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feat(web): add scroll to bottom pill in chat view #619

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Merged
juliusmarminge merged 4 commits into from
Mar 14, 2026
+59 −40
Merged

feat(web): add scroll to bottom pill in chat view #619

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1b23d54
feat(web): add scroll to bottom pill in chat view
saishankar404 Mar 9, 2026
21a6c3a
fix scroll to bottom pill positioning
saishankar404 Mar 13, 2026
245a57f
refactor: simplify scroll-to-bottom pill with pure CSS positioning
saishankar404 Mar 14, 2026
fa44d8f
resolve chatview conflict
saishankar404 Mar 14, 2026
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99 changes: 59 additions & 40 deletions apps/web/src/components/ChatView.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -242,6 +242,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
(store) => store.draftThreadsByThreadId[threadId] ?? null,
);
const promptRef = useRef(prompt);
const [showScrollToBottom, setShowScrollToBottom] = useState(false);
const [isDragOverComposer, setIsDragOverComposer] = useState(false);
const [expandedImage, setExpandedImage] = useState<ExpandedImagePreview | null>(null);
const [optimisticUserMessages, setOptimisticUserMessages] = useState<ChatMessage[]>([]);
Expand Down Expand Up @@ -1587,6 +1588,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
}
}

setShowScrollToBottom(!shouldAutoScrollRef.current);
lastKnownScrollTopRef.current = currentScrollTop;
}, []);
const onMessagesWheel = useCallback((event: React.WheelEvent<HTMLDivElement>) => {
Expand Down Expand Up @@ -3259,45 +3261,62 @@ export default function ChatView({ threadId }: ChatViewProps) {
<div className="flex min-h-0 min-w-0 flex-1">
{/* Chat column */}
<div className="flex min-h-0 min-w-0 flex-1 flex-col">
{/* Messages */}
<div
ref={setMessagesScrollContainerRef}
className="min-h-0 flex-1 overflow-x-hidden overflow-y-auto overscroll-y-contain px-3 py-3 sm:px-5 sm:py-4"
onScroll={onMessagesScroll}
onClickCapture={onMessagesClickCapture}
onWheel={onMessagesWheel}
onPointerDown={onMessagesPointerDown}
onPointerUp={onMessagesPointerUp}
onPointerCancel={onMessagesPointerCancel}
onTouchStart={onMessagesTouchStart}
onTouchMove={onMessagesTouchMove}
onTouchEnd={onMessagesTouchEnd}
onTouchCancel={onMessagesTouchEnd}
>
<MessagesTimeline
key={activeThread.id}
hasMessages={timelineEntries.length > 0}
isWorking={isWorking}
activeTurnInProgress={isWorking || !latestTurnSettled}
activeTurnStartedAt={activeWorkStartedAt}
scrollContainer={messagesScrollElement}
timelineEntries={timelineEntries}
completionDividerBeforeEntryId={completionDividerBeforeEntryId}
completionSummary={completionSummary}
turnDiffSummaryByAssistantMessageId={turnDiffSummaryByAssistantMessageId}
nowIso={nowIso}
expandedWorkGroups={expandedWorkGroups}
onToggleWorkGroup={onToggleWorkGroup}
onOpenTurnDiff={onOpenTurnDiff}
revertTurnCountByUserMessageId={revertTurnCountByUserMessageId}
onRevertUserMessage={onRevertUserMessage}
isRevertingCheckpoint={isRevertingCheckpoint}
onImageExpand={onExpandTimelineImage}
markdownCwd={gitCwd ?? undefined}
resolvedTheme={resolvedTheme}
timestampFormat={timestampFormat}
workspaceRoot={activeProject?.cwd ?? undefined}
/>
{/* Messages Wrapper */}
<div className="relative flex min-h-0 flex-1 flex-col">
{/* Messages */}
<div
ref={setMessagesScrollContainerRef}
className="min-h-0 flex-1 overflow-x-hidden overflow-y-auto overscroll-y-contain px-3 py-3 sm:px-5 sm:py-4"
onScroll={onMessagesScroll}
onClickCapture={onMessagesClickCapture}
onWheel={onMessagesWheel}
onPointerDown={onMessagesPointerDown}
onPointerUp={onMessagesPointerUp}
onPointerCancel={onMessagesPointerCancel}
onTouchStart={onMessagesTouchStart}
onTouchMove={onMessagesTouchMove}
onTouchEnd={onMessagesTouchEnd}
onTouchCancel={onMessagesTouchEnd}
>
<MessagesTimeline
key={activeThread.id}
hasMessages={timelineEntries.length > 0}
isWorking={isWorking}
activeTurnInProgress={isWorking || !latestTurnSettled}
activeTurnStartedAt={activeWorkStartedAt}
scrollContainer={messagesScrollElement}
timelineEntries={timelineEntries}
completionDividerBeforeEntryId={completionDividerBeforeEntryId}
completionSummary={completionSummary}
turnDiffSummaryByAssistantMessageId={turnDiffSummaryByAssistantMessageId}
nowIso={nowIso}
expandedWorkGroups={expandedWorkGroups}
onToggleWorkGroup={onToggleWorkGroup}
onOpenTurnDiff={onOpenTurnDiff}
revertTurnCountByUserMessageId={revertTurnCountByUserMessageId}
onRevertUserMessage={onRevertUserMessage}
isRevertingCheckpoint={isRevertingCheckpoint}
onImageExpand={onExpandTimelineImage}
markdownCwd={gitCwd ?? undefined}
resolvedTheme={resolvedTheme}
timestampFormat={timestampFormat}
workspaceRoot={activeProject?.cwd ?? undefined}
/>
</div>

{/* scroll to bottom pill — shown when user has scrolled away from the bottom */}
{showScrollToBottom && (
<div className="pointer-events-none absolute bottom-1 left-1/2 z-30 flex -translate-x-1/2 justify-center py-1.5">
<button
type="button"
onClick={() => scrollMessagesToBottom("smooth")}
className="pointer-events-auto flex items-center gap-1.5 rounded-full border border-border/60 bg-card px-3 py-1 text-muted-foreground text-xs shadow-sm transition-colors hover:bg-accent hover:text-accent-foreground"
>
<ChevronDownIcon className="size-3.5" />
Scroll to bottom
</button>
</div>
)}
</div>

{/* Input bar */}
Expand Down Expand Up @@ -3328,7 +3347,7 @@ export default function ChatView({ threadId }: ChatViewProps) {
<div className="rounded-t-[19px] border-b border-border/65 bg-muted/20">
<ComposerPendingUserInputPanel
pendingUserInputs={pendingUserInputs}
respondingRequestIds={respondingUserInputRequestIds}
respondingRequestIds={respondingRequestIds}
answers={activePendingDraftAnswers}
questionIndex={activePendingQuestionIndex}
onSelectOption={onSelectActivePendingUserInputOption}
Expand Down