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ViewPager: never react to own space-changes

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Change-Id: I45a1fd1e9ec6048dffdc4d54e8022d53afc627ff
This commit is contained in:
SpiritCroc 2022-03-31 09:12:28 +02:00
parent f50b21d9b7
commit e21f9443d5
4 changed files with 30 additions and 25 deletions
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34
vector/src/main/java/im/vector/app/AppStateHandler.kt
View file

@ -19,6 +19,7 @@ package im.vector.app
import androidx.lifecycle.DefaultLifecycleObserver
import androidx.lifecycle.LifecycleOwner
import arrow.core.Option
import arrow.core.getOrElse
import im.vector.app.core.di.ActiveSessionHolder
import im.vector.app.core.utils.BehaviorDataSource
import im.vector.app.features.session.coroutineScope
@ -28,7 +29,9 @@ import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.SupervisorJob
import kotlinx.coroutines.cancelChildren
import kotlinx.coroutines.flow.distinctUntilChanged
import kotlinx.coroutines.flow.filter
import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.launch
import org.matrix.android.sdk.api.extensions.tryOrNull
@ -59,16 +62,21 @@ class AppStateHandler @Inject constructor(
) : DefaultLifecycleObserver {
private val coroutineScope = CoroutineScope(SupervisorJob() + Dispatchers.Main)
private val selectedSpaceDataSource = BehaviorDataSource<Option<RoomGroupingMethod>>(Option.empty())
///private val selectedSpaceDataSource = BehaviorDataSource<Option<RoomGroupingMethod>>(Option.empty())
val selectedRoomGroupingFlow = selectedSpaceDataSource.stream()
// SchildiChat: the boolean means pendingSwipe and defaults to false. Set to true for swiping spaces, so you want to ignore updates which have pendingSwipe = true.
// Call it different then the upstream one so we don't forget adding `first` to upstream's logic.
private val selectedSpaceDataSourceSc = BehaviorDataSource<Option<Pair<RoomGroupingMethod, Boolean>>>(Option.empty())
val selectedRoomGroupingFlow = selectedSpaceDataSourceSc.stream().map { it.map { it.first } }
val selectedRoomGroupingFlowIgnoreSwipe = selectedSpaceDataSourceSc.stream().filter { it.getOrElse{ null }?.second != true }.map { it.map { it.first } }
fun getCurrentRoomGroupingMethod(): RoomGroupingMethod? {
// XXX we should somehow make it live :/ just a work around
// For example just after creating a space and switching to it the
// name in the app Bar could show Empty Room, and it will not update unless you
// switch space
return selectedSpaceDataSource.currentValue?.orNull()?.let {
return selectedSpaceDataSourceSc.currentValue?.orNull()?.first?.let {
if (it is RoomGroupingMethod.BySpace) {
// try to refresh sum?
it.spaceSummary?.roomId?.let { activeSessionHolder.getSafeActiveSession()?.getRoomSummary(it) }?.let {
@ -78,10 +86,10 @@ class AppStateHandler @Inject constructor(
}
}
fun setCurrentSpace(spaceId: String?, session: Session? = null, persistNow: Boolean = false) {
fun setCurrentSpace(spaceId: String?, session: Session? = null, persistNow: Boolean = false, pendingSwipe: Boolean = false) {
val uSession = session ?: activeSessionHolder.getSafeActiveSession() ?: return
if (selectedSpaceDataSource.currentValue?.orNull() is RoomGroupingMethod.BySpace &&
spaceId == selectedSpaceDataSource.currentValue?.orNull()?.space()?.roomId) return
if (selectedSpaceDataSourceSc.currentValue?.orNull()?.first is RoomGroupingMethod.BySpace &&
spaceId == selectedSpaceDataSourceSc.currentValue?.orNull()?.first?.space()?.roomId) return
val spaceSum = spaceId?.let { uSession.getRoomSummary(spaceId) }
if (persistNow) {
@ -89,7 +97,7 @@ class AppStateHandler @Inject constructor(
uiStateRepository.storeSelectedSpace(spaceSum?.roomId, uSession.sessionId)
}
selectedSpaceDataSource.post(Option.just(RoomGroupingMethod.BySpace(spaceSum)))
selectedSpaceDataSourceSc.post(Option.just(Pair(RoomGroupingMethod.BySpace(spaceSum), pendingSwipe)))
if (spaceId != null) {
uSession.coroutineScope.launch(Dispatchers.IO) {
tryOrNull {
@ -101,10 +109,10 @@ class AppStateHandler @Inject constructor(
fun setCurrentGroup(groupId: String?, session: Session? = null) {
val uSession = session ?: activeSessionHolder.getSafeActiveSession() ?: return
if (selectedSpaceDataSource.currentValue?.orNull() is RoomGroupingMethod.ByLegacyGroup &&
groupId == selectedSpaceDataSource.currentValue?.orNull()?.group()?.groupId) return
if (selectedSpaceDataSourceSc.currentValue?.orNull()?.first is RoomGroupingMethod.ByLegacyGroup &&
groupId == selectedSpaceDataSourceSc.currentValue?.orNull()?.first?.group()?.groupId) return
val activeGroup = groupId?.let { uSession.getGroupSummary(groupId) }
selectedSpaceDataSource.post(Option.just(RoomGroupingMethod.ByLegacyGroup(activeGroup)))
selectedSpaceDataSourceSc.post(Option.just(Pair(RoomGroupingMethod.ByLegacyGroup(activeGroup), false)))
if (groupId != null) {
uSession.coroutineScope.launch {
tryOrNull {
@ -131,11 +139,11 @@ class AppStateHandler @Inject constructor(
}
fun safeActiveSpaceId(): String? {
return (selectedSpaceDataSource.currentValue?.orNull() as? RoomGroupingMethod.BySpace)?.spaceSummary?.roomId
return (selectedSpaceDataSourceSc.currentValue?.orNull()?.first as? RoomGroupingMethod.BySpace)?.spaceSummary?.roomId
}
fun safeActiveGroupId(): String? {
return (selectedSpaceDataSource.currentValue?.orNull() as? RoomGroupingMethod.ByLegacyGroup)?.groupSummary?.groupId
return (selectedSpaceDataSourceSc.currentValue?.orNull()?.first as? RoomGroupingMethod.ByLegacyGroup)?.groupSummary?.groupId
}
override fun onResume(owner: LifecycleOwner) {
@ -145,7 +153,7 @@ class AppStateHandler @Inject constructor(
override fun onPause(owner: LifecycleOwner) {
coroutineScope.coroutineContext.cancelChildren()
val session = activeSessionHolder.getSafeActiveSession() ?: return
when (val currentMethod = selectedSpaceDataSource.currentValue?.orNull() ?: RoomGroupingMethod.BySpace(null)) {
when (val currentMethod = selectedSpaceDataSourceSc.currentValue?.orNull()?.first ?: RoomGroupingMethod.BySpace(null)) {
is RoomGroupingMethod.BySpace -> {
uiStateRepository.storeGroupingMethod(true, session.sessionId)
uiStateRepository.storeSelectedSpace(currentMethod.spaceSummary?.roomId, session.sessionId)

14
vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt
View file

@ -105,7 +105,6 @@ class HomeDetailFragment @Inject constructor(
private var pagerSpaces: List<String?>? = null
private var pagerTab: HomeTab? = null
private var pagerPagingEnabled: Boolean = false
private val pendingSpaceIds = mutableListOf<String?>()
override fun getMenuRes() = R.menu.room_list
@ -163,8 +162,7 @@ class HomeDetailFragment @Inject constructor(
}
}
val selectedId = getSpaceIdForPageIndex(position)
pendingSpaceIds.add(selectedId)
appStateHandler.setCurrentSpace(selectedId)
appStateHandler.setCurrentSpace(selectedId, pendingSwipe = true)
}
})
@ -225,7 +223,7 @@ class HomeDetailFragment @Inject constructor(
)
}
viewModel.onEach(HomeDetailViewState::roomGroupingMethod, HomeDetailViewState::rootSpacesOrdered, HomeDetailViewState::currentTab) { roomGroupingMethod, rootSpacesOrdered, currentTab ->
viewModel.onEach(HomeDetailViewState::roomGroupingMethodIgnoreSwipe, HomeDetailViewState::rootSpacesOrdered, HomeDetailViewState::currentTab) { roomGroupingMethod, rootSpacesOrdered, currentTab ->
setupViewPager(roomGroupingMethod, rootSpacesOrdered, currentTab)
}
@ -529,13 +527,6 @@ class HomeDetailFragment @Inject constructor(
if (!changed) {
if (pagingEnabled) {
// No need to re-setup pager, just check for selected page
// Discard state changes that we created ourselves by swiping on the pager
while (pendingSpaceIds.size > 0) {
val pendingSpaceId = pendingSpaceIds.removeAt(0)
if (pendingSpaceId == selectedSpaceId) {
return
}
}
if (selectedIndex != null) {
if (selectedIndex != views.roomListContainerPager.currentItem) {
// post() mitigates a case where we could end up in an endless loop circling around the same few spaces
@ -566,7 +557,6 @@ class HomeDetailFragment @Inject constructor(
pagerTab = tab
pagerPagingEnabled = pagingEnabled
initialPageSelected = false
pendingSpaceIds.clear()
// OFFSCREEN_PAGE_LIMIT_DEFAULT: default recyclerview caching mechanism instead of explicit fixed prefetching
//views.roomListContainerPager.offscreenPageLimit = 2

6
vector/src/main/java/im/vector/app/features/home/HomeDetailViewModel.kt
View file

@ -212,6 +212,12 @@ class HomeDetailViewModel @AssistedInject constructor(
roomGroupingMethod = it.orNull() ?: RoomGroupingMethod.BySpace(null)
)
}
appStateHandler.selectedRoomGroupingFlowIgnoreSwipe
.setOnEach {
copy(
roomGroupingMethodIgnoreSwipe = it.orNull() ?: RoomGroupingMethod.BySpace(null)
)
}
}
private fun observeRoomSummaries() {

1
vector/src/main/java/im/vector/app/features/home/HomeDetailViewState.kt
View file

@ -29,6 +29,7 @@ import org.matrix.android.sdk.api.util.MatrixItem
data class HomeDetailViewState(
val roomGroupingMethod: RoomGroupingMethod = RoomGroupingMethod.BySpace(null),
val roomGroupingMethodIgnoreSwipe: RoomGroupingMethod = RoomGroupingMethod.BySpace(null),
val myMatrixItem: MatrixItem? = null,
val asyncRooms: Async<List<RoomSummary>> = Uninitialized,
val currentTab: HomeTab = HomeTab.RoomList(RoomListDisplayMode.ALL),