v7

lib/v8/app/navigation/router/app_router_delegate.dart

@@ -0,0 +1,177 @@
+import 'dart:async';
+import 'package:flutter/material.dart';
+import 'iroute.dart';
+import 'iroute_config.dart';
+import 'route_history_manager.dart';
+import 'routes.dart';
+import 'views/not_find_view.dart';
+
+AppRouterDelegate router = AppRouterDelegate();
+
+class AppRouterDelegate extends RouterDelegate<Object> with ChangeNotifier {
+  String _path = '/color';
+
+  String get path => _path;
+
+  final IRoutePageBuilder? notFindPageBuilder;
+
+  AppRouterDelegate({this.notFindPageBuilder}) {
+    _historyManager.recode(IRouteConfig(uri: Uri.parse(path)));
+  }
+
+  Page _defaultNotFindPageBuilder(_, __) => const MaterialPage(
+        child: Material(child: NotFindPage()),
+      );
+
+  final RouteHistoryManager _historyManager = RouteHistoryManager();
+
+  RouteHistoryManager get historyManager => _historyManager;
+
+  /// 历史回退操作
+  /// 详见: [RouteHistoryManager.back]
+  void back() => _historyManager.back(changeRoute);
+
+  /// 撤销回退操作
+  /// 详见: [RouteHistoryManager.revocation]
+  void revocation() => _historyManager.revocation(changeRoute);
+
+  void closeHistory(int index) {
+    _historyManager.close(index);
+    notifyListeners();
+  }
+
+  void clearHistory() {
+    _historyManager.clear();
+    notifyListeners();
+  }
+
+  final Map<String, Completer<dynamic>> _completerMap = {};
+  final Map<String, dynamic> _pathExtraMap = {};
+  final List<String> keepAlivePath = [];
+
+  FutureOr<dynamic> changeRoute(IRouteConfig config) {
+    String value = config.uri.path;
+    if (_path == value) null;
+    if (config.forResult) {
+      _completerMap[value] = Completer();
+    }
+    if (config.keepAlive) {
+      if (keepAlivePath.contains(value)) {
+        keepAlivePath.remove(value);
+      }
+      keepAlivePath.add(value);
+    }
+    if (config.extra != null) {
+      _pathExtraMap[value] = config.extra;
+    }
+
+    if (config.recordHistory) {
+      _historyManager.recode(config);
+    }
+
+    _path = value;
+    notifyListeners();
+    if (config.forResult) {
+      return _completerMap[value]!.future;
+    }
+  }
+
+  FutureOr<dynamic> changePath(
+    String value, {
+    bool forResult = false,
+    Object? extra,
+    bool keepAlive = false,
+    bool recordHistory = true,
+  }) {
+    return changeRoute(IRouteConfig(
+      uri: Uri.parse(value),
+      forResult: forResult,
+      extra: extra,
+      keepAlive: keepAlive,
+      recordHistory: recordHistory,
+    ));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Navigator(
+      onPopPage: _onPopPage,
+      pages: _buildPages(context, path),
+    );
+  }
+
+  List<Page> _buildPages(BuildContext context, String path) {
+    List<Page> pages = [];
+    List<Page> topPages = _buildPageByPathFromTree(context, path);
+
+    if (keepAlivePath.isNotEmpty) {
+      for (String alivePath in keepAlivePath) {
+        if (alivePath != path) {
+          pages.addAll(_buildPageByPathFromTree(context, alivePath));
+        }
+      }
+
+      /// 去除和 topPages 中重复的界面
+      pages.removeWhere(
+          (element) => topPages.map((e) => e.key).contains(element.key));
+    }
+
+    pages.addAll(topPages);
+    return pages;
+  }
+
+  List<Page> _buildPageByPathFromTree(BuildContext context, String path) {
+    List<Page> result = [];
+    List<IRouteNode> iRoutes = rootRoute.find(path);
+    if (iRoutes.isNotEmpty) {
+      for (int i = 0; i < iRoutes.length; i++) {
+        IRouteNode iroute = iRoutes[i];
+        String path = iroute.path;
+        Object? extra = _pathExtraMap[path];
+        bool keepAlive = keepAlivePath.contains(path);
+        bool forResult = _completerMap.containsKey(path);
+        IRouteConfig config = IRouteConfig(
+          uri: Uri.parse(path),
+          extra: extra,
+          keepAlive: keepAlive,
+          forResult: forResult,
+        );
+        Page? page;
+        if (iroute is NotFindNode) {
+          page = (notFindPageBuilder ?? _defaultNotFindPageBuilder)(context, config);
+        } else {
+          page = iroute.createPage(context, config);
+        }
+        if (page != null) {
+          result.add(page);
+        }
+      }
+    }
+    return result;
+  }
+
+  @override
+  Future<bool> popRoute() async {
+    print('=======popRoute=========');
+    return true;
+  }
+
+  bool _onPopPage(Route route, result) {
+    if (_completerMap.containsKey(path)) {
+      _completerMap[path]?.complete(result);
+      _completerMap.remove(path);
+    }
+    changePath(backPath(path), recordHistory: false);
+    return route.didPop(result);
+  }
+
+  String backPath(String path) {
+    Uri uri = Uri.parse(path);
+    if (uri.pathSegments.length == 1) return path;
+    List<String> parts = List.of(uri.pathSegments)..removeLast();
+    return '/${parts.join('/')}';
+  }
+
+  @override
+  Future<void> setNewRoutePath(configuration) async {}
+}

lib/v8/app/navigation/router/iroute.dart

@@ -0,0 +1,115 @@
+import 'package:flutter/material.dart';
+
+
+import 'iroute_config.dart';
+
+typedef IRoutePageBuilder = Page? Function(
+  BuildContext context,
+  IRouteConfig data,
+);
+
+typedef IRouteWidgetBuilder = Widget? Function(
+  BuildContext context,
+  IRouteConfig data,
+);
+
+abstract class IRouteNode {
+  final String path;
+  final List<IRouteNode> children;
+
+  const IRouteNode({
+    required this.path,
+    required this.children,
+  });
+
+  Page? createPage(BuildContext context, IRouteConfig config);
+
+  List<IRouteNode> find(String input,) {
+    return findNodes(this, Uri.parse(input), 0, '/', []);
+  }
+
+  List<IRouteNode> findNodes(
+    IRouteNode node,
+    Uri uri,
+    int deep,
+    String prefix,
+    List<IRouteNode> result,
+  ) {
+    List<String> parts = uri.pathSegments;
+    if (deep > parts.length - 1) {
+      return result;
+    }
+    String target = parts[deep];
+    if (node.children.isNotEmpty) {
+      target =  prefix + target;
+      List<IRouteNode> nodes = node.children.where((e) => e.path == target).toList();
+      bool match = nodes.isNotEmpty;
+      if (match) {
+        IRouteNode matched = nodes.first;
+        result.add(matched);
+        String nextPrefix = '${matched.path}/';
+        findNodes(matched, uri, ++deep, nextPrefix, result);
+      }else{
+        result.add(NotFindNode(path: target));
+        return result;
+      }
+    }
+    return result;
+  }
+}
+
+/// 优先调用 [pageBuilder] 构建 Page
+/// 没有 [pageBuilder] 时, 使用 [widgetBuilder] 构建组件
+/// 没有  [pageBuilder] 和 [widgetBuilder] 时, 使用 [widget] 构建组件
+class IRoute extends IRouteNode {
+  final IRoutePageBuilder? pageBuilder;
+  final IRouteWidgetBuilder? widgetBuilder;
+  final Widget? widget;
+
+  const IRoute({
+    required super.path,
+    super.children = const [],
+    this.widget,
+    this.pageBuilder,
+    this.widgetBuilder,
+  });
+
+  @override
+  Page? createPage(BuildContext context, IRouteConfig config) {
+    if (pageBuilder != null) {
+      return pageBuilder!(context, config);
+    }
+    Widget? child;
+    if (widgetBuilder != null) {
+      child = widgetBuilder!(context, config);
+    }
+    child ??= widget;
+    if (child != null) {
+      return MaterialPage(child: child, key: config.pageKey);
+    }
+    return null;
+  }
+}
+
+/// 未知路由
+class NotFindNode extends IRouteNode{
+  NotFindNode({required super.path, super.children= const[]});
+
+  @override
+  Page? createPage(BuildContext context, IRouteConfig config) {
+    return null;
+  }
+}
+
+class CellIRouter extends IRoute {
+  final CellBuilder cellBuilder;
+
+  CellIRouter(
+      {required super.path,
+      super.pageBuilder,
+      super.children,
+      required this.cellBuilder});
+}
+
+typedef CellBuilder = Widget Function(BuildContext context, Widget child);
+

lib/v8/app/navigation/router/iroute_config.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+
+class IRouteConfig {
+  final Object? extra;
+  final bool forResult;
+  final Uri uri;
+  final bool keepAlive;
+  final bool recordHistory;
+
+  const IRouteConfig({
+    this.extra,
+    required this.uri,
+    this.forResult = false,
+    this.keepAlive = false,
+    this.recordHistory = false,
+  });
+
+  String get path => uri.path;
+
+  IRouteConfig copyWith({
+    Object? extra,
+    bool? forResult,
+    bool? keepAlive,
+    bool? recordHistory,
+  }) =>
+      IRouteConfig(
+        extra: extra ?? this.extra,
+        forResult: forResult ?? this.forResult,
+        keepAlive: keepAlive ?? this.keepAlive,
+        recordHistory: recordHistory ?? this.recordHistory,
+        uri: uri,
+      );
+
+  ValueKey get pageKey => ValueKey(path);
+}

lib/v8/app/navigation/router/route_history_manager.dart

@@ -0,0 +1,47 @@
+import 'iroute_config.dart';
+
+typedef OnRouteChange = void Function(IRouteConfig config);
+
+class RouteHistoryManager{
+  final List<IRouteConfig> _histories = [];
+  final List<IRouteConfig> _backHistories = [];
+
+  List<IRouteConfig> get histories => _histories.reversed.toList();
+
+  bool get hasHistory => _histories.length > 1;
+
+  bool get hasBackHistory => _backHistories.isNotEmpty;
+
+  /// 将 [config] 加入历史记录
+  void recode(IRouteConfig config){
+    if (_histories.isNotEmpty && config.path == _histories.last.path) return;
+    _histories.add(config);
+  }
+
+  /// 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 [_histories.last]
+  void back(OnRouteChange callback) {
+    if (!hasHistory) return;
+    IRouteConfig top = _histories.removeLast();
+    _backHistories.add(top);
+    if (_histories.isNotEmpty) {
+      callback(_histories.last);
+    }
+  }
+
+  /// 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(OnRouteChange callback) {
+    IRouteConfig target = _backHistories.removeLast();
+    callback(target);
+  }
+
+  void close(int index) {
+    _histories.removeAt(index);
+  }
+
+  void clear() {
+    _histories.clear();
+  }
+}

lib/v8/app/navigation/router/routes.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+import 'iroute_config.dart';
+import 'iroute.dart';
+import '../../../pages/color/color_add_page.dart';
+import '../../../pages/color/color_detail_page.dart';
+import '../../../pages/color/color_page.dart';
+import '../../../pages/counter/counter_page.dart';
+import '../../../pages/user/user_page.dart';
+import '../../../pages/settings/settings_page.dart';
+import '../../../pages/sort/views/sort_page.dart';
+
+
+IRoute rootRoute = const IRoute(
+  path: 'root',
+  children: [
+    IRoute(
+      path: '/color',
+      widget: ColorPage(),
+      children: [
+        IRoute(path: '/color/detail', widgetBuilder: _buildColorDetail),
+        IRoute(path: '/color/add', widget: ColorAddPage()),
+      ],
+    ),
+    IRoute(path: '/counter', widget: CounterPage()),
+    IRoute(path: '/sort', widget: SortPage()),
+    IRoute(path: '/user', widget: UserPage()),
+    IRoute(path: '/settings', widget: SettingPage()),
+  ],
+);
+
+Widget? _buildColorDetail(BuildContext context, IRouteConfig data) {
+  final Map<String, String> queryParams = data.uri.queryParameters;
+  String? selectedColor = queryParams['color'];
+  Color color = Colors.black;
+  if (selectedColor != null) {
+    color = Color(int.parse(selectedColor, radix: 16));
+  } else if (data.extra is Color) {
+    color = data.extra as Color;
+  }
+  return ColorDetailPage(color: color);
+}

lib/v8/app/navigation/router/views/not_find_view.dart

@@ -0,0 +1,25 @@
+import 'package:flutter/material.dart';
+
+class NotFindPage extends StatelessWidget {
+  const NotFindPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return  const Material(
+      child: Center(
+            child: Wrap(
+              spacing: 16,
+              crossAxisAlignment: WrapCrossAlignment.center,
+              direction: Axis.vertical,
+              children: [
+                Icon(Icons.nearby_error,size: 64, color: Colors.redAccent),
+                Text(
+                  '404 Page Not Find',
+                  style: TextStyle(fontSize: 24, color: Colors.grey),
+                ),
+              ],
+            ),
+      ),
+    );
+  }
+}