Introduce YaruWindowTitleBar & YaruDialogTitleBar

example/lib/code_snippet_button.dart

@@ -58,9 +58,8 @@ class _CodeDialog extends StatelessWidget {
 
     return AlertDialog(
       titlePadding: EdgeInsets.zero,
-      title: YaruTitleBar(
+      title: YaruDialogTitleBar(
         title: Text(!model.appIsOnline ? 'Offline' : pageItem.tooltipMessage),
-        trailing: const YaruCloseButton(),
         leading: !model.appIsOnline
             ? null
             : Center(

example/lib/example.dart

@@ -127,7 +127,7 @@ Future<void> showSettingsDialog(BuildContext context) {
         animation: model,
         builder: (context, child) {
           return AlertDialog(
-            title: const YaruTitleBar(
+            title: const YaruDialogTitleBar(
               title: Text('Settings'),
             ),
             titlePadding: EdgeInsets.zero,

example/lib/main.dart

@@ -3,11 +3,14 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:ubuntu_service/ubuntu_service.dart';
 import 'package:yaru/yaru.dart';
+import 'package:yaru_widgets/yaru_widgets.dart';
 
 import 'example.dart';
 import 'theme.dart';
 
-void main() {
+Future<void> main() async {
+  await YaruWindowTitleBar.ensureInitialized();
+
   registerService<Connectivity>(Connectivity.new);
   runApp(
     MultiProvider(
@@ -30,7 +33,10 @@ class Home extends StatelessWidget {
       debugShowCheckedModeBanner: false,
       theme: context.watch<LightTheme>().value,
       darkTheme: context.watch<DarkTheme>().value,
-      home: Example.create(context),
+      home: Scaffold(
+        appBar: const YaruWindowTitleBar(),
+        body: Example.create(context),
+      ),
     );
   }
 }

example/lib/pages/banner_page.dart

@@ -82,7 +82,7 @@ class _BannerState extends State<_Banner> {
         builder: (context) => SimpleDialog(
           titlePadding: EdgeInsets.zero,
           contentPadding: const EdgeInsets.all(10),
-          title: YaruTitleBar(
+          title: YaruDialogTitleBar(
             title: title,
           ),
           children: [

example/lib/pages/dialog_page.dart

@@ -39,7 +39,7 @@ class _DialogPageState extends State<DialogPage> {
                           )
                       ],
                       titlePadding: EdgeInsets.zero,
-                      title: YaruTitleBar(
+                      title: YaruDialogTitleBar(
                         leading: const Center(
                           child: SizedBox.square(
                             dimension: 25,
@@ -49,7 +49,7 @@ class _DialogPageState extends State<DialogPage> {
                           ),
                         ),
                         title: const Text('The Title'),
-                        trailing: YaruCloseButton(enabled: isCloseable),
+                        isClosable: isCloseable,
                       ),
                       content: SizedBox(
                         height: 100,

example/linux/flutter/generated_plugin_registrant.cc

@@ -7,12 +7,20 @@
 #include "generated_plugin_registrant.h"
 
 #include <handy_window/handy_window_plugin.h>
+#include <screen_retriever/screen_retriever_plugin.h>
+#include <window_manager/window_manager_plugin.h>
 #include <yaru/yaru_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) handy_window_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "HandyWindowPlugin");
   handy_window_plugin_register_with_registrar(handy_window_registrar);
+  g_autoptr(FlPluginRegistrar) screen_retriever_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "ScreenRetrieverPlugin");
+  screen_retriever_plugin_register_with_registrar(screen_retriever_registrar);
+  g_autoptr(FlPluginRegistrar) window_manager_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "WindowManagerPlugin");
+  window_manager_plugin_register_with_registrar(window_manager_registrar);
   g_autoptr(FlPluginRegistrar) yaru_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "YaruPlugin");
   yaru_plugin_register_with_registrar(yaru_registrar);

example/linux/flutter/generated_plugins.cmake

@@ -4,6 +4,8 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   handy_window
+  screen_retriever
+  window_manager
   yaru
 )