[gnome-software] Use gsettings to enable/disable the 'sources' action

[Joaquim Manuel Pereira Rocha <jrocha src gnome org>]

commit 043f89e94bc08b088b979eaf75b40e2f30e21d7e
Author: Joaquim Rocha <jrocha endlessm com>
Date:   Thu Mar 31 14:47:11 2016 +0200

    Use gsettings to enable/disable the 'sources' action
    
    This is useful for vendors who prefer not to have the software sources
    dialog enabled by default.

 data/org.gnome.software.gschema.xml |    4 ++++
 src/gs-application.c                |   34 +++++++++++++++++++++++++++++++++-
 2 files changed, 37 insertions(+), 1 deletions(-)
---
diff --git a/data/org.gnome.software.gschema.xml b/data/org.gnome.software.gschema.xml
index 6b6e8eb..ac6a0c6 100644
--- a/data/org.gnome.software.gschema.xml
+++ b/data/org.gnome.software.gschema.xml
@@ -62,5 +62,9 @@
       <default>true</default>
       <summary>Show the folder management UI</summary>
     </key>
+    <key name="enable-software-sources" type="b">
+      <default>true</default>
+      <summary>Allow access to the Software Sources dialog</summary>
+    </key>
   </schema>
 </schemalist>
diff --git a/src/gs-application.c b/src/gs-application.c
index bffb138..098f6d2 100644
--- a/src/gs-application.c
+++ b/src/gs-application.c
@@ -46,6 +46,7 @@
 #include "gs-folders.h"
 #include "gs-utils.h"
 
+#define ENABLE_SOFTWARE_SOURCES_CONF_KEY "enable-software-sources"
 
 struct _GsApplication {
        GtkApplication   parent;
@@ -656,8 +657,32 @@ static GActionEntry actions[] = {
 };
 
 static void
+gs_application_update_software_sources_presence (GApplication *self)
+{
+       GSimpleAction *action;
+       gboolean enable_sources;
+
+       action = G_SIMPLE_ACTION (g_action_map_lookup_action (G_ACTION_MAP (self),
+                                                             "sources"));
+       enable_sources = g_settings_get_boolean (GS_APPLICATION (self)->settings,
+                                                ENABLE_SOFTWARE_SOURCES_CONF_KEY);
+       g_simple_action_set_enabled (action, enable_sources);
+}
+
+static void
+gs_application_settings_changed_cb (GApplication *self,
+                                   const gchar *key,
+                                   gpointer data)
+{
+       if (g_strcmp0 (key, ENABLE_SOFTWARE_SOURCES_CONF_KEY) == 0) {
+               gs_application_update_software_sources_presence (self);
+       }
+}
+
+static void
 gs_application_startup (GApplication *application)
 {
+       GSettings *settings;
        G_APPLICATION_CLASS (gs_application_parent_class)->startup (application);
 
        g_action_map_add_action_entries (G_ACTION_MAP (application),
@@ -667,11 +692,18 @@ gs_application_startup (GApplication *application)
 #ifdef HAVE_PACKAGEKIT
        GS_APPLICATION (application)->dbus_helper = gs_dbus_helper_new ();
 #endif
-       GS_APPLICATION (application)->settings = g_settings_new ("org.gnome.software");
+       settings = g_settings_new ("org.gnome.software");
+       GS_APPLICATION (application)->settings = settings;
+       g_signal_connect_swapped (settings, "changed",
+                                 G_CALLBACK (gs_application_settings_changed_cb),
+                                 application);
+
        gs_application_monitor_permission (GS_APPLICATION (application));
        gs_application_monitor_updates (GS_APPLICATION (application));
        gs_application_monitor_network (GS_APPLICATION (application));
        gs_folders_convert ();
+
+       gs_application_update_software_sources_presence (application);
 }
 
 static void