--- /dev/null
+/*
+ * Copyright © 2010 Codethink Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt@desrt.ca>
+ */
+
+#include "config.h"
+
+#include "gmemorysettingsbackend.h"
+#include "gsettingsbackend.h"
+#include "giomodule.h"
+
+#include "gioalias.h"
+
+#define G_TYPE_MEMORY_SETTINGS_BACKEND (g_memory_settings_backend_get_type())
+#define G_MEMORY_SETTINGS_BACKEND(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
+ G_TYPE_MEMORY_SETTINGS_BACKEND, \
+ GMemorySettingsBackend))
+
+typedef GSettingsBackendClass GMemorySettingsBackendClass;
+typedef struct
+{
+ GSettingsBackend parent_instance;
+ GHashTable *table;
+} GMemorySettingsBackend;
+
+G_DEFINE_TYPE_WITH_CODE (GMemorySettingsBackend,
+ g_memory_settings_backend,
+ G_TYPE_SETTINGS_BACKEND,
+ g_io_extension_point_implement (G_SETTINGS_BACKEND_EXTENSION_POINT_NAME,
+ g_define_type_id, "memory", 10))
+
+static GVariant *
+g_memory_settings_backend_read (GSettingsBackend *backend,
+ const gchar *key,
+ const GVariantType *expected_type)
+{
+ GVariant *value;
+
+ GMemorySettingsBackend *memory = G_MEMORY_SETTINGS_BACKEND (backend);
+
+ value = g_hash_table_lookup (memory->table, key);
+
+ if (value != NULL)
+ g_variant_ref (value);
+
+ return value;
+}
+
+static gboolean
+g_memory_settings_backend_write (GSettingsBackend *backend,
+ const gchar *key,
+ GVariant *value,
+ gpointer origin_tag)
+{
+ GMemorySettingsBackend *memory = G_MEMORY_SETTINGS_BACKEND (backend);
+ GVariant *old_value;
+
+ old_value = g_hash_table_lookup (memory->table, key);
+ g_variant_ref_sink (value);
+
+ if (old_value == NULL || !g_variant_equal (value, old_value))
+ {
+ g_hash_table_insert (memory->table, g_strdup (key), value);
+ g_settings_backend_changed (backend, key, origin_tag);
+ }
+ else
+ g_variant_unref (value);
+
+ return TRUE;
+}
+
+static gboolean
+g_memory_settings_backend_write_one (gpointer key,
+ gpointer value,
+ gpointer data)
+{
+ GMemorySettingsBackend *memory = data;
+
+ g_hash_table_insert (memory->table, g_strdup (key), g_variant_ref (value));
+
+ return FALSE;
+}
+
+static gboolean
+g_memory_settings_backend_write_keys (GSettingsBackend *backend,
+ GTree *tree,
+ gpointer origin_tag)
+{
+ g_tree_foreach (tree, g_memory_settings_backend_write_one, backend);
+ g_settings_backend_changed_tree (backend, tree, origin_tag);
+
+ return TRUE;
+}
+
+static gboolean
+g_memory_settings_backend_get_writable (GSettingsBackend *backend,
+ const gchar *name)
+{
+ return TRUE;
+}
+
+static void
+g_memory_settings_backend_finalize (GObject *object)
+{
+ GMemorySettingsBackend *memory = G_MEMORY_SETTINGS_BACKEND (object);
+
+ g_hash_table_unref (memory->table);
+
+ G_OBJECT_CLASS (g_memory_settings_backend_parent_class)
+ ->finalize (object);
+}
+
+static void
+g_memory_settings_backend_init (GMemorySettingsBackend *memory)
+{
+ memory->table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
+ (GDestroyNotify) g_variant_unref);
+}
+
+static void
+g_memory_settings_backend_class_init (GMemorySettingsBackendClass *class)
+{
+ GSettingsBackendClass *backend_class = G_SETTINGS_BACKEND_CLASS (class);
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+ backend_class->read = g_memory_settings_backend_read;
+ backend_class->write = g_memory_settings_backend_write;
+ backend_class->write_keys = g_memory_settings_backend_write_keys;
+ backend_class->get_writable = g_memory_settings_backend_get_writable;
+ object_class->finalize = g_memory_settings_backend_finalize;
+}
--- /dev/null
+/*
+ * Copyright © 2010 Codethink Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt@desrt.ca>
+ */
+
+#ifndef __GMEMORY_SETTINGS_BACKEND_H__
+#define __GMEMORY_SETTINGS_BACKEND_H__
+
+#include <glib-object.h>
+
+G_GNUC_INTERNAL
+GType g_memory_settings_backend_get_type (void);
+
+#endif /* __G_MEMORY_SETTINGS_BACKEND_H__ */