feat: subagent feature wip

packages/cli/src/ui/hooks/useLaunchEditor.ts

@@ -0,0 +1,82 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { useCallback } from 'react';
+import { useStdin } from 'ink';
+import { EditorType } from '@qwen-code/qwen-code-core';
+import { spawnSync } from 'child_process';
+import { useSettings } from '../contexts/SettingsContext.js';
+
+/**
+ * Determines the editor command to use based on user preferences and platform.
+ */
+function getEditorCommand(preferredEditor?: EditorType): string {
+  if (preferredEditor) {
+    return preferredEditor;
+  }
+
+  // Platform-specific defaults with UI preference for macOS
+  switch (process.platform) {
+    case 'darwin':
+      return 'open -t'; // TextEdit in plain text mode
+    case 'win32':
+      return 'notepad';
+    default:
+      return process.env['VISUAL'] || process.env['EDITOR'] || 'vi';
+  }
+}
+
+/**
+ * React hook that provides an editor launcher function.
+ * Uses settings context and stdin management internally.
+ */
+export function useLaunchEditor() {
+  const settings = useSettings();
+  const { stdin, setRawMode } = useStdin();
+
+  const launchEditor = useCallback(
+    async (filePath: string): Promise<void> => {
+      const preferredEditor = settings.merged.preferredEditor as
+        | EditorType
+        | undefined;
+      const editor = getEditorCommand(preferredEditor);
+
+      // Handle different editor command formats
+      let editorCommand: string;
+      let editorArgs: string[];
+
+      if (editor === 'open -t') {
+        // macOS TextEdit in plain text mode
+        editorCommand = 'open';
+        editorArgs = ['-t', filePath];
+      } else {
+        // Standard editor command
+        editorCommand = editor;
+        editorArgs = [filePath];
+      }
+
+      // Temporarily disable raw mode for editor
+      const wasRaw = stdin?.isRaw ?? false;
+      try {
+        setRawMode?.(false);
+
+        const { status, error } = spawnSync(editorCommand, editorArgs, {
+          stdio: 'inherit',
+        });
+
+        if (error) throw error;
+        if (typeof status === 'number' && status !== 0) {
+          throw new Error(`Editor exited with status ${status}`);
+        }
+      } finally {
+        if (wasRaw) setRawMode?.(true);
+      }
+    },
+    [settings.merged.preferredEditor, setRawMode, stdin],
+  );
+
+  return launchEditor;
+}