mirror of
https://github.com/catlog22/Claude-Code-Workflow.git
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Add end-to-end tests for workspace switching and backend tests for ask_question tool
- Implemented E2E tests for workspace switching functionality, covering scenarios such as switching workspaces, data isolation, language preference maintenance, and UI updates. - Added tests to ensure workspace data is cleared on logout and handles unsaved changes during workspace switches. - Created comprehensive backend tests for the ask_question tool, validating question creation, execution, answer handling, cancellation, and timeout scenarios. - Included edge case tests to ensure robustness against duplicate questions and invalid answers.
This commit is contained in:
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ccw/docs/a2ui-integration.md
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617
ccw/docs/a2ui-integration.md
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# A2UI Integration Guide for CCW Developers
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This guide explains how to integrate and extend the A2UI (AI-to-UI) system in the CCW application.
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## Table of Contents
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1. [Architecture Overview](#architecture-overview)
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2. [WebSocket Integration](#websocket-integration)
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3. [Notification System](#notification-system)
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4. [Creating Custom Components](#creating-custom-components)
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5. [Backend Tool Integration](#backend-tool-integration)
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6. [Testing](#testing)
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7. [Troubleshooting](#troubleshooting)
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## Architecture Overview
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```
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┌─────────────────────────────────────────────────────────────┐
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│ CCW Frontend │
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├─────────────────────────────────────────────────────────────┤
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│ │
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│ ┌────────────────┐ ┌─────────────────┐ │
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│ │ WebSocket │─────▶│ A2UI Parser │ │
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│ │ Handler │ │ (validation) │ │
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│ └────────────────┘ └────────┬────────┘ │
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│ │ │
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│ ▼ │
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│ ┌────────────────┐ ┌─────────────────┐ │
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│ │ Notification │◀─────│ A2UI Component │ │
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│ │ Store │ │ Registry │ │
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│ └────────────────┘ └────────┬────────┘ │
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│ │ │
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│ ▼ │
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│ ┌────────────────┐ ┌─────────────────┐ │
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│ │ UI Components │◀─────│ A2UI Renderer │ │
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│ │ (Dialogs, │ │ (React) │ │
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│ │ Panels) │ └─────────────────┘ │
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│ └────────────────┘ │
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│ │
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└─────────────────────────────────────────────────────────────┘
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│
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│ WebSocket
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▼
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┌─────────────────────────────────────────────────────────────┐
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│ CCW Backend │
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├─────────────────────────────────────────────────────────────┤
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│ ┌────────────────┐ ┌─────────────────┐ │
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│ │ MCP Tools │─────▶│ A2UI Types │ │
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│ │ (ask_question, │ │ (Zod schemas) │ │
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│ │ etc.) │ └─────────────────┘ │
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│ └────────────────┘ │
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└─────────────────────────────────────────────────────────────┘
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```
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## WebSocket Integration
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### Message Flow
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The A2UI system uses WebSocket messages for bidirectional communication:
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#### Frontend to Backend (Actions)
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```typescript
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// Send action via WebSocket
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const sendA2UIAction = (
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actionId: string,
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surfaceId: string,
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parameters: Record<string, unknown>
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) => {
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const event = new CustomEvent('a2ui-action', {
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detail: {
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type: 'a2ui-action',
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actionId,
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surfaceId,
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parameters,
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},
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});
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window.dispatchEvent(event);
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// WebSocket handler picks up this event
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};
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```
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#### Backend to Frontend (Surface Updates)
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```typescript
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// WebSocket message handler processes incoming messages
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interface A2UISurfaceMessage {
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type: 'a2ui-surface';
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surfaceId: string;
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title?: string;
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surface: SurfaceUpdate;
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}
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// In useWebSocket hook
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useEffect(() => {
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ws.addEventListener('message', (event) => {
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const message = JSON.parse(event.data);
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if (message.type === 'a2ui-surface') {
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// Add to notification store
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addA2UINotification(message.surface, message.title);
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}
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});
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}, [ws]);
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```
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## Notification System
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### A2UI Notifications
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A2UI surfaces appear as notifications in the notification panel:
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```typescript
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// Add A2UI notification
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import { useNotificationStore } from '@/stores/notificationStore';
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const { addA2UINotification } = useNotificationStore();
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addA2UINotification(surfaceUpdate, 'Notification Title');
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```
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### State Management
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A2UI state is managed through the notification store:
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```typescript
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// Update A2UI state
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updateA2UIState(surfaceId, {
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counter: 5,
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userInput: 'value',
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});
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```
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### Ask Question Dialog
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The `ask_question` tool uses a dedicated dialog:
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```typescript
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// Set current question (triggered by WebSocket)
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setCurrentQuestion({
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surfaceId: 'question-123',
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title: 'Confirmation Required',
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questions: [
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{
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id: 'q1',
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type: 'confirm',
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question: 'Do you want to continue?',
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required: true,
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},
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],
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});
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// Dialog renders automatically
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// {currentQuestion && <AskQuestionDialog payload={currentQuestion} />}
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```
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## Creating Custom Components
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### Step 1: Create Component Renderer
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Create file: `src/packages/a2ui-runtime/renderer/components/A2UICustom.tsx`
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```typescript
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import React, { useState, useCallback } from 'react';
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import type { ComponentRenderer } from '../../core/A2UIComponentRegistry';
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import { resolveTextContent } from '../A2UIRenderer';
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// Define component config interface (for TypeScript)
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interface CustomComponentConfig {
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title: { literalString: string } | { path: string };
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dataSource: { literalString: string } | { path: string };
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onRefresh: { actionId: string; parameters?: Record<string, unknown> };
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}
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export const A2UICustom: ComponentRenderer = ({
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component,
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state,
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onAction,
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resolveBinding
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}) => {
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const customComp = component as { Custom: CustomComponentConfig };
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const { Custom: config } = customComp;
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// Resolve title (literal or binding)
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const title = resolveTextContent(config.title, resolveBinding);
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// Resolve data source
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const dataSource = resolveTextContent(config.dataSource, resolveBinding);
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// Local state
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const [isLoading, setIsLoading] = useState(false);
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// Handle refresh action
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const handleRefresh = useCallback(() => {
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setIsLoading(true);
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onAction(config.onRefresh.actionId, {
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...config.onRefresh.parameters,
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dataSource,
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});
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// Reset loading after action (implementation dependent)
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setTimeout(() => setIsLoading(false), 1000);
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}, [onAction, config.onRefresh, dataSource]);
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return (
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<div className="a2ui-custom p-4 border rounded-md">
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<h3 className="text-lg font-semibold mb-2">{title}</h3>
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<div className="text-sm">
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Data source: {dataSource}
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</div>
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<button
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onClick={handleRefresh}
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disabled={isLoading}
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className="mt-2 px-3 py-1 bg-primary text-primary-foreground rounded"
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>
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{isLoading ? 'Loading...' : 'Refresh'}
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</button>
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</div>
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);
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};
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```
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### Step 2: Register Component
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Update: `src/packages/a2ui-runtime/renderer/components/registry.ts`
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```typescript
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import { A2UICustom } from './A2UICustom';
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export function registerBuiltInComponents(): void {
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// ... existing registrations
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// Register custom component
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a2uiRegistry.register('Custom', A2UICustom);
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}
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```
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### Step 3: Export Component
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Update: `src/packages/a2ui-runtime/renderer/components/index.ts`
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```typescript
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export * from './A2UICustom';
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```
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### Step 4: Add Type Definition (Optional)
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Update: `src/packages/a2ui-runtime/core/A2UITypes.ts`
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```typescript
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// Add schema
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export const CustomComponentSchema = z.object({
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Custom: z.object({
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title: TextContentSchema,
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dataSource: TextContentSchema,
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onRefresh: ActionSchema,
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description: z.string().optional(),
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}),
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});
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// Add to ComponentSchema union
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export const ComponentSchema: z.ZodType<
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| z.infer<typeof TextComponentSchema>
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| z.infer<typeof ButtonComponentSchema>
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// ... other components
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| z.infer<typeof CustomComponentSchema>
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> = z.union([
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// ... existing schemas
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CustomComponentSchema,
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]);
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// Add to TypeScript type
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export type CustomComponent = z.infer<typeof CustomComponentSchema>;
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export type A2UIComponent = z.infer<typeof ComponentSchema>;
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// Add to discriminated union
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export type A2UIComponentType =
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| 'Text' | 'Button' | // ... existing types
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| 'Custom';
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```
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## Backend Tool Integration
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### Creating an A2UI Tool
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Create file: `src/tools/my-a2ui-tool.ts`
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```typescript
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import { z } from 'zod';
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import type { ToolSchema, ToolResult } from '../types/tool.js';
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import type { SurfaceUpdate } from '../core/a2ui/A2UITypes.js';
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// Generate A2UI surface for your tool
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function generateSurface(params: MyToolParams): {
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surfaceUpdate: SurfaceUpdate;
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} {
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const components: unknown[] = [
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{
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id: 'title',
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component: {
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Text: {
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text: { literalString: params.title || 'My Tool' },
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usageHint: 'h3',
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},
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},
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},
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// Add more components...
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];
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return {
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surfaceUpdate: {
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surfaceId: `my-tool-${Date.now()}`,
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components,
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initialState: {
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toolName: 'my-tool',
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timestamp: Date.now(),
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},
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},
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};
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}
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// Execute tool
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export async function execute(params: MyToolParams): Promise<ToolResult> {
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try {
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// Generate surface
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const { surfaceUpdate } = generateSurface(params);
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// TODO: Send surface via WebSocket to frontend
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// For now, return surface in result
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return {
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success: true,
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result: {
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surfaceId: surfaceUpdate.surfaceId,
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surface: surfaceUpdate,
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},
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};
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} catch (error) {
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return {
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success: false,
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error: error instanceof Error ? error.message : String(error),
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};
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}
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}
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// Tool schema
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export const schema: ToolSchema = {
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name: 'my_a2ui_tool',
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description: 'Description of what your tool does',
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inputSchema: {
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type: 'object',
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properties: {
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title: { type: 'string', description: 'Title for the A2UI surface' },
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// Add more properties...
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},
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required: ['title'],
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},
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};
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```
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### Handling Actions from Frontend
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Create handler in backend:
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```typescript
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// In WebSocket handler or tool manager
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function handleA2UIAction(
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actionId: string,
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surfaceId: string,
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parameters: Record<string, unknown>
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): void {
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// Find pending question or surface
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const pending = pendingSurfaces.get(surfaceId);
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if (!pending) {
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console.warn(`No surface found for ID: ${surfaceId}`);
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return;
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}
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// Process action based on actionId
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switch (actionId) {
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case 'confirm':
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// Handle confirmation
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pending.resolve({
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success: true,
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surfaceId,
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cancelled: false,
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answers: [parameters],
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timestamp: new Date().toISOString(),
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});
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break;
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case 'cancel':
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// Handle cancellation
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pending.resolve({
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success: false,
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surfaceId,
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cancelled: true,
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answers: [],
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timestamp: new Date().toISOString(),
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error: 'User cancelled',
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});
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break;
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default:
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// Handle custom actions
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console.log(`Action ${actionId} with params:`, parameters);
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}
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// Clean up
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pendingSurfaces.delete(surfaceId);
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}
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```
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## Testing
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### Unit Tests
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Test component renderers:
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```typescript
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// src/packages/a2ui-runtime/__tests__/components/A2UICustom.test.tsx
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import { describe, it, expect } from 'vitest';
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import { render, screen } from '@testing-library/react';
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import { A2UICustom } from '../A2UICustom';
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import type { A2UIComponent } from '@/packages/a2ui-runtime/core/A2UITypes';
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describe('A2UICustom', () => {
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it('should render with title', () => {
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const component: A2UIComponent = {
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Custom: {
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title: { literalString: 'Test Title' },
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dataSource: { literalString: 'test-source' },
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onRefresh: { actionId: 'refresh' },
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},
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};
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const props = {
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component,
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state: {},
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onAction: vi.fn(),
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resolveBinding: vi.fn(),
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};
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render(<A2UICustom {...props} />);
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expect(screen.getByText('Test Title')).toBeInTheDocument();
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});
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});
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```
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### E2E Tests
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Test A2UI flow in browser:
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```typescript
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// tests/e2e/my-a2ui-tool.spec.ts
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import { test, expect } from '@playwright/test';
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test('My A2UI Tool E2E', async ({ page }) => {
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await page.goto('/', { waitUntil: 'networkidle' });
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// Simulate WebSocket message
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await page.evaluate(() => {
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const event = new CustomEvent('ws-message', {
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detail: {
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type: 'a2ui-surface',
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surfaceId: 'test-custom',
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title: 'Custom Tool',
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surface: {
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surfaceId: 'test-custom',
|
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components: [
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{
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||||
id: 'custom',
|
||||
component: {
|
||||
Custom: {
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||||
title: { literalString: 'Test Custom' },
|
||||
dataSource: { literalString: 'data' },
|
||||
onRefresh: { actionId: 'refresh' },
|
||||
},
|
||||
},
|
||||
},
|
||||
],
|
||||
initialState: {},
|
||||
},
|
||||
},
|
||||
});
|
||||
window.dispatchEvent(event);
|
||||
});
|
||||
|
||||
// Verify rendering
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||||
await expect(page.getByText('Test Custom')).toBeVisible();
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||||
await expect(page.getByText('Data source: data')).toBeVisible();
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||||
});
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||||
```
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||||
|
||||
## Troubleshooting
|
||||
|
||||
### Common Issues
|
||||
|
||||
#### 1. Component Not Rendering
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||||
|
||||
**Symptoms**: A2UI surface received but component not visible
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||||
|
||||
**Solutions**:
|
||||
- Verify component is registered in registry
|
||||
- Check console for warnings about unknown component types
|
||||
- Ensure component returns valid JSX
|
||||
|
||||
```typescript
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// Debug: Check if registered
|
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console.log(a2uiRegistry.getRegisteredTypes());
|
||||
// Should include your component type
|
||||
```
|
||||
|
||||
#### 2. State Not Updating
|
||||
|
||||
**Symptoms**: State changes not reflected in UI
|
||||
|
||||
**Solutions**:
|
||||
- Verify binding path matches state key
|
||||
- Check `resolveBinding` implementation
|
||||
- Ensure `updateA2UIState` is called with correct surfaceId
|
||||
|
||||
```typescript
|
||||
// Debug: Log state changes
|
||||
const handleAction = (actionId: string, params: any) => {
|
||||
console.log('Action:', actionId, 'Params:', params);
|
||||
onAction(actionId, params);
|
||||
};
|
||||
```
|
||||
|
||||
#### 3. Actions Not Being Sent
|
||||
|
||||
**Symptoms**: Clicking buttons doesn't trigger backend action
|
||||
|
||||
**Solutions**:
|
||||
- Check WebSocket connection status
|
||||
- Verify action event listener is attached
|
||||
- Ensure actionId matches backend handler
|
||||
|
||||
```typescript
|
||||
// Debug: Monitor a2ui-action events
|
||||
window.addEventListener('a2ui-action', (e) => {
|
||||
console.log('A2UI Action:', (e as CustomEvent).detail);
|
||||
});
|
||||
```
|
||||
|
||||
#### 4. Parse Errors
|
||||
|
||||
**Symptoms**: Surface updates fail validation
|
||||
|
||||
**Solutions**:
|
||||
- Validate JSON structure against A2UI spec
|
||||
- Check Zod error details
|
||||
- Use `safeParse` for debugging
|
||||
|
||||
```typescript
|
||||
// Debug: Safe parse with details
|
||||
const result = a2uiParser.safeParse(jsonString);
|
||||
if (!result.success) {
|
||||
console.error('Parse error:', result.error);
|
||||
// Get detailed Zod errors
|
||||
}
|
||||
```
|
||||
|
||||
### Development Tools
|
||||
|
||||
#### React DevTools
|
||||
|
||||
Inspect A2UI component hierarchy:
|
||||
|
||||
```typescript
|
||||
// Add data attributes for debugging
|
||||
<div data-a2ui-component="Custom" data-surface-id={surfaceId}>
|
||||
{/* component content */}
|
||||
</div>
|
||||
```
|
||||
|
||||
#### Logging
|
||||
|
||||
Enable verbose logging in development:
|
||||
|
||||
```typescript
|
||||
// In development mode
|
||||
if (process.env.NODE_ENV === 'development') {
|
||||
console.log('[A2UI] Rendering component:', componentType);
|
||||
console.log('[A2UI] Surface:', surface);
|
||||
console.log('[A2UI] State:', state);
|
||||
}
|
||||
```
|
||||
|
||||
### Performance Considerations
|
||||
|
||||
1. **Lazy Load Components**: For complex custom components, use React.lazy
|
||||
|
||||
2. **Debounce Actions**: Prevent rapid action firing
|
||||
|
||||
```typescript
|
||||
import { debounce } from 'lodash-es';
|
||||
|
||||
const debouncedAction = debounce(onAction, 300);
|
||||
```
|
||||
|
||||
3. **Memoize Renders**: Use React.memo for expensive components
|
||||
|
||||
```typescript
|
||||
export const A2UICustom = React.memo<ComponentRenderer>(({ /* ... */ }) => {
|
||||
// component implementation
|
||||
});
|
||||
```
|
||||
|
||||
## Additional Resources
|
||||
|
||||
- [A2UI Runtime README](./a2ui-runtime/README.md)
|
||||
- [A2UI Protocol Usage](./a2ui-integration.md#protocol-usage)
|
||||
- [Component Examples](./a2ui-integration.md#examples)
|
||||
|
||||
For questions or issues, please refer to the main CCW documentation.
|
||||
Reference in New Issue
Block a user