Merge branch 'release/0.10.0'

CHANGES.md

@@ -1,3 +1,20 @@
+Changes in RiotX 0.10.0 (2019-12-10)
+===================================================
+
+Features ✨:
+ - Breadcrumbs: switch from one room to another quickly (#571)
+
+Improvements 🙌:
+ - Support entering a RiotWeb client URL instead of the homeserver URL during connection (#744)
+
+Other changes:
+ - Add reason for all membership events (https://github.com/matrix-org/matrix-doc/pull/2367)
+
+Bugfix 🐛:
+ - When automardown is ON, pills are sent as MD in body (#739)
+ - "ban" event are not rendered correctly (#716)
+ - Fix crash when rotating screen in Room timeline
+
 Changes in RiotX 0.9.1 (2019-12-05)
 ===================================================
 

docs/signup.md

@@ -17,7 +17,7 @@ Client request the sign-up flows, once the homeserver is chosen by the user and
 }
 ```
 
-We get the flows with a 401, which also means the the registration is possible on this homeserver.
+We get the flows with a 401, which also means that the registration is possible on this homeserver.
 
 ```json
 {

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxRoom.kt

@@ -57,8 +57,9 @@ class RxRoom(private val room: Room) {
         room.loadRoomMembersIfNeeded(MatrixCallbackSingle(it)).toSingle(it)
     }
 
-    fun joinRoom(viaServers: List<String> = emptyList()): Single<Unit> = Single.create {
-        room.join(viaServers, MatrixCallbackSingle(it)).toSingle(it)
+    fun joinRoom(reason: String? = null,
+                 viaServers: List<String> = emptyList()): Single<Unit> = Single.create {
+        room.join(reason, viaServers, MatrixCallbackSingle(it)).toSingle(it)
     }
 
     fun liveEventReadReceipts(eventId: String): Observable<List<ReadReceipt>> {

matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxSession.kt

@@ -38,6 +38,10 @@ class RxSession(private val session: Session) {
         return session.liveGroupSummaries().asObservable()
     }
 
+    fun liveBreadcrumbs(): Observable<List<RoomSummary>> {
+        return session.liveBreadcrumbs().asObservable()
+    }
+
     fun liveSyncState(): Observable<SyncState> {
         return session.syncState().asObservable()
     }
@@ -72,8 +76,10 @@ class RxSession(private val session: Session) {
         session.searchUsersDirectory(search, limit, excludedUserIds, MatrixCallbackSingle(it)).toSingle(it)
     }
 
-    fun joinRoom(roomId: String, viaServers: List<String> = emptyList()): Single<Unit> = Single.create {
-        session.joinRoom(roomId, viaServers, MatrixCallbackSingle(it)).toSingle(it)
+    fun joinRoom(roomId: String,
+                 reason: String? = null,
+                 viaServers: List<String> = emptyList()): Single<Unit> = Single.create {
+        session.joinRoom(roomId, reason, viaServers, MatrixCallbackSingle(it)).toSingle(it)
     }
 }
 

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/auth/data/LoginFlowResult.kt

@@ -22,7 +22,8 @@ import im.vector.matrix.android.internal.auth.data.LoginFlowResponse
 sealed class LoginFlowResult {
     data class Success(
             val loginFlowResponse: LoginFlowResponse,
-            val isLoginAndRegistrationSupported: Boolean
+            val isLoginAndRegistrationSupported: Boolean,
+            val homeServerUrl: String
     ) : LoginFlowResult()
 
     object OutdatedHomeserver : LoginFlowResult()

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/failure/Failure.kt

@@ -36,7 +36,7 @@ sealed class Failure(cause: Throwable? = null) : Throwable(cause = cause) {
     data class ServerError(val error: MatrixError, val httpCode: Int) : Failure(RuntimeException(error.toString()))
     object SuccessError : Failure(RuntimeException(RuntimeException("SuccessResult is false")))
     // When server send an error, but it cannot be interpreted as a MatrixError
-    data class OtherServerError(val errorBody: String, val httpCode: Int) : Failure(RuntimeException(errorBody))
+    data class OtherServerError(val errorBody: String, val httpCode: Int) : Failure(RuntimeException("HTTP $httpCode: $errorBody"))
 
     data class RegistrationFlowError(val registrationFlowResponse: RegistrationFlowResponse) : Failure(RuntimeException(registrationFlowResponse.toString()))
 

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/content/ContentUploadStateTracker.kt

@@ -22,6 +22,8 @@ interface ContentUploadStateTracker {
 
     fun untrack(key: String, updateListener: UpdateListener)
 
+    fun clear()
+
     interface UpdateListener {
         fun onUpdate(state: State)
     }

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/RoomDirectoryService.kt

@@ -30,12 +30,16 @@ interface RoomDirectoryService {
     /**
      * Get rooms from directory
      */
-    fun getPublicRooms(server: String?, publicRoomsParams: PublicRoomsParams, callback: MatrixCallback<PublicRoomsResponse>): Cancelable
+    fun getPublicRooms(server: String?,
+                       publicRoomsParams: PublicRoomsParams,
+                       callback: MatrixCallback<PublicRoomsResponse>): Cancelable
 
     /**
      * Join a room by id
      */
-    fun joinRoom(roomId: String, callback: MatrixCallback<Unit>): Cancelable
+    fun joinRoom(roomId: String,
+                 reason: String? = null,
+                 callback: MatrixCallback<Unit>): Cancelable
 
     /**
      * Fetches the overall metadata about protocols supported by the homeserver.

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/RoomService.kt

@@ -30,14 +30,17 @@ interface RoomService {
     /**
      * Create a room asynchronously
      */
-    fun createRoom(createRoomParams: CreateRoomParams, callback: MatrixCallback<String>): Cancelable
+    fun createRoom(createRoomParams: CreateRoomParams,
+                   callback: MatrixCallback<String>): Cancelable
 
     /**
      * Join a room by id
      * @param roomId the roomId of the room to join
+     * @param reason optional reason for joining the room
      * @param viaServers the servers to attempt to join the room through. One of the servers must be participating in the room.
      */
     fun joinRoom(roomId: String,
+                 reason: String? = null,
                  viaServers: List<String> = emptyList(),
                  callback: MatrixCallback<Unit>): Cancelable
 
@@ -54,8 +57,21 @@ interface RoomService {
      */
     fun liveRoomSummaries(): LiveData<List<RoomSummary>>
 
+    /**
+     * Get a live list of Breadcrumbs
+     * @return the [LiveData] of [RoomSummary]
+     */
+    fun liveBreadcrumbs(): LiveData<List<RoomSummary>>
+
+    /**
+     * Inform the Matrix SDK that a room is displayed.
+     * The SDK will update the breadcrumbs in the user account data
+     */
+    fun onRoomDisplayed(roomId: String): Cancelable
+
     /**
      * Mark all rooms as read
      */
-    fun markAllAsRead(roomIds: List<String>, callback: MatrixCallback<Unit>): Cancelable
+    fun markAllAsRead(roomIds: List<String>,
+                      callback: MatrixCallback<Unit>): Cancelable
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/members/MembershipService.kt

@@ -52,16 +52,21 @@ interface MembershipService {
     /**
      * Invite a user in the room
      */
-    fun invite(userId: String, callback: MatrixCallback<Unit>): Cancelable
+    fun invite(userId: String,
+               reason: String? = null,
+               callback: MatrixCallback<Unit>): Cancelable
 
     /**
      * Join the room, or accept an invitation.
      */
 
-    fun join(viaServers: List<String> = emptyList(), callback: MatrixCallback<Unit>): Cancelable
+    fun join(reason: String? = null,
+             viaServers: List<String> = emptyList(),
+             callback: MatrixCallback<Unit>): Cancelable
 
     /**
      * Leave the room, or reject an invitation.
      */
-    fun leave(callback: MatrixCallback<Unit>): Cancelable
+    fun leave(reason: String? = null,
+              callback: MatrixCallback<Unit>): Cancelable
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/RoomMember.kt

@@ -26,9 +26,13 @@ import im.vector.matrix.android.api.session.events.model.UnsignedData
 @JsonClass(generateAdapter = true)
 data class RoomMember(
         @Json(name = "membership") val membership: Membership,
+        @Json(name = "reason") val reason: String? = null,
         @Json(name = "displayname") val displayName: String? = null,
         @Json(name = "avatar_url") val avatarUrl: String? = null,
         @Json(name = "is_direct") val isDirect: Boolean = false,
         @Json(name = "third_party_invite") val thirdPartyInvite: Invite? = null,
         @Json(name = "unsigned") val unsignedData: UnsignedData? = null
-)
+) {
+    val safeReason
+        get() = reason?.takeIf { it.isNotBlank() }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/relation/RelationService.kt

@@ -50,6 +50,7 @@ interface RelationService {
 
     /**
      * Sends a reaction (emoji) to the targetedEvent.
+     * It has no effect if the user has already added the same reaction to the event.
      * @param targetEventId the id of the event being reacted
      * @param reaction the reaction (preferably emoji)
      */

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/auth/AuthAPI.kt

@@ -20,6 +20,7 @@ import im.vector.matrix.android.api.auth.data.Credentials
 import im.vector.matrix.android.api.auth.data.Versions
 import im.vector.matrix.android.internal.auth.data.LoginFlowResponse
 import im.vector.matrix.android.internal.auth.data.PasswordLoginParams
+import im.vector.matrix.android.internal.auth.data.RiotConfig
 import im.vector.matrix.android.internal.auth.login.ResetPasswordMailConfirmed
 import im.vector.matrix.android.internal.auth.registration.*
 import im.vector.matrix.android.internal.network.NetworkConstants
@@ -31,6 +32,12 @@ import retrofit2.http.*
  */
 internal interface AuthAPI {
 
+    /**
+     * Get a Riot config file
+     */
+    @GET("config.json")
+    fun getRiotConfig(): Call<RiotConfig>
+
     /**
      * Get the version information of the homeserver
      */

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/auth/DefaultAuthenticationService.kt

@@ -16,16 +16,19 @@
 
 package im.vector.matrix.android.internal.auth
 
+import android.net.Uri
 import dagger.Lazy
 import im.vector.matrix.android.api.MatrixCallback
 import im.vector.matrix.android.api.auth.AuthenticationService
 import im.vector.matrix.android.api.auth.data.*
 import im.vector.matrix.android.api.auth.login.LoginWizard
 import im.vector.matrix.android.api.auth.registration.RegistrationWizard
+import im.vector.matrix.android.api.failure.Failure
 import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.util.Cancelable
 import im.vector.matrix.android.internal.SessionManager
 import im.vector.matrix.android.internal.auth.data.LoginFlowResponse
+import im.vector.matrix.android.internal.auth.data.RiotConfig
 import im.vector.matrix.android.internal.auth.db.PendingSessionData
 import im.vector.matrix.android.internal.auth.login.DefaultLoginWizard
 import im.vector.matrix.android.internal.auth.registration.DefaultRegistrationWizard
@@ -40,6 +43,7 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import okhttp3.OkHttpClient
 import javax.inject.Inject
+import javax.net.ssl.HttpsURLConnection
 
 internal class DefaultAuthenticationService @Inject constructor(@Unauthenticated
                                                                 private val okHttpClient: Lazy<OkHttpClient>,
@@ -84,7 +88,12 @@ internal class DefaultAuthenticationService @Inject constructor(@Unauthenticated
                     {
                         if (it is LoginFlowResult.Success) {
                             // The homeserver exists and up to date, keep the config
-                            pendingSessionData = PendingSessionData(homeServerConnectionConfig)
+                            // Homeserver url may have been changed, if it was a Riot url
+                            val alteredHomeServerConnectionConfig = homeServerConnectionConfig.copy(
+                                    homeServerUri = Uri.parse(it.homeServerUrl)
+                            )
+
+                            pendingSessionData = PendingSessionData(alteredHomeServerConnectionConfig)
                                     .also { data -> pendingSessionStore.savePendingSessionData(data) }
                         }
                         callback.onSuccess(it)
@@ -97,20 +106,71 @@ internal class DefaultAuthenticationService @Inject constructor(@Unauthenticated
                 .toCancelable()
     }
 
-    private suspend fun getLoginFlowInternal(homeServerConnectionConfig: HomeServerConnectionConfig) = withContext(coroutineDispatchers.io) {
+    private suspend fun getLoginFlowInternal(homeServerConnectionConfig: HomeServerConnectionConfig): LoginFlowResult {
+        return withContext(coroutineDispatchers.io) {
             val authAPI = buildAuthAPI(homeServerConnectionConfig)
 
             // First check the homeserver version
-        val versions = executeRequest<Versions> {
+            runCatching {
+                executeRequest<Versions> {
                     apiCall = authAPI.versions()
                 }
+            }
+                    .map { versions ->
+                        // Ok, it seems that the homeserver url is valid
+                        getLoginFlowResult(authAPI, versions, homeServerConnectionConfig.homeServerUri.toString())
+                    }
+                    .fold(
+                            {
+                                it
+                            },
+                            {
+                                if (it is Failure.OtherServerError
+                                        && it.httpCode == HttpsURLConnection.HTTP_NOT_FOUND /* 404 */) {
+                                    // It's maybe a Riot url?
+                                    getRiotLoginFlowInternal(homeServerConnectionConfig)
+                                } else {
+                                    throw it
+                                }
+                            }
+                    )
+        }
+    }
 
-        if (versions.isSupportedBySdk()) {
+    private suspend fun getRiotLoginFlowInternal(homeServerConnectionConfig: HomeServerConnectionConfig): LoginFlowResult {
+        val authAPI = buildAuthAPI(homeServerConnectionConfig)
+
+        // Ok, try to get the config.json file of a RiotWeb client
+        val riotConfig = executeRequest<RiotConfig> {
+            apiCall = authAPI.getRiotConfig()
+        }
+
+        if (riotConfig.defaultHomeServerUrl?.isNotBlank() == true) {
+            // Ok, good sign, we got a default hs url
+            val newHomeServerConnectionConfig = homeServerConnectionConfig.copy(
+                    homeServerUri = Uri.parse(riotConfig.defaultHomeServerUrl)
+            )
+
+            val newAuthAPI = buildAuthAPI(newHomeServerConnectionConfig)
+
+            val versions = executeRequest<Versions> {
+                apiCall = newAuthAPI.versions()
+            }
+
+            return getLoginFlowResult(newAuthAPI, versions, riotConfig.defaultHomeServerUrl)
+        } else {
+            // Config exists, but there is no default homeserver url (ex: https://riot.im/app)
+            throw Failure.OtherServerError("", HttpsURLConnection.HTTP_NOT_FOUND /* 404 */)
+        }
+    }
+
+    private suspend fun getLoginFlowResult(authAPI: AuthAPI, versions: Versions, homeServerUrl: String): LoginFlowResult {
+        return if (versions.isSupportedBySdk()) {
             // Get the login flow
             val loginFlowResponse = executeRequest<LoginFlowResponse> {
                 apiCall = authAPI.getLoginFlows()
             }
-            LoginFlowResult.Success(loginFlowResponse, versions.isLoginAndRegistrationSupportedBySdk())
+            LoginFlowResult.Success(loginFlowResponse, versions.isLoginAndRegistrationSupportedBySdk(), homeServerUrl)
         } else {
             // Not supported
             LoginFlowResult.OutdatedHomeserver

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/auth/data/RiotConfig.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.auth.data
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+
+@JsonClass(generateAdapter = true)
+data class RiotConfig(
+        // There are plenty of other elements in the file config.json of a RiotWeb client, but for the moment only one is interesting
+        // Ex: "brand", "branding", etc.
+        @Json(name = "default_hs_url")
+        val defaultHomeServerUrl: String?
+)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/store/db/query/CryptoRoomEntityQueries.kt

@@ -19,16 +19,14 @@ package im.vector.matrix.android.internal.crypto.store.db.query
 import im.vector.matrix.android.internal.crypto.store.db.model.CryptoRoomEntity
 import im.vector.matrix.android.internal.crypto.store.db.model.CryptoRoomEntityFields
 import io.realm.Realm
+import io.realm.kotlin.createObject
 import io.realm.kotlin.where
 
 /**
  * Get or create a room
  */
 internal fun CryptoRoomEntity.Companion.getOrCreate(realm: Realm, roomId: String): CryptoRoomEntity {
-    return getById(realm, roomId)
-            ?: let {
-                realm.createObject(CryptoRoomEntity::class.java, roomId)
-            }
+    return getById(realm, roomId) ?: realm.createObject(roomId)
 }
 
 /**

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/store/db/query/DeviceInfoEntityQueries.kt

@@ -20,18 +20,20 @@ import im.vector.matrix.android.internal.crypto.store.db.model.DeviceInfoEntity
 import im.vector.matrix.android.internal.crypto.store.db.model.DeviceInfoEntityFields
 import im.vector.matrix.android.internal.crypto.store.db.model.createPrimaryKey
 import io.realm.Realm
+import io.realm.kotlin.createObject
 import io.realm.kotlin.where
 
 /**
  * Get or create a device info
  */
 internal fun DeviceInfoEntity.Companion.getOrCreate(realm: Realm, userId: String, deviceId: String): DeviceInfoEntity {
+    val key = DeviceInfoEntity.createPrimaryKey(userId, deviceId)
+
     return realm.where<DeviceInfoEntity>()
-            .equalTo(DeviceInfoEntityFields.PRIMARY_KEY, DeviceInfoEntity.createPrimaryKey(userId, deviceId))
+            .equalTo(DeviceInfoEntityFields.PRIMARY_KEY, key)
             .findFirst()
-            ?: let {
-                realm.createObject(DeviceInfoEntity::class.java, DeviceInfoEntity.createPrimaryKey(userId, deviceId)).apply {
+            ?: realm.createObject<DeviceInfoEntity>(key)
+                    .apply {
                         this.deviceId = deviceId
                     }
-            }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/crypto/store/db/query/UserEntitiesQueries.kt

@@ -19,6 +19,7 @@ package im.vector.matrix.android.internal.crypto.store.db.query
 import im.vector.matrix.android.internal.crypto.store.db.model.UserEntity
 import im.vector.matrix.android.internal.crypto.store.db.model.UserEntityFields
 import io.realm.Realm
+import io.realm.kotlin.createObject
 import io.realm.kotlin.where
 
 /**
@@ -28,9 +29,7 @@ internal fun UserEntity.Companion.getOrCreate(realm: Realm, userId: String): Use
     return realm.where<UserEntity>()
             .equalTo(UserEntityFields.USER_ID, userId)
             .findFirst()
-            ?: let {
-                realm.createObject(UserEntity::class.java, userId)
-            }
+            ?: realm.createObject(userId)
 }
 
 /**

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/model/BreadcrumbsEntity.kt

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.database.model
+
+import io.realm.RealmList
+import io.realm.RealmObject
+
+internal open class BreadcrumbsEntity(
+        var recentRoomIds: RealmList<String> = RealmList()
+) : RealmObject() {
+
+    companion object
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/model/RoomSummaryEntity.kt

@@ -38,7 +38,8 @@ internal open class RoomSummaryEntity(@PrimaryKey var roomId: String = "",
                                       var readMarkerId: String? = null,
                                       var hasUnreadMessages: Boolean = false,
                                       var tags: RealmList<RoomTagEntity> = RealmList(),
-                                      var userDrafts: UserDraftsEntity? = null
+                                      var userDrafts: UserDraftsEntity? = null,
+                                      var breadcrumbsIndex: Int = NOT_IN_BREADCRUMBS
 ) : RealmObject() {
 
     private var membershipStr: String = Membership.NONE.name
@@ -59,5 +60,7 @@ internal open class RoomSummaryEntity(@PrimaryKey var roomId: String = "",
             versioningStateStr = value.name
         }
 
-    companion object
+    companion object {
+        const val NOT_IN_BREADCRUMBS = -1
+    }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/model/SessionRealmModule.kt

@@ -36,6 +36,7 @@ import io.realm.annotations.RealmModule
                  SyncEntity::class,
                  UserEntity::class,
                  IgnoredUserEntity::class,
+                 BreadcrumbsEntity::class,
                  EventAnnotationsSummaryEntity::class,
                  ReactionAggregatedSummaryEntity::class,
                  EditAggregatedSummaryEntity::class,

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/BreadcrumbsEntityQuery.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.database.query
+
+import im.vector.matrix.android.internal.database.model.BreadcrumbsEntity
+import io.realm.Realm
+import io.realm.kotlin.createObject
+import io.realm.kotlin.where
+
+internal fun BreadcrumbsEntity.Companion.get(realm: Realm): BreadcrumbsEntity? {
+    return realm.where<BreadcrumbsEntity>().findFirst()
+}
+
+internal fun BreadcrumbsEntity.Companion.getOrCreate(realm: Realm): BreadcrumbsEntity {
+    return get(realm) ?: realm.createObject()
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/ReadMarkerEntityQueries.kt

@@ -20,6 +20,7 @@ import im.vector.matrix.android.internal.database.model.ReadMarkerEntity
 import im.vector.matrix.android.internal.database.model.ReadMarkerEntityFields
 import io.realm.Realm
 import io.realm.RealmQuery
+import io.realm.kotlin.createObject
 import io.realm.kotlin.where
 
 internal fun ReadMarkerEntity.Companion.where(realm: Realm, roomId: String): RealmQuery<ReadMarkerEntity> {
@@ -28,6 +29,5 @@ internal fun ReadMarkerEntity.Companion.where(realm: Realm, roomId: String): Rea
 }
 
 internal fun ReadMarkerEntity.Companion.getOrCreate(realm: Realm, roomId: String): ReadMarkerEntity {
-    return where(realm, roomId).findFirst()
-           ?: realm.createObject(ReadMarkerEntity::class.java, roomId)
+    return where(realm, roomId).findFirst() ?: realm.createObject(roomId)
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/ReadReceiptEntityQueries.kt

@@ -20,6 +20,7 @@ import im.vector.matrix.android.internal.database.model.ReadReceiptEntity
 import im.vector.matrix.android.internal.database.model.ReadReceiptEntityFields
 import io.realm.Realm
 import io.realm.RealmQuery
+import io.realm.kotlin.createObject
 import io.realm.kotlin.where
 
 internal fun ReadReceiptEntity.Companion.where(realm: Realm, roomId: String, userId: String): RealmQuery<ReadReceiptEntity> {
@@ -44,7 +45,8 @@ internal fun ReadReceiptEntity.Companion.createUnmanaged(roomId: String, eventId
 
 internal fun ReadReceiptEntity.Companion.getOrCreate(realm: Realm, roomId: String, userId: String): ReadReceiptEntity {
     return ReadReceiptEntity.where(realm, roomId, userId).findFirst()
-           ?: realm.createObject(ReadReceiptEntity::class.java, buildPrimaryKey(roomId, userId)).apply {
+            ?: realm.createObject<ReadReceiptEntity>(buildPrimaryKey(roomId, userId))
+                    .apply {
                         this.roomId = roomId
                         this.userId = userId
                     }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/database/query/RoomSummaryEntityQueries.kt

@@ -21,6 +21,7 @@ import im.vector.matrix.android.internal.database.model.RoomSummaryEntityFields
 import io.realm.Realm
 import io.realm.RealmQuery
 import io.realm.RealmResults
+import io.realm.kotlin.createObject
 import io.realm.kotlin.where
 
 internal fun RoomSummaryEntity.Companion.where(realm: Realm, roomId: String? = null): RealmQuery<RoomSummaryEntity> {
@@ -32,8 +33,7 @@ internal fun RoomSummaryEntity.Companion.where(realm: Realm, roomId: String? = n
 }
 
 internal fun RoomSummaryEntity.Companion.getOrCreate(realm: Realm, roomId: String): RoomSummaryEntity {
-    return where(realm, roomId).findFirst()
-           ?: realm.createObject(RoomSummaryEntity::class.java, roomId)
+    return where(realm, roomId).findFirst() ?: realm.createObject(roomId)
 }
 
 internal fun RoomSummaryEntity.Companion.getDirectRooms(realm: Realm): RealmResults<RoomSummaryEntity> {

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/di/MoshiProvider.kt

@@ -21,6 +21,7 @@ import im.vector.matrix.android.api.session.room.model.message.*
 import im.vector.matrix.android.internal.network.parsing.RuntimeJsonAdapterFactory
 import im.vector.matrix.android.internal.network.parsing.UriMoshiAdapter
 import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountData
+import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataBreadcrumbs
 import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataDirectMessages
 import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataFallback
 import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountDataIgnoredUsers
@@ -34,6 +35,7 @@ object MoshiProvider {
                     .registerSubtype(UserAccountDataDirectMessages::class.java, UserAccountData.TYPE_DIRECT_MESSAGES)
                     .registerSubtype(UserAccountDataIgnoredUsers::class.java, UserAccountData.TYPE_IGNORED_USER_LIST)
                     .registerSubtype(UserAccountDataPushRules::class.java, UserAccountData.TYPE_PUSH_RULES)
+                    .registerSubtype(UserAccountDataBreadcrumbs::class.java, UserAccountData.TYPE_BREADCRUMBS)
             )
             .add(RuntimeJsonAdapterFactory.of(MessageContent::class.java, "msgtype", MessageDefaultContent::class.java)
                     .registerSubtype(MessageTextContent::class.java, MessageType.MSGTYPE_TEXT)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/network/RetrofitExtensions.kt

@@ -19,6 +19,7 @@
 package im.vector.matrix.android.internal.network
 
 import com.squareup.moshi.JsonDataException
+import com.squareup.moshi.JsonEncodingException
 import im.vector.matrix.android.api.failure.ConsentNotGivenError
 import im.vector.matrix.android.api.failure.Failure
 import im.vector.matrix.android.api.failure.MatrixError
@@ -106,6 +107,9 @@ private fun toFailure(errorBody: ResponseBody?, httpCode: Int): Failure {
     } catch (ex: JsonDataException) {
         // This is not a MatrixError
         Timber.w("The error returned by the server is not a MatrixError")
+    } catch (ex: JsonEncodingException) {
+        // This is not a MatrixError, HTML code?
+        Timber.w("The error returned by the server is not a MatrixError, probably HTML string")
     }
 
     return Failure.OtherServerError(errorBodyStr, httpCode)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/content/DefaultContentUploadStateTracker.kt

@@ -42,6 +42,10 @@ internal class DefaultContentUploadStateTracker @Inject constructor() : ContentU
         }
     }
 
+    override fun clear() {
+        listeners.clear()
+    }
+
     internal fun setFailure(key: String, throwable: Throwable) {
         val failure = ContentUploadStateTracker.State.Failure(throwable)
         updateState(key, failure)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/DefaultRoomDirectoryService.kt

@@ -44,9 +44,9 @@ internal class DefaultRoomDirectoryService @Inject constructor(private val getPu
                 .executeBy(taskExecutor)
     }
 
-    override fun joinRoom(roomId: String, callback: MatrixCallback<Unit>): Cancelable {
+    override fun joinRoom(roomId: String, reason: String?, callback: MatrixCallback<Unit>): Cancelable {
         return joinRoomTask
-                .configureWith(JoinRoomTask.Params(roomId)) {
+                .configureWith(JoinRoomTask.Params(roomId, reason)) {
                     this.callback = callback
                 }
                 .executeBy(taskExecutor)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/DefaultRoomService.kt

@@ -33,6 +33,7 @@ import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.session.room.create.CreateRoomTask
 import im.vector.matrix.android.internal.session.room.membership.joining.JoinRoomTask
 import im.vector.matrix.android.internal.session.room.read.MarkAllRoomsReadTask
+import im.vector.matrix.android.internal.session.user.accountdata.UpdateBreadcrumbsTask
 import im.vector.matrix.android.internal.task.TaskExecutor
 import im.vector.matrix.android.internal.task.configureWith
 import io.realm.Realm
@@ -43,6 +44,7 @@ internal class DefaultRoomService @Inject constructor(private val monarchy: Mona
                                                       private val createRoomTask: CreateRoomTask,
                                                       private val joinRoomTask: JoinRoomTask,
                                                       private val markAllRoomsReadTask: MarkAllRoomsReadTask,
+                                                      private val updateBreadcrumbsTask: UpdateBreadcrumbsTask,
                                                       private val roomFactory: RoomFactory,
                                                       private val taskExecutor: TaskExecutor) : RoomService {
 
@@ -75,9 +77,28 @@ internal class DefaultRoomService @Inject constructor(private val monarchy: Mona
         )
     }
 
-    override fun joinRoom(roomId: String, viaServers: List<String>, callback: MatrixCallback<Unit>): Cancelable {
+    override fun liveBreadcrumbs(): LiveData<List<RoomSummary>> {
+        return monarchy.findAllMappedWithChanges(
+                { realm ->
+                    RoomSummaryEntity.where(realm)
+                            .isNotEmpty(RoomSummaryEntityFields.DISPLAY_NAME)
+                            .notEqualTo(RoomSummaryEntityFields.VERSIONING_STATE_STR, VersioningState.UPGRADED_ROOM_JOINED.name)
+                            .greaterThan(RoomSummaryEntityFields.BREADCRUMBS_INDEX, RoomSummaryEntity.NOT_IN_BREADCRUMBS)
+                            .sort(RoomSummaryEntityFields.BREADCRUMBS_INDEX)
+                },
+                { roomSummaryMapper.map(it) }
+        )
+    }
+
+    override fun onRoomDisplayed(roomId: String): Cancelable {
+        return updateBreadcrumbsTask
+                .configureWith(UpdateBreadcrumbsTask.Params(roomId))
+                .executeBy(taskExecutor)
+    }
+
+    override fun joinRoom(roomId: String, reason: String?, viaServers: List<String>, callback: MatrixCallback<Unit>): Cancelable {
         return joinRoomTask
-                .configureWith(JoinRoomTask.Params(roomId, viaServers)) {
+                .configureWith(JoinRoomTask.Params(roomId, reason, viaServers)) {
                     this.callback = callback
                 }
                 .executeBy(taskExecutor)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomAPI.kt

@@ -217,7 +217,7 @@ internal interface RoomAPI {
     @POST(NetworkConstants.URI_API_PREFIX_PATH_R0 + "rooms/{roomId}/join")
     fun join(@Path("roomId") roomId: String,
              @Query("server_name") viaServers: List<String>,
-             @Body params: Map<String, String>): Call<Unit>
+             @Body params: Map<String, String?>): Call<Unit>
 
     /**
      * Leave the given room.
@@ -227,7 +227,7 @@ internal interface RoomAPI {
      */
     @POST(NetworkConstants.URI_API_PREFIX_PATH_R0 + "rooms/{roomId}/leave")
     fun leave(@Path("roomId") roomId: String,
-              @Body params: Map<String, String>): Call<Unit>
+              @Body params: Map<String, String?>): Call<Unit>
 
     /**
      * Strips all information out of an event which isn't critical to the integrity of the server-side representation of the room.

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/DefaultMembershipService.kt

@@ -83,8 +83,8 @@ internal class DefaultMembershipService @AssistedInject constructor(@Assisted pr
         return result
     }
 
-    override fun invite(userId: String, callback: MatrixCallback<Unit>): Cancelable {
-        val params = InviteTask.Params(roomId, userId)
+    override fun invite(userId: String, reason: String?, callback: MatrixCallback<Unit>): Cancelable {
+        val params = InviteTask.Params(roomId, userId, reason)
         return inviteTask
                 .configureWith(params) {
                     this.callback = callback
@@ -92,8 +92,8 @@ internal class DefaultMembershipService @AssistedInject constructor(@Assisted pr
                 .executeBy(taskExecutor)
     }
 
-    override fun join(viaServers: List<String>, callback: MatrixCallback<Unit>): Cancelable {
-        val params = JoinRoomTask.Params(roomId, viaServers)
+    override fun join(reason: String?, viaServers: List<String>, callback: MatrixCallback<Unit>): Cancelable {
+        val params = JoinRoomTask.Params(roomId, reason, viaServers)
         return joinTask
                 .configureWith(params) {
                     this.callback = callback
@@ -101,8 +101,8 @@ internal class DefaultMembershipService @AssistedInject constructor(@Assisted pr
                 .executeBy(taskExecutor)
     }
 
-    override fun leave(callback: MatrixCallback<Unit>): Cancelable {
-        val params = LeaveRoomTask.Params(roomId)
+    override fun leave(reason: String?, callback: MatrixCallback<Unit>): Cancelable {
+        val params = LeaveRoomTask.Params(roomId, reason)
         return leaveRoomTask
                 .configureWith(params) {
                     this.callback = callback

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/joining/InviteBody.kt

@@ -21,5 +21,6 @@ import com.squareup.moshi.JsonClass
 
 @JsonClass(generateAdapter = true)
 data class InviteBody(
-        @Json(name = "user_id") val userId: String
+        @Json(name = "user_id") val userId: String,
+        @Json(name = "reason") val reason: String?
 )

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/joining/InviteTask.kt

@@ -24,7 +24,8 @@ import javax.inject.Inject
 internal interface InviteTask : Task<InviteTask.Params, Unit> {
     data class Params(
             val roomId: String,
-            val userId: String
+            val userId: String,
+            val reason: String?
     )
 }
 
@@ -32,7 +33,7 @@ internal class DefaultInviteTask @Inject constructor(private val roomAPI: RoomAP
 
     override suspend fun execute(params: InviteTask.Params) {
         return executeRequest {
-            val body = InviteBody(params.userId)
+            val body = InviteBody(params.userId, params.reason)
             apiCall = roomAPI.invite(params.roomId, body)
         }
     }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/joining/JoinRoomTask.kt

@@ -32,6 +32,7 @@ import javax.inject.Inject
 internal interface JoinRoomTask : Task<JoinRoomTask.Params, Unit> {
     data class Params(
             val roomId: String,
+            val reason: String?,
             val viaServers: List<String> = emptyList()
     )
 }
@@ -43,7 +44,7 @@ internal class DefaultJoinRoomTask @Inject constructor(private val roomAPI: Room
 
     override suspend fun execute(params: JoinRoomTask.Params) {
         executeRequest<Unit> {
-            apiCall = roomAPI.join(params.roomId, params.viaServers, HashMap())
+            apiCall = roomAPI.join(params.roomId, params.viaServers, mapOf("reason" to params.reason))
         }
         val roomId = params.roomId
         // Wait for room to come back from the sync (but it can maybe be in the DB is the sync response is received before)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/leaving/LeaveRoomTask.kt

@@ -23,7 +23,8 @@ import javax.inject.Inject
 
 internal interface LeaveRoomTask : Task<LeaveRoomTask.Params, Unit> {
     data class Params(
-            val roomId: String
+            val roomId: String,
+            val reason: String?
     )
 }
 
@@ -31,7 +32,7 @@ internal class DefaultLeaveRoomTask @Inject constructor(private val roomAPI: Roo
 
     override suspend fun execute(params: LeaveRoomTask.Params) {
         return executeRequest {
-            apiCall = roomAPI.leave(params.roomId, HashMap())
+            apiCall = roomAPI.leave(params.roomId, mapOf("reason" to params.reason))
         }
     }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/relation/DefaultRelationService.kt

@@ -30,10 +30,13 @@ import im.vector.matrix.android.api.session.room.model.message.MessageType
 import im.vector.matrix.android.api.session.room.model.relation.RelationService
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.matrix.android.api.util.Cancelable
+import im.vector.matrix.android.api.util.NoOpCancellable
 import im.vector.matrix.android.api.util.Optional
 import im.vector.matrix.android.api.util.toOptional
+import im.vector.matrix.android.internal.database.mapper.TimelineEventMapper
 import im.vector.matrix.android.internal.database.mapper.asDomain
 import im.vector.matrix.android.internal.database.model.EventAnnotationsSummaryEntity
+import im.vector.matrix.android.internal.database.model.TimelineEventEntity
 import im.vector.matrix.android.internal.database.query.where
 import im.vector.matrix.android.internal.di.UserId
 import im.vector.matrix.android.internal.session.room.send.EncryptEventWorker
@@ -44,6 +47,7 @@ import im.vector.matrix.android.internal.session.room.timeline.TimelineSendEvent
 import im.vector.matrix.android.internal.task.TaskExecutor
 import im.vector.matrix.android.internal.task.configureWith
 import im.vector.matrix.android.internal.util.CancelableWork
+import im.vector.matrix.android.internal.util.fetchCopyMap
 import im.vector.matrix.android.internal.worker.WorkerParamsFactory
 import timber.log.Timber
 
@@ -54,6 +58,7 @@ internal class DefaultRelationService @AssistedInject constructor(@Assisted priv
                                                                   private val cryptoService: CryptoService,
                                                                   private val findReactionEventForUndoTask: FindReactionEventForUndoTask,
                                                                   private val fetchEditHistoryTask: FetchEditHistoryTask,
+                                                                  private val timelineEventMapper: TimelineEventMapper,
                                                                   private val monarchy: Monarchy,
                                                                   private val taskExecutor: TaskExecutor)
     : RelationService {
@@ -64,11 +69,27 @@ internal class DefaultRelationService @AssistedInject constructor(@Assisted priv
     }
 
     override fun sendReaction(targetEventId: String, reaction: String): Cancelable {
+        return if (monarchy
+                        .fetchCopyMap(
+                                { realm ->
+                                    TimelineEventEntity.where(realm, roomId, targetEventId).findFirst()
+                                },
+                                { entity, _ ->
+                                    timelineEventMapper.map(entity)
+                                })
+                        ?.annotations
+                        ?.reactionsSummary
+                        .orEmpty()
+                        .none { it.addedByMe && it.key == reaction }) {
             val event = eventFactory.createReactionEvent(roomId, targetEventId, reaction)
                     .also { saveLocalEcho(it) }
             val sendRelationWork = createSendEventWork(event, true)
             TimelineSendEventWorkCommon.postWork(context, roomId, sendRelationWork)
-        return CancelableWork(context, sendRelationWork.id)
+            CancelableWork(context, sendRelationWork.id)
+        } else {
+            Timber.w("Reaction already added")
+            NoOpCancellable
+        }
     }
 
     override fun undoReaction(targetEventId: String, reaction: String): Cancelable {

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/send/LocalEchoEventFactory.kt

@@ -78,7 +78,7 @@ internal class LocalEchoEventFactory @Inject constructor(
             val htmlText = renderer.render(document)
 
             if (isFormattedTextPertinent(source, htmlText)) {
-                return TextContent(source, htmlText)
+                return TextContent(text.toString(), htmlText)
             }
         } else {
             // Try to detect pills

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/timeline/DefaultTimeline.kt

@@ -289,6 +289,9 @@ internal class DefaultTimeline(
     }
 
     override fun addListener(listener: Timeline.Listener) = synchronized(listeners) {
+        if (listeners.contains(listener)) {
+            return false
+        }
         listeners.add(listener).also {
             postSnapshot()
         }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/UserAccountDataSyncHandler.kt

@@ -29,6 +29,7 @@ import im.vector.matrix.android.internal.session.room.membership.RoomMembers
 import im.vector.matrix.android.internal.session.sync.model.InvitedRoomSync
 import im.vector.matrix.android.internal.session.sync.model.accountdata.*
 import im.vector.matrix.android.internal.session.user.accountdata.DirectChatsHelper
+import im.vector.matrix.android.internal.session.user.accountdata.SaveBreadcrumbsTask
 import im.vector.matrix.android.internal.session.user.accountdata.SaveIgnoredUsersTask
 import im.vector.matrix.android.internal.session.user.accountdata.UpdateUserAccountDataTask
 import im.vector.matrix.android.internal.task.TaskExecutor
@@ -44,6 +45,7 @@ internal class UserAccountDataSyncHandler @Inject constructor(private val monarc
                                                               private val updateUserAccountDataTask: UpdateUserAccountDataTask,
                                                               private val savePushRulesTask: SavePushRulesTask,
                                                               private val saveIgnoredUsersTask: SaveIgnoredUsersTask,
+                                                              private val saveBreadcrumbsTask: SaveBreadcrumbsTask,
                                                               private val taskExecutor: TaskExecutor) {
 
     suspend fun handle(accountData: UserAccountDataSync?, invites: Map<String, InvitedRoomSync>?) {
@@ -52,6 +54,7 @@ internal class UserAccountDataSyncHandler @Inject constructor(private val monarc
                 is UserAccountDataDirectMessages -> handleDirectChatRooms(it)
                 is UserAccountDataPushRules      -> handlePushRules(it)
                 is UserAccountDataIgnoredUsers   -> handleIgnoredUsers(it)
+                is UserAccountDataBreadcrumbs    -> handleBreadcrumbs(it)
                 is UserAccountDataFallback       -> Timber.d("Receive account data of unhandled type ${it.type}")
                 else                             -> error("Missing code here!")
             }
@@ -130,4 +133,10 @@ internal class UserAccountDataSyncHandler @Inject constructor(private val monarc
                 .executeBy(taskExecutor)
         // TODO If not initial sync, we should execute a init sync
     }
+
+    private fun handleBreadcrumbs(userAccountDataBreadcrumbs: UserAccountDataBreadcrumbs) {
+        saveBreadcrumbsTask
+                .configureWith(SaveBreadcrumbsTask.Params(userAccountDataBreadcrumbs.content.recentRoomIds))
+                .executeBy(taskExecutor)
+    }
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountData.kt

@@ -25,6 +25,7 @@ internal abstract class UserAccountData {
     companion object {
         const val TYPE_IGNORED_USER_LIST = "m.ignored_user_list"
         const val TYPE_DIRECT_MESSAGES = "m.direct"
+        const val TYPE_BREADCRUMBS = "im.vector.setting.breadcrumbs" // Was previously "im.vector.riot.breadcrumb_rooms"
         const val TYPE_PREVIEW_URLS = "org.matrix.preview_urls"
         const val TYPE_WIDGETS = "m.widgets"
         const val TYPE_PUSH_RULES = "m.push_rules"

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/sync/model/accountdata/UserAccountDataBreadcrumbs.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.session.sync.model.accountdata
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+
+@JsonClass(generateAdapter = true)
+internal data class UserAccountDataBreadcrumbs(
+        @Json(name = "type") override val type: String = TYPE_BREADCRUMBS,
+        @Json(name = "content") val content: BreadcrumbsContent
+) : UserAccountData()
+
+@JsonClass(generateAdapter = true)
+internal data class BreadcrumbsContent(
+        @Json(name = "recent_rooms") val recentRoomIds: List<String> = emptyList()
+)

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/AccountDataModule.kt

@@ -35,5 +35,11 @@ internal abstract class AccountDataModule {
     }
 
     @Binds
-    abstract fun bindUpdateUserAccountDataTask(updateUserAccountDataTask: DefaultUpdateUserAccountDataTask): UpdateUserAccountDataTask
+    abstract fun bindUpdateUserAccountDataTask(task: DefaultUpdateUserAccountDataTask): UpdateUserAccountDataTask
+
+    @Binds
+    abstract fun bindSaveBreadcrumbsTask(task: DefaultSaveBreadcrumbsTask): SaveBreadcrumbsTask
+
+    @Binds
+    abstract fun bindUpdateBreadcrumsTask(task: DefaultUpdateBreadcrumbsTask): UpdateBreadcrumbsTask
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/SaveBreadcrumbsTask.kt

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package im.vector.matrix.android.internal.session.user.accountdata
+
+import com.zhuinden.monarchy.Monarchy
+import im.vector.matrix.android.internal.database.model.BreadcrumbsEntity
+import im.vector.matrix.android.internal.database.model.RoomSummaryEntity
+import im.vector.matrix.android.internal.database.model.RoomSummaryEntityFields
+import im.vector.matrix.android.internal.database.query.getOrCreate
+import im.vector.matrix.android.internal.database.query.where
+import im.vector.matrix.android.internal.task.Task
+import im.vector.matrix.android.internal.util.awaitTransaction
+import io.realm.RealmList
+import javax.inject.Inject
+
+/**
+ * Save the Breadcrumbs roomId list in DB, either from the sync, or updated locally
+ */
+internal interface SaveBreadcrumbsTask : Task<SaveBreadcrumbsTask.Params, Unit> {
+    data class Params(
+            val recentRoomIds: List<String>
+    )
+}
+
+internal class DefaultSaveBreadcrumbsTask @Inject constructor(
+        private val monarchy: Monarchy
+) : SaveBreadcrumbsTask {
+
+    override suspend fun execute(params: SaveBreadcrumbsTask.Params) {
+        monarchy.awaitTransaction { realm ->
+            // Get or create a breadcrumbs entity
+            val entity = BreadcrumbsEntity.getOrCreate(realm)
+
+            // And save the new received list
+            entity.recentRoomIds = RealmList<String>().apply { addAll(params.recentRoomIds) }
+
+            // Update the room summaries
+            // Reset all the indexes...
+            RoomSummaryEntity.where(realm)
+                    .greaterThan(RoomSummaryEntityFields.BREADCRUMBS_INDEX, RoomSummaryEntity.NOT_IN_BREADCRUMBS)
+                    .findAll()
+                    .forEach {
+                        it.breadcrumbsIndex = RoomSummaryEntity.NOT_IN_BREADCRUMBS
+                    }
+
+            // ...and apply new indexes
+            params.recentRoomIds.forEachIndexed { index, roomId ->
+                RoomSummaryEntity.where(realm, roomId)
+                        .findFirst()
+                        ?.breadcrumbsIndex = index
+            }
+        }
+    }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/UpdateBreadcrumbsTask.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.matrix.android.internal.session.user.accountdata
+
+import com.zhuinden.monarchy.Monarchy
+import im.vector.matrix.android.internal.database.model.BreadcrumbsEntity
+import im.vector.matrix.android.internal.database.query.get
+import im.vector.matrix.android.internal.session.sync.model.accountdata.BreadcrumbsContent
+import im.vector.matrix.android.internal.task.Task
+import im.vector.matrix.android.internal.util.fetchCopied
+import javax.inject.Inject
+
+// Use the same arbitrary value than Riot-Web
+private const val MAX_BREADCRUMBS_ROOMS_NUMBER = 20
+
+internal interface UpdateBreadcrumbsTask : Task<UpdateBreadcrumbsTask.Params, Unit> {
+    data class Params(
+            val newTopRoomId: String
+    )
+}
+
+internal class DefaultUpdateBreadcrumbsTask @Inject constructor(
+        private val saveBreadcrumbsTask: SaveBreadcrumbsTask,
+        private val updateUserAccountDataTask: UpdateUserAccountDataTask,
+        private val monarchy: Monarchy
+) : UpdateBreadcrumbsTask {
+
+    override suspend fun execute(params: UpdateBreadcrumbsTask.Params) {
+        val newBreadcrumbs =
+                // Get the breadcrumbs entity, if any
+                monarchy.fetchCopied { BreadcrumbsEntity.get(it) }
+                        ?.recentRoomIds
+                        ?.apply {
+                            // Modify the list to add the newTopRoomId first
+                            // Ensure the newTopRoomId is not already in the list
+                            remove(params.newTopRoomId)
+                            // Add the newTopRoomId at first position
+                            add(0, params.newTopRoomId)
+                        }
+                        ?.take(MAX_BREADCRUMBS_ROOMS_NUMBER)
+                        ?: listOf(params.newTopRoomId)
+
+        // Update the DB locally, do not wait for the sync
+        saveBreadcrumbsTask.execute(SaveBreadcrumbsTask.Params(newBreadcrumbs))
+
+        // FIXME It can remove the previous breadcrumbs, if not synced yet
+        // And update account data
+        updateUserAccountDataTask.execute(UpdateUserAccountDataTask.BreadcrumbsParams(
+                breadcrumbsContent = BreadcrumbsContent(newBreadcrumbs)
+        ))
+    }
+}

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/user/accountdata/UpdateUserAccountDataTask.kt

@@ -18,6 +18,7 @@ package im.vector.matrix.android.internal.session.user.accountdata
 
 import im.vector.matrix.android.internal.di.UserId
 import im.vector.matrix.android.internal.network.executeRequest
+import im.vector.matrix.android.internal.session.sync.model.accountdata.BreadcrumbsContent
 import im.vector.matrix.android.internal.session.sync.model.accountdata.UserAccountData
 import im.vector.matrix.android.internal.task.Task
 import javax.inject.Inject
@@ -38,6 +39,15 @@ internal interface UpdateUserAccountDataTask : Task<UpdateUserAccountDataTask.Pa
             return directMessages
         }
     }
+
+    data class BreadcrumbsParams(override val type: String = UserAccountData.TYPE_BREADCRUMBS,
+                                 private val breadcrumbsContent: BreadcrumbsContent
+    ) : Params {
+
+        override fun getData(): Any {
+            return breadcrumbsContent
+        }
+    }
 }
 
 internal class DefaultUpdateUserAccountDataTask @Inject constructor(private val accountDataApi: AccountDataAPI,

matrix-sdk-android/src/main/res/values/strings_RiotX.xml

@@ -2,8 +2,19 @@
 <resources>
 
 
-
-
+    <string name="notice_room_invite_no_invitee_with_reason">%1$s\'s invitation. Reason: %2$s</string>
+    <string name="notice_room_invite_with_reason">%1$s invited %2$s. Reason: %3$s</string>
+    <string name="notice_room_invite_you_with_reason">%1$s invited you. Reason: %2$s</string>
+    <string name="notice_room_join_with_reason">%1$s joined. Reason: %2$s</string>
+    <string name="notice_room_leave_with_reason">%1$s left. Reason: %2$s</string>
+    <string name="notice_room_reject_with_reason">%1$s rejected the invitation. Reason: %2$s</string>
+    <string name="notice_room_kick_with_reason">%1$s kicked %2$s. Reason: %3$s</string>
+    <string name="notice_room_unban_with_reason">%1$s unbanned %2$s. Reason: %3$s</string>
+    <string name="notice_room_ban_with_reason">%1$s banned %2$s. Reason: %3$s</string>
+    <string name="notice_room_third_party_invite_with_reason">%1$s sent an invitation to %2$s to join the room. Reason: %3$s</string>
+    <string name="notice_room_third_party_revoked_invite_with_reason">%1$s revoked the invitation for %2$s to join the room. Reason: %3$s</string>
+    <string name="notice_room_third_party_registered_invite_with_reason">%1$s accepted the invitation for %2$s. Reason: %3$s</string>
+    <string name="notice_room_withdraw_with_reason">%1$s withdrew %2$s\'s invitation. Reason: %3$s</string>
 
     <string name="no_network_indicator">There is no network connection right now</string>
 </resources>

tools/check/forbidden_strings_in_resources.txt

@@ -82,3 +82,6 @@ layout_constraintLeft_
 ### Will crash on API < 21. Use ?colorAccent instead
 \?android:colorAccent
 \?android:attr/colorAccent
+
+### Use androidx.recyclerview.widget.RecyclerView because EpoxyRecyclerViews add behavior we do not want to
+<com\.airbnb\.epoxy\.EpoxyRecyclerView

vector/build.gradle

@@ -15,8 +15,8 @@ androidExtensions {
 }
 
 ext.versionMajor = 0
-ext.versionMinor = 9
-ext.versionPatch = 1
+ext.versionMinor = 10
+ext.versionPatch = 0
 
 static def getGitTimestamp() {
     def cmd = 'git show -s --format=%ct'

vector/src/debug/java/im/vector/riotx/features/debug/sas/DebugSasEmojiActivity.kt

@@ -20,16 +20,22 @@ import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import im.vector.matrix.android.api.crypto.getAllVerificationEmojis
 import im.vector.riotx.R
-import kotlinx.android.synthetic.main.fragment_generic_recycler_epoxy.*
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
+import kotlinx.android.synthetic.main.fragment_generic_recycler.*
 
 class DebugSasEmojiActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.fragment_generic_recycler_epoxy)
-
+        setContentView(R.layout.fragment_generic_recycler)
         val controller = SasEmojiController()
-        epoxyRecyclerView.setController(controller)
+        recyclerView.configureWith(controller)
         controller.setData(SasState(getAllVerificationEmojis()))
     }
+
+    override fun onDestroy() {
+        recyclerView.cleanup()
+        super.onDestroy()
+    }
 }

vector/src/main/java/im/vector/riotx/VectorApplication.kt

@@ -42,7 +42,7 @@ import im.vector.riotx.core.di.DaggerVectorComponent
 import im.vector.riotx.core.di.HasVectorInjector
 import im.vector.riotx.core.di.VectorComponent
 import im.vector.riotx.core.extensions.configureAndStart
-import im.vector.riotx.core.utils.initKnownEmojiHashSet
+import im.vector.riotx.core.rx.setupRxPlugin
 import im.vector.riotx.features.configuration.VectorConfiguration
 import im.vector.riotx.features.lifecycle.VectorActivityLifecycleCallbacks
 import im.vector.riotx.features.notifications.NotificationDrawerManager
@@ -55,8 +55,7 @@ import im.vector.riotx.features.version.VersionProvider
 import im.vector.riotx.push.fcm.FcmHelper
 import timber.log.Timber
 import java.text.SimpleDateFormat
-import java.util.Date
-import java.util.Locale
+import java.util.*
 import javax.inject.Inject
 
 class VectorApplication : Application(), HasVectorInjector, MatrixConfiguration.Provider, androidx.work.Configuration.Provider {
@@ -79,14 +78,13 @@ class VectorApplication : Application(), HasVectorInjector, MatrixConfiguration.
     lateinit var vectorComponent: VectorComponent
     private var fontThreadHandler: Handler? = null
 
-//    var slowMode = false
-
     override fun onCreate() {
         super.onCreate()
         appContext = this
         vectorComponent = DaggerVectorComponent.factory().create(this)
         vectorComponent.inject(this)
         vectorUncaughtExceptionHandler.activate(this)
+        setupRxPlugin()
 
         if (BuildConfig.DEBUG) {
             Timber.plant(Timber.DebugTree())
@@ -138,7 +136,7 @@ class VectorApplication : Application(), HasVectorInjector, MatrixConfiguration.
         })
         ProcessLifecycleOwner.get().lifecycle.addObserver(appStateHandler)
         // This should be done as early as possible
-        initKnownEmojiHashSet(appContext)
+        // initKnownEmojiHashSet(appContext)
     }
 
     override fun providesMatrixConfiguration() = MatrixConfiguration(BuildConfig.FLAVOR_DESCRIPTION)

vector/src/main/java/im/vector/riotx/core/di/FragmentModule.kt

@@ -33,10 +33,12 @@ import im.vector.riotx.features.home.LoadingFragment
 import im.vector.riotx.features.home.createdirect.CreateDirectRoomDirectoryUsersFragment
 import im.vector.riotx.features.home.createdirect.CreateDirectRoomKnownUsersFragment
 import im.vector.riotx.features.home.group.GroupListFragment
+import im.vector.riotx.features.home.room.breadcrumbs.BreadcrumbsFragment
 import im.vector.riotx.features.home.room.detail.RoomDetailFragment
 import im.vector.riotx.features.home.room.list.RoomListFragment
 import im.vector.riotx.features.login.*
 import im.vector.riotx.features.login.terms.LoginTermsFragment
+import im.vector.riotx.features.reactions.EmojiChooserFragment
 import im.vector.riotx.features.reactions.EmojiSearchResultFragment
 import im.vector.riotx.features.roomdirectory.PublicRoomsFragment
 import im.vector.riotx.features.roomdirectory.createroom.CreateRoomFragment
@@ -249,4 +251,14 @@ interface FragmentModule {
     @IntoMap
     @FragmentKey(PublicRoomsFragment::class)
     fun bindPublicRoomsFragment(fragment: PublicRoomsFragment): Fragment
+
+    @Binds
+    @IntoMap
+    @FragmentKey(BreadcrumbsFragment::class)
+    fun bindBreadcrumbsFragment(fragment: BreadcrumbsFragment): Fragment
+
+    @Binds
+    @IntoMap
+    @FragmentKey(EmojiChooserFragment::class)
+    fun bindEmojiChooserFragment(fragment: EmojiChooserFragment): Fragment
 }

vector/src/main/java/im/vector/riotx/core/di/ViewModelModule.kt

@@ -29,6 +29,7 @@ import im.vector.riotx.features.crypto.keysbackup.setup.KeysBackupSetupSharedVie
 import im.vector.riotx.features.crypto.verification.SasVerificationViewModel
 import im.vector.riotx.features.home.HomeSharedActionViewModel
 import im.vector.riotx.features.home.createdirect.CreateDirectRoomSharedActionViewModel
+import im.vector.riotx.features.home.room.detail.RoomDetailSharedActionViewModel
 import im.vector.riotx.features.home.room.detail.timeline.action.MessageSharedActionViewModel
 import im.vector.riotx.features.home.room.list.actions.RoomListQuickActionsSharedActionViewModel
 import im.vector.riotx.features.login.LoginSharedActionViewModel
@@ -118,4 +119,9 @@ interface ViewModelModule {
     @IntoMap
     @ViewModelKey(LoginSharedActionViewModel::class)
     fun bindLoginSharedActionViewModel(viewModel: LoginSharedActionViewModel): ViewModel
+
+    @Binds
+    @IntoMap
+    @ViewModelKey(RoomDetailSharedActionViewModel::class)
+    fun bindRoomDetailSharedActionViewModel(viewModel: RoomDetailSharedActionViewModel): ViewModel
 }

vector/src/main/java/im/vector/riotx/core/error/ErrorFormatter.kt

@@ -20,6 +20,7 @@ import im.vector.matrix.android.api.failure.Failure
 import im.vector.matrix.android.api.failure.MatrixError
 import im.vector.riotx.R
 import im.vector.riotx.core.resources.StringProvider
+import java.net.HttpURLConnection
 import java.net.SocketTimeoutException
 import java.net.UnknownHostException
 import javax.inject.Inject
@@ -76,6 +77,15 @@ class ErrorFormatter @Inject constructor(private val stringProvider: StringProvi
                     }
                 }
             }
+            is Failure.OtherServerError  -> {
+                when (throwable.httpCode) {
+                    HttpURLConnection.HTTP_NOT_FOUND ->
+                        // homeserver not found
+                        stringProvider.getString(R.string.login_error_no_homeserver_found)
+                    else                             ->
+                        throwable.localizedMessage
+                }
+            }
             else                         -> throwable.localizedMessage
         }
                 ?: stringProvider.getString(R.string.unknown_error)

vector/src/main/java/im/vector/riotx/core/extensions/RecyclerView.kt

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.core.extensions
+
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.airbnb.epoxy.EpoxyController
+
+/**
+ * Apply a Vertical LinearLayout Manager to the recyclerView and set the adapter from the epoxy controller
+ */
+fun RecyclerView.configureWith(epoxyController: EpoxyController,
+                               itemAnimator: RecyclerView.ItemAnimator? = null,
+                               showDivider: Boolean = false,
+                               hasFixedSize: Boolean = true) {
+    layoutManager = LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false)
+    itemAnimator?.let { this.itemAnimator = it }
+    if (showDivider) {
+        addItemDecoration(DividerItemDecoration(context, DividerItemDecoration.VERTICAL))
+    }
+    setHasFixedSize(hasFixedSize)
+    adapter = epoxyController.adapter
+}
+
+/**
+ * To call from Fragment.onDestroyView()
+ */
+fun RecyclerView.cleanup() {
+    adapter = null
+}

vector/src/main/java/im/vector/riotx/core/platform/StateView.kt

@@ -51,7 +51,7 @@ class StateView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
 
     init {
         View.inflate(context, R.layout.view_state, this)
-        layoutParams = LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT)
+        layoutParams = LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)
         errorRetryView.setOnClickListener {
             eventCallback?.onRetryClicked()
         }

vector/src/main/java/im/vector/riotx/core/platform/VectorBaseBottomSheetDialogFragment.kt

@@ -73,7 +73,7 @@ abstract class VectorBaseBottomSheetDialogFragment : BottomSheetDialogFragment()
         injectWith(screenComponent)
     }
 
-    protected open fun injectWith(screenComponent: ScreenComponent) = Unit
+    protected open fun injectWith(injector: ScreenComponent) = Unit
 
     override fun onCreate(savedInstanceState: Bundle?) {
         mvrxViewIdProperty.restoreFrom(savedInstanceState)

vector/src/main/java/im/vector/riotx/core/platform/VectorBaseFragment.kt

@@ -135,6 +135,7 @@ abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
     override fun onSaveInstanceState(outState: Bundle) {
         super.onSaveInstanceState(outState)
         restorables.forEach { it.onSaveInstanceState(outState) }
+        restorables.clear()
     }
 
     override fun onViewStateRestored(savedInstanceState: Bundle?) {

vector/src/main/java/im/vector/riotx/core/rx/Rx.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.core.rx
+
+import im.vector.riotx.BuildConfig
+import io.reactivex.plugins.RxJavaPlugins
+import timber.log.Timber
+
+/**
+ * Make sure unhandled Rx error does not crash the app in production
+ */
+fun setupRxPlugin() {
+    RxJavaPlugins.setErrorHandler { throwable ->
+        Timber.e(throwable, "RxError")
+
+        // Avoid crash in production
+        if (BuildConfig.DEBUG) {
+            throw throwable
+        }
+    }
+}

vector/src/main/java/im/vector/riotx/core/utils/Emoji.kt

@@ -16,13 +16,6 @@
 
 package im.vector.riotx.core.utils
 
-import android.content.Context
-import com.squareup.moshi.Moshi
-import im.vector.riotx.R
-import im.vector.riotx.features.reactions.EmojiDataSource
-import kotlinx.coroutines.GlobalScope
-import kotlinx.coroutines.launch
-import timber.log.Timber
 import java.util.regex.Pattern
 
 private val emojisPattern = Pattern.compile("((?:[\uD83C\uDF00-\uD83D\uDDFF]" +
@@ -49,6 +42,7 @@ private val emojisPattern = Pattern.compile("((?:[\uD83C\uDF00-\uD83D\uDDFF]" +
         "|\uD83C\uDCCF\uFE0F?" +
         "|[\u231A\u231B\u2328\u23CF\u23E9-\u23F3\u23F8-\u23FA]\uFE0F?))")
 
+/*
 // A hashset from all supported emoji
 private var knownEmojiSet: HashSet<String>? = null
 
@@ -56,7 +50,7 @@ fun initKnownEmojiHashSet(context: Context, done: (() -> Unit)? = null) {
     GlobalScope.launch {
         context.resources.openRawResource(R.raw.emoji_picker_datasource).use { input ->
             val moshi = Moshi.Builder().build()
-            val jsonAdapter = moshi.adapter(EmojiDataSource.EmojiData::class.java)
+            val jsonAdapter = moshi.adapter(EmojiData::class.java)
             val inputAsString = input.bufferedReader().use { it.readText() }
             val source = jsonAdapter.fromJson(inputAsString)
             knownEmojiSet = HashSet<String>().also {
@@ -77,6 +71,7 @@ fun isSingleEmoji(string: String): Boolean {
     }
     return knownEmojiSet?.contains(string) ?: false
 }
+ */
 
 /**
  * Test if a string contains emojis.

vector/src/main/java/im/vector/riotx/features/command/Command.kt

@@ -27,16 +27,19 @@ import im.vector.riotx.R
 enum class Command(val command: String, val parameters: String, @StringRes val description: Int) {
     EMOTE("/me", "<message>", R.string.command_description_emote),
     BAN_USER("/ban", "<user-id> [reason]", R.string.command_description_ban_user),
-    UNBAN_USER("/unban", "<user-id>", R.string.command_description_unban_user),
+    UNBAN_USER("/unban", "<user-id> [reason]", R.string.command_description_unban_user),
     SET_USER_POWER_LEVEL("/op", "<user-id> [<power-level>]", R.string.command_description_op_user),
     RESET_USER_POWER_LEVEL("/deop", "<user-id>", R.string.command_description_deop_user),
-    INVITE("/invite", "<user-id>", R.string.command_description_invite_user),
-    JOIN_ROOM("/join", "<room-alias>", R.string.command_description_join_room),
-    PART("/part", "<room-alias>", R.string.command_description_part_room),
+    INVITE("/invite", "<user-id> [reason]", R.string.command_description_invite_user),
+    JOIN_ROOM("/join", "<room-alias> [reason]", R.string.command_description_join_room),
+    PART("/part", "<room-alias> [reason]", R.string.command_description_part_room),
     TOPIC("/topic", "<topic>", R.string.command_description_topic),
     KICK_USER("/kick", "<user-id> [reason]", R.string.command_description_kick_user),
     CHANGE_DISPLAY_NAME("/nick", "<display-name>", R.string.command_description_nick),
     MARKDOWN("/markdown", "<on|off>", R.string.command_description_markdown),
     CLEAR_SCALAR_TOKEN("/clear_scalar_token", "", R.string.command_description_clear_scalar_token),
     SPOILER("/spoiler", "<message>", R.string.command_description_spoiler);
+
+    val length
+        get() = command.length + 1
 }

vector/src/main/java/im/vector/riotx/features/command/CommandParser.kt

@@ -81,29 +81,52 @@ object CommandParser {
                     ParsedCommand.SendEmote(message)
                 }
                 Command.JOIN_ROOM.command              -> {
-                    val roomAlias = textMessage.substring(Command.JOIN_ROOM.command.length).trim()
+                    if (messageParts.size >= 2) {
+                        val roomAlias = messageParts[1]
 
                         if (roomAlias.isNotEmpty()) {
-                        ParsedCommand.JoinRoom(roomAlias)
+                            ParsedCommand.JoinRoom(
+                                    roomAlias,
+                                    textMessage.substring(Command.JOIN_ROOM.length + roomAlias.length)
+                                            .trim()
+                                            .takeIf { it.isNotBlank() }
+                            )
+                        } else {
+                            ParsedCommand.ErrorSyntax(Command.JOIN_ROOM)
+                        }
                     } else {
                         ParsedCommand.ErrorSyntax(Command.JOIN_ROOM)
                     }
                 }
                 Command.PART.command                   -> {
-                    val roomAlias = textMessage.substring(Command.PART.command.length).trim()
+                    if (messageParts.size >= 2) {
+                        val roomAlias = messageParts[1]
 
                         if (roomAlias.isNotEmpty()) {
-                        ParsedCommand.PartRoom(roomAlias)
+                            ParsedCommand.PartRoom(
+                                    roomAlias,
+                                    textMessage.substring(Command.PART.length + roomAlias.length)
+                                            .trim()
+                                            .takeIf { it.isNotBlank() }
+                            )
+                        } else {
+                            ParsedCommand.ErrorSyntax(Command.PART)
+                        }
                     } else {
                         ParsedCommand.ErrorSyntax(Command.PART)
                     }
                 }
                 Command.INVITE.command                 -> {
-                    if (messageParts.size == 2) {
+                    if (messageParts.size >= 2) {
                         val userId = messageParts[1]
 
                         if (MatrixPatterns.isUserId(userId)) {
-                            ParsedCommand.Invite(userId)
+                            ParsedCommand.Invite(
+                                    userId,
+                                    textMessage.substring(Command.INVITE.length + userId.length)
+                                            .trim()
+                                            .takeIf { it.isNotBlank() }
+                            )
                         } else {
                             ParsedCommand.ErrorSyntax(Command.INVITE)
                         }
@@ -114,12 +137,14 @@ object CommandParser {
                 Command.KICK_USER.command              -> {
                     if (messageParts.size >= 2) {
                         val userId = messageParts[1]
-                        if (MatrixPatterns.isUserId(userId)) {
-                            val reason = textMessage.substring(Command.KICK_USER.command.length
-                                    + 1
-                                    + userId.length).trim()
 
-                            ParsedCommand.KickUser(userId, reason)
+                        if (MatrixPatterns.isUserId(userId)) {
+                            ParsedCommand.KickUser(
+                                    userId,
+                                    textMessage.substring(Command.KICK_USER.length + userId.length)
+                                            .trim()
+                                            .takeIf { it.isNotBlank() }
+                            )
                         } else {
                             ParsedCommand.ErrorSyntax(Command.KICK_USER)
                         }
@@ -130,12 +155,14 @@ object CommandParser {
                 Command.BAN_USER.command               -> {
                     if (messageParts.size >= 2) {
                         val userId = messageParts[1]
-                        if (MatrixPatterns.isUserId(userId)) {
-                            val reason = textMessage.substring(Command.BAN_USER.command.length
-                                    + 1
-                                    + userId.length).trim()
 
-                            ParsedCommand.BanUser(userId, reason)
+                        if (MatrixPatterns.isUserId(userId)) {
+                            ParsedCommand.BanUser(
+                                    userId,
+                                    textMessage.substring(Command.BAN_USER.length + userId.length)
+                                            .trim()
+                                            .takeIf { it.isNotBlank() }
+                            )
                         } else {
                             ParsedCommand.ErrorSyntax(Command.BAN_USER)
                         }
@@ -144,11 +171,16 @@ object CommandParser {
                     }
                 }
                 Command.UNBAN_USER.command             -> {
-                    if (messageParts.size == 2) {
+                    if (messageParts.size >= 2) {
                         val userId = messageParts[1]
 
                         if (MatrixPatterns.isUserId(userId)) {
-                            ParsedCommand.UnbanUser(userId)
+                            ParsedCommand.UnbanUser(
+                                    userId,
+                                    textMessage.substring(Command.UNBAN_USER.length + userId.length)
+                                            .trim()
+                                            .takeIf { it.isNotBlank() }
+                            )
                         } else {
                             ParsedCommand.ErrorSyntax(Command.UNBAN_USER)
                         }

vector/src/main/java/im/vector/riotx/features/command/ParsedCommand.kt

@@ -34,14 +34,14 @@ sealed class ParsedCommand {
     // Valid commands:
 
     class SendEmote(val message: CharSequence) : ParsedCommand()
-    class BanUser(val userId: String, val reason: String) : ParsedCommand()
-    class UnbanUser(val userId: String) : ParsedCommand()
+    class BanUser(val userId: String, val reason: String?) : ParsedCommand()
+    class UnbanUser(val userId: String, val reason: String?) : ParsedCommand()
     class SetUserPowerLevel(val userId: String, val powerLevel: Int) : ParsedCommand()
-    class Invite(val userId: String) : ParsedCommand()
-    class JoinRoom(val roomAlias: String) : ParsedCommand()
-    class PartRoom(val roomAlias: String) : ParsedCommand()
+    class Invite(val userId: String, val reason: String?) : ParsedCommand()
+    class JoinRoom(val roomAlias: String, val reason: String?) : ParsedCommand()
+    class PartRoom(val roomAlias: String, val reason: String?) : ParsedCommand()
     class ChangeTopic(val topic: String) : ParsedCommand()
-    class KickUser(val userId: String, val reason: String) : ParsedCommand()
+    class KickUser(val userId: String, val reason: String?) : ParsedCommand()
     class ChangeDisplayName(val displayName: String) : ParsedCommand()
     class SetMarkdown(val enable: Boolean) : ParsedCommand()
     object ClearScalarToken : ParsedCommand()

vector/src/main/java/im/vector/riotx/features/crypto/keysbackup/settings/KeysBackupSettingsFragment.kt

@@ -21,6 +21,8 @@ import androidx.appcompat.app.AlertDialog
 import com.airbnb.mvrx.activityViewModel
 import com.airbnb.mvrx.withState
 import im.vector.riotx.R
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.platform.VectorBaseFragment
 import im.vector.riotx.features.crypto.keysbackup.restore.KeysBackupRestoreActivity
 import im.vector.riotx.features.crypto.keysbackup.setup.KeysBackupSetupActivity
@@ -37,12 +39,16 @@ class KeysBackupSettingsFragment @Inject constructor(private val keysBackupSetti
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-
-        keysBackupSettingsRecyclerView.setController(keysBackupSettingsRecyclerViewController)
-
+        keysBackupSettingsRecyclerView.configureWith(keysBackupSettingsRecyclerViewController)
         keysBackupSettingsRecyclerViewController.listener = this
     }
 
+    override fun onDestroyView() {
+        keysBackupSettingsRecyclerViewController.listener = null
+        keysBackupSettingsRecyclerView.cleanup()
+        super.onDestroyView()
+    }
+
     override fun invalidate() = withState(viewModel) { state ->
         keysBackupSettingsRecyclerViewController.setData(state)
     }

vector/src/main/java/im/vector/riotx/features/home/HomeDetailFragment.kt

@@ -25,7 +25,6 @@ import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
 import com.google.android.material.bottomnavigation.BottomNavigationItemView
 import com.google.android.material.bottomnavigation.BottomNavigationMenuView
-import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.crypto.keysbackup.KeysBackupState
 import im.vector.matrix.android.api.session.group.model.GroupSummary
 import im.vector.riotx.R
@@ -46,7 +45,6 @@ private const val INDEX_PEOPLE = 1
 private const val INDEX_ROOMS = 2
 
 class HomeDetailFragment @Inject constructor(
-        private val session: Session,
         val homeDetailViewModelFactory: HomeDetailViewModel.Factory,
         private val avatarRenderer: AvatarRenderer
 ) : VectorBaseFragment(), KeysBackupBanner.Delegate {
@@ -56,9 +54,7 @@ class HomeDetailFragment @Inject constructor(
     private val viewModel: HomeDetailViewModel by fragmentViewModel()
     private lateinit var sharedActionViewModel: HomeSharedActionViewModel
 
-    override fun getLayoutResId(): Int {
-        return R.layout.fragment_home_detail
-    }
+    override fun getLayoutResId() = R.layout.fragment_home_detail
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)

vector/src/main/java/im/vector/riotx/features/home/createdirect/CreateDirectRoomDirectoryUsersFragment.kt

@@ -23,9 +23,7 @@ import com.airbnb.mvrx.withState
 import com.jakewharton.rxbinding3.widget.textChanges
 import im.vector.matrix.android.api.session.user.model.User
 import im.vector.riotx.R
-import im.vector.riotx.core.extensions.hideKeyboard
-import im.vector.riotx.core.extensions.setupAsSearch
-import im.vector.riotx.core.extensions.showKeyboard
+import im.vector.riotx.core.extensions.*
 import im.vector.riotx.core.platform.VectorBaseFragment
 import kotlinx.android.synthetic.main.fragment_create_direct_room_directory_users.*
 import javax.inject.Inject
@@ -48,10 +46,15 @@ class CreateDirectRoomDirectoryUsersFragment @Inject constructor(
         setupCloseView()
     }
 
+    override fun onDestroyView() {
+        recyclerView.cleanup()
+        directRoomController.callback = null
+        super.onDestroyView()
+    }
+
     private fun setupRecyclerView() {
-        recyclerView.setHasFixedSize(true)
         directRoomController.callback = this
-        recyclerView.setController(directRoomController)
+        recyclerView.configureWith(directRoomController)
     }
 
     private fun setupSearchByMatrixIdView() {

vector/src/main/java/im/vector/riotx/features/home/createdirect/CreateDirectRoomKnownUsersFragment.kt

@@ -31,9 +31,7 @@ import com.google.android.material.chip.ChipGroup
 import com.jakewharton.rxbinding3.widget.textChanges
 import im.vector.matrix.android.api.session.user.model.User
 import im.vector.riotx.R
-import im.vector.riotx.core.extensions.hideKeyboard
-import im.vector.riotx.core.extensions.observeEvent
-import im.vector.riotx.core.extensions.setupAsSearch
+import im.vector.riotx.core.extensions.*
 import im.vector.riotx.core.platform.VectorBaseFragment
 import im.vector.riotx.core.utils.DimensionConverter
 import kotlinx.android.synthetic.main.fragment_create_direct_room.*
@@ -67,6 +65,12 @@ class CreateDirectRoomKnownUsersFragment @Inject constructor(
         }
     }
 
+    override fun onDestroyView() {
+        knownUsersController.callback = null
+        recyclerView.cleanup()
+        super.onDestroyView()
+    }
+
     override fun onPrepareOptionsMenu(menu: Menu) {
         withState(viewModel) {
             val createMenuItem = menu.findItem(R.id.action_create_direct_room)
@@ -94,11 +98,10 @@ class CreateDirectRoomKnownUsersFragment @Inject constructor(
     }
 
     private fun setupRecyclerView() {
-        recyclerView.setHasFixedSize(true)
         // Don't activate animation as we might have way to much item animation when filtering
         recyclerView.itemAnimator = null
         knownUsersController.callback = this
-        recyclerView.setController(knownUsersController)
+        recyclerView.configureWith(knownUsersController)
     }
 
     private fun setupFilterView() {

vector/src/main/java/im/vector/riotx/features/home/group/GroupListFragment.kt

@@ -23,11 +23,13 @@ import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.fragmentViewModel
 import im.vector.matrix.android.api.session.group.model.GroupSummary
 import im.vector.riotx.R
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.extensions.observeEvent
 import im.vector.riotx.core.platform.StateView
 import im.vector.riotx.core.platform.VectorBaseFragment
-import im.vector.riotx.features.home.HomeSharedActionViewModel
 import im.vector.riotx.features.home.HomeActivitySharedAction
+import im.vector.riotx.features.home.HomeSharedActionViewModel
 import kotlinx.android.synthetic.main.fragment_group_list.*
 import javax.inject.Inject
 
@@ -45,14 +47,20 @@ class GroupListFragment @Inject constructor(
         super.onViewCreated(view, savedInstanceState)
         sharedActionViewModel = activityViewModelProvider.get(HomeSharedActionViewModel::class.java)
         groupController.callback = this
-        stateView.contentView = groupListEpoxyRecyclerView
-        groupListEpoxyRecyclerView.setController(groupController)
+        stateView.contentView = groupListView
+        groupListView.configureWith(groupController)
         viewModel.subscribe { renderState(it) }
         viewModel.openGroupLiveData.observeEvent(this) {
             sharedActionViewModel.post(HomeActivitySharedAction.OpenGroup)
         }
     }
 
+    override fun onDestroyView() {
+        groupController.callback = null
+        groupListView.cleanup()
+        super.onDestroyView()
+    }
+
     private fun renderState(state: GroupListViewState) {
         when (state.asyncGroups) {
             is Incomplete -> stateView.state = StateView.State.Loading

vector/src/main/java/im/vector/riotx/features/home/room/breadcrumbs/BreadcrumbsAnimator.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.breadcrumbs
+
+import androidx.recyclerview.widget.DefaultItemAnimator
+
+private const val ANIM_DURATION_IN_MILLIS = 200L
+
+class BreadcrumbsAnimator : DefaultItemAnimator() {
+
+    init {
+        addDuration = ANIM_DURATION_IN_MILLIS
+        removeDuration = ANIM_DURATION_IN_MILLIS
+        moveDuration = ANIM_DURATION_IN_MILLIS
+        changeDuration = ANIM_DURATION_IN_MILLIS
+    }
+}

vector/src/main/java/im/vector/riotx/features/home/room/breadcrumbs/BreadcrumbsController.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.breadcrumbs
+
+import android.view.View
+import com.airbnb.epoxy.EpoxyController
+import im.vector.riotx.core.utils.DebouncedClickListener
+import im.vector.riotx.features.home.AvatarRenderer
+import javax.inject.Inject
+
+class BreadcrumbsController @Inject constructor(
+        private val avatarRenderer: AvatarRenderer
+) : EpoxyController() {
+
+    var listener: Listener? = null
+
+    private var viewState: BreadcrumbsViewState? = null
+
+    init {
+        // We are requesting a model build directly as the first build of epoxy is on the main thread.
+        // It avoids to build the whole list of breadcrumbs on the main thread.
+        requestModelBuild()
+    }
+
+    fun update(viewState: BreadcrumbsViewState) {
+        this.viewState = viewState
+        requestModelBuild()
+    }
+
+    override fun buildModels() {
+        val safeViewState = viewState ?: return
+
+        // An empty breadcrumbs list can only be temporary because when entering in a room,
+        // this one is added to the breadcrumbs
+
+        safeViewState.asyncBreadcrumbs.invoke()
+                ?.forEach {
+                    breadcrumbsItem {
+                        id(it.roomId)
+                        avatarRenderer(avatarRenderer)
+                        roomId(it.roomId)
+                        roomName(it.displayName)
+                        avatarUrl(it.avatarUrl)
+                        unreadNotificationCount(it.notificationCount)
+                        showHighlighted(it.highlightCount > 0)
+                        hasUnreadMessage(it.hasUnreadMessages)
+                        hasDraft(it.userDrafts.isNotEmpty())
+                        itemClickListener(
+                                DebouncedClickListener(View.OnClickListener { _ ->
+                                    listener?.onBreadcrumbClicked(it.roomId)
+                                })
+                        )
+                    }
+                }
+    }
+
+    interface Listener {
+        fun onBreadcrumbClicked(roomId: String)
+    }
+}

vector/src/main/java/im/vector/riotx/features/home/room/breadcrumbs/BreadcrumbsFragment.kt

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.breadcrumbs
+
+import android.os.Bundle
+import android.view.View
+import com.airbnb.mvrx.fragmentViewModel
+import im.vector.riotx.R
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
+import im.vector.riotx.core.platform.VectorBaseFragment
+import im.vector.riotx.features.home.room.detail.RoomDetailSharedAction
+import im.vector.riotx.features.home.room.detail.RoomDetailSharedActionViewModel
+import kotlinx.android.synthetic.main.fragment_breadcrumbs.*
+import javax.inject.Inject
+
+class BreadcrumbsFragment @Inject constructor(
+        private val breadcrumbsController: BreadcrumbsController,
+        val breadcrumbsViewModelFactory: BreadcrumbsViewModel.Factory
+) : VectorBaseFragment(), BreadcrumbsController.Listener {
+
+    private lateinit var sharedActionViewModel: RoomDetailSharedActionViewModel
+    private val breadcrumbsViewModel: BreadcrumbsViewModel by fragmentViewModel()
+
+    override fun getLayoutResId() = R.layout.fragment_breadcrumbs
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        setupRecyclerView()
+        sharedActionViewModel = activityViewModelProvider.get(RoomDetailSharedActionViewModel::class.java)
+
+        breadcrumbsViewModel.subscribe { renderState(it) }
+    }
+
+    override fun onDestroyView() {
+        breadcrumbsRecyclerView.cleanup()
+        super.onDestroyView()
+    }
+
+    private fun setupRecyclerView() {
+        breadcrumbsRecyclerView.configureWith(breadcrumbsController, BreadcrumbsAnimator(), hasFixedSize = false)
+        breadcrumbsController.listener = this
+    }
+
+    private fun renderState(state: BreadcrumbsViewState) {
+        breadcrumbsController.update(state)
+    }
+
+    // BreadcrumbsController.Listener **************************************************************
+
+    override fun onBreadcrumbClicked(roomId: String) {
+        sharedActionViewModel.post(RoomDetailSharedAction.SwitchToRoom(roomId))
+    }
+}

vector/src/main/java/im/vector/riotx/features/home/room/breadcrumbs/BreadcrumbsItem.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.breadcrumbs
+
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import androidx.core.view.isVisible
+import com.airbnb.epoxy.EpoxyAttribute
+import com.airbnb.epoxy.EpoxyModelClass
+import im.vector.riotx.R
+import im.vector.riotx.core.epoxy.VectorEpoxyHolder
+import im.vector.riotx.core.epoxy.VectorEpoxyModel
+import im.vector.riotx.features.home.AvatarRenderer
+import im.vector.riotx.features.home.room.list.UnreadCounterBadgeView
+
+@EpoxyModelClass(layout = R.layout.item_breadcrumbs)
+abstract class BreadcrumbsItem : VectorEpoxyModel<BreadcrumbsItem.Holder>() {
+
+    @EpoxyAttribute lateinit var avatarRenderer: AvatarRenderer
+    @EpoxyAttribute lateinit var roomId: String
+    @EpoxyAttribute lateinit var roomName: CharSequence
+    @EpoxyAttribute var avatarUrl: String? = null
+    @EpoxyAttribute var unreadNotificationCount: Int = 0
+    @EpoxyAttribute var showHighlighted: Boolean = false
+    @EpoxyAttribute var hasUnreadMessage: Boolean = false
+    @EpoxyAttribute var hasDraft: Boolean = false
+    @EpoxyAttribute var itemClickListener: View.OnClickListener? = null
+
+    override fun bind(holder: Holder) {
+        super.bind(holder)
+        holder.rootView.setOnClickListener(itemClickListener)
+        holder.unreadIndentIndicator.isVisible = hasUnreadMessage
+        avatarRenderer.render(avatarUrl, roomId, roomName.toString(), holder.avatarImageView)
+        holder.unreadCounterBadgeView.render(UnreadCounterBadgeView.State(unreadNotificationCount, showHighlighted))
+        holder.draftIndentIndicator.isVisible = hasDraft
+    }
+
+    class Holder : VectorEpoxyHolder() {
+        val unreadCounterBadgeView by bind<UnreadCounterBadgeView>(R.id.breadcrumbsUnreadCounterBadgeView)
+        val unreadIndentIndicator by bind<View>(R.id.breadcrumbsUnreadIndicator)
+        val draftIndentIndicator by bind<View>(R.id.breadcrumbsDraftBadge)
+        val avatarImageView by bind<ImageView>(R.id.breadcrumbsImageView)
+        val rootView by bind<ViewGroup>(R.id.breadcrumbsRoot)
+    }
+}

vector/src/main/java/im/vector/riotx/features/home/room/breadcrumbs/BreadcrumbsViewModel.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.breadcrumbs
+
+import com.airbnb.mvrx.FragmentViewModelContext
+import com.airbnb.mvrx.MvRxViewModelFactory
+import com.airbnb.mvrx.ViewModelContext
+import com.squareup.inject.assisted.Assisted
+import com.squareup.inject.assisted.AssistedInject
+import im.vector.matrix.android.api.session.Session
+import im.vector.matrix.rx.rx
+import im.vector.riotx.core.platform.EmptyAction
+import im.vector.riotx.core.platform.VectorViewModel
+import io.reactivex.schedulers.Schedulers
+
+class BreadcrumbsViewModel @AssistedInject constructor(@Assisted initialState: BreadcrumbsViewState,
+                                                       private val session: Session)
+    : VectorViewModel<BreadcrumbsViewState, EmptyAction>(initialState) {
+
+    @AssistedInject.Factory
+    interface Factory {
+        fun create(initialState: BreadcrumbsViewState): BreadcrumbsViewModel
+    }
+
+    companion object : MvRxViewModelFactory<BreadcrumbsViewModel, BreadcrumbsViewState> {
+
+        @JvmStatic
+        override fun create(viewModelContext: ViewModelContext, state: BreadcrumbsViewState): BreadcrumbsViewModel? {
+            val fragment: BreadcrumbsFragment = (viewModelContext as FragmentViewModelContext).fragment()
+            return fragment.breadcrumbsViewModelFactory.create(state)
+        }
+    }
+
+    init {
+        observeBreadcrumbs()
+    }
+
+    override fun handle(action: EmptyAction) {
+        // No op
+    }
+
+    // PRIVATE METHODS *****************************************************************************
+
+    private fun observeBreadcrumbs() {
+        session.rx()
+                .liveBreadcrumbs()
+                .observeOn(Schedulers.computation())
+                .execute { asyncBreadcrumbs ->
+                    copy(asyncBreadcrumbs = asyncBreadcrumbs)
+                }
+    }
+}

vector/src/main/java/im/vector/riotx/features/home/room/breadcrumbs/BreadcrumbsViewState.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.breadcrumbs
+
+import com.airbnb.mvrx.Async
+import com.airbnb.mvrx.MvRxState
+import com.airbnb.mvrx.Uninitialized
+import im.vector.matrix.android.api.session.room.model.RoomSummary
+
+data class BreadcrumbsViewState(
+        val asyncBreadcrumbs: Async<List<RoomSummary>> = Uninitialized
+) : MvRxState

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailActivity.kt

@@ -20,17 +20,25 @@ import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import androidx.appcompat.widget.Toolbar
+import androidx.core.view.GravityCompat
+import androidx.drawerlayout.widget.DrawerLayout
 import im.vector.riotx.R
+import im.vector.riotx.core.extensions.hideKeyboard
 import im.vector.riotx.core.extensions.replaceFragment
 import im.vector.riotx.core.platform.ToolbarConfigurable
 import im.vector.riotx.core.platform.VectorBaseActivity
+import im.vector.riotx.features.home.room.breadcrumbs.BreadcrumbsFragment
+import kotlinx.android.synthetic.main.activity_room_detail.*
 import kotlinx.android.synthetic.main.merge_overlay_waiting_view.*
 
 class RoomDetailActivity : VectorBaseActivity(), ToolbarConfigurable {
 
-    override fun getLayoutRes(): Int {
-        return R.layout.activity_room_detail
-    }
+    override fun getLayoutRes() = R.layout.activity_room_detail
+
+    private lateinit var sharedActionViewModel: RoomDetailSharedActionViewModel
+
+    // Simple filter
+    private var currentRoomId: String? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -38,14 +46,57 @@ class RoomDetailActivity : VectorBaseActivity(), ToolbarConfigurable {
         if (isFirstCreation()) {
             val roomDetailArgs: RoomDetailArgs = intent?.extras?.getParcelable(EXTRA_ROOM_DETAIL_ARGS)
                     ?: return
+            currentRoomId = roomDetailArgs.roomId
             replaceFragment(R.id.roomDetailContainer, RoomDetailFragment::class.java, roomDetailArgs)
+            replaceFragment(R.id.roomDetailDrawerContainer, BreadcrumbsFragment::class.java)
         }
+
+        sharedActionViewModel = viewModelProvider.get(RoomDetailSharedActionViewModel::class.java)
+
+        sharedActionViewModel
+                .observe()
+                .subscribe { sharedAction ->
+                    when (sharedAction) {
+                        is RoomDetailSharedAction.SwitchToRoom -> switchToRoom(sharedAction)
+                    }
+                }
+                .disposeOnDestroy()
+
+        drawerLayout.addDrawerListener(drawerListener)
+    }
+
+    private fun switchToRoom(switchToRoom: RoomDetailSharedAction.SwitchToRoom) {
+        drawerLayout.closeDrawer(GravityCompat.START)
+        // Do not replace the Fragment if it's the same roomId
+        if (currentRoomId != switchToRoom.roomId) {
+            currentRoomId = switchToRoom.roomId
+            replaceFragment(R.id.roomDetailContainer, RoomDetailFragment::class.java, RoomDetailArgs(switchToRoom.roomId))
+        }
+    }
+
+    override fun onDestroy() {
+        drawerLayout.removeDrawerListener(drawerListener)
+        super.onDestroy()
     }
 
     override fun configure(toolbar: Toolbar) {
         configureToolbar(toolbar)
     }
 
+    private val drawerListener = object : DrawerLayout.SimpleDrawerListener() {
+        override fun onDrawerStateChanged(newState: Int) {
+            hideKeyboard()
+        }
+    }
+
+    override fun onBackPressed() {
+        if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
+            drawerLayout.closeDrawer(GravityCompat.START)
+        } else {
+            super.onBackPressed()
+        }
+    }
+
     companion object {
 
         private const val EXTRA_ROOM_DETAIL_ARGS = "EXTRA_ROOM_DETAIL_ARGS"

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt

@@ -46,6 +46,7 @@ import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
 import com.airbnb.epoxy.EpoxyModel
 import com.airbnb.epoxy.EpoxyVisibilityTracker
+import com.airbnb.epoxy.OnModelBuildFinishedListener
 import com.airbnb.mvrx.*
 import com.github.piasy.biv.BigImageViewer
 import com.github.piasy.biv.loader.ImageLoader
@@ -69,10 +70,7 @@ import im.vector.riotx.R
 import im.vector.riotx.core.dialogs.withColoredButton
 import im.vector.riotx.core.epoxy.LayoutManagerStateRestorer
 import im.vector.riotx.core.error.ErrorFormatter
-import im.vector.riotx.core.extensions.hideKeyboard
-import im.vector.riotx.core.extensions.observeEvent
-import im.vector.riotx.core.extensions.setTextOrHide
-import im.vector.riotx.core.extensions.showKeyboard
+import im.vector.riotx.core.extensions.*
 import im.vector.riotx.core.files.addEntryToDownloadManager
 import im.vector.riotx.core.glide.GlideApp
 import im.vector.riotx.core.platform.VectorBaseFragment
@@ -193,6 +191,8 @@ class RoomDetailFragment @Inject constructor(
 
     private lateinit var sharedActionViewModel: MessageSharedActionViewModel
     private lateinit var layoutManager: LinearLayoutManager
+    private var modelBuildListener: OnModelBuildFinishedListener? = null
+
     private lateinit var attachmentsHelper: AttachmentsHelper
     private lateinit var keyboardStateUtils: KeyboardStateUtils
 
@@ -286,13 +286,16 @@ class RoomDetailFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
+        timelineEventController.callback = null
+        timelineEventController.removeModelBuildListener(modelBuildListener)
+        modelBuildListener = null
+        debouncer.cancelAll()
+        recyclerView.cleanup()
         super.onDestroyView()
-        recyclerView.adapter = null
     }
 
     override fun onDestroy() {
         roomDetailViewModel.handle(RoomDetailAction.ExitTrackingUnreadMessagesState)
-        debouncer.cancelAll()
         super.onDestroy()
     }
 
@@ -447,11 +450,7 @@ class RoomDetailFragment @Inject constructor(
         if (!hasBeenHandled && resultCode == RESULT_OK && data != null) {
             when (requestCode) {
                 REACTION_SELECT_REQUEST_CODE -> {
-                    val eventId = data.getStringExtra(EmojiReactionPickerActivity.EXTRA_EVENT_ID)
-                            ?: return
-                    val reaction = data.getStringExtra(EmojiReactionPickerActivity.EXTRA_REACTION_RESULT)
-                            ?: return
-                    // TODO check if already reacted with that?
+                    val (eventId, reaction) = EmojiReactionPickerActivity.getOutput(data) ?: return
                     roomDetailViewModel.handle(RoomDetailAction.SendReaction(eventId, reaction))
                 }
             }
@@ -470,13 +469,14 @@ class RoomDetailFragment @Inject constructor(
         recyclerView.layoutManager = layoutManager
         recyclerView.itemAnimator = null
         recyclerView.setHasFixedSize(true)
-        timelineEventController.addModelBuildListener {
+        modelBuildListener = OnModelBuildFinishedListener {
             it.dispatchTo(stateRestorer)
             it.dispatchTo(scrollOnNewMessageCallback)
             it.dispatchTo(scrollOnHighlightedEventCallback)
             updateJumpToReadMarkerViewVisibility()
             updateJumpToBottomViewVisibility()
         }
+        timelineEventController.addModelBuildListener(modelBuildListener)
         recyclerView.adapter = timelineEventController.adapter
 
         recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
@@ -521,7 +521,8 @@ class RoomDetailFragment @Inject constructor(
         }
     }
 
-    private fun updateJumpToReadMarkerViewVisibility() = jumpToReadMarkerView.post {
+    private fun updateJumpToReadMarkerViewVisibility() {
+        jumpToReadMarkerView?.post {
             withState(roomDetailViewModel) {
                 val showJumpToUnreadBanner = when (it.unreadState) {
                     UnreadState.Unknown,
@@ -544,6 +545,7 @@ class RoomDetailFragment @Inject constructor(
                 jumpToReadMarkerView.isVisible = showJumpToUnreadBanner
             }
         }
+    }
 
     private fun updateJumpToBottomViewVisibility() {
         debouncer.debounce("jump_to_bottom_visibility", 250, Runnable {
@@ -1181,7 +1183,7 @@ class RoomDetailFragment @Inject constructor(
                 && userId == session.myUserId) {
             // Empty composer, current user: start an emote
             composerLayout.composerEditText.setText(Command.EMOTE.command + " ")
-            composerLayout.composerEditText.setSelection(Command.EMOTE.command.length + 1)
+            composerLayout.composerEditText.setSelection(Command.EMOTE.length)
         } else {
             val roomMember = roomDetailViewModel.getMember(userId)
             // TODO move logic outside of fragment

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailSharedAction.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.detail
+
+import im.vector.riotx.core.platform.VectorSharedAction
+
+/**
+ * Supported navigation actions for [RoomDetailActivity]
+ */
+sealed class RoomDetailSharedAction : VectorSharedAction {
+    data class SwitchToRoom(val roomId: String) : RoomDetailSharedAction()
+}

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailSharedActionViewModel.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package im.vector.riotx.features.home.room.detail
+
+import im.vector.riotx.core.platform.VectorSharedActionViewModel
+import javax.inject.Inject
+
+/**
+ * Activity shared view model
+ */
+class RoomDetailSharedActionViewModel @Inject constructor() : VectorSharedActionViewModel<RoomDetailSharedAction>()

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailViewModel.kt

@@ -143,6 +143,9 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
         timeline.addListener(this)
         timeline.start()
         setState { copy(timeline = this@RoomDetailViewModel.timeline) }
+
+        // Inform the SDK that the room is displayed
+        session.onRoomDisplayed(initialState.roomId)
     }
 
     override fun handle(action: RoomDetailAction) {
@@ -197,9 +200,10 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
         invisibleEventsObservable.accept(action)
     }
 
-    fun getMember(userId: String) : RoomMember? {
+    fun getMember(userId: String): RoomMember? {
         return room.getRoomMember(userId)
     }
+
     /**
      * Convert a send mode to a draft and save the draft
      */
@@ -263,7 +267,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
                 }
             }
             session.rx()
-                    .joinRoom(roomId, viaServer)
+                    .joinRoom(roomId, viaServers = viaServer)
                     .map { roomId }
                     .execute {
                         copy(tombstoneEventHandling = it)
@@ -484,7 +488,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
     private fun handleInviteSlashCommand(invite: ParsedCommand.Invite) {
         _sendMessageResultLiveData.postLiveEvent(SendMessageResult.SlashCommandHandled())
 
-        room.invite(invite.userId, object : MatrixCallback<Unit> {
+        room.invite(invite.userId, invite.reason, object : MatrixCallback<Unit> {
             override fun onSuccess(data: Unit) {
                 _sendMessageResultLiveData.postLiveEvent(SendMessageResult.SlashCommandResultOk)
             }
@@ -550,7 +554,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
     }
 
     private fun handleRejectInvite() {
-        room.leave(object : MatrixCallback<Unit> {})
+        room.leave(null, object : MatrixCallback<Unit> {})
     }
 
     private fun handleAcceptInvite() {
@@ -859,7 +863,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
 
     override fun onCleared() {
         timeline.dispose()
-        timeline.removeAllListeners()
+        timeline.removeListener(this)
         super.onCleared()
     }
 }

vector/src/main/java/im/vector/riotx/features/home/room/detail/readreceipts/DisplayReadReceiptsBottomSheet.kt

@@ -21,7 +21,6 @@ import android.os.Parcelable
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
 import butterknife.ButterKnife
@@ -29,6 +28,8 @@ import com.airbnb.mvrx.MvRx
 import com.airbnb.mvrx.args
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.riotx.features.home.room.detail.timeline.item.ReadReceiptData
 import kotlinx.android.parcel.Parcelize
@@ -52,8 +53,8 @@ class DisplayReadReceiptsBottomSheet : VectorBaseBottomSheetDialogFragment() {
 
     private val displayReadReceiptArgs: DisplayReadReceiptArgs by args()
 
-    override fun injectWith(screenComponent: ScreenComponent) {
-        screenComponent.inject(this)
+    override fun injectWith(injector: ScreenComponent) {
+        injector.inject(this)
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -64,12 +65,16 @@ class DisplayReadReceiptsBottomSheet : VectorBaseBottomSheetDialogFragment() {
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
-        recyclerView.layoutManager = LinearLayoutManager(context, RecyclerView.VERTICAL, false)
-        recyclerView.adapter = epoxyController.adapter
+        recyclerView.configureWith(epoxyController, hasFixedSize = false)
         bottomSheetTitle.text = getString(R.string.seen_by)
         epoxyController.setData(displayReadReceiptArgs.readReceipts)
     }
 
+    override fun onDestroyView() {
+        recyclerView.cleanup()
+        super.onDestroyView()
+    }
+
     // we are not using state for this one as it's static, so no need to override invalidate()
 
     companion object {

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/TimelineEventController.kt

@@ -25,7 +25,6 @@ import androidx.recyclerview.widget.RecyclerView
 import com.airbnb.epoxy.EpoxyController
 import com.airbnb.epoxy.EpoxyModel
 import com.airbnb.epoxy.VisibilityState
-import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.room.model.message.*
 import im.vector.matrix.android.api.session.room.timeline.Timeline
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
@@ -44,7 +43,7 @@ import org.threeten.bp.LocalDateTime
 import javax.inject.Inject
 
 class TimelineEventController @Inject constructor(private val dateFormatter: VectorDateFormatter,
-                                                  private val session: Session,
+                                                  private val contentUploadStateTrackerBinder: ContentUploadStateTrackerBinder,
                                                   private val timelineItemFactory: TimelineItemFactory,
                                                   private val timelineMediaSizeProvider: TimelineMediaSizeProvider,
                                                   private val mergedHeaderItemFactory: MergedHeaderItemFactory,
@@ -209,6 +208,13 @@ class TimelineEventController @Inject constructor(private val dateFormatter: Vec
         timelineMediaSizeProvider.recyclerView = recyclerView
     }
 
+    override fun onDetachedFromRecyclerView(recyclerView: RecyclerView) {
+        timelineMediaSizeProvider.recyclerView = null
+        contentUploadStateTrackerBinder.clear()
+        timeline?.removeListener(this)
+        super.onDetachedFromRecyclerView(recyclerView)
+    }
+
     override fun buildModels() {
         val timestamp = System.currentTimeMillis()
         showingForwardLoader = LoadingItem_()

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/action/MessageActionsAnimator.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.home.room.detail.timeline.action
+
+import androidx.recyclerview.widget.DefaultItemAnimator
+
+private const val ANIM_DURATION_IN_MILLIS = 300L
+
+/**
+ * We only want to animate the expand of the "Report content" submenu
+ */
+class MessageActionsAnimator : DefaultItemAnimator() {
+
+    init {
+        addDuration = ANIM_DURATION_IN_MILLIS
+        removeDuration = 0
+        moveDuration = 0
+        changeDuration = 0
+    }
+}

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/action/MessageActionsBottomSheet.kt

@@ -19,7 +19,6 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
 import butterknife.ButterKnife
@@ -27,6 +26,8 @@ import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.riotx.features.home.room.detail.timeline.item.MessageInformationData
 import javax.inject.Inject
@@ -48,8 +49,8 @@ class MessageActionsBottomSheet : VectorBaseBottomSheetDialogFragment(), Message
 
     private lateinit var sharedActionViewModel: MessageSharedActionViewModel
 
-    override fun injectWith(screenComponent: ScreenComponent) {
-        screenComponent.inject(this)
+    override fun injectWith(injector: ScreenComponent) {
+        injector.inject(this)
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -61,13 +62,17 @@ class MessageActionsBottomSheet : VectorBaseBottomSheetDialogFragment(), Message
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
         sharedActionViewModel = activityViewModelProvider.get(MessageSharedActionViewModel::class.java)
-        recyclerView.layoutManager = LinearLayoutManager(requireContext(), RecyclerView.VERTICAL, false)
-        recyclerView.adapter = messageActionsEpoxyController.adapter
+        recyclerView.configureWith(messageActionsEpoxyController, hasFixedSize = false)
         // Disable item animation
         recyclerView.itemAnimator = null
         messageActionsEpoxyController.listener = this
     }
 
+    override fun onDestroyView() {
+        recyclerView.cleanup()
+        super.onDestroyView()
+    }
+
     override fun onUrlClicked(url: String): Boolean {
         sharedActionViewModel.post(EventSharedAction.OnUrlClicked(url))
         // Always consume
@@ -83,6 +88,10 @@ class MessageActionsBottomSheet : VectorBaseBottomSheetDialogFragment(), Message
     override fun didSelectMenuAction(eventAction: EventSharedAction) {
         if (eventAction is EventSharedAction.ReportContent) {
             // Toggle report menu
+            // Enable item animation
+            if (recyclerView.itemAnimator == null) {
+                recyclerView.itemAnimator = MessageActionsAnimator()
+            }
             viewModel.handle(MessageActionsAction.ToggleReportMenu)
         } else {
             sharedActionViewModel.post(eventAction)

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/edithistory/ViewEditHistoryBottomSheet.kt

@@ -19,9 +19,6 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.LinearLayout
-import androidx.recyclerview.widget.DividerItemDecoration
-import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
 import butterknife.ButterKnife
@@ -30,6 +27,8 @@ import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.riotx.features.home.room.detail.timeline.action.TimelineEventFragmentArgs
 import im.vector.riotx.features.home.room.detail.timeline.item.MessageInformationData
@@ -54,8 +53,8 @@ class ViewEditHistoryBottomSheet : VectorBaseBottomSheetDialogFragment() {
         ViewEditHistoryEpoxyController(requireContext(), viewModel.dateFormatter, eventHtmlRenderer)
     }
 
-    override fun injectWith(screenComponent: ScreenComponent) {
-        screenComponent.inject(this)
+    override fun injectWith(injector: ScreenComponent) {
+        injector.inject(this)
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -66,13 +65,18 @@ class ViewEditHistoryBottomSheet : VectorBaseBottomSheetDialogFragment() {
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
-        recyclerView.adapter = epoxyController.adapter
-        recyclerView.layoutManager = LinearLayoutManager(context, RecyclerView.VERTICAL, false)
-        val dividerItemDecoration = DividerItemDecoration(requireContext(), LinearLayout.VERTICAL)
-        recyclerView.addItemDecoration(dividerItemDecoration)
+        recyclerView.configureWith(
+                epoxyController,
+                showDivider = true,
+                hasFixedSize = false)
         bottomSheetTitle.text = context?.getString(R.string.message_edits)
     }
 
+    override fun onDestroyView() {
+        recyclerView.cleanup()
+        super.onDestroyView()
+    }
+
     override fun invalidate() = withState(viewModel) {
         epoxyController.setData(it)
         super.invalidate()

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/edithistory/ViewEditHistoryEpoxyController.kt

@@ -28,17 +28,16 @@ import im.vector.matrix.android.api.session.events.model.toModel
 import im.vector.matrix.android.api.session.room.model.message.MessageTextContent
 import im.vector.matrix.android.api.util.ContentUtils.extractUsefulTextFromReply
 import im.vector.riotx.R
+import im.vector.riotx.core.date.VectorDateFormatter
 import im.vector.riotx.core.extensions.localDateTime
 import im.vector.riotx.core.ui.list.genericFooterItem
 import im.vector.riotx.core.ui.list.genericItem
 import im.vector.riotx.core.ui.list.genericItemHeader
 import im.vector.riotx.core.ui.list.genericLoaderItem
-import im.vector.riotx.core.date.VectorDateFormatter
 import im.vector.riotx.features.html.EventHtmlRenderer
 import me.gujun.android.span.span
 import name.fraser.neil.plaintext.diff_match_patch
-import timber.log.Timber
-import java.util.Calendar
+import java.util.*
 
 /**
  * Epoxy controller for edit history list
@@ -104,9 +103,7 @@ class ViewEditHistoryEpoxyController(private val context: Context,
                             ?: nContent.first
                     val dmp = diff_match_patch()
                     val diff = dmp.diff_main(nextBody.toString(), body.toString())
-                    Timber.e("#### Diff: $diff")
                     dmp.diff_cleanupSemantic(diff)
-                    Timber.e("#### Diff: $diff")
                     spannedDiff = span {
                         diff.map {
                             when (it.operation) {

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/format/NoticeEventFormatter.kt

@@ -19,14 +19,7 @@ package im.vector.riotx.features.home.room.detail.timeline.format
 import im.vector.matrix.android.api.session.events.model.Event
 import im.vector.matrix.android.api.session.events.model.EventType
 import im.vector.matrix.android.api.session.events.model.toModel
-import im.vector.matrix.android.api.session.room.model.Membership
-import im.vector.matrix.android.api.session.room.model.RoomHistoryVisibility
-import im.vector.matrix.android.api.session.room.model.RoomHistoryVisibilityContent
-import im.vector.matrix.android.api.session.room.model.RoomJoinRules
-import im.vector.matrix.android.api.session.room.model.RoomJoinRulesContent
-import im.vector.matrix.android.api.session.room.model.RoomMember
-import im.vector.matrix.android.api.session.room.model.RoomNameContent
-import im.vector.matrix.android.api.session.room.model.RoomTopicContent
+import im.vector.matrix.android.api.session.room.model.*
 import im.vector.matrix.android.api.session.room.model.call.CallInviteContent
 import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
 import im.vector.riotx.R
@@ -36,7 +29,7 @@ import timber.log.Timber
 import javax.inject.Inject
 
 class NoticeEventFormatter @Inject constructor(private val sessionHolder: ActiveSessionHolder,
-                                               private val stringProvider: StringProvider) {
+                                               private val sp: StringProvider) {
 
     fun format(timelineEvent: TimelineEvent): CharSequence? {
         return when (val type = timelineEvent.root.getClearType()) {
@@ -84,36 +77,35 @@ class NoticeEventFormatter @Inject constructor(private val sessionHolder: Active
     private fun formatRoomNameEvent(event: Event, senderName: String?): CharSequence? {
         val content = event.getClearContent().toModel<RoomNameContent>() ?: return null
         return if (content.name.isNullOrBlank()) {
-            stringProvider.getString(R.string.notice_room_name_removed, senderName)
+            sp.getString(R.string.notice_room_name_removed, senderName)
         } else {
-            stringProvider.getString(R.string.notice_room_name_changed, senderName, content.name)
+            sp.getString(R.string.notice_room_name_changed, senderName, content.name)
         }
     }
 
     private fun formatRoomTombstoneEvent(senderName: String?): CharSequence? {
-        return stringProvider.getString(R.string.notice_room_update, senderName)
+        return sp.getString(R.string.notice_room_update, senderName)
     }
 
     private fun formatRoomTopicEvent(event: Event, senderName: String?): CharSequence? {
         val content = event.getClearContent().toModel<RoomTopicContent>() ?: return null
         return if (content.topic.isNullOrEmpty()) {
-            stringProvider.getString(R.string.notice_room_topic_removed, senderName)
+            sp.getString(R.string.notice_room_topic_removed, senderName)
         } else {
-            stringProvider.getString(R.string.notice_room_topic_changed, senderName, content.topic)
+            sp.getString(R.string.notice_room_topic_changed, senderName, content.topic)
         }
     }
 
     private fun formatRoomHistoryVisibilityEvent(event: Event, senderName: String?): CharSequence? {
-        val historyVisibility = event.getClearContent().toModel<RoomHistoryVisibilityContent>()?.historyVisibility
-                                ?: return null
+        val historyVisibility = event.getClearContent().toModel<RoomHistoryVisibilityContent>()?.historyVisibility ?: return null
 
         val formattedVisibility = when (historyVisibility) {
-            RoomHistoryVisibility.SHARED         -> stringProvider.getString(R.string.notice_room_visibility_shared)
-            RoomHistoryVisibility.INVITED        -> stringProvider.getString(R.string.notice_room_visibility_invited)
-            RoomHistoryVisibility.JOINED         -> stringProvider.getString(R.string.notice_room_visibility_joined)
-            RoomHistoryVisibility.WORLD_READABLE -> stringProvider.getString(R.string.notice_room_visibility_world_readable)
+            RoomHistoryVisibility.SHARED         -> sp.getString(R.string.notice_room_visibility_shared)
+            RoomHistoryVisibility.INVITED        -> sp.getString(R.string.notice_room_visibility_invited)
+            RoomHistoryVisibility.JOINED         -> sp.getString(R.string.notice_room_visibility_joined)
+            RoomHistoryVisibility.WORLD_READABLE -> sp.getString(R.string.notice_room_visibility_world_readable)
         }
-        return stringProvider.getString(R.string.notice_made_future_room_visibility, senderName, formattedVisibility)
+        return sp.getString(R.string.notice_made_future_room_visibility, senderName, formattedVisibility)
     }
 
     private fun formatCallEvent(event: Event, senderName: String?): CharSequence? {
@@ -122,13 +114,13 @@ class NoticeEventFormatter @Inject constructor(private val sessionHolder: Active
                 val content = event.getClearContent().toModel<CallInviteContent>() ?: return null
                 val isVideoCall = content.offer.sdp == CallInviteContent.Offer.SDP_VIDEO
                 return if (isVideoCall) {
-                    stringProvider.getString(R.string.notice_placed_video_call, senderName)
+                    sp.getString(R.string.notice_placed_video_call, senderName)
                 } else {
-                    stringProvider.getString(R.string.notice_placed_voice_call, senderName)
+                    sp.getString(R.string.notice_placed_voice_call, senderName)
                 }
             }
-            EventType.CALL_ANSWER == event.type -> stringProvider.getString(R.string.notice_answered_call, senderName)
-            EventType.CALL_HANGUP == event.type -> stringProvider.getString(R.string.notice_ended_call, senderName)
+            EventType.CALL_ANSWER == event.type -> sp.getString(R.string.notice_answered_call, senderName)
+            EventType.CALL_HANGUP == event.type -> sp.getString(R.string.notice_ended_call, senderName)
             else                                -> null
         }
     }
@@ -150,12 +142,11 @@ class NoticeEventFormatter @Inject constructor(private val sessionHolder: Active
         if (eventContent?.displayName != prevEventContent?.displayName) {
             val displayNameText = when {
                 prevEventContent?.displayName.isNullOrEmpty() ->
-                    stringProvider.getString(R.string.notice_display_name_set, event.senderId, eventContent?.displayName)
+                    sp.getString(R.string.notice_display_name_set, event.senderId, eventContent?.displayName)
                 eventContent?.displayName.isNullOrEmpty()     ->
-                    stringProvider.getString(R.string.notice_display_name_removed, event.senderId, prevEventContent?.displayName)
+                    sp.getString(R.string.notice_display_name_removed, event.senderId, prevEventContent?.displayName)
                 else                                          ->
-                    stringProvider.getString(R.string.notice_display_name_changed_from,
-                                             event.senderId, prevEventContent?.displayName, eventContent?.displayName)
+                    sp.getString(R.string.notice_display_name_changed_from, event.senderId, prevEventContent?.displayName, eventContent?.displayName)
             }
             displayText.append(displayNameText)
         }
@@ -163,64 +154,87 @@ class NoticeEventFormatter @Inject constructor(private val sessionHolder: Active
         if (eventContent?.avatarUrl != prevEventContent?.avatarUrl) {
             val displayAvatarText = if (displayText.isNotEmpty()) {
                 displayText.append(" ")
-                stringProvider.getString(R.string.notice_avatar_changed_too)
+                sp.getString(R.string.notice_avatar_changed_too)
             } else {
-                stringProvider.getString(R.string.notice_avatar_url_changed, senderName)
+                sp.getString(R.string.notice_avatar_url_changed, senderName)
             }
             displayText.append(displayAvatarText)
         }
         if (displayText.isEmpty()) {
             displayText.append(
-                    stringProvider.getString(R.string.notice_member_no_changes, senderName)
+                    sp.getString(R.string.notice_member_no_changes, senderName)
             )
         }
         return displayText.toString()
     }
 
     private fun buildMembershipNotice(event: Event, senderName: String?, eventContent: RoomMember?, prevEventContent: RoomMember?): String? {
-        val senderDisplayName = senderName ?: event.senderId
-        val targetDisplayName = eventContent?.displayName ?: prevEventContent?.displayName ?: ""
-        return when {
-            Membership.INVITE == eventContent?.membership -> {
+        val senderDisplayName = senderName ?: event.senderId ?: ""
+        val targetDisplayName = eventContent?.displayName ?: prevEventContent?.displayName ?: event.stateKey ?: ""
+        return when (eventContent?.membership) {
+            Membership.INVITE -> {
                 val selfUserId = sessionHolder.getSafeActiveSession()?.myUserId
                 when {
                     eventContent.thirdPartyInvite != null -> {
-                        val userWhoHasAccepted = eventContent.thirdPartyInvite?.signed?.mxid
-                                                 ?: event.stateKey
-                        stringProvider.getString(R.string.notice_room_third_party_registered_invite,
-                                                 userWhoHasAccepted, eventContent.thirdPartyInvite?.displayName)
+                        val userWhoHasAccepted = eventContent.thirdPartyInvite?.signed?.mxid ?: event.stateKey
+                        val threePidDisplayName = eventContent.thirdPartyInvite?.displayName ?: ""
+                        eventContent.safeReason?.let { reason ->
+                            sp.getString(R.string.notice_room_third_party_registered_invite_with_reason, userWhoHasAccepted, threePidDisplayName, reason)
+                        } ?: sp.getString(R.string.notice_room_third_party_registered_invite, userWhoHasAccepted, threePidDisplayName)
                     }
                     event.stateKey == selfUserId          ->
-                        stringProvider.getString(R.string.notice_room_invite_you, senderDisplayName)
+                        eventContent.safeReason?.let { reason ->
+                            sp.getString(R.string.notice_room_invite_you_with_reason, senderDisplayName, reason)
+                        } ?: sp.getString(R.string.notice_room_invite_you, senderDisplayName)
                     event.stateKey.isNullOrEmpty()        ->
-                        stringProvider.getString(R.string.notice_room_invite_no_invitee, senderDisplayName)
+                        eventContent.safeReason?.let { reason ->
+                            sp.getString(R.string.notice_room_invite_no_invitee_with_reason, senderDisplayName, reason)
+                        } ?: sp.getString(R.string.notice_room_invite_no_invitee, senderDisplayName)
                     else                                  ->
-                        stringProvider.getString(R.string.notice_room_invite, senderDisplayName, targetDisplayName)
+                        eventContent.safeReason?.let { reason ->
+                            sp.getString(R.string.notice_room_invite_with_reason, senderDisplayName, targetDisplayName, reason)
+                        } ?: sp.getString(R.string.notice_room_invite, senderDisplayName, targetDisplayName)
                 }
             }
-            Membership.JOIN == eventContent?.membership   ->
-                stringProvider.getString(R.string.notice_room_join, senderDisplayName)
-            Membership.LEAVE == eventContent?.membership  ->
+            Membership.JOIN   ->
+                eventContent.safeReason?.let { reason ->
+                    sp.getString(R.string.notice_room_join_with_reason, senderDisplayName, reason)
+                } ?: sp.getString(R.string.notice_room_join, senderDisplayName)
+            Membership.LEAVE  ->
                 // 2 cases here: this member may have left voluntarily or they may have been "left" by someone else ie. kicked
-                return if (event.senderId == event.stateKey) {
+                if (event.senderId == event.stateKey) {
                     if (prevEventContent?.membership == Membership.INVITE) {
-                        stringProvider.getString(R.string.notice_room_reject, senderDisplayName)
+                        eventContent.safeReason?.let { reason ->
+                            sp.getString(R.string.notice_room_reject_with_reason, senderDisplayName, reason)
+                        } ?: sp.getString(R.string.notice_room_reject, senderDisplayName)
                     } else {
-                        stringProvider.getString(R.string.notice_room_leave, senderDisplayName)
+                        eventContent.safeReason?.let { reason ->
+                            sp.getString(R.string.notice_room_leave_with_reason, senderDisplayName, reason)
+                        } ?: sp.getString(R.string.notice_room_leave, senderDisplayName)
                     }
                 } else if (prevEventContent?.membership == Membership.INVITE) {
-                    stringProvider.getString(R.string.notice_room_withdraw, senderDisplayName, targetDisplayName)
+                    eventContent.safeReason?.let { reason ->
+                        sp.getString(R.string.notice_room_withdraw_with_reason, senderDisplayName, targetDisplayName, reason)
+                    } ?: sp.getString(R.string.notice_room_withdraw, senderDisplayName, targetDisplayName)
                 } else if (prevEventContent?.membership == Membership.JOIN) {
-                    stringProvider.getString(R.string.notice_room_kick, senderDisplayName, targetDisplayName)
+                    eventContent.safeReason?.let { reason ->
+                        sp.getString(R.string.notice_room_kick_with_reason, senderDisplayName, targetDisplayName, reason)
+                    } ?: sp.getString(R.string.notice_room_kick, senderDisplayName, targetDisplayName)
                 } else if (prevEventContent?.membership == Membership.BAN) {
-                    stringProvider.getString(R.string.notice_room_unban, senderDisplayName, targetDisplayName)
+                    eventContent.safeReason?.let { reason ->
+                        sp.getString(R.string.notice_room_unban_with_reason, senderDisplayName, targetDisplayName, reason)
+                    } ?: sp.getString(R.string.notice_room_unban, senderDisplayName, targetDisplayName)
                 } else {
                     null
                 }
-            Membership.BAN == eventContent?.membership    ->
-                stringProvider.getString(R.string.notice_room_ban, senderDisplayName, targetDisplayName)
-            Membership.KNOCK == eventContent?.membership  ->
-                stringProvider.getString(R.string.notice_room_kick, senderDisplayName, targetDisplayName)
+            Membership.BAN    ->
+                eventContent.safeReason?.let {
+                    sp.getString(R.string.notice_room_ban_with_reason, senderDisplayName, targetDisplayName, it)
+                } ?: sp.getString(R.string.notice_room_ban, senderDisplayName, targetDisplayName)
+            Membership.KNOCK  ->
+                eventContent.safeReason?.let { reason ->
+                    sp.getString(R.string.notice_room_kick_with_reason, senderDisplayName, targetDisplayName, reason)
+                } ?: sp.getString(R.string.notice_room_kick, senderDisplayName, targetDisplayName)
             else              -> null
         }
     }
@@ -228,8 +242,8 @@ class NoticeEventFormatter @Inject constructor(private val sessionHolder: Active
     private fun formatJoinRulesEvent(event: Event, senderName: String?): CharSequence? {
         val content = event.getClearContent().toModel<RoomJoinRulesContent>() ?: return null
         return when (content.joinRules) {
-            RoomJoinRules.INVITE -> stringProvider.getString(R.string.room_join_rules_invite, senderName)
-            RoomJoinRules.PUBLIC -> stringProvider.getString(R.string.room_join_rules_public, senderName)
+            RoomJoinRules.INVITE -> sp.getString(R.string.room_join_rules_invite, senderName)
+            RoomJoinRules.PUBLIC -> sp.getString(R.string.room_join_rules_public, senderName)
             else                 -> null
         }
     }

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/helper/ContentUploadStateTrackerBinder.kt

@@ -25,12 +25,14 @@ import im.vector.matrix.android.api.session.content.ContentUploadStateTracker
 import im.vector.matrix.android.api.session.room.send.SendState
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ActiveSessionHolder
+import im.vector.riotx.core.di.ScreenScope
 import im.vector.riotx.core.error.ErrorFormatter
 import im.vector.riotx.core.resources.ColorProvider
 import im.vector.riotx.core.utils.TextUtils
 import im.vector.riotx.features.ui.getMessageTextColor
 import javax.inject.Inject
 
+@ScreenScope
 class ContentUploadStateTrackerBinder @Inject constructor(private val activeSessionHolder: ActiveSessionHolder,
                                                           private val colorProvider: ColorProvider,
                                                           private val errorFormatter: ErrorFormatter) {
@@ -40,7 +42,7 @@ class ContentUploadStateTrackerBinder @Inject constructor(private val activeSess
     fun bind(eventId: String,
              isLocalFile: Boolean,
              progressLayout: ViewGroup) {
-        activeSessionHolder.getActiveSession().also { session ->
+        activeSessionHolder.getSafeActiveSession()?.also { session ->
             val uploadStateTracker = session.contentUploadProgressTracker()
             val updateListener = ContentMediaProgressUpdater(progressLayout, isLocalFile, colorProvider, errorFormatter)
             updateListeners[eventId] = updateListener
@@ -49,13 +51,19 @@ class ContentUploadStateTrackerBinder @Inject constructor(private val activeSess
     }
 
     fun unbind(eventId: String) {
-        activeSessionHolder.getActiveSession().also { session ->
+        activeSessionHolder.getSafeActiveSession()?.also { session ->
             val uploadStateTracker = session.contentUploadProgressTracker()
             updateListeners[eventId]?.also {
                 uploadStateTracker.untrack(eventId, it)
             }
         }
     }
+
+    fun clear() {
+        activeSessionHolder.getSafeActiveSession()?.also {
+            it.contentUploadProgressTracker().clear()
+        }
+    }
 }
 
 private class ContentMediaProgressUpdater(private val progressLayout: ViewGroup,

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/helper/TimelineMediaSizeProvider.kt

@@ -19,11 +19,12 @@ package im.vector.riotx.features.home.room.detail.timeline.helper
 import androidx.recyclerview.widget.RecyclerView
 import im.vector.riotx.core.di.ScreenScope
 import javax.inject.Inject
+import kotlin.math.roundToInt
 
 @ScreenScope
 class TimelineMediaSizeProvider @Inject constructor() {
 
-    lateinit var recyclerView: RecyclerView
+    var recyclerView: RecyclerView? = null
     private var cachedSize: Pair<Int, Int>? = null
 
     fun getMaxSize(): Pair<Int, Int> {
@@ -31,17 +32,17 @@ class TimelineMediaSizeProvider @Inject constructor() {
     }
 
     private fun computeMaxSize(): Pair<Int, Int> {
-        val width = recyclerView.width
-        val height = recyclerView.height
+        val width = recyclerView?.width ?: 0
+        val height = recyclerView?.height ?: 0
         val maxImageWidth: Int
         val maxImageHeight: Int
         // landscape / portrait
         if (width < height) {
-            maxImageWidth = Math.round(width * 0.7f)
-            maxImageHeight = Math.round(height * 0.5f)
+            maxImageWidth = (width * 0.7f).roundToInt()
+            maxImageHeight = (height * 0.5f).roundToInt()
         } else {
-            maxImageWidth = Math.round(width * 0.5f)
-            maxImageHeight = Math.round(height * 0.7f)
+            maxImageWidth = (width * 0.5f).roundToInt()
+            maxImageHeight = (height * 0.7f).roundToInt()
         }
         return Pair(maxImageWidth, maxImageHeight)
     }

vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/reactions/ViewReactionsBottomSheet.kt

@@ -20,7 +20,6 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
 import butterknife.ButterKnife
@@ -29,6 +28,8 @@ import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.riotx.features.home.room.detail.timeline.action.TimelineEventFragmentArgs
 import im.vector.riotx.features.home.room.detail.timeline.item.MessageInformationData
@@ -49,8 +50,8 @@ class ViewReactionsBottomSheet : VectorBaseBottomSheetDialogFragment() {
 
     @Inject lateinit var epoxyController: ViewReactionsEpoxyController
 
-    override fun injectWith(screenComponent: ScreenComponent) {
-        screenComponent.inject(this)
+    override fun injectWith(injector: ScreenComponent) {
+        injector.inject(this)
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -61,11 +62,15 @@ class ViewReactionsBottomSheet : VectorBaseBottomSheetDialogFragment() {
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
-        recyclerView.layoutManager = LinearLayoutManager(context, RecyclerView.VERTICAL, false)
-        recyclerView.adapter = epoxyController.adapter
+        recyclerView.configureWith(epoxyController, hasFixedSize = false)
         bottomSheetTitle.text = context?.getString(R.string.reactions)
     }
 
+    override fun onDestroyView() {
+        recyclerView.cleanup()
+        super.onDestroyView()
+    }
+
     override fun invalidate() = withState(viewModel) {
         epoxyController.setData(it)
         super.invalidate()

vector/src/main/java/im/vector/riotx/features/home/room/filtered/FilteredRoomsActivity.kt

@@ -36,9 +36,7 @@ class FilteredRoomsActivity : VectorBaseActivity() {
             return supportFragmentManager.findFragmentByTag(FRAGMENT_TAG) as? RoomListFragment
         }
 
-    override fun getLayoutRes(): Int {
-        return R.layout.activity_filtered_rooms
-    }
+    override fun getLayoutRes() = R.layout.activity_filtered_rooms
 
     override fun injectWith(injector: ScreenComponent) {
         injector.inject(this)

vector/src/main/java/im/vector/riotx/features/home/room/list/RoomListFragment.kt

@@ -26,6 +26,7 @@ import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.airbnb.epoxy.OnModelBuildFinishedListener
 import com.airbnb.mvrx.*
 import com.google.android.material.snackbar.Snackbar
 import im.vector.matrix.android.api.failure.Failure
@@ -35,13 +36,13 @@ import im.vector.matrix.android.api.session.room.notification.RoomNotificationSt
 import im.vector.riotx.R
 import im.vector.riotx.core.epoxy.LayoutManagerStateRestorer
 import im.vector.riotx.core.error.ErrorFormatter
+import im.vector.riotx.core.extensions.cleanup
 import im.vector.riotx.core.platform.OnBackPressed
 import im.vector.riotx.core.platform.StateView
 import im.vector.riotx.core.platform.VectorBaseFragment
-
 import im.vector.riotx.features.home.RoomListDisplayMode
-import im.vector.riotx.features.home.room.list.actions.RoomListQuickActionsSharedAction
 import im.vector.riotx.features.home.room.list.actions.RoomListQuickActionsBottomSheet
+import im.vector.riotx.features.home.room.list.actions.RoomListQuickActionsSharedAction
 import im.vector.riotx.features.home.room.list.actions.RoomListQuickActionsSharedActionViewModel
 import im.vector.riotx.features.home.room.list.widget.FabMenuView
 import im.vector.riotx.features.notifications.NotificationDrawerManager
@@ -65,6 +66,7 @@ class RoomListFragment @Inject constructor(
 
 ) : VectorBaseFragment(), RoomSummaryController.Listener, OnBackPressed, FabMenuView.Listener {
 
+    private var modelBuildListener: OnModelBuildFinishedListener? = null
     private lateinit var sharedActionViewModel: RoomListQuickActionsSharedActionViewModel
     private val roomListParams: RoomListParams by args()
     private val roomListViewModel: RoomListViewModel by fragmentViewModel()
@@ -118,8 +120,12 @@ class RoomListFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
+        roomController.removeModelBuildListener(modelBuildListener)
+        modelBuildListener = null
+        roomListView.cleanup()
+        roomController.listener = null
+        createChatFabMenu.listener = null
         super.onDestroyView()
-        roomListView.adapter = null
     }
 
     private fun openSelectedRoom(event: RoomListViewEvents.SelectRoom) {
@@ -198,7 +204,8 @@ class RoomListFragment @Inject constructor(
         roomListView.layoutManager = layoutManager
         roomListView.itemAnimator = RoomListAnimator()
         roomController.listener = this
-        roomController.addModelBuildListener { it.dispatchTo(stateRestorer) }
+        modelBuildListener = OnModelBuildFinishedListener { it.dispatchTo(stateRestorer) }
+        roomController.addModelBuildListener(modelBuildListener)
         roomListView.adapter = roomController.adapter
         stateView.contentView = roomListView
     }

vector/src/main/java/im/vector/riotx/features/home/room/list/RoomListViewModel.kt

@@ -123,7 +123,7 @@ class RoomListViewModel @Inject constructor(initialState: RoomListViewState,
             )
         }
 
-        session.getRoom(roomId)?.join(emptyList(), object : MatrixCallback<Unit> {
+        session.getRoom(roomId)?.join(callback = object : MatrixCallback<Unit> {
             override fun onSuccess(data: Unit) {
                 // We do not update the joiningRoomsIds here, because, the room is not joined yet regarding the sync data.
                 // Instead, we wait for the room to be joined
@@ -158,7 +158,7 @@ class RoomListViewModel @Inject constructor(initialState: RoomListViewState,
             )
         }
 
-        session.getRoom(roomId)?.leave(object : MatrixCallback<Unit> {
+        session.getRoom(roomId)?.leave(null, object : MatrixCallback<Unit> {
             override fun onSuccess(data: Unit) {
                 // We do not update the rejectingRoomsIds here, because, the room is not rejected yet regarding the sync data.
                 // Instead, we wait for the room to be rejected
@@ -197,7 +197,7 @@ class RoomListViewModel @Inject constructor(initialState: RoomListViewState,
     }
 
     private fun handleLeaveRoom(action: RoomListAction.LeaveRoom) {
-        session.getRoom(action.roomId)?.leave(object : MatrixCallback<Unit> {
+        session.getRoom(action.roomId)?.leave(null, object : MatrixCallback<Unit> {
             override fun onFailure(failure: Throwable) {
                 _viewEvents.post(RoomListViewEvents.Failure(failure))
             }

vector/src/main/java/im/vector/riotx/features/home/room/list/RoomSummaryController.kt

@@ -42,7 +42,7 @@ class RoomSummaryController @Inject constructor(private val stringProvider: Stri
 
     init {
         // We are requesting a model build directly as the first build of epoxy is on the main thread.
-        // It avoids to build the the whole list of rooms on the main thread.
+        // It avoids to build the whole list of rooms on the main thread.
         requestModelBuild()
     }
 

vector/src/main/java/im/vector/riotx/features/home/room/list/actions/RoomListQuickActionsBottomSheet.kt

@@ -21,7 +21,6 @@ import android.os.Parcelable
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import butterknife.BindView
 import butterknife.ButterKnife
@@ -29,6 +28,8 @@ import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
 import im.vector.riotx.R
 import im.vector.riotx.core.di.ScreenComponent
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.riotx.features.navigation.Navigator
 import kotlinx.android.parcel.Parcelize
@@ -56,8 +57,8 @@ class RoomListQuickActionsBottomSheet : VectorBaseBottomSheetDialogFragment(), R
 
     override val showExpanded = true
 
-    override fun injectWith(screenComponent: ScreenComponent) {
-        screenComponent.inject(this)
+    override fun injectWith(injector: ScreenComponent) {
+        injector.inject(this)
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -69,13 +70,17 @@ class RoomListQuickActionsBottomSheet : VectorBaseBottomSheetDialogFragment(), R
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
         sharedActionViewModel = activityViewModelProvider.get(RoomListQuickActionsSharedActionViewModel::class.java)
-        recyclerView.layoutManager = LinearLayoutManager(requireContext(), RecyclerView.VERTICAL, false)
-        recyclerView.adapter = roomListActionsEpoxyController.adapter
+        recyclerView.configureWith(roomListActionsEpoxyController, hasFixedSize = false)
         // Disable item animation
         recyclerView.itemAnimator = null
         roomListActionsEpoxyController.listener = this
     }
 
+    override fun onDestroyView() {
+        recyclerView.cleanup()
+        super.onDestroyView()
+    }
+
     override fun invalidate() = withState(viewModel) {
         roomListActionsEpoxyController.setData(it)
         super.invalidate()

vector/src/main/java/im/vector/riotx/features/login/LoginViewModel.kt

@@ -539,7 +539,7 @@ class LoginViewModel @AssistedInject constructor(@Assisted initialState: LoginVi
                                 setState {
                                     copy(
                                             asyncHomeServerLoginFlowRequest = Uninitialized,
-                                            homeServerUrl = action.homeServerUrl,
+                                            homeServerUrl = data.homeServerUrl,
                                             loginMode = loginMode,
                                             loginModeSupportedTypes = data.loginFlowResponse.flows.mapNotNull { it.type }.toList()
                                     )

vector/src/main/java/im/vector/riotx/features/login/terms/LoginTermsFragment.kt

@@ -24,6 +24,8 @@ import butterknife.OnClick
 import com.airbnb.mvrx.args
 import im.vector.riotx.R
 import im.vector.riotx.core.error.ErrorFormatter
+import im.vector.riotx.core.extensions.cleanup
+import im.vector.riotx.core.extensions.configureWith
 import im.vector.riotx.core.utils.openUrlInExternalBrowser
 import im.vector.riotx.features.login.AbstractLoginFragment
 import im.vector.riotx.features.login.LoginAction
@@ -55,8 +57,7 @@ class LoginTermsFragment @Inject constructor(
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-
-        loginTermsPolicyList.setController(policyController)
+        loginTermsPolicyList.configureWith(policyController)
         policyController.listener = this
 
         val list = ArrayList<LocalizedFlowDataLoginTermsChecked>()
@@ -69,6 +70,12 @@ class LoginTermsFragment @Inject constructor(
         loginTermsViewState = LoginTermsViewState(list)
     }
 
+    override fun onDestroyView() {
+        loginTermsPolicyList.cleanup()
+        policyController.listener = null
+        super.onDestroyView()
+    }
+
     private fun renderState() {
         policyController.setData(loginTermsViewState.localizedFlowDataLoginTermsChecked)
 

vector/src/main/java/im/vector/riotx/features/notifications/NotificationBroadcastReceiver.kt

@@ -74,14 +74,14 @@ class NotificationBroadcastReceiver : BroadcastReceiver() {
     private fun handleJoinRoom(roomId: String) {
         activeSessionHolder.getSafeActiveSession()?.let { session ->
             session.getRoom(roomId)
-                    ?.join(emptyList(), object : MatrixCallback<Unit> {})
+                    ?.join(callback = object : MatrixCallback<Unit> {})
         }
     }
 
     private fun handleRejectRoom(roomId: String) {
         activeSessionHolder.getSafeActiveSession()?.let { session ->
             session.getRoom(roomId)
-                    ?.leave(object : MatrixCallback<Unit> {})
+                    ?.leave(callback = object : MatrixCallback<Unit> {})
         }
     }
 

vector/src/main/java/im/vector/riotx/features/reactions/EmojiChooserFragment.kt

@@ -17,12 +17,18 @@ package im.vector.riotx.features.reactions
 
 import android.os.Bundle
 import android.view.View
-import androidx.recyclerview.widget.RecyclerView
+import androidx.lifecycle.observe
 import im.vector.riotx.R
+import im.vector.riotx.core.extensions.cleanup
 import im.vector.riotx.core.platform.VectorBaseFragment
+import kotlinx.android.synthetic.main.emoji_chooser_fragment.*
 import javax.inject.Inject
 
-class EmojiChooserFragment @Inject constructor() : VectorBaseFragment() {
+class EmojiChooserFragment @Inject constructor(
+        private val emojiRecyclerAdapter: EmojiRecyclerAdapter
+) : VectorBaseFragment(),
+        EmojiRecyclerAdapter.InteractionListener,
+        ReactionClickListener {
 
     override fun getLayoutResId() = R.layout.emoji_chooser_fragment
 
@@ -31,10 +37,29 @@ class EmojiChooserFragment @Inject constructor() : VectorBaseFragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         viewModel = activityViewModelProvider.get(EmojiChooserViewModel::class.java)
-        viewModel.initWithContext(context!!)
-        (view as? RecyclerView)?.let {
-            it.adapter = viewModel.adapter
-            it.adapter?.notifyDataSetChanged()
+
+        emojiRecyclerAdapter.reactionClickListener = this
+        emojiRecyclerAdapter.interactionListener = this
+
+        emojiRecyclerView.adapter = emojiRecyclerAdapter
+
+        viewModel.moveToSection.observe(viewLifecycleOwner) { section ->
+            emojiRecyclerAdapter.scrollToSection(section)
         }
     }
+
+    override fun firstVisibleSectionChange(section: Int) {
+        viewModel.setCurrentSection(section)
+    }
+
+    override fun onReactionSelected(reaction: String) {
+        viewModel.onReactionSelected(reaction)
+    }
+
+    override fun onDestroyView() {
+        emojiRecyclerView.cleanup()
+        emojiRecyclerAdapter.reactionClickListener = null
+        emojiRecyclerAdapter.interactionListener = null
+        super.onDestroyView()
+    }
 }

vector/src/main/java/im/vector/riotx/features/reactions/EmojiChooserViewModel.kt

@@ -15,7 +15,6 @@
  */
 package im.vector.riotx.features.reactions
 
-import android.content.Context
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import im.vector.riotx.core.utils.LiveEvent
@@ -23,36 +22,26 @@ import javax.inject.Inject
 
 class EmojiChooserViewModel @Inject constructor() : ViewModel() {
 
-    var adapter: EmojiRecyclerAdapter? = null
-    val emojiSourceLiveData: MutableLiveData<EmojiDataSource> = MutableLiveData()
-
     val navigateEvent: MutableLiveData<LiveEvent<String>> = MutableLiveData()
     var selectedReaction: String? = null
     var eventId: String? = null
 
     val currentSection: MutableLiveData<Int> = MutableLiveData()
+    val moveToSection: MutableLiveData<Int> = MutableLiveData()
 
-    var reactionClickListener = object : ReactionClickListener {
-        override fun onReactionSelected(reaction: String) {
+    fun onReactionSelected(reaction: String) {
         selectedReaction = reaction
         navigateEvent.value = LiveEvent(NAVIGATE_FINISH)
     }
-    }
 
-    fun initWithContext(context: Context) {
-        // TODO load async
-        val emojiDataSource = EmojiDataSource(context)
-        emojiSourceLiveData.value = emojiDataSource
-        adapter = EmojiRecyclerAdapter(emojiDataSource, reactionClickListener)
-        adapter?.interactionListener = object : EmojiRecyclerAdapter.InteractionListener {
-            override fun firstVisibleSectionChange(section: Int) {
+    // Called by the Fragment, when the List is scrolled
+    fun setCurrentSection(section: Int) {
         currentSection.value = section
     }
-        }
-    }
 
-    fun scrollToSection(sectionIndex: Int) {
-        adapter?.scrollToSection(sectionIndex)
+    // Called by the Activity, when a tab item is clicked
+    fun scrollToSection(section: Int) {
+        moveToSection.value = section
     }
 
     companion object {

vector/src/main/java/im/vector/riotx/features/reactions/EmojiDataSource.kt

@@ -1,91 +0,0 @@
-/*
- * Copyright 2019 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package im.vector.riotx.features.reactions
-
-import android.content.Context
-import com.squareup.moshi.Json
-import com.squareup.moshi.JsonClass
-import com.squareup.moshi.Moshi
-import im.vector.riotx.R
-
-class EmojiDataSource(val context: Context) {
-
-    var rawData: EmojiData? = null
-
-    init {
-        context.resources.openRawResource(R.raw.emoji_picker_datasource).use { input ->
-            val moshi = Moshi.Builder().build()
-            val jsonAdapter = moshi.adapter(EmojiData::class.java)
-            val inputAsString = input.bufferedReader().use { it.readText() }
-            this.rawData = jsonAdapter.fromJson(inputAsString)
-           // this.rawData = mb.fr(InputStreamReader(it), EmojiData::class.java)
-        }
-    }
-    @JsonClass(generateAdapter = true)
-    data class EmojiData(val categories: List<EmojiCategory>,
-                         val emojis: Map<String, EmojiItem>,
-                         val aliases: Map<String, String>)
-
-    @JsonClass(generateAdapter = true)
-    data class EmojiCategory(val id: String, val name: String, val emojis: List<String>)
-
-    @JsonClass(generateAdapter = true)
-    data class EmojiItem(
-            @Json(name = "a") val name: String,
-            @Json(name = "b") val unicode: String,
-            @Json(name = "j") val keywords: List<String>?,
-            val k: List<String>?) {
-
-        var _emojiText: String? = null
-
-        fun emojiString() : String {
-            if (_emojiText == null) {
-                val utf8Text = unicode.split("-").joinToString("") { "\\u$it" } // "\u0048\u0065\u006C\u006C\u006F World"
-               _emojiText = fromUnicode(utf8Text)
-            }
-            return _emojiText!!
-        }
-    }
-
-    companion object {
-        fun fromUnicode(unicode: String): String {
-            val str = unicode.replace("\\", "")
-            val arr = str.split("u".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
-            val text = StringBuffer()
-            for (i in 1 until arr.size) {
-                val hexVal = Integer.parseInt(arr[i], 16)
-                text.append(Character.toChars(hexVal))
-            }
-            return text.toString()
-        }
-    }
-
-//    name: 'a',
-//    unified: 'b',
-//    non_qualified: 'c',
-//    has_img_apple: 'd',
-//    has_img_google: 'e',
-//    has_img_twitter: 'f',
-//    has_img_emojione: 'g',
-//    has_img_facebook: 'h',
-//    has_img_messenger: 'i',
-//    keywords: 'j',
-//    sheet: 'k',
-//    emoticons: 'l',
-//    text: 'm',
-//    short_names: 'n',
-//    added_in: 'o',
-}