[gnome-games/wip/sevagen/autohide: 2/4] nintendo-ds-layout-switcher: Implement HeaderBarWidget

[Alexander Mikhaylenko <alexm src gnome org>]

commit 4fbef2a648aaa3e1db391be7826af4f9ffa27b67
Author: sevagen <sevagenv gmail com>
Date:   Tue Feb 18 13:53:01 2020 +0530

    nintendo-ds-layout-switcher: Implement HeaderBarWidget

 .../nintendo-ds/data/ui/nintendo-ds-layout-switcher.ui    |  3 ++-
 plugins/nintendo-ds/src/nintendo-ds-layout-switcher.vala  | 15 ++++++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/plugins/nintendo-ds/data/ui/nintendo-ds-layout-switcher.ui 
b/plugins/nintendo-ds/data/ui/nintendo-ds-layout-switcher.ui
index 1e3c4880..47aec5ff 100644
--- a/plugins/nintendo-ds/data/ui/nintendo-ds-layout-switcher.ui
+++ b/plugins/nintendo-ds/data/ui/nintendo-ds-layout-switcher.ui
@@ -29,10 +29,11 @@
       </object>
     </child>
     <child>
-      <object class="GtkMenuButton">
+      <object class="GtkMenuButton" id="layout_button">
         <property name="visible">True</property>
         <property name="can-focus">False</property>
         <property name="popover">layout_popover</property>
+        <signal name="notify::active" handler="on_menu_state_changed"/>
           <child internal-child="accessible">
           <object class="AtkObject" id="a11y-display-discs">
             <property name="accessible-name" translatable="yes">Screen Layout</property>
diff --git a/plugins/nintendo-ds/src/nintendo-ds-layout-switcher.vala 
b/plugins/nintendo-ds/src/nintendo-ds-layout-switcher.vala
index 62eae1a0..9974cc64 100644
--- a/plugins/nintendo-ds/src/nintendo-ds-layout-switcher.vala
+++ b/plugins/nintendo-ds/src/nintendo-ds-layout-switcher.vala
@@ -1,12 +1,14 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
 [GtkTemplate (ui = "/org/gnome/Games/plugins/nintendo-ds/ui/nintendo-ds-layout-switcher.ui")]
-private class Games.NintendoDsLayoutSwitcher : Gtk.Box {
+private class Games.NintendoDsLayoutSwitcher : Gtk.Box, HeaderBarWidget {
        [GtkChild]
        private Gtk.Revealer change_screen_revealer;
        [GtkChild]
        private Gtk.Image change_screen_image;
        [GtkChild]
+       private Gtk.MenuButton layout_button;
+       [GtkChild]
        private Gtk.Image layout_image;
        [GtkChild]
        private Gtk.Popover layout_popover;
@@ -17,6 +19,11 @@ private class Games.NintendoDsLayoutSwitcher : Gtk.Box {
 
        public NintendoDsRunner runner { get; construct; }
 
+       private bool is_menu_open;
+       public bool block_autohide {
+               get { return is_menu_open; }
+       }
+
        static construct {
                var icon_theme = Gtk.IconTheme.get_default ();
                icon_theme.add_resource_path ("/org/gnome/Games/plugins/nintendo-ds/icons");
@@ -43,6 +50,12 @@ private class Games.NintendoDsLayoutSwitcher : Gtk.Box {
                Object (runner: runner);
        }
 
+       [GtkCallback]
+       private void on_menu_state_changed () {
+               is_menu_open = layout_button.active;
+               notify_property ("block-autohide");
+       }
+
        [GtkCallback]
        private void update_ui () {
                var layout = runner.screen_layout;