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Merged
Sherry-hue merged 1 commit into from
May 18, 2026
Merged

chore(a2ui): generated output should show left #2657

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7 changes: 6 additions & 1 deletion packages/genui/a2ui-playground/src/components/PreviewPanel.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ export interface PreviewQrItem {
variant?: 'default' | 'alt';
placeholder?: ReactNode;
errorDescription?: ReactNode;
showQrCode?: boolean;
}

interface A2UIPreviewSource {
Expand Down Expand Up @@ -445,6 +446,8 @@ export function PreviewPanel(props: PreviewPanelProps) {
return [];
}

const showQrCode = previewSource.kind !== 'a2ui' || !!previewSource.demoId;

const cards: Array<{ key: string; item: PreviewQrItem }> = [];
if (renderShareUrl) {
cards.push({
Expand All @@ -455,6 +458,7 @@ export function PreviewPanel(props: PreviewPanelProps) {
url: renderShareUrl,
urlTitle: formatUrlForDisplay(renderShareUrl),
copyButtonTitle: 'Copy render URL',
showQrCode,
},
});
}
Expand All @@ -468,6 +472,7 @@ export function PreviewPanel(props: PreviewPanelProps) {
urlTitle: formatUrlForDisplay(lynxDevUrl),
copyButtonTitle: 'Copy Lynx dev bundle URL',
variant: 'alt',
showQrCode,
},
});
}
Expand Down Expand Up @@ -655,7 +660,7 @@ export function PreviewPanel(props: PreviewPanelProps) {
</button>
</div>
</div>
{item.url
{item.url && item.showQrCode !== false
? (
<QrCode
value={item.url}
Expand Down
63 changes: 63 additions & 0 deletions packages/genui/a2ui-playground/src/pages/AIChatPage.css
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Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,69 @@
border-bottom-left-radius: 4px;
}

.chatGeneratedJson {
width: 100%;
max-width: 100%;
align-self: stretch;
border: 1px solid var(--geist-border);
border-radius: var(--geist-radius-md);
overflow: hidden;
background: var(--geist-code-bg);
flex-shrink: 0;
}

.chatGeneratedJsonTitle {
display: flex;
align-items: center;
gap: 8px;
min-height: 34px;
padding: 0 12px;
border-bottom: 1px solid var(--geist-border);
background: var(--geist-background);
color: var(--geist-secondary);
font-size: 11px;
font-weight: 700;
letter-spacing: 0.04em;
text-transform: uppercase;
}

.chatGeneratedJsonBadge {
padding: 1px 6px;
border: 1px solid var(--geist-border);
border-radius: 4px;
background: var(--geist-surface);
color: var(--geist-secondary);
font-size: 10px;
font-weight: 500;
letter-spacing: 0;
}

.chatGeneratedJsonEditor .cm-editor {
height: auto;
max-height: 400px;
font-family: var(--geist-mono);
font-size: 13px;
background: var(--geist-code-bg);
color: var(--geist-code-fg);
}

.chatGeneratedJsonEditor .cm-scroller {
max-height: 400px;
overflow: auto;
}

.chatGeneratedJsonEditor .cm-gutters {
background: color-mix(in srgb, var(--geist-code-bg) 88%, black);
color: color-mix(in srgb, var(--geist-code-fg) 58%, white);
border-right: 1px solid
color-mix(in srgb, var(--geist-border) 82%, transparent);
}

.chatGeneratedJsonEditor .cm-activeLine,
.chatGeneratedJsonEditor .cm-activeLineGutter {
background: color-mix(in srgb, var(--geist-background) 12%, transparent);
}

.chatInputArea {
padding: 12px 20px;
border-top: 1px solid var(--geist-border);
Expand Down
77 changes: 44 additions & 33 deletions packages/genui/a2ui-playground/src/pages/AIChatPage.tsx
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Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
// Copyright 2026 The Lynx Authors. All rights reserved.
// Licensed under the Apache License Version 2.0 that can be found in the
// LICENSE file in the root directory of this source tree.
import { json } from '@codemirror/lang-json';
import CodeMirror from '@uiw/react-codemirror';
import { useCallback, useEffect, useMemo, useRef, useState } from 'react';

import './AIChatPage.css';

import { PanelResizeHandle } from '../components/PanelResizeHandle.js';
import { PreviewPanel } from '../components/PreviewPanel.js';
import { PreviewViewport } from '../components/PreviewViewport.js';
import { QrCode } from '../components/QrCode.js';
import { useResizablePanels } from '../hooks/useResizablePanels.js';
import { DEFAULT_A2UI_DEMO_URL } from '../utils/demoUrl.js';
import type { Protocol } from '../utils/protocol.js';
Expand Down Expand Up @@ -71,6 +72,7 @@ const RESIZE_BREAKPOINT = 980;
const ONLINE_A2UI_SERVER_ORIGIN = 'https://genui-server.vercel.app';
const ONLINE_A2UI_CHAT_URL = `${ONLINE_A2UI_SERVER_ORIGIN}/a2ui/stream`;
const LOCAL_A2UI_SERVER_PORT = '3060';
const jsonExtensions = [json()];

function isDevHost(hostname: string): boolean {
return (
Expand Down Expand Up @@ -338,6 +340,9 @@ export function AIChatPage(props: { protocol: Protocol }) {
const [inputValue, setInputValue] = useState<string>('');
const [renderUrl, setRenderUrl] = useState<string>('');
const [generatedJson, setGeneratedJson] = useState<string>('');
const [previewMessages, setPreviewMessages] = useState<unknown[] | null>(
null,
);
const [isGenerating, setIsGenerating] = useState<boolean>(false);
const messagesEndRef = useRef<HTMLDivElement>(null);
const previewFrameRef = useRef<HTMLIFrameElement | null>(null);
Expand Down Expand Up @@ -366,11 +371,22 @@ export function AIChatPage(props: { protocol: Protocol }) {
});

const baseUrl = useMemo(() => window.location.href.replace(/#.*$/, ''), []);
const previewSource = useMemo(() => {
if (!previewMessages) return undefined;
return {
kind: 'a2ui' as const,
protocol,
demoUrl: DEFAULT_A2UI_DEMO_URL,
theme: 'light' as const,
messages: previewMessages,
};
}, [previewMessages, protocol]);

const publishPreviewMessages = useCallback(
(nextMessages: unknown[]) => {
if (nextMessages.length === 0) return;
latestPreviewMessagesRef.current = nextMessages;
setPreviewMessages(nextMessages);

const initData = {
protocol,
Expand Down Expand Up @@ -425,6 +441,8 @@ export function AIChatPage(props: { protocol: Protocol }) {
]);
setInputValue('');
setGeneratedJson('');
setPreviewMessages(null);
latestPreviewMessagesRef.current = [];
setIsGenerating(true);
Comment thread
Sherry-hue marked this conversation as resolved.

void (async () => {
Expand Down Expand Up @@ -533,6 +551,30 @@ export function AIChatPage(props: { protocol: Protocol }) {
{msg.content}
</div>
))}
{generatedJson
? (
<div className='chatGeneratedJson'>
<div className='chatGeneratedJsonTitle'>
Generated Output
<span className='chatGeneratedJsonBadge'>JSON</span>
</div>
<CodeMirror
className='chatGeneratedJsonEditor'
value={generatedJson}
extensions={jsonExtensions}
theme='dark'
editable={false}
basicSetup={{
lineNumbers: true,
foldGutter: true,
bracketMatching: true,
closeBrackets: false,
autocompletion: false,
}}
/>
</div>
)
: null}
<div ref={messagesEndRef} />
</div>

Expand Down Expand Up @@ -569,38 +611,7 @@ export function AIChatPage(props: { protocol: Protocol }) {
style={previewPanelStyle}
title='Lynx Preview'
showPreviewModeSwitch
afterBody={
<>
{generatedJson
? (
<div className='chatGeneratedJson'>
<div className='chatGeneratedJsonTitle'>Generated JSON</div>
<pre>{generatedJson}</pre>
</div>
)
: null}

<div className='previewQrSection'>
<div className='previewQrContent'>
<div className='previewQrInfo'>
<div className='previewQrTitle'>View on Device</div>
<div className='previewQrDesc'>
Scan the QR code to preview on your mobile device.
</div>
</div>
{renderUrl
? <QrCode value={renderUrl} size={80} />
: (
<div className='previewQrPlaceholder'>
<span className='previewQrPlaceholderText'>
No render
</span>
</div>
)}
</div>
</div>
</>
}
previewSource={previewSource}
>
<PreviewViewport
src={renderUrl}
Expand Down
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