forked from AuroraMiddleware/gtk
0c36e30836
Mon Nov 30 10:11:29 1998 Tim Janik <timj@gtk.org>
* gtk/testgtkrc: merged testgtkrc with the pre-themes one, removed
system specific includes.
* gtk/gtksignal.c: asured that stop and restart emissions are also
checked and processed for not connected objects. fixed up restart
emission administration. invoke emission hooks after emission, hooks
are not supposed to muck around with the current emission, and
may also not cause emission restarts. fixed up stop emission
administration.
1964 lines
47 KiB
C
1964 lines
47 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdarg.h>
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#include <string.h>
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#include <stdio.h>
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#include "gtksignal.h"
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#include "gtkargcollector.c"
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#define SIGNAL_BLOCK_SIZE (100)
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#define HANDLER_BLOCK_SIZE (200)
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#define EMISSION_BLOCK_SIZE (100)
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#define DISCONNECT_INFO_BLOCK_SIZE (64)
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#define MAX_SIGNAL_PARAMS (31)
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enum
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{
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EMISSION_CONTINUE,
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EMISSION_RESTART,
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EMISSION_DONE
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};
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#define GTK_RUN_TYPE(x) ((x) & GTK_RUN_BOTH)
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typedef struct _GtkSignal GtkSignal;
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typedef struct _GtkSignalHash GtkSignalHash;
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typedef struct _GtkHandler GtkHandler;
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typedef struct _GtkEmission GtkEmission;
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typedef union _GtkEmissionAllocator GtkEmissionAllocator;
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typedef struct _GtkDisconnectInfo GtkDisconnectInfo;
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typedef void (*GtkSignalMarshaller0) (GtkObject *object,
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gpointer data);
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struct _GtkSignal
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{
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guint signal_id;
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GtkType object_type;
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gchar *name;
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guint function_offset;
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GtkSignalMarshaller marshaller;
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GtkType return_val;
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GtkSignalRunType signal_flags : 16;
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guint nparams : 16;
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GtkType *params;
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GHookList *hook_list;
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};
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struct _GtkSignalHash
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{
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GtkType object_type;
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GQuark quark;
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guint signal_id;
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};
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struct _GtkHandler
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{
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guint id;
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guint blocked : 20;
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guint object_signal : 1;
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guint after : 1;
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guint no_marshal : 1;
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guint16 ref_count;
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guint16 signal_id;
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GtkSignalFunc func;
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gpointer func_data;
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GtkSignalDestroy destroy_func;
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GtkHandler *prev;
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GtkHandler *next;
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};
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struct _GtkEmission
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{
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GtkObject *object;
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guint signal_id;
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};
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union _GtkEmissionAllocator
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{
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GtkEmissionAllocator *next;
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GtkEmission emission;
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};
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struct _GtkDisconnectInfo
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{
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GtkObject *object1;
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guint disconnect_handler1;
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guint signal_handler;
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GtkObject *object2;
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guint disconnect_handler2;
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};
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static guint gtk_signal_hash (gconstpointer h);
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static gint gtk_signal_compare (gconstpointer h1,
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gconstpointer h2);
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static GtkHandler* gtk_signal_handler_new (void);
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static void gtk_signal_handler_ref (GtkHandler *handler);
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static void gtk_signal_handler_unref (GtkHandler *handler,
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GtkObject *object);
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static void gtk_signal_handler_insert (GtkObject *object,
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GtkHandler *handler);
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static void gtk_signal_real_emit (GtkObject *object,
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guint signal_id,
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GtkArg *params);
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static GtkHandler* gtk_signal_get_handlers (GtkObject *object,
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guint signal_type);
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static guint gtk_signal_connect_by_type (GtkObject *object,
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guint signal_id,
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GtkSignalFunc func,
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gpointer func_data,
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GtkSignalDestroy destroy_func,
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gint object_signal,
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gint after,
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gint no_marshal);
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static guint gtk_alive_disconnecter (GtkDisconnectInfo *info);
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static GtkEmission* gtk_emission_new (void);
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static void gtk_emission_add (GList **emissions,
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GtkObject *object,
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guint signal_type);
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static void gtk_emission_remove (GList **emissions,
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GtkObject *object,
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guint signal_type);
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static gint gtk_emission_check (GList *emissions,
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GtkObject *object,
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guint signal_type);
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static gint gtk_handlers_run (GtkHandler *handlers,
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GtkSignal *signal,
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GtkObject *object,
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GtkArg *params,
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gint after);
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static gboolean gtk_emission_hook_marshaller (GHook *hook,
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gpointer data);
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static gboolean gtk_signal_collect_params (GtkArg *params,
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guint nparams,
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GtkType *param_types,
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GtkType return_type,
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va_list var_args);
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#define LOOKUP_SIGNAL_ID(signal_id) ( \
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signal_id > 0 && signal_id < gtk_n_signals ? \
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(GtkSignal*) gtk_signals + signal_id : \
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(GtkSignal*) 0 \
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)
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static GtkSignalMarshal global_marshaller = NULL;
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static GtkSignalDestroy global_destroy_notify = NULL;
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static guint gtk_handler_id = 1;
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static guint handler_quark = 0;
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static GHashTable *gtk_signal_hash_table = NULL;
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static GtkSignal *gtk_signals = NULL;
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static guint gtk_n_signals = 0;
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static GMemChunk *gtk_signal_hash_mem_chunk = NULL;
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static GMemChunk *gtk_disconnect_info_mem_chunk = NULL;
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static GtkHandler *gtk_handler_free_list = NULL;
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static GtkEmissionAllocator *gtk_emission_free_list = NULL;
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static GList *current_emissions = NULL;
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static GList *stop_emissions = NULL;
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static GList *restart_emissions = NULL;
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static GtkSignal*
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gtk_signal_next_and_invalidate (void)
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{
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static guint gtk_n_free_signals = 0;
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register GtkSignal *signal;
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register guint new_signal_id;
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/* don't keep *any* GtkSignal pointers across invokation of this function!!!
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*/
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if (gtk_n_free_signals == 0)
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{
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register guint i;
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register guint size;
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/* nearest pow
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*/
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size = gtk_n_signals + SIGNAL_BLOCK_SIZE;
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size *= sizeof (GtkSignal);
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i = 1;
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while (i < size)
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i <<= 1;
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size = i;
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gtk_signals = g_realloc (gtk_signals, size);
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gtk_n_free_signals = size / sizeof (GtkSignal) - gtk_n_signals;
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memset (gtk_signals + gtk_n_signals, 0, gtk_n_free_signals * sizeof (GtkSignal));
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}
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new_signal_id = gtk_n_signals++;
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gtk_n_free_signals--;
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signal = LOOKUP_SIGNAL_ID (new_signal_id);
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if (signal)
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signal->signal_id = new_signal_id;
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return signal;
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}
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void
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gtk_signal_init (void)
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{
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if (!handler_quark)
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{
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GtkSignal *zero;
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zero = gtk_signal_next_and_invalidate ();
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g_assert (zero == NULL);
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handler_quark = g_quark_from_static_string ("gtk-signal-handlers");
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gtk_signal_hash_mem_chunk =
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g_mem_chunk_new ("GtkSignalHash mem chunk",
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sizeof (GtkSignalHash),
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sizeof (GtkSignalHash) * SIGNAL_BLOCK_SIZE,
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G_ALLOC_ONLY);
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gtk_disconnect_info_mem_chunk =
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g_mem_chunk_new ("GtkDisconnectInfo mem chunk",
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sizeof (GtkDisconnectInfo),
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sizeof (GtkDisconnectInfo) * DISCONNECT_INFO_BLOCK_SIZE,
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G_ALLOC_AND_FREE);
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gtk_handler_free_list = NULL;
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gtk_emission_free_list = NULL;
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gtk_signal_hash_table = g_hash_table_new (gtk_signal_hash,
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gtk_signal_compare);
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}
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}
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guint
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gtk_signal_newv (const gchar *r_name,
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GtkSignalRunType signal_flags,
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GtkType object_type,
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guint function_offset,
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GtkSignalMarshaller marshaller,
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GtkType return_val,
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guint nparams,
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GtkType *params)
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{
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GtkSignal *signal;
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GtkSignalHash *hash;
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GQuark quark;
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guint i;
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gchar *name;
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g_return_val_if_fail (r_name != NULL, 0);
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g_return_val_if_fail (marshaller != NULL, 0);
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g_return_val_if_fail (nparams < MAX_SIGNAL_PARAMS, 0);
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if (nparams)
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g_return_val_if_fail (params != NULL, 0);
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if (!handler_quark)
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gtk_signal_init ();
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name = g_strdup (r_name);
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g_strdelimit (name, NULL, '_');
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quark = gtk_signal_lookup (name, object_type);
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if (quark)
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{
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g_warning ("gtk_signal_newv(): signal \"%s\" already exists in the `%s' class ancestry\n",
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r_name,
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gtk_type_name (object_type));
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g_free (name);
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return 0;
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}
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if (return_val != GTK_TYPE_NONE &&
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(signal_flags & GTK_RUN_BOTH) == GTK_RUN_FIRST)
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{
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g_warning ("gtk_signal_newv(): signal \"%s\" - return value `%s' incompatible with GTK_RUN_FIRST",
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name, gtk_type_name (return_val));
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g_free (name);
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return 0;
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}
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signal = gtk_signal_next_and_invalidate ();
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/* signal->signal_id already set */
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signal->object_type = object_type;
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signal->name = name;
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signal->function_offset = function_offset;
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signal->marshaller = marshaller;
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signal->return_val = return_val;
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signal->signal_flags = signal_flags;
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signal->nparams = nparams;
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signal->hook_list = NULL;
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if (nparams > 0)
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{
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signal->params = g_new (GtkType, nparams);
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for (i = 0; i < nparams; i++)
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signal->params[i] = params[i];
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}
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else
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signal->params = NULL;
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/* insert "signal_name" into hash table
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*/
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hash = g_chunk_new (GtkSignalHash, gtk_signal_hash_mem_chunk);
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hash->object_type = object_type;
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hash->quark = g_quark_from_string (signal->name);
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hash->signal_id = signal->signal_id;
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g_hash_table_insert (gtk_signal_hash_table, hash, GUINT_TO_POINTER (hash->signal_id));
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/* insert "signal-name" into hash table
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*/
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g_strdelimit (signal->name, NULL, '-');
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quark = g_quark_from_static_string (signal->name);
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if (quark != hash->quark)
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{
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hash = g_chunk_new (GtkSignalHash, gtk_signal_hash_mem_chunk);
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hash->object_type = object_type;
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hash->quark = quark;
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hash->signal_id = signal->signal_id;
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g_hash_table_insert (gtk_signal_hash_table, hash, GUINT_TO_POINTER (hash->signal_id));
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}
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return signal->signal_id;
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}
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guint
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gtk_signal_new (const gchar *name,
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GtkSignalRunType signal_flags,
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GtkType object_type,
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guint function_offset,
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GtkSignalMarshaller marshaller,
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GtkType return_val,
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guint nparams,
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...)
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{
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GtkType *params;
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guint i;
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va_list args;
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guint signal_id;
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g_return_val_if_fail (nparams < MAX_SIGNAL_PARAMS, 0);
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if (nparams > 0)
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{
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params = g_new (GtkType, nparams);
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va_start (args, nparams);
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for (i = 0; i < nparams; i++)
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params[i] = va_arg (args, GtkType);
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va_end (args);
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}
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else
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params = NULL;
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signal_id = gtk_signal_newv (name,
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signal_flags,
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object_type,
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function_offset,
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marshaller,
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return_val,
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nparams,
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params);
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g_free (params);
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return signal_id;
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}
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guint
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gtk_signal_lookup (const gchar *name,
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GtkType object_type)
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{
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GtkSignalHash hash;
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g_return_val_if_fail (name != NULL, 0);
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g_return_val_if_fail (gtk_type_is_a (object_type, GTK_TYPE_OBJECT), 0);
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hash.quark = g_quark_try_string (name);
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if (hash.quark)
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{
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while (object_type)
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{
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guint signal_id;
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hash.object_type = object_type;
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signal_id = GPOINTER_TO_UINT (g_hash_table_lookup (gtk_signal_hash_table, &hash));
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if (signal_id)
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return signal_id;
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object_type = gtk_type_parent (object_type);
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}
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}
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return 0;
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}
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GtkSignalQuery*
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gtk_signal_query (guint signal_id)
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{
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GtkSignalQuery *query;
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GtkSignal *signal;
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g_return_val_if_fail (signal_id >= 1, NULL);
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signal = LOOKUP_SIGNAL_ID (signal_id);
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if (signal)
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{
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query = g_new (GtkSignalQuery, 1);
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query->object_type = signal->object_type;
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query->signal_id = signal_id;
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query->signal_name = signal->name;
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query->is_user_signal = signal->function_offset == 0;
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query->signal_flags = signal->signal_flags;
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query->return_val = signal->return_val;
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query->nparams = signal->nparams;
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query->params = signal->params;
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}
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else
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query = NULL;
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return query;
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}
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gchar*
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gtk_signal_name (guint signal_id)
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{
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GtkSignal *signal;
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g_return_val_if_fail (signal_id >= 1, NULL);
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signal = LOOKUP_SIGNAL_ID (signal_id);
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if (signal)
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return signal->name;
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return NULL;
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}
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void
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gtk_signal_emitv (GtkObject *object,
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guint signal_id,
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GtkArg *params)
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{
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GtkSignal *signal;
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g_return_if_fail (object != NULL);
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g_return_if_fail (signal_id >= 1);
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signal = LOOKUP_SIGNAL_ID (signal_id);
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g_return_if_fail (signal != NULL);
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g_return_if_fail (gtk_type_is_a (GTK_OBJECT_TYPE (object), signal->object_type));
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if (signal->nparams > 0)
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g_return_if_fail (params != NULL);
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gtk_signal_real_emit (object, signal_id, params);
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}
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void
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gtk_signal_emit (GtkObject *object,
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guint signal_id,
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...)
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{
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GtkSignal *signal;
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va_list args;
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GtkArg params[MAX_SIGNAL_PARAMS + 1];
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gboolean abort;
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g_return_if_fail (object != NULL);
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g_return_if_fail (signal_id >= 1);
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signal = LOOKUP_SIGNAL_ID (signal_id);
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g_return_if_fail (signal != NULL);
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g_return_if_fail (gtk_type_is_a (GTK_OBJECT_TYPE (object), signal->object_type));
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va_start (args, signal_id);
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abort = gtk_signal_collect_params (params,
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signal->nparams,
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signal->params,
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signal->return_val,
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args);
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va_end (args);
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if (!abort)
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gtk_signal_real_emit (object, signal_id, params);
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}
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void
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gtk_signal_emitv_by_name (GtkObject *object,
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const gchar *name,
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GtkArg *params)
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{
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guint signal_id;
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g_return_if_fail (object != NULL);
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g_return_if_fail (name != NULL);
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g_return_if_fail (params != NULL);
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signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
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if (signal_id >= 1)
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{
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GtkSignal *signal;
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signal = LOOKUP_SIGNAL_ID (signal_id);
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g_return_if_fail (signal != NULL);
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g_return_if_fail (gtk_type_is_a (GTK_OBJECT_TYPE (object), signal->object_type));
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gtk_signal_real_emit (object, signal_id, params);
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}
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else
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|
{
|
|
g_warning ("gtk_signal_emitv_by_name(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_signal_emit_by_name (GtkObject *object,
|
|
const gchar *name,
|
|
...)
|
|
{
|
|
guint signal_id;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (name != NULL);
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
|
|
if (signal_id >= 1)
|
|
{
|
|
GtkSignal *signal;
|
|
GtkArg params[MAX_SIGNAL_PARAMS + 1];
|
|
va_list args;
|
|
gboolean abort;
|
|
|
|
signal = LOOKUP_SIGNAL_ID (signal_id);
|
|
g_return_if_fail (signal != NULL);
|
|
g_return_if_fail (gtk_type_is_a (GTK_OBJECT_TYPE (object), signal->object_type));
|
|
|
|
va_start (args, name);
|
|
abort = gtk_signal_collect_params (params,
|
|
signal->nparams,
|
|
signal->params,
|
|
signal->return_val,
|
|
args);
|
|
va_end (args);
|
|
|
|
if (!abort)
|
|
gtk_signal_real_emit (object, signal_id, params);
|
|
}
|
|
else
|
|
{
|
|
g_warning ("gtk_signal_emit_by_name(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_signal_emit_stop (GtkObject *object,
|
|
guint signal_id)
|
|
{
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (signal_id >= 1);
|
|
|
|
if (gtk_emission_check (current_emissions, object, signal_id))
|
|
{
|
|
if (!gtk_emission_check (stop_emissions, object, signal_id))
|
|
gtk_emission_add (&stop_emissions, object, signal_id);
|
|
}
|
|
else
|
|
g_warning ("gtk_signal_emit_stop(): no current emission (%u) for object `%s'",
|
|
signal_id,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
}
|
|
|
|
void
|
|
gtk_signal_emit_stop_by_name (GtkObject *object,
|
|
const gchar *name)
|
|
{
|
|
guint signal_id;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (name != NULL);
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
if (signal_id)
|
|
gtk_signal_emit_stop (object, signal_id);
|
|
else
|
|
g_warning ("gtk_signal_emit_stop_by_name(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
}
|
|
|
|
guint
|
|
gtk_signal_n_emissions (GtkObject *object,
|
|
guint signal_id)
|
|
{
|
|
GList *list;
|
|
guint n;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_OBJECT (object), 0);
|
|
|
|
n = 0;
|
|
for (list = current_emissions; list; list = list->next)
|
|
{
|
|
GtkEmission *emission;
|
|
|
|
emission = list->data;
|
|
|
|
if ((emission->object == object) &&
|
|
(emission->signal_id == signal_id))
|
|
n++;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
guint
|
|
gtk_signal_n_emissions_by_name (GtkObject *object,
|
|
const gchar *name)
|
|
{
|
|
guint signal_id;
|
|
guint n;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_OBJECT (object), 0);
|
|
g_return_val_if_fail (name != NULL, 0);
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
if (signal_id)
|
|
n = gtk_signal_n_emissions (object, signal_id);
|
|
else
|
|
{
|
|
g_warning ("gtk_signal_n_emissions_by_name(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
n = 0;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
guint
|
|
gtk_signal_connect (GtkObject *object,
|
|
const gchar *name,
|
|
GtkSignalFunc func,
|
|
gpointer func_data)
|
|
{
|
|
guint signal_id;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
g_return_val_if_fail (GTK_IS_OBJECT (object), 0);
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
if (!signal_id)
|
|
{
|
|
g_warning ("gtk_signal_connect(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
return 0;
|
|
}
|
|
|
|
return gtk_signal_connect_by_type (object, signal_id,
|
|
func, func_data, NULL,
|
|
FALSE, FALSE, FALSE);
|
|
}
|
|
|
|
guint
|
|
gtk_signal_connect_after (GtkObject *object,
|
|
const gchar *name,
|
|
GtkSignalFunc func,
|
|
gpointer func_data)
|
|
{
|
|
guint signal_id;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
if (!signal_id)
|
|
{
|
|
g_warning ("gtk_signal_connect_after(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
return 0;
|
|
}
|
|
|
|
return gtk_signal_connect_by_type (object, signal_id,
|
|
func, func_data, NULL,
|
|
FALSE, TRUE, FALSE);
|
|
}
|
|
|
|
guint
|
|
gtk_signal_connect_full (GtkObject *object,
|
|
const gchar *name,
|
|
GtkSignalFunc func,
|
|
GtkCallbackMarshal marshal,
|
|
gpointer func_data,
|
|
GtkDestroyNotify destroy_func,
|
|
gint object_signal,
|
|
gint after)
|
|
{
|
|
guint signal_id;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
if (!signal_id)
|
|
{
|
|
g_warning ("gtk_signal_connect_full(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
return 0;
|
|
}
|
|
|
|
if (marshal)
|
|
return gtk_signal_connect_by_type (object, signal_id, (GtkSignalFunc) marshal,
|
|
func_data, destroy_func,
|
|
object_signal, after, TRUE);
|
|
else
|
|
return gtk_signal_connect_by_type (object, signal_id, func,
|
|
func_data, destroy_func,
|
|
object_signal, after, FALSE);
|
|
}
|
|
|
|
guint
|
|
gtk_signal_connect_interp (GtkObject *object,
|
|
const gchar *name,
|
|
GtkCallbackMarshal func,
|
|
gpointer func_data,
|
|
GtkDestroyNotify destroy_func,
|
|
gint after)
|
|
{
|
|
return gtk_signal_connect_full (object, name, NULL, func,
|
|
func_data, destroy_func, FALSE, after);
|
|
}
|
|
|
|
guint
|
|
gtk_signal_connect_object (GtkObject *object,
|
|
const gchar *name,
|
|
GtkSignalFunc func,
|
|
GtkObject *slot_object)
|
|
{
|
|
guint signal_id;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
/* slot_object needs to be treated as ordinary pointer
|
|
*/
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
if (!signal_id)
|
|
{
|
|
g_warning ("gtk_signal_connect_object(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
return 0;
|
|
}
|
|
|
|
return gtk_signal_connect_by_type (object, signal_id,
|
|
func, slot_object, NULL,
|
|
TRUE, FALSE, FALSE);
|
|
}
|
|
|
|
guint
|
|
gtk_signal_connect_object_after (GtkObject *object,
|
|
const gchar *name,
|
|
GtkSignalFunc func,
|
|
GtkObject *slot_object)
|
|
{
|
|
guint signal_id;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
|
|
signal_id = gtk_signal_lookup (name, GTK_OBJECT_TYPE (object));
|
|
if (!signal_id)
|
|
{
|
|
g_warning ("gtk_signal_connect_object_after(): could not find signal \"%s\" in the `%s' class ancestry",
|
|
name,
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)));
|
|
return 0;
|
|
}
|
|
|
|
return gtk_signal_connect_by_type (object, signal_id,
|
|
func, slot_object, NULL,
|
|
TRUE, TRUE, FALSE);
|
|
}
|
|
|
|
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_chunk_new (GtkDisconnectInfo, gtk_disconnect_info_mem_chunk);
|
|
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,
|
|
GtkSignalFunc func,
|
|
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_chunk_new (GtkDisconnectInfo, gtk_disconnect_info_mem_chunk);
|
|
info->object1 = object;
|
|
info->object2 = alive_object;
|
|
|
|
info->signal_handler = gtk_signal_connect_object (object, signal, func, alive_object);
|
|
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_disconnect (GtkObject *object,
|
|
guint handler_id)
|
|
{
|
|
GtkHandler *handler;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (handler_id > 0);
|
|
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
if (handler->id == handler_id)
|
|
{
|
|
handler->id = 0;
|
|
handler->blocked += 1;
|
|
gtk_signal_handler_unref (handler, object);
|
|
return;
|
|
}
|
|
handler = handler->next;
|
|
}
|
|
|
|
g_warning ("gtk_signal_disconnect(): could not find handler (%u)", handler_id);
|
|
}
|
|
|
|
void
|
|
gtk_signal_disconnect_by_func (GtkObject *object,
|
|
GtkSignalFunc func,
|
|
gpointer data)
|
|
{
|
|
GtkHandler *handler;
|
|
gint found_one;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (func != NULL);
|
|
|
|
found_one = FALSE;
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
GtkHandler *handler_next;
|
|
|
|
handler_next = handler->next;
|
|
if ((handler->id > 0) &&
|
|
(handler->func == func) &&
|
|
(handler->func_data == data))
|
|
{
|
|
found_one = TRUE;
|
|
handler->id = 0;
|
|
handler->blocked += 1;
|
|
gtk_signal_handler_unref (handler, object);
|
|
}
|
|
handler = handler_next;
|
|
}
|
|
|
|
if (!found_one)
|
|
g_warning ("gtk_signal_disconnect_by_func(): could not find handler (0x%0lX) containing data (0x%0lX)", (long) func, (long) data);
|
|
}
|
|
|
|
void
|
|
gtk_signal_disconnect_by_data (GtkObject *object,
|
|
gpointer data)
|
|
{
|
|
GtkHandler *handler;
|
|
gint found_one;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
|
|
found_one = FALSE;
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
GtkHandler *handler_next;
|
|
|
|
handler_next = handler->next;
|
|
if ((handler->id > 0) &&
|
|
(handler->func_data == data))
|
|
{
|
|
found_one = TRUE;
|
|
handler->id = 0;
|
|
handler->blocked += 1;
|
|
gtk_signal_handler_unref (handler, object);
|
|
}
|
|
handler = handler_next;
|
|
}
|
|
|
|
if (!found_one)
|
|
g_warning ("gtk_signal_disconnect_by_data(): could not find handler containing data (0x%0lX)", (long) data);
|
|
}
|
|
|
|
void
|
|
gtk_signal_handler_block (GtkObject *object,
|
|
guint handler_id)
|
|
{
|
|
GtkHandler *handler;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (handler_id > 0);
|
|
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
if (handler->id == handler_id)
|
|
{
|
|
handler->blocked += 1;
|
|
return;
|
|
}
|
|
handler = handler->next;
|
|
}
|
|
|
|
g_warning ("gtk_signal_handler_block(): could not find handler (%u)", handler_id);
|
|
}
|
|
|
|
void
|
|
gtk_signal_handler_block_by_func (GtkObject *object,
|
|
GtkSignalFunc func,
|
|
gpointer data)
|
|
{
|
|
GtkHandler *handler;
|
|
gint found_one;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (func != NULL);
|
|
|
|
found_one = FALSE;
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
if ((handler->id > 0) &&
|
|
(handler->func == func) &&
|
|
(handler->func_data == data))
|
|
{
|
|
found_one = TRUE;
|
|
handler->blocked += 1;
|
|
}
|
|
handler = handler->next;
|
|
}
|
|
|
|
if (!found_one)
|
|
g_warning ("gtk_signal_handler_block_by_func(): could not find handler (0x%0lX) containing data (0x%0lX)", (long) func, (long) data);
|
|
}
|
|
|
|
void
|
|
gtk_signal_handler_block_by_data (GtkObject *object,
|
|
gpointer data)
|
|
{
|
|
GtkHandler *handler;
|
|
gint found_one;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
|
|
found_one = FALSE;
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
if ((handler->id > 0) &&
|
|
(handler->func_data == data))
|
|
{
|
|
found_one = TRUE;
|
|
handler->blocked += 1;
|
|
}
|
|
handler = handler->next;
|
|
}
|
|
|
|
if (!found_one)
|
|
g_warning ("gtk_signal_handler_block_by_data(): could not find handler containing data (0x%0lX)", (long) data);
|
|
}
|
|
|
|
void
|
|
gtk_signal_handler_unblock (GtkObject *object,
|
|
guint handler_id)
|
|
{
|
|
GtkHandler *handler;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (handler_id > 0);
|
|
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
if (handler->id == handler_id)
|
|
{
|
|
if (handler->blocked > 0)
|
|
handler->blocked -= 1;
|
|
else
|
|
g_warning ("gtk_signal_handler_unblock(): handler (%u) is not blocked", handler_id);
|
|
return;
|
|
}
|
|
handler = handler->next;
|
|
}
|
|
|
|
g_warning ("gtk_signal_handler_unblock(): could not find handler (%u)", handler_id);
|
|
}
|
|
|
|
void
|
|
gtk_signal_handler_unblock_by_func (GtkObject *object,
|
|
GtkSignalFunc func,
|
|
gpointer data)
|
|
{
|
|
GtkHandler *handler;
|
|
gint found_one;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
g_return_if_fail (func != NULL);
|
|
|
|
found_one = FALSE;
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
if ((handler->id > 0) &&
|
|
(handler->func == func) &&
|
|
(handler->func_data == data) &&
|
|
(handler->blocked > 0))
|
|
{
|
|
handler->blocked -= 1;
|
|
found_one = TRUE;
|
|
}
|
|
handler = handler->next;
|
|
}
|
|
|
|
if (!found_one)
|
|
g_warning ("gtk_signal_handler_unblock_by_func(): could not find blocked handler (0x%0lX) containing data (0x%0lX)", (long) func, (long) data);
|
|
}
|
|
|
|
void
|
|
gtk_signal_handler_unblock_by_data (GtkObject *object,
|
|
gpointer data)
|
|
{
|
|
GtkHandler *handler;
|
|
gint found_one;
|
|
|
|
g_return_if_fail (object != NULL);
|
|
|
|
found_one = FALSE;
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handler)
|
|
{
|
|
if ((handler->id > 0) &&
|
|
(handler->func_data == data) &&
|
|
(handler->blocked > 0))
|
|
{
|
|
handler->blocked -= 1;
|
|
found_one = TRUE;
|
|
}
|
|
handler = handler->next;
|
|
}
|
|
|
|
if (!found_one)
|
|
g_warning ("gtk_signal_handler_unblock_by_data(): could not find blocked handler containing data (0x%0lX)", (long) data);
|
|
}
|
|
|
|
void
|
|
gtk_signal_handlers_destroy (GtkObject *object)
|
|
{
|
|
GtkHandler *handler;
|
|
|
|
/* we make the "optimization" of destroying the first handler in the last
|
|
* place, since we don't want gtk_signal_handler_unref() to reset the objects
|
|
* handler_key data on each removal
|
|
*/
|
|
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
if (handler)
|
|
{
|
|
handler = handler->next;
|
|
while (handler)
|
|
{
|
|
GtkHandler *next;
|
|
|
|
next = handler->next;
|
|
if (handler->id > 0)
|
|
gtk_signal_handler_unref (handler, object);
|
|
handler = next;
|
|
}
|
|
handler = gtk_object_get_data_by_id (object, handler_quark);
|
|
if (handler->id > 0)
|
|
gtk_signal_handler_unref (handler, object);
|
|
}
|
|
}
|
|
|
|
void
|
|
gtk_signal_set_funcs (GtkSignalMarshal marshal_func,
|
|
GtkSignalDestroy destroy_func)
|
|
{
|
|
global_marshaller = marshal_func;
|
|
global_destroy_notify = destroy_func;
|
|
}
|
|
|
|
static guint
|
|
gtk_signal_hash (gconstpointer h)
|
|
{
|
|
register const GtkSignalHash *hash = h;
|
|
|
|
return hash->object_type ^ hash->quark;
|
|
}
|
|
|
|
static gint
|
|
gtk_signal_compare (gconstpointer h1,
|
|
gconstpointer h2)
|
|
{
|
|
register const GtkSignalHash *hash1 = h1;
|
|
register const GtkSignalHash *hash2 = h2;
|
|
|
|
return (hash1->quark == hash2->quark &&
|
|
hash1->object_type == hash2->object_type);
|
|
}
|
|
|
|
static guint
|
|
gtk_alive_disconnecter (GtkDisconnectInfo *info)
|
|
{
|
|
g_return_val_if_fail (info != NULL, 0);
|
|
|
|
gtk_signal_disconnect (info->object1, info->disconnect_handler1);
|
|
gtk_signal_disconnect (info->object1, info->signal_handler);
|
|
gtk_signal_disconnect (info->object2, info->disconnect_handler2);
|
|
|
|
g_mem_chunk_free (gtk_disconnect_info_mem_chunk, info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static GtkHandler*
|
|
gtk_signal_handler_new (void)
|
|
{
|
|
GtkHandler *handler;
|
|
|
|
if (!gtk_handler_free_list)
|
|
{
|
|
GtkHandler *handler_block;
|
|
guint i;
|
|
|
|
handler_block = g_new0 (GtkHandler, HANDLER_BLOCK_SIZE);
|
|
for (i = 1; i < HANDLER_BLOCK_SIZE; i++)
|
|
{
|
|
(handler_block + i)->next = gtk_handler_free_list;
|
|
gtk_handler_free_list = (handler_block + i);
|
|
}
|
|
|
|
handler = handler_block;
|
|
}
|
|
else
|
|
{
|
|
handler = gtk_handler_free_list;
|
|
gtk_handler_free_list = handler->next;
|
|
}
|
|
|
|
handler->id = 0;
|
|
handler->blocked = 0;
|
|
handler->signal_id = 0;
|
|
handler->object_signal = FALSE;
|
|
handler->after = FALSE;
|
|
handler->no_marshal = FALSE;
|
|
handler->ref_count = 1;
|
|
handler->func = NULL;
|
|
handler->func_data = NULL;
|
|
handler->destroy_func = NULL;
|
|
handler->prev = NULL;
|
|
handler->next = NULL;
|
|
|
|
return handler;
|
|
}
|
|
|
|
static void
|
|
gtk_signal_handler_ref (GtkHandler *handler)
|
|
{
|
|
handler->ref_count += 1;
|
|
}
|
|
|
|
static void
|
|
gtk_signal_handler_unref (GtkHandler *handler,
|
|
GtkObject *object)
|
|
{
|
|
if (!handler->ref_count)
|
|
{
|
|
/* FIXME: i wanna get removed somewhen */
|
|
g_warning ("gtk_signal_handler_unref(): handler with ref_count==0!");
|
|
return;
|
|
}
|
|
|
|
handler->ref_count -= 1;
|
|
|
|
if (handler->ref_count == 0)
|
|
{
|
|
if (handler->destroy_func)
|
|
(* handler->destroy_func) (handler->func_data);
|
|
else if (!handler->func && global_destroy_notify)
|
|
(* global_destroy_notify) (handler->func_data);
|
|
|
|
if (handler->prev)
|
|
handler->prev->next = handler->next;
|
|
else if (handler->next)
|
|
gtk_object_set_data_by_id (object, handler_quark, handler->next);
|
|
else
|
|
{
|
|
GTK_OBJECT_UNSET_FLAGS (object, GTK_CONNECTED);
|
|
gtk_object_set_data_by_id (object, handler_quark, NULL);
|
|
}
|
|
if (handler->next)
|
|
handler->next->prev = handler->prev;
|
|
|
|
handler->next = gtk_handler_free_list;
|
|
gtk_handler_free_list = handler;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_signal_handler_insert (GtkObject *object,
|
|
GtkHandler *handler)
|
|
{
|
|
GtkHandler *tmp;
|
|
|
|
/* FIXME: remove */ g_assert (handler->next == NULL);
|
|
/* FIXME: remove */ g_assert (handler->prev == NULL);
|
|
|
|
tmp = gtk_object_get_data_by_id (object, handler_quark);
|
|
if (!tmp)
|
|
{
|
|
GTK_OBJECT_SET_FLAGS (object, GTK_CONNECTED);
|
|
gtk_object_set_data_by_id (object, handler_quark, handler);
|
|
}
|
|
else
|
|
while (tmp)
|
|
{
|
|
if (tmp->signal_id < handler->signal_id)
|
|
{
|
|
if (tmp->prev)
|
|
{
|
|
tmp->prev->next = handler;
|
|
handler->prev = tmp->prev;
|
|
}
|
|
else
|
|
gtk_object_set_data_by_id (object, handler_quark, handler);
|
|
tmp->prev = handler;
|
|
handler->next = tmp;
|
|
break;
|
|
}
|
|
|
|
if (!tmp->next)
|
|
{
|
|
tmp->next = handler;
|
|
handler->prev = tmp;
|
|
break;
|
|
}
|
|
tmp = tmp->next;
|
|
}
|
|
}
|
|
|
|
static GtkObject *gtk_trace_signal_object = NULL;
|
|
|
|
static void
|
|
gtk_signal_real_emit (GtkObject *object,
|
|
guint signal_id,
|
|
GtkArg *params)
|
|
{
|
|
static guint emission_hooks_called = 0;
|
|
GtkSignal signal;
|
|
GtkHandler *handlers;
|
|
GtkSignalFunc signal_func;
|
|
|
|
if (emission_hooks_called)
|
|
{
|
|
g_warning ("gtk_signal_real_emit() may not recurse from emission hooks");
|
|
return;
|
|
}
|
|
|
|
/* gtk_handlers_run() expects a reentrant GtkSignal*, so we allocate
|
|
* it locally on the stack. we save some lookups ourselves with this as well.
|
|
*/
|
|
signal = *LOOKUP_SIGNAL_ID (signal_id);
|
|
if (signal.function_offset)
|
|
signal_func = G_STRUCT_MEMBER (GtkSignalFunc, object->klass, signal.function_offset);
|
|
else
|
|
signal_func = NULL;
|
|
|
|
#ifdef G_ENABLE_DEBUG
|
|
if (gtk_debug_flags & GTK_DEBUG_SIGNALS ||
|
|
object == gtk_trace_signal_object)
|
|
g_message ("%s::%s emitted (object=%p class-method=%p)\n",
|
|
gtk_type_name (GTK_OBJECT_TYPE (object)),
|
|
signal.name,
|
|
object,
|
|
signal_func);
|
|
#endif /* G_ENABLE_DEBUG */
|
|
|
|
if (signal.signal_flags & GTK_RUN_NO_RECURSE &&
|
|
gtk_emission_check (current_emissions, object, signal_id))
|
|
{
|
|
if (!gtk_emission_check (restart_emissions, object, signal_id))
|
|
gtk_emission_add (&restart_emissions, object, signal_id);
|
|
|
|
return;
|
|
}
|
|
|
|
gtk_object_ref (object);
|
|
|
|
gtk_emission_add (¤t_emissions, object, signal_id);
|
|
|
|
emission_restart:
|
|
|
|
if (signal.signal_flags & GTK_RUN_FIRST && signal_func)
|
|
{
|
|
signal.marshaller (object, signal_func, NULL, params);
|
|
|
|
if (stop_emissions && gtk_emission_check (stop_emissions, object, signal_id))
|
|
{
|
|
gtk_emission_remove (&stop_emissions, object, signal_id);
|
|
goto emission_done;
|
|
}
|
|
else if (restart_emissions &&
|
|
signal.signal_flags & GTK_RUN_NO_RECURSE &&
|
|
gtk_emission_check (restart_emissions, object, signal_id))
|
|
{
|
|
gtk_emission_remove (&restart_emissions, object, signal_id);
|
|
|
|
goto emission_restart;
|
|
}
|
|
}
|
|
|
|
if (GTK_OBJECT_CONNECTED (object))
|
|
{
|
|
handlers = gtk_signal_get_handlers (object, signal_id);
|
|
if (handlers)
|
|
{
|
|
gint return_val;
|
|
|
|
return_val = gtk_handlers_run (handlers, &signal, object, params, FALSE);
|
|
switch (return_val)
|
|
{
|
|
case EMISSION_CONTINUE:
|
|
break;
|
|
case EMISSION_RESTART:
|
|
goto emission_restart;
|
|
case EMISSION_DONE:
|
|
goto emission_done;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (signal.signal_flags & GTK_RUN_LAST && signal_func)
|
|
{
|
|
signal.marshaller (object, signal_func, NULL, params);
|
|
|
|
if (stop_emissions && gtk_emission_check (stop_emissions, object, signal_id))
|
|
{
|
|
gtk_emission_remove (&stop_emissions, object, signal_id);
|
|
goto emission_done;
|
|
}
|
|
else if (restart_emissions &&
|
|
signal.signal_flags & GTK_RUN_NO_RECURSE &&
|
|
gtk_emission_check (restart_emissions, object, signal_id))
|
|
{
|
|
gtk_emission_remove (&restart_emissions, object, signal_id);
|
|
|
|
goto emission_restart;
|
|
}
|
|
}
|
|
|
|
if (GTK_OBJECT_CONNECTED (object))
|
|
{
|
|
handlers = gtk_signal_get_handlers (object, signal_id);
|
|
if (handlers)
|
|
{
|
|
gint return_val;
|
|
|
|
return_val = gtk_handlers_run (handlers, &signal, object, params, TRUE);
|
|
switch (return_val)
|
|
{
|
|
case EMISSION_CONTINUE:
|
|
break;
|
|
case EMISSION_RESTART:
|
|
goto emission_restart;
|
|
case EMISSION_DONE:
|
|
goto emission_done;
|
|
}
|
|
}
|
|
}
|
|
|
|
emission_done:
|
|
if (restart_emissions && signal.signal_flags & GTK_RUN_NO_RECURSE)
|
|
gtk_emission_remove (&restart_emissions, object, signal_id);
|
|
|
|
gtk_emission_remove (¤t_emissions, object, signal_id);
|
|
|
|
/* the hook invokation portion may not be moved!
|
|
*/
|
|
if (signal.hook_list && !GTK_OBJECT_DESTROYED (object))
|
|
{
|
|
gpointer data[2];
|
|
|
|
data[0] = &signal;
|
|
data[1] = object;
|
|
emission_hooks_called++;
|
|
g_hook_list_marshal_check (signal.hook_list, TRUE, gtk_emission_hook_marshaller, &data);
|
|
emission_hooks_called--;
|
|
}
|
|
|
|
gtk_object_unref (object);
|
|
}
|
|
|
|
static GtkHandler*
|
|
gtk_signal_get_handlers (GtkObject *object,
|
|
guint signal_id)
|
|
{
|
|
GtkHandler *handlers;
|
|
|
|
handlers = gtk_object_get_data_by_id (object, handler_quark);
|
|
|
|
while (handlers)
|
|
{
|
|
if (handlers->signal_id == signal_id)
|
|
return handlers;
|
|
handlers = handlers->next;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
guint
|
|
gtk_signal_handler_pending (GtkObject *object,
|
|
guint signal_id,
|
|
gboolean may_be_blocked)
|
|
{
|
|
GtkHandler *handlers;
|
|
guint handler_id;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
g_return_val_if_fail (signal_id >= 1, 0);
|
|
|
|
if (GTK_OBJECT_CONNECTED (object))
|
|
handlers = gtk_signal_get_handlers (object, signal_id);
|
|
else
|
|
return 0;
|
|
|
|
handler_id = 0;
|
|
while (handlers && handlers->signal_id == signal_id)
|
|
{
|
|
if (handlers->id > 0 &&
|
|
(may_be_blocked || handlers->blocked == FALSE))
|
|
{
|
|
handler_id = handlers->id;
|
|
break;
|
|
}
|
|
|
|
handlers = handlers->next;
|
|
}
|
|
|
|
return handler_id;
|
|
}
|
|
|
|
guint
|
|
gtk_signal_handler_pending_by_func (GtkObject *object,
|
|
guint signal_id,
|
|
gboolean may_be_blocked,
|
|
GtkSignalFunc func,
|
|
gpointer data)
|
|
{
|
|
GtkHandler *handlers;
|
|
guint handler_id;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
g_return_val_if_fail (func != NULL, 0);
|
|
g_return_val_if_fail (signal_id >= 1, 0);
|
|
|
|
if (GTK_OBJECT_CONNECTED (object))
|
|
handlers = gtk_signal_get_handlers (object, signal_id);
|
|
else
|
|
return 0;
|
|
|
|
handler_id = 0;
|
|
while (handlers && handlers->signal_id == signal_id)
|
|
{
|
|
if (handlers->id > 0 &&
|
|
handlers->func == func &&
|
|
handlers->func_data == data &&
|
|
(may_be_blocked || handlers->blocked == FALSE))
|
|
{
|
|
handler_id = handlers->id;
|
|
break;
|
|
}
|
|
|
|
handlers = handlers->next;
|
|
}
|
|
|
|
return handler_id;
|
|
}
|
|
|
|
guint
|
|
gtk_signal_add_emission_hook (guint signal_id,
|
|
GtkEmissionHook hook_func,
|
|
gpointer data)
|
|
{
|
|
return gtk_signal_add_emission_hook_full (signal_id, hook_func, data, NULL);
|
|
}
|
|
|
|
guint
|
|
gtk_signal_add_emission_hook_full (guint signal_id,
|
|
GtkEmissionHook hook_func,
|
|
gpointer data,
|
|
GDestroyNotify destroy)
|
|
{
|
|
static guint seq_hook_id = 1;
|
|
GtkSignal *signal;
|
|
GHook *hook;
|
|
|
|
g_return_val_if_fail (signal_id > 0, 0);
|
|
g_return_val_if_fail (hook_func != NULL, 0);
|
|
|
|
signal = LOOKUP_SIGNAL_ID (signal_id);
|
|
g_return_val_if_fail (signal != NULL, 0);
|
|
if (signal->signal_flags & GTK_RUN_NO_HOOKS)
|
|
{
|
|
g_warning ("gtk_signal_add_emission_hook_full(): signal \"%s\" does not support emission hooks",
|
|
signal->name);
|
|
return 0;
|
|
}
|
|
|
|
if (!signal->hook_list)
|
|
{
|
|
signal->hook_list = g_new (GHookList, 1);
|
|
g_hook_list_init (signal->hook_list, sizeof (GHook));
|
|
}
|
|
|
|
hook = g_hook_alloc (signal->hook_list);
|
|
hook->data = data;
|
|
hook->func = hook_func;
|
|
hook->destroy = destroy;
|
|
|
|
signal->hook_list->seq_id = seq_hook_id;
|
|
g_hook_prepend (signal->hook_list, hook);
|
|
seq_hook_id = signal->hook_list->seq_id;
|
|
|
|
return hook->hook_id;
|
|
}
|
|
|
|
void
|
|
gtk_signal_remove_emission_hook (guint signal_id,
|
|
guint hook_id)
|
|
{
|
|
GtkSignal *signal;
|
|
|
|
g_return_if_fail (signal_id > 0);
|
|
g_return_if_fail (hook_id > 0);
|
|
|
|
signal = LOOKUP_SIGNAL_ID (signal_id);
|
|
g_return_if_fail (signal != NULL);
|
|
|
|
if (!signal->hook_list || !g_hook_destroy (signal->hook_list, hook_id))
|
|
g_warning ("gtk_signal_remove_emission_hook(): could not find hook (%u)", hook_id);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_emission_hook_marshaller (GHook *hook,
|
|
gpointer data_p)
|
|
{
|
|
gpointer *data = data_p;
|
|
GtkSignal *signal;
|
|
GtkEmissionHook func;
|
|
|
|
signal = data[0];
|
|
func = hook->func;
|
|
|
|
if (!GTK_OBJECT_DESTROYED (data[1]))
|
|
return func (data[1], signal->signal_id, hook->data);
|
|
else
|
|
return TRUE;
|
|
}
|
|
|
|
static guint
|
|
gtk_signal_connect_by_type (GtkObject *object,
|
|
guint signal_id,
|
|
GtkSignalFunc func,
|
|
gpointer func_data,
|
|
GtkSignalDestroy destroy_func,
|
|
gint object_signal,
|
|
gint after,
|
|
gint no_marshal)
|
|
{
|
|
GtkObjectClass *class;
|
|
GtkHandler *handler;
|
|
gint found_it;
|
|
|
|
g_return_val_if_fail (object != NULL, 0);
|
|
g_return_val_if_fail (object->klass != NULL, 0);
|
|
|
|
/* Search through the signals for this object and make
|
|
* sure the one we are adding is valid. We need to perform
|
|
* the lookup on the objects parents as well. If it isn't
|
|
* valid then issue a warning and return.
|
|
* As of now (1998-05-27) this lookup shouldn't be neccessarry
|
|
* anymore since gtk_signal_lookup() has been reworked to only
|
|
* return correct signal ids per class-branch.
|
|
*/
|
|
found_it = FALSE;
|
|
class = object->klass;
|
|
while (class)
|
|
{
|
|
GtkType parent;
|
|
guint *object_signals;
|
|
guint nsignals;
|
|
guint i;
|
|
|
|
object_signals = class->signals;
|
|
nsignals = class->nsignals;
|
|
|
|
for (i = 0; i < nsignals; i++)
|
|
if (object_signals[i] == signal_id)
|
|
{
|
|
found_it = TRUE;
|
|
break;
|
|
}
|
|
|
|
parent = gtk_type_parent (class->type);
|
|
if (parent)
|
|
class = gtk_type_class (parent);
|
|
else
|
|
class = NULL;
|
|
}
|
|
|
|
if (!found_it)
|
|
{
|
|
g_warning ("gtk_signal_connect_by_type(): could not find signal id (%u) in the `%s' class ancestry",
|
|
signal_id,
|
|
gtk_type_name (object->klass->type));
|
|
return 0;
|
|
}
|
|
|
|
handler = gtk_signal_handler_new ();
|
|
handler->id = gtk_handler_id++;
|
|
handler->signal_id = signal_id;
|
|
handler->object_signal = object_signal;
|
|
handler->func = func;
|
|
handler->func_data = func_data;
|
|
handler->destroy_func = destroy_func;
|
|
handler->after = after != FALSE;
|
|
handler->no_marshal = no_marshal;
|
|
|
|
gtk_signal_handler_insert (object, handler);
|
|
return handler->id;
|
|
}
|
|
|
|
static GtkEmission*
|
|
gtk_emission_new (void)
|
|
{
|
|
GtkEmission *emission;
|
|
|
|
if (!gtk_emission_free_list)
|
|
{
|
|
GtkEmissionAllocator *emission_block;
|
|
guint i;
|
|
|
|
emission_block = g_new0 (GtkEmissionAllocator, EMISSION_BLOCK_SIZE);
|
|
for (i = 1; i < EMISSION_BLOCK_SIZE; i++)
|
|
{
|
|
(emission_block + i)->next = gtk_emission_free_list;
|
|
gtk_emission_free_list = (emission_block + i);
|
|
}
|
|
|
|
emission = &emission_block->emission;
|
|
}
|
|
else
|
|
{
|
|
emission = >k_emission_free_list->emission;
|
|
gtk_emission_free_list = gtk_emission_free_list->next;
|
|
}
|
|
|
|
emission->object = NULL;
|
|
emission->signal_id = 0;
|
|
|
|
return emission;
|
|
}
|
|
|
|
static void
|
|
gtk_emission_add (GList **emissions,
|
|
GtkObject *object,
|
|
guint signal_id)
|
|
{
|
|
GtkEmission *emission;
|
|
|
|
g_return_if_fail (emissions != NULL);
|
|
g_return_if_fail (object != NULL);
|
|
|
|
emission = gtk_emission_new ();
|
|
emission->object = object;
|
|
emission->signal_id = signal_id;
|
|
|
|
*emissions = g_list_prepend (*emissions, emission);
|
|
}
|
|
|
|
static void
|
|
gtk_emission_remove (GList **emissions,
|
|
GtkObject *object,
|
|
guint signal_id)
|
|
{
|
|
GList *tmp;
|
|
|
|
g_return_if_fail (emissions != NULL);
|
|
|
|
tmp = *emissions;
|
|
while (tmp)
|
|
{
|
|
GtkEmissionAllocator *ea;
|
|
|
|
ea = tmp->data;
|
|
|
|
if ((ea->emission.object == object) &&
|
|
(ea->emission.signal_id == signal_id))
|
|
{
|
|
*emissions = g_list_remove_link (*emissions, tmp);
|
|
g_list_free (tmp);
|
|
|
|
ea->next = gtk_emission_free_list;
|
|
gtk_emission_free_list = ea;
|
|
break;
|
|
}
|
|
|
|
tmp = tmp->next;
|
|
}
|
|
}
|
|
|
|
static gint
|
|
gtk_emission_check (GList *emissions,
|
|
GtkObject *object,
|
|
guint signal_id)
|
|
{
|
|
GtkEmission *emission;
|
|
GList *tmp;
|
|
|
|
tmp = emissions;
|
|
while (tmp)
|
|
{
|
|
emission = tmp->data;
|
|
tmp = tmp->next;
|
|
|
|
if ((emission->object == object) &&
|
|
(emission->signal_id == signal_id))
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static gint
|
|
gtk_handlers_run (GtkHandler *handlers,
|
|
GtkSignal *signal,
|
|
GtkObject *object,
|
|
GtkArg *params,
|
|
gint after)
|
|
{
|
|
/* *signal is a local copy on the stack of gtk_signal_real_emit(),
|
|
* so we don't need to look it up every time we invoked a function.
|
|
*/
|
|
while (handlers && handlers->signal_id == signal->signal_id)
|
|
{
|
|
GtkHandler *handlers_next;
|
|
|
|
gtk_signal_handler_ref (handlers);
|
|
|
|
if (!handlers->blocked && handlers->after == after)
|
|
{
|
|
if (handlers->func)
|
|
{
|
|
if (handlers->no_marshal)
|
|
(* (GtkCallbackMarshal) handlers->func) (object,
|
|
handlers->func_data,
|
|
signal->nparams,
|
|
params);
|
|
else if (handlers->object_signal)
|
|
/* don't cast with GTK_OBJECT () */
|
|
(* signal->marshaller) ((GtkObject*) handlers->func_data,
|
|
handlers->func,
|
|
handlers->func_data,
|
|
params);
|
|
else
|
|
(* signal->marshaller) (object,
|
|
handlers->func,
|
|
handlers->func_data,
|
|
params);
|
|
}
|
|
else if (global_marshaller)
|
|
(* global_marshaller) (object,
|
|
handlers->func_data,
|
|
signal->nparams,
|
|
params,
|
|
signal->params,
|
|
signal->return_val);
|
|
|
|
if (stop_emissions && gtk_emission_check (stop_emissions,
|
|
object,
|
|
signal->signal_id))
|
|
{
|
|
gtk_emission_remove (&stop_emissions, object, signal->signal_id);
|
|
|
|
gtk_signal_handler_unref (handlers, object);
|
|
|
|
return EMISSION_DONE;
|
|
}
|
|
else if (restart_emissions &&
|
|
signal->signal_flags & GTK_RUN_NO_RECURSE &&
|
|
gtk_emission_check (restart_emissions, object, signal->signal_id))
|
|
{
|
|
gtk_emission_remove (&restart_emissions, object, signal->signal_id);
|
|
|
|
gtk_signal_handler_unref (handlers, object);
|
|
|
|
return EMISSION_RESTART;
|
|
}
|
|
}
|
|
|
|
handlers_next = handlers->next;
|
|
gtk_signal_handler_unref (handlers, object);
|
|
handlers = handlers_next;
|
|
}
|
|
|
|
return EMISSION_CONTINUE;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_signal_collect_params (GtkArg *params,
|
|
guint n_params,
|
|
GtkType *param_types,
|
|
GtkType return_type,
|
|
va_list var_args)
|
|
{
|
|
register GtkArg *last_param;
|
|
register gboolean failed = FALSE;
|
|
|
|
for (last_param = params + n_params; params < last_param; params++)
|
|
{
|
|
register gchar *error;
|
|
|
|
params->name = NULL;
|
|
params->type = *(param_types++);
|
|
GTK_ARG_COLLECT_VALUE (params,
|
|
var_args,
|
|
error);
|
|
if (error)
|
|
{
|
|
failed = TRUE;
|
|
g_warning ("gtk_signal_collect_params(): %s", error);
|
|
g_free (error);
|
|
}
|
|
}
|
|
|
|
params->type = return_type;
|
|
params->name = NULL;
|
|
|
|
return_type = GTK_FUNDAMENTAL_TYPE (return_type);
|
|
if (return_type != GTK_TYPE_NONE)
|
|
{
|
|
if ((return_type >= GTK_TYPE_FLAT_FIRST &&
|
|
return_type <= GTK_TYPE_FLAT_LAST) ||
|
|
(return_type == GTK_TYPE_OBJECT))
|
|
{
|
|
GTK_VALUE_POINTER (*params) = va_arg (var_args, gpointer);
|
|
|
|
if (GTK_VALUE_POINTER (*params) == NULL)
|
|
{
|
|
failed = TRUE;
|
|
g_warning ("gtk_signal_collect_params(): invalid NULL pointer for return argument type `%s'",
|
|
gtk_type_name (params->type));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
failed = TRUE;
|
|
g_warning ("gtk_signal_collect_params(): unsupported return argument type `%s'",
|
|
gtk_type_name (params->type));
|
|
}
|
|
}
|
|
else
|
|
GTK_VALUE_POINTER (*params) = NULL;
|
|
|
|
return failed;
|
|
}
|