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										 |  |  |  | import 'package:flutter/material.dart'; | 
					
						
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							|  |  |  |  | /// 自定义默认按钮(支持不可点击/禁用状态和防连点功能)
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							|  |  |  |  | class CustomButton extends StatefulWidget { | 
					
						
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										 |  |  |  |   final String text; // 按钮文字
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							|  |  |  |  |   final Color backgroundColor; // 按钮背景色
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							|  |  |  |  |   final double borderRadius; // 圆角半径(默认5)
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							|  |  |  |  |   final VoidCallback? onPressed; // 点击事件回调
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							|  |  |  |  |   final EdgeInsetsGeometry? padding; // 内边距
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							|  |  |  |  |   final EdgeInsetsGeometry? margin; // 外边距
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							|  |  |  |  |   final double? height; // 按钮高度
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							|  |  |  |  |   final TextStyle? textStyle; // 文字样式
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										 |  |  |  |   /// 新增:是否可点击(true 可点,false 禁用)
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							|  |  |  |  |   /// 注意:如果 onPressed 为 null,也会被视为不可点击
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							|  |  |  |  |   final bool enabled; | 
					
						
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							|  |  |  |  |   /// 新增:禁用时的背景色(可选)
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							|  |  |  |  |   final Color? disabledBackgroundColor; | 
					
						
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							|  |  |  |  |   /// 新增:禁用时的文字颜色(可选)
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							|  |  |  |  |   final Color? disabledTextColor; | 
					
						
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										 |  |  |  |   /// 新增:防连点间隔时间(毫秒)
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							|  |  |  |  |   final int debounceInterval; | 
					
						
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										 |  |  |  |   const CustomButton({ | 
					
						
							|  |  |  |  |     super.key, | 
					
						
							|  |  |  |  |     required this.text, | 
					
						
							|  |  |  |  |     required this.backgroundColor, | 
					
						
							|  |  |  |  |     this.borderRadius = 5.0, | 
					
						
							|  |  |  |  |     this.onPressed, | 
					
						
							|  |  |  |  |     this.padding, | 
					
						
							|  |  |  |  |     this.margin, | 
					
						
							|  |  |  |  |     this.height, | 
					
						
							|  |  |  |  |     this.textStyle, | 
					
						
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										 |  |  |  |     this.enabled = true, | 
					
						
							|  |  |  |  |     this.disabledBackgroundColor, | 
					
						
							|  |  |  |  |     this.disabledTextColor, | 
					
						
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										 |  |  |  |     this.debounceInterval = 1000, // 默认1秒防连点
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										 |  |  |  |   }); | 
					
						
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										 |  |  |  |   @override | 
					
						
							|  |  |  |  |   State<CustomButton> createState() => _CustomButtonState(); | 
					
						
							|  |  |  |  | } | 
					
						
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							|  |  |  |  | class _CustomButtonState extends State<CustomButton> { | 
					
						
							|  |  |  |  |   // 记录最后一次点击时间
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							|  |  |  |  |   DateTime _lastClickTime = DateTime(0); | 
					
						
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										 |  |  |  |   @override | 
					
						
							|  |  |  |  |   Widget build(BuildContext context) { | 
					
						
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										 |  |  |  |     // 如果 enabled 为 false 或 onPressed 为 null,则视为不可点击
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										 |  |  |  |     final bool isEnabled = widget.enabled && widget.onPressed != null; | 
					
						
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							|  |  |  |  |     // 计算展示用背景色与文字样式
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							|  |  |  |  |     final Color bgColor = isEnabled | 
					
						
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										 |  |  |  |         ? widget.backgroundColor | 
					
						
							|  |  |  |  |         : (widget.disabledBackgroundColor ?? Colors.grey.shade400); | 
					
						
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							|  |  |  |  |     TextStyle finalTextStyle; | 
					
						
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										 |  |  |  |     if (widget.textStyle != null) { | 
					
						
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										 |  |  |  |       finalTextStyle = isEnabled | 
					
						
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										 |  |  |  |           ? widget.textStyle! | 
					
						
							|  |  |  |  |           : widget.textStyle!.copyWith( | 
					
						
							|  |  |  |  |         color: widget.disabledTextColor ?? widget.textStyle!.color?.withOpacity(0.8) ?? Colors.white70, | 
					
						
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										 |  |  |  |       ); | 
					
						
							|  |  |  |  |     } else { | 
					
						
							|  |  |  |  |       finalTextStyle = TextStyle( | 
					
						
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										 |  |  |  |         color: isEnabled ? Colors.white : (widget.disabledTextColor ?? Colors.white70), | 
					
						
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										 |  |  |  |         fontSize: 14, | 
					
						
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										 |  |  |  |         fontWeight: FontWeight.bold, | 
					
						
							|  |  |  |  |       ); | 
					
						
							|  |  |  |  |     } | 
					
						
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										 |  |  |  |     // 处理点击事件(添加防连点逻辑)
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							|  |  |  |  |     void handleOnPressed() { | 
					
						
							|  |  |  |  |       final now = DateTime.now(); | 
					
						
							|  |  |  |  |       if (now.difference(_lastClickTime).inMilliseconds < widget.debounceInterval) { | 
					
						
							|  |  |  |  |         // 在防连点间隔内,不执行操作
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							|  |  |  |  |         return; | 
					
						
							|  |  |  |  |       } | 
					
						
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							|  |  |  |  |       _lastClickTime = now; | 
					
						
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							|  |  |  |  |       if (widget.onPressed != null) { | 
					
						
							|  |  |  |  |         widget.onPressed!(); | 
					
						
							|  |  |  |  |       } | 
					
						
							|  |  |  |  |     } | 
					
						
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										 |  |  |  |     // 点击拦截器 + 视觉反馈(禁用时降低不透明度)
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							|  |  |  |  |     return Opacity( | 
					
						
							|  |  |  |  |       opacity: isEnabled ? 1.0 : 0.65, | 
					
						
							|  |  |  |  |       child: AbsorbPointer( | 
					
						
							|  |  |  |  |         absorbing: !isEnabled, | 
					
						
							|  |  |  |  |         child: GestureDetector( | 
					
						
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										 |  |  |  |           onTap: isEnabled ? handleOnPressed : null, | 
					
						
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										 |  |  |  |           child: Container( | 
					
						
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										 |  |  |  |             height: widget.height ?? 45, // 默认高度45
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							|  |  |  |  |             padding: widget.padding ?? const EdgeInsets.all(6), // 默认内边距
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							|  |  |  |  |             margin: widget.margin ?? const EdgeInsets.symmetric(horizontal: 5), // 默认外边距
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										 |  |  |  |             decoration: BoxDecoration( | 
					
						
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										 |  |  |  |               borderRadius: BorderRadius.circular(widget.borderRadius), | 
					
						
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										 |  |  |  |               color: bgColor, | 
					
						
							|  |  |  |  |             ), | 
					
						
							|  |  |  |  |             child: Center( | 
					
						
							|  |  |  |  |               child: Text( | 
					
						
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										 |  |  |  |                 widget.text, | 
					
						
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										 |  |  |  |                 style: finalTextStyle, | 
					
						
							|  |  |  |  |               ), | 
					
						
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										 |  |  |  |             ), | 
					
						
							|  |  |  |  |           ), | 
					
						
							|  |  |  |  |         ), | 
					
						
							|  |  |  |  |       ), | 
					
						
							|  |  |  |  |     ); | 
					
						
							|  |  |  |  |   } | 
					
						
							|  |  |  |  | } |