299 lines
8.5 KiB
Dart
299 lines
8.5 KiB
Dart
// custom_alert_dialog.dart
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import 'package:flutter/material.dart';
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import 'package:qhd_prevention/main.dart'; // 导入全局 navigatorKey
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/// 对话框模式
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enum DialogMode { text, input }
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class CustomAlertDialog extends StatefulWidget {
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final String title;
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final String content;
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final String hintText;
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final String cancelText;
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final String confirmText;
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final VoidCallback? onCancel;
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final VoidCallback? onConfirm;
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final ValueChanged<String>? onInputConfirm;
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final DialogMode mode;
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final bool force;
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const CustomAlertDialog({
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Key? key,
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required this.title,
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this.content = '',
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this.hintText = '',
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this.cancelText = '取消',
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this.confirmText = '确定',
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this.onCancel,
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this.onConfirm,
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this.onInputConfirm,
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this.mode = DialogMode.text,
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this.force = false,
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}) : super(key: key);
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// ------------------ 静态快捷方法 ------------------
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static Future<bool> showConfirm(
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BuildContext context, {
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required String title,
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String content = '',
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String cancelText = '取消',
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String confirmText = '确定',
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bool barrierDismissible = true,
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VoidCallback? onConfirm,
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bool force = false,
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}) async {
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final result = await showDialog<bool>(
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context: context,
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barrierDismissible: force ? false : barrierDismissible,
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builder: (_) => CustomAlertDialog(
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title: title,
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content: content,
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cancelText: cancelText,
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confirmText: confirmText,
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onConfirm: onConfirm,
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force: force,
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),
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);
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return result == true;
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}
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static Future<void> showAlert(
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BuildContext context, {
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required String title,
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String content = '',
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String confirmText = '确定',
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bool barrierDismissible = true,
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VoidCallback? onConfirm,
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bool force = false,
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}) async {
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await showDialog<void>(
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context: context,
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barrierDismissible: force ? false : barrierDismissible,
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builder: (_) => CustomAlertDialog(
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title: title,
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content: content,
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cancelText: '',
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confirmText: confirmText,
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onConfirm: onConfirm,
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force: force,
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),
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);
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}
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static Future<String?> showInput(
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BuildContext context, {
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required String title,
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String hintText = '',
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String cancelText = '取消',
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String confirmText = '确定',
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bool barrierDismissible = true,
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bool force = false,
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}) async {
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final result = await showDialog<String?>(
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context: context,
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barrierDismissible: force ? false : barrierDismissible,
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builder: (_) => CustomAlertDialog(
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title: title,
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hintText: hintText,
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cancelText: cancelText,
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confirmText: confirmText,
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mode: DialogMode.input,
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force: force,
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),
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);
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// 取消/点遮罩会得到 null；确认会得到 String（可能为空串）
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return result;
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}
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@override
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_CustomAlertDialogState createState() => _CustomAlertDialogState();
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}
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class _CustomAlertDialogState extends State<CustomAlertDialog> {
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late TextEditingController _controller;
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bool _isClosing = false;
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@override
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void initState() {
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super.initState();
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_controller = TextEditingController();
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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bool get hasCancel => !widget.force && widget.cancelText.isNotEmpty;
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void _closeDialog([dynamic result]) {
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if (_isClosing) return;
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_isClosing = true;
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// 优先使用当前上下文导航
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if (mounted) {
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Navigator.of(context).pop(result);
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} else {
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// 后备方案：使用全局导航键
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navigatorKey.currentState?.pop(result);
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}
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}
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@override
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Widget build(BuildContext context) {
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return PopScope(
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canPop: !widget.force,
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child: Dialog(
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backgroundColor: Colors.transparent,
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child: Container(
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constraints: const BoxConstraints(minWidth: 280),
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(8),
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),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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const SizedBox(height: 20),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 20),
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child: Text(
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widget.title,
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style: const TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.bold,
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),
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textAlign: TextAlign.center,
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),
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),
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const SizedBox(height: 16),
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if (widget.mode == DialogMode.text)
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 24),
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child: Text(
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widget.content,
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style: const TextStyle(
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fontSize: 16,
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color: Colors.black54,
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),
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textAlign: TextAlign.center,
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),
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)
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else
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 20),
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child: TextField(
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controller: _controller,
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autofocus: true,
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decoration: InputDecoration(
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hintText: widget.hintText,
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border: const OutlineInputBorder(),
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focusedBorder: OutlineInputBorder(
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borderSide: BorderSide(color: Colors.blue, width: 1),
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borderRadius: BorderRadius.circular(4),
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),
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isDense: true,
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contentPadding: const EdgeInsets.symmetric(
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vertical: 10,
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horizontal: 10,
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),
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),
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),
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),
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const SizedBox(height: 20),
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const Divider(height: 1),
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hasCancel
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? _buildDoubleButtons(context)
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: _buildSingleButton(context),
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],
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),
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),
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),
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);
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}
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Widget _buildDoubleButtons(BuildContext context) {
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return Row(
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children: [
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Expanded(
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child: InkWell(
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onTap: () {
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widget.onCancel?.call();
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_closeDialog(widget.mode == DialogMode.text ? false : null);
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},
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child: Container(
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padding: const EdgeInsets.symmetric(vertical: 12),
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alignment: Alignment.center,
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child: Text(
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widget.cancelText,
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style: const TextStyle(
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fontWeight: FontWeight.w500,
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color: Colors.black87,
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fontSize: 18,
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),
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),
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),
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),
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),
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Container(width: 1, height: 48, color: Colors.grey[300]),
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Expanded(
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child: InkWell(
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onTap: () {
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if (widget.mode == DialogMode.text) {
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widget.onConfirm?.call();
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_closeDialog(true);
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} else {
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final value = _controller.text.trim();
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widget.onInputConfirm?.call(value);
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_closeDialog(value);
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}
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},
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child: Container(
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padding: const EdgeInsets.symmetric(vertical: 12),
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alignment: Alignment.center,
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child: Text(
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widget.confirmText,
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style: const TextStyle(
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color: Color(0xFF3874F6),
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fontWeight: FontWeight.w500,
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fontSize: 18,
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),
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),
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),
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),
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),
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],
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);
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}
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Widget _buildSingleButton(BuildContext context) {
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return InkWell(
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onTap: () {
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if (widget.mode == DialogMode.text) {
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widget.onConfirm?.call();
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_closeDialog(true);
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} else {
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final value = _controller.text.trim();
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widget.onInputConfirm?.call(value);
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_closeDialog(value);
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}
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},
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child: Container(
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width: double.infinity,
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padding: const EdgeInsets.symmetric(vertical: 14),
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alignment: Alignment.center,
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child: Text(
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widget.confirmText,
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style: const TextStyle(
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color: Color(0xFF3874F6),
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fontWeight: FontWeight.w500,
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fontSize: 18,
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),
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),
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),
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);
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}
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} |