96 lines
2.3 KiB
Dart
96 lines
2.3 KiB
Dart
// Author: fengshengxiong
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// Date: 2024/5/7
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// Description: 该组件可以回收GetXController，用于处理无法某些组件的GetXController无法回收的情况
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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/// GetBindWidget can bind GetxController, and when the page is disposed,
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/// it can automatically destroy the bound related GetXController
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///
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///
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/// Sample:
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///
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/// class SampleController extends GetxController {
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/// final String title = 'My Awesome View';
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/// }
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///
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/// class SamplePage extends StatelessWidget {
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/// final controller = SampleController();
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///
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/// @override
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/// Widget build(BuildContext context) {
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/// return GetBindWidget(
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/// bind: controller,
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/// child: Container(),
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/// );
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/// }
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/// }
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class GetBindWidget extends StatefulWidget {
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const GetBindWidget({
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super.key,
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this.bind,
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this.tag,
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this.binds,
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this.tags,
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required this.child,
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}) : assert(
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binds == null || tags == null || binds.length == tags.length,
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'The binds and tags arrays length should be equal\n'
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'and the elements in the two arrays correspond one-to-one',
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);
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final GetxController? bind;
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final String? tag;
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final List<GetxController>? binds;
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final List<String>? tags;
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final Widget child;
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@override
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GetBindWidgetState createState() => GetBindWidgetState();
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}
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class GetBindWidgetState extends State<GetBindWidget> {
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@override
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Widget build(BuildContext context) {
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return widget.child;
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}
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@override
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void dispose() {
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_closeGetXController();
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_closeGetXControllers();
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super.dispose();
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}
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///Close GetxController bound to the current page
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void _closeGetXController() {
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if (widget.bind == null) {
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return;
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}
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var key = widget.bind.runtimeType.toString() + (widget.tag ?? '');
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GetInstance().delete(key: key);
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}
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///Batch close GetxController bound to the current page
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void _closeGetXControllers() {
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if (widget.binds == null) {
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return;
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}
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for (var i = 0; i < widget.binds!.length; i++) {
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var type = widget.binds![i].runtimeType.toString();
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if (widget.tags == null) {
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GetInstance().delete(key: type);
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} else {
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var key = type + (widget.tags?[i] ?? '');
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GetInstance().delete(key: key);
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}
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}
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}
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}
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