[metacity] theme-viewer: disable sidebar while theme is not selected

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 29cdac3badc60463e55f4964bf9be73d20ed747c
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Feb 15 22:13:20 2016 +0200

    theme-viewer: disable sidebar while theme is not selected

 data/ui/theme-viewer-window.ui     |    2 +-
 theme-viewer/theme-viewer-window.c |    8 ++++++++
 2 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/data/ui/theme-viewer-window.ui b/data/ui/theme-viewer-window.ui
index f7ba200..0c510b1 100644
--- a/data/ui/theme-viewer-window.ui
+++ b/data/ui/theme-viewer-window.ui
@@ -21,7 +21,7 @@
                 <property name="can_focus">False</property>
                 <property name="shadow_type">none</property>
                 <child>
-                  <object class="GtkBox">
+                  <object class="GtkBox" id="sidebar">
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <property name="border_width">12</property>
diff --git a/theme-viewer/theme-viewer-window.c b/theme-viewer/theme-viewer-window.c
index 321fd5f..f4f2ed6 100644
--- a/theme-viewer/theme-viewer-window.c
+++ b/theme-viewer/theme-viewer-window.c
@@ -35,6 +35,8 @@ struct _ThemeViewerWindow
   GtkWidget        *theme_combo_box;
   GtkWidget        *reload_button;
 
+  GtkWidget        *sidebar;
+
   GtkWidget        *choose_theme;
   GtkWidget        *theme_box;
 
@@ -337,6 +339,8 @@ clear_theme (ThemeViewerWindow *window)
   gtk_widget_show (window->choose_theme);
   gtk_widget_hide (window->theme_box);
 
+  gtk_widget_set_sensitive (window->sidebar, FALSE);
+
   g_clear_object (&window->theme);
 }
 
@@ -531,6 +535,8 @@ theme_combo_box_changed_cb (GtkComboBox       *combo_box,
   gtk_widget_hide (window->choose_theme);
   gtk_widget_show (window->theme_box);
 
+  gtk_widget_set_sensitive (window->sidebar, TRUE);
+
   if (type == META_THEME_TYPE_METACITY)
      gtk_widget_set_sensitive (window->reload_button, TRUE);
 }
@@ -706,6 +712,8 @@ theme_viewer_window_class_init (ThemeViewerWindowClass *window_class)
   gtk_widget_class_bind_template_child (widget_class, ThemeViewerWindow, reload_button);
   gtk_widget_class_bind_template_callback (widget_class, reload_button_clicked_cb);
 
+  gtk_widget_class_bind_template_child (widget_class, ThemeViewerWindow, sidebar);
+
   gtk_widget_class_bind_template_child (widget_class, ThemeViewerWindow, choose_theme);
 
   gtk_widget_class_bind_template_child (widget_class, ThemeViewerWindow, theme_box);