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Media Viewer: show snackbar when reaching end of timeline.

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This commit is contained in:
Benoit Marty
2025-01-27 11:14:43 +01:00
parent fa617dbda8
commit 08083a8765
1 changed files with 49 additions and 0 deletions
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49
libraries/mediaviewer/impl/src/main/kotlin/io/element/android/libraries/mediaviewer/impl/viewer/MediaViewerPresenter.kt
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@@ -10,12 +10,15 @@ package io.element.android.libraries.mediaviewer.impl.viewer
import android.content.ActivityNotFoundException
import androidx.compose.runtime.Composable
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.derivedStateOf
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.runtime.snapshotFlow
import dagger.assisted.Assisted
import dagger.assisted.AssistedFactory
import dagger.assisted.AssistedInject
@@ -31,10 +34,15 @@ import io.element.android.libraries.matrix.api.room.powerlevels.canRedactOwn
import io.element.android.libraries.matrix.api.timeline.item.event.toEventOrTransactionId
import io.element.android.libraries.mediaviewer.api.MediaViewerEntryPoint
import io.element.android.libraries.mediaviewer.api.local.LocalMedia
import io.element.android.libraries.mediaviewer.impl.R
import io.element.android.libraries.mediaviewer.impl.details.MediaBottomSheetState
import io.element.android.libraries.mediaviewer.impl.local.LocalMediaActions
import io.element.android.libraries.ui.strings.CommonStrings
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.flow.distinctUntilChanged
import kotlinx.coroutines.flow.filter
import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.launch
import io.element.android.libraries.androidutils.R as UtilsR
@@ -64,6 +72,37 @@ class MediaViewerPresenter @AssistedInject constructor(
var currentIndex by remember { mutableIntStateOf(searchIndex(data, inputs.eventId)) }
val snackbarMessage by snackbarDispatcher.collectSnackbarMessageAsState()
val isRenderingLoadingBackward by remember {
derivedStateOf {
currentIndex == data.lastIndex && data.lastOrNull() is MediaViewerPageData.Loading
}
}
if (isRenderingLoadingBackward) {
LaunchedEffect(Unit) {
// Observe the loading data vanishing
snapshotFlow { data.lastOrNull() is MediaViewerPageData.Loading }
.distinctUntilChanged()
.filter { !it }
.onEach { showNoMoreItemsSnackbar() }
.launchIn(this)
}
}
val isRenderingLoadingForward by remember {
derivedStateOf {
currentIndex == 0 && data.firstOrNull() is MediaViewerPageData.Loading
}
}
if (isRenderingLoadingForward) {
LaunchedEffect(Unit) {
// Observe the loading data vanishing
snapshotFlow { data.firstOrNull() is MediaViewerPageData.Loading }
.distinctUntilChanged()
.filter { !it }
.onEach { showNoMoreItemsSnackbar() }
.launchIn(this)
}
}
var mediaBottomSheetState by remember { mutableStateOf<MediaBottomSheetState>(MediaBottomSheetState.Hidden) }
DisposableEffect(Unit) {
@@ -143,6 +182,16 @@ class MediaViewerPresenter @AssistedInject constructor(
)
}
private fun showNoMoreItemsSnackbar() {
val messageResId = when (inputs.mode) {
MediaViewerEntryPoint.MediaViewerMode.SingleMedia,
MediaViewerEntryPoint.MediaViewerMode.TimelineImagesAndVideos -> R.string.screen_media_details_no_more_media_to_show
MediaViewerEntryPoint.MediaViewerMode.TimelineFilesAndAudios -> R.string.screen_media_details_no_more_files_to_show
}
val message = SnackbarMessage(messageResId)
snackbarDispatcher.post(message)
}
private fun CoroutineScope.downloadMedia(
data: MediaViewerPageData.MediaViewerData,
) = launch {