added simple search feature

lib/main.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'pages/collection_page.dart';
 import 'pages/collections_list_page.dart';
+import 'pages/search_page.dart';
 import 'service/shared_link_provider.dart';
 import 'service/storage.dart';
 import 'service/share_intent_service.dart';
@@ -68,6 +69,7 @@ class _MapsBookmarksState extends State<MapsBookmarks>
       routes: {
         CollectionsListPage.routeName: (context) => const CollectionsListPage(),
         CollectionPage.routeName: (context) => const CollectionPage(),
+        SearchPage.routeName: (context) => const SearchPage(),
       },
     );
   }

lib/pages/collection_page.dart

@@ -4,6 +4,7 @@ import 'package:provider/provider.dart';
 import '../model/bookmark.dart';
 import '../model/maps_link_metadata.dart';
 import '../service/bookmarks_provider.dart';
+import '../service/notifying.dart';
 import '../service/shared_link_provider.dart';
 import '../service/storage.dart';
 import '../service/url_launcher.dart';
@@ -62,8 +63,8 @@ class _CollectionPageState extends State<CollectionPage> {
     return ListTile(
       title: Text(bookmark.name),
       onTap: () => launchUrlFromString(bookmark.link).then((errorCode) {
-        if (context.mounted && errorCode != UrlLaunchErrorCode.none) {
+        if (context.mounted) {
-          return showUrlError(context, errorCode);
+          return Notifying.showUrlErrorSnackbar(context, errorCode);
         }
       }),
       onLongPress: () => editBookmark(bookmark),
@@ -109,16 +110,4 @@ class _CollectionPageState extends State<CollectionPage> {
       ),
     );
   }
-
-  void showUrlError(BuildContext context, UrlLaunchErrorCode errorCode) {
-    String errorText = '';
-    if (errorCode == UrlLaunchErrorCode.couldNotLaunch) {
-      errorText = 'Could not launch Url';
-    } else {
-      errorText = 'Invalid Url';
-    }
-    ScaffoldMessenger.of(
-      context,
-    ).showSnackBar(SnackBar(content: Text(errorText)));
-  }
 }

lib/pages/collections_list_page.dart

@@ -7,6 +7,7 @@ import '../service/shared_link_provider.dart';
 import '../service/storage.dart';
 import '../widgets/create_bookmark_collection_dialog.dart';
 import 'collection_page.dart';
+import 'search_page.dart' show SearchPage;
 
 class CollectionsListPage extends StatefulWidget {
   const CollectionsListPage({super.key});
@@ -88,6 +89,12 @@ class _CollectionsListPageState extends State<CollectionsListPage> {
             TextButton(
               onPressed: () => provider.removeCurrentMapsLink(),
               child: Text('Cancel'),
+            )
+          else
+            IconButton(
+              onPressed: () =>
+                  Navigator.of(context).pushNamed(SearchPage.routeName),
+              icon: Icon(Icons.search),
             ),
         ],
       ),

lib/pages/search_page.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+
+import '../model/bookmark.dart';
+import '../service/storage.dart';
+import '../widgets/search_widgets/search_bar_widget.dart';
+import '../widgets/search_widgets/search_results_widget.dart';
+
+class SearchPage extends StatefulWidget {
+  const SearchPage({super.key});
+
+  static const String routeName = '/search';
+
+  @override
+  State<SearchPage> createState() => _SearchPageState();
+}
+
+class _SearchPageState extends State<SearchPage> {
+  final List<Bookmark> allBookmarks = Storage.loadBookmarks();
+  String searchString = '';
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: Text('Search')),
+      body: Column(
+        children: [
+          SearchBarWidget(
+            onEditingComplete: (searchString) => setState(() {
+              this.searchString = searchString;
+            }),
+          ),
+          Expanded(
+            child: SearchResultsWidget(
+              bookmarks: allBookmarks.where(
+                (bookmark) => bookmark.name.contains(searchString),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/service/notifying.dart

@@ -0,0 +1,37 @@
+import 'package:flutter/material.dart';
+
+import 'url_launcher.dart' show UrlLaunchErrorCode;
+
+class Notifying {
+  static void showSnackbar(
+    BuildContext context, {
+    required String text,
+    bool isError = false,
+  }) {
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Text(
+          text,
+          style: isError
+              ? TextStyle(color: Theme.of(context).colorScheme.error)
+              : null,
+        ),
+      ),
+    );
+  }
+
+  static void showUrlErrorSnackbar(
+    BuildContext context,
+    UrlLaunchErrorCode errorCode,
+  ) {
+    String errorText = '';
+    if (errorCode == UrlLaunchErrorCode.none) {
+      return;
+    } else if (errorCode == UrlLaunchErrorCode.couldNotLaunch) {
+      errorText = 'Could not launch Url';
+    } else {
+      errorText = 'Invalid Url';
+    }
+    showSnackbar(context, text: errorText, isError: true);
+  }
+}

lib/widgets/search_widgets/search_bar_widget.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+
+class SearchBarWidget extends StatelessWidget {
+  const SearchBarWidget({super.key, required this.onEditingComplete});
+
+  final Function(String searchString) onEditingComplete;
+
+  @override
+  Widget build(BuildContext context) {
+    TextEditingController searchBarController = TextEditingController();
+    return TextField(
+      controller: searchBarController,
+      onEditingComplete: () => onEditingComplete(searchBarController.text),
+    );
+  }
+}

lib/widgets/search_widgets/search_results_widget.dart

@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+import '../../model/bookmark.dart';
+import '../../service/notifying.dart';
+import '../../service/url_launcher.dart';
+
+class SearchResultsWidget extends StatelessWidget {
+  const SearchResultsWidget({super.key, required this.bookmarks});
+
+  final Iterable<Bookmark> bookmarks;
+
+  Widget bookmarkListItemBuilder(BuildContext context, int index) {
+    final bookmark = bookmarks.elementAt(index);
+    return ListTile(
+      title: Text(bookmark.name),
+      onTap: () => launchUrlFromString(bookmark.link).then((errorCode) {
+        if (context.mounted && errorCode != UrlLaunchErrorCode.none) {
+          Notifying.showUrlErrorSnackbar(context, errorCode);
+        } else if (context.mounted) {
+          Navigator.of(context).pop();
+        }
+      }),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (bookmarks.isNotEmpty) {
+      return ListView.builder(
+        itemBuilder: bookmarkListItemBuilder,
+        itemCount: bookmarks.length,
+      );
+    }
+    return Center(child: Text('Start searching'));
+  }
+}