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authorMatthew Barnes <mbarnes@redhat.com>2009-09-21 10:32:33 +0800
committerMatthew Barnes <mbarnes@redhat.com>2009-09-21 10:33:19 +0800
commit28de5cf05a31122a72c4c4fe49d958f8ba952c1f (patch)
tree4b1ddeebeae34a02d36488a51c5eb5e16240773a /e-util
parent5606859f3adc9c8b5b3180cd2711948ef413033a (diff)
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Bug 595119 - Crash while trying to add a new category in contact
Diffstat (limited to 'e-util')
-rw-r--r--e-util/e-categories-config.c8
-rw-r--r--e-util/e-util.c70
-rw-r--r--e-util/e-util.h2
3 files changed, 78 insertions, 2 deletions
diff --git a/e-util/e-categories-config.c b/e-util/e-categories-config.c
index 3dc35588b0..1abef79983 100644
--- a/e-util/e-categories-config.c
+++ b/e-util/e-categories-config.c
@@ -20,12 +20,15 @@
*
*/
+#include "e-categories-config.h"
+
#include <string.h>
#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <libedataserver/e-categories.h>
#include <libedataserverui/e-categories-dialog.h>
-#include "e-categories-config.h"
+
+#include "e-util/e-util.h"
static GHashTable *pixbufs_cache = NULL;
@@ -62,7 +65,8 @@ e_categories_config_get_icon_for (const gchar *category, GdkPixbuf **pixbuf)
if (!pixbufs_cache) {
pixbufs_cache = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, free_pixbuf_cb);
- e_categories_register_change_listener (G_CALLBACK (categories_changed_cb), NULL);
+ e_categories_add_change_hook (
+ (GHookFunc) categories_changed_cb, NULL);
} else {
gpointer key = NULL, value = NULL;
diff --git a/e-util/e-util.c b/e-util/e-util.c
index b2daca96f9..4e954a1c6c 100644
--- a/e-util/e-util.c
+++ b/e-util/e-util.c
@@ -410,6 +410,76 @@ e_radio_action_get_current_action (GtkRadioAction *radio_action)
return NULL;
}
+/* Helper for e_categories_add_change_hook() */
+static void
+categories_changed_cb (GObject *useless_opaque_object,
+ GHookList *hook_list)
+{
+ /* e_categories_register_change_listener() is broken because
+ * it requires callbacks to allow for some opaque GObject as
+ * the first argument (not does it document this). */
+ g_hook_list_invoke (hook_list, FALSE);
+}
+
+/* Helper for e_categories_add_change_hook() */
+static void
+categories_weak_notify_cb (GHookList *hook_list,
+ gpointer where_the_object_was)
+{
+ GHook *hook;
+
+ /* This should not happen, but if we fail to find the hook for
+ * some reason, g_hook_destroy_link() will warn about the NULL
+ * pointer, which is all we would do anyway so no need to test
+ * for it ourselves. */
+ hook = g_hook_find_data (hook_list, TRUE, where_the_object_was);
+ g_hook_destroy_link (hook_list, hook);
+}
+
+/**
+ * e_categories_add_change_hook:
+ * @func: a hook function
+ * @object: a #GObject to be passed to @func, or %NULL
+ *
+ * A saner alternative to e_categories_register_change_listener().
+ *
+ * Adds a hook function to be called when a category is added, removed or
+ * modified. If @object is not %NULL, the hook function is automatically
+ * removed when @object is finalized.
+ **/
+void
+e_categories_add_change_hook (GHookFunc func,
+ gpointer object)
+{
+ static gboolean initialized = FALSE;
+ static GHookList hook_list;
+ GHook *hook;
+
+ g_return_if_fail (func != NULL);
+
+ if (object != NULL)
+ g_return_if_fail (G_IS_OBJECT (object));
+
+ if (!initialized) {
+ g_hook_list_init (&hook_list, sizeof (GHook));
+ e_categories_register_change_listener (
+ G_CALLBACK (categories_changed_cb), &hook_list);
+ initialized = TRUE;
+ }
+
+ hook = g_hook_alloc (&hook_list);
+
+ hook->func = func;
+ hook->data = object;
+
+ if (object != NULL)
+ g_object_weak_ref (
+ G_OBJECT (object), (GWeakNotify)
+ categories_weak_notify_cb, &hook_list);
+
+ g_hook_append (&hook_list, hook);
+}
+
/**
* e_type_traverse:
* @parent_type: the root #GType to traverse from
diff --git a/e-util/e-util.h b/e-util/e-util.h
index 83b3141232..68abcd4cba 100644
--- a/e-util/e-util.h
+++ b/e-util/e-util.h
@@ -61,6 +61,8 @@ void e_action_group_remove_all_actions
(GtkActionGroup *action_group);
GtkRadioAction *e_radio_action_get_current_action
(GtkRadioAction *radio_action);
+void e_categories_add_change_hook (GHookFunc func,
+ gpointer object);
void e_type_traverse (GType parent_type,
ETypeFunc func,
gpointer user_data);