Mon, 11 Jan 1999 08:09:08 +0100 Paolo Molaro <lupus@debian.org>

        * gtk/gtktypeutils.[ch]: add gtk_type_{add,remove}_creation_hook().
        You can have a notification when a type is created.

1 files changed, 58 insertions, 2 deletions

diff --git a/gtk/gtktypeutils.c b/gtk/gtktypeutils.c
index 1d3fed1c1..dc33bc84d 100644
--- a/gtk/gtktypeutils.c
+++ b/gtk/gtktypeutils.c
@@ -37,7 +37,6 @@ struct _GtkTypeNode
   GMemChunk *mem_chunk;
 };
 
-
 #define	LOOKUP_TYPE_NODE(node_var, type)	{ \
     GtkTypeNode *__node = NULL; \
     GtkType sqn = GTK_TYPE_SEQNO (type); \
@@ -66,6 +65,7 @@ static guint	    n_type_nodes = 0;
 static guint	    n_ftype_nodes = 0;
 static GHashTable  *type_name_2_type_ht = NULL;
 
+static GHookList *creation_hook_list = NULL;
 
 static GtkTypeNode*
 gtk_type_node_next_and_invalidate (GtkType parent_type)
@@ -228,6 +228,15 @@ gtk_type_create (GtkType      parent_type,
   return new_node->type;
 }
 
+static gboolean
+gtk_creation_marshaller (GHook* hook, gpointer data)
+{
+  GtkTypeQuery *query = (GtkTypeQuery*) data;
+  GtkCreationHook func = hook->func;
+  
+  return func(query, hook->data);
+}
+
 GtkType
 gtk_type_unique (GtkType      parent_type,
 		 const GtkTypeInfo *type_info)
@@ -253,7 +262,17 @@ gtk_type_unique (GtkType      parent_type,
   
   if (!new_type)
     g_free (type_name);
-  
+  else if ( creation_hook_list )
+    {
+      GtkTypeQuery data;
+      data.type = new_type;
+      data.type_name = type_name;
+      data.object_size = type_info->object_size;
+      data.class_size = type_info->class_size;
+
+      g_hook_list_marshal_check(creation_hook_list, FALSE, gtk_creation_marshaller, &data);
+    }
+
   return new_type;
 }
 
@@ -1015,3 +1034,40 @@ gtk_identifier_get_type (void)
   
   return identifier_type;
 }
+
+guint
+gtk_type_add_creation_hook (GtkCreationHook hook_func,
+                            gpointer        data,
+                            GDestroyNotify  destroy)
+{
+  static guint seq_id =1;
+  GHook * hook;
+  
+  g_return_val_if_fail(hook_func != NULL, 0);
+
+  if (!creation_hook_list)
+    {
+      creation_hook_list = g_new(GHookList, 1);
+      g_hook_list_init(creation_hook_list, sizeof(GHook));
+    }
+
+  hook = g_hook_alloc (creation_hook_list);
+  hook->data = data;
+  hook->func = hook_func;
+  hook->destroy = destroy;
+
+  creation_hook_list->seq_id = seq_id;
+  g_hook_prepend(creation_hook_list, hook);
+  seq_id = creation_hook_list->seq_id;
+
+  return hook->hook_id;
+}
+
+void
+gtk_type_remove_creation_hook (guint hook_id)
+{
+  g_return_if_fail(hook_id != 0);
+
+  if (!creation_hook_list || !g_hook_destroy(creation_hook_list, hook_id))
+    g_warning("gtk_type_remove_creation_hook(): could not find hook (%u)", hook_id);
+}