ui: Display ControllerPopover in DisplayHeaderBar

https://bugzilla.gnome.org/show_bug.cgi?id=780756

data/ui/display-header-bar.ui

@@ -92,5 +92,30 @@
         <property name="pack-type">end</property>
       </packing>
     </child>
+    <child>
+      <object class="GtkMenuButton" id="controller_button">
+        <property name="visible">True</property>
+        <property name="valign">center</property>
+        <property name="use-underline">True</property>
+        <style>
+          <class name="image-button"/>
+        </style>
+        <child internal-child="accessible">
+          <object class="AtkObject" id="a11y-controller">
+            <property name="accessible-name" translatable="yes">controller</property>
+          </object>
+        </child>
+        <child>
+          <object class="GtkImage" id="controller_image">
+            <property name="visible">True</property>
+            <property name="icon-name">input-gaming-symbolic</property>
+            <property name="icon-size">1</property>
+          </object>
+        </child>
+      </object>
+      <packing>
+        <property name="pack-type">end</property>
+      </packing>
+    </child>
   </template>
 </interface>

src/ui/application-window.vala

@@ -254,6 +254,8 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
 		display_box.runner = runner;
 		display_header_bar.media_set = runner.media_set;
 		display_box.header_bar.media_set = runner.media_set;
+		display_header_bar.controller_set = runner.controller_set;
+		display_box.header_bar.controller_set = runner.controller_set;
 
 		is_fullscreen = settings.get_boolean ("fullscreen") && runner.can_fullscreen;
 

src/ui/display-header-bar.vala

@@ -6,6 +6,8 @@ private class Games.DisplayHeaderBar : Gtk.HeaderBar {
 
 	[GtkChild]
 	private MediaMenuButton media_button;
+	[GtkChild]
+	private Gtk.MenuButton controller_button;
 
 	public string game_title {
 		set { title = value; }
@@ -21,7 +23,15 @@ private class Games.DisplayHeaderBar : Gtk.HeaderBar {
 		}
 	}
 
+	public ControllerSet? controller_set {
+		set {
+			controller_popover.controller_set = value;
+			controller_button.visible = value != null;
+		}
+	}
+
 	private MediaSelector media_selector;
+	private ControllerPopover controller_popover;
 
 	[GtkChild]
 	private Gtk.Button fullscreen;
@@ -34,6 +44,10 @@ private class Games.DisplayHeaderBar : Gtk.HeaderBar {
 	construct {
 		settings = new Settings ("org.gnome.Games");
 
+		controller_popover = new ControllerPopover ();
+		controller_popover.set_relative_to (controller_button);
+		controller_button.set_popover (controller_popover);
+
 		media_selector = new MediaSelector ();
 		media_selector.set_relative_to (media_button);
 		media_button.set_popover (media_selector);