forked from GitHub-Mirror/riotX-android
153 lines
7.1 KiB
Kotlin
153 lines
7.1 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.matrix.android.internal.session.room.timeline
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import android.util.SparseArray
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import im.vector.matrix.android.api.session.room.model.ReadReceipt
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import im.vector.matrix.android.api.session.room.timeline.TimelineSettings
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import im.vector.matrix.android.internal.database.mapper.ReadReceiptsSummaryMapper
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import im.vector.matrix.android.internal.database.model.ReadReceiptsSummaryEntity
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import im.vector.matrix.android.internal.database.model.ReadReceiptsSummaryEntityFields
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import im.vector.matrix.android.internal.database.model.TimelineEventEntity
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import im.vector.matrix.android.internal.database.model.TimelineEventEntityFields
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import im.vector.matrix.android.internal.database.query.FilterContent
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import im.vector.matrix.android.internal.database.query.whereInRoom
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import io.realm.OrderedRealmCollectionChangeListener
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import io.realm.Realm
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import io.realm.RealmQuery
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import io.realm.RealmResults
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/**
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* This class is responsible for handling the read receipts for hidden events (check [TimelineSettings] to see filtering).
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* When an hidden event has read receipts, we want to transfer these read receipts on the first older displayed event.
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* It has to be used in [DefaultTimeline] and we should call the [start] and [dispose] methods to properly handle realm subscription.
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*/
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internal class TimelineHiddenReadReceipts constructor(private val readReceiptsSummaryMapper: ReadReceiptsSummaryMapper,
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private val roomId: String,
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private val settings: TimelineSettings) {
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interface Delegate {
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fun rebuildEvent(eventId: String, readReceipts: List<ReadReceipt>): Boolean
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fun onReadReceiptsUpdated()
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}
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private val correctedReadReceiptsEventByIndex = SparseArray<String>()
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private val correctedReadReceiptsByEvent = HashMap<String, MutableList<ReadReceipt>>()
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private lateinit var hiddenReadReceipts: RealmResults<ReadReceiptsSummaryEntity>
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private lateinit var liveEvents: RealmResults<TimelineEventEntity>
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private lateinit var delegate: Delegate
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private val hiddenReadReceiptsListener = OrderedRealmCollectionChangeListener<RealmResults<ReadReceiptsSummaryEntity>> { collection, changeSet ->
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var hasChange = false
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// Deletion here means we don't have any readReceipts for the given hidden events
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changeSet.deletions.forEach {
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val eventId = correctedReadReceiptsEventByIndex[it]
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val timelineEvent = liveEvents.where()
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.equalTo(TimelineEventEntityFields.EVENT_ID, eventId)
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.findFirst()
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// We are rebuilding the corresponding event with only his own RR
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val readReceipts = readReceiptsSummaryMapper.map(timelineEvent?.readReceipts)
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hasChange = delegate.rebuildEvent(eventId, readReceipts) || hasChange
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}
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correctedReadReceiptsEventByIndex.clear()
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correctedReadReceiptsByEvent.clear()
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hiddenReadReceipts.forEachIndexed { index, summary ->
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val timelineEvent = summary?.timelineEvent?.firstOrNull()
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val displayIndex = timelineEvent?.root?.displayIndex
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if (displayIndex != null) {
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// Then we are looking for the first displayable event after the hidden one
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val firstDisplayedEvent = liveEvents.where()
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.lessThanOrEqualTo(TimelineEventEntityFields.ROOT.DISPLAY_INDEX, displayIndex)
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.findFirst()
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// If we find one, we should
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if (firstDisplayedEvent != null) {
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correctedReadReceiptsEventByIndex.put(index, firstDisplayedEvent.eventId)
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correctedReadReceiptsByEvent
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.getOrPut(firstDisplayedEvent.eventId, {
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ArrayList(readReceiptsSummaryMapper.map(firstDisplayedEvent.readReceipts))
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})
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.addAll(readReceiptsSummaryMapper.map(summary))
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}
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}
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}
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if (correctedReadReceiptsByEvent.isNotEmpty()) {
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correctedReadReceiptsByEvent.forEach { (eventId, correctedReadReceipts) ->
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val sortedReadReceipts = correctedReadReceipts.sortedByDescending {
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it.originServerTs
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}
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hasChange = delegate.rebuildEvent(eventId, sortedReadReceipts) || hasChange
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}
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}
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if (hasChange) {
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delegate.onReadReceiptsUpdated()
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}
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}
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/**
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* Start the realm query subscription. Has to be called on an HandlerThread
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*/
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fun start(realm: Realm, liveEvents: RealmResults<TimelineEventEntity>, delegate: Delegate) {
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this.liveEvents = liveEvents
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this.delegate = delegate
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// We are looking for read receipts set on hidden events.
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// We only accept those with a timelineEvent (so coming from pagination/sync).
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this.hiddenReadReceipts = ReadReceiptsSummaryEntity.whereInRoom(realm, roomId)
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.isNotEmpty(ReadReceiptsSummaryEntityFields.TIMELINE_EVENT)
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.isNotEmpty(ReadReceiptsSummaryEntityFields.READ_RECEIPTS.`$`)
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.filterReceiptsWithSettings()
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.findAllAsync()
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.also { it.addChangeListener(hiddenReadReceiptsListener) }
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}
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/**
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* Dispose the realm query subscription. Has to be called on an HandlerThread
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*/
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fun dispose() {
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this.hiddenReadReceipts.removeAllChangeListeners()
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}
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/**
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* Return the current corrected [ReadReceipt] list for an event, or null
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*/
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fun correctedReadReceipts(eventId: String?): List<ReadReceipt>? {
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return correctedReadReceiptsByEvent[eventId]
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}
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/**
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* We are looking for receipts related to filtered events. So, it's the opposite of [DefaultTimeline.filterEventsWithSettings] method.
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*/
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private fun RealmQuery<ReadReceiptsSummaryEntity>.filterReceiptsWithSettings(): RealmQuery<ReadReceiptsSummaryEntity> {
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beginGroup()
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if (settings.filterTypes) {
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not().`in`("${ReadReceiptsSummaryEntityFields.TIMELINE_EVENT}.${TimelineEventEntityFields.ROOT.TYPE}", settings.allowedTypes.toTypedArray())
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}
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if (settings.filterTypes && settings.filterEdits) {
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or()
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}
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if (settings.filterEdits) {
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like("${ReadReceiptsSummaryEntityFields.TIMELINE_EVENT}.${TimelineEventEntityFields.ROOT.CONTENT}", FilterContent.EDIT_TYPE)
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}
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endGroup()
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return this
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}
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} |