97 lines
2.2 KiB
Dart
97 lines
2.2 KiB
Dart
import 'package:flutter/material.dart';
|
|
import 'package:get/get.dart';
|
|
|
|
/// [author] Fson
|
|
/// [date] 2022/12/7
|
|
/// [description]
|
|
|
|
/// GetBindWidget can bind GetxController, and when the page is disposed,
|
|
/// it can automatically destroy the bound related GetXController
|
|
///
|
|
///
|
|
/// Sample:
|
|
///
|
|
/// class SampleController extends GetxController {
|
|
/// final String title = 'My Awesome View';
|
|
/// }
|
|
///
|
|
/// class SamplePage extends StatelessWidget {
|
|
/// final controller = SampleController();
|
|
///
|
|
/// @override
|
|
/// Widget build(BuildContext context) {
|
|
/// return GetBindWidget(
|
|
/// bind: controller,
|
|
/// child: Container(),
|
|
/// );
|
|
/// }
|
|
/// }
|
|
class GetBindWidget extends StatefulWidget {
|
|
const GetBindWidget({
|
|
super.key,
|
|
this.bind,
|
|
this.tag,
|
|
this.binds,
|
|
this.tags,
|
|
required this.child,
|
|
}) : assert(
|
|
binds == null || tags == null || binds.length == tags.length,
|
|
'The binds and tags arrays length should be equal\n'
|
|
'and the elements in the two arrays correspond one-to-one',
|
|
);
|
|
|
|
final GetxController? bind;
|
|
final String? tag;
|
|
|
|
final List<GetxController>? binds;
|
|
final List<String>? tags;
|
|
|
|
final Widget child;
|
|
|
|
@override
|
|
GetBindWidgetState createState() => GetBindWidgetState();
|
|
}
|
|
|
|
class GetBindWidgetState extends State<GetBindWidget>{
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return widget.child;
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_closeGetXController();
|
|
_closeGetXControllers();
|
|
|
|
super.dispose();
|
|
}
|
|
|
|
///Close GetxController bound to the current page
|
|
void _closeGetXController() {
|
|
if (widget.bind == null) {
|
|
return;
|
|
}
|
|
|
|
var key = widget.bind.runtimeType.toString() + (widget.tag ?? '');
|
|
GetInstance().delete(key: key);
|
|
}
|
|
|
|
///Batch close GetxController bound to the current page
|
|
void _closeGetXControllers() {
|
|
if (widget.binds == null) {
|
|
return;
|
|
}
|
|
|
|
for (var i = 0; i < widget.binds!.length; i++) {
|
|
var type = widget.binds![i].runtimeType.toString();
|
|
|
|
if (widget.tags == null) {
|
|
GetInstance().delete(key: type);
|
|
} else {
|
|
var key = type + (widget.tags?[i] ?? '');
|
|
GetInstance().delete(key: key);
|
|
}
|
|
}
|
|
}
|
|
}
|