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Merge pull request #5817 from vector-im/arb/pse-329
Using the same User Avatar and display name for all messages in the timeline
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Allow using the latest user Avatar and name for all messages in the timeline |
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66 changes: 66 additions & 0 deletions
66
.../main/java/org/matrix/android/sdk/internal/session/room/timeline/LiveRoomStateListener.kt
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/* | ||
* Copyright (c) 2022 The Matrix.org Foundation C.I.C. | ||
* | ||
* 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. | ||
*/ | ||
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package org.matrix.android.sdk.internal.session.room.timeline | ||
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import androidx.lifecycle.LiveData | ||
import androidx.lifecycle.Observer | ||
import kotlinx.coroutines.CoroutineDispatcher | ||
import kotlinx.coroutines.withContext | ||
import org.matrix.android.sdk.api.query.QueryStringValue | ||
import org.matrix.android.sdk.api.session.events.model.Event | ||
import org.matrix.android.sdk.api.session.events.model.EventType | ||
import org.matrix.android.sdk.api.session.room.model.RoomMemberContent | ||
import org.matrix.android.sdk.internal.session.events.getFixedRoomMemberContent | ||
import org.matrix.android.sdk.internal.session.room.state.StateEventDataSource | ||
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/** | ||
* Helper to observe and query the live room state. | ||
*/ | ||
internal class LiveRoomStateListener( | ||
roomId: String, | ||
stateEventDataSource: StateEventDataSource, | ||
private val mainDispatcher: CoroutineDispatcher, | ||
) { | ||
private val roomStateObserver = Observer<List<Event>> { stateEvents -> | ||
stateEvents.map { event -> | ||
val memberContent = event.getFixedRoomMemberContent() ?: return@map | ||
val stateKey = event.stateKey ?: return@map | ||
liveRoomState[stateKey] = memberContent | ||
} | ||
} | ||
private val stateEventsLiveData: LiveData<List<Event>> by lazy { | ||
stateEventDataSource.getStateEventsLive( | ||
roomId = roomId, | ||
eventTypes = setOf(EventType.STATE_ROOM_MEMBER), | ||
stateKey = QueryStringValue.NoCondition, | ||
) | ||
} | ||
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private val liveRoomState = mutableMapOf<String, RoomMemberContent>() | ||
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suspend fun start() = withContext(mainDispatcher) { | ||
stateEventsLiveData.observeForever(roomStateObserver) | ||
} | ||
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suspend fun stop() = withContext(mainDispatcher) { | ||
if (stateEventsLiveData.hasActiveObservers()) { | ||
stateEventsLiveData.removeObserver(roomStateObserver) | ||
} | ||
} | ||
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fun getLiveState(stateKey: String): RoomMemberContent? = liveRoomState[stateKey] | ||
} |
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