accounts ui: Offer Flutter's [LicensePage], to acknowledge software used by the app

ios/Podfile.lock

@@ -40,6 +40,8 @@ PODS:
   - Flutter (1.0.0)
   - image_picker_ios (0.0.1):
     - Flutter
+  - package_info_plus (0.4.5):
+    - Flutter
   - path_provider_foundation (0.0.1):
     - Flutter
     - FlutterMacOS
@@ -71,6 +73,7 @@ DEPENDENCIES:
   - file_picker (from `.symlinks/plugins/file_picker/ios`)
   - Flutter (from `Flutter`)
   - image_picker_ios (from `.symlinks/plugins/image_picker_ios/ios`)
+  - package_info_plus (from `.symlinks/plugins/package_info_plus/ios`)
   - path_provider_foundation (from `.symlinks/plugins/path_provider_foundation/darwin`)
   - share_plus (from `.symlinks/plugins/share_plus/ios`)
   - sqlite3_flutter_libs (from `.symlinks/plugins/sqlite3_flutter_libs/ios`)
@@ -94,6 +97,8 @@ EXTERNAL SOURCES:
     :path: Flutter
   image_picker_ios:
     :path: ".symlinks/plugins/image_picker_ios/ios"
+  package_info_plus:
+    :path: ".symlinks/plugins/package_info_plus/ios"
   path_provider_foundation:
     :path: ".symlinks/plugins/path_provider_foundation/darwin"
   share_plus:
@@ -109,6 +114,7 @@ SPEC CHECKSUMS:
   file_picker: ce3938a0df3cc1ef404671531facef740d03f920
   Flutter: f04841e97a9d0b0a8025694d0796dd46242b2854
   image_picker_ios: 4a8aadfbb6dc30ad5141a2ce3832af9214a705b5
+  package_info_plus: fd030dabf36271f146f1f3beacd48f564b0f17f7
   path_provider_foundation: c68054786f1b4f3343858c1e1d0caaded73f0be9
   SDWebImage: fd7e1a22f00303e058058278639bf6196ee431fe
   share_plus: 056a1e8ac890df3e33cb503afffaf1e9b4fbae68

lib/widgets/about_zulip.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+
+class AboutZulipPage extends StatefulWidget {
+  const AboutZulipPage({super.key});
+
+  static Route<void> buildRoute(BuildContext context) {
+    return MaterialPageRoute(builder: (context) => const AboutZulipPage());
+  }
+
+  @override
+  State<AboutZulipPage> createState() => _AboutZulipPageState();
+}
+
+class _AboutZulipPageState extends State<AboutZulipPage> {
+  PackageInfo? _packageInfo;
+
+  @override
+  void initState() {
+    super.initState();
+    (() async {
+      final result = await PackageInfo.fromPlatform();
+      setState(() {
+        _packageInfo = result;
+      });
+    })();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text("About Zulip")),
+      body: SingleChildScrollView(
+        child: SafeArea(
+          minimum: const EdgeInsets.all(8), // ListView pads vertical
+          child: Center(
+            child: ConstrainedBox(
+              constraints: const BoxConstraints(maxWidth: 400),
+              child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [
+                ListTile(
+                  title: const Text('App version'),
+                  subtitle: Text(_packageInfo?.version ?? '(…)')),
+                ListTile(
+                  title: const Text('Open-source licenses'),
+                  subtitle: const Text('Tap to view'),
+                  onTap: () {
+                    // TODO(upstream?): This route and its child routes (pushed
+                    //   when you tap a package to view its licenses) can't be
+                    //   popped on iOS with the swipe-away gesture; you have to
+                    //   tap the "Back" button. Debug/fix.
+                    showLicensePage(context: context);
+                  }),
+              ])))),
+      ));
+  }
+}

lib/widgets/app.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 
+import 'about_zulip.dart';
 import 'compose_box.dart';
 import 'login.dart';
 import 'message_list.dart';
@@ -57,22 +58,49 @@ class ChooseAccountPage extends StatelessWidget {
     assert(!PerAccountStoreWidget.debugExistsOf(context));
     final globalStore = GlobalStoreWidget.of(context);
     return Scaffold(
-      appBar: AppBar(title: const Text('Choose account')),
-      body: Center(
-        child: ConstrainedBox(
-          constraints: const BoxConstraints(maxWidth: 400),
-          child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [
-            for (final (:accountId, :account) in globalStore.accountEntries)
-              _buildAccountItem(context,
-                accountId: accountId,
-                title: Text(account.realmUrl.toString()),
-                subtitle: Text(account.email)),
-            const SizedBox(height: 12),
-            ElevatedButton(
-              onPressed: () => Navigator.push(context,
-                AddAccountPage.buildRoute()),
-              child: const Text('Add an account')),
-          ]))));
+      appBar: AppBar(
+        title: const Text('Choose account'),
+        actions: const [ChooseAccountPageOverflowButton()]),
+      body: SafeArea(
+        minimum: const EdgeInsets.all(8),
+        child: Center(
+          child: ConstrainedBox(
+            constraints: const BoxConstraints(maxWidth: 400),
+            child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [
+              for (final (:accountId, :account) in globalStore.accountEntries)
+                _buildAccountItem(context,
+                  accountId: accountId,
+                  title: Text(account.realmUrl.toString()),
+                  subtitle: Text(account.email)),
+              const SizedBox(height: 12),
+              ElevatedButton(
+                onPressed: () => Navigator.push(context,
+                  AddAccountPage.buildRoute()),
+                child: const Text('Add an account')),
+            ]))),
+      ));
+  }
+}
+
+enum ChooseAccountPageOverflowMenuItem { aboutZulip }
+
+class ChooseAccountPageOverflowButton extends StatelessWidget {
+  const ChooseAccountPageOverflowButton({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return PopupMenuButton<ChooseAccountPageOverflowMenuItem>(
+      itemBuilder: (BuildContext context) => const [
+        PopupMenuItem(
+          value: ChooseAccountPageOverflowMenuItem.aboutZulip,
+          child: Text('About Zulip')),
+      ],
+      onSelected: (item) {
+        switch (item) {
+          case ChooseAccountPageOverflowMenuItem.aboutZulip:
+            Navigator.push(context, AboutZulipPage.buildRoute(context));
+        }
+      });
   }
 }
 

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -6,12 +6,14 @@ import FlutterMacOS
 import Foundation
 
 import device_info_plus
+import package_info_plus
 import path_provider_foundation
 import share_plus
 import sqlite3_flutter_libs
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   DeviceInfoPlusMacosPlugin.register(with: registry.registrar(forPlugin: "DeviceInfoPlusMacosPlugin"))
+  FLTPackageInfoPlusPlugin.register(with: registry.registrar(forPlugin: "FLTPackageInfoPlusPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
   SharePlusMacosPlugin.register(with: registry.registrar(forPlugin: "SharePlusMacosPlugin"))
   Sqlite3FlutterLibsPlugin.register(with: registry.registrar(forPlugin: "Sqlite3FlutterLibsPlugin"))

macos/Podfile.lock

@@ -2,6 +2,8 @@ PODS:
   - device_info_plus (0.0.1):
     - FlutterMacOS
   - FlutterMacOS (1.0.0)
+  - package_info_plus (0.0.1):
+    - FlutterMacOS
   - path_provider_foundation (0.0.1):
     - Flutter
     - FlutterMacOS
@@ -26,6 +28,7 @@ PODS:
 DEPENDENCIES:
   - device_info_plus (from `Flutter/ephemeral/.symlinks/plugins/device_info_plus/macos`)
   - FlutterMacOS (from `Flutter/ephemeral`)
+  - package_info_plus (from `Flutter/ephemeral/.symlinks/plugins/package_info_plus/macos`)
   - path_provider_foundation (from `Flutter/ephemeral/.symlinks/plugins/path_provider_foundation/darwin`)
   - share_plus (from `Flutter/ephemeral/.symlinks/plugins/share_plus/macos`)
   - sqlite3_flutter_libs (from `Flutter/ephemeral/.symlinks/plugins/sqlite3_flutter_libs/macos`)
@@ -39,6 +42,8 @@ EXTERNAL SOURCES:
     :path: Flutter/ephemeral/.symlinks/plugins/device_info_plus/macos
   FlutterMacOS:
     :path: Flutter/ephemeral
+  package_info_plus:
+    :path: Flutter/ephemeral/.symlinks/plugins/package_info_plus/macos
   path_provider_foundation:
     :path: Flutter/ephemeral/.symlinks/plugins/path_provider_foundation/darwin
   share_plus:
@@ -49,6 +54,7 @@ EXTERNAL SOURCES:
 SPEC CHECKSUMS:
   device_info_plus: 5401765fde0b8d062a2f8eb65510fb17e77cf07f
   FlutterMacOS: 8f6f14fa908a6fb3fba0cd85dbd81ec4b251fb24
+  package_info_plus: 02d7a575e80f194102bef286361c6c326e4c29ce
   path_provider_foundation: c68054786f1b4f3343858c1e1d0caaded73f0be9
   share_plus: 76dd39142738f7a68dd57b05093b5e8193f220f7
   sqlite3: d31b2b69d59bd1b4ab30e5c92eb18fd8e82fa392

macos/Runner.xcodeproj/project.pbxproj

@@ -203,7 +203,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0920;
-				LastUpgradeCheck = 1300;
+				LastUpgradeCheck = 1430;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					33CC10EC2044A3C60003C045 = {

macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1300"
+   LastUpgradeVersion = "1430"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

macos/Runner/Info.plist

@@ -27,6 +27,6 @@
 	<key>NSMainNibFile</key>
 	<string>MainMenu</string>
 	<key>NSPrincipalClass</key>
-	<string>FlutterApplication</string>
+	<string>NSApplication</string>
 </dict>
 </plist>

pubspec.lock

@@ -544,6 +544,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.0"
+  package_info_plus:
+    dependency: "direct main"
+    description:
+      name: package_info_plus
+      sha256: "28386bbe89ab5a7919a47cea99cdd1128e5a6e0bbd7eaafe20440ead84a15de3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.1"
+  package_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: package_info_plus_platform_interface
+      sha256: "9bc8ba46813a4cc42c66ab781470711781940780fd8beddd0c3da62506d3a6c6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.1"
   path:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -54,6 +54,7 @@ dependencies:
   sqlite3_flutter_libs: ^0.5.13
   app_settings: ^4.2.0
   image_picker: ^0.8.7+3
+  package_info_plus: ^4.0.1
 
 dev_dependencies:
   flutter_test: