
-    <item
-            android:id="@android:id/mask"
-            android:drawable="@android:color/white"/>
-
-</ripple>

app/src/main/res/drawable/bg_item_swiping_active_state.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-       Copyright (C) 2015 Haruki Hasegawa
-
-       Licensed under the Apache License, Version 2.0 (the "License");
-       you may not use this file except in compliance with the License.
-       You may obtain a copy of the License at
-
-           http://www.apache.org/licenses/LICENSE-2.0
-
-       Unless required by applicable law or agreed to in writing, software
-       distributed under the License is distributed on an "AS IS" BASIS,
-       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-       See the License for the specific language governing permissions and
-       limitations under the License.
--->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item>
-        <color android:color="@color/bg_item_swiping_active_state"/>
-    </item>
-</layer-list>

app/src/main/res/drawable/bg_item_swiping_state.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-       Copyright (C) 2015 Haruki Hasegawa
-
-       Licensed under the Apache License, Version 2.0 (the "License");
-       you may not use this file except in compliance with the License.
-       You may obtain a copy of the License at
-
-           http://www.apache.org/licenses/LICENSE-2.0
-
-       Unless required by applicable law or agreed to in writing, software
-       distributed under the License is distributed on an "AS IS" BASIS,
-       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-       See the License for the specific language governing permissions and
-       limitations under the License.
--->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item>
-        <color android:color="@color/bg_item_swiping_state"/>
-    </item>
-</layer-list>

app/src/main/res/drawable/bg_label.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#000000"/>
+    <corners android:radius="4dp"/>
+    <padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" />
+</shape>

app/src/main/res/drawable/bg_swipe_item_left.xml

@@ -18,9 +18,8 @@
     <item>
         <color android:color="@color/bg_swipe_item_trash"/>
     </item>
-    <item android:right="16dp">
-        <bitmap
-            android:gravity="right|center_vertical"
-            android:src="@drawable/ic_item_swipe_trash"/>
-    </item>
+    <item
+        android:drawable="@drawable/ic_item_swipe_trash"
+        android:gravity="right|center_vertical"
+        android:right="16dp"/>
 </layer-list>

app/src/main/res/drawable/bg_swipe_item_right.xml

@@ -18,9 +18,8 @@
     <item>
         <color android:color="@color/bg_swipe_item_archive"/>
     </item>
-    <item android:left="16dp">
-        <bitmap
-            android:gravity="left|center_vertical"
-            android:src="@drawable/ic_item_swipe_archive"/>
-    </item>
+    <item
+        android:drawable="@drawable/ic_item_swipe_archive"
+        android:gravity="left|center_vertical"
+        android:left="16dp"/>
 </layer-list>

app/src/main/res/drawable/ic_battery_charging.xml

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M15.67,4H14V2h-4v2H8.33C7.6,4 7,4.6 7,5.33V8h5.47L13,7v1h4V5.33C17,4.6 16.4,4 15.67,4z"
+        android:fillAlpha=".3"/>
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M13,12.5h2L11,20v-5.5H9L12.47,8H7v12.67C7,21.4 7.6,22 8.33,22h7.33c0.74,0 1.34,-0.6 1.34,-1.33V8h-4v4.5z"/>
+</vector>

app/src/main/res/drawable/ic_broom.xml

@@ -0,0 +1,8 @@
+<!-- drawable/broom.xml -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="#000" android:pathData="M19.36,2.72L20.78,4.14L15.06,9.85C16.13,11.39 16.28,13.24 15.38,14.44L9.06,8.12C10.26,7.22 12.11,7.37 13.65,8.44L19.36,2.72M5.93,17.57C3.92,15.56 2.69,13.16 2.35,10.92L7.23,8.83L14.67,16.27L12.58,21.15C10.34,20.81 7.94,19.58 5.93,17.57Z" />
+</vector>

app/src/main/res/drawable/ic_bug_report.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,8h-2.81c-0.45,-0.78 -1.07,-1.45 -1.82,-1.96L17,4.41 15.59,3l-2.17,2.17C12.96,5.06 12.49,5 12,5c-0.49,0 -0.96,0.06 -1.41,0.17L8.41,3 7,4.41l1.62,1.63C7.88,6.55 7.26,7.22 6.81,8L4,8v2h2.09c-0.05,0.33 -0.09,0.66 -0.09,1v1L4,12v2h2v1c0,0.34 0.04,0.67 0.09,1L4,16v2h2.81c1.04,1.79 2.97,3 5.19,3s4.15,-1.21 5.19,-3L20,18v-2h-2.09c0.05,-0.33 0.09,-0.66 0.09,-1v-1h2v-2h-2v-1c0,-0.34 -0.04,-0.67 -0.09,-1L20,10L20,8zM14,16h-4v-2h4v2zM14,12h-4v-2h4v2z"/>
+</vector>

app/src/main/res/drawable/ic_check_all.xml

@@ -0,0 +1,8 @@
+<!-- drawable/check_all.xml -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path android:fillColor="#000" android:pathData="M0.41,13.41L6,19L7.41,17.58L1.83,12M22.24,5.58L11.66,16.17L7.5,12L6.07,13.41L11.66,19L23.66,7M18,7L16.59,5.58L10.24,11.93L11.66,13.34L18,7Z" />
+</vector>

app/src/main/res/drawable/ic_emulate_conversations.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M20,2L4,2c-1.1,0 -1.99,0.9 -1.99,2L2,22l4,-4h14c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM8,14L6,14v-2h2v2zM8,11L6,11L6,9h2v2zM8,8L6,8L6,6h2v2zM15,14h-5v-2h5v2zM18,11h-8L10,9h8v2zM18,8h-8L10,6h8v2z"/>
+</vector>

app/src/main/res/drawable/ic_export.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M9,16h6v-6h4l-7,-7 -7,7h4zM5,18h14v2L5,20z"/>
+</vector>

app/src/main/res/drawable/ic_import.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M19,9h-4V3H9v6H5l7,7 7,-7zM5,18v2h14v-2H5z"/>
+</vector>

app/src/main/res/drawable/ic_info.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM13,17h-2v-6h2v6zM13,9h-2L11,7h2v2z"/>
+</vector>

app/src/main/res/drawable/ic_menu.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24">
+    <path
+        android:fillColor="#000"
+        android:pathData="M12,16A2,2 0 0,1 14,18A2,2 0 0,1 12,20A2,2 0 0,1 10,18A2,2 0 0,1 12,16M12,10A2,2 0 0,1 14,12A2,2 0 0,1 12,14A2,2 0 0,1 10,12A2,2 0 0,1 12,10M12,4A2,2 0 0,1 14,6A2,2 0 0,1 12,8A2,2 0 0,1 10,6A2,2 0 0,1 12,4Z" />
+</vector>

app/src/main/res/drawable/ic_network_wifi.xml

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12.01,21.49L23.64,7c-0.45,-0.34 -4.93,-4 -11.64,-4C5.28,3 0.81,6.66 0.36,7l11.63,14.49 0.01,0.01 0.01,-0.01z"
+        android:fillAlpha=".3"/>
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M3.53,10.95l8.46,10.54 0.01,0.01 0.01,-0.01 8.46,-10.54C20.04,10.62 16.81,8 12,8c-4.81,0 -8.04,2.62 -8.47,2.95z"/>
+</vector>

app/src/main/res/drawable/ic_notification_batch.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M15.9,18.45C17.25,18.45 18.35,17.35 18.35,16C18.35,14.65 17.25,13.55 15.9,13.55C14.54,13.55 13.45,14.65 13.45,16C13.45,17.35 14.54,18.45 15.9,18.45M21.1,16.68L22.58,17.84C22.71,17.95 22.75,18.13 22.66,18.29L21.26,20.71C21.17,20.86 21,20.92 20.83,20.86L19.09,20.16C18.73,20.44 18.33,20.67 17.91,20.85L17.64,22.7C17.62,22.87 17.47,23 17.3,23H14.5C14.32,23 14.18,22.87 14.15,22.7L13.89,20.85C13.46,20.67 13.07,20.44 12.71,20.16L10.96,20.86C10.81,20.92 10.62,20.86 10.54,20.71L9.14,18.29C9.05,18.13 9.09,17.95 9.22,17.84L10.7,16.68L10.65,16L10.7,15.31L9.22,14.16C9.09,14.05 9.05,13.86 9.14,13.71L10.54,11.29C10.62,11.13 10.81,11.07 10.96,11.13L12.71,11.84C13.07,11.56 13.46,11.32 13.89,11.15L14.15,9.29C14.18,9.13 14.32,9 14.5,9H17.3C17.47,9 17.62,9.13 17.64,9.29L17.91,11.15C18.33,11.32 18.73,11.56 19.09,11.84L20.83,11.13C21,11.07 21.17,11.13 21.26,11.29L22.66,13.71C22.75,13.86 22.71,14.05 22.58,14.16L21.1,15.31L21.15,16L21.1,16.68M6.69,8.07C7.56,8.07 8.26,7.37 8.26,6.5C8.26,5.63 7.56,4.92 6.69,4.92A1.58,1.58 0 0,0 5.11,6.5C5.11,7.37 5.82,8.07 6.69,8.07M10.03,6.94L11,7.68C11.07,7.75 11.09,7.87 11.03,7.97L10.13,9.53C10.08,9.63 9.96,9.67 9.86,9.63L8.74,9.18L8,9.62L7.81,10.81C7.79,10.92 7.7,11 7.59,11H5.79C5.67,11 5.58,10.92 5.56,10.81L5.4,9.62L4.64,9.18L3.5,9.63C3.41,9.67 3.3,9.63 3.24,9.53L2.34,7.97C2.28,7.87 2.31,7.75 2.39,7.68L3.34,6.94L3.31,6.5L3.34,6.06L2.39,5.32C2.31,5.25 2.28,5.13 2.34,5.03L3.24,3.47C3.3,3.37 3.41,3.33 3.5,3.37L4.63,3.82L5.4,3.38L5.56,2.19C5.58,2.08 5.67,2 5.79,2H7.59C7.7,2 7.79,2.08 7.81,2.19L8,3.38L8.74,3.82L9.86,3.37C9.96,3.33 10.08,3.37 10.13,3.47L11.03,5.03C11.09,5.13 11.07,5.25 11,5.32L10.03,6.06L10.06,6.5L10.03,6.94Z" />
+</vector>

app/src/main/res/drawable/ic_notification_full_node_connecting.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M19,18H6A4,4 0 0,1 2,14A4,4 0 0,1 6,10H6.71C7.37,7.69 9.5,6 12,6A5.5,5.5 0 0,1 17.5,11.5V12H19A3,3 0 0,1 22,15A3,3 0 0,1 19,18M19.35,10.03C18.67,6.59 15.64,4 12,4C9.11,4 6.6,5.64 5.35,8.03C2.34,8.36 0,10.9 0,14A6,6 0 0,0 6,20H19A5,5 0 0,0 24,15C24,12.36 21.95,10.22 19.35,10.03Z" />
+</vector>

app/src/main/res/drawable/ic_notification_full_node_disconnected.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M7.73,10L15.73,18H6A4,4 0 0,1 2,14A4,4 0 0,1 6,10M3,5.27L5.75,8C2.56,8.15 0,10.77 0,14A6,6 0 0,0 6,20H17.73L19.73,22L21,20.73L4.27,4M19.35,10.03C18.67,6.59 15.64,4 12,4C10.5,4 9.15,4.43 8,5.17L9.45,6.63C10.21,6.23 11.08,6 12,6A5.5,5.5 0 0,1 17.5,11.5V12H19A3,3 0 0,1 22,15C22,16.13 21.36,17.11 20.44,17.62L21.89,19.07C23.16,18.16 24,16.68 24,15C24,12.36 21.95,10.22 19.35,10.03Z" />
+</vector>

app/src/main/res/drawable/ic_port.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M7.77,6.76L6.23,5.48 0.82,12l5.41,6.52 1.54,-1.28L3.42,12l4.35,-5.24zM7,13h2v-2L7,11v2zM17,11h-2v2h2v-2zM11,13h2v-2h-2v2zM17.77,5.48l-1.54,1.28L20.58,12l-4.35,5.24 1.54,1.28L23.18,12l-5.41,-6.52z"/>
+</vector>

app/src/main/res/drawable/ic_separate_identities.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M16,11c1.66,0 2.99,-1.34 2.99,-3S17.66,5 16,5c-1.66,0 -3,1.34 -3,3s1.34,3 3,3zM8,11c1.66,0 2.99,-1.34 2.99,-3S9.66,5 8,5C6.34,5 5,6.34 5,8s1.34,3 3,3zM8,13c-2.33,0 -7,1.17 -7,3.5L1,19h14v-2.5c0,-2.33 -4.67,-3.5 -7,-3.5zM16,13c-0.29,0 -0.62,0.02 -0.97,0.05 1.16,0.84 1.97,1.97 1.97,3.45L17,19h6v-2.5c0,-2.33 -4.67,-3.5 -7,-3.5z"/>
+</vector>

app/src/main/res/drawable/ic_support_app.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M9,11.24L9,7.5C9,6.12 10.12,5 11.5,5S14,6.12 14,7.5v3.74c1.21,-0.81 2,-2.18 2,-3.74C16,5.01 13.99,3 11.5,3S7,5.01 7,7.5c0,1.56 0.79,2.93 2,3.74zM18.84,15.87l-4.54,-2.26c-0.17,-0.07 -0.35,-0.11 -0.54,-0.11L13,13.5v-6c0,-0.83 -0.67,-1.5 -1.5,-1.5S10,6.67 10,7.5v10.74l-3.43,-0.72c-0.08,-0.01 -0.15,-0.03 -0.24,-0.03 -0.31,0 -0.59,0.13 -0.79,0.33l-0.79,0.8 4.94,4.94c0.27,0.27 0.65,0.44 1.06,0.44h6.79c0.75,0 1.33,-0.55 1.44,-1.28l0.75,-5.27c0.01,-0.07 0.02,-0.14 0.02,-0.2 0,-0.62 -0.38,-1.16 -0.91,-1.38z"/>
+</vector>