forked from GitHub-Mirror/riotX-android
44 lines
1.5 KiB
Kotlin
44 lines
1.5 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.timeline.helper
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import androidx.recyclerview.widget.DiffUtil
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import im.vector.matrix.android.api.session.room.timeline.TimelineEvent
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class TimelineEventDiffUtilCallback(private val oldList: List<TimelineEvent>,
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private val newList: List<TimelineEvent>) : DiffUtil.Callback() {
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override fun getOldListSize(): Int {
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return oldList.size
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}
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override fun getNewListSize(): Int {
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return newList.size
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}
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override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
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val oldItem = oldList[oldItemPosition]
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val newItem = newList[newItemPosition]
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return oldItem.localId == newItem.localId
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}
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override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
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val oldItem = oldList[oldItemPosition]
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val newItem = newList[newItemPosition]
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return oldItem == newItem
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}
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} |