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for the emission of AFTER signals, fetch the objects signals via

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Tue Feb  3 15:09:55 1998  Tim Janik  <timj@gimp.org>

        * gtk/gtksignal.c (gtk_signal_real_emit): for the emission
          of AFTER signals, fetch the objects signals via
          gtk_signal_get_handlers again. some handlers might have
          been removed or added. not doing this would mess up the
          memchunk allocation of signal handlers (this had been
          triggered by multiple *_while_alive connections), bad, bad, bad!
          (gtk_handlers_run): do the referencing on signal handlers
          unconditionally, the invokation of AFTER handlers will now take
          care of modified lists.

        * gtk/gtksignal.h: added gtk_signal_connect_while_alive.
This commit is contained in:
Tim Janik
1998-02-03 21:36:06 +00:00
committed by Tim Janik
parent 3b0de24a7b
commit 64ca527ecb
10 changed files with 154 additions and 9 deletions
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3
gtk/gtkobject.c
View File

@ -420,6 +420,9 @@ gtk_object_finalize (GtkObject *object)
void
gtk_object_sink (GtkObject *object)
{
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_OBJECT (object));
if (GTK_OBJECT_FLOATING (object))
{
GTK_OBJECT_UNSET_FLAGS (object, GTK_FLOATING);

57
gtk/gtksignal.c
View File

@ -555,6 +555,37 @@ gtk_alive_disconnecter (GtkDisconnectInfo *info)
return 0;
}
void
gtk_signal_connect_while_alive (GtkObject *object,
const gchar *signal,
GtkSignalFunc func,
gpointer func_data,
GtkObject *alive_object)
{
GtkDisconnectInfo *info;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_OBJECT (object));
g_return_if_fail (signal != NULL);
g_return_if_fail (func != NULL);
g_return_if_fail (alive_object != NULL);
g_return_if_fail (GTK_IS_OBJECT (alive_object));
info = g_new (GtkDisconnectInfo, 1);
info->object1 = object;
info->object2 = alive_object;
info->signal_handler = gtk_signal_connect (object, signal, func, func_data);
info->disconnect_handler1 = gtk_signal_connect_object (info->object1,
"destroy",
GTK_SIGNAL_FUNC (gtk_alive_disconnecter),
(GtkObject*) info);
info->disconnect_handler2 = gtk_signal_connect_object (info->object2,
"destroy",
GTK_SIGNAL_FUNC (gtk_alive_disconnecter),
(GtkObject*) info);
}
void
gtk_signal_connect_object_while_alive (GtkObject *object,
const gchar *signal,
@ -881,6 +912,13 @@ gtk_signal_handler_unref (GtkHandler *handler,
{
GtkHandler *tmp;
if (!handler->ref_count)
{
/* FIXME: i wanna get removed some when (maybe at gtk+-1.0?) */
g_warning ("gtk_signal_handler_unref(): handler with ref_count==0!");
return;
}
handler->ref_count -= 1;
if (handler->ref_count == 0)
{
@ -1013,6 +1051,7 @@ restart:
NULL, params);
}
handlers = gtk_signal_get_handlers (object, signal_type);
switch (gtk_handlers_run (handlers, &info, TRUE))
{
case DONE:
@ -1223,13 +1262,13 @@ gtk_handlers_run (GtkHandler *handlers,
while (handlers)
{
if (!after)
gtk_signal_handler_ref (handlers);
/* REMOVE: if (!after) */
gtk_signal_handler_ref (handlers);
if (handlers->signal_type != info->signal_type)
{
if (after)
gtk_signal_handler_unref (handlers, info->object);
/* REMOVE: if (after) */
gtk_signal_handler_unref (handlers, info->object);
break;
}
@ -1270,8 +1309,8 @@ gtk_handlers_run (GtkHandler *handlers,
if (info->run_type & GTK_RUN_NO_RECURSE)
gtk_emission_remove (&restart_emissions, info->object,
info->signal_type);
if (after)
gtk_signal_handler_unref (handlers, info->object);
/* REMOVE: if (after) */
gtk_signal_handler_unref (handlers, info->object);
return DONE;
}
else if ((info->run_type & GTK_RUN_NO_RECURSE) &&
@ -1280,14 +1319,14 @@ gtk_handlers_run (GtkHandler *handlers,
{
gtk_emission_remove (&restart_emissions, info->object,
info->signal_type);
if (after)
gtk_signal_handler_unref (handlers, info->object);
/* REMOVE: if (after) */
gtk_signal_handler_unref (handlers, info->object);
return RESTART;
}
}
handlers_next = handlers->next;
if (after)
/* if (after) */
gtk_signal_handler_unref (handlers, info->object);
handlers = handlers_next;
}

5
gtk/gtksignal.h
View File

@ -113,6 +113,11 @@ void gtk_signal_connect_object_while_alive (GtkObject *object,
const gchar *signal,
GtkSignalFunc func,
GtkObject *alive_object);
void gtk_signal_connect_while_alive (GtkObject *object,
const gchar *signal,
GtkSignalFunc func,
gpointer func_data,
GtkObject *alive_object);
void gtk_signal_disconnect (GtkObject *object,
gint anid);