63 lines
2.0 KiB
Dart
63 lines
2.0 KiB
Dart
// Copyright 2021, the Flutter project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:flutter/widgets.dart';
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import 'package:path_to_regexp/path_to_regexp.dart';
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import 'parsed_route.dart';
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/// Used by [TemplateRouteParser] to guard access to routes.
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typedef RouteGuard<T> = Future<T> Function(T from);
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/// Parses the URI path into a [ParsedRoute].
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class TemplateRouteParser extends RouteInformationParser<ParsedRoute> {
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final List<String> _pathTemplates;
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final ParsedRoute initialRoute;
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TemplateRouteParser({
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/// The list of allowed path templates (['/', '/users/:id'])
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required List<String> allowedPaths,
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/// The initial route
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String initialRoute = '/',
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}) : initialRoute = ParsedRoute(initialRoute, initialRoute, {}, {}),
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_pathTemplates = [
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...allowedPaths,
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],
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assert(allowedPaths.contains(initialRoute));
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@override
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Future<ParsedRoute> parseRouteInformation(
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RouteInformation routeInformation,
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) async {
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print("=======parseRouteInformation:${routeInformation.uri.path}===================");
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final uri = routeInformation.uri;
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final path = uri.toString();
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final queryParams = uri.queryParameters;
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var parsedRoute = initialRoute;
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for (var pathTemplate in _pathTemplates) {
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final parameters = <String>[];
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var pathRegExp = pathToRegExp(pathTemplate, parameters: parameters);
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if (pathRegExp.hasMatch(path)) {
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final match = pathRegExp.matchAsPrefix(path);
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if (match == null) continue;
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final params = extract(parameters, match);
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parsedRoute = ParsedRoute(path, pathTemplate, params, queryParams);
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}
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}
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return parsedRoute;
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}
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@override
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RouteInformation restoreRouteInformation(ParsedRoute configuration) {
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print("=======restoreRouteInformation:${configuration}===================");
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return RouteInformation(uri: Uri.parse(configuration.path));
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}
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}
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