Merge pull request #42 from RocketChat/fix_style_and_rules

Fix style and rules

app/build.gradle

@@ -5,52 +5,56 @@ apply plugin: 'com.jakewharton.hugo'
 apply from: '../config/quality/quality.gradle'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.0"
-    defaultConfig {
-        applicationId "chat.rocket.android"
-        minSdkVersion 17
-        targetSdkVersion 25
-        versionCode 1
-        versionName "1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-
-        vectorDrawables.useSupportLibrary = true
-    }
-    buildTypes {
-        release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
-        }
-    }
-    compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+  compileSdkVersion 25
+  buildToolsVersion "25.0.0"
+  defaultConfig {
+    applicationId "chat.rocket.android"
+    minSdkVersion 17
+    targetSdkVersion 25
+    versionCode 1
+    versionName "1.0"
+    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    vectorDrawables.useSupportLibrary = true
+  }
+  buildTypes {
+    release {
+      minifyEnabled false
+      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
     }
+  }
+  compileOptions {
+    sourceCompatibility JavaVersion.VERSION_1_8
+    targetCompatibility JavaVersion.VERSION_1_8
+  }
+  lintOptions {
+    //avoiding okio error: https://github.com/square/okhttp/issues/896
+    lintConfig file("lint.xml")
+  }
 }
 
 repositories {
-    mavenCentral()
-    maven { url 'https://github.com/YusukeIwaki/realm-java-helpers/raw/master/repo' }
-    maven { url 'https://github.com/uPhyca/stetho-realm/raw/master/maven-repo' }
-    maven { url 'https://github.com/RocketChat/Android-DDP/raw/master/repository' }
+  mavenCentral()
+  maven { url 'https://github.com/YusukeIwaki/realm-java-helpers/raw/master/repo' }
+  maven { url 'https://github.com/uPhyca/stetho-realm/raw/master/maven-repo' }
+  maven { url 'https://github.com/RocketChat/Android-DDP/raw/master/repository' }
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:25.0.0'
-    compile 'com.android.support:design:25.0.0'
-    compile 'jp.co.crowdworks:realm-java-helpers:0.0.7'
-    compile 'jp.co.crowdworks:realm-java-helpers-bolts:0.0.7'
+  compile fileTree(dir: 'libs', include: ['*.jar'])
+  compile 'com.android.support:appcompat-v7:25.0.0'
+  compile 'com.android.support:design:25.0.0'
+  compile 'jp.co.crowdworks:realm-java-helpers:0.0.7'
+  compile 'jp.co.crowdworks:realm-java-helpers-bolts:0.0.7'
 
-    compile 'com.squareup.okhttp3:okhttp:3.4.1'
+  compile 'com.squareup.okhttp3:okhttp:3.4.1'
 
-    compile 'com.facebook.stetho:stetho:1.4.1'
-    compile 'com.facebook.stetho:stetho-okhttp3:1.4.1'
-    compile 'com.uphyca:stetho_realm:2.0.0'
+  compile 'com.facebook.stetho:stetho:1.4.1'
+  compile 'com.facebook.stetho:stetho-okhttp3:1.4.1'
+  compile 'com.uphyca:stetho_realm:2.0.0'
 
-    compile 'chat.rocket:android-ddp:0.0.5'
+  compile 'chat.rocket:android-ddp:0.0.5'
 
-    compile 'com.jakewharton.timber:timber:4.3.1'
-    compile 'com.jakewharton.rxbinding:rxbinding:0.4.0'
+  compile 'com.jakewharton.timber:timber:4.3.1'
+  compile 'com.jakewharton.rxbinding:rxbinding:0.4.0'
 }

app/lint.xml

+<lint>
+  <issue id="InvalidPackage">
+    <ignore regexp="okio.*jar"/>
+  </issue>
+</lint>
\ No newline at end of file

app/src/main/AndroidManifest.xml

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="chat.rocket.android">
 
-    <uses-permission android:name="android.permission.INTERNET"/>
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+  <uses-permission android:name="android.permission.INTERNET"/>
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 
-    <application
-        android:allowBackup="true"
-        android:icon="@mipmap/ic_launcher"
-        android:label="@string/app_name"
-        android:supportsRtl="true"
-        android:theme="@style/AppTheme"
-        android:name=".RocketChatApplication">
+  <application
+      android:name=".RocketChatApplication"
+      android:allowBackup="true"
+      android:icon="@mipmap/ic_launcher"
+      android:label="@string/app_name"
+      android:supportsRtl="true"
+      android:theme="@style/AppTheme">
 
-        <activity android:name=".activity.MainActivity"
-            android:windowSoftInputMode="adjustResize">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN"/>
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.LAUNCHER"/>
-            </intent-filter>
-        </activity>
+    <activity
+        android:name=".activity.MainActivity"
+        android:windowSoftInputMode="adjustResize">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
 
-        <activity android:name=".activity.ServerConfigActivity"
-            android:windowSoftInputMode="adjustResize"/>
+        <category android:name="android.intent.category.DEFAULT"/>
+        <category android:name="android.intent.category.LAUNCHER"/>
+      </intent-filter>
+    </activity>
 
-        <service android:name=".service.RocketChatService"/>
-    </application>
+    <activity
+        android:name=".activity.ServerConfigActivity"
+        android:windowSoftInputMode="adjustResize"/>
+
+    <service android:name=".service.RocketChatService"/>
+  </application>
 
 </manifest>

app/src/main/java/chat/rocket/android/LaunchUtil.java

@@ -2,14 +2,19 @@ package chat.rocket.android;
 
 import android.content.Context;
 import android.content.Intent;
-
 import chat.rocket.android.activity.ServerConfigActivity;
 
+/**
+ * utility class for launching Activity.
+ */
 public class LaunchUtil {
-    public static void showServerConfigActivity(Context context, String id) {
-        Intent intent = new Intent(context, ServerConfigActivity.class);
-        intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_CLEAR_TOP);
-        intent.putExtra("id", id);
-        context.startActivity(intent);
-    }
+  /**
+   * launch ServerConfigActivity with proper flags.
+   */
+  public static void showServerConfigActivity(Context context, String serverCondigId) {
+    Intent intent = new Intent(context, ServerConfigActivity.class);
+    intent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT | Intent.FLAG_ACTIVITY_CLEAR_TOP);
+    intent.putExtra("id", serverCondigId);
+    context.startActivity(intent);
+  }
 }

app/src/main/java/chat/rocket/android/RocketChatApplication.java

 package chat.rocket.android;
 
 import android.app.Application;
-
 import com.facebook.stetho.Stetho;
 import com.uphyca.stetho_realm.RealmInspectorModulesProvider;
-
 import io.realm.Realm;
 import io.realm.RealmConfiguration;
 import timber.log.Timber;
 
+/**
+ * Customized Application-class for Rocket.Chat
+ */
 public class RocketChatApplication extends Application {
-    @Override
-    public void onCreate() {
-        super.onCreate();
+  @Override public void onCreate() {
+    super.onCreate();
 
-        Timber.plant(new Timber.DebugTree());
+    Timber.plant(new Timber.DebugTree());
 
-        Realm.init(this);
-        Realm.setDefaultConfiguration(new RealmConfiguration.Builder()
-                .deleteRealmIfMigrationNeeded()
-                .build());
+    Realm.init(this);
+    Realm.setDefaultConfiguration(
+        new RealmConfiguration.Builder().deleteRealmIfMigrationNeeded().build());
 
-        Stetho.initialize(
-                Stetho.newInitializerBuilder(this)
-                        .enableDumpapp(Stetho.defaultDumperPluginsProvider(this))
-                        .enableWebKitInspector(RealmInspectorModulesProvider.builder(this).build())
-                        .build());
+    Stetho.initialize(Stetho.newInitializerBuilder(this)
+        .enableDumpapp(Stetho.defaultDumperPluginsProvider(this))
+        .enableWebKitInspector(RealmInspectorModulesProvider.builder(this).build())
+        .build());
 
-        //TODO: add periodic trigger for RocketChatService.keepalive(this) here!
-    }
+    //TODO: add periodic trigger for RocketChatService.keepalive(this) here!
+  }
 }

app/src/main/java/chat/rocket/android/activity/AbstractAuthedActivity.java

 package chat.rocket.android.activity;
 
 import android.support.v7.app.AppCompatActivity;
-
-import java.util.List;
-import java.util.UUID;
-
 import chat.rocket.android.helper.LogcatIfError;
 import chat.rocket.android.model.ServerConfig;
 import chat.rocket.android.service.RocketChatService;
 import io.realm.Realm;
 import io.realm.RealmResults;
+import java.util.List;
+import java.util.UUID;
 import jp.co.crowdworks.realm_java_helpers.RealmListObserver;
 import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
 
 abstract class AbstractAuthedActivity extends AppCompatActivity {
-
-    private RealmListObserver<ServerConfig> mInsertEmptyRecordIfNoConfigurationExists = new RealmListObserver<ServerConfig>() {
-        @Override
-        protected RealmResults<ServerConfig> queryItems(Realm realm) {
-            return realm.where(ServerConfig.class).findAll();
+  private RealmListObserver<ServerConfig> serverConfigEmptinessObserver =
+      new RealmListObserver<ServerConfig>() {
+        @Override protected RealmResults<ServerConfig> queryItems(Realm realm) {
+          return realm.where(ServerConfig.class).findAll();
         }
 
-        @Override
-        protected void onCollectionChanged(List<ServerConfig> list) {
-            if (list.isEmpty()) {
-                final String newId = UUID.randomUUID().toString();
-                RealmHelperBolts
-                        .executeTransaction(realm -> realm.createObject(ServerConfig.class, newId))
-                        .continueWith(new LogcatIfError());
-            }
+        @Override protected void onCollectionChanged(List<ServerConfig> list) {
+          if (list.isEmpty()) {
+            final String newId = UUID.randomUUID().toString();
+            RealmHelperBolts.executeTransaction(
+                realm -> realm.createObject(ServerConfig.class, newId))
+                .continueWith(new LogcatIfError());
+          }
         }
-    };
-
-    private RealmListObserver<ServerConfig> mShowConfigActivityIfNeeded = new RealmListObserver<ServerConfig>() {
+      };
 
-        @Override
-        protected RealmResults<ServerConfig> queryItems(Realm realm) {
-            return ServerConfig.queryLoginRequiredConnections(realm).findAll();
+  private RealmListObserver<ServerConfig> loginRequiredServerConfigObserver =
+      new RealmListObserver<ServerConfig>() {
+        @Override protected RealmResults<ServerConfig> queryItems(Realm realm) {
+          return ServerConfig.queryLoginRequiredConnections(realm).findAll();
         }
 
-        @Override
-        protected void onCollectionChanged(List<ServerConfig> list) {
-            ServerConfigActivity.launchFor(AbstractAuthedActivity.this, list);
+        @Override protected void onCollectionChanged(List<ServerConfig> list) {
+          ServerConfigActivity.launchFor(AbstractAuthedActivity.this, list);
         }
-    };
-
-    @Override
-    protected void onResume() {
-        super.onResume();
-        RocketChatService.keepalive(this);
-        mInsertEmptyRecordIfNoConfigurationExists.sub();
-        mShowConfigActivityIfNeeded.sub();
-    }
-
-    @Override
-    protected void onPause() {
-        mShowConfigActivityIfNeeded.unsub();
-        mInsertEmptyRecordIfNoConfigurationExists.unsub();
-        super.onPause();
-    }
+      };
+
+  @Override protected void onResume() {
+    super.onResume();
+    RocketChatService.keepalive(this);
+    serverConfigEmptinessObserver.sub();
+    loginRequiredServerConfigObserver.sub();
+  }
+
+  @Override protected void onPause() {
+    loginRequiredServerConfigObserver.unsub();
+    serverConfigEmptinessObserver.unsub();
+    super.onPause();
+  }
 }

app/src/main/java/chat/rocket/android/activity/AbstractFragmentActivity.java

@@ -3,33 +3,34 @@ package chat.rocket.android.activity;
 import android.support.annotation.IdRes;
 import android.support.v4.app.Fragment;
 import android.support.v7.app.AppCompatActivity;
-
 import chat.rocket.android.helper.OnBackPressListener;
 
 abstract class AbstractFragmentActivity extends AppCompatActivity {
 
-    protected abstract @IdRes int getLayoutContainerForFragment();
+  protected abstract @IdRes int getLayoutContainerForFragment();
 
-    @Override
-    public void onBackPressed(){
-        Fragment f = getSupportFragmentManager().findFragmentById(getLayoutContainerForFragment());
-        if(f instanceof OnBackPressListener &&
-                ((OnBackPressListener) f).onBackPressed()){
-            //consumed. do nothing.
-        }
-        else super.onBackPressed();
-    }
+  @Override public void onBackPressed() {
+    Fragment fragment =
+        getSupportFragmentManager().findFragmentById(getLayoutContainerForFragment());
 
-    protected void showFragment(Fragment f) {
-        getSupportFragmentManager().beginTransaction()
-                .replace(getLayoutContainerForFragment(), f)
-                .commit();
+    if (fragment instanceof OnBackPressListener
+        && ((OnBackPressListener) fragment).onBackPressed()) {
+      //consumed. do nothing.
+    } else {
+      super.onBackPressed();
     }
+  }
 
-    protected void showFragmentWithBackStack(Fragment f) {
-        getSupportFragmentManager().beginTransaction()
-                .replace(getLayoutContainerForFragment(), f)
-                .addToBackStack(null)
-                .commit();
-    }
+  protected void showFragment(Fragment fragment) {
+    getSupportFragmentManager().beginTransaction()
+        .replace(getLayoutContainerForFragment(), fragment)
+        .commit();
+  }
+
+  protected void showFragmentWithBackStack(Fragment fragment) {
+    getSupportFragmentManager().beginTransaction()
+        .replace(getLayoutContainerForFragment(), fragment)
+        .addToBackStack(null)
+        .commit();
+  }
 }

app/src/main/java/chat/rocket/android/activity/MainActivity.java

@@ -2,25 +2,26 @@ package chat.rocket.android.activity;
 
 import android.os.Bundle;
 import android.support.annotation.Nullable;
-
 import chat.rocket.android.R;
 import chat.rocket.android.helper.LogcatIfError;
 import chat.rocket.android.model.ServerConfig;
 import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
 
+/**
+ * Entry-point for Rocket.Chat.Android application.
+ */
 public class MainActivity extends AbstractAuthedActivity {
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
+  @Override protected void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    setContentView(R.layout.activity_main);
 
-        if (savedInstanceState==null) {
-            RealmHelperBolts.executeTransaction(realm -> {
-                for(ServerConfig config: ServerConfig.queryActiveConnections(realm).findAll()) {
-                    config.setTokenVerified(false);
-                }
-                return null;
-            }).continueWith(new LogcatIfError());
+    if (savedInstanceState == null) {
+      RealmHelperBolts.executeTransaction(realm -> {
+        for (ServerConfig config : ServerConfig.queryActiveConnections(realm).findAll()) {
+          config.setTokenVerified(false);
         }
+        return null;
+      }).continueWith(new LogcatIfError());
     }
+  }
 }

app/src/main/java/chat/rocket/android/activity/ServerConfigActivity.java

@@ -5,181 +5,176 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
-
-import java.util.List;
-
 import chat.rocket.android.LaunchUtil;
 import chat.rocket.android.R;
 import chat.rocket.android.fragment.server_config.ConnectingToHostFragment;
 import chat.rocket.android.fragment.server_config.InputHostnameFragment;
 import chat.rocket.android.helper.TextUtils;
-import chat.rocket.android.model.ServerAuthProvider;
+import chat.rocket.android.model.MeteorLoginServiceConfiguration;
 import chat.rocket.android.model.ServerConfig;
 import chat.rocket.android.service.RocketChatService;
 import io.realm.Realm;
 import io.realm.RealmList;
 import io.realm.RealmQuery;
+import java.util.List;
 import jp.co.crowdworks.realm_java_helpers.RealmObjectObserver;
 
+/**
+ * Activity for Login, Sign-up, and Connecting...
+ */
 public class ServerConfigActivity extends AbstractFragmentActivity {
 
-    @Override
-    protected int getLayoutContainerForFragment() {
-        return R.id.content;
-    }
-
-    private String mServerConfigId;
-    private RealmObjectObserver<ServerConfig> mServerConfigObserver = new RealmObjectObserver<ServerConfig>() {
-        @Override
-        protected RealmQuery<ServerConfig> query(Realm realm) {
-            return realm.where(ServerConfig.class).equalTo("id", mServerConfigId);
-        }
-
-        @Override
-        protected void onChange(ServerConfig config) {
-            onRenderServerConfig(config);
-        }
-    };
-
-    public static boolean launchFor(Context context, List<ServerConfig> configList) {
-        for (ServerConfig config: configList) {
-            if (TextUtils.isEmpty(config.getHostname())) {
-                return launchFor(context, config);
-            }
-            else if (!TextUtils.isEmpty(config.getConnectionError())) {
-                return launchFor(context, config);
-            }
+  private String serverConfigId;
+  private RealmObjectObserver<ServerConfig> serverConfigObserver =
+      new RealmObjectObserver<ServerConfig>() {
+        @Override protected RealmQuery<ServerConfig> query(Realm realm) {
+          return realm.where(ServerConfig.class).equalTo("id", serverConfigId);
         }
 
-        for (ServerConfig config: configList) {
-            if (config.getProviders().isEmpty()) {
-                return launchFor(context, config);
-            }
+        @Override protected void onChange(ServerConfig config) {
+          onRenderServerConfig(config);
         }
+      };
 
-        for (ServerConfig config: configList) {
-            if (TextUtils.isEmpty(config.getSelectedProviderName())) {
-                return launchFor(context, config);
-            }
-        }
+  /**
+   * Start the ServerConfigActivity with considering the priority of ServerConfig in the list.
+   */
+  public static boolean launchFor(Context context, List<ServerConfig> configList) {
+    for (ServerConfig config : configList) {
+      if (TextUtils.isEmpty(config.getHostname())) {
+        return launchFor(context, config);
+      } else if (!TextUtils.isEmpty(config.getConnectionError())) {
+        return launchFor(context, config);
+      }
+    }
 
-        for (ServerConfig config: configList) {
-            if (TextUtils.isEmpty(config.getToken())) {
-                return launchFor(context, config);
-            }
-        }
+    for (ServerConfig config : configList) {
+      if (config.getAuthProviders().isEmpty()) {
+        return launchFor(context, config);
+      }
+    }
 
-        for (ServerConfig config: configList) {
-            if (!config.isTokenVerified()) {
-                return launchFor(context, config);
-            }
-        }
+    for (ServerConfig config : configList) {
+      if (TextUtils.isEmpty(config.getSelectedProviderName())) {
+        return launchFor(context, config);
+      }
+    }
 
-        return false;
+    for (ServerConfig config : configList) {
+      if (TextUtils.isEmpty(config.getToken())) {
+        return launchFor(context, config);
+      }
     }
 
-    private static boolean launchFor(Context context, ServerConfig config) {
-        LaunchUtil.showServerConfigActivity(context, config.getId());
-        return true;
+    for (ServerConfig config : configList) {
+      if (!config.isTokenVerified()) {
+        return launchFor(context, config);
+      }
     }
 
+    return false;
+  }
 
-    @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
+  private static boolean launchFor(Context context, ServerConfig config) {
+    LaunchUtil.showServerConfigActivity(context, config.getId());
+    return true;
+  }
 
-        Intent intent = getIntent();
-        if (intent==null || intent.getExtras()==null) {
-            finish();
-            return;
-        }
+  @Override protected int getLayoutContainerForFragment() {
+    return R.id.content;
+  }
 
-        mServerConfigId = intent.getStringExtra("id");
-        if (TextUtils.isEmpty(mServerConfigId)) {
-            finish();
-            return;
-        }
+  @Override protected void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
 
-        setContentView(R.layout.simple_screen);
+    Intent intent = getIntent();
+    if (intent == null || intent.getExtras() == null) {
+      finish();
+      return;
     }
 
-    @Override
-    protected void onResume() {
-        super.onResume();
-        RocketChatService.keepalive(this);
-        mServerConfigObserver.sub();
+    serverConfigId = intent.getStringExtra("id");
+    if (TextUtils.isEmpty(serverConfigId)) {
+      finish();
+      return;
     }
 
-    @Override
-    protected void onPause() {
-        mServerConfigObserver.unsub();
-        super.onPause();
-    }
+    setContentView(R.layout.simple_screen);
+  }
 
-    private void onRenderServerConfig(ServerConfig config) {
-        if (config==null) {
-            finish();
-            return;
-        }
+  @Override protected void onResume() {
+    super.onResume();
+    RocketChatService.keepalive(this);
+    serverConfigObserver.sub();
+  }
 
-        if (config.isTokenVerified()) {
-            finish();
-            return;
-        }
+  @Override protected void onPause() {
+    serverConfigObserver.unsub();
+    super.onPause();
+  }
 
-        final String token = config.getToken();
-        if (!TextUtils.isEmpty(token)) {
-            return;
-        }
+  private void onRenderServerConfig(ServerConfig config) {
+    if (config == null) {
+      finish();
+      return;
+    }
 
-        final String selectedProviderName = config.getSelectedProviderName();
-        if (!TextUtils.isEmpty(selectedProviderName)) {
+    if (config.isTokenVerified()) {
+      finish();
+      return;
+    }
 
-            return;
-        }
+    final String token = config.getToken();
+    if (!TextUtils.isEmpty(token)) {
+      return;
+    }
 
-        RealmList<ServerAuthProvider> providers = config.getProviders();
-        if (!providers.isEmpty()) {
+    final String selectedProviderName = config.getSelectedProviderName();
+    if (!TextUtils.isEmpty(selectedProviderName)) {
 
-            return;
-        }
+      return;
+    }
 
-        final String error = config.getConnectionError();
-        String hostname = config.getHostname();
-        if (!TextUtils.isEmpty(hostname) && TextUtils.isEmpty(error)) {
-            showFragment(new ConnectingToHostFragment());
-            return;
-        }
+    RealmList<MeteorLoginServiceConfiguration> providers = config.getAuthProviders();
+    if (!providers.isEmpty()) {
 
-        showFragment(new InputHostnameFragment());
+      return;
     }
 
-    @Override
-    protected void showFragment(Fragment f) {
-        injectIdArgTo(f);
-        super.showFragment(f);
+    final String error = config.getConnectionError();
+    String hostname = config.getHostname();
+    if (!TextUtils.isEmpty(hostname) && TextUtils.isEmpty(error)) {
+      showFragment(new ConnectingToHostFragment());
+      return;
     }
 
-    @Override
-    protected void showFragmentWithBackStack(Fragment f) {
-        injectIdArgTo(f);
-        super.showFragmentWithBackStack(f);
-    }
+    showFragment(new InputHostnameFragment());
+  }
 
-    private void injectIdArgTo(Fragment f) {
-        Bundle args = f.getArguments();
-        if(args==null) args = new Bundle();
-        args.putString("id", mServerConfigId);
-        f.setArguments(args);
-    }
+  @Override protected void showFragment(Fragment fragment) {
+    injectServerConfigIdArgTo(fragment);
+    super.showFragment(fragment);
+  }
 
-    @Override
-    public void onBackPressed() {
-        if (ServerConfig.hasActiveConnection()) {
-            super.onBackPressed();
-        }
-        else {
-            moveTaskToBack(true);
-        }
+  @Override protected void showFragmentWithBackStack(Fragment fragment) {
+    injectServerConfigIdArgTo(fragment);
+    super.showFragmentWithBackStack(fragment);
+  }
+
+  private void injectServerConfigIdArgTo(Fragment fragment) {
+    Bundle args = fragment.getArguments();
+    if (args == null) {
+      args = new Bundle();
+    }
+    args.putString("id", serverConfigId);
+    fragment.setArguments(args);
+  }
+
+  @Override public void onBackPressed() {
+    if (ServerConfig.hasActiveConnection()) {
+      super.onBackPressed();
+    } else {
+      moveTaskToBack(true);
     }
+  }
 }

app/src/main/java/chat/rocket/android/fragment/AbstractFragment.java

@@ -8,24 +8,30 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+/**
+ * Fragment base class for this Application.
+ */
 public abstract class AbstractFragment extends Fragment {
-    protected View mRootView;
-    protected abstract @LayoutRes int getLayout();
-    protected abstract void onSetupView();
+  protected View rootView;
 
-    @Nullable
-    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        mRootView = inflater.inflate(getLayout(), container,false);
-        onSetupView();
-        return mRootView;
-    }
+  protected abstract @LayoutRes int getLayout();
+
+  protected abstract void onSetupView();
+
+  @Nullable
+  @Override
+  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
+      @Nullable Bundle savedInstanceState) {
+    rootView = inflater.inflate(getLayout(), container, false);
+    onSetupView();
+    return rootView;
+  }
 
-    protected void finish() {
-        if(getFragmentManager().getBackStackEntryCount()==0){
-            getActivity().finish();
-        }
-        else {
-            getFragmentManager().popBackStack();
-        }
+  protected void finish() {
+    if (getFragmentManager().getBackStackEntryCount() == 0) {
+      getActivity().finish();
+    } else {
+      getFragmentManager().popBackStack();
     }
+  }
 }

app/src/main/java/chat/rocket/android/fragment/server_config/AbstractServerConfigFragment.java

@@ -2,26 +2,25 @@ package chat.rocket.android.fragment.server_config;
 
 import android.os.Bundle;
 import android.support.annotation.Nullable;
-
 import chat.rocket.android.fragment.AbstractFragment;
 import chat.rocket.android.helper.TextUtils;
 
 abstract class AbstractServerConfigFragment extends AbstractFragment {
-    protected String mServerConfigId;
-    @Override
-    public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
+  protected String serverConfigId;
+
+  @Override public void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
 
-        Bundle args = getArguments();
-        if (args==null) {
-            finish();
-            return;
-        }
+    Bundle args = getArguments();
+    if (args == null) {
+      finish();
+      return;
+    }
 
-        mServerConfigId = args.getString("id");
-        if (TextUtils.isEmpty(mServerConfigId)) {
-            finish();
-            return;
-        }
+    serverConfigId = args.getString("id");
+    if (TextUtils.isEmpty(serverConfigId)) {
+      finish();
+      return;
     }
+  }
 }

app/src/main/java/chat/rocket/android/fragment/server_config/ConnectingToHostFragment.java

@@ -2,14 +2,15 @@ package chat.rocket.android.fragment.server_config;
 
 import chat.rocket.android.R;
 
+/**
+ * Just showing "connecting..." screen.
+ */
 public class ConnectingToHostFragment extends AbstractServerConfigFragment {
-    @Override
-    protected int getLayout() {
-        return R.layout.fragment_wait_for_connection;
-    }
+  @Override protected int getLayout() {
+    return R.layout.fragment_wait_for_connection;
+  }
 
-    @Override
-    protected void onSetupView() {
+  @Override protected void onSetupView() {
 
-    }
+  }
 }

app/src/main/java/chat/rocket/android/fragment/server_config/InputHostnameFragment.java

@@ -2,12 +2,8 @@ package chat.rocket.android.fragment.server_config;
 
 import android.os.Handler;
 import android.os.Message;
-import android.view.View;
 import android.widget.TextView;
 import android.widget.Toast;
-
-import org.json.JSONObject;
-
 import chat.rocket.android.R;
 import chat.rocket.android.helper.LogcatIfError;
 import chat.rocket.android.helper.TextUtils;
@@ -16,85 +12,86 @@ import io.realm.Realm;
 import io.realm.RealmQuery;
 import jp.co.crowdworks.realm_java_helpers.RealmObjectObserver;
 import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
+import org.json.JSONObject;
 
+/**
+ * Input server host.
+ */
 public class InputHostnameFragment extends AbstractServerConfigFragment {
-    public InputHostnameFragment(){}
-
-    @Override
-    protected int getLayout() {
-        return R.layout.fragment_input_hostname;
+  private Handler errorShowingHandler = new Handler() {
+    @Override public void handleMessage(Message msg) {
+      Toast.makeText(rootView.getContext(), (String) msg.obj, Toast.LENGTH_SHORT).show();
     }
-
-    RealmObjectObserver<ServerConfig> mObserver = new RealmObjectObserver<ServerConfig>() {
-        @Override
-        protected RealmQuery<ServerConfig> query(Realm realm) {
-            return realm.where(ServerConfig.class).equalTo("id", mServerConfigId);
-        }
-
-        @Override
-        protected void onChange(ServerConfig config) {
-            onRenderServerConfig(config);
-        }
-    };
-
-    @Override
-    protected void onSetupView() {
-        final TextView editor = (TextView) mRootView.findViewById(R.id.editor_hostname);
-        final View btnConnect = mRootView.findViewById(R.id.btn_connect);
-
-        btnConnect.setOnClickListener(v -> {
-            final String hostname = TextUtils.or(TextUtils.or(editor.getText(), editor.getHint()), "").toString();
-            RealmHelperBolts
-                    .executeTransaction(realm -> realm.createOrUpdateObjectFromJson(ServerConfig.class, new JSONObject()
-                            .put("id", mServerConfigId)
-                            .put("hostname", hostname)
-                            .put("connectionError", JSONObject.NULL)))
-                    .continueWith(new LogcatIfError());
-        });
-
-        mObserver.sub();
+  };
+  RealmObjectObserver<ServerConfig> serverConfigObserver = new RealmObjectObserver<ServerConfig>() {
+    @Override protected RealmQuery<ServerConfig> query(Realm realm) {
+      return realm.where(ServerConfig.class).equalTo("id", serverConfigId);
     }
 
-    @Override
-    public void onResume() {
-        super.onResume();
-        mObserver.keepalive();
+    @Override protected void onChange(ServerConfig config) {
+      onRenderServerConfig(config);
     }
+  };
 
-    @Override
-    public void onDestroyView() {
-        mObserver.unsub();
-        super.onDestroyView();
-    }
+  public InputHostnameFragment() {
+  }
 
-    private Handler mShowError = new Handler() {
-        @Override
-        public void handleMessage(Message msg) {
-            Toast.makeText(mRootView.getContext(), (String) msg.obj, Toast.LENGTH_SHORT).show();
-        }
-    };
-
-    private void showError(String errString) {
-        mShowError.removeMessages(0);
-        Message m = Message.obtain(mShowError, 0, errString);
-        mShowError.sendMessageDelayed(m, 160);
-    }
+  @Override protected int getLayout() {
+    return R.layout.fragment_input_hostname;
+  }
 
-    private void onRenderServerConfig(ServerConfig config) {
-        final TextView editor = (TextView) mRootView.findViewById(R.id.editor_hostname);
-        if (!TextUtils.isEmpty(config.getHostname())) editor.setText(config.getHostname());
-        if (!TextUtils.isEmpty(config.getConnectionError())) {
-            clearConnectionErrorAndHostname();
-            showError(config.getConnectionError());
-        }
-    }
+  @Override protected void onSetupView() {
+    rootView.findViewById(R.id.btn_connect).setOnClickListener(view -> handleConnect());
 
-    private void clearConnectionErrorAndHostname() {
-        RealmHelperBolts
-                .executeTransaction(realm -> realm.createOrUpdateObjectFromJson(ServerConfig.class, new JSONObject()
-                        .put("id", mServerConfigId)
-                        .put("hostname", JSONObject.NULL)
-                        .put("connectionError", JSONObject.NULL)))
-                .continueWith(new LogcatIfError());
+    serverConfigObserver.sub();
+  }
+
+  private void handleConnect() {
+    final TextView editor = (TextView) rootView.findViewById(R.id.editor_hostname);
+
+    final String hostname =
+        TextUtils.or(TextUtils.or(editor.getText(), editor.getHint()), "").toString();
+
+    RealmHelperBolts.executeTransaction(
+        realm -> realm.createOrUpdateObjectFromJson(ServerConfig.class,
+            new JSONObject().put("id", serverConfigId)
+                .put("hostname", hostname)
+                .put("connectionError", JSONObject.NULL))).continueWith(new LogcatIfError());
+  }
+
+  @Override public void onResume() {
+    super.onResume();
+    serverConfigObserver.keepalive();
+  }
+
+  @Override public void onDestroyView() {
+    serverConfigObserver.unsub();
+    super.onDestroyView();
+  }
+
+  private void showError(String errString) {
+    errorShowingHandler.removeMessages(0);
+    Message msg = Message.obtain(errorShowingHandler, 0, errString);
+    errorShowingHandler.sendMessageDelayed(msg, 160);
+  }
+
+  private void onRenderServerConfig(ServerConfig config) {
+    final TextView editor = (TextView) rootView.findViewById(R.id.editor_hostname);
+
+    if (!TextUtils.isEmpty(config.getHostname())) {
+      editor.setText(config.getHostname());
+    }
+    if (!TextUtils.isEmpty(config.getConnectionError())) {
+      clearConnectionErrorAndHostname();
+      showError(config.getConnectionError());
     }
+  }
+
+  private void clearConnectionErrorAndHostname() {
+    RealmHelperBolts.executeTransaction(
+        realm -> realm.createOrUpdateObjectFromJson(ServerConfig.class,
+            new JSONObject().put("id", serverConfigId)
+                .put("hostname", JSONObject.NULL)
+                .put("connectionError", JSONObject.NULL))).continueWith(new LogcatIfError());
+  }
 }

app/src/main/java/chat/rocket/android/helper/LogcatIfError.java

@@ -4,12 +4,14 @@ import bolts.Continuation;
 import bolts.Task;
 import timber.log.Timber;
 
+/**
+ * Bolts-Task continuation for just logging if error occurred.
+ */
 public class LogcatIfError implements Continuation {
-    @Override
-    public Object then(Task task) throws Exception {
-        if (task.isFaulted()) {
-            Timber.w(task.getError());
-        }
-        return task;
+  @Override public Object then(Task task) throws Exception {
+    if (task.isFaulted()) {
+      Timber.w(task.getError());
     }
+    return task;
+  }
 }

app/src/main/java/chat/rocket/android/helper/OkHttpHelper.java

 package chat.rocket.android.helper;
 
-
 import com.facebook.stetho.okhttp3.StethoInterceptor;
-
 import java.util.concurrent.TimeUnit;
-
 import okhttp3.OkHttpClient;
 
+/**
+ * Helper class for OkHttp client.
+ */
 public class OkHttpHelper {
-    private static OkHttpClient sHttpClientForWS;
-    public static OkHttpClient getClientForWebSocket() {
+  private static OkHttpClient sHttpClientForWS;
 
-        if (sHttpClientForWS==null) {
-            sHttpClientForWS = new OkHttpClient.Builder()
-                    .readTimeout(0, TimeUnit.NANOSECONDS)
-                    .addNetworkInterceptor(new StethoInterceptor())
-                    .build();
-        }
-        return sHttpClientForWS;
+  /**
+   * acquire OkHttpClient instance for WebSocket connection.
+   */
+  public static OkHttpClient getClientForWebSocket() {
+    if (sHttpClientForWS == null) {
+      sHttpClientForWS = new OkHttpClient.Builder().readTimeout(0, TimeUnit.NANOSECONDS)
+          .addNetworkInterceptor(new StethoInterceptor())
+          .build();
     }
+    return sHttpClientForWS;
+  }
 }

app/src/main/java/chat/rocket/android/helper/OnBackPressListener.java

 package chat.rocket.android.helper;
 
+/**
+ * Interface that just have onBackPressed().
+ */
 public interface OnBackPressListener {
-    boolean onBackPressed();
+
+  /**
+   * onBackPressed
+   *
+   * @return whether back is handled or not.
+   */
+  boolean onBackPressed();
 }

app/src/main/java/chat/rocket/android/helper/TextUtils.java

 package chat.rocket.android.helper;
 
+/**
+ * Text Utility class like android.text.TextUtils.
+ */
 public class TextUtils {
-    public static boolean isEmpty(CharSequence str) {
-        // same definition as android.text.TextUtils#isEmpty().
-        return str == null || str.length() == 0;
-    }
 
-    public static CharSequence or(CharSequence str, CharSequence defaultValue) {
-        if (isEmpty(str)) return defaultValue;
-        return str;
+  /**
+   * Returns true if the string is null or 0-length.
+   *
+   * @param str the string to be examined
+   * @return true if str is null or zero length
+   */
+  public static boolean isEmpty(CharSequence str) {
+    // same definition as android.text.TextUtils#isEmpty().
+    return str == null || str.length() == 0;
+  }
+
+  /**
+   * Returns str if it is not empty; otherwise defaultValue is returned.
+   */
+  @SuppressWarnings("PMD.ShortMethodName")
+  public static CharSequence or(CharSequence str,
+      CharSequence defaultValue) {
+    if (isEmpty(str)) {
+      return defaultValue;
     }
+    return str;
+  }
 }

app/src/main/java/chat/rocket/android/model/MeteorLoginServiceConfiguration.java

+package chat.rocket.android.model;
+
+import io.realm.RealmObject;
+import io.realm.annotations.PrimaryKey;
+
+/**
+ * subscription model for "meteor_accounts_loginServiceConfiguration".
+ */
+@SuppressWarnings("PMD.ShortVariable")
+public class MeteorLoginServiceConfiguration
+    extends RealmObject {
+  @PrimaryKey private String id;
+  private String service;
+  private String consumerKey; //for Twitter
+  private String appId; //for Facebook
+  private String clientId; //for other auth providers
+}

app/src/main/java/chat/rocket/android/model/ServerAuthProvider.java

-package chat.rocket.android.model;
-
-import io.realm.RealmObject;
-import io.realm.annotations.PrimaryKey;
-
-public class ServerAuthProvider extends RealmObject {
-    @PrimaryKey
-    private String name; //email, twitter, github, ...
-}

app/src/main/java/chat/rocket/android/model/ServerConfig.java

 package chat.rocket.android.model;
 
-import org.json.JSONObject;
-
 import chat.rocket.android.helper.LogcatIfError;
 import hugo.weaving.DebugLog;
 import io.realm.Realm;
@@ -11,96 +9,96 @@ import io.realm.RealmQuery;
 import io.realm.annotations.PrimaryKey;
 import jp.co.crowdworks.realm_java_helpers.RealmHelper;
 import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
+import org.json.JSONObject;
 
+/**
+ * Server configuration.
+ */
+@SuppressWarnings("PMD.ShortVariable")
 public class ServerConfig extends RealmObject {
-    @PrimaryKey
-    private String id;
-    private String hostname;
-    private String connectionError;
-    private String token;
-    private boolean tokenVerified;
-    private RealmList<ServerAuthProvider> providers;
-    private String selectedProviderName;
-
-    public String getId() {
-        return id;
-    }
-
-    public void setId(String id) {
-        this.id = id;
-    }
-
-    public String getHostname() {
-        return hostname;
-    }
-
-    public void setHostname(String hostname) {
-        this.hostname = hostname;
-    }
-
-    public String getConnectionError() {
-        return connectionError;
-    }
-
-    public void setConnectionError(String connectionError) {
-        this.connectionError = connectionError;
-    }
-
-    public String getToken() {
-        return token;
-    }
-
-    public void setToken(String token) {
-        this.token = token;
-    }
-
-    public boolean isTokenVerified() {
-        return tokenVerified;
-    }
-
-    public void setTokenVerified(boolean tokenVerified) {
-        this.tokenVerified = tokenVerified;
-    }
-
-    public RealmList<ServerAuthProvider> getProviders() {
-        return providers;
-    }
-
-    public void setProviders(RealmList<ServerAuthProvider> providers) {
-        this.providers = providers;
-    }
-
-    public String getSelectedProviderName() {
-        return selectedProviderName;
-    }
-
-    public void setSelectedProviderName(String selectedProviderName) {
-        this.selectedProviderName = selectedProviderName;
-    }
-
-    public static RealmQuery<ServerConfig> queryLoginRequiredConnections(Realm realm) {
-        return realm.where(ServerConfig.class)
-                .equalTo("tokenVerified", false);
-    }
-
-    public static RealmQuery<ServerConfig> queryActiveConnections(Realm realm) {
-        return realm.where(ServerConfig.class)
-                .isNotNull("token");
-    }
-
-    public static boolean hasActiveConnection() {
-        ServerConfig config = RealmHelper.executeTransactionForRead(realm ->
-                queryActiveConnections(realm).findFirst());
-
-        return config != null;
-    }
-
-    @DebugLog
-    public static void logError(String id, Exception e) {
-        RealmHelperBolts
-                .executeTransaction(realm -> realm.createOrUpdateObjectFromJson(ServerConfig.class, new JSONObject()
-                        .put("id", id)
-                        .put("connectionError", e.getMessage())))
-                .continueWith(new LogcatIfError());
-    }
+  @PrimaryKey private String id;
+  private String hostname;
+  private String connectionError;
+  private String token;
+  private boolean tokenVerified;
+  private RealmList<MeteorLoginServiceConfiguration> authProviders;
+  private String selectedProviderName;
+
+  public static RealmQuery<ServerConfig> queryLoginRequiredConnections(Realm realm) {
+    return realm.where(ServerConfig.class).equalTo("tokenVerified", false);
+  }
+
+  public static RealmQuery<ServerConfig> queryActiveConnections(Realm realm) {
+    return realm.where(ServerConfig.class).isNotNull("token");
+  }
+
+  public static boolean hasActiveConnection() {
+    ServerConfig config =
+        RealmHelper.executeTransactionForRead(realm -> queryActiveConnections(realm).findFirst());
+
+    return config != null;
+  }
+
+  @DebugLog public static void logError(String id, Exception exception) {
+    RealmHelperBolts.executeTransaction(
+        realm -> realm.createOrUpdateObjectFromJson(ServerConfig.class,
+            new JSONObject().put("id", id).put("connectionError", exception.getMessage())))
+        .continueWith(new LogcatIfError());
+  }
+
+  public String getId() {
+    return id;
+  }
+
+  public void setId(String id) {
+    this.id = id;
+  }
+
+  public String getHostname() {
+    return hostname;
+  }
+
+  public void setHostname(String hostname) {
+    this.hostname = hostname;
+  }
+
+  public String getConnectionError() {
+    return connectionError;
+  }
+
+  public void setConnectionError(String connectionError) {
+    this.connectionError = connectionError;
+  }
+
+  public String getToken() {
+    return token;
+  }
+
+  public void setToken(String token) {
+    this.token = token;
+  }
+
+  public boolean isTokenVerified() {
+    return tokenVerified;
+  }
+
+  public void setTokenVerified(boolean tokenVerified) {
+    this.tokenVerified = tokenVerified;
+  }
+
+  public RealmList<MeteorLoginServiceConfiguration> getAuthProviders() {
+    return authProviders;
+  }
+
+  public void setAuthProviders(RealmList<MeteorLoginServiceConfiguration> authProviders) {
+    this.authProviders = authProviders;
+  }
+
+  public String getSelectedProviderName() {
+    return selectedProviderName;
+  }
+
+  public void setSelectedProviderName(String selectedProviderName) {
+    this.selectedProviderName = selectedProviderName;
+  }
 }

app/src/main/java/chat/rocket/android/model/doc/MeteorLoginServiceConfiguration.java

-package chat.rocket.android.model.doc;
-
-import io.realm.RealmObject;
-import io.realm.annotations.PrimaryKey;
-
-public class MeteorLoginServiceConfiguration extends RealmObject {
-    @PrimaryKey
-    private String id;
-    private String service;
-    private String consumerKey; //for Twitter
-    private String appId;//for Facebook
-    private String clientId;//for other auth providers
-}

app/src/main/java/chat/rocket/android/service/Registerable.java

 package chat.rocket.android.service;
 
+/**
+ * interface for observer and ddp_subscription.
+ */
 public interface Registerable {
-    void register();
-    void keepalive();
-    void unregister();
+  /**
+   * register.
+   */
+  void register();
+
+  /**
+   * keepalive.
+   */
+  void keepalive();
+
+  /**
+   * unregister.
+   */
+  void unregister();
 }

app/src/main/java/chat/rocket/android/service/RocketChatService.java

@@ -5,99 +5,105 @@ import android.content.Context;
 import android.content.Intent;
 import android.os.IBinder;
 import android.support.annotation.Nullable;
-
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-
 import bolts.Task;
 import chat.rocket.android.model.ServerConfig;
 import io.realm.Realm;
 import io.realm.RealmResults;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
 import jp.co.crowdworks.realm_java_helpers.RealmListObserver;
 
+/**
+ * Background service for Rocket.Chat.Application class.
+ */
 public class RocketChatService extends Service {
 
-    public static void keepalive(Context context) {
-        context.startService(new Intent(context, RocketChatService.class));
-    }
-
-    public static void kill(Context context) {
-        context.stopService(new Intent(context, RocketChatService.class));
-    }
-
-    private HashMap<String, RocketChatWebSocketThread> mWebSocketThreads;
-    private RealmListObserver<ServerConfig> mConnectionRequiredServerConfigObserver = new RealmListObserver<ServerConfig>() {
-        @Override
-        protected RealmResults<ServerConfig> queryItems(Realm realm) {
-            return realm.where(ServerConfig.class)
-                    .isNotNull("hostname")
-                    .isNull("connectionError")
-                    .findAll();
+  private HashMap<String, RocketChatWebSocketThread> webSocketThreads;
+  private RealmListObserver<ServerConfig> connectionRequiredServerConfigObserver =
+      new RealmListObserver<ServerConfig>() {
+        @Override protected RealmResults<ServerConfig> queryItems(Realm realm) {
+          return realm.where(ServerConfig.class)
+              .isNotNull("hostname")
+              .isNull("connectionError")
+              .findAll();
         }
 
-        @Override
-        protected void onCollectionChanged(List<ServerConfig> list) {
-            syncWebSocketThreadsWith(list);
+        @Override protected void onCollectionChanged(List<ServerConfig> list) {
+          syncWebSocketThreadsWith(list);
         }
-    };
+      };
 
-    @Override
-    public void onCreate() {
-        super.onCreate();
-        mWebSocketThreads = new HashMap<>();
-    }
+  /**
+   * ensure RocketChatService alive.
+   */
+  public static void keepalive(Context context) {
+    context.startService(new Intent(context, RocketChatService.class));
+  }
 
-    @Override
-    public int onStartCommand(Intent intent, int flags, int startId) {
-        mConnectionRequiredServerConfigObserver.keepalive();
-        return START_STICKY;
-    }
+  /**
+   * force stop RocketChatService.
+   */
+  public static void kill(Context context) {
+    context.stopService(new Intent(context, RocketChatService.class));
+  }
 
-    private void syncWebSocketThreadsWith(List<ServerConfig> configList) {
-        final Iterator<Map.Entry<String, RocketChatWebSocketThread>> it = mWebSocketThreads.entrySet().iterator();
-        while(it.hasNext()) {
-            Map.Entry<String, RocketChatWebSocketThread> e = it.next();
-            String id = e.getKey();
-            boolean found = false;
-            for(ServerConfig config: configList) {
-                if (id.equals(config.getId())) {
-                    found = true;
-                    break;
-                }
-            }
-            if (!found) {
-                RocketChatWebSocketThread.terminate(e.getValue());
-                it.remove();
-            }
-        }
+  @Override public void onCreate() {
+    super.onCreate();
+    webSocketThreads = new HashMap<>();
+  }
 
-        for(ServerConfig config: configList) {
-            findOrCreateWebSocketThread(config).onSuccess(task -> {
-                RocketChatWebSocketThread thread = task.getResult();
-                thread.syncStateWith(config);
-                return null;
-            });
-        }
-    }
+  @Override public int onStartCommand(Intent intent, int flags, int startId) {
+    connectionRequiredServerConfigObserver.keepalive();
+    return START_STICKY;
+  }
 
-    private Task<RocketChatWebSocketThread> findOrCreateWebSocketThread(final ServerConfig config) {
-        final String id = config.getId();
-        if (mWebSocketThreads.containsKey(id)) {
-            return Task.forResult(mWebSocketThreads.get(id));
-        }
-        else {
-            return RocketChatWebSocketThread.getStarted(getApplicationContext(), config).onSuccessTask(task -> {
-                mWebSocketThreads.put(id, task.getResult());
-                return task;
-            });
+  private void syncWebSocketThreadsWith(List<ServerConfig> configList) {
+    final Iterator<Map.Entry<String, RocketChatWebSocketThread>> iterator =
+        webSocketThreads.entrySet().iterator();
+
+    while (iterator.hasNext()) {
+      Map.Entry<String, RocketChatWebSocketThread> entry = iterator.next();
+      String serverConfigId = entry.getKey();
+      boolean found = false;
+      for (ServerConfig config : configList) {
+        if (serverConfigId.equals(config.getId())) {
+          found = true;
+          break;
         }
+      }
+      if (!found) {
+        RocketChatWebSocketThread.terminate(entry.getValue());
+        iterator.remove();
+      }
     }
 
-    @Nullable
-    @Override
-    public IBinder onBind(Intent intent) {
+    for (ServerConfig config : configList) {
+      findOrCreateWebSocketThread(config).onSuccess(task -> {
+        RocketChatWebSocketThread thread = task.getResult();
+        thread.syncStateWith(config);
         return null;
+      });
     }
-}
+  }
\ No newline at end of file
+
+  private Task<RocketChatWebSocketThread> findOrCreateWebSocketThread(final ServerConfig config) {
+    final String serverConfigId = config.getId();
+    if (webSocketThreads.containsKey(serverConfigId)) {
+      return Task.forResult(webSocketThreads.get(serverConfigId));
+    } else {
+      return RocketChatWebSocketThread.getStarted(getApplicationContext(), config)
+          .onSuccessTask(task -> {
+            webSocketThreads.put(serverConfigId, task.getResult());
+            return task;
+          });
+    }
+  }
+
+  @Nullable
+  @Override
+  public IBinder onBind(Intent intent) {
+    return null;
+  }
+}

app/src/main/java/chat/rocket/android/service/RocketChatWebSocketThread.java

@@ -3,199 +3,206 @@ package chat.rocket.android.service;
 import android.content.Context;
 import android.os.Handler;
 import android.os.HandlerThread;
-
-import java.lang.reflect.Constructor;
-import java.util.ArrayList;
-import java.util.Iterator;
-
 import bolts.Task;
 import bolts.TaskCompletionSource;
 import chat.rocket.android.helper.TextUtils;
 import chat.rocket.android.model.ServerConfig;
-import chat.rocket.android.service.ddp_subscription.LoginServiceConfigurationSubscriber;
+import chat.rocket.android.service.ddp_subscriber.LoginServiceConfigurationSubscriber;
 import chat.rocket.android.ws.RocketChatWebSocketAPI;
 import chat.rocket.android_ddp.DDPClient;
 import hugo.weaving.DebugLog;
+import java.lang.reflect.Constructor;
+import java.util.ArrayList;
+import java.util.Iterator;
 import jp.co.crowdworks.realm_java_helpers.RealmHelper;
 import timber.log.Timber;
 
-import static android.content.ContentValues.TAG;
-
+/**
+ * Thread for handling WebSocket connection.
+ */
 public class RocketChatWebSocketThread extends HandlerThread {
-    private final Context mAppContext;
-    private final String mServerConfigId;
-    private RocketChatWebSocketAPI mWebSocketAPI;
-    private boolean mSocketExists;
-    private boolean mListenersRegistered;
-
-    private RocketChatWebSocketThread(Context appContext, String id) {
-        super("RC_thread_"+id);
-        mServerConfigId = id;
-        mAppContext = appContext;
+  private static final Class[] REGISTERABLE_CLASSES = {
+      LoginServiceConfigurationSubscriber.class
+  };
+  private final Context appContext;
+  private final String serverConfigId;
+  private final ArrayList<Registerable> listeners = new ArrayList<>();
+  private RocketChatWebSocketAPI webSocketAPI;
+  private boolean socketExists;
+  private boolean listenersRegistered;
+
+  private RocketChatWebSocketThread(Context appContext, String serverConfigId) {
+    super("RC_thread_" + serverConfigId);
+    this.serverConfigId = serverConfigId;
+    this.appContext = appContext;
+  }
+
+  /**
+   * create new Thread.
+   */
+  @DebugLog public static Task<RocketChatWebSocketThread> getStarted(Context appContext,
+      ServerConfig config) {
+    TaskCompletionSource<RocketChatWebSocketThread> task = new TaskCompletionSource<>();
+    new RocketChatWebSocketThread(appContext, config.getId()) {
+      @Override protected void onLooperPrepared() {
+        try {
+          super.onLooperPrepared();
+          task.setResult(this);
+        } catch (Exception exception) {
+          task.setError(exception);
+        }
+      }
+    }.start();
+    return task.getTask();
+  }
+
+  /**
+   * terminate the thread.
+   */
+  @DebugLog public static void terminate(RocketChatWebSocketThread thread) {
+    thread.quit();
+  }
+
+  private Task<Void> ensureConnection() {
+    if (webSocketAPI == null || !webSocketAPI.isConnected()) {
+      return registerListeners();
+    } else {
+      return Task.forResult(null);
     }
-
-    @DebugLog
-    public static Task<RocketChatWebSocketThread> getStarted(Context appContext, ServerConfig config) {
-        TaskCompletionSource<RocketChatWebSocketThread> task = new TaskCompletionSource<>();
-        new RocketChatWebSocketThread(appContext, config.getId()){
-            @Override
-            protected void onLooperPrepared() {
-                try {
-                    super.onLooperPrepared();
-                    task.setResult(this);
-                }
-                catch (Exception e) {
-                    task.setError(e);
-                }
-            }
-        }.start();
-        return task.getTask();
+  }
+
+  /**
+   * synchronize the state of the thread with ServerConfig.
+   */
+  @DebugLog public void syncStateWith(ServerConfig config) {
+    if (config == null || TextUtils.isEmpty(config.getHostname()) || !TextUtils.isEmpty(
+        config.getConnectionError())) {
+      quit();
+    } else {
+      ensureConnection().continueWith(task -> {
+        new Handler(getLooper()).post(this::keepaliveListeners);
+        return null;
+      });
     }
-
-    @DebugLog
-    public static void terminate(RocketChatWebSocketThread t) {
-        t.quit();
+  }
+
+  @Override protected void onLooperPrepared() {
+    super.onLooperPrepared();
+
+    registerListeners();
+  }
+
+  @Override public boolean quit() {
+    scheduleUnregisterListeners();
+    return super.quit();
+  }
+
+  @Override public boolean quitSafely() {
+    scheduleUnregisterListeners();
+    return super.quitSafely();
+  }
+
+  private void scheduleUnregisterListeners() {
+    if (isAlive()) {
+      new Handler(getLooper()).post(() -> {
+        Timber.d("thread %s: quit()", Thread.currentThread().getId());
+        unregisterListeners();
+      });
     }
+  }
 
-    private Task<Void> ensureConnection() {
-        if (mWebSocketAPI == null || !mWebSocketAPI.isConnected()) {
-            return registerListeners();
-        }
-        else return Task.forResult(null);
-    }
+  private void prepareWebSocket() {
+    ServerConfig config = RealmHelper.executeTransactionForRead(
+        realm -> realm.where(ServerConfig.class).equalTo("id", serverConfigId).findFirst());
 
-    @DebugLog
-    public void syncStateWith(ServerConfig config) {
-        if (config == null || TextUtils.isEmpty(config.getHostname()) || !TextUtils.isEmpty(config.getConnectionError())) {
-            quit();
-        }
-        else {
-            ensureConnection()
-                    .continueWith(task -> {
-                        new Handler(getLooper()).post(() -> {
-                            keepaliveListeners();
-                        });
-                        return null;
-                    });
-        }
+    if (webSocketAPI == null || !webSocketAPI.isConnected()) {
+      webSocketAPI = RocketChatWebSocketAPI.create(config.getHostname());
     }
+  }
 
-    @Override
-    protected void onLooperPrepared() {
-        super.onLooperPrepared();
-
-        registerListeners();
+  @DebugLog private Task<Void> registerListeners() {
+    if (socketExists) {
+      return Task.forResult(null);
     }
 
-    @Override
-    public boolean quit() {
-        scheduleUnregisterListeners();
-        return super.quit();
+    socketExists = true;
+    prepareWebSocket();
+    return webSocketAPI.connect().onSuccess(task -> {
+      registerListenersActually();
+
+      DDPClient client = task.getResult().client;
+
+      // handling WebSocket#onClose() callback.
+      client.getOnCloseCallback().onSuccess(_task -> {
+        quit();
+        return null;
+      });
+
+      // just for debugging.
+      client.getSubscriptionCallback().subscribe(event -> {
+        Timber.d("Callback [DEBUG] < " + event);
+      });
+
+      return null;
+    }).continueWith(task -> {
+      if (task.isFaulted()) {
+        ServerConfig.logError(serverConfigId, task.getError());
+      }
+      return null;
+    });
+  }
+
+  //@DebugLog
+  private void registerListenersActually() {
+    if (listenersRegistered) {
+      return;
     }
+    listenersRegistered = true;
 
-    @Override
-    public boolean quitSafely() {
-        scheduleUnregisterListeners();
-        return super.quitSafely();
-    }
+    for (Class clazz : REGISTERABLE_CLASSES) {
+      try {
+        Constructor ctor = clazz.getConstructor(Context.class, RocketChatWebSocketAPI.class);
+        Object obj = ctor.newInstance(appContext, webSocketAPI);
 
-    private void scheduleUnregisterListeners() {
-        if (isAlive()) {
-            new Handler(getLooper()).post(() -> {
-                Timber.d("thread %s: quit()", Thread.currentThread().getId());
-                unregisterListeners();
-            });
+        if (obj instanceof Registerable) {
+          Registerable registerable = (Registerable) obj;
+          registerable.register();
+          listeners.add(registerable);
         }
+      } catch (Exception exception) {
+        Timber.w(exception, "Failed to register listeners!!");
+      }
     }
+  }
 
-    private static final Class[] REGISTERABLE_CLASSES = {
-            LoginServiceConfigurationSubscriber.class
-    };
-
-    private final ArrayList<Registerable> mListeners = new ArrayList<>();
-
-    private void prepareWebSocket() {
-        ServerConfig config = RealmHelper.executeTransactionForRead(realm -> realm.where(ServerConfig.class).equalTo("id", mServerConfigId).findFirst());
-        if (mWebSocketAPI == null || !mWebSocketAPI.isConnected()) {
-            mWebSocketAPI = RocketChatWebSocketAPI.create(config.getHostname());
-        }
+  //@DebugLog
+  private void keepaliveListeners() {
+    if (!socketExists || !listenersRegistered) {
+      return;
     }
 
-    @DebugLog
-    private Task<Void> registerListeners(){
-        if (mSocketExists) return Task.forResult(null);
-
-        mSocketExists = true;
-        prepareWebSocket();
-        return mWebSocketAPI.connect().onSuccess(task -> {
-            registerListenersActually();
-
-            DDPClient client = task.getResult().client;
-
-            // handling WebSocket#onClose() callback.
-            client.getOnCloseCallback().onSuccess(_task -> {
-                quit();
-                return null;
-            });
-
-            // just for debugging.
-            client.getSubscriptionCallback().subscribe(event -> {
-                Timber.d(TAG, "Callback [DEBUG] < " + event);
-            });
-
-            return null;
-        }).continueWith(task -> {
-            if (task.isFaulted()) {
-                ServerConfig.logError(mServerConfigId, task.getError());
-            }
-            return null;
-        });
+    for (Registerable registerable : listeners) {
+      registerable.keepalive();
     }
+  }
 
-    //@DebugLog
-    private void registerListenersActually() {
-        if (mListenersRegistered) return;
-        mListenersRegistered = true;
-
-        for(Class clazz: REGISTERABLE_CLASSES){
-            try {
-                Constructor ctor = clazz.getConstructor(Context.class, RocketChatWebSocketAPI.class);
-                Object obj = ctor.newInstance(mAppContext, mWebSocketAPI);
-
-                if(obj instanceof Registerable) {
-                    Registerable l = (Registerable) obj;
-                    l.register();
-                    mListeners.add(l);
-                }
-            } catch (Exception e) {
-                Timber.w(e);
-            }
-        }
+  //@DebugLog
+  private void unregisterListeners() {
+    if (!socketExists || !listenersRegistered) {
+      return;
     }
 
-    //@DebugLog
-    private void keepaliveListeners(){
-        if (!mSocketExists || !mListenersRegistered) return;
-
-        for (Registerable l : mListeners) l.keepalive();
+    Iterator<Registerable> iterator = listeners.iterator();
+    while (iterator.hasNext()) {
+      Registerable registerable = iterator.next();
+      registerable.unregister();
+      iterator.remove();
     }
-
-    //@DebugLog
-    private void unregisterListeners(){
-        if (!mSocketExists || !mListenersRegistered) return;
-
-        Iterator<Registerable> it = mListeners.iterator();
-        while(it.hasNext()){
-            Registerable l = it.next();
-            l.unregister();
-            it.remove();
-        }
-        if (mWebSocketAPI != null) {
-            mWebSocketAPI.close();
-            mWebSocketAPI = null;
-        }
-        mListenersRegistered = false;
-        mSocketExists = false;
+    if (webSocketAPI != null) {
+      webSocketAPI.close();
+      webSocketAPI = null;
     }
-
+    listenersRegistered = false;
+    socketExists = false;
+  }
 }

app/src/main/java/chat/rocket/android/service/ddp_subscriber/AbstractDDPDocEventSubscriber.java

+package chat.rocket.android.service.ddp_subscriber;
+
+import android.content.Context;
+import android.text.TextUtils;
+import chat.rocket.android.helper.LogcatIfError;
+import chat.rocket.android.service.Registerable;
+import chat.rocket.android.ws.RocketChatWebSocketAPI;
+import chat.rocket.android_ddp.DDPSubscription;
+import io.realm.Realm;
+import io.realm.RealmObject;
+import java.util.Iterator;
+import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
+import org.json.JSONException;
+import org.json.JSONObject;
+import rx.Subscription;
+import timber.log.Timber;
+
+abstract class AbstractDDPDocEventSubscriber implements Registerable {
+  protected final Context context;
+  protected final RocketChatWebSocketAPI webSocketAPI;
+  private String subscriptionId;
+  private Subscription rxSubscription;
+
+  protected AbstractDDPDocEventSubscriber(Context context, RocketChatWebSocketAPI api) {
+    this.context = context;
+    this.webSocketAPI = api;
+  }
+
+  protected abstract String getSubscriptionName();
+
+  protected abstract String getSubscriptionCallbackName();
+
+  protected abstract Class<? extends RealmObject> getModelClass();
+
+  protected JSONObject customizeFieldJson(JSONObject json) {
+    return json;
+  }
+
+  @Override public void register() {
+    webSocketAPI.subscribe(getSubscriptionName(), null).onSuccess(task -> {
+      subscriptionId = task.getResult().id;
+      return null;
+    }).continueWith(task -> {
+      if (task.isFaulted()) {
+        Timber.w(task.getError(), "DDP subscription failed.");
+      }
+      return null;
+    });
+
+    RealmHelperBolts.executeTransaction(realm -> {
+      realm.delete(getModelClass());
+      return null;
+    }).onSuccess(task -> {
+      registerSubscriptionCallback();
+      return null;
+    }).continueWith(new LogcatIfError());
+  }
+
+  private void registerSubscriptionCallback() {
+    rxSubscription = webSocketAPI.getSubscriptionCallback()
+        .filter(event -> event instanceof DDPSubscription.DocEvent)
+        .cast(DDPSubscription.DocEvent.class)
+        .filter(event -> getSubscriptionCallbackName().equals(event.collection))
+        .subscribe(docEvent -> {
+          try {
+            if (docEvent instanceof DDPSubscription.Added.Before) {
+              onDocumentAdded((DDPSubscription.Added) docEvent); //ignore Before
+            } else if (docEvent instanceof DDPSubscription.Added) {
+              onDocumentAdded((DDPSubscription.Added) docEvent);
+            } else if (docEvent instanceof DDPSubscription.Removed) {
+              onDocumentRemoved((DDPSubscription.Removed) docEvent);
+            } else if (docEvent instanceof DDPSubscription.Changed) {
+              onDocumentChanged((DDPSubscription.Changed) docEvent);
+            } else if (docEvent instanceof DDPSubscription.MovedBefore) {
+              //ignore movedBefore
+            }
+          } catch (Exception exception) {
+            Timber.w(exception, "failed to handle subscription callback");
+          }
+        });
+  }
+
+  protected void onDocumentAdded(DDPSubscription.Added docEvent) {
+    RealmHelperBolts.executeTransaction(realm -> {
+      onDocumentAdded(realm, docEvent);
+      return null;
+    }).continueWith(new LogcatIfError());
+  }
+
+  private void onDocumentAdded(Realm realm, DDPSubscription.Added docEvent) throws JSONException {
+    //executed in RealmTransaction
+    JSONObject json = new JSONObject().put("id", docEvent.docID);
+    mergeJson(json, docEvent.fields);
+    realm.createOrUpdateObjectFromJson(getModelClass(), customizeFieldJson(json));
+  }
+
+  protected void onDocumentChanged(DDPSubscription.Changed docEvent) {
+    RealmHelperBolts.executeTransaction(realm -> {
+      onDocumentChanged(realm, docEvent);
+      return null;
+    }).continueWith(new LogcatIfError());
+  }
+
+  private void onDocumentChanged(Realm realm, DDPSubscription.Changed docEvent)
+      throws JSONException {
+    //executed in RealmTransaction
+    JSONObject json = new JSONObject().put("id", docEvent.docID);
+    for (int i = 0; i < docEvent.cleared.length(); i++) {
+      String fieldToDelete = docEvent.cleared.getString(i);
+      json.remove(fieldToDelete);
+    }
+    mergeJson(json, docEvent.fields);
+    realm.createOrUpdateObjectFromJson(getModelClass(), customizeFieldJson(json));
+  }
+
+  protected void onDocumentRemoved(DDPSubscription.Removed docEvent) {
+    RealmHelperBolts.executeTransaction(realm -> {
+      onDocumentRemoved(realm, docEvent);
+      return null;
+    }).continueWith(new LogcatIfError());
+  }
+
+  private void onDocumentRemoved(Realm realm, DDPSubscription.Removed docEvent)
+      throws JSONException {
+    //executed in RealmTransaction
+    realm.where(getModelClass()).equalTo("id", docEvent.docID).findAll().deleteAllFromRealm();
+  }
+
+  private void mergeJson(JSONObject target, JSONObject src) throws JSONException {
+    Iterator<String> iterator = src.keys();
+    while (iterator.hasNext()) {
+      String key = iterator.next();
+      target.put(key, src.get(key));
+    }
+  }
+
+  @Override public void keepalive() {
+
+  }
+
+  @Override public void unregister() {
+    if (rxSubscription != null) {
+      rxSubscription.unsubscribe();
+    }
+    if (!TextUtils.isEmpty(subscriptionId)) {
+      webSocketAPI.unsubscribe(subscriptionId).continueWith(new LogcatIfError());
+    }
+  }
+}

app/src/main/java/chat/rocket/android/service/ddp_subscriber/LoginServiceConfigurationSubscriber.java

+package chat.rocket.android.service.ddp_subscriber;
+
+import android.content.Context;
+import chat.rocket.android.model.MeteorLoginServiceConfiguration;
+import chat.rocket.android.ws.RocketChatWebSocketAPI;
+import io.realm.RealmObject;
+
+/**
+ * meteor.loginServiceConfiguration subscriber
+ */
+public class LoginServiceConfigurationSubscriber extends AbstractDDPDocEventSubscriber {
+  public LoginServiceConfigurationSubscriber(Context context, RocketChatWebSocketAPI api) {
+    super(context, api);
+  }
+
+  @Override protected String getSubscriptionName() {
+    return "meteor.loginServiceConfiguration";
+  }
+
+  @Override protected String getSubscriptionCallbackName() {
+    return "meteor_accounts_loginServiceConfiguration";
+  }
+
+  @Override protected Class<? extends RealmObject> getModelClass() {
+    return MeteorLoginServiceConfiguration.class;
+  }
+}

app/src/main/java/chat/rocket/android/service/ddp_subscription/AbstractDDPDocEventSubscriber.java

-package chat.rocket.android.service.ddp_subscription;
-
-import android.content.Context;
-import android.text.TextUtils;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import java.util.Iterator;
-
-import chat.rocket.android.helper.LogcatIfError;
-import chat.rocket.android.service.Registerable;
-import chat.rocket.android.ws.RocketChatWebSocketAPI;
-import chat.rocket.android_ddp.DDPSubscription;
-import io.realm.Realm;
-import io.realm.RealmObject;
-import jp.co.crowdworks.realm_java_helpers_bolts.RealmHelperBolts;
-import rx.Subscription;
-import timber.log.Timber;
-
-abstract class AbstractDDPDocEventSubscriber implements Registerable {
-    protected final Context mContext;
-    protected final RocketChatWebSocketAPI mAPI;
-    private String mID;
-    private Subscription mSubscription;
-
-    public AbstractDDPDocEventSubscriber(Context context, RocketChatWebSocketAPI api) {
-        mContext = context;
-        mAPI = api;
-    }
-
-    protected abstract String getSubscriptionName();
-    protected abstract String getSubscriptionCallbackName();
-    protected abstract Class<? extends RealmObject> getModelClass();
-    protected JSONObject customizeFieldJSON(JSONObject json) { return json; }
-
-    @Override
-    public void register() {
-        mAPI.subscribe(getSubscriptionName(), null).onSuccess(task -> {
-            mID = task.getResult().id;
-            return null;
-        }).continueWith(task -> {
-            if (task.isFaulted()) {
-                Timber.w(task.getError());
-            }
-            return null;
-        });
-
-        RealmHelperBolts.executeTransaction(realm -> {
-            realm.delete(getModelClass());
-            return null;
-        }).onSuccess(task -> {
-            registerSubscriptionCallback();
-            return null;
-        }).continueWith(new LogcatIfError());
-    }
-
-    private void registerSubscriptionCallback() {
-        mSubscription = mAPI.getSubscriptionCallback()
-                .filter(event -> event instanceof DDPSubscription.DocEvent
-                        && getSubscriptionCallbackName().equals(((DDPSubscription.DocEvent) event).collection))
-                .cast(DDPSubscription.DocEvent.class)
-                .subscribe(docEvent -> {
-                    try {
-                        if (docEvent instanceof DDPSubscription.Added.Before) {
-                            onDocumentAdded((DDPSubscription.Added) docEvent); //ignore Before
-                        } else if (docEvent instanceof DDPSubscription.Added) {
-                            onDocumentAdded((DDPSubscription.Added) docEvent);
-                        } else if (docEvent instanceof DDPSubscription.Removed) {
-                            onDocumentRemoved((DDPSubscription.Removed) docEvent);
-                        } else if (docEvent instanceof DDPSubscription.Changed) {
-                            onDocumentChanged((DDPSubscription.Changed) docEvent);
-                        } else if (docEvent instanceof DDPSubscription.MovedBefore) {
-                            //ignore movedBefore
-                        }
-                    } catch (Exception e) {
-                        Timber.w(e);
-                    }
-                });
-    }
-
-    protected void onDocumentAdded(DDPSubscription.Added docEvent) {
-        RealmHelperBolts.executeTransaction(realm -> {
-            onDocumentAdded(realm, docEvent);
-            return null;
-        }).continueWith(new LogcatIfError());
-    }
-
-    protected void onDocumentChanged(DDPSubscription.Changed docEvent) {
-        RealmHelperBolts.executeTransaction(realm -> {
-            onDocumentChanged(realm, docEvent);
-            return null;
-        }).continueWith(new LogcatIfError());
-    }
-
-    protected void onDocumentRemoved(DDPSubscription.Removed docEvent) {
-        RealmHelperBolts.executeTransaction(realm -> {
-            onDocumentRemoved(realm, docEvent);
-            return null;
-        }).continueWith(new LogcatIfError());
-    }
-
-    private void mergeJSON(JSONObject target, JSONObject src) throws JSONException {
-        Iterator<String> it = src.keys();
-        while(it.hasNext()) {
-            String key = it.next();
-            target.put(key, src.get(key));
-        }
-    }
-
-    private void onDocumentAdded(Realm realm, DDPSubscription.Added docEvent) throws JSONException {
-        //executed in RealmTransaction
-        JSONObject json = new JSONObject().put("id", docEvent.docID);
-        mergeJSON(json, docEvent.fields);
-        realm.createOrUpdateObjectFromJson(getModelClass(), customizeFieldJSON(json));
-    }
-
-    private void onDocumentChanged(Realm realm, DDPSubscription.Changed docEvent) throws JSONException {
-        //executed in RealmTransaction
-        JSONObject json = new JSONObject().put("id", docEvent.docID);
-        for (int i=0; i<docEvent.cleared.length(); i++) {
-            String fieldToDelete = docEvent.cleared.getString(i);
-            json.remove(fieldToDelete);
-        }
-        mergeJSON(json, docEvent.fields);
-        realm.createOrUpdateObjectFromJson(getModelClass(), customizeFieldJSON(json));
-    }
-
-    private void onDocumentRemoved(Realm realm, DDPSubscription.Removed docEvent) throws JSONException {
-        //executed in RealmTransaction
-        realm.where(getModelClass()).equalTo("id", docEvent.docID).findAll().deleteAllFromRealm();
-    }
-
-    @Override
-    public void keepalive() {
-
-    }
-
-    @Override
-    public void unregister() {
-        if (mSubscription != null) mSubscription.unsubscribe();
-        if (!TextUtils.isEmpty(mID)) {
-            mAPI.unsubscribe(mID).continueWith(new LogcatIfError());
-        }
-    }
-}

app/src/main/java/chat/rocket/android/service/ddp_subscription/LoginServiceConfigurationSubscriber.java

-package chat.rocket.android.service.ddp_subscription;
-
-import android.content.Context;
-
-import chat.rocket.android.model.doc.MeteorLoginServiceConfiguration;
-import chat.rocket.android.ws.RocketChatWebSocketAPI;
-import io.realm.RealmObject;
-
-public class LoginServiceConfigurationSubscriber extends AbstractDDPDocEventSubscriber {
-    public LoginServiceConfigurationSubscriber(Context context, RocketChatWebSocketAPI api) {
-        super(context, api);
-    }
-
-    @Override
-    protected String getSubscriptionName() {
-        return "meteor.loginServiceConfiguration";
-    }
-
-    @Override
-    protected String getSubscriptionCallbackName() {
-        return "meteor_accounts_loginServiceConfiguration";
-    }
-
-    @Override
-    protected Class<? extends RealmObject> getModelClass() {
-        return MeteorLoginServiceConfiguration.class;
-    }
-}

app/src/main/java/chat/rocket/android/service/observer/AbstractModelObserver.java

 package chat.rocket.android.service.observer;
 
 import android.content.Context;
-
 import chat.rocket.android.service.Registerable;
 import chat.rocket.android.ws.RocketChatWebSocketAPI;
 import io.realm.RealmObject;
 import jp.co.crowdworks.realm_java_helpers.RealmListObserver;
 
-abstract class AbstractModelObserver<T extends RealmObject> extends RealmListObserver<T> implements Registerable {
-
-    protected final Context mContext;
-    protected final RocketChatWebSocketAPI mAPI;
+abstract class AbstractModelObserver<T extends RealmObject> extends RealmListObserver<T>
+    implements Registerable {
 
-    public AbstractModelObserver(Context context, RocketChatWebSocketAPI api) {
-        mContext = context;
-        mAPI = api;
-    }
+  protected final Context context;
+  protected final RocketChatWebSocketAPI webSocketAPI;
 
+  protected AbstractModelObserver(Context context, RocketChatWebSocketAPI api) {
+    this.context = context;
+    webSocketAPI = api;
+  }
 
-    @Override
-    public void register() {
-        sub();
-    }
+  @Override public void register() {
+    sub();
+  }
 
-    @Override
-    public void unregister() {
-        unsub();
-    }
+  @Override public void unregister() {
+    unsub();
+  }
 }

app/src/main/java/chat/rocket/android/view/AbstractCustomFontTextView.java

@@ -7,28 +7,30 @@ import android.util.AttributeSet;
 
 abstract class AbstractCustomFontTextView extends AppCompatTextView {
 
-    protected abstract String getFont();
+  public AbstractCustomFontTextView(Context context, AttributeSet attrs, int defStyle) {
+    super(context, attrs, defStyle);
+    init();
+  }
 
-    public AbstractCustomFontTextView(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-        init();
-    }
+  public AbstractCustomFontTextView(Context context, AttributeSet attrs) {
+    super(context, attrs);
+    init();
+  }
 
-    public AbstractCustomFontTextView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init();
-    }
+  public AbstractCustomFontTextView(Context context) {
+    super(context);
+    init();
+  }
 
-    public AbstractCustomFontTextView(Context context) {
-        super(context);
-        init();
-    }
+  protected abstract String getFont();
 
-    private void init() {
-        String font = getFont();
-        if (font!=null) {
-            Typeface tf = TypefaceHelper.getTypeface(getContext(), font);
-            if (tf!=null) setTypeface(tf);
-        }
+  private void init() {
+    String font = getFont();
+    if (font != null) {
+      Typeface typeface = TypefaceHelper.getTypeface(getContext(), font);
+      if (typeface != null) {
+        setTypeface(typeface);
+      }
     }
+  }
 }

app/src/main/java/chat/rocket/android/view/FontAwesomeTextView.java

@@ -3,21 +3,23 @@ package chat.rocket.android.view;
 import android.content.Context;
 import android.util.AttributeSet;
 
+/**
+ * TextView with font-awesome.
+ */
 public class FontAwesomeTextView extends AbstractCustomFontTextView {
-    public FontAwesomeTextView(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-    }
+  public FontAwesomeTextView(Context context, AttributeSet attrs, int defStyle) {
+    super(context, attrs, defStyle);
+  }
 
-    public FontAwesomeTextView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
+  public FontAwesomeTextView(Context context, AttributeSet attrs) {
+    super(context, attrs);
+  }
 
-    public FontAwesomeTextView(Context context) {
-        super(context);
-    }
+  public FontAwesomeTextView(Context context) {
+    super(context);
+  }
 
-    @Override
-    protected String getFont() {
-        return "fontawesome-webfont.ttf";
-    }
+  @Override protected String getFont() {
+    return "fontawesome-webfont.ttf";
+  }
 }

app/src/main/java/chat/rocket/android/view/FontelloTextView.java

@@ -3,21 +3,23 @@ package chat.rocket.android.view;
 import android.content.Context;
 import android.util.AttributeSet;
 
+/**
+ * TextView with fontello.
+ */
 public class FontelloTextView extends AbstractCustomFontTextView {
-    public FontelloTextView(Context context, AttributeSet attrs, int defStyle) {
-        super(context, attrs, defStyle);
-    }
+  public FontelloTextView(Context context, AttributeSet attrs, int defStyle) {
+    super(context, attrs, defStyle);
+  }
 
-    public FontelloTextView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
+  public FontelloTextView(Context context, AttributeSet attrs) {
+    super(context, attrs);
+  }
 
-    public FontelloTextView(Context context) {
-        super(context);
-    }
+  public FontelloTextView(Context context) {
+    super(context);
+  }
 
-    @Override
-    protected String getFont() {
-        return "fontello.ttf";
-    }
+  @Override protected String getFont() {
+    return "fontello.ttf";
+  }
 }

app/src/main/java/chat/rocket/android/view/TypefaceHelper.java

@@ -3,29 +3,32 @@ package chat.rocket.android.view;
 import android.content.Context;
 import android.graphics.Typeface;
 import android.util.Log;
-
 import java.util.Hashtable;
 
-// ref：https://code.google.com/p/android/issues/detail?id=9904#c7
+/**
+ * Helper for reading typeface. ref：https://code.google.com/p/android/issues/detail?id=9904#c7
+ */
 public class TypefaceHelper {
-    private static final String TAG = TypefaceHelper.class.getName();
+  private static final String TAG = TypefaceHelper.class.getName();
 
-    private static final Hashtable<String, Typeface> cache = new Hashtable<String, Typeface>();
+  private static final Hashtable<String, Typeface> CACHE = new Hashtable<String, Typeface>();
 
-    public static Typeface getTypeface(Context c, String assetPath) {
-        synchronized (cache) {
-            if (!cache.containsKey(assetPath)) {
-                try {
-                    Typeface t = Typeface.createFromAsset(c.getAssets(),
-                            assetPath);
-                    cache.put(assetPath, t);
-                } catch (Exception e) {
-                    Log.e(TAG, "Could not get typeface '" + assetPath
-                            + "' because " + e.getMessage());
-                    return null;
-                }
-            }
-            return cache.get(assetPath);
+  /**
+   * read font in assets directory.
+   */
+  public static Typeface getTypeface(Context context, String assetPath) {
+    synchronized (CACHE) {
+      if (!CACHE.containsKey(assetPath)) {
+        try {
+          Typeface typeface = Typeface.createFromAsset(context.getAssets(), assetPath);
+          CACHE.put(assetPath, typeface);
+        } catch (Exception exception) {
+          Log.e(TAG,
+              "Could not get typeface '" + assetPath + "' because " + exception.getMessage());
+          return null;
         }
+      }
+      return CACHE.get(assetPath);
     }
+  }
 }

app/src/main/java/chat/rocket/android/view/WaitingView.java

@@ -11,106 +11,108 @@ import android.view.View;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
-
-import java.util.ArrayList;
-
 import chat.rocket.android.R;
+import java.util.ArrayList;
 
-
+/**
+ * View for indicating "waiting for connection ..." and so on.
+ */
 public class WaitingView extends LinearLayout {
-    private ArrayList<View> mDots;
-
-    public WaitingView(Context context) {
-        super(context);
-        initialize(context, null);
+  private ArrayList<View> dots;
+
+  public WaitingView(Context context) {
+    super(context);
+    initialize(context, null);
+  }
+
+  public WaitingView(Context context, AttributeSet attrs) {
+    super(context, attrs);
+    initialize(context, attrs);
+  }
+
+  public WaitingView(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+    initialize(context, attrs);
+  }
+
+  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
+  public WaitingView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+    super(context, attrs, defStyleAttr, defStyleRes);
+    initialize(context, attrs);
+  }
+
+  private void initialize(Context context, AttributeSet attrs) {
+    int size = context.getResources().getDimensionPixelSize(R.dimen.def_waiting_view_dot_size);
+    int count = 3;
+
+    if (attrs != null) {
+      TypedArray array =
+          context.getTheme().obtainStyledAttributes(attrs, R.styleable.WaitingView, 0, 0);
+      size = array.getDimensionPixelSize(R.styleable.WaitingView_dotSize, size);
+      count = array.getInteger(R.styleable.WaitingView_dotCount, count);
+      array.recycle();
     }
 
-    public WaitingView(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        initialize(context, attrs);
+    dots = new ArrayList<>();
+    setOrientation(HORIZONTAL);
+    for (int i = 0; i < count; i++) {
+      addDot(context, size);
     }
 
-    public WaitingView(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-        initialize(context, attrs);
+    addOnAttachStateChangeListener(new OnAttachStateChangeListener() {
+      @Override public void onViewAttachedToWindow(View view) {
+        start();
+      }
+
+      @Override public void onViewDetachedFromWindow(View view) {
+        cancel();
+      }
+    });
+  }
+
+  private void addDot(Context context, int size) {
+    FrameLayout frameLayout = new FrameLayout(context);
+    frameLayout.setLayoutParams(new LinearLayoutCompat.LayoutParams(size * 3 / 2, size * 3 / 2));
+    ImageView dot = new ImageView(context);
+    dot.setImageResource(R.drawable.white_circle);
+    dot.setLayoutParams(new FrameLayout.LayoutParams(size, size, Gravity.CENTER));
+    frameLayout.addView(dot);
+    addView(frameLayout);
+    dots.add(dot);
+  }
+
+  private void start() {
+    for (int i = 0; i < dots.size(); i++) {
+      animateDot(dots.get(i), 160 * i, 480, 480);
     }
-
-    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-    public WaitingView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-        initialize(context, attrs);
-    }
-
-    private void initialize(Context context, AttributeSet attrs) {
-        int size = context.getResources().getDimensionPixelSize(R.dimen.def_waiting_view_dot_size);
-        int count = 3;
-
-        if (attrs != null) {
-            TypedArray a = context.getTheme().obtainStyledAttributes(
-                    attrs,
-                    R.styleable.WaitingView, 0, 0);
-            size = a.getDimensionPixelSize(R.styleable.WaitingView_dotSize, size);
-            count = a.getInteger(R.styleable.WaitingView_dotCount, count);
-            a.recycle();
-        }
-
-        mDots = new ArrayList<>();
-        setOrientation(HORIZONTAL);
-        for (int i=0; i<count; i++) addDot(context, size);
-
-        addOnAttachStateChangeListener(new OnAttachStateChangeListener() {
-            @Override
-            public void onViewAttachedToWindow(View view) {
-                start();
-            }
-
-            @Override
-            public void onViewDetachedFromWindow(View view) {
-                cancel();
-            }
-        });
-    }
-
-    private void addDot(Context context, int size) {
-        FrameLayout f = new FrameLayout(context);
-        f.setLayoutParams(new LinearLayoutCompat.LayoutParams(size*3/2, size*3/2));
-        ImageView dot = new ImageView(context);
-        dot.setImageResource(R.drawable.white_circle);
-        dot.setLayoutParams(new FrameLayout.LayoutParams(size, size, Gravity.CENTER));
-        f.addView(dot);
-        addView(f);
-        mDots.add(dot);
-    }
-
-    private void start() {
-        for(int i=0; i<mDots.size(); i++) {
-            animateDot(mDots.get(i), 160*i, 480, 480);
-        }
-    }
-
-    private void animateDot(final View dot, final long startDelay, final long duration, final long interval) {
-        dot.setScaleX(0);
-        dot.setScaleY(0);
-        dot.animate()
-                .scaleX(1).scaleY(1)
-                .setDuration(duration)
-                .setStartDelay(startDelay)
-                .withEndAction(() -> {
-                    dot.animate()
-                            .scaleX(0).scaleY(0)
-                            .setDuration(duration)
-                            .setStartDelay(0)
-                            .withEndAction(() -> {
-                                animateDot(dot, interval, duration, interval);
-                            })
-                            .start();
-                })
-                .start();
-    }
-
-    private void cancel() {
-        for(View dot: mDots) {
-            dot.clearAnimation();
-        }
+  }
+
+  private void animateDot(final View dot, final long startDelay, final long duration,
+      final long interval) {
+    dot.setScaleX(0);
+    dot.setScaleY(0);
+    dot.animate()
+        .scaleX(1)
+        .scaleY(1)
+        .setDuration(duration)
+        .setStartDelay(startDelay)
+        .withEndAction(() -> {
+          dot.animate()
+              .scaleX(0)
+              .scaleY(0)
+              .setDuration(duration)
+              .setStartDelay(0)
+              .withEndAction(() -> {
+                animateDot(dot, interval, duration, interval);
+              })
+              .start();
+        })
+        .start();
+  }
+
+  private void cancel() {
+    for (View dot : dots) {
+      dot.clearAnimation();
     }
+  }
 }

app/src/main/java/chat/rocket/android/ws/RocketChatWebSocketAPI.java

 package chat.rocket.android.ws;
 
-import org.json.JSONArray;
-
-import java.util.UUID;
-
 import bolts.Task;
 import chat.rocket.android.helper.OkHttpHelper;
 import chat.rocket.android_ddp.DDPClient;
 import chat.rocket.android_ddp.DDPClientCallback;
 import chat.rocket.android_ddp.DDPSubscription;
+import java.util.UUID;
+import org.json.JSONArray;
 import rx.Observable;
 
+/**
+ * API for several POST actions.
+ */
 public class RocketChatWebSocketAPI {
-    private final DDPClient mDDPClient;
-    private final String mHostName;
-
-    private RocketChatWebSocketAPI(String hostname) {
-        mDDPClient = new DDPClient(OkHttpHelper.getClientForWebSocket());
-        mHostName = hostname;
-    }
-
-    public static RocketChatWebSocketAPI create(String hostname) {
-        return new RocketChatWebSocketAPI(hostname);
-    }
+  private final DDPClient ddpClient;
+  private final String hostname;
 
-    public Task<DDPClientCallback.Connect> connect() {
-        return mDDPClient.connect("wss://" + mHostName + "/websocket");
-    }
+  private RocketChatWebSocketAPI(String hostname) {
+    ddpClient = new DDPClient(OkHttpHelper.getClientForWebSocket());
+    this.hostname = hostname;
+  }
 
-    public boolean isConnected() {
-        return mDDPClient.isConnected();
-    }
+  /**
+   * create new API client instance.
+   */
+  public static RocketChatWebSocketAPI create(String hostname) {
+    return new RocketChatWebSocketAPI(hostname);
+  }
 
-    public void close() {
-        mDDPClient.close();
-    }
+  /**
+   * Connect to WebSocket server with DDP client.
+   */
+  public Task<DDPClientCallback.Connect> connect() {
+    return ddpClient.connect("wss://" + hostname + "/websocket");
+  }
 
+  /**
+   * Returns whether DDP client is connected to WebSocket server.
+   */
+  public boolean isConnected() {
+    return ddpClient.isConnected();
+  }
 
-    public Task<DDPSubscription.Ready> subscribe(final String name, JSONArray param) {
-        return mDDPClient.sub(UUID.randomUUID().toString(), name, param);
-    }
+  /**
+   * close connection.
+   */
+  public void close() {
+    ddpClient.close();
+  }
 
-    public Task<DDPSubscription.NoSub> unsubscribe(final String id) {
-        return mDDPClient.unsub(id);
-    }
+  /**
+   * Subscribe with DDP client.
+   */
+  public Task<DDPSubscription.Ready> subscribe(final String name, JSONArray param) {
+    return ddpClient.sub(UUID.randomUUID().toString(), name, param);
+  }
 
-    public Observable<DDPSubscription.Event> getSubscriptionCallback() {
-        return mDDPClient.getSubscriptionCallback();
-    }
+  /**
+   * Unsubscribe with DDP client.
+   */
+  public Task<DDPSubscription.NoSub> unsubscribe(final String subscriptionId) {
+    return ddpClient.unsub(subscriptionId);
+  }
 
+  /**
+   * Returns Observable for handling DDP subscription.
+   */
+  public Observable<DDPSubscription.Event> getSubscriptionCallback() {
+    return ddpClient.getSubscriptionCallback();
+  }
 }

app/src/main/res/drawable/ic_arrow_forward_white_24dp.xml

 <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="#FFFFFFFF"
-        android:pathData="M12,4l-1.41,1.41L16.17,11H4v2h12.17l-5.58,5.59L12,20l8,-8z"/>
+    android:height="24dp"
+    android:viewportHeight="24.0"
+    android:viewportWidth="24.0"
+    android:width="24dp">
+  <path
+      android:fillColor="#FFFFFFFF"
+      android:pathData="M12,4l-1.41,1.41L16.17,11H4v2h12.17l-5.58,5.59L12,20l8,-8z"/>
 </vector>

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

 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <!--item android:state_enabled="false" android:color="@color/textColorLink" /-->
-    <item android:color="@color/textColorLink" />
+  <!--item android:state_enabled="false" android:color="@color/textColorLink" /-->
+  <item android:color="@color/textColorLink"/>
 </selector>
\ No newline at end of file

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

 <?xml version="1.0" encoding="utf-8"?>
-<shape android:shape="oval" xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="@color/userstatus_away"/>
-    <stroke android:width="1dp" android:color="@color/userstatus_away_outline" />
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+  <solid android:color="@color/userstatus_away"/>
+  <stroke
+      android:color="@color/userstatus_away_outline"
+      android:width="1dp"/>
 </shape>

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

 <?xml version="1.0" encoding="utf-8"?>
-<shape android:shape="oval" xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="@color/userstatus_busy"/>
-    <stroke android:width="1dp" android:color="@color/userstatus_busy_outline" />
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+  <solid android:color="@color/userstatus_busy"/>
+  <stroke
+      android:color="@color/userstatus_busy_outline"
+      android:width="1dp"/>
 </shape>

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

 <?xml version="1.0" encoding="utf-8"?>
-<shape android:shape="oval" xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="@color/userstatus_offline"/>
-    <stroke android:width="1dp" android:color="@color/userstatus_offline_outline" />
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+  <solid android:color="@color/userstatus_offline"/>
+  <stroke
+      android:color="@color/userstatus_offline_outline"
+      android:width="1dp"/>
 </shape>

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

 <?xml version="1.0" encoding="utf-8"?>
-<shape android:shape="oval" xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="@color/userstatus_online"/>
-    <stroke android:width="1dp" android:color="@color/userstatus_online_outline" />
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+  <solid android:color="@color/userstatus_online"/>
+  <stroke
+      android:color="@color/userstatus_online_outline"
+      android:width="1dp"/>
 </shape>

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

 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="oval">
-    <solid android:color="@android:color/white"/>
+  <solid android:color="@android:color/white"/>
 </shape>

app/src/main/res/layout-w720dp/activity_main.xml

 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    >
 
-    <include layout="@layout/sidebar" />
+  <include layout="@layout/sidebar"/>
 
-    <android.support.design.widget.CoordinatorLayout
+  <android.support.design.widget.CoordinatorLayout
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      >
+
+    <android.support.design.widget.AppBarLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_height="wrap_content"
+        >
 
-        <android.support.design.widget.AppBarLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-            <android.support.v7.widget.Toolbar
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
-                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
-                app:title="@string/app_name"/>
-        </android.support.design.widget.AppBarLayout>
+      <android.support.v7.widget.Toolbar
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+          app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
+          app:title="@string/app_name"
+          />
+    </android.support.design.widget.AppBarLayout>
 
-        <FrameLayout
-            android:id="@+id/activity_main_container"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:background="@color/white"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior">
-        </FrameLayout>
+    <FrameLayout
+        android:id="@+id/activity_main_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/white"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        ></FrameLayout>
 
-    </android.support.design.widget.CoordinatorLayout>
+  </android.support.design.widget.CoordinatorLayout>
 </LinearLayout>
\ No newline at end of file

app/src/main/res/layout/activity_main.xml

 <?xml version="1.0" encoding="utf-8"?>
-<android.support.v4.widget.SlidingPaneLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.v4.widget.SlidingPaneLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    >
 
-    <include layout="@layout/sidebar" />
+  <include layout="@layout/sidebar"/>
 
-    <android.support.design.widget.CoordinatorLayout
+  <android.support.design.widget.CoordinatorLayout
+      android:layout_width="match_parent"
+      android:layout_height="match_parent"
+      >
+
+    <android.support.design.widget.AppBarLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_height="wrap_content"
+        >
 
-        <android.support.design.widget.AppBarLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-            <android.support.v7.widget.Toolbar
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
-                app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
-                app:title="@string/app_name"/>
-        </android.support.design.widget.AppBarLayout>
+      <android.support.v7.widget.Toolbar
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+          app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
+          app:title="@string/app_name"
+          />
+    </android.support.design.widget.AppBarLayout>
 
-        <FrameLayout
-            android:id="@+id/activity_main_container"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:background="@color/white"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior">
-        </FrameLayout>
+    <FrameLayout
+        android:id="@+id/activity_main_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/white"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        ></FrameLayout>
 
-    </android.support.design.widget.CoordinatorLayout>
+  </android.support.design.widget.CoordinatorLayout>
 </android.support.v4.widget.SlidingPaneLayout>
\ No newline at end of file

app/src/main/res/layout/avatar_container_large.xml

 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="@dimen/avatar_image_size_large" android:layout_height="@dimen/avatar_image_size_large">
+    android:layout_width="@dimen/avatar_image_size_large"
+    android:layout_height="@dimen/avatar_image_size_large"
+    >
 
-    <FrameLayout
-        android:id="@+id/avatar_color"
-        android:layout_width="@dimen/avatar_image_size_large"
-        android:layout_height="@dimen/avatar_image_size_large"
-        android:layout_gravity="center">
-        <TextView
-            android:id="@+id/avatar_initials"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textSize="@dimen/avatar_text_size_large"
-            android:layout_gravity="center"/>
-    </FrameLayout>
+  <FrameLayout
+      android:id="@+id/avatar_color"
+      android:layout_width="@dimen/avatar_image_size_large"
+      android:layout_height="@dimen/avatar_image_size_large"
+      android:layout_gravity="center"
+      >
 
-    <ImageView
-        android:id="@+id/avatar_img"
-        android:layout_width="@dimen/avatar_image_size_large"
-        android:layout_height="@dimen/avatar_image_size_large"
-        android:src="@drawable/ic_default_avatar"
-        android:scaleType="centerInside"/>
+    <TextView
+        android:id="@+id/avatar_initials"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:textSize="@dimen/avatar_text_size_large"
+        />
+  </FrameLayout>
+
+  <ImageView
+      android:id="@+id/avatar_img"
+      android:layout_width="@dimen/avatar_image_size_large"
+      android:layout_height="@dimen/avatar_image_size_large"
+      android:scaleType="centerInside"
+      android:src="@drawable/ic_default_avatar"
+      />
 
 </FrameLayout>
\ No newline at end of file

app/src/main/res/layout/avatar_container_normal.xml

 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="@dimen/avatar_image_size_normal" android:layout_height="@dimen/avatar_image_size_normal">
+    android:layout_width="@dimen/avatar_image_size_normal"
+    android:layout_height="@dimen/avatar_image_size_normal"
+    >
 
-    <FrameLayout
-        android:id="@+id/avatar_color"
-        android:layout_width="@dimen/avatar_image_size_normal"
-        android:layout_height="@dimen/avatar_image_size_normal"
-        android:layout_gravity="center">
-        <TextView
-            android:id="@+id/avatar_initials"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textSize="@dimen/avatar_text_size_normal"
-            android:layout_gravity="center"/>
-    </FrameLayout>
+  <FrameLayout
+      android:id="@+id/avatar_color"
+      android:layout_width="@dimen/avatar_image_size_normal"
+      android:layout_height="@dimen/avatar_image_size_normal"
+      android:layout_gravity="center"
+      >
 
-    <ImageView
-        android:id="@+id/avatar_img"
-        android:layout_width="@dimen/avatar_image_size_normal"
-        android:layout_height="@dimen/avatar_image_size_normal"
-        android:src="@drawable/ic_default_avatar"
-        android:scaleType="centerInside"/>
+    <TextView
+        android:id="@+id/avatar_initials"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:textSize="@dimen/avatar_text_size_normal"
+        />
+  </FrameLayout>
+
+  <ImageView
+      android:id="@+id/avatar_img"
+      android:layout_width="@dimen/avatar_image_size_normal"
+      android:layout_height="@dimen/avatar_image_size_normal"
+      android:scaleType="centerInside"
+      android:src="@drawable/ic_default_avatar"
+      />
 
 </FrameLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_input_hostname.xml

 <?xml version="1.0" encoding="utf-8"?>
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:background="?attr/colorPrimaryDark">
+    android:background="?attr/colorPrimaryDark"
+    >
+
+  <LinearLayout
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_gravity="center"
+      android:background="@color/white"
+      android:minWidth="288dp"
+      android:orientation="horizontal"
+      android:padding="@dimen/margin_24"
+      >
 
     <LinearLayout
-        android:layout_width="wrap_content"
-        android:minWidth="288dp"
+        android:layout_width="0px"
         android:layout_height="wrap_content"
-        android:orientation="horizontal"
-        android:background="@color/white"
-        android:padding="@dimen/margin_24"
-        android:layout_gravity="center">
-
-        <LinearLayout
-            android:layout_width="0px"
-            android:layout_weight="1"
-            android:layout_height="wrap_content"
-            android:orientation="vertical">
-            <TextView
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:text="hostname"
-                android:textAppearance="@style/TextAppearance.AppCompat.Caption"/>
-            <EditText
-                android:id="@+id/editor_hostname"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:singleLine="true"
-                android:hint="demo.rocket.chat"
-                android:imeOptions="actionGo"
-                android:inputType="textWebEditText"/>
-        </LinearLayout>
+        android:layout_weight="1"
+        android:orientation="vertical"
+        >
 
-        <Space
-            android:layout_width="@dimen/margin_8"
-            android:layout_height="wrap_content" />
+      <TextView
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:text="hostname"
+          android:textAppearance="@style/TextAppearance.AppCompat.Caption"
+          />
 
-        <android.support.design.widget.FloatingActionButton
-            android:id="@+id/btn_connect"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            app:fabSize="mini"
-            app:srcCompat="@drawable/ic_arrow_forward_white_24dp"
-            app:elevation="2dp"
-            android:layout_gravity="end|bottom"/>
+      <EditText
+          android:id="@+id/editor_hostname"
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:hint="demo.rocket.chat"
+          android:imeOptions="actionGo"
+          android:inputType="textWebEditText"
+          android:singleLine="true"
+          />
     </LinearLayout>
+
+    <Space
+        android:layout_width="@dimen/margin_8"
+        android:layout_height="wrap_content"
+        />
+
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/btn_connect"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end|bottom"
+        app:elevation="2dp"
+        app:fabSize="mini"
+        app:srcCompat="@drawable/ic_arrow_forward_white_24dp"
+        />
+  </LinearLayout>
 </FrameLayout>
\ No newline at end of file

app/src/main/res/layout/fragment_wait_for_connection.xml

@@ -2,10 +2,12 @@
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="?attr/colorPrimaryDark">
+    android:background="?attr/colorPrimaryDark"
+    >
 
-    <chat.rocket.android.view.WaitingView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"/>
+  <chat.rocket.android.view.WaitingView
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_gravity="center"
+      />
 </FrameLayout>
\ No newline at end of file

app/src/main/res/layout/sidebar.xml

 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="288dp"
     android:layout_height="match_parent"
     android:layout_gravity="start"
     android:background="?attr/colorPrimary"
     android:orientation="vertical"
-    android:theme="@style/AppTheme.Dark">
+    android:theme="@style/AppTheme.Dark"
+    >
+
+  <LinearLayout
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:background="?attr/colorPrimaryDark"
+      android:orientation="vertical"
+      >
 
     <LinearLayout
+        android:id="@+id/user_info_container"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:orientation="vertical"
-        android:background="?attr/colorPrimaryDark">
-
-        <LinearLayout
-            android:id="@+id/user_info_container"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="horizontal"
-            android:gravity="center_vertical"
-            android:padding="@dimen/margin_16"
-            android:background="?attr/selectableItemBackground">
+        android:background="?attr/selectableItemBackground"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:padding="@dimen/margin_16"
+        >
 
-            <ImageView
-                android:id="@+id/img_userstatus"
-                android:layout_width="8dp"
-                android:layout_height="8dp"
-                android:src="@drawable/userstatus_online"/>
+      <ImageView
+          android:id="@+id/img_userstatus"
+          android:layout_width="8dp"
+          android:layout_height="8dp"
+          android:src="@drawable/userstatus_online"
+          />
 
-            <Space
-                android:layout_width="@dimen/margin_8"
-                android:layout_height="wrap_content"/>
+      <Space
+          android:layout_width="@dimen/margin_8"
+          android:layout_height="wrap_content"
+          />
 
-            <include layout="@layout/avatar_container_large"/>
+      <include layout="@layout/avatar_container_large"/>
 
-            <FrameLayout
-                android:layout_width="0px"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:layout_marginLeft="@dimen/margin_8"
-                android:layout_marginRight="@dimen/margin_8">
+      <FrameLayout
+          android:layout_width="0px"
+          android:layout_height="wrap_content"
+          android:layout_marginLeft="@dimen/margin_8"
+          android:layout_marginRight="@dimen/margin_8"
+          android:layout_weight="1"
+          >
 
-                <TextView
-                    android:id="@+id/txt_account_info"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:textSize="14sp"
-                    android:layout_gravity="center_vertical"
-                    android:text="John Doe"/>
+        <TextView
+            android:id="@+id/txt_account_info"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical"
+            android:text="John Doe"
+            android:textSize="14sp"
+            />
 
-            </FrameLayout>
+      </FrameLayout>
 
-            <chat.rocket.android.view.FontAwesomeTextView
-                android:id="@+id/img_user_action_toggle"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/fa_chevron_down"
-                android:textSize="16dp"/>
+      <chat.rocket.android.view.FontAwesomeTextView
+          android:id="@+id/img_user_action_toggle"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="@string/fa_chevron_down"
+          android:textSize="16dp"
+          />
 
-        </LinearLayout>
     </LinearLayout>
+  </LinearLayout>
 
 </LinearLayout>
\ No newline at end of file

app/src/main/res/layout/simple_screen.xml

@@ -2,6 +2,7 @@
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/content"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    >
 
 </FrameLayout>
\ No newline at end of file

app/src/main/res/values/colors.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="colorPrimary">#00426B</color>
-    <color name="colorPrimaryDark">#FF001E31</color>
-    <color name="colorAccent">#FF2D91FA</color>
-    <color name="colorAccentLight">#FF6CB1FA</color>
-    <color name="colorAccentDark">#FF287DD7</color>
-    <color name="colorAccent_a40">#662D91FA</color>
-    <color name="textColorLink">#008ce3</color>
+  <color name="colorPrimary">#00426B</color>
+  <color name="colorPrimaryDark">#FF001E31</color>
+  <color name="colorAccent">#FF2D91FA</color>
+  <color name="colorAccentLight">#FF6CB1FA</color>
+  <color name="colorAccentDark">#FF287DD7</color>
+  <color name="colorAccent_a40">#662D91FA</color>
+  <color name="textColorLink">#008ce3</color>
 
-    <color name="divider">#FFEEEEEE</color>
+  <color name="divider">#FFEEEEEE</color>
 
-    <color name="white">#FFFEFEFF</color>
+  <color name="white">#FFFEFEFF</color>
 </resources>

app/src/main/res/values/dimens.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <dimen name="avatar_image_size_normal">24dp</dimen>
-    <dimen name="avatar_image_size_large">48dp</dimen>
-    <dimen name="avatar_text_size_normal">11sp</dimen>
-    <dimen name="avatar_text_size_large">28sp</dimen>
+  <dimen name="avatar_image_size_normal">24dp</dimen>
+  <dimen name="avatar_image_size_large">48dp</dimen>
+  <dimen name="avatar_text_size_normal">11sp</dimen>
+  <dimen name="avatar_text_size_large">28sp</dimen>
 </resources>
\ No newline at end of file

app/src/main/res/values/fa_strings.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string translatable="false" name="fa_chevron_down">&#xf078;</string>
+  <string name="fa_chevron_down" translatable="false">&#xf078;</string>
 </resources>
\ No newline at end of file

app/src/main/res/values/margin_dimens.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <dimen name="margin_8">8dp</dimen>
-    <dimen name="margin_16">16dp</dimen>
-    <dimen name="margin_24">24dp</dimen>
+  <dimen name="margin_8">8dp</dimen>
+  <dimen name="margin_16">16dp</dimen>
+  <dimen name="margin_24">24dp</dimen>
 </resources>
\ No newline at end of file

app/src/main/res/values/strings.xml

 <resources>
-    <string name="app_name">Rocket.Chat.Android</string>
+  <string name="app_name">Rocket.Chat.Android</string>
 </resources>

app/src/main/res/values/styles.xml

 <resources xmlns:tools="http://schemas.android.com/tools">
 
-    <!-- Base application theme. -->
-    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
-        <item name="colorPrimary">@color/colorPrimary</item>
-        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
-        <item name="colorAccent">@color/colorAccent</item>
-
-        <item name="android:textColorLink">@drawable/selector_text_color_link</item>
-        <item name="android:listDivider">@color/divider</item>
-        <item name="colorControlActivated">@color/colorAccentDark</item>
-        <item name="android:textColorHighlight">@color/colorAccent_a40</item>
-
-        <item name="actionModeBackground">?attr/colorPrimaryDark</item>
-        <item name="android:statusBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
-        <item name="android:navigationBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
-    </style>
-
-    <style name="AppTheme.Dark" parent="Theme.AppCompat.NoActionBar">
-        <item name="colorPrimary">@color/colorPrimary</item>
-        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
-        <item name="colorAccent">@color/colorAccent</item>
-
-        <item name="android:textColorLink">@drawable/selector_text_color_link</item>
-        <item name="android:listDivider">@color/divider</item>
-        <item name="colorControlActivated">@color/colorAccentDark</item>
-        <item name="android:textColorHighlight">@color/colorAccent_a40</item>
-
-        <item name="actionModeBackground">?attr/colorPrimaryDark</item>
-        <item name="android:statusBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
-        <item name="android:navigationBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
-    </style>
-
-    <style name="AppTheme.Dialog" parent="Theme.AppCompat.Light.Dialog">
-        <item name="colorPrimary">@color/colorPrimary</item>
-        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
-        <item name="colorAccent">@color/colorAccent</item>
-
-        <item name="android:textColorLink">@drawable/selector_text_color_link</item>
-        <item name="android:listDivider">@color/divider</item>
-        <item name="colorControlActivated">@color/colorAccentDark</item>
-        <item name="android:textColorHighlight">@color/colorAccent_a40</item>
-    </style>
+  <!-- Base application theme. -->
+  <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
+    <item name="colorPrimary">@color/colorPrimary</item>
+    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+    <item name="colorAccent">@color/colorAccent</item>
+
+    <item name="android:textColorLink">@drawable/selector_text_color_link</item>
+    <item name="android:listDivider">@color/divider</item>
+    <item name="colorControlActivated">@color/colorAccentDark</item>
+    <item name="android:textColorHighlight">@color/colorAccent_a40</item>
+
+    <item name="actionModeBackground">?attr/colorPrimaryDark</item>
+    <item name="android:statusBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
+    <item name="android:navigationBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
+  </style>
+
+  <style name="AppTheme.Dark" parent="Theme.AppCompat.NoActionBar">
+    <item name="colorPrimary">@color/colorPrimary</item>
+    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+    <item name="colorAccent">@color/colorAccent</item>
+
+    <item name="android:textColorLink">@drawable/selector_text_color_link</item>
+    <item name="android:listDivider">@color/divider</item>
+    <item name="colorControlActivated">@color/colorAccentDark</item>
+    <item name="android:textColorHighlight">@color/colorAccent_a40</item>
+
+    <item name="actionModeBackground">?attr/colorPrimaryDark</item>
+    <item name="android:statusBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
+    <item name="android:navigationBarColor" tools:targetApi="21">?attr/colorPrimaryDark</item>
+  </style>
+
+  <style name="AppTheme.Dialog" parent="Theme.AppCompat.Light.Dialog">
+    <item name="colorPrimary">@color/colorPrimary</item>
+    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+    <item name="colorAccent">@color/colorAccent</item>
+
+    <item name="android:textColorLink">@drawable/selector_text_color_link</item>
+    <item name="android:listDivider">@color/divider</item>
+    <item name="colorControlActivated">@color/colorAccentDark</item>
+    <item name="android:textColorHighlight">@color/colorAccent_a40</item>
+  </style>
 </resources>

app/src/main/res/values/user_status_colors.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="userstatus_online">#35ac19</color>
-    <color name="userstatus_online_outline">#2c9210</color>
-    <color name="userstatus_away">#fcb316</color>
-    <color name="userstatus_away_outline">#e69200</color>
-    <color name="userstatus_busy">#d30230</color>
-    <color name="userstatus_busy_outline">#9f0030</color>
-    <color name="userstatus_offline">#7b7b7b</color>
-    <color name="userstatus_offline_outline">#666</color>
+  <color name="userstatus_online">#35ac19</color>
+  <color name="userstatus_online_outline">#2c9210</color>
+  <color name="userstatus_away">#fcb316</color>
+  <color name="userstatus_away_outline">#e69200</color>
+  <color name="userstatus_busy">#d30230</color>
+  <color name="userstatus_busy_outline">#9f0030</color>
+  <color name="userstatus_offline">#7b7b7b</color>
+  <color name="userstatus_offline_outline">#666</color>
 </resources>
\ No newline at end of file

app/src/main/res/values/waiting_view_attrs.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <declare-styleable name="WaitingView">
-        <attr name="dotSize" format="dimension" />
-        <attr name="dotCount" format="integer" />
-    </declare-styleable>
-    <dimen name="def_waiting_view_dot_size">16dp</dimen>
+  <declare-styleable name="WaitingView">
+    <attr format="dimension" name="dotSize"/>
+    <attr format="integer" name="dotCount"/>
+  </declare-styleable>
+  <dimen name="def_waiting_view_dot_size">16dp</dimen>
 </resources>
\ No newline at end of file

build.gradle

 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    repositories {
-        jcenter()
-        mavenCentral()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
+  repositories {
+    jcenter()
+    mavenCentral()
+  }
+  dependencies {
+    classpath 'com.android.tools.build:gradle:2.2.2'
 
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
-        classpath 'me.tatarka:gradle-retrolambda:3.3.1'
-        classpath "io.realm:realm-gradle-plugin:2.1.1"
-        classpath 'com.jakewharton.hugo:hugo-plugin:1.2.1'
-    }
+    // NOTE: Do not place your application dependencies here; they belong
+    // in the individual module build.gradle files
+    classpath 'me.tatarka:gradle-retrolambda:3.3.1'
+    classpath 'me.tatarka.retrolambda.projectlombok:lombok.ast:0.2.3.a2'
+    classpath "io.realm:realm-gradle-plugin:2.1.1"
+    classpath 'com.jakewharton.hugo:hugo-plugin:1.2.1'
+  }
+
+  // Exclude the version that the android plugin depends on.
+  configurations.classpath.exclude group: 'com.android.tools.external.lombok'
 }
 
 allprojects {
-    repositories {
-        jcenter()
-    }
+  repositories {
+    jcenter()
+  }
 }
 
 task clean(type: Delete) {
-    delete rootProject.buildDir
+  delete rootProject.buildDir
 }

config/quality/checkstyle/checkstyle-config.xml

-<?xml version="1.0"?><!DOCTYPE module PUBLIC
-    "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
-    "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
-
-<!--
-    Checkstyle configuration that checks the Google coding conventions from Google Java Style
-    that can be found at https://google.github.io/styleguide/javaguide.html.
-
-    Checkstyle is very configurable. Be sure to read the documentation at
-    http://checkstyle.sf.net (or in your downloaded distribution).
-
-    To completely disable a check, just comment it out or delete it from the file.
-
-    Authors: Max Vetrenko, Ruslan Diachenko, Roman Ivanov.
- -->
-
-<module name="Checker">
-    <property name="charset" value="UTF-8" />
-
-    <property name="severity" value="error" />
-
-    <property name="fileExtensions" value="java, properties, xml" />
-    <!-- Checks for whitespace                               -->
-    <!-- See http://checkstyle.sf.net/config_whitespace.html -->
-    <module name="FileTabCharacter">
-        <property name="eachLine" value="true" />
-    </module>
-
-    <module name="TreeWalker">
-        <module name="OuterTypeFilename" />
-        <module name="IllegalTokenText">
-            <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL" />
-            <property name="format"
-                value="\\u00(08|09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)" />
-            <property name="message" value="Avoid using corresponding octal or Unicode escape." />
-        </module>
-        <module name="AvoidEscapedUnicodeCharacters">
-            <property name="allowEscapesForControlCharacters" value="true" />
-            <property name="allowByTailComment" value="true" />
-            <property name="allowNonPrintableEscapes" value="true" />
-        </module>
-        <module name="LineLength">
-            <property name="max" value="100" />
-            <property name="ignorePattern"
-                value="^package.*|^import.*|a href|href|http://|https://|ftp://" />
-        </module>
-        <module name="AvoidStarImport" />
-        <module name="OneTopLevelClass" />
-        <module name="NoLineWrap" />
-        <module name="EmptyBlock">
-            <property name="option" value="TEXT" />
-            <property name="tokens"
-                value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH" />
-        </module>
-        <module name="NeedBraces" />
-        <module name="LeftCurly">
-            <property name="maxLineLength" value="100" />
-        </module>
-        <module name="RightCurly" />
-        <module name="RightCurly">
-            <property name="option" value="alone" />
-            <property name="tokens"
-                value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, LITERAL_DO, STATIC_INIT, INSTANCE_INIT" />
-        </module>
-        <module name="WhitespaceAround">
-            <property name="allowEmptyConstructors" value="true" />
-            <property name="allowEmptyMethods" value="true" />
-            <property name="allowEmptyTypes" value="true" />
-            <property name="allowEmptyLoops" value="true" />
-            <message key="ws.notFollowed"
-                value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)" />
-            <message key="ws.notPreceded"
-                value="WhitespaceAround: ''{0}'' is not preceded with whitespace." />
-        </module>
-        <module name="OneStatementPerLine" />
-        <module name="MultipleVariableDeclarations" />
-        <module name="ArrayTypeStyle" />
-        <module name="MissingSwitchDefault" />
-        <module name="FallThrough" />
-        <module name="UpperEll" />
-        <module name="ModifierOrder" />
-        <module name="EmptyLineSeparator">
-            <property name="allowNoEmptyLineBetweenFields" value="true" />
-        </module>
-        <module name="SeparatorWrap">
-            <property name="tokens" value="DOT" />
-            <property name="option" value="nl" />
-        </module>
-        <module name="SeparatorWrap">
-            <property name="tokens" value="COMMA" />
-            <property name="option" value="EOL" />
-        </module>
-        <module name="PackageName">
-            <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$" />
-            <message key="name.invalidPattern"
-                value="Package name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="TypeName">
-            <message key="name.invalidPattern"
-                value="Type name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="MemberName">
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$" />
-            <message key="name.invalidPattern"
-                value="Member name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="ParameterName">
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$" />
-            <message key="name.invalidPattern"
-                value="Parameter name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="CatchParameterName">
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$" />
-            <message key="name.invalidPattern"
-                value="Catch parameter name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="LocalVariableName">
-            <property name="tokens" value="VARIABLE_DEF" />
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$" />
-            <property name="allowOneCharVarInForLoop" value="true" />
-            <message key="name.invalidPattern"
-                value="Local variable name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="ClassTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)" />
-            <message key="name.invalidPattern"
-                value="Class type name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="MethodTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)" />
-            <message key="name.invalidPattern"
-                value="Method type name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="InterfaceTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)" />
-            <message key="name.invalidPattern"
-                value="Interface type name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="NoFinalizer" />
-        <module name="GenericWhitespace">
-            <message key="ws.followed"
-                value="GenericWhitespace ''{0}'' is followed by whitespace." />
-            <message key="ws.preceded"
-                value="GenericWhitespace ''{0}'' is preceded with whitespace." />
-            <message key="ws.illegalFollow"
-                value="GenericWhitespace ''{0}'' should followed by whitespace." />
-            <message key="ws.notPreceded"
-                value="GenericWhitespace ''{0}'' is not preceded with whitespace." />
-        </module>
-        <module name="Indentation">
-            <property name="basicOffset" value="2" />
-            <property name="braceAdjustment" value="0" />
-            <property name="caseIndent" value="2" />
-            <property name="throwsIndent" value="4" />
-            <property name="lineWrappingIndentation" value="4" />
-            <property name="arrayInitIndent" value="2" />
-        </module>
-        <module name="AbbreviationAsWordInName">
-            <property name="ignoreFinal" value="false" />
-            <property name="allowedAbbreviationLength" value="1" />
-        </module>
-        <module name="OverloadMethodsDeclarationOrder" />
-        <module name="VariableDeclarationUsageDistance" />
-        <module name="CustomImportOrder">
-            <property name="specialImportsRegExp" value="com.google" />
-            <property name="sortImportsInGroupAlphabetically" value="true" />
-            <property name="customImportOrderRules"
-                value="STATIC###SPECIAL_IMPORTS###THIRD_PARTY_PACKAGE###STANDARD_JAVA_PACKAGE" />
-        </module>
-        <module name="MethodParamPad" />
-        <module name="OperatorWrap">
-            <property name="option" value="NL" />
-            <property name="tokens"
-                value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR, LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR " />
-        </module>
-        <module name="AnnotationLocation">
-            <property name="tokens"
-                value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF" />
-        </module>
-        <module name="AnnotationLocation">
-            <property name="tokens" value="VARIABLE_DEF" />
-            <property name="allowSamelineMultipleAnnotations" value="true" />
-        </module>
-        <module name="NonEmptyAtclauseDescription" />
-        <module name="JavadocTagContinuationIndentation" />
-        <module name="SummaryJavadoc">
-            <property name="forbiddenSummaryFragments"
-                value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )" />
-        </module>
-        <module name="JavadocParagraph" />
-        <module name="AtclauseOrder">
-            <property name="tagOrder" value="@param, @return, @throws, @deprecated" />
-            <property name="target"
-                value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF" />
-        </module>
-        <module name="JavadocMethod">
-            <property name="scope" value="public" />
-            <property name="allowMissingParamTags" value="true" />
-            <property name="allowMissingThrowsTags" value="true" />
-            <property name="allowMissingReturnTag" value="true" />
-            <property name="minLineCount" value="2" />
-            <property name="allowedAnnotations" value="Override, Test" />
-            <property name="allowThrowsTagsForSubclasses" value="true" />
-        </module>
-        <module name="MethodName">
-            <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$" />
-            <message key="name.invalidPattern"
-                value="Method name ''{0}'' must match pattern ''{1}''." />
-        </module>
-        <module name="SingleLineJavadoc">
-            <property name="ignoreInlineTags" value="false" />
-        </module>
-        <module name="EmptyCatchBlock">
-            <property name="exceptionVariableName" value="expected" />
-        </module>
-        <module name="CommentsIndentation" />
-    </module>
-</module>
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+    "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
+    "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
+
+<!--
+    Checkstyle configuration that checks the Google coding conventions from Google Java Style
+    that can be found at https://google.github.io/styleguide/javaguide.html.
+
+    Checkstyle is very configurable. Be sure to read the documentation at
+    http://checkstyle.sf.net (or in your downloaded distribution).
+
+    To completely disable a check, just comment it out or delete it from the file.
+
+    Authors: Max Vetrenko, Ruslan Diachenko, Roman Ivanov.
+ -->
+
+<module name="Checker">
+  <property name="charset" value="UTF-8"/>
+
+  <property name="severity" value="warning"/>
+
+  <property name="fileExtensions" value="java, properties, xml"/>
+  <!-- Checks for whitespace                               -->
+  <!-- See http://checkstyle.sf.net/config_whitespace.html -->
+  <module name="FileTabCharacter">
+    <property name="eachLine" value="true"/>
+  </module>
+
+  <module name="SuppressionCommentFilter">
+    <property name="offCommentFormat" value="CHECKSTYLE:OFF (\w+)"/>
+    <property name="onCommentFormat" value="CHECKSTYLE:ON (\w+)"/>
+    <property name="checkFormat" value="$1"/>
+  </module>
+  
+  <module name="SuppressionFilter">
+    <property name="file" value="config/quality/checkstyle/checkstyle-suppressions.xml"/>
+  </module>
+
+  <module name="TreeWalker">
+    <module name="OuterTypeFilename"/>
+    <module name="IllegalTokenText">
+      <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
+      <property name="format"
+          value="\\u00(08|09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
+      <property name="message" value="Avoid using corresponding octal or Unicode escape."/>
+    </module>
+    <module name="AvoidEscapedUnicodeCharacters">
+      <property name="allowEscapesForControlCharacters" value="true"/>
+      <property name="allowByTailComment" value="true"/>
+      <property name="allowNonPrintableEscapes" value="true"/>
+    </module>
+    <module name="LineLength">
+      <property name="max" value="100"/>
+      <property name="ignorePattern"
+          value="^package.*|^import.*|a href|href|http://|https://|ftp://"/>
+    </module>
+    <module name="AvoidStarImport"/>
+    <module name="OneTopLevelClass"/>
+    <module name="NoLineWrap"/>
+    <module name="EmptyBlock">
+      <property name="option" value="TEXT"/>
+      <property name="tokens"
+          value="LITERAL_TRY, LITERAL_FINALLY, LITERAL_IF, LITERAL_ELSE, LITERAL_SWITCH"/>
+    </module>
+    <module name="NeedBraces"/>
+    <module name="LeftCurly">
+      <property name="maxLineLength" value="100"/>
+    </module>
+    <module name="RightCurly"/>
+    <module name="RightCurly">
+      <property name="option" value="alone"/>
+      <property name="tokens"
+          value="CLASS_DEF, METHOD_DEF, CTOR_DEF, LITERAL_FOR, LITERAL_WHILE, LITERAL_DO, STATIC_INIT, INSTANCE_INIT"/>
+    </module>
+    <module name="WhitespaceAround">
+      <property name="allowEmptyConstructors" value="true"/>
+      <property name="allowEmptyMethods" value="true"/>
+      <property name="allowEmptyTypes" value="true"/>
+      <property name="allowEmptyLoops" value="true"/>
+      <message key="ws.notFollowed"
+          value="WhitespaceAround: ''{0}'' is not followed by whitespace. Empty blocks may only be represented as '{}' when not part of a multi-block statement (4.1.3)"/>
+      <message key="ws.notPreceded"
+          value="WhitespaceAround: ''{0}'' is not preceded with whitespace."/>
+    </module>
+    <module name="OneStatementPerLine"/>
+    <module name="MultipleVariableDeclarations"/>
+    <module name="ArrayTypeStyle"/>
+    <module name="MissingSwitchDefault"/>
+    <module name="FallThrough"/>
+    <module name="UpperEll"/>
+    <module name="ModifierOrder"/>
+    <module name="EmptyLineSeparator">
+      <property name="allowNoEmptyLineBetweenFields" value="true"/>
+    </module>
+    <module name="SeparatorWrap">
+      <property name="tokens" value="DOT"/>
+      <property name="option" value="nl"/>
+    </module>
+    <module name="SeparatorWrap">
+      <property name="tokens" value="COMMA"/>
+      <property name="option" value="EOL"/>
+    </module>
+    <!-- TODO module name="PackageName">
+      <property name="format" value="^[a-z]+(\.[a-z][a-z0-9]*)*$"/>
+      <message key="name.invalidPattern"
+          value="Package name ''{0}'' must match pattern ''{1}''."/>
+    </module-->
+    <module name="TypeName">
+      <message key="name.invalidPattern"
+          value="Type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="MemberName">
+      <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
+      <message key="name.invalidPattern"
+          value="Member name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="ParameterName">
+      <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
+      <message key="name.invalidPattern"
+          value="Parameter name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="CatchParameterName">
+      <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
+      <message key="name.invalidPattern"
+          value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="LocalVariableName">
+      <property name="tokens" value="VARIABLE_DEF"/>
+      <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9]*$"/>
+      <property name="allowOneCharVarInForLoop" value="true"/>
+      <message key="name.invalidPattern"
+          value="Local variable name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="ClassTypeParameterName">
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern"
+          value="Class type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="MethodTypeParameterName">
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern"
+          value="Method type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="InterfaceTypeParameterName">
+      <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+      <message key="name.invalidPattern"
+          value="Interface type name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="NoFinalizer"/>
+    <module name="GenericWhitespace">
+      <message key="ws.followed"
+          value="GenericWhitespace ''{0}'' is followed by whitespace."/>
+      <message key="ws.preceded"
+          value="GenericWhitespace ''{0}'' is preceded with whitespace."/>
+      <message key="ws.illegalFollow"
+          value="GenericWhitespace ''{0}'' should followed by whitespace."/>
+      <message key="ws.notPreceded"
+          value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
+    </module>
+    <module name="Indentation">
+      <property name="basicOffset" value="2"/>
+      <property name="braceAdjustment" value="0"/>
+      <property name="caseIndent" value="2"/>
+      <property name="throwsIndent" value="4"/>
+      <property name="lineWrappingIndentation" value="4"/>
+      <property name="arrayInitIndent" value="2"/>
+    </module>
+    <module name="AbbreviationAsWordInName">
+      <property name="ignoreFinal" value="false"/>
+      <!-- TODO property name="allowedAbbreviationLength" value="1"/-->
+    </module>
+    <module name="OverloadMethodsDeclarationOrder"/>
+    <module name="VariableDeclarationUsageDistance"/>
+    <!-- TODO module name="CustomImportOrder">
+      <property name="specialImportsRegExp" value="com.google"/>
+      <property name="sortImportsInGroupAlphabetically" value="true"/>
+      <property name="customImportOrderRules"
+          value="STATIC###SPECIAL_IMPORTS###THIRD_PARTY_PACKAGE###STANDARD_JAVA_PACKAGE"/>
+    </module-->
+    <module name="MethodParamPad"/>
+    <module name="OperatorWrap">
+      <property name="option" value="NL"/>
+      <property name="tokens"
+          value="BAND, BOR, BSR, BXOR, DIV, EQUAL, GE, GT, LAND, LE, LITERAL_INSTANCEOF, LOR, LT, MINUS, MOD, NOT_EQUAL, PLUS, QUESTION, SL, SR, STAR "/>
+    </module>
+    <module name="AnnotationLocation">
+      <property name="tokens" value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF"/>
+    </module>
+    <module name="AnnotationLocation">
+      <property name="tokens" value="VARIABLE_DEF"/>
+      <property name="allowSamelineMultipleAnnotations" value="true"/>
+    </module>
+    <module name="NonEmptyAtclauseDescription"/>
+    <module name="JavadocTagContinuationIndentation"/>
+    <module name="SummaryJavadoc">
+      <property name="forbiddenSummaryFragments"
+          value="^@return the *|^This method returns |^A [{]@code [a-zA-Z0-9]+[}]( is a )"/>
+    </module>
+    <module name="JavadocParagraph"/>
+    <module name="AtclauseOrder">
+      <property name="tagOrder" value="@param, @return, @throws, @deprecated"/>
+      <property name="target"
+          value="CLASS_DEF, INTERFACE_DEF, ENUM_DEF, METHOD_DEF, CTOR_DEF, VARIABLE_DEF"/>
+    </module>
+    <module name="JavadocMethod">
+      <property name="scope" value="public"/>
+      <property name="allowMissingParamTags" value="true"/>
+      <property name="allowMissingThrowsTags" value="true"/>
+      <property name="allowMissingReturnTag" value="true"/>
+      <property name="minLineCount" value="2"/>
+      <property name="allowedAnnotations" value="Override, Test"/>
+      <property name="allowThrowsTagsForSubclasses" value="true"/>
+    </module>
+    <module name="MethodName">
+      <property name="format" value="^[a-z][a-z0-9][a-zA-Z0-9_]*$"/>
+      <message key="name.invalidPattern"
+          value="Method name ''{0}'' must match pattern ''{1}''."/>
+    </module>
+    <module name="SingleLineJavadoc">
+      <property name="ignoreInlineTags" value="false"/>
+    </module>
+    <module name="EmptyCatchBlock">
+      <property name="exceptionVariableName" value="expected"/>
+    </module>
+    <module name="CommentsIndentation"/>
+  </module>
+</module>
\ No newline at end of file

config/quality/checkstyle/checkstyle-suppressions.xml

+<?xml version="1.0"?>
+<!DOCTYPE suppressions PUBLIC
+  "-//Puppy Crawl//DTD Suppressions 1.1//EN"
+  "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+<suppressions>
+  <!-- suppress some checks for classes extending RealmObject -->
+  <suppress checks="JavadocMethod" files="chat[\\/]rocket[\\/]android[\\/]model"/>
+</suppressions>
\ No newline at end of file

config/quality/findbugs/android-exclude-filter.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <FindBugsFilter>
-    <Match>
-        <Class name="~.*\.R\$.*"/>
-    </Match>
-    <Match>
-        <Class name="~.*\.Manifest\$.*"/>
-    </Match>
-    <!-- All bugs in test classes, except for JUnit-specific bugs -->
-    <Match>
-        <Class name="~.*\.*Test" />
-        <Not>
-            <Bug code="IJU" />
-        </Not>
-    </Match>
+  <Match>
+    <Class name="~.*\.R\$.*"/>
+  </Match>
+  <Match>
+    <Class name="~.*\.Manifest\$.*"/>
+  </Match>
+  <!-- All bugs in test classes, except for JUnit-specific bugs -->
+  <Match>
+    <Class name="~.*\.*Test"/>
+    <Not>
+      <Bug code="IJU"/>
+    </Not>
+  </Match>
 
 </FindBugsFilter>
\ No newline at end of file

config/quality/pmd/pmd-ruleset.xml

@@ -4,25 +4,25 @@
     xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd"
     xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd">
 
-    <description>Custom ruleset for Rocket.Chat.Android application</description>
+  <description>Custom ruleset for Rocket.Chat.Android application</description>
 
-    <exclude-pattern>.*/R.java</exclude-pattern>
-    <exclude-pattern>.*/gen/.*</exclude-pattern>
+  <exclude-pattern>.*/R.java</exclude-pattern>
+  <exclude-pattern>.*/gen/.*</exclude-pattern>
 
-    <rule ref="rulesets/java/android.xml" />
-    <rule ref="rulesets/java/clone.xml" />
-    <rule ref="rulesets/java/finalizers.xml" />
-    <rule ref="rulesets/java/imports.xml">
-        <!-- Espresso is designed this way !-->
-        <exclude name="TooManyStaticImports" />
-    </rule>
-    <rule ref="rulesets/java/basic.xml" />
-    <rule ref="rulesets/java/naming.xml">
-        <!--<exclude name="AbstractNaming" />-->
-        <exclude name="LongVariable" />
-        <!--<exclude name="ShortMethodName" />-->
-        <!--<exclude name="ShortVariable" />-->
-        <!--<exclude name="ShortClassName" />-->
-        <!--<exclude name="VariableNamingConventions" />-->
-    </rule>
+  <rule ref="rulesets/java/android.xml"/>
+  <rule ref="rulesets/java/clone.xml"/>
+  <rule ref="rulesets/java/finalizers.xml"/>
+  <rule ref="rulesets/java/imports.xml">
+    <!-- Espresso is designed this way !-->
+    <exclude name="TooManyStaticImports"/>
+  </rule>
+  <rule ref="rulesets/java/basic.xml"/>
+  <rule ref="rulesets/java/naming.xml">
+    <!--<exclude name="AbstractNaming" />-->
+    <exclude name="LongVariable"/>
+    <!--exclude name="ShortMethodName" /-->
+    <!--exclude name="ShortVariable" /-->
+    <!--<exclude name="ShortClassName" />-->
+    <!--<exclude name="VariableNamingConventions" />-->
+  </rule>
 </ruleset>
\ No newline at end of file

config/quality/quality.gradle

@@ -7,15 +7,14 @@
  * - pmd
  *
  * The three tasks above are added as dependencies of the check task so running check will
- * run all of them.
- */
+ * run all of them.*/
 
 apply plugin: 'checkstyle'
 apply plugin: 'findbugs'
 apply plugin: 'pmd'
 
 dependencies {
-    checkstyle 'com.puppycrawl.tools:checkstyle:7.2'
+  checkstyle 'com.puppycrawl.tools:checkstyle:7.2'
 }
 
 def qualityConfigDir = "$project.rootDir/config/quality";
@@ -24,67 +23,67 @@ def reportsDir = "$project.buildDir/reports"
 check.dependsOn 'checkstyle', 'findbugs', 'pmd'
 
 task checkstyle(type: Checkstyle, group: 'Verification', description: 'Runs code style checks') {
-    configFile file("$qualityConfigDir/checkstyle/checkstyle-config.xml")
-    source 'src'
-    include '**/*.java'
-
-    reports {
-        xml.enabled = true
-        xml {
-            destination "$reportsDir/checkstyle/checkstyle.xml"
-        }
+  configFile file("$qualityConfigDir/checkstyle/checkstyle-config.xml")
+  source 'src'
+  include '**/*.java'
+
+  reports {
+    xml.enabled = true
+    xml {
+      destination "$reportsDir/checkstyle/checkstyle.xml"
     }
+  }
 
-    classpath = files( )
+  classpath = files()
 }
 
 task findbugs(type: FindBugs,
-        group: 'Verification',
-        description: 'Inspect java bytecode for bugs',
-        dependsOn: ['compileDebugSources','compileReleaseSources']) {
-
-    ignoreFailures = false
-    effort = "max"
-    reportLevel = "high"
-    excludeFilter = new File("$qualityConfigDir/findbugs/android-exclude-filter.xml")
-    classes = files("$project.rootDir/app/build/intermediates/classes")
-
-    source 'src'
-    include '**/*.java'
-    exclude '**/gen/**'
-
-    reports {
-        xml.enabled = false
-        html.enabled = true
-        xml {
-            destination "$reportsDir/findbugs/findbugs.xml"
-        }
-        html {
-            destination "$reportsDir/findbugs/findbugs.html"
-        }
+    group: 'Verification',
+    description: 'Inspect java bytecode for bugs',
+    dependsOn: ['compileDebugSources', 'compileReleaseSources']) {
+
+  ignoreFailures = false
+  effort = "max"
+  reportLevel = "high"
+  excludeFilter = new File("$qualityConfigDir/findbugs/android-exclude-filter.xml")
+  classes = files("$project.rootDir/app/build/intermediates/classes")
+
+  source 'src'
+  include '**/*.java'
+  exclude '**/gen/**'
+
+  reports {
+    xml.enabled = false
+    html.enabled = true
+    xml {
+      destination "$reportsDir/findbugs/findbugs.xml"
     }
+    html {
+      destination "$reportsDir/findbugs/findbugs.html"
+    }
+  }
 
-    classpath = files()
+  classpath = files()
 }
 
 
 task pmd(type: Pmd, group: 'Verification', description: 'Inspect sourcecode for bugs') {
-    ruleSetFiles = files("$qualityConfigDir/pmd/pmd-ruleset.xml")
-    ignoreFailures = false
-    ruleSets = []
-
-    source 'src'
-    include '**/*.java'
-    exclude '**/gen/**'
-
-    reports {
-        xml.enabled = true
-        html.enabled = true
-        xml {
-            destination "$reportsDir/pmd/pmd.xml"
-        }
-        html {
-            destination "$reportsDir/pmd/pmd.html"
-        }
+  ruleSetFiles = files("$qualityConfigDir/pmd/pmd-ruleset.xml")
+  ignoreFailures = false
+  ruleSets = []
+
+  source 'src'
+  include '**/*.java'
+  exclude '**/gen/**'
+
+  reports {
+    xml.enabled = true
+    html.enabled = true
+    xml {
+      destination "$reportsDir/pmd/pmd.xml"
+    }
+    html {
+      destination "$reportsDir/pmd/pmd.html"
     }
+  }
 }

gradle.properties

 # Project-wide Gradle settings.
-
 # IDE (e.g. Android Studio) users:
 # Gradle settings configured through the IDE *will override*
 # any settings specified in this file.
-
 # For more details on how to configure your build environment visit
 # http://www.gradle.org/docs/current/userguide/build_environment.html
-
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
 org.gradle.jvmargs=-Xmx1536m
-
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects