Read marker: fix merged items
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64d73ae8e6
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@ -151,7 +151,7 @@ class TimelineEventController @Inject constructor(private val dateFormatter: Vec
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}
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// Update position when we are building new items
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override fun intercept(models: MutableList<EpoxyModel<*>>) {
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override fun intercept(models: MutableList<EpoxyModel<*>>) = synchronized(modelCache) {
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positionOfReadMarker = null
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adapterPositionMapping.clear()
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models.forEachIndexed { index, epoxyModel ->
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@ -160,8 +160,18 @@ class TimelineEventController @Inject constructor(private val dateFormatter: Vec
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adapterPositionMapping[it] = index
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}
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}
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if (epoxyModel is TimelineReadMarkerItem) {
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positionOfReadMarker = index
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}
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val currentUnreadState = this.unreadState
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if (currentUnreadState is UnreadState.HasUnread) {
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val position = adapterPositionMapping[currentUnreadState.firstUnreadEventId]?.plus(1)
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positionOfReadMarker = position
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if (position != null) {
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val readMarker = TimelineReadMarkerItem_()
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.also {
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it.id("read_marker")
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it.setOnVisibilityStateChanged(ReadMarkerVisibilityStateChangedListener(callback))
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}
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models.add(position, readMarker)
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}
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}
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}
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@ -248,7 +258,7 @@ class TimelineEventController @Inject constructor(private val dateFormatter: Vec
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} else {
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it.eventModel
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}
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listOf(eventModel, it?.mergedHeaderModel, it?.readMarkerModel, it?.formattedDayModel)
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listOf(eventModel, it?.mergedHeaderModel, it?.formattedDayModel)
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}
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.flatten()
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.filterNotNull()
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@ -258,17 +268,16 @@ class TimelineEventController @Inject constructor(private val dateFormatter: Vec
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if (modelCache.isEmpty()) {
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return
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}
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val currentUnreadState = this.unreadState
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(0 until modelCache.size).forEach { position ->
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// Should be build if not cached or if cached but contains additional models
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// We then are sure we always have items up to date.
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if (modelCache[position] == null || modelCache[position]?.shouldTriggerBuild(currentUnreadState) == true) {
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modelCache[position] = buildCacheItem(position, currentSnapshot, currentUnreadState)
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if (modelCache[position] == null || modelCache[position]?.shouldTriggerBuild() == true) {
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modelCache[position] = buildCacheItem(position, currentSnapshot)
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}
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}
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}
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private fun buildCacheItem(currentPosition: Int, items: List<TimelineEvent>, currentUnreadState: UnreadState): CacheItemData {
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private fun buildCacheItem(currentPosition: Int, items: List<TimelineEvent>): CacheItemData {
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val event = items[currentPosition]
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val nextEvent = items.nextOrNull(currentPosition)
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val date = event.root.localDateTime()
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@ -289,25 +298,7 @@ class TimelineEventController @Inject constructor(private val dateFormatter: Vec
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requestModelBuild()
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}
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val daySeparatorItem = buildDaySeparatorItem(addDaySeparator, date)
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val readMarkerItem = buildReadMarkerItem(event, currentUnreadState)
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return CacheItemData(event.localId, event.root.eventId, eventModel, mergedHeaderModel, daySeparatorItem, readMarkerItem)
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}
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private fun buildReadMarkerItem(event: TimelineEvent, currentUnreadState: UnreadState): TimelineReadMarkerItem? {
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return when (currentUnreadState) {
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is UnreadState.HasUnread -> {
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if (event.root.eventId == currentUnreadState.firstUnreadEventId) {
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TimelineReadMarkerItem_()
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.also {
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it.id("read_marker")
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it.setOnVisibilityStateChanged(ReadMarkerVisibilityStateChangedListener(callback))
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}
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} else {
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null
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}
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}
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else -> null
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}
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return CacheItemData(event.localId, event.root.eventId, eventModel, mergedHeaderModel, daySeparatorItem)
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}
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private fun buildDaySeparatorItem(addDaySeparator: Boolean, date: LocalDateTime): DaySeparatorItem? {
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@ -354,14 +345,11 @@ class TimelineEventController @Inject constructor(private val dateFormatter: Vec
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val eventId: String?,
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val eventModel: EpoxyModel<*>? = null,
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val mergedHeaderModel: MergedHeaderItem? = null,
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val formattedDayModel: DaySeparatorItem? = null,
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val readMarkerModel: TimelineReadMarkerItem? = null
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val formattedDayModel: DaySeparatorItem? = null
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) {
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fun shouldTriggerBuild(unreadState: UnreadState): Boolean {
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return mergedHeaderModel != null
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|| formattedDayModel != null
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|| readMarkerModel != null
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|| (unreadState is UnreadState.HasUnread && unreadState.firstUnreadEventId == eventId)
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fun shouldTriggerBuild(): Boolean {
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return mergedHeaderModel != null || formattedDayModel != null
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}
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}
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}
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@ -72,7 +72,11 @@ abstract class MergedHeaderItem : BaseEventItem<MergedHeaderItem.Holder>() {
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}
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override fun getEventIds(): List<String> {
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return attributes.mergeData.map { it.eventId }
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return if (attributes.isCollapsed) {
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attributes.mergeData.map { it.eventId }
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} else {
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emptyList()
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}
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}
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data class Data(
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