[gnome-settings-daemon] gconf: Listen to GSettings changes and propagate them to GConf, only one-way

[Rodrigo Moya <rodrigo src gnome org>]

commit e247aa0f42b1f4ecc301a1babd52f9e6a7849368
Author: Rodrigo Moya <rodrigo gnome-db org>
Date:   Fri Oct 22 17:22:13 2010 +0200

    gconf: Listen to GSettings changes and propagate them to GConf, only one-way

 plugins/gconf/conf-watcher.c      |   80 +++++++++++++++++++++++++++++++++++++
 plugins/gconf/conf-watcher.h      |    6 +++
 plugins/gconf/gsd-gconf-manager.c |    2 +
 3 files changed, 88 insertions(+), 0 deletions(-)
---
diff --git a/plugins/gconf/conf-watcher.c b/plugins/gconf/conf-watcher.c
index 32e572a..99a148d 100644
--- a/plugins/gconf/conf-watcher.c
+++ b/plugins/gconf/conf-watcher.c
@@ -28,6 +28,12 @@ conf_watcher_finalize (GObject *object)
 {
 	ConfWatcher *watcher = CONF_WATCHER (object);
 
+	if (watcher->settings != NULL)
+		g_object_unref (watcher->settings);
+
+	if (watcher->conf_client != NULL)
+		g_object_unref (watcher->conf_client);
+
 	if (watcher->settings_id != NULL)
 		g_free (watcher->settings_id);
 
@@ -50,6 +56,76 @@ conf_watcher_init (ConfWatcher *watcher)
 {
 }
 
+static void
+settings_changed_cb (GSettings *settings,
+		     const gchar *key,
+		     ConfWatcher *watcher)
+{
+	const gchar *gconf_key_name;
+
+	gconf_key_name = g_hash_table_lookup (watcher->keys_hash, key);
+	if (gconf_key_name != NULL) {
+		GVariant *value;
+
+		value = g_settings_get_value (settings, key);
+		if (g_variant_is_of_type (value, G_VARIANT_TYPE_BOOLEAN)) {
+			gconf_client_set_bool (watcher->conf_client,
+					       gconf_key_name,
+					       g_variant_get_boolean (value),
+					       NULL);
+		} else if (g_variant_is_of_type (value, G_VARIANT_TYPE_BYTE) ||
+			   g_variant_is_of_type (value, G_VARIANT_TYPE_INT16) ||
+			   g_variant_is_of_type (value, G_VARIANT_TYPE_UINT16) ||
+			   g_variant_is_of_type (value, G_VARIANT_TYPE_INT32) ||
+			   g_variant_is_of_type (value, G_VARIANT_TYPE_UINT32) ||
+			   g_variant_is_of_type (value, G_VARIANT_TYPE_INT64) ||
+			   g_variant_is_of_type (value, G_VARIANT_TYPE_UINT64)) {
+			gconf_client_set_int (watcher->conf_client,
+					      gconf_key_name,
+					      g_settings_get_int (settings, key),
+					      NULL);
+		} else if (g_variant_is_of_type (value, G_VARIANT_TYPE_STRING)) {
+			gconf_client_set_string (watcher->conf_client,
+						 gconf_key_name,
+						 g_variant_get_string (value, NULL),
+						 NULL);
+		} else if (g_variant_is_of_type (value, G_VARIANT_TYPE_DOUBLE)) {
+			gconf_client_set_float (watcher->conf_client,
+						gconf_key_name,
+						g_variant_get_double (value),
+						NULL);
+		} else if (g_variant_is_of_type (value, G_VARIANT_TYPE_STRING_ARRAY)) {
+			const gchar **items;
+			gsize len, i;
+			GSList *gconf_list = NULL;
+
+			items = g_variant_get_strv (value, &len);
+			for (i = 0; i < len; i++) {
+				gconf_list = g_slist_append (gconf_list, (gpointer) items[i]);
+			}
+
+			gconf_client_set_list (watcher->conf_client,
+					       gconf_key_name,
+					       GCONF_VALUE_STRING,
+					       gconf_list,
+					       NULL);
+
+			g_slist_free (gconf_list);
+			g_free (items);
+		}
+	}
+}
+
+static void
+setup_watcher (ConfWatcher *watcher)
+{
+	watcher->settings = g_settings_new (watcher->settings_id);
+	g_signal_connect (watcher->settings, "changed",
+			  G_CALLBACK (settings_changed_cb), watcher);
+
+	watcher->conf_client = gconf_client_get_default ();
+}
+
 ConfWatcher *
 conf_watcher_new (const gchar *settings_id, GHashTable *keys_hash)
 {
@@ -60,5 +136,9 @@ conf_watcher_new (const gchar *settings_id, GHashTable *keys_hash)
 
 	watcher = g_object_new (TYPE_CONF_WATCHER, NULL);
 
+	watcher->settings_id = g_strdup (settings_id);
+	watcher->keys_hash = keys_hash;
+	setup_watcher (watcher);
+
 	return watcher;
 }
diff --git a/plugins/gconf/conf-watcher.h b/plugins/gconf/conf-watcher.h
index d86ffeb..ffe5544 100644
--- a/plugins/gconf/conf-watcher.h
+++ b/plugins/gconf/conf-watcher.h
@@ -22,6 +22,8 @@
 #define __CONF_WATCHER_H
 
 #include <glib-object.h>
+#include <gio/gio.h>
+#include <gconf/gconf-client.h>
 
 G_BEGIN_DECLS
 
@@ -37,6 +39,10 @@ typedef struct ConfWatcherPrivate ConfWatcherPrivate;
 typedef struct
 {
         GObject parent;
+
+	/* Private data */
+	GSettings *settings;
+	GConfClient *conf_client;
 	gchar *settings_id;
 	GHashTable *keys_hash;
 } ConfWatcher;
diff --git a/plugins/gconf/gsd-gconf-manager.c b/plugins/gconf/gsd-gconf-manager.c
index fa57963..ac78e56 100644
--- a/plugins/gconf/gsd-gconf-manager.c
+++ b/plugins/gconf/gsd-gconf-manager.c
@@ -81,6 +81,8 @@ gsd_gconf_manager_start (GsdGconfManager *manager, GError **error)
 	GDir *convertdir;
 	gboolean result = FALSE;
 
+	manager->priv->conf_watchers = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
+
 	/* Read all conversion files from GCONF_SETTINGS_CONVERTDIR */
 	convertdir = g_dir_open (GCONF_SETTINGS_CONVERTDIR, 0, error);
 	if (convertdir) {