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Timeline permalink : automatic focus on live when reaching end of forward pagination (and remove usage of PaginationStatus)

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ganfra 2024-04-23 13:45:41 +02:00
parent f56ac869ff
commit e09e23abb0
4 changed files with 36 additions and 90 deletions
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10
features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineController.kt
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@ -35,11 +35,14 @@ import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.getAndUpdate
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.flow.onEach
import java.util.Optional
import javax.inject.Inject
import kotlin.coroutines.cancellation.CancellationException
/**
* This controller is responsible of using the right timeline to display messages.
* It can be focused on the live timeline or on a detached timeline (focusing an unknown event).
*/
@SingleIn(RoomScope::class)
class TimelineController @Inject constructor(
private val room: MatrixRoom,
@ -92,6 +95,11 @@ class TimelineController @Inject constructor(
suspend fun paginate(direction: Timeline.PaginationDirection): Result<Boolean> {
return currentTimelineFlow().first().paginate(direction)
.onSuccess { hasReachedEnd ->
if (direction == Timeline.PaginationDirection.FORWARDS && hasReachedEnd) {
focusOnLive()
}
}
}
private fun currentTimelineFlow() = combine(liveTimeline, detachedTimeline) { live, detached ->