manta/win_text_editor/lib/app/widgets/text_tab.dart

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:flutter/services.dart'; // 复制功能需要
import 'package:win_text_editor/app/providers/editor_provider.dart';

class TextTab extends StatelessWidget {
  final String tabId;

  const TextTab({super.key, required this.tabId});

  @override
  Widget build(BuildContext context) {
    final provider = Provider.of<EditorProvider>(context);
    final tab = provider.tabs.firstWhere((t) => t.id == tabId);

    return Column(
      children: [
        // 新增工具条
        Container(
          height: 40,
          padding: const EdgeInsets.symmetric(horizontal: 16),
          decoration: BoxDecoration(
            color: Colors.grey[100],
            border: Border(bottom: BorderSide(color: Colors.grey[300]!)),
          ),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              const Text('源文本', style: TextStyle(fontWeight: FontWeight.bold)),
              Row(
                children: [
                  IconButton(
                    icon: const Icon(Icons.folder_open, size: 20),
                    tooltip: '打开文件',
                    onPressed: () => _openFile(context, tabId),
                  ),
                  IconButton(
                    icon: const Icon(Icons.content_copy, size: 20),
                    tooltip: '复制内容',
                    onPressed: () => _copyToClipboard(context, tab.content),
                  ),
                  IconButton(
                    icon: const Icon(Icons.save, size: 20),
                    tooltip: '保存文件',
                    onPressed: () => _saveFile(context, tab.content),
                  ),
                ],
              ),
            ],
          ),
        ),
        // 文本编辑区
        Expanded(
          child: TextField(
            maxLines: null,
            controller: TextEditingController(text: tab.content),
            onChanged: (text) => provider.updateContent(tabId, text),
            decoration: const InputDecoration(
              border: InputBorder.none,
              hintText: '开始输入内容...',
              contentPadding: EdgeInsets.all(16),
            ),
          ),
        ),
      ],
    );
  }

  // 打开文件模拟功能
  Future<void> _openFile(BuildContext context, String tabId) async {
    final provider = Provider.of<EditorProvider>(context, listen: false);
    // 这里是模拟代码，实际应该使用文件选择器
    const mockContent = "从文件加载的示例文本...";
    provider.updateContent(tabId, mockContent);

    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('已加载文件内容')));
  }

  // 复制到剪贴板
  Future<void> _copyToClipboard(BuildContext context, String content) async {
    await Clipboard.setData(ClipboardData(text: content));
    if (context.mounted) {
      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('已复制到剪贴板')));
    }
  }

  // 保存文件模拟功能
  Future<void> _saveFile(BuildContext context, String content) async {
    // 这里是模拟代码，实际应该使用文件保存对话框
    if (context.mounted) {
      ScaffoldMessenger.of(
        context,
      ).showSnackBar(SnackBar(content: Text('已保存 ${content.length} 个字符')));
    }
  }
}