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d1d623b072
2001-08-06 Sven Neumann <sven@gimp.org> * glib/gutils.[ch]: added new function g_nullify_pointer(). * gobject/gobject.[ch]: added new functions g_object_[add|remove]_weak_pointer().
226 lines
9.9 KiB
C
226 lines
9.9 KiB
C
/* GObject - GLib Type, Object, Parameter and Signal Library
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* Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public 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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#ifndef __G_OBJECT_H__
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#define __G_OBJECT_H__
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#include <gobject/gtype.h>
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#include <gobject/gvalue.h>
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#include <gobject/gparam.h>
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#include <gobject/gclosure.h>
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#include <gobject/gsignal.h>
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G_BEGIN_DECLS
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/* --- type macros --- */
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#define G_TYPE_IS_OBJECT(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_OBJECT)
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#define G_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), G_TYPE_OBJECT, GObject))
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#define G_OBJECT_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_OBJECT, GObjectClass))
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#define G_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), G_TYPE_OBJECT))
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#define G_IS_OBJECT_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_OBJECT))
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#define G_OBJECT_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), G_TYPE_OBJECT, GObjectClass))
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#define G_OBJECT_TYPE(object) (G_TYPE_FROM_INSTANCE (object))
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#define G_OBJECT_TYPE_NAME(object) (g_type_name (G_OBJECT_TYPE (object)))
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#define G_OBJECT_CLASS_TYPE(class) (G_TYPE_FROM_CLASS (class))
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#define G_OBJECT_CLASS_NAME(class) (g_type_name (G_OBJECT_CLASS_TYPE (class)))
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#define G_VALUE_HOLDS_OBJECT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_OBJECT))
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/* --- typedefs & structures --- */
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typedef struct _GObject GObject;
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typedef struct _GObjectClass GObjectClass;
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typedef struct _GObjectConstructParam GObjectConstructParam;
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typedef void (*GObjectGetPropertyFunc) (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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typedef void (*GObjectSetPropertyFunc) (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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typedef void (*GObjectFinalizeFunc) (GObject *object);
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typedef void (*GWeakNotify) (gpointer data);
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struct _GObject
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{
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GTypeInstance g_type_instance;
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/*< private >*/
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guint ref_count;
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GData *qdata;
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};
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struct _GObjectClass
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{
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GTypeClass g_type_class;
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/*< private >*/
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GSList *construct_properties;
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/* public overridable methods */
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GObject* (*constructor) (GType type,
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guint n_construct_properties,
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GObjectConstructParam *construct_properties);
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void (*set_property) (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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void (*get_property) (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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void (*dispose) (GObject *object);
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void (*finalize) (GObject *object);
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/* seldomly overidden */
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void (*dispatch_properties_changed) (GObject *object,
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guint n_pspecs,
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GParamSpec **pspecs);
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/* signals */
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void (*notify) (GObject *object,
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GParamSpec *pspec);
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};
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struct _GObjectConstructParam
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{
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GParamSpec *pspec;
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GValue *value;
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};
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/* --- prototypes --- */
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void g_object_class_install_property (GObjectClass *oclass,
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guint property_id,
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GParamSpec *pspec);
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GParamSpec* g_object_class_find_property (GObjectClass *oclass,
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const gchar *property_name);
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GParamSpec**g_object_class_list_properties (GObjectClass *oclass,
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guint *n_properties);
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gpointer g_object_new (GType object_type,
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const gchar *first_property_name,
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...);
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gpointer g_object_newv (GType object_type,
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guint n_parameters,
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GParameter *parameters);
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gpointer g_object_new_valist (GType object_type,
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const gchar *first_property_name,
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va_list var_args);
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gpointer g_object_set (gpointer object,
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const gchar *first_property_name,
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...);
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void g_object_get (gpointer object,
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const gchar *first_property_name,
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...);
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gpointer g_object_connect (gpointer object,
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const gchar *signal_spec,
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...);
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gpointer g_object_disconnect (gpointer object,
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const gchar *signal_spec,
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...);
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void g_object_set_valist (GObject *object,
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const gchar *first_property_name,
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va_list var_args);
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void g_object_get_valist (GObject *object,
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const gchar *first_property_name,
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va_list var_args);
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void g_object_set_property (GObject *object,
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const gchar *property_name,
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const GValue *value);
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void g_object_get_property (GObject *object,
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const gchar *property_name,
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GValue *value);
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void g_object_freeze_notify (GObject *object);
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void g_object_notify (GObject *object,
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const gchar *property_name);
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void g_object_thaw_notify (GObject *object);
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gpointer g_object_ref (gpointer object);
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void g_object_unref (gpointer object);
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void g_object_weak_ref (GObject *object,
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GWeakNotify notify,
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gpointer data);
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void g_object_weak_unref (GObject *object,
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GWeakNotify notify,
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gpointer data);
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void g_object_add_weak_pointer (GObject *object,
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gpointer *weak_pointer_location);
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void g_object_remove_weak_pointer (GObject *object,
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gpointer *weak_pointer_location);
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gpointer g_object_get_qdata (GObject *object,
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GQuark quark);
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void g_object_set_qdata (GObject *object,
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GQuark quark,
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gpointer data);
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void g_object_set_qdata_full (GObject *object,
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GQuark quark,
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gpointer data,
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GDestroyNotify destroy);
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gpointer g_object_steal_qdata (GObject *object,
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GQuark quark);
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gpointer g_object_get_data (GObject *object,
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const gchar *key);
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void g_object_set_data (GObject *object,
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const gchar *key,
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gpointer data);
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void g_object_set_data_full (GObject *object,
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const gchar *key,
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gpointer data,
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GDestroyNotify destroy);
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gpointer g_object_steal_data (GObject *object,
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const gchar *key);
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void g_object_watch_closure (GObject *object,
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GClosure *closure);
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GClosure* g_cclosure_new_object (GCallback callback_func,
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gpointer object);
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GClosure* g_cclosure_new_object_swap (GCallback callback_func,
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gpointer object);
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GClosure* g_closure_new_object (guint sizeof_closure,
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GObject *object);
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void g_value_set_object (GValue *value,
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gpointer v_object);
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gpointer g_value_get_object (const GValue *value);
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GObject* g_value_dup_object (const GValue *value);
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guint g_signal_connect_object (gpointer instance,
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const gchar *detailed_signal,
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GCallback c_handler,
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gpointer gobject,
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GConnectFlags connect_flags);
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/*< protected >*/
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void g_object_run_dispose (GObject *object);
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/* --- implementation macros --- */
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#define G_OBJECT_WARN_INVALID_PSPEC(object, pname, property_id, pspec) \
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G_STMT_START { \
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GObject *_object = (GObject*) (object); \
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GParamSpec *_pspec = (GParamSpec*) (pspec); \
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guint _property_id = (property_id); \
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g_warning ("%s: invalid %s id %u for \"%s\" of type `%s' in `%s'", \
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G_STRLOC, \
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(pname), \
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_property_id, \
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_pspec->name, \
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g_type_name (G_PARAM_SPEC_TYPE (_pspec)), \
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G_OBJECT_TYPE_NAME (_object)); \
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} G_STMT_END
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#define G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec) \
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G_OBJECT_WARN_INVALID_PSPEC ((object), "property id", (property_id), (pspec))
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G_END_DECLS
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#endif /* __G_OBJECT_H__ */
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