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-rw-r--r--mate-session/gsm-store.c413
1 files changed, 413 insertions, 0 deletions
diff --git a/mate-session/gsm-store.c b/mate-session/gsm-store.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007-2008 William Jon McCann <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <glib-object.h>
+
+#include "gsm-store.h"
+
+#define GSM_STORE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GSM_TYPE_STORE, GsmStorePrivate))
+
+struct GsmStorePrivate
+{
+ GHashTable *objects;
+ gboolean locked;
+};
+
+enum {
+ ADDED,
+ REMOVED,
+ LAST_SIGNAL
+};
+
+enum {
+ PROP_0,
+ PROP_LOCKED
+};
+
+static guint signals [LAST_SIGNAL] = { 0 };
+
+static void gsm_store_class_init (GsmStoreClass *klass);
+static void gsm_store_init (GsmStore *store);
+static void gsm_store_finalize (GObject *object);
+
+G_DEFINE_TYPE (GsmStore, gsm_store, G_TYPE_OBJECT)
+
+GQuark
+gsm_store_error_quark (void)
+{
+ static GQuark ret = 0;
+ if (ret == 0) {
+ ret = g_quark_from_static_string ("gsm_store_error");
+ }
+
+ return ret;
+}
+
+guint
+gsm_store_size (GsmStore *store)
+{
+ return g_hash_table_size (store->priv->objects);
+}
+
+gboolean
+gsm_store_remove (GsmStore *store,
+ const char *id)
+{
+ GObject *found;
+ gboolean removed;
+ char *id_copy;
+
+ g_return_val_if_fail (store != NULL, FALSE);
+
+ found = g_hash_table_lookup (store->priv->objects, id);
+ if (found == NULL) {
+ return FALSE;
+ }
+
+ id_copy = g_strdup (id);
+
+ g_object_ref (found);
+
+ removed = g_hash_table_remove (store->priv->objects, id_copy);
+ g_assert (removed);
+
+ g_signal_emit (store, signals [REMOVED], 0, id_copy);
+
+ g_object_unref (found);
+ g_free (id_copy);
+
+ return TRUE;
+}
+
+void
+gsm_store_foreach (GsmStore *store,
+ GsmStoreFunc func,
+ gpointer user_data)
+{
+ g_return_if_fail (store != NULL);
+ g_return_if_fail (func != NULL);
+
+ g_hash_table_find (store->priv->objects,
+ (GHRFunc)func,
+ user_data);
+}
+
+GObject *
+gsm_store_find (GsmStore *store,
+ GsmStoreFunc predicate,
+ gpointer user_data)
+{
+ GObject *object;
+
+ g_return_val_if_fail (store != NULL, NULL);
+ g_return_val_if_fail (predicate != NULL, NULL);
+
+ object = g_hash_table_find (store->priv->objects,
+ (GHRFunc)predicate,
+ user_data);
+ return object;
+}
+
+GObject *
+gsm_store_lookup (GsmStore *store,
+ const char *id)
+{
+ GObject *object;
+
+ g_return_val_if_fail (store != NULL, NULL);
+ g_return_val_if_fail (id != NULL, NULL);
+
+ object = g_hash_table_lookup (store->priv->objects, id);
+
+ return object;
+}
+
+
+typedef struct
+{
+ GsmStoreFunc func;
+ gpointer user_data;
+ GsmStore *store;
+ GList *removed;
+} WrapperData;
+
+static gboolean
+foreach_remove_wrapper (const char *id,
+ GObject *object,
+ WrapperData *data)
+{
+ gboolean res;
+
+ res = (data->func) (id, object, data->user_data);
+ if (res) {
+ data->removed = g_list_prepend (data->removed, g_strdup (id));
+ }
+
+ return res;
+}
+
+guint
+gsm_store_foreach_remove (GsmStore *store,
+ GsmStoreFunc func,
+ gpointer user_data)
+{
+ guint ret;
+ WrapperData data;
+
+ g_return_val_if_fail (store != NULL, 0);
+ g_return_val_if_fail (func != NULL, 0);
+
+ data.store = store;
+ data.user_data = user_data;
+ data.func = func;
+ data.removed = NULL;
+
+ ret = g_hash_table_foreach_remove (store->priv->objects,
+ (GHRFunc)foreach_remove_wrapper,
+ &data);
+
+ while (data.removed != NULL) {
+ char *id;
+ id = data.removed->data;
+ g_debug ("GsmStore: emitting removed for %s", id);
+ g_signal_emit (store, signals [REMOVED], 0, id);
+ g_free (data.removed->data);
+ data.removed->data = NULL;
+ data.removed = g_list_delete_link (data.removed, data.removed);
+ }
+
+ return ret;
+}
+
+static gboolean
+_remove_all (const char *id,
+ GObject *object,
+ gpointer data)
+{
+ return TRUE;
+}
+
+void
+gsm_store_clear (GsmStore *store)
+{
+ g_return_if_fail (store != NULL);
+
+ g_debug ("GsmStore: Clearing object store");
+
+ gsm_store_foreach_remove (store,
+ _remove_all,
+ NULL);
+}
+
+gboolean
+gsm_store_add (GsmStore *store,
+ const char *id,
+ GObject *object)
+{
+ g_return_val_if_fail (store != NULL, FALSE);
+ g_return_val_if_fail (id != NULL, FALSE);
+ g_return_val_if_fail (object != NULL, FALSE);
+
+ /* If we're locked, we don't accept any new session
+ objects. */
+ if (store->priv->locked) {
+ return FALSE;
+ }
+
+ g_debug ("GsmStore: Adding object id %s to store", id);
+
+ g_hash_table_insert (store->priv->objects,
+ g_strdup (id),
+ g_object_ref (object));
+
+ g_signal_emit (store, signals [ADDED], 0, id);
+
+ return TRUE;
+}
+
+void
+gsm_store_set_locked (GsmStore *store,
+ gboolean locked)
+{
+ g_return_if_fail (GSM_IS_STORE (store));
+
+ store->priv->locked = locked;
+}
+
+gboolean
+gsm_store_get_locked (GsmStore *store)
+{
+ g_return_val_if_fail (GSM_IS_STORE (store), FALSE);
+
+ return store->priv->locked;
+}
+
+static void
+gsm_store_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GsmStore *self;
+
+ self = GSM_STORE (object);
+
+ switch (prop_id) {
+ case PROP_LOCKED:
+ gsm_store_set_locked (self, g_value_get_boolean (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gsm_store_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GsmStore *self;
+
+ self = GSM_STORE (object);
+
+ switch (prop_id) {
+ case PROP_LOCKED:
+ g_value_set_boolean (value, self->priv->locked);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gsm_store_dispose (GObject *object)
+{
+ GsmStore *store;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GSM_IS_STORE (object));
+
+ store = GSM_STORE (object);
+
+ gsm_store_clear (store);
+
+ G_OBJECT_CLASS (gsm_store_parent_class)->dispose (object);
+}
+
+static void
+gsm_store_class_init (GsmStoreClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->get_property = gsm_store_get_property;
+ object_class->set_property = gsm_store_set_property;
+ object_class->finalize = gsm_store_finalize;
+ object_class->dispose = gsm_store_dispose;
+
+ signals [ADDED] =
+ g_signal_new ("added",
+ G_TYPE_FROM_CLASS (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GsmStoreClass, added),
+ NULL,
+ NULL,
+ g_cclosure_marshal_VOID__STRING,
+ G_TYPE_NONE,
+ 1, G_TYPE_STRING);
+ signals [REMOVED] =
+ g_signal_new ("removed",
+ G_TYPE_FROM_CLASS (object_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GsmStoreClass, removed),
+ NULL,
+ NULL,
+ g_cclosure_marshal_VOID__STRING,
+ G_TYPE_NONE,
+ 1, G_TYPE_STRING);
+ g_object_class_install_property (object_class,
+ PROP_LOCKED,
+ g_param_spec_boolean ("locked",
+ NULL,
+ NULL,
+ FALSE,
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+ g_type_class_add_private (klass, sizeof (GsmStorePrivate));
+}
+
+static void
+_destroy_object (GObject *object)
+{
+ g_debug ("GsmStore: Unreffing object: %p", object);
+ g_object_unref (object);
+}
+
+static void
+gsm_store_init (GsmStore *store)
+{
+
+ store->priv = GSM_STORE_GET_PRIVATE (store);
+
+ store->priv->objects = g_hash_table_new_full (g_str_hash,
+ g_str_equal,
+ g_free,
+ (GDestroyNotify) _destroy_object);
+}
+
+static void
+gsm_store_finalize (GObject *object)
+{
+ GsmStore *store;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (GSM_IS_STORE (object));
+
+ store = GSM_STORE (object);
+
+ g_return_if_fail (store->priv != NULL);
+
+ g_hash_table_destroy (store->priv->objects);
+
+ G_OBJECT_CLASS (gsm_store_parent_class)->finalize (object);
+}
+
+GsmStore *
+gsm_store_new (void)
+{
+ GObject *object;
+
+ object = g_object_new (GSM_TYPE_STORE,
+ NULL);
+
+ return GSM_STORE (object);
+}
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