ganfra
2 years ago
13 changed files with 293 additions and 161 deletions
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/* |
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* Copyright (c) 2023 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 io.element.android.features.messages.timeline.components.event |
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import androidx.compose.foundation.interaction.MutableInteractionSource |
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import androidx.compose.runtime.Composable |
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import androidx.compose.ui.Modifier |
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import io.element.android.features.messages.timeline.model.event.TimelineItemEncryptedContent |
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import io.element.android.features.messages.timeline.model.event.TimelineItemEventContent |
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import io.element.android.features.messages.timeline.model.event.TimelineItemImageContent |
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import io.element.android.features.messages.timeline.model.event.TimelineItemRedactedContent |
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import io.element.android.features.messages.timeline.model.event.TimelineItemTextBasedContent |
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import io.element.android.features.messages.timeline.model.event.TimelineItemUnknownContent |
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@Composable |
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fun TimelineItemEventContentView( |
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content: TimelineItemEventContent, |
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interactionSource: MutableInteractionSource, |
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onClick: () -> Unit, |
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onLongClick: () -> Unit, |
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modifier: Modifier = Modifier |
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) { |
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when (content) { |
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is TimelineItemEncryptedContent -> TimelineItemEncryptedView( |
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content = content, |
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modifier = modifier |
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) |
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is TimelineItemRedactedContent -> TimelineItemRedactedView( |
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content = content, |
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modifier = modifier |
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) |
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is TimelineItemTextBasedContent -> TimelineItemTextView( |
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content = content, |
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interactionSource = interactionSource, |
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modifier = modifier, |
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onTextClicked = onClick, |
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onTextLongClicked = onLongClick |
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) |
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is TimelineItemUnknownContent -> TimelineItemUnknownView( |
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content = content, |
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modifier = modifier |
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) |
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is TimelineItemImageContent -> TimelineItemImageView( |
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content = content, |
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modifier = modifier |
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) |
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} |
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} |
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@ -0,0 +1,118 @@ |
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/* |
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* Copyright (c) 2023 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 io.element.android.libraries.matrix.timeline |
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import kotlinx.coroutines.CoroutineDispatcher |
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import kotlinx.coroutines.CoroutineScope |
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import kotlinx.coroutines.flow.MutableStateFlow |
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import kotlinx.coroutines.launch |
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import kotlinx.coroutines.withContext |
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import org.matrix.rustcomponents.sdk.TimelineChange |
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import org.matrix.rustcomponents.sdk.TimelineDiff |
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import org.matrix.rustcomponents.sdk.TimelineListener |
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import org.matrix.rustcomponents.sdk.VirtualTimelineItem |
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internal class MatrixTimelineDiffProcessor( |
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private val paginationState: MutableStateFlow<MatrixTimeline.PaginationState>, |
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private val timelineItems: MutableStateFlow<List<MatrixTimelineItem>>, |
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private val coroutineScope: CoroutineScope, |
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private val diffDispatcher: CoroutineDispatcher, |
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) : TimelineListener { |
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override fun onUpdate(update: TimelineDiff) { |
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coroutineScope.launch { |
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updateTimelineItems { |
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applyDiff(update) |
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} |
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when (val firstItem = timelineItems.value.firstOrNull()) { |
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is MatrixTimelineItem.Virtual -> updateBackPaginationState(firstItem.virtual) |
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else -> updateBackPaginationState(null) |
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} |
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} |
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} |
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private fun updateBackPaginationState(virtualItem: VirtualTimelineItem?) { |
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val currentPaginationState = paginationState.value |
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val newPaginationState = when (virtualItem) { |
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VirtualTimelineItem.LoadingIndicator -> currentPaginationState.copy( |
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isBackPaginating = true, |
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canBackPaginate = true |
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) |
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VirtualTimelineItem.TimelineStart -> currentPaginationState.copy( |
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isBackPaginating = false, |
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canBackPaginate = false |
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) |
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else -> currentPaginationState.copy( |
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isBackPaginating = false, |
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canBackPaginate = true |
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) |
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} |
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paginationState.value = newPaginationState |
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} |
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private suspend fun updateTimelineItems(block: MutableList<MatrixTimelineItem>.() -> Unit) = |
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withContext(diffDispatcher) { |
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val mutableTimelineItems = timelineItems.value.toMutableList() |
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block(mutableTimelineItems) |
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timelineItems.value = mutableTimelineItems |
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} |
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private fun MutableList<MatrixTimelineItem>.applyDiff(diff: TimelineDiff) { |
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when (diff.change()) { |
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TimelineChange.APPEND -> { |
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val items = diff.append()?.map { it.asMatrixTimelineItem() } ?: return |
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addAll(items) |
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} |
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TimelineChange.PUSH_BACK -> { |
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val item = diff.pushBack()?.asMatrixTimelineItem() ?: return |
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add(item) |
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} |
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TimelineChange.PUSH_FRONT -> { |
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val item = diff.pushFront()?.asMatrixTimelineItem() ?: return |
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add(0, item) |
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} |
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TimelineChange.SET -> { |
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val updateAtData = diff.set() ?: return |
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val item = updateAtData.item.asMatrixTimelineItem() |
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set(updateAtData.index.toInt(), item) |
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} |
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TimelineChange.INSERT -> { |
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val insertAtData = diff.insert() ?: return |
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val item = insertAtData.item.asMatrixTimelineItem() |
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add(insertAtData.index.toInt(), item) |
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} |
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TimelineChange.REMOVE -> { |
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val removeAtData = diff.remove() ?: return |
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removeAt(removeAtData.toInt()) |
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} |
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TimelineChange.RESET -> { |
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clear() |
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val items = diff.reset()?.map { it.asMatrixTimelineItem() } ?: return |
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addAll(items) |
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} |
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TimelineChange.POP_FRONT -> { |
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removeFirstOrNull() |
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} |
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TimelineChange.POP_BACK -> { |
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removeLastOrNull() |
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} |
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TimelineChange.CLEAR -> { |
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clear() |
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} |
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} |
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} |
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} |
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