forked from GitHub-Mirror/riotX-android
113 lines
4.2 KiB
Kotlin
113 lines
4.2 KiB
Kotlin
/*
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* Copyright 2019 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package im.vector.riotredesign.features.home.room.detail
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import com.airbnb.mvrx.MvRxViewModelFactory
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import com.airbnb.mvrx.ViewModelContext
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import com.jakewharton.rxrelay2.BehaviorRelay
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import im.vector.matrix.android.api.MatrixCallback
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import im.vector.matrix.android.api.session.Session
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import im.vector.matrix.android.api.session.events.model.Event
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import im.vector.matrix.rx.rx
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import im.vector.riotredesign.core.extensions.lastMinBy
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import im.vector.riotredesign.core.platform.RiotViewModel
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import im.vector.riotredesign.features.home.room.VisibleRoomStore
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import io.reactivex.rxkotlin.subscribeBy
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import org.koin.android.ext.android.get
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import java.util.concurrent.TimeUnit
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class RoomDetailViewModel(initialState: RoomDetailViewState,
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private val session: Session,
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private val visibleRoomHolder: VisibleRoomStore
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) : RiotViewModel<RoomDetailViewState>(initialState) {
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private val room = session.getRoom(initialState.roomId)!!
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private val roomId = initialState.roomId
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private val eventId = initialState.eventId
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private val displayedEventsObservable = BehaviorRelay.create<RoomDetailActions.EventDisplayed>()
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companion object : MvRxViewModelFactory<RoomDetailViewModel, RoomDetailViewState> {
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@JvmStatic
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override fun create(viewModelContext: ViewModelContext, state: RoomDetailViewState): RoomDetailViewModel? {
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val currentSession = viewModelContext.activity.get<Session>()
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val visibleRoomHolder = viewModelContext.activity.get<VisibleRoomStore>()
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return RoomDetailViewModel(state, currentSession, visibleRoomHolder)
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}
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}
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init {
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observeRoomSummary()
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observeTimeline()
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observeDisplayedEvents()
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room.loadRoomMembersIfNeeded()
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}
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fun process(action: RoomDetailActions) {
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when (action) {
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is RoomDetailActions.SendMessage -> handleSendMessage(action)
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is RoomDetailActions.IsDisplayed -> handleIsDisplayed()
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is RoomDetailActions.EventDisplayed -> handleEventDisplayed(action)
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}
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}
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// PRIVATE METHODS *****************************************************************************
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private fun handleSendMessage(action: RoomDetailActions.SendMessage) {
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room.sendTextMessage(action.text, callback = object : MatrixCallback<Event> {})
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}
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private fun handleEventDisplayed(action: RoomDetailActions.EventDisplayed) {
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displayedEventsObservable.accept(action)
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}
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private fun handleIsDisplayed() {
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visibleRoomHolder.post(roomId)
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}
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private fun observeDisplayedEvents() {
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// We are buffering scroll events for one second
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// and keep the most recent one to set the read receipt on.
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displayedEventsObservable.hide()
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.buffer(1, TimeUnit.SECONDS)
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.filter { it.isNotEmpty() }
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.subscribeBy(onNext = { actions ->
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val mostRecentEvent = actions.lastMinBy { it.index }
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mostRecentEvent?.event?.root?.eventId?.let { eventId ->
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room.setReadReceipt(eventId, callback = object : MatrixCallback<Void> {})
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}
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})
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.disposeOnClear()
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}
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private fun observeRoomSummary() {
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room.rx().liveRoomSummary()
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.execute { async ->
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copy(asyncRoomSummary = async)
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}
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}
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private fun observeTimeline() {
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room.rx().timeline(eventId)
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.execute { timelineData ->
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copy(asyncTimelineData = timelineData)
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}
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}
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} |