forked from GitHub-Mirror/riotX-android
58 lines
1.9 KiB
Kotlin
58 lines
1.9 KiB
Kotlin
/*
|
|
* 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.room.read
|
|
|
|
import androidx.lifecycle.Observer
|
|
import com.zhuinden.monarchy.Monarchy
|
|
import im.vector.matrix.android.api.session.room.read.ReadService
|
|
import im.vector.matrix.android.internal.database.model.ReadReceiptEntity
|
|
import im.vector.matrix.android.internal.database.query.where
|
|
|
|
class ReadServiceListeners(private val roomId: String,
|
|
private val monarchy: Monarchy
|
|
) {
|
|
|
|
private val listeners = ArrayList<ReadService.Listener>()
|
|
private val readReceiptsLive by lazy {
|
|
monarchy.findAllManagedWithChanges { realm -> ReadReceiptEntity.where(realm, roomId) }
|
|
}
|
|
private val readReceiptLiveObserver = Observer<Monarchy.ManagedChangeSet<ReadReceiptEntity>> { listeners.forEach { it.onReadReceiptsUpdated() } }
|
|
|
|
fun addListener(listener: ReadService.Listener) {
|
|
if (listeners.isEmpty()) {
|
|
startObservingData()
|
|
}
|
|
listeners.add(listener)
|
|
}
|
|
|
|
fun removeListener(listener: ReadService.Listener) {
|
|
listeners.remove(listener)
|
|
if (listeners.isEmpty()) {
|
|
stopObservingData()
|
|
}
|
|
}
|
|
|
|
private fun startObservingData() {
|
|
readReceiptsLive.observeForever(readReceiptLiveObserver)
|
|
}
|
|
|
|
private fun stopObservingData() {
|
|
readReceiptsLive.removeObserver(readReceiptLiveObserver)
|
|
}
|
|
|
|
|
|
} |