[mate-bg] add 2 new gsettings functions

Because of the need to use now in Caja:
Add mate_bg_load_from_system_gsettings() and mate_bg_save_to_gsettings(),
making mate_bg_load_from_system_preferences() and mate_bg_save_to_preferences()
wrappers around them, respectively.

Both new funcs take GSettings argument, and the latter takes a boolean argument,
to optionally apply the reset-to-schema-defaults settings. This will be used for
desktop background reset-drop.

2 files changed, 44 insertions, 10 deletions

diff --git a/libmate-desktop/libmateui/mate-bg.h b/libmate-desktop/libmateui/mate-bg.h
index aa557a5..8fbc230 100644
--- a/libmate-desktop/libmateui/mate-bg.h
+++ b/libmate-desktop/libmateui/mate-bg.h
@@ -68,10 +68,16 @@ typedef enum {
 GType            mate_bg_get_type              (void);
 MateBG *         mate_bg_new                   (void);
 void             mate_bg_load_from_preferences (MateBG               *bg);
-void             mate_bg_load_from_system_preferences (MateBG        *bg);
+void             mate_bg_load_from_system_preferences  (MateBG       *bg);
+void             mate_bg_load_from_system_gsettings    (MateBG       *bg,
+							GSettings    *settings,
+							gboolean      reset_apply);
 void             mate_bg_load_from_gsettings   (MateBG               *bg,
 						GSettings            *settings);
 void             mate_bg_save_to_preferences   (MateBG               *bg);
+void             mate_bg_save_to_gsettings     (MateBG               *bg,
+						GSettings            *settings);
+
 /* Setters */
 void             mate_bg_set_filename          (MateBG               *bg,
 						 const char            *filename);
diff --git a/libmate-desktop/mate-bg.c b/libmate-desktop/mate-bg.c
index f6571d9..4b7ccf4 100644
--- a/libmate-desktop/mate-bg.c
+++ b/libmate-desktop/mate-bg.c
@@ -309,14 +309,30 @@ void
 mate_bg_load_from_system_preferences (MateBG *bg)
 {
 	GSettings *settings;
-	gchar **keys;
-	gchar **k;
 
 	/* FIXME: we need to bind system settings instead of user but
 	* that's currently impossible, not implemented yet.
 	* Hence, reset to system default values.
 	*/
 	settings = g_settings_new (MATE_BG_SCHEMA);
+
+	mate_bg_load_from_system_gsettings (bg, settings, FALSE);
+
+	g_object_unref (settings);
+}
+
+/* This function loads (and optionally resets to) default system settings */
+void
+mate_bg_load_from_system_gsettings (MateBG    *bg,
+				    GSettings *settings,
+				    gboolean   reset_apply)
+{
+	gchar **keys;
+	gchar **k;
+
+	g_return_if_fail (MATE_IS_BG (bg));
+	g_return_if_fail (G_IS_SETTINGS (settings));
+
 	g_settings_delay (settings);
 
 	keys = g_settings_list_keys (settings);
@@ -325,9 +341,13 @@ mate_bg_load_from_system_preferences (MateBG *bg)
 	}
 	g_strfreev (keys);
 
-	mate_bg_load_from_gsettings (bg, settings);
-	g_settings_revert (settings);
-	g_object_unref (settings);
+	if (reset_apply) {
+		/* Apply changes atomically. */
+		g_settings_apply (settings);
+	} else {
+		mate_bg_load_from_gsettings (bg, settings);
+		g_settings_revert (settings);
+	}
 }
 
 void
@@ -397,16 +417,26 @@ mate_bg_load_from_gsettings (MateBG    *bg,
 void
 mate_bg_save_to_preferences (MateBG *bg)
 {
+	GSettings *settings;
+	settings = g_settings_new (MATE_BG_SCHEMA);
+
+	mate_bg_save_to_gsettings (bg, settings);
+	g_object_unref (settings);
+}
+
+void
+mate_bg_save_to_gsettings (MateBG    *bg,
+			   GSettings *settings)
+{
 	gchar *primary;
 	gchar *secondary;
-	GSettings *settings;
 
 	g_return_if_fail (MATE_IS_BG (bg));
+	g_return_if_fail (G_IS_SETTINGS (settings));
 
 	primary = color_to_string (&bg->primary);
 	secondary = color_to_string (&bg->secondary);
 
-	settings = g_settings_new (MATE_BG_SCHEMA);
 	g_settings_delay (settings);
 
 	g_settings_set_boolean (settings, BG_KEY_DRAW_BACKGROUND, bg->is_enabled);
@@ -419,8 +449,6 @@ mate_bg_save_to_preferences (MateBG *bg)
 	/* Apply changes atomically. */
 	g_settings_apply (settings);
 
-	g_object_unref (settings);
-
 	g_free (primary);
 	g_free (secondary);
 }