如何修改/优化Visual Studio Code调试器UI并自定义线程信息展示窗口？

Got it, let's break down how you can build that custom window to display threads and debugging info in VS Code.

First, let's anchor on the key VS Code debugging architecture detail you found:

Debug Adapter# VS Code实现了通用调试器UI，依赖调试器扩展及所谓的‘调试适配器’将调试UI与实际调试器或运行时相连。调试适配器是通过VS Code Debug Protocol与VS Code通信的专用进程，可被实现……

With that foundation, here's how to build your custom view:

• Tap into debug adapter data streams
  The debug adapter sends events via the VS Code Debug Protocol that include all the debugging data you need—thread lists, their states, call stacks, variable values, etc. In your extension, you'll listen for active debug sessions and hook into these events:

  • Use vscode.debug.onDidChangeActiveDebugSession to detect when a debug session starts/stops
  • Listen to session.onDidReceiveDebugProtocolEvent to catch real-time updates like thread state changes
  • Use session.customRequest() to fetch specific data (like the full thread list) on demand

• Build your custom UI with Webview
  VS Code's Webview API is the go-to for fully customized windows. It lets you use HTML/CSS/JS to design exactly how you want to display threads and debug info:

  1. Register a command to trigger opening your Webview panel
  2. Render thread data with custom styling (e.g., color-code running/paused/terminated threads, use tree views for nested thread groups)
  3. Set up communication between the Webview and your extension's main process—so when a user clicks a thread in your custom window, you can tell the debug adapter to switch to that thread's call stack

• Sync with debug session lifecycle
  Make sure your custom window stays in lockstep with the debug process:

  • Auto-load thread data when a debug session starts
  • Update the UI in real-time when threads pause, resume, or terminate
  • Clean up resources or hide the window when the debug session ends

• Quick code snippet to get started
  Here's a minimal example of setting up a Webview thread view:

  import * as vscode from 'vscode';
  
  export function activate(context: vscode.ExtensionContext) {
    const showCustomThreadView = vscode.commands.registerCommand('debug-custom-view.showThreads', () => {
      const panel = vscode.window.createWebviewPanel(
        'customThreadView',
        'Custom Thread Monitor',
        vscode.ViewColumn.Beside,
        { enableScripts: true }
      );
  
      // Initial Webview HTML
      panel.webview.html = getWebviewContent();
  
      // Fetch and send thread data when a debug session activates
      vscode.debug.onDidChangeActiveDebugSession(session => {
        session.customRequest('threads').then(res => {
          panel.webview.postMessage({ type: 'updateThreads', threads: res.threads });
        });
      });
  
      // Handle user interactions from the Webview
      panel.webview.onDidReceiveMessage(msg => {
        const activeSession = vscode.debug.activeDebugSession;
        if (msg.type === 'selectThread' && activeSession) {
          activeSession.customRequest('stackTrace', { threadId: msg.threadId });
        }
      });
    });
  
    context.subscriptions.push(showCustomThreadView);
  }
  
  function getWebviewContent() {
    return `
    <!DOCTYPE html>
    <html lang="zh-CN">
    <head>
      <meta charset="UTF-8">
      <title>Custom Thread Monitor</title>
      <style>
        .thread { padding: 8px; margin: 4px 0; border-radius: 4px; cursor: pointer; }
        .running { background: #e6f7ff; }
        .paused { background: #fff7e6; }
        .terminated { background: #fff1f0; }
      </style>
    </head>
    <body>
      <h3>Thread List</h3>
      <div id="threadContainer"></div>
      <script>
        const vscode = acquireVsCodeApi();
        window.addEventListener('message', e => {
          if (e.data.type === 'updateThreads') {
            const container = document.getElementById('threadContainer');
            container.innerHTML = '';
            e.data.threads.forEach(thread => {
              const div = document.createElement('div');
              div.className = \`thread \${thread.state}\`;
              div.textContent = \`[\${thread.id}] \${thread.name} - \${thread.state}\`;
              div.onclick = () => vscode.postMessage({ type: 'selectThread', threadId: thread.id });
              container.appendChild(div);
            });
          }
        });
      </script>
    </body>
    </html>
    `;
  }
  

• Key considerations

  • Ensure your debug adapter supports the protocol requests you need (like threads or stackTrace)—if you're building your own adapter, implement these handlers
  • Add content security policies to your Webview for production use
  • For large thread lists, add virtual scrolling or pagination to keep the UI responsive

内容的提问来源于stack exchange，提问作者tarun bansal