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DROID-2966 Chats | Fix | Enhance auto-scroll-to-bottom behavior (#2413)

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This commit is contained in:
Evgenii Kozlov 2025-05-19 18:02:16 +02:00 • committed by GitHub
parent b2248869df
commit 6a46ddb8d8
Signed by: github
GPG key ID: B5690EEEBB952194
1 changed files with 33 additions and 15 deletions
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48
feature-chats/src/main/java/com/anytypeio/anytype/feature_chats/ui/ChatScreen.kt
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@ -433,6 +433,21 @@ fun ChatScreen(
}
}
// Jump to bottom button shows up when user scrolls past a threshold.
// Convert to pixels:
val jumpThreshold = with(LocalDensity.current) {
JumpToBottomThreshold.toPx()
}
// Show the button if the first visible item is not the first one or if the offset is
// greater than the threshold.
val jumpToBottomButtonEnabled by remember {
derivedStateOf {
lazyListState.firstVisibleItemIndex != 0 ||
lazyListState.firstVisibleItemScrollOffset > jumpThreshold
}
}
val isAtBottom by remember {
derivedStateOf {
lazyListState.firstVisibleItemIndex == 0 &&
@ -440,10 +455,27 @@ fun ChatScreen(
}
}
var wasAtBottom by remember { mutableStateOf(isAtBottom) }
LaunchedEffect(lazyListState) {
snapshotFlow {
val layoutInfo = lazyListState.layoutInfo
layoutInfo.visibleItemsInfo.firstOrNull()?.index == 0 &&
layoutInfo.visibleItemsInfo.firstOrNull()?.offset == 0
}
.distinctUntilChanged()
.collect { atBottom ->
wasAtBottom = atBottom
Timber.d("DROID-2966 Updated wasAtBottom: $wasAtBottom")
}
}
// Scrolling to bottom when list size changes and we are at the bottom of the list
LaunchedEffect(messages.size) {
if (isAtBottom && !isPerformingScrollIntent.value) {
if (wasAtBottom && !isPerformingScrollIntent.value) {
lazyListState.animateScrollToItem(0)
} else {
Timber.d("DROID-2966 Skipping auto-scroll")
}
}
@ -497,20 +529,6 @@ fun ChatScreen(
onMentionClicked = onMentionClicked,
onScrollToReplyClicked = onScrollToReplyClicked
)
// Jump to bottom button shows up when user scrolls past a threshold.
// Convert to pixels:
val jumpThreshold = with(LocalDensity.current) {
JumpToBottomThreshold.toPx()
}
// Show the button if the first visible item is not the first one or if the offset is
// greater than the threshold.
val jumpToBottomButtonEnabled by remember {
derivedStateOf {
lazyListState.firstVisibleItemIndex != 0 ||
lazyListState.firstVisibleItemScrollOffset > jumpThreshold
}
}
GoToBottomButton(
modifier = Modifier