forked from GitHub-Mirror/riotX-android
35 lines
1.2 KiB
Kotlin
35 lines
1.2 KiB
Kotlin
/*
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*
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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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*/
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package im.vector.riotredesign.features.home.room.detail
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import androidx.recyclerview.widget.LinearLayoutManager
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import im.vector.riotredesign.core.platform.DefaultListUpdateCallback
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import java.util.concurrent.atomic.AtomicBoolean
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class ScrollOnNewMessageCallback(private val layoutManager: LinearLayoutManager) : DefaultListUpdateCallback {
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var isLocked = AtomicBoolean(true)
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override fun onInserted(position: Int, count: Int) {
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if (isLocked.compareAndSet(false, true) && position == 0 && layoutManager.findFirstVisibleItemPosition() == 0) {
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layoutManager.scrollToPosition(0)
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}
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}
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} |