Sync: add progress indicator for sync, need UI inputs.

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

@@ -19,6 +19,7 @@ package im.vector.matrix.rx
 import im.vector.matrix.android.api.session.Session
 import im.vector.matrix.android.api.session.group.model.GroupSummary
 import im.vector.matrix.android.api.session.room.model.RoomSummary
+import im.vector.matrix.android.api.session.sync.SyncState
 import io.reactivex.Observable
 
 class RxSession(private val session: Session) {
@@ -31,6 +32,10 @@ class RxSession(private val session: Session) {
         return session.liveGroupSummaries().asObservable()
     }
 
+    fun liveSyncState(): Observable<SyncState> {
+        return session.syncState().asObservable()
+    }
+
 }
 
 fun Session.rx(): RxSession {

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

@@ -17,6 +17,7 @@
 package im.vector.matrix.android.api.session
 
 import androidx.annotation.MainThread
+import androidx.lifecycle.LiveData
 import im.vector.matrix.android.api.auth.data.SessionParams
 import im.vector.matrix.android.api.session.cache.CacheService
 import im.vector.matrix.android.api.session.content.ContentUploadStateTracker
@@ -27,6 +28,7 @@ import im.vector.matrix.android.api.session.room.RoomDirectoryService
 import im.vector.matrix.android.api.session.room.RoomService
 import im.vector.matrix.android.api.session.signout.SignOutService
 import im.vector.matrix.android.api.session.sync.FilterService
+import im.vector.matrix.android.api.session.sync.SyncState
 import im.vector.matrix.android.api.session.user.UserService
 
 /**
@@ -66,6 +68,12 @@ interface Session :
     @MainThread
     fun stopSync()
 
+    /**
+     * This method allows to listen the sync state.
+     * @return a [LiveData] of [SyncState].
+     */
+    fun syncState(): LiveData<SyncState>
+
     /**
      * This method allow to close a session. It does stop some services.
      */
@@ -102,6 +110,7 @@ interface Session :
          * The access token is not valid anymore
          */
         fun onInvalidToken()
+
     }
 
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/sync/SyncState.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.api.session.sync
+
+sealed class SyncState {
+    object IDLE : SyncState()
+    data class RUNNING(val catchingUp: Boolean) : SyncState()
+    object PAUSED : SyncState()
+    object KILLING : SyncState()
+    object KILLED : SyncState()
+}

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

@@ -39,6 +39,7 @@ import im.vector.matrix.android.api.session.room.model.roomdirectory.PublicRooms
 import im.vector.matrix.android.api.session.room.model.thirdparty.ThirdPartyProtocol
 import im.vector.matrix.android.api.session.signout.SignOutService
 import im.vector.matrix.android.api.session.sync.FilterService
+import im.vector.matrix.android.api.session.sync.SyncState
 import im.vector.matrix.android.api.session.user.UserService
 import im.vector.matrix.android.api.session.user.model.User
 import im.vector.matrix.android.api.util.Cancelable
@@ -124,6 +125,10 @@ internal class DefaultSession(override val sessionParams: SessionParams) : Sessi
         isOpen = false
     }
 
+    override fun syncState(): LiveData<SyncState> {
+        return syncThread.liveState()
+    }
+
     @MainThread
     override fun signOut(callback: MatrixCallback<Unit>) {
         assert(isOpen)

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

@@ -16,10 +16,13 @@
 
 package im.vector.matrix.android.internal.session.sync.job
 
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
 import com.squareup.moshi.JsonEncodingException
 import im.vector.matrix.android.api.MatrixCallback
 import im.vector.matrix.android.api.failure.Failure
 import im.vector.matrix.android.api.failure.MatrixError
+import im.vector.matrix.android.api.session.sync.SyncState
 import im.vector.matrix.android.api.util.Cancelable
 import im.vector.matrix.android.internal.network.NetworkConnectivityChecker
 import im.vector.matrix.android.internal.session.sync.SyncTask
@@ -42,61 +45,52 @@ internal class SyncThread(private val syncTask: SyncTask,
                           private val taskExecutor: TaskExecutor
 ) : Thread(), NetworkConnectivityChecker.Listener, BackgroundDetectionObserver.Listener {
 
-    enum class State {
+    private var state: SyncState = SyncState.IDLE
-        IDLE,
+    private var liveState = MutableLiveData<SyncState>()
-        RUNNING,
-        PAUSED,
-        KILLING,
-        KILLED
-    }
-
-    private var state: State = State.IDLE
     private val lock = Object()
     private var nextBatch = syncTokenStore.getLastToken()
     private var cancelableTask: Cancelable? = null
 
-    fun restart() {
+    init {
-        synchronized(lock) {
+        updateStateTo(SyncState.IDLE)
-            if (state != State.PAUSED) {
-                return@synchronized
     }
-            Timber.v("Resume sync...")
 
+    fun restart() = synchronized(lock) {
+        if (state is SyncState.PAUSED) {
+            Timber.v("Resume sync...")
             // Retrieve the last token, it may have been deleted in case of a clear cache
             nextBatch = syncTokenStore.getLastToken()
-
+            updateStateTo(SyncState.RUNNING(catchingUp = true))
-            state = State.RUNNING
             lock.notify()
         }
     }
 
-    fun pause() {
+    fun pause() = synchronized(lock) {
-        synchronized(lock) {
+        if (state is SyncState.RUNNING) {
-            if (state != State.RUNNING) {
-                return@synchronized
-            }
             Timber.v("Pause sync...")
-            state = State.PAUSED
+            updateStateTo(SyncState.PAUSED)
         }
     }
 
-    fun kill() {
+    fun kill() = synchronized(lock) {
-        synchronized(lock) {
         Timber.v("Kill sync...")
-            state = State.KILLING
+        updateStateTo(SyncState.KILLING)
         cancelableTask?.cancel()
         lock.notify()
     }
-    }
 
+    fun liveState(): LiveData<SyncState> {
+        return liveState
+    }
 
     override fun run() {
         Timber.v("Start syncing...")
         networkConnectivityChecker.register(this)
         backgroundDetectionObserver.register(this)
-        state = State.RUNNING
+        updateStateTo(SyncState.RUNNING(catchingUp = true))
-        while (state != State.KILLING) {
+
-            if (!networkConnectivityChecker.isConnected() || state == State.PAUSED) {
+        while (state != SyncState.KILLING) {
+            if (!networkConnectivityChecker.isConnected() || state == SyncState.PAUSED) {
                 Timber.v("Waiting...")
                 synchronized(lock) {
                     lock.wait()
@@ -133,7 +127,7 @@ internal class SyncThread(private val syncTask: SyncTask,
                                 if (failure is Failure.ServerError
                                         && (failure.error.code == MatrixError.UNKNOWN_TOKEN || failure.error.code == MatrixError.MISSING_TOKEN)) {
                                     // No token or invalid token, stop the thread
-                                    state = State.KILLING
+                                    updateStateTo(SyncState.KILLING)
                                 }
 
                                 latch.countDown()
@@ -141,16 +135,23 @@ internal class SyncThread(private val syncTask: SyncTask,
 
                         })
                         .executeBy(taskExecutor)
-
                 latch.await()
+                if (state is SyncState.RUNNING) {
+                    updateStateTo(SyncState.RUNNING(catchingUp = false))
+                }
             }
         }
         Timber.v("Sync killed")
-        state = State.KILLED
+        updateStateTo(SyncState.KILLED)
         backgroundDetectionObserver.unregister(this)
         networkConnectivityChecker.unregister(this)
     }
 
+    private fun updateStateTo(newState: SyncState) {
+        state = newState
+        liveState.postValue(newState)
+    }
+
     override fun onConnect() {
         synchronized(lock) {
             lock.notify()

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

@@ -19,6 +19,7 @@ package im.vector.riotredesign.features.home
 import android.os.Bundle
 import android.os.Parcelable
 import android.view.LayoutInflater
+import android.view.View
 import androidx.core.view.forEachIndexed
 import androidx.lifecycle.ViewModelProviders
 import com.airbnb.mvrx.args
@@ -26,6 +27,7 @@ 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.sync.SyncState
 import im.vector.riotredesign.R
 import im.vector.riotredesign.core.platform.ToolbarConfigurable
 import im.vector.riotredesign.core.platform.VectorBaseFragment
@@ -145,6 +147,10 @@ class HomeDetailFragment : VectorBaseFragment() {
         unreadCounterBadgeViews[INDEX_CATCHUP].render(UnreadCounterBadgeView.State(it.notificationCountCatchup, it.notificationHighlightCatchup))
         unreadCounterBadgeViews[INDEX_PEOPLE].render(UnreadCounterBadgeView.State(it.notificationCountPeople, it.notificationHighlightPeople))
         unreadCounterBadgeViews[INDEX_ROOMS].render(UnreadCounterBadgeView.State(it.notificationCountRooms, it.notificationHighlightRooms))
+        syncProgressBar.visibility = when (it.syncState) {
+            is SyncState.RUNNING -> if (it.syncState.catchingUp) View.VISIBLE else View.GONE
+            else                 -> View.GONE
+        }
     }
 
     companion object {

vector/src/main/java/im/vector/riotredesign/features/home/HomeDetailViewModel.kt

@@ -18,6 +18,8 @@ package im.vector.riotredesign.features.home
 
 import com.airbnb.mvrx.MvRxViewModelFactory
 import com.airbnb.mvrx.ViewModelContext
+import im.vector.matrix.android.api.session.Session
+import im.vector.matrix.rx.rx
 import im.vector.riotredesign.core.platform.VectorViewModel
 import org.koin.android.ext.android.get
 
@@ -25,6 +27,7 @@ import org.koin.android.ext.android.get
  * View model used to update the home bottom bar notification counts
  */
 class HomeDetailViewModel(initialState: HomeDetailViewState,
+                          private val session: Session,
                           private val homeRoomListStore: HomeRoomListObservableStore)
     : VectorViewModel<HomeDetailViewState>(initialState) {
 
@@ -33,16 +36,29 @@ class HomeDetailViewModel(initialState: HomeDetailViewState,
         @JvmStatic
         override fun create(viewModelContext: ViewModelContext, state: HomeDetailViewState): HomeDetailViewModel? {
             val homeRoomListStore = viewModelContext.activity.get<HomeRoomListObservableStore>()
-            return HomeDetailViewModel(state, homeRoomListStore)
+            val session = viewModelContext.activity.get<Session>()
+            return HomeDetailViewModel(state, session, homeRoomListStore)
         }
     }
 
     init {
+        observeSyncState()
         observeRoomSummaries()
     }
 
     // PRIVATE METHODS *****************************************************************************
 
+    private fun observeSyncState() {
+        session.rx()
+                .liveSyncState()
+                .subscribe { syncState ->
+                    setState {
+                        copy(syncState = syncState)
+                    }
+                }
+                .disposeOnClear()
+    }
+
     private fun observeRoomSummaries() {
         homeRoomListStore
                 .observe()

vector/src/main/java/im/vector/riotredesign/features/home/HomeDetailViewState.kt

@@ -17,6 +17,7 @@
 package im.vector.riotredesign.features.home
 
 import com.airbnb.mvrx.MvRxState
+import im.vector.matrix.android.api.session.sync.SyncState
 
 data class HomeDetailViewState(
         val notificationCountCatchup: Int = 0,
@@ -24,5 +25,6 @@ data class HomeDetailViewState(
         val notificationCountPeople: Int = 0,
         val notificationHighlightPeople: Boolean = false,
         val notificationCountRooms: Int = 0,
-        val notificationHighlightRooms: Boolean = false
+        val notificationHighlightRooms: Boolean = false,
+        val syncState: SyncState = SyncState.IDLE
 ) : MvRxState

vector/src/main/res/layout/fragment_home_detail.xml

@@ -44,13 +44,26 @@
 
     </androidx.appcompat.widget.Toolbar>
 
+    <ProgressBar
+        android:id="@+id/syncProgressBar"
+        style="@style/Widget.AppCompat.ProgressBar.Horizontal"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:indeterminate="true"
+        android:visibility="gone"
+        android:background="?riotx_header_panel_background"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/groupToolbar"
+        tools:visibility="visible" />
+
     <FrameLayout
         android:id="@+id/roomListContainer"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:background="?riotx_header_panel_background"
         app:layout_constraintBottom_toTopOf="@+id/bottomNavigationView"
-        app:layout_constraintTop_toBottomOf="@+id/groupToolbar" />
+        app:layout_constraintTop_toBottomOf="@+id/syncProgressBar" />
 
     <com.google.android.material.bottomnavigation.BottomNavigationView
         android:id="@+id/bottomNavigationView"