82 lines
1.8 KiB
Dart
82 lines
1.8 KiB
Dart
import 'dart:math';
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import 'package:flutter/cupertino.dart';
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import '../functions.dart';
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import 'sort_config.dart';
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enum SortStatus{
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none, // 未操作
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sorting, // 排序中
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sorted, // 排序完成
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}
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class SortState with ChangeNotifier{
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SortState(){
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reset();
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}
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SortStatus status = SortStatus.none;
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List<int> data = [];
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List<int> stepData = [];
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SortConfig _config = SortConfig();
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SortConfig get config => _config;
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Random random = Random();
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set config(SortConfig config){
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_config = config;
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reset();
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notifyListeners();
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}
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void selectName(String name){
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if(name==config.name) return;
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config = config.copyWith(name: name);
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}
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void reset(){
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data.clear();
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status = SortStatus.none;
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notifyListeners();
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int count = config.count;
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if(config.seed!=-1){
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random = Random(config.seed);
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}
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for (int i = 0; i < count; i++) {
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//随机往数组中填值
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data.add(random.nextInt(1000));
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}
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}
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void sort() async{
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status = SortStatus.sorting;
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notifyListeners();
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Stopwatch stopwatch = Stopwatch()..start();
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SortFunction? sortFunction = sortFunctionMap[config.name];
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if(sortFunction!=null){
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await sortFunction(data,(arr) async {
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await Future.delayed(config.duration);
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notifyListeners();
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});
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}
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status = SortStatus.sorted;
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notifyListeners();
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stopwatch.stop();
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print("Sorting completed in ${stopwatch.elapsed.inMilliseconds} ms.");
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}
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}
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/// Provides the current [SortState] to descendant widgets in the tree.
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class SortStateScope extends InheritedNotifier<SortState> {
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const SortStateScope({
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required super.notifier,
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required super.child,
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super.key,
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});
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static SortState of(BuildContext context) =>
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context.dependOnInheritedWidgetOfExactType<SortStateScope>()!.notifier!;
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} |