v7

lib/v6/app/navigation/router/app_router_delegate.dart

@@ -1,8 +1,17 @@
 import 'dart:async';
+import 'dart:io';
 
 import 'package:flutter/material.dart';
 
-import 'iroute.dart';
+import '../../../pages/color/color_detail_page.dart';
+import '../../../pages/color/color_page.dart';
+import '../../../pages/empty/empty_page.dart';
+import '../../../pages/settings/settings_page.dart';
+import '../../../pages/counter/counter_page.dart';
+import '../../../pages/user/user_page.dart';
+import '../transition/fade_transition_page.dart';
+import '../../../pages/color/color_add_page.dart';
+import 'route_history.dart';
 
 const List<String> kDestinationsPaths = [
   '/color',
@@ -17,8 +26,65 @@ class AppRouterDelegate extends RouterDelegate<Object> with ChangeNotifier {
   String _path = '/color';
 
   String get path => _path;
+
   AppRouterDelegate() {
     // keepAlivePath.add('/color');
+    _histories.add(RouteHistory(path));
+  }
+
+  final List<RouteHistory> _histories = [];
+  final List<RouteHistory> _backHistories = [];
+
+  List<RouteHistory> get histories => _histories.reversed.toList();
+
+  bool get hasHistory => _histories.length > 1;
+
+  bool get hasBackHistory => _backHistories.isNotEmpty;
+
+  /// 历史回退操作
+  /// 将当前顶层移除，并加入 _backHistories 撤销列表
+  /// 并转到前一路径
+  void back() {
+    if (!hasHistory) return;
+    RouteHistory top = _histories.removeLast();
+    _backHistories.add(top);
+    if (_histories.isNotEmpty) {
+      _path = _histories.last.path;
+      if (_histories.last.extra != null) {
+        _pathExtraMap[_path] = _histories.last.extra;
+      }
+      notifyListeners();
+    }
+  }
+
+  void toHistory(RouteHistory history) {
+    _path = history.path;
+    if (history.extra != null) {
+      _pathExtraMap[_path] = history.extra;
+    }
+    notifyListeners();
+  }
+
+  void closeHistory(int index) {
+    _histories.removeAt(index);
+    notifyListeners();
+  }
+
+  void clearHistory() {
+    _histories.clear();
+    notifyListeners();
+  }
+
+  /// 撤销回退操作
+  /// 取出回退列表的最后元素，跳转到该路径
+  void revocation() {
+    RouteHistory target = _backHistories.removeLast();
+    _path = target.path;
+    if (target.extra != null) {
+      _pathExtraMap[_path] = target.extra;
+    }
+    _histories.add(target);
+    notifyListeners();
   }
 
   int? get activeIndex {
@@ -37,48 +103,58 @@ class AppRouterDelegate extends RouterDelegate<Object> with ChangeNotifier {
 
   final List<String> keepAlivePath = [];
 
-  FutureOr<dynamic> changePath(String value,
-      {bool forResult = false, Object? extra, bool keepAlive = false}) {
-    if (forResult) {
-      _completerMap[value] = Completer();
-    }
-    if (keepAlive) {
-      if (keepAlivePath.contains(value)) {
-        keepAlivePath.remove(value);
-      }
-      keepAlivePath.add(value);
-    }
-    if (extra != null) {
-      _pathExtraMap[value] = extra;
+  void setPathKeepLive(String value) {
+    if (keepAlivePath.contains(value)) {
+      keepAlivePath.remove(value);
     }
+    keepAlivePath.add(value);
     path = value;
-    if (forResult) {
-      return _completerMap[value]!.future;
-    }
+  }
+
+  void setPathForData(String value, dynamic data) {
+    _pathExtraMap[value] = data;
+    path = value;
+  }
+
+  Future<dynamic> changePathForResult(String value) async {
+    Completer<dynamic> completer = Completer();
+    _completerMap[value] = completer;
+    path = value;
+    return completer.future;
   }
 
   set path(String value) {
     if (_path == value) return;
     _path = value;
+    /// 将路由加入历史列表
+    _addPathToHistory(value,_pathExtraMap[path]);
     notifyListeners();
   }
 
+  void _addPathToHistory(String value, Object? extra) {
+    if (_histories.isNotEmpty && value == _histories.last.path) return;
+    _histories.add(RouteHistory(
+      value,
+      extra: _pathExtraMap[path],
+    ));
+  }
+
   @override
   Widget build(BuildContext context) {
     return Navigator(
       onPopPage: _onPopPage,
-      pages: _buildPages(context, path),
+      pages: _buildPages(path),
     );
   }
 
-  List<Page> _buildPages(BuildContext context,String path) {
+  List<Page> _buildPages(path) {
     List<Page> pages = [];
-    List<Page> topPages = _buildPageByPath(context,path);
+    List<Page> topPages = _buildPageByPath(path);
 
     if (keepAlivePath.isNotEmpty) {
       for (String alivePath in keepAlivePath) {
         if (alivePath != path) {
-          pages.addAll(_buildPageByPath(context,alivePath));
+          pages.addAll(_buildPageByPath(alivePath));
         }
       }
 
@@ -91,36 +167,64 @@ class AppRouterDelegate extends RouterDelegate<Object> with ChangeNotifier {
     return pages;
   }
 
-  Page? _buildPageByPathFromTree(BuildContext context, String path) {
-    // 1. 根据 path 在 iroute 树中查询节点
-    IRoute? iroute = root.match(path);
-    Object? extra = _pathExtraMap[path];
-    bool keepAlive = keepAlivePath.contains(path);
-    bool forResult = _completerMap.containsKey(path);
-    Page? page;
-    if (iroute != null) {
-      page = iroute.builder?.call(
-        context,
-        IRouteData(
-          uri: Uri.parse(path),
-          extra: extra,
-          keepAlive: keepAlive,
-          forResult: forResult,
-        ),
-      );
+  List<Page> _buildPageByPath(String path) {
+    Widget? child;
+    if (path.startsWith('/color')) {
+      return buildColorPages(path);
     }
-    return page;
+
+    if (path == kDestinationsPaths[1]) {
+      child = const CounterPage();
+    }
+    if (path == kDestinationsPaths[2]) {
+      child = const UserPage();
+    }
+    if (path == kDestinationsPaths[3]) {
+      child = const SettingPage();
+    }
+    return [
+      FadeTransitionPage(
+        key: ValueKey(path),
+        child: child ?? const EmptyPage(),
+      )
+    ];
   }
 
-  List<Page> _buildPageByPath(BuildContext context,String path) {
+  List<Page> buildColorPages(String path) {
     List<Page> result = [];
     Uri uri = Uri.parse(path);
-    String dist = '';
     for (String segment in uri.pathSegments) {
-      dist += '/$segment';
-      Page? page = _buildPageByPathFromTree(context,dist);
-      if(page!=null){
-        result.add(page);
+      if (segment == 'color') {
+        result.add(const FadeTransitionPage(
+          key: ValueKey('/color'),
+          child: ColorPage(),
+        ));
+      }
+      if (segment == 'detail') {
+        final Map<String, String> queryParams = uri.queryParameters;
+        String? selectedColor = queryParams['color'];
+        if (selectedColor != null) {
+          Color color = Color(int.parse(selectedColor, radix: 16));
+          result.add(FadeTransitionPage(
+            key: const ValueKey('/color/detail'),
+            child: ColorDetailPage(color: color),
+          ));
+        } else {
+          Color? selectedColor = _pathExtraMap[path];
+          if (selectedColor != null) {
+            result.add(FadeTransitionPage(
+              key: const ValueKey('/color/detail'),
+              child: ColorDetailPage(color: selectedColor),
+            ));
+            _pathExtraMap.remove(path);
+          }
+        }
+      }
+      if (segment == 'add') {
+        result.add(const FadeTransitionPage(
+          key: ValueKey('/color/add'),
+          child: ColorAddPage(),
+        ));
       }
     }
     return result;