added license

Reviewed-on: #7

.gitea/workflows/android_build.yml

@@ -4,9 +4,6 @@ on:
   push:
     branches:
       - main
-  pull_request:
-    branches:
-      - main
   workflow_dispatch:
 
 

.gitignore

@@ -1,16 +1,23 @@
+# Do not remove or rename entries in this file, only add new ones
+# See https://github.com/flutter/flutter/issues/128635 for more context.
+
 # Miscellaneous
 *.class
+*.lock
 *.log
 *.pyc
 *.swp
 .DS_Store
 .atom/
-.build/
 .buildlog/
 .history
 .svn/
-.swiftpm/
-migrate_working_dir/
+lib/l10n/app_localizations*
+
+# As packages are no longer pinned, we use a lockfile for testing locally.
+# When unpinning packages, Using lockfiles ensures that failures in PRs are
+# actually due to those PRs, not due to a package being updated.
+!/pubspec.lock
 
 # IntelliJ related
 *.iml
@@ -18,28 +25,142 @@ migrate_working_dir/
 *.iws
 .idea/
 
-# The .vscode folder contains launch configuration and tasks you configure in
-# VS Code which you may wish to be included in version control, so this line
-# is commented out by default.
-#.vscode/
+# Visual Studio Code related
+.classpath
+.project
+.settings/
+.vscode/*
+.ccls-cache
+
+# This file, on the master branch, should never exist or be checked-in.
+#
+# On a *final* release branch, that is, what will ship to stable or beta, the
+# file can be force added (git add --force) and checked-in in order to effectively
+# "pin" the engine artifact version so the flutter tool does not need to use git
+# to determine the engine artifacts.
+#
+# See https://github.com/flutter/flutter/blob/main/docs/tool/Engine-artifacts.md.
+/bin/internal/engine.version
+
+# Flutter repo-specific
+/bin/cache/
+/bin/internal/bootstrap.bat
+/bin/internal/bootstrap.sh
+/bin/internal/engine.realm
+/bin/mingit/
+/dev/benchmarks/mega_gallery/
+/dev/bots/.recipe_deps
+/dev/bots/android_tools/
+/dev/devicelab/ABresults*.json
+/dev/docs/doc/
+/dev/docs/api_docs.zip
+/dev/docs/flutter.docs.zip
+/dev/docs/lib/
+/dev/docs/pubspec.yaml
+/dev/integration_tests/**/xcuserdata
+/dev/integration_tests/**/Pods
+/packages/flutter/coverage/
+version
+analysis_benchmark.json
+
+# packages file containing multi-root paths
+.packages.generated
 
 # Flutter/Dart/Pub related
 **/doc/api/
-**/ios/Flutter/.last_build_id
 .dart_tool/
 .flutter-plugins-dependencies
+**/generated_plugin_registrant.dart
+.packages
+.pub-preload-cache/
 .pub-cache/
 .pub/
-/build/
-/coverage/
+build/
+flutter_*.png
+linked_*.ds
+unlinked.ds
+unlinked_spec.ds
 
-# Symbolication related
+# Android related
+**/android/**/gradle-wrapper.jar
+.gradle/
+**/android/captures/
+**/android/gradlew
+**/android/gradlew.bat
+**/android/**/GeneratedPluginRegistrant.java
+**/android/key.properties
+*.jks
+local.properties
+**/.cxx/
+
+# iOS/XCode related
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/.last_build_id
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/ephemeral
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# macOS
+**/Flutter/ephemeral/
+**/Pods/
+**/macos/Flutter/GeneratedPluginRegistrant.swift
+**/macos/Flutter/ephemeral
+**/xcuserdata/
+
+# Windows
+**/windows/flutter/ephemeral/
+**/windows/flutter/generated_plugin_registrant.cc
+**/windows/flutter/generated_plugin_registrant.h
+**/windows/flutter/generated_plugins.cmake
+
+# Linux
+**/linux/flutter/ephemeral/
+**/linux/flutter/generated_plugin_registrant.cc
+**/linux/flutter/generated_plugin_registrant.h
+**/linux/flutter/generated_plugins.cmake
+
+# Coverage
+coverage/
+
+# Symbols
 app.*.symbols
 
-# Obfuscation related
-app.*.map.json
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+!/dev/ci/**/Gemfile.lock
+!.vscode/settings.json
 
-# Android Studio will place build artifacts here
-/android/app/debug
-/android/app/profile
-/android/app/release
+# Monorepo
+.cipd
+.gclient
+.gclient_entries
+.python-version
+.gclient_previous_custom_vars
+.gclient_previous_sync_commits

License

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
     <application
         android:label="maps_bookmarks"
         android:name="${applicationName}"

lib/assets/constants.dart

@@ -0,0 +1,3 @@
+const String appName = 'Maps Bookmarks';
+const String jsonFileName = 'MapsBookmarksData.json';
+const String defaultAndroidExportDirectory = '/storage/emulated/0/Documents';

lib/l10n/app_de.arb

@@ -23,5 +23,21 @@
     "collectionName": "Name der Sammlung",
     "bookmarkTitle": "Titel des Lesezeichens",
     "url": "Url",
-    "description": "Beschreibung"
+    "description": "Beschreibung",
+    "settings": "Einstellungen",
+    "appData": "App-Daten",
+    "export": "Exportieren",
+    "import": "Importieren",
+    "activateJsonExport": "Immer als JSON speichern",
+
+    "@@comment": "Info",
+    "exportSuccess": "Daten exportiert",
+    "importSuccess": "Daten importiert",
+
+    "@@comment": "Errors",
+    "errorStoragePermisson": "Zugriff auf Speicher verwehrt",
+    "errorCouldNotLaunchUrl": "Konnte Url nicht öffnen",
+    "errorInvalidUrl": "Fehlerhafte Url",
+    "exportFailed": "Export fehlgeschlagen",
+    "importFailed": "Import fehlgeschlagen"
 }

lib/l10n/app_en.arb

@@ -23,5 +23,22 @@
     "collectionName": "Collection Name",
     "bookmarkTitle": "Bookmark Title",
     "url": "Url",
-    "description": "Description"
+    "description": "Description",
+    "settings": "Settings",
+    "appData": "App data",
+    "export": "Export",
+    "import": "Import",
+    "activateJsonExport": "Always save to JSON",
+
+    
+    "@@comment": "Info",
+    "exportSuccess": "Exported data",
+    "importSuccess": "Imported data",
+    
+    "@@comment": "Errors",
+    "errorStoragePermisson": "Storage permissions denied",
+    "errorCouldNotLaunchUrl": "Could not launch Url",
+    "errorInvalidUrl": "Invalid Url",
+    "exportFailed": "Export failed",
+    "importFailed": "Import failed"
 }

lib/l10n/app_localizations.dart

@@ -1,236 +0,0 @@
-import 'dart:async';
-
-import 'package:flutter/foundation.dart';
-import 'package:flutter/widgets.dart';
-import 'package:flutter_localizations/flutter_localizations.dart';
-import 'package:intl/intl.dart' as intl;
-
-import 'app_localizations_de.dart';
-import 'app_localizations_en.dart';
-
-// ignore_for_file: type=lint
-
-/// Callers can lookup localized strings with an instance of AppLocalizations
-/// returned by `AppLocalizations.of(context)`.
-///
-/// Applications need to include `AppLocalizations.delegate()` in their app's
-/// `localizationDelegates` list, and the locales they support in the app's
-/// `supportedLocales` list. For example:
-///
-/// ```dart
-/// import 'l10n/app_localizations.dart';
-///
-/// return MaterialApp(
-///   localizationsDelegates: AppLocalizations.localizationsDelegates,
-///   supportedLocales: AppLocalizations.supportedLocales,
-///   home: MyApplicationHome(),
-/// );
-/// ```
-///
-/// ## Update pubspec.yaml
-///
-/// Please make sure to update your pubspec.yaml to include the following
-/// packages:
-///
-/// ```yaml
-/// dependencies:
-///   # Internationalization support.
-///   flutter_localizations:
-///     sdk: flutter
-///   intl: any # Use the pinned version from flutter_localizations
-///
-///   # Rest of dependencies
-/// ```
-///
-/// ## iOS Applications
-///
-/// iOS applications define key application metadata, including supported
-/// locales, in an Info.plist file that is built into the application bundle.
-/// To configure the locales supported by your app, you’ll need to edit this
-/// file.
-///
-/// First, open your project’s ios/Runner.xcworkspace Xcode workspace file.
-/// Then, in the Project Navigator, open the Info.plist file under the Runner
-/// project’s Runner folder.
-///
-/// Next, select the Information Property List item, select Add Item from the
-/// Editor menu, then select Localizations from the pop-up menu.
-///
-/// Select and expand the newly-created Localizations item then, for each
-/// locale your application supports, add a new item and select the locale
-/// you wish to add from the pop-up menu in the Value field. This list should
-/// be consistent with the languages listed in the AppLocalizations.supportedLocales
-/// property.
-abstract class AppLocalizations {
-  AppLocalizations(String locale)
-    : localeName = intl.Intl.canonicalizedLocale(locale.toString());
-
-  final String localeName;
-
-  static AppLocalizations? of(BuildContext context) {
-    return Localizations.of<AppLocalizations>(context, AppLocalizations);
-  }
-
-  static const LocalizationsDelegate<AppLocalizations> delegate =
-      _AppLocalizationsDelegate();
-
-  /// A list of this localizations delegate along with the default localizations
-  /// delegates.
-  ///
-  /// Returns a list of localizations delegates containing this delegate along with
-  /// GlobalMaterialLocalizations.delegate, GlobalCupertinoLocalizations.delegate,
-  /// and GlobalWidgetsLocalizations.delegate.
-  ///
-  /// Additional delegates can be added by appending to this list in
-  /// MaterialApp. This list does not have to be used at all if a custom list
-  /// of delegates is preferred or required.
-  static const List<LocalizationsDelegate<dynamic>> localizationsDelegates =
-      <LocalizationsDelegate<dynamic>>[
-        delegate,
-        GlobalMaterialLocalizations.delegate,
-        GlobalCupertinoLocalizations.delegate,
-        GlobalWidgetsLocalizations.delegate,
-      ];
-
-  /// A list of this localizations delegate's supported locales.
-  static const List<Locale> supportedLocales = <Locale>[
-    Locale('de'),
-    Locale('en'),
-  ];
-
-  /// No description provided for @addToCollection.
-  ///
-  /// In en, this message translates to:
-  /// **'Add to {collection_name}'**
-  String addToCollection(String collection_name);
-
-  /// No description provided for @cancel.
-  ///
-  /// In en, this message translates to:
-  /// **'Cancel'**
-  String get cancel;
-
-  /// No description provided for @chooseCollection.
-  ///
-  /// In en, this message translates to:
-  /// **'Choose Collection'**
-  String get chooseCollection;
-
-  /// No description provided for @collections.
-  ///
-  /// In en, this message translates to:
-  /// **'Collections'**
-  String get collections;
-
-  /// No description provided for @tipCreateCollections.
-  ///
-  /// In en, this message translates to:
-  /// **'Create your first Collection to get started!'**
-  String get tipCreateCollections;
-
-  /// No description provided for @search.
-  ///
-  /// In en, this message translates to:
-  /// **'Search'**
-  String get search;
-
-  /// No description provided for @createBookmark.
-  ///
-  /// In en, this message translates to:
-  /// **'Create Bookmark'**
-  String get createBookmark;
-
-  /// No description provided for @createCollection.
-  ///
-  /// In en, this message translates to:
-  /// **'Create Collection'**
-  String get createCollection;
-
-  /// No description provided for @create.
-  ///
-  /// In en, this message translates to:
-  /// **'Create'**
-  String get create;
-
-  /// No description provided for @delete.
-  ///
-  /// In en, this message translates to:
-  /// **'Delete'**
-  String get delete;
-
-  /// No description provided for @add.
-  ///
-  /// In en, this message translates to:
-  /// **'Add'**
-  String get add;
-
-  /// No description provided for @startSearching.
-  ///
-  /// In en, this message translates to:
-  /// **'Start searching'**
-  String get startSearching;
-
-  /// No description provided for @tipNoResults.
-  ///
-  /// In en, this message translates to:
-  /// **'There are no results that match your search'**
-  String get tipNoResults;
-
-  /// No description provided for @collectionName.
-  ///
-  /// In en, this message translates to:
-  /// **'Collection Name'**
-  String get collectionName;
-
-  /// No description provided for @bookmarkTitle.
-  ///
-  /// In en, this message translates to:
-  /// **'Bookmark Title'**
-  String get bookmarkTitle;
-
-  /// No description provided for @url.
-  ///
-  /// In en, this message translates to:
-  /// **'Url'**
-  String get url;
-
-  /// No description provided for @description.
-  ///
-  /// In en, this message translates to:
-  /// **'Description'**
-  String get description;
-}
-
-class _AppLocalizationsDelegate
-    extends LocalizationsDelegate<AppLocalizations> {
-  const _AppLocalizationsDelegate();
-
-  @override
-  Future<AppLocalizations> load(Locale locale) {
-    return SynchronousFuture<AppLocalizations>(lookupAppLocalizations(locale));
-  }
-
-  @override
-  bool isSupported(Locale locale) =>
-      <String>['de', 'en'].contains(locale.languageCode);
-
-  @override
-  bool shouldReload(_AppLocalizationsDelegate old) => false;
-}
-
-AppLocalizations lookupAppLocalizations(Locale locale) {
-  // Lookup logic when only language code is specified.
-  switch (locale.languageCode) {
-    case 'de':
-      return AppLocalizationsDe();
-    case 'en':
-      return AppLocalizationsEn();
-  }
-
-  throw FlutterError(
-    'AppLocalizations.delegate failed to load unsupported locale "$locale". This is likely '
-    'an issue with the localizations generation tool. Please file an issue '
-    'on GitHub with a reproducible sample app and the gen-l10n configuration '
-    'that was used.',
-  );
-}

lib/l10n/app_localizations_de.dart

@@ -1,63 +0,0 @@
-// ignore: unused_import
-import 'package:intl/intl.dart' as intl;
-import 'app_localizations.dart';
-
-// ignore_for_file: type=lint
-
-/// The translations for German (`de`).
-class AppLocalizationsDe extends AppLocalizations {
-  AppLocalizationsDe([String locale = 'de']) : super(locale);
-
-  @override
-  String addToCollection(String collection_name) {
-    return 'Speichern in $collection_name';
-  }
-
-  @override
-  String get cancel => 'Abbrechen';
-
-  @override
-  String get chooseCollection => 'Sammlung auswählen';
-
-  @override
-  String get collections => 'Sammlungen';
-
-  @override
-  String get tipCreateCollections => 'Erstelle deine erste Sammlung!';
-
-  @override
-  String get search => 'Suche';
-
-  @override
-  String get createBookmark => 'Lesezeichen erstellen';
-
-  @override
-  String get createCollection => 'Sammlung erstellen';
-
-  @override
-  String get create => 'Erstellen';
-
-  @override
-  String get delete => 'Löschen';
-
-  @override
-  String get add => 'Hinzufügen';
-
-  @override
-  String get startSearching => 'Suche etwas';
-
-  @override
-  String get tipNoResults => 'Keine Suchergebnisse gefunden';
-
-  @override
-  String get collectionName => 'Name der Sammlung';
-
-  @override
-  String get bookmarkTitle => 'Titel des Lesezeichens';
-
-  @override
-  String get url => 'Url';
-
-  @override
-  String get description => 'Beschreibung';
-}

lib/l10n/app_localizations_en.dart

@@ -1,64 +0,0 @@
-// ignore: unused_import
-import 'package:intl/intl.dart' as intl;
-import 'app_localizations.dart';
-
-// ignore_for_file: type=lint
-
-/// The translations for English (`en`).
-class AppLocalizationsEn extends AppLocalizations {
-  AppLocalizationsEn([String locale = 'en']) : super(locale);
-
-  @override
-  String addToCollection(String collection_name) {
-    return 'Add to $collection_name';
-  }
-
-  @override
-  String get cancel => 'Cancel';
-
-  @override
-  String get chooseCollection => 'Choose Collection';
-
-  @override
-  String get collections => 'Collections';
-
-  @override
-  String get tipCreateCollections =>
-      'Create your first Collection to get started!';
-
-  @override
-  String get search => 'Search';
-
-  @override
-  String get createBookmark => 'Create Bookmark';
-
-  @override
-  String get createCollection => 'Create Collection';
-
-  @override
-  String get create => 'Create';
-
-  @override
-  String get delete => 'Delete';
-
-  @override
-  String get add => 'Add';
-
-  @override
-  String get startSearching => 'Start searching';
-
-  @override
-  String get tipNoResults => 'There are no results that match your search';
-
-  @override
-  String get collectionName => 'Collection Name';
-
-  @override
-  String get bookmarkTitle => 'Bookmark Title';
-
-  @override
-  String get url => 'Url';
-
-  @override
-  String get description => 'Description';
-}

lib/main.dart

@@ -5,7 +5,9 @@ import 'l10n/app_localizations.dart';
 import 'pages/collection_page.dart';
 import 'pages/collections_list_page.dart';
 import 'pages/search_page.dart';
+import 'pages/settings_page.dart';
 import 'service/search_provider.dart';
+import 'service/settings_provider.dart';
 import 'service/shared_link_provider.dart';
 import 'service/storage.dart';
 import 'service/share_intent_service.dart';
@@ -19,6 +21,7 @@ void main() async {
       providers: [
         ChangeNotifierProvider(create: (_) => SharedLinkProvider()),
         ChangeNotifierProvider(create: (_) => SearchProvider()),
+        ChangeNotifierProvider(create: (_) => SettingsProvider()),
       ],
       child: const MapsBookmarks(),
     ),
@@ -83,6 +86,7 @@ class _MapsBookmarksState extends State<MapsBookmarks>
         CollectionsListPage.routeName: (context) => const CollectionsListPage(),
         CollectionPage.routeName: (context) => const CollectionPage(),
         SearchPage.routeName: (context) => const SearchPage(),
+        SettingsPage.routeName: (context) => const SettingsPage(),
       },
     );
   }

lib/model/settings.dart

@@ -0,0 +1,39 @@
+import '../assets/constants.dart' as constants;
+
+class Settings {
+  final String exportDirectoryPath;
+  final bool alwaysExportEnabled;
+
+  Settings._({
+    required this.exportDirectoryPath,
+    required this.alwaysExportEnabled,
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      'exportDirectoryPath': exportDirectoryPath,
+      'alwaysExportEnabled': alwaysExportEnabled,
+    };
+  }
+
+  factory Settings.fromJson(Map<String, dynamic> json) {
+    return Settings._(
+      exportDirectoryPath: json['exportDirectoryPath'] as String,
+      alwaysExportEnabled: json['alwaysExportEnabled'] as bool,
+    );
+  }
+
+  factory Settings.defaults() {
+    return Settings._(
+      exportDirectoryPath: constants.defaultAndroidExportDirectory,
+      alwaysExportEnabled: false,
+    );
+  }
+
+  Settings copyWith({String? exportDirectoryPath, bool? alwaysExportEnabled}) {
+    return Settings._(
+      exportDirectoryPath: exportDirectoryPath ?? this.exportDirectoryPath,
+      alwaysExportEnabled: alwaysExportEnabled ?? this.alwaysExportEnabled,
+    );
+  }
+}

lib/pages/collection_page.dart

@@ -9,6 +9,7 @@ import '../service/notifying.dart';
 import '../service/shared_link_provider.dart';
 import '../service/storage.dart';
 import '../service/url_launcher.dart';
+import '../widgets/collection_page_widgets/list_item_actions_widget.dart';
 import '../widgets/create_bookmark_dialog.dart';
 
 class CollectionPage extends StatefulWidget {
@@ -22,6 +23,7 @@ class CollectionPage extends StatefulWidget {
 
 class _CollectionPageState extends State<CollectionPage> {
   MapsLinkMetadata? selectedMapsLink;
+  int selectedBookmarkId = -1;
 
   @override
   void initState() {
@@ -52,29 +54,46 @@ class _CollectionPageState extends State<CollectionPage> {
         ).whenComplete(() => setState(() {}));
       },
     ),
-  );
+  ).whenComplete(deselectBookmark);
 
   void onBookmarkSaved(Bookmark bookmark) {
     Storage.addOrUpdateBookmark(bookmark);
     setState(() {});
-    context.read<SharedLinkProvider>().removeCurrentMapsLink();
+    Provider.of<SharedLinkProvider>(
+      context,
+      listen: false,
+    ).removeCurrentMapsLink();
   }
 
   Widget bookmarksListItemBuilder(BuildContext context, Bookmark bookmark) {
+    final selected = selectedBookmarkId == bookmark.id;
     return ListTile(
       title: Text(bookmark.name),
-      onTap: () => launchUrlFromString(bookmark.link).then((errorCode) {
+      selected: selected,
+      onTap: () {
+        if (selected) {
+          onCancelSelectionPressed();
+          setState(() {});
+        } else if (selectedBookmarkId != -1 && !selected) {
+          selectedBookmarkId = bookmark.id;
+          setState(() {});
+        } else {
+          launchUrlFromString(bookmark.link).then((errorCode) {
             if (context.mounted) {
               return Notifying.showUrlErrorSnackbar(context, errorCode);
             }
+          });
+        }
+      },
+      onLongPress: () => setState(() {
+        selectedBookmarkId = bookmark.id;
       }),
-      onLongPress: () => editBookmark(bookmark),
     );
   }
 
   @override
   Widget build(BuildContext context) {
-    SharedLinkProvider provider = context.watch<SharedLinkProvider>();
+    SharedLinkProvider provider = Provider.of<SharedLinkProvider>(context);
     selectedMapsLink = provider.currentMapsLinkMetadata;
 
     if (BookmarksProvider.selectedCollectionId == null) {
@@ -87,11 +106,18 @@ class _CollectionPageState extends State<CollectionPage> {
       (c) => c.id == BookmarksProvider.selectedCollectionId,
     );
 
-    return Scaffold(
+    return PopScope(
+      canPop: selectedBookmarkId == -1,
+      onPopInvokedWithResult: (didPop, result) {
+        if (didPop == false) deselectBookmark();
+      },
+      child: Scaffold(
         appBar: AppBar(
           title: selectedMapsLink != null
               ? Text(
-                AppLocalizations.of(context)!.addToCollection(collection.name),
+                  AppLocalizations.of(
+                    context,
+                  )!.addToCollection(collection.name),
                 )
               : Text(collection.name),
           actions: [
@@ -102,6 +128,17 @@ class _CollectionPageState extends State<CollectionPage> {
               ),
           ],
         ),
+        bottomNavigationBar: selectedBookmarkId > 0
+            ? ListItemActionsWidget(
+                onDeletePressed: onDeleteBookmarkPressed,
+                onCancelPressed: onCancelSelectionPressed,
+                onEditPressed: () => editBookmark(
+                  bookmarks.firstWhere(
+                    (element) => element.id == selectedBookmarkId,
+                  ),
+                ),
+              )
+            : null,
         body: Center(
           child: SizedBox(
             width: MediaQuery.of(context).size.width * 0.9,
@@ -117,6 +154,21 @@ class _CollectionPageState extends State<CollectionPage> {
           onPressed: onAddButtonPressed,
           child: Icon(selectedMapsLink != null ? Icons.save : Icons.add),
         ),
+      ),
     );
   }
+
+  void onCancelSelectionPressed() => deselectBookmark();
+
+  void onDeleteBookmarkPressed() {
+    Storage.deleteBookmarkById(
+      selectedBookmarkId,
+    ).whenComplete(() => setState(() {}));
+    deselectBookmark();
+  }
+
+  void deselectBookmark() {
+    selectedBookmarkId = -1;
+    setState(() {});
+  }
 }

lib/pages/collections_list_page.dart

@@ -9,6 +9,7 @@ import '../service/storage.dart';
 import '../widgets/create_bookmark_collection_dialog.dart';
 import 'collection_page.dart';
 import 'search_page.dart' show SearchPage;
+import 'settings_page.dart';
 
 class CollectionsListPage extends StatefulWidget {
   const CollectionsListPage({super.key});
@@ -86,7 +87,8 @@ class _CollectionsListPageState extends State<CollectionsListPage> {
     final collections = Storage.loadCollections();
     bookmarkCountMap = Storage.loadPerCollectionBookmarkCount();
     addingNewBookmark =
-        context.watch<SharedLinkProvider>().currentMapsLinkMetadata != null;
+        Provider.of<SharedLinkProvider>(context).currentMapsLinkMetadata !=
+        null;
     return Scaffold(
       appBar: AppBar(
         title: addingNewBookmark
@@ -95,15 +97,22 @@ class _CollectionsListPageState extends State<CollectionsListPage> {
         actions: [
           if (addingNewBookmark)
             TextButton(
-              onPressed: () =>
-                  context.read<SharedLinkProvider>().removeCurrentMapsLink(),
+              onPressed: () => Provider.of<SharedLinkProvider>(
+                context,
+                listen: false,
+              ).removeCurrentMapsLink(),
               child: Text(AppLocalizations.of(context)!.cancel),
             )
           else
             IconButton(
               onPressed: () =>
                   Navigator.of(context).pushNamed(SearchPage.routeName),
-              icon: Icon(Icons.search),
+              icon: Icon(Icons.search_rounded),
+            ),
+          IconButton(
+            onPressed: () =>
+                Navigator.of(context).pushNamed(SettingsPage.routeName),
+            icon: Icon(Icons.settings_rounded),
           ),
         ],
       ),

lib/pages/settings_page.dart

@@ -0,0 +1,191 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:permission_handler/permission_handler.dart';
+import 'package:provider/provider.dart';
+
+import '../l10n/app_localizations.dart';
+import '../service/notifying.dart';
+import '../service/permission_service.dart';
+import '../service/settings_provider.dart';
+import '../service/storage.dart';
+
+class SettingsPage extends StatefulWidget {
+  static const routeName = '/settings';
+  const SettingsPage({super.key});
+
+  @override
+  State<SettingsPage> createState() => _SettingsPageState();
+}
+
+class _SettingsPageState extends State<SettingsPage> {
+  bool storagePermissionIsGranted = false;
+  final tileSpacing = 16.0;
+
+  @override
+  void initState() {
+    PermissionService.storagePermissionStatus.then((value) {
+      storagePermissionIsGranted = value.isGranted;
+      if (context.mounted) setState(() {});
+    });
+    super.initState();
+  }
+
+  // TODO: Localize
+  @override
+  Widget build(BuildContext context) {
+    final titlePadding = Theme.of(context).listTileTheme.contentPadding!;
+    checkStoragePermission();
+    final alwaysExportEnabled = context
+        .watch<SettingsProvider>()
+        .settings
+        .alwaysExportEnabled;
+
+    return Scaffold(
+      appBar: AppBar(title: Text(AppLocalizations.of(context)!.settings)),
+      body: Center(
+        child: SizedBox(
+          width: MediaQuery.of(context).size.width * 0.9,
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Padding(
+                padding: titlePadding,
+                child: Text(
+                  AppLocalizations.of(context)!.appData,
+                  style: Theme.of(context).textTheme.titleLarge,
+                ),
+              ),
+              SizedBox(height: tileSpacing),
+              ListTile(
+                title: Text('Grant storage permisson'),
+                subtitle: storagePermissionIsGranted
+                    ? Text('Storage permission granted')
+                    : Text(
+                        'For app-data settings to work, you need to grant the app permissions to manage internal storage.',
+                      ),
+                onTap: () => PermissionService.requestStoragePermission
+                    .whenComplete(() => checkStoragePermission()),
+                trailing: Icon(Icons.arrow_forward_ios_rounded),
+                enabled: !storagePermissionIsGranted,
+              ),
+              SizedBox(height: tileSpacing),
+              ListTile(
+                title: Text(AppLocalizations.of(context)!.import),
+                subtitle: Text('Import app-data from a json file.'),
+                onTap: () => onJsonImportPressed(),
+                trailing: Icon(Icons.arrow_forward_ios_rounded),
+                enabled: storagePermissionIsGranted,
+              ),
+              SizedBox(height: tileSpacing),
+              ListTile(
+                title: Text(AppLocalizations.of(context)!.export),
+                subtitle: Text(
+                  'Export app-data to a json file in the selected directory.',
+                ),
+                onTap: () => onJsonExportPressed(),
+                trailing: Icon(Icons.arrow_forward_ios_rounded),
+                enabled: storagePermissionIsGranted,
+              ),
+              SizedBox(height: tileSpacing),
+              ListTile(
+                title: Text('Always save to file'),
+                subtitle: Text(
+                  'Export app data to a directory, every time you make a change',
+                ),
+                onTap: () => onAlwaysSaveToJsonPressed(),
+                trailing: Checkbox(
+                  value: alwaysExportEnabled,
+                  onChanged: (value) {
+                    onAlwaysSaveToJsonPressed();
+                  },
+                ),
+                enabled: storagePermissionIsGranted,
+              ),
+              if (alwaysExportEnabled) SizedBox(height: tileSpacing),
+              if (alwaysExportEnabled)
+                ListTile(
+                  title: Text('Change export directory'),
+                  subtitle: Text(
+                    context
+                        .watch<SettingsProvider>()
+                        .settings
+                        .exportDirectoryPath,
+                  ),
+                  onTap: () => onChangeExportDirectoryPressed(),
+                  trailing: Icon(Icons.arrow_forward_ios_rounded),
+                  enabled: storagePermissionIsGranted,
+                ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  void onJsonExportPressed() async {
+    if (!await checkStoragePermission()) return;
+    Storage.exportToJsonFile().then(showExportInfo);
+  }
+
+  void onJsonImportPressed() async {
+    if (!await checkStoragePermission()) return;
+    Storage.importFromJsonFile().then(showImportInfo);
+  }
+
+  void onAlwaysSaveToJsonPressed() async {
+    if (context.read<SettingsProvider>().settings.alwaysExportEnabled) {
+      context.read<SettingsProvider>().setExportDirectoryPath('', silent: true);
+      context.read<SettingsProvider>().setAlwaysExportEnabled(false);
+      return;
+    }
+
+    if (!await PermissionService.storagePermissionStatus.isGranted) return;
+    final dir = await Storage.selectDirectoryPath();
+    if (dir.isEmpty || !context.mounted) return;
+
+    // ignore: use_build_context_synchronously
+    context.read<SettingsProvider>().setExportDirectoryPath(dir, silent: true);
+
+    // ignore: use_build_context_synchronously
+    Storage.saveDataToFile().whenComplete(
+      // ignore: use_build_context_synchronously
+      () => context.read<SettingsProvider>().setAlwaysExportEnabled(true),
+    );
+  }
+
+  void onChangeExportDirectoryPressed() async {
+    if (!await PermissionService.storagePermissionStatus.isGranted) return;
+    final dir = await Storage.selectDirectoryPath();
+    if (dir.isEmpty || !context.mounted) return;
+
+    // ignore: use_build_context_synchronously
+    context.read<SettingsProvider>().setExportDirectoryPath(dir);
+  }
+
+  Future<bool> checkStoragePermission() async {
+    PermissionService.storagePermissionStatus.then((value) {
+      if (context.mounted && value.isGranted != storagePermissionIsGranted) {
+        storagePermissionIsGranted = value.isGranted;
+        setState(() {});
+      }
+    });
+    return storagePermissionIsGranted;
+  }
+
+  void showExportInfo(bool success) => Notifying.showSnackbar(
+    context,
+    text: success
+        ? AppLocalizations.of(context)!.exportSuccess
+        : AppLocalizations.of(context)!.exportFailed,
+    isError: !success,
+  );
+
+  void showImportInfo(bool success) => Notifying.showSnackbar(
+    context,
+    text: success
+        ? AppLocalizations.of(context)!.importSuccess
+        : AppLocalizations.of(context)!.importFailed,
+    isError: !success,
+  );
+}

lib/service/json_file_service.dart

@@ -0,0 +1,90 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:file_selector/file_selector.dart';
+import 'package:flutter/services.dart';
+
+import '../model/bookmark.dart';
+import '../model/collection.dart';
+import '../assets/constants.dart' as constants;
+
+class JsonFileService {
+  static Future<bool> exportToJson({
+    required List<Collection> collections,
+    required List<Bookmark> bookmarks,
+  }) async {
+    try {
+      final dir = await selectDirectoryPath();
+      if (dir.isEmpty) return false;
+
+      saveDataToFile(collections, bookmarks, dir);
+    } catch (e) {
+      return false;
+    }
+    return true;
+  }
+
+  static Future<({List<Collection> collections, List<Bookmark> bookmarks})>
+  importFromJson() async {
+    try {
+      const typeGroup = XTypeGroup(label: 'json', extensions: <String>['json']);
+      final XFile? file = await openFile(
+        acceptedTypeGroups: <XTypeGroup>[typeGroup],
+      );
+
+      if (file == null) {
+        return (collections: <Collection>[], bookmarks: <Bookmark>[]);
+      }
+
+      final jsonString = await file.readAsString();
+
+      final data = jsonDecode(jsonString) as Map<String, dynamic>;
+
+      final collections = (data['collections'] as List<dynamic>? ?? [])
+          .map((json) => Collection.fromJson(json as Map<String, dynamic>))
+          .toList();
+
+      final bookmarks = (data['bookmarks'] as List<dynamic>? ?? [])
+          .map((json) => Bookmark.fromJson(json as Map<String, dynamic>))
+          .toList();
+
+      return (collections: collections, bookmarks: bookmarks);
+    } catch (e) {
+      return (collections: <Collection>[], bookmarks: <Bookmark>[]);
+    }
+  }
+
+  static Future<bool> saveDataToFile(
+    List<Collection> collections,
+    List<Bookmark> bookmarks,
+    String directory,
+  ) async {
+    try {
+      final data = jsonEncode({
+        'collections': collections.map((c) => c.toJson()).toList(),
+        'bookmarks': bookmarks.map((b) => b.toJson()).toList(),
+      }).codeUnits;
+
+      final file = XFile.fromData(
+        Uint8List.fromList(data),
+        mimeType: 'application/json',
+        name: constants.jsonFileName,
+      );
+
+      file.saveTo('$directory/${constants.jsonFileName}');
+    } catch (e) {
+      return false;
+    }
+    return true;
+  }
+
+  static Future<String> selectDirectoryPath() async {
+    if (Platform.isAndroid) {
+      return await getDirectoryPath(
+            initialDirectory: constants.defaultAndroidExportDirectory,
+          ) ??
+          '';
+    }
+    return await getDirectoryPath() ?? '';
+  }
+}

lib/service/maps_launcher_service.dart

@@ -1,15 +1,9 @@
-// service/maps_launcher_service.dart
 import 'dart:io' show Platform;
 import 'package:android_intent_plus/android_intent.dart';
 
 class MapsLauncherService {
-  /// Opens a URL in Google Maps app
-  /// Falls back to browser if Maps app is not installed
   static Future<bool> openInGoogleMaps(String url) async {
-    if (!Platform.isAndroid) {
-      // Handle iOS or other platforms if needed
-      return false;
-    }
+    if (!Platform.isAndroid) return false;
 
     try {
       // Try to open in Google Maps app
@@ -28,36 +22,16 @@ class MapsLauncherService {
         await browserIntent.launch();
         return true;
       } catch (e) {
-        print('Failed to open maps link: $e');
         return false;
       }
     }
   }
 
-  /// Opens navigation to specific coordinates
-  static Future<bool> navigateToCoordinates(
-    String latitude,
-    String longitude,
-  ) async {
-    final url = 'google.navigation:q=$latitude,$longitude';
-    return openInGoogleMaps(url);
-  }
-
-  /// Opens a search query in Google Maps
-  static Future<bool> searchInMaps(String query) async {
-    final encodedQuery = Uri.encodeComponent(query);
-    final url = 'geo:0,0?q=$encodedQuery';
-    return openInGoogleMaps(url);
-  }
-
-  /// Shares a Google Maps link or location via Android share sheet
   static Future<bool> shareLocation({
     required String text,
     String? subject,
   }) async {
-    if (!Platform.isAndroid) {
-      return false;
-    }
+    if (!Platform.isAndroid) return false;
 
     try {
       final intent = AndroidIntent(
@@ -72,7 +46,6 @@ class MapsLauncherService {
       await intent.launch();
       return true;
     } catch (e) {
-      print('Failed to share location: $e');
       return false;
     }
   }

lib/service/notifying.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 
+import '../l10n/app_localizations.dart';
 import 'url_launcher.dart' show UrlLaunchErrorCode;
 
 class Notifying {
@@ -11,7 +12,7 @@ class Notifying {
     ScaffoldMessenger.of(context).hideCurrentSnackBar();
     ScaffoldMessenger.of(context).showSnackBar(
       SnackBar(
-        backgroundColor: Theme.of(context).colorScheme.error,
+        backgroundColor: isError ? Theme.of(context).colorScheme.error : null,
         content: SizedBox(
           height: 30,
           child: Row(
@@ -28,7 +29,7 @@ class Notifying {
                     ScaffoldMessenger.of(context).hideCurrentSnackBar(),
                 icon: Icon(
                   Icons.close_rounded,
-                  color: Theme.of(context).colorScheme.onError,
+                  color: isError ? Theme.of(context).colorScheme.onError : null,
                 ),
               ),
             ],
@@ -46,10 +47,18 @@ class Notifying {
     if (errorCode == UrlLaunchErrorCode.none) {
       return;
     } else if (errorCode == UrlLaunchErrorCode.couldNotLaunch) {
-      errorText = 'Could not launch Url';
+      errorText = AppLocalizations.of(context)!.errorCouldNotLaunchUrl;
     } else {
-      errorText = 'Invalid Url';
+      errorText = AppLocalizations.of(context)!.errorInvalidUrl;
     }
     showSnackbar(context, text: errorText, isError: true);
   }
+
+  static void showErrorSnackbar(BuildContext context, String message) {
+    showSnackbar(context, text: message, isError: true);
+  }
+
+  static void showMessageSnackbar(BuildContext context, String message) {
+    showSnackbar(context, text: message, isError: false);
+  }
 }

lib/service/permission_service.dart

@@ -0,0 +1,9 @@
+import 'package:permission_handler/permission_handler.dart';
+
+class PermissionService {
+  static Future<PermissionStatus> get storagePermissionStatus =>
+      Permission.manageExternalStorage.status;
+
+  static Future<PermissionStatus> get requestStoragePermission =>
+      Permission.manageExternalStorage.request();
+}

lib/service/settings_provider.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+import '../model/settings.dart';
+import 'storage.dart';
+
+class SettingsProvider extends ChangeNotifier {
+  SettingsProvider() : _settings = Storage.loadSettings();
+
+  Settings _settings;
+
+  Settings get settings => _settings;
+
+  void setExportDirectoryPath(String path, {bool silent = false}) {
+    _settings = _settings.copyWith(exportDirectoryPath: path);
+    Storage.saveSettings(_settings);
+    if (!silent) notifyListeners();
+  }
+
+  void setAlwaysExportEnabled(bool enabled, {bool silent = false}) {
+    _settings = _settings.copyWith(alwaysExportEnabled: enabled);
+    Storage.saveSettings(_settings);
+    if (!silent) notifyListeners();
+  }
+}

lib/service/storage.dart

@@ -4,21 +4,49 @@ import 'package:shared_preferences/shared_preferences.dart';
 
 import '../model/bookmark.dart';
 import '../model/collection.dart';
+import '../model/settings.dart';
+import 'json_file_service.dart';
 
 class Storage {
   static const String _bookmarksKey = 'bookmarks';
   static const String _collectionsKey = 'collections';
   static SharedPreferencesWithCache? _prefsWithCache;
+  static const String _settingsKey = 'settings';
   static const String _statsKey = 'stats';
+  static Settings _currentSettings = Settings.defaults();
 
   static Future<void> initialize() async {
     _prefsWithCache = await SharedPreferencesWithCache.create(
       cacheOptions: const SharedPreferencesWithCacheOptions(
-        allowList: <String>{_collectionsKey, _bookmarksKey, _statsKey},
+        allowList: <String>{
+          _collectionsKey,
+          _bookmarksKey,
+          _statsKey,
+          _settingsKey,
+        },
       ),
     );
   }
 
+  static Settings loadSettings() {
+    final jsonString = _prefs.getString(_settingsKey);
+    if (jsonString != null) {
+      final json = jsonDecode(jsonString) as Map<String, dynamic>;
+      _currentSettings = Settings.fromJson(json);
+      return _currentSettings;
+    } else {
+      final settings = Settings.defaults();
+      saveSettings(settings);
+      return settings;
+    }
+  }
+
+  static Future<void> saveSettings(Settings settings) {
+    final json = jsonEncode(settings.toJson());
+    _currentSettings = settings;
+    return _prefs.setString(_settingsKey, json);
+  }
+
   static List<Collection> loadCollections() {
     final jsonString = _prefs.getString(_collectionsKey) ?? '[]';
     final jsonList = jsonDecode(jsonString) as List;
@@ -38,11 +66,13 @@ class Storage {
   static Future<void> saveCollections(List<Collection> collections) async {
     final jsonList = collections.map((c) => c.toJson()).toList();
     await _prefs.setString(_collectionsKey, jsonEncode(jsonList));
+    if (_currentSettings.alwaysExportEnabled) saveDataToFile();
   }
 
   static Future<void> saveBookmarks(List<Bookmark> bookmarks) async {
     final jsonList = bookmarks.map((b) => b.toJson()).toList();
     await _prefs.setString(_bookmarksKey, jsonEncode(jsonList));
+    if (_currentSettings.alwaysExportEnabled) saveDataToFile();
   }
 
   static List<Bookmark> loadBookmarksForCollection(int collectionId) {
@@ -155,6 +185,31 @@ class Storage {
     await _prefs.setString(_statsKey, jsonEncode(stats));
   }
 
+  static Future<bool> exportToJsonFile() => JsonFileService.exportToJson(
+    collections: loadCollections(),
+    bookmarks: loadBookmarks(),
+  );
+
+  static Future<bool> importFromJsonFile() async {
+    final import = await JsonFileService.importFromJson();
+
+    if (import.bookmarks.isNotEmpty || import.collections.isNotEmpty) {
+      saveBookmarks(import.bookmarks);
+      saveCollections(import.collections);
+      return true;
+    }
+    return false;
+  }
+
+  static Future<String> selectDirectoryPath() =>
+      JsonFileService.selectDirectoryPath();
+
+  static Future<bool> saveDataToFile() => JsonFileService.saveDataToFile(
+    loadCollections(),
+    loadBookmarks(),
+    _currentSettings.exportDirectoryPath,
+  );
+
   static SharedPreferencesWithCache get _prefs {
     if (_prefsWithCache == null) {
       throw StateError(

lib/theme.dart

@@ -22,5 +22,9 @@ ThemeData _baseTheme(ColorScheme scheme) =>
         shape: RoundedRectangleBorder(
           borderRadius: BorderRadiusGeometry.circular(12),
         ),
+        textColor: scheme.onPrimaryContainer,
+        selectedTileColor: scheme.primaryContainer,
+        selectedColor: scheme.onPrimaryContainer,
+        contentPadding: EdgeInsetsDirectional.only(start: 16.0, end: 24.0),
       ),
     );

lib/widgets/collection_page_widgets/list_item_actions_widget.dart

@@ -0,0 +1,53 @@
+import 'package:flutter/material.dart';
+
+class ListItemActionsWidget extends StatelessWidget {
+  final VoidCallback _onDeletePressed;
+  final VoidCallback _onCancelPressed;
+  final VoidCallback _onEditPressed;
+
+  const ListItemActionsWidget({
+    super.key,
+    required void Function() onDeletePressed,
+    required void Function() onCancelPressed,
+    required void Function() onEditPressed,
+  }) : _onEditPressed = onEditPressed,
+       _onCancelPressed = onCancelPressed,
+       _onDeletePressed = onDeletePressed;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      padding: EdgeInsetsGeometry.fromLTRB(
+        10,
+        10,
+        10,
+        MediaQuery.of(context).viewPadding.bottom,
+      ),
+      color: Theme.of(context).colorScheme.surfaceContainer,
+      child: Row(
+        mainAxisAlignment: MainAxisAlignment.spaceBetween,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          IconButton(
+            onPressed: _onCancelPressed,
+            icon: const Icon(Icons.close_rounded),
+          ),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.end,
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              IconButton(
+                onPressed: _onDeletePressed,
+                icon: const Icon(Icons.delete_forever_rounded),
+              ),
+              IconButton(
+                onPressed: _onEditPressed,
+                icon: const Icon(Icons.edit_rounded),
+              ),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/widgets/edit_dialog_widgets/edit_dialog_title.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart' show TextButton, Theme;
 import 'package:flutter/widgets.dart';
 
+import '../../l10n/app_localizations.dart';
+
 class EditDialogTitle extends StatelessWidget {
   const EditDialogTitle({
     super.key,
@@ -15,11 +17,10 @@ class EditDialogTitle extends StatelessWidget {
     return Row(
       mainAxisAlignment: MainAxisAlignment.spaceBetween,
       children: [
-        // TODO: Localize
         if (dialogType == DialogType.bookmark)
-          Text('Create Bookmark')
+          Text(AppLocalizations.of(context)!.createBookmark)
         else
-          Text('Create Collection'),
+          Text(AppLocalizations.of(context)!.createCollection),
 
         if (onDeletePressed != null)
           TextButton(
@@ -28,7 +29,7 @@ class EditDialogTitle extends StatelessWidget {
               Navigator.of(context).pop();
             },
             child: Text(
-              'Delete',
+              AppLocalizations.of(context)!.delete,
               style: TextStyle(color: Theme.of(context).colorScheme.error),
             ),
           ),

pubspec.lock

@@ -49,6 +49,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.19.1"
+  cross_file:
+    dependency: transitive
+    description:
+      name: cross_file
+      sha256: "701dcfc06da0882883a2657c445103380e53e647060ad8d9dfb710c100996608"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.5+1"
   csslib:
     dependency: transitive
     description:
@@ -89,6 +97,70 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.1"
+  file_selector:
+    dependency: "direct main"
+    description:
+      name: file_selector
+      sha256: bd15e43e9268db636b53eeaca9f56324d1622af30e5c34d6e267649758c84d9a
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  file_selector_android:
+    dependency: transitive
+    description:
+      name: file_selector_android
+      sha256: "51e8fd0446de75e4b62c065b76db2210c704562d072339d333bd89c57a7f8a7c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.2+4"
+  file_selector_ios:
+    dependency: transitive
+    description:
+      name: file_selector_ios
+      sha256: e2ecf2885c121691ce13b60db3508f53c01f869fb6e8dc5c1cfa771e4c46aeca
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.3+5"
+  file_selector_linux:
+    dependency: transitive
+    description:
+      name: file_selector_linux
+      sha256: "2567f398e06ac72dcf2e98a0c95df2a9edd03c2c2e0cacd4780f20cdf56263a0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4"
+  file_selector_macos:
+    dependency: transitive
+    description:
+      name: file_selector_macos
+      sha256: "5e0bbe9c312416f1787a68259ea1505b52f258c587f12920422671807c4d618a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.5"
+  file_selector_platform_interface:
+    dependency: transitive
+    description:
+      name: file_selector_platform_interface
+      sha256: "35e0bd61ebcdb91a3505813b055b09b79dfdc7d0aee9c09a7ba59ae4bb13dc85"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  file_selector_web:
+    dependency: transitive
+    description:
+      name: file_selector_web
+      sha256: c4c0ea4224d97a60a7067eca0c8fd419e708ff830e0c83b11a48faf566cec3e7
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4+2"
+  file_selector_windows:
+    dependency: transitive
+    description:
+      name: file_selector_windows
+      sha256: "62197474ae75893a62df75939c777763d39c2bc5f73ce5b88497208bc269abfd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.3+5"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -253,6 +325,54 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.0"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      sha256: bc917da36261b00137bbc8896bf1482169cd76f866282368948f032c8c1caae1
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.0.1"
+  permission_handler_android:
+    dependency: transitive
+    description:
+      name: permission_handler_android
+      sha256: "1e3bc410ca1bf84662104b100eb126e066cb55791b7451307f9708d4007350e6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "13.0.1"
+  permission_handler_apple:
+    dependency: transitive
+    description:
+      name: permission_handler_apple
+      sha256: f000131e755c54cf4d84a5d8bd6e4149e262cc31c5a8b1d698de1ac85fa41023
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.4.7"
+  permission_handler_html:
+    dependency: transitive
+    description:
+      name: permission_handler_html
+      sha256: "38f000e83355abb3392140f6bc3030660cfaef189e1f87824facb76300b4ff24"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.3+5"
+  permission_handler_platform_interface:
+    dependency: transitive
+    description:
+      name: permission_handler_platform_interface
+      sha256: eb99b295153abce5d683cac8c02e22faab63e50679b937fa1bf67d58bb282878
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.3.0"
+  permission_handler_windows:
+    dependency: transitive
+    description:
+      name: permission_handler_windows
+      sha256: "1a790728016f79a41216d88672dbc5df30e686e811ad4e698bfc51f76ad91f1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.1"
   platform:
     dependency: transitive
     description:
@@ -499,5 +619,5 @@ packages:
     source: hosted
     version: "1.1.0"
 sdks:
-  dart: ">=3.9.2 <4.0.0"
-  flutter: ">=3.35.0"
+  dart: ">=3.10.0 <4.0.0"
+  flutter: ">=3.38.0"

pubspec.yaml

@@ -21,6 +21,8 @@ dependencies:
   flutter_localizations:
     sdk: flutter
   intl: any
+  permission_handler: ^12.0.1
+  file_selector: ^1.1.0
 
 dev_dependencies:
   flutter_test: