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✨ Flowcharts Content Rendering Support #620 #1415

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Merged
Parent: 🐛 Fix opensource-memorial-wall.md
merged 2 commits into from
Oct 23, 2025
Merged

✨ Flowcharts Content Rendering Support #620 #1415

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01e9595
✨ Flowcharts Content Rendering Support #620
WMC001 Oct 22, 2025
8c9c4ab
Fix unit test cause by version of opentelemetry
WMC001 Oct 23, 2025
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40 changes: 40 additions & 0 deletions frontend/app/[locale]/chat/streaming/chatStreamMain.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -398,6 +398,46 @@ export function ChatStreamMain({
shouldScrollToBottom,
]);

// Additional scroll trigger for async content like Mermaid diagrams
useEffect(() => {
if (processedMessages.finalMessages.length > 0 && autoScroll) {
const scrollAreaElement = scrollAreaRef.current?.querySelector(
"[data-radix-scroll-area-viewport]"
);
if (!scrollAreaElement) return;

// Use ResizeObserver to detect when content height changes (e.g., Mermaid diagrams finish rendering)
const resizeObserver = new ResizeObserver(() => {
const { scrollTop, scrollHeight, clientHeight } =
scrollAreaElement as HTMLElement;
const distanceToBottom = scrollHeight - scrollTop - clientHeight;

// Auto-scroll if user is near bottom and content height changed
if (distanceToBottom < 100) {
scrollToBottom();
}
});

resizeObserver.observe(scrollAreaElement);

// Also use a timeout as fallback for async content
const timeoutId = setTimeout(() => {
const { scrollTop, scrollHeight, clientHeight } =
scrollAreaElement as HTMLElement;
const distanceToBottom = scrollHeight - scrollTop - clientHeight;

if (distanceToBottom < 100) {
scrollToBottom();
}
}, 1000); // Wait 1 second for async content to render

return () => {
resizeObserver.disconnect();
clearTimeout(timeoutId);
};
}
}, [processedMessages.finalMessages.length, autoScroll]);

// Scroll to bottom when task messages are updated
useEffect(() => {
if (autoScroll) {
Expand Down
41 changes: 37 additions & 4 deletions frontend/app/[locale]/chat/streaming/taskWindow.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -664,6 +664,7 @@ const messageHandlers: MessageHandler[] = [
<MarkdownRenderer
content={message.content}
className="task-message-content"
showDiagramToggle={false}
/>
</div>
),
Expand Down Expand Up @@ -757,6 +758,7 @@ const messageHandlers: MessageHandler[] = [
<MarkdownRenderer
content={content}
className="task-message-content"
showDiagramToggle={false}
/>
);
} else {
Expand Down Expand Up @@ -1061,7 +1063,8 @@ export function TaskWindow({ messages, isStreaming = false }: TaskWindowProps) {
const maxHeight = 300;
const headerHeight = 55;
const availableHeight = maxHeight - headerHeight;
const actualContentHeight = Math.min(contentHeight + 16, availableHeight);
// Add extra padding for diagrams to prevent bottom cutoff
const actualContentHeight = Math.min(contentHeight + 32, availableHeight);
const containerHeight = isExpanded
? headerHeight + actualContentHeight
: "auto";
Expand Down Expand Up @@ -1096,15 +1099,15 @@ export function TaskWindow({ messages, isStreaming = false }: TaskWindowProps) {
</div>

{isExpanded && (
<div className="px-4" style={{ height: `${actualContentHeight}px` }}>
<div className="px-4 pb-4" style={{ height: `${actualContentHeight}px` }}>
{needsScroll ? (
<ScrollArea className="h-full" ref={scrollAreaRef}>
<div className="" ref={contentRef}>
<div className="pb-2" ref={contentRef}>
{renderMessages()}
</div>
</ScrollArea>
) : (
<div className="" ref={contentRef}>
<div className="pb-2" ref={contentRef}>
{renderMessages()}
</div>
)}
Expand Down Expand Up @@ -1183,6 +1186,36 @@ export function TaskWindow({ messages, isStreaming = false }: TaskWindowProps) {
box-sizing: border-box !important;
}

/* Override diagram size in task window */
.task-message-content .my-4 {
max-width: 200px !important;
margin: 0 auto !important;
display: flex !important;
justify-content: center !important;
}

.task-message-content .my-4 img {
max-width: 200px !important;
width: 200px !important;
margin: 0 auto !important;
display: block !important;
}

/* More specific selectors for mermaid diagrams */
.task-message-content .task-message-content .my-4 {
max-width: 200px !important;
margin: 0 auto !important;
display: flex !important;
justify-content: center !important;
}

.task-message-content .task-message-content .my-4 img {
max-width: 200px !important;
width: 200px !important;
margin: 0 auto !important;
display: block !important;
}

/* Paragraph spacing adjustment */
.task-message-content p {
margin-bottom: 0.5rem !important;
Expand Down
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