import 'package:flutter/material.dart';

class TemplateParser extends StatelessWidget {
  const TemplateParser({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Card(
      margin: EdgeInsets.zero, // 移除默认边距以填满整个区域
      color: Colors.grey[100],
      child: Column(
        children: [
          // 四个编辑框区域
          Expanded(
            child: GridView.builder(
              padding: const EdgeInsets.all(8.0),
              gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                crossAxisCount: 2,
                childAspectRatio: 1.0,
                crossAxisSpacing: 8.0,
                mainAxisSpacing: 8.0,
              ),
              itemCount: 4,
              itemBuilder: (context, index) {
                return _buildEditorPanel(context, index);
              },
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildEditorPanel(BuildContext context, int index) {
    // 定义每个面板的标题
    final titles = ['输入内容', '输出内容', '参考文件', '模板'];

    return Column(
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: [
        // 工具条
        Container(
          padding: const EdgeInsets.symmetric(horizontal: 8.0, vertical: 4.0),
          decoration: BoxDecoration(
            color: Colors.grey[100],
            borderRadius: const BorderRadius.vertical(top: Radius.circular(4.0)),
          ),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              // 左侧标题
              Text(
                titles[index],
                style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
              ),
              // 右侧工具按钮
              Row(
                mainAxisSize: MainAxisSize.min,
                children: [
                  IconButton(
                    icon: const Icon(Icons.folder_open, size: 18),
                    onPressed: () {},
                    padding: EdgeInsets.zero,
                    constraints: const BoxConstraints(),
                  ),
                  IconButton(
                    icon: const Icon(Icons.content_copy, size: 18),
                    onPressed: () {},
                    padding: EdgeInsets.zero,
                    constraints: const BoxConstraints(),
                  ),
                  IconButton(
                    icon: const Icon(Icons.save, size: 18),
                    onPressed: () {},
                    padding: EdgeInsets.zero,
                    constraints: const BoxConstraints(),
                  ),
                  IconButton(
                    icon: const Icon(Icons.close, size: 18),
                    onPressed: () {},
                    padding: EdgeInsets.zero,
                    constraints: const BoxConstraints(),
                  ),
                ],
              ),
            ],
          ),
        ),

        // 编辑框
        Expanded(
          child: Container(
            decoration: BoxDecoration(
              border: Border.all(color: Colors.grey),
              borderRadius: const BorderRadius.vertical(bottom: Radius.circular(4.0)),
            ),
            child: const TextField(
              maxLines: null,
              expands: true,
              decoration: InputDecoration(
                fillColor: Colors.white,
                filled: true,
                border: InputBorder.none,
                contentPadding: EdgeInsets.all(8.0),
                hintText: '输入内容...',
              ),
            ),
          ),
        ),
      ],
    );
  }
}