/usr/include/glib-2.0/gobject/gobject.h is in libglib2.0-dev 2.56.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 | /* GObject - GLib Type, Object, Parameter and Signal Library
* Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __G_OBJECT_H__
#define __G_OBJECT_H__
#if !defined (__GLIB_GOBJECT_H_INSIDE__) && !defined (GOBJECT_COMPILATION)
#error "Only <glib-object.h> can be included directly."
#endif
#include <gobject/gtype.h>
#include <gobject/gvalue.h>
#include <gobject/gparam.h>
#include <gobject/gclosure.h>
#include <gobject/gsignal.h>
#include <gobject/gboxed.h>
G_BEGIN_DECLS
/* --- type macros --- */
/**
* G_TYPE_IS_OBJECT:
* @type: Type id to check
*
* Check if the passed in type id is a %G_TYPE_OBJECT or derived from it.
*
* Returns: %FALSE or %TRUE, indicating whether @type is a %G_TYPE_OBJECT.
*/
#define G_TYPE_IS_OBJECT(type) (G_TYPE_FUNDAMENTAL (type) == G_TYPE_OBJECT)
/**
* G_OBJECT:
* @object: Object which is subject to casting.
*
* Casts a #GObject or derived pointer into a (GObject*) pointer.
* Depending on the current debugging level, this function may invoke
* certain runtime checks to identify invalid casts.
*/
#define G_OBJECT(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), G_TYPE_OBJECT, GObject))
/**
* G_OBJECT_CLASS:
* @class: a valid #GObjectClass
*
* Casts a derived #GObjectClass structure into a #GObjectClass structure.
*/
#define G_OBJECT_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_OBJECT, GObjectClass))
/**
* G_IS_OBJECT:
* @object: Instance to check for being a %G_TYPE_OBJECT.
*
* Checks whether a valid #GTypeInstance pointer is of type %G_TYPE_OBJECT.
*/
#if GLIB_VERSION_MAX_ALLOWED >= GLIB_VERSION_2_42
#define G_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_FUNDAMENTAL_TYPE ((object), G_TYPE_OBJECT))
#else
#define G_IS_OBJECT(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), G_TYPE_OBJECT))
#endif
/**
* G_IS_OBJECT_CLASS:
* @class: a #GObjectClass
*
* Checks whether @class "is a" valid #GObjectClass structure of type
* %G_TYPE_OBJECT or derived.
*/
#define G_IS_OBJECT_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_OBJECT))
/**
* G_OBJECT_GET_CLASS:
* @object: a #GObject instance.
*
* Get the class structure associated to a #GObject instance.
*
* Returns: pointer to object class structure.
*/
#define G_OBJECT_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), G_TYPE_OBJECT, GObjectClass))
/**
* G_OBJECT_TYPE:
* @object: Object to return the type id for.
*
* Get the type id of an object.
*
* Returns: Type id of @object.
*/
#define G_OBJECT_TYPE(object) (G_TYPE_FROM_INSTANCE (object))
/**
* G_OBJECT_TYPE_NAME:
* @object: Object to return the type name for.
*
* Get the name of an object's type.
*
* Returns: Type name of @object. The string is owned by the type system and
* should not be freed.
*/
#define G_OBJECT_TYPE_NAME(object) (g_type_name (G_OBJECT_TYPE (object)))
/**
* G_OBJECT_CLASS_TYPE:
* @class: a valid #GObjectClass
*
* Get the type id of a class structure.
*
* Returns: Type id of @class.
*/
#define G_OBJECT_CLASS_TYPE(class) (G_TYPE_FROM_CLASS (class))
/**
* G_OBJECT_CLASS_NAME:
* @class: a valid #GObjectClass
*
* Return the name of a class structure's type.
*
* Returns: Type name of @class. The string is owned by the type system and
* should not be freed.
*/
#define G_OBJECT_CLASS_NAME(class) (g_type_name (G_OBJECT_CLASS_TYPE (class)))
/**
* G_VALUE_HOLDS_OBJECT:
* @value: a valid #GValue structure
*
* Checks whether the given #GValue can hold values derived from type %G_TYPE_OBJECT.
*
* Returns: %TRUE on success.
*/
#define G_VALUE_HOLDS_OBJECT(value) (G_TYPE_CHECK_VALUE_TYPE ((value), G_TYPE_OBJECT))
/* --- type macros --- */
/**
* G_TYPE_INITIALLY_UNOWNED:
*
* The type for #GInitiallyUnowned.
*/
#define G_TYPE_INITIALLY_UNOWNED (g_initially_unowned_get_type())
/**
* G_INITIALLY_UNOWNED:
* @object: Object which is subject to casting.
*
* Casts a #GInitiallyUnowned or derived pointer into a (GInitiallyUnowned*)
* pointer. Depending on the current debugging level, this function may invoke
* certain runtime checks to identify invalid casts.
*/
#define G_INITIALLY_UNOWNED(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), G_TYPE_INITIALLY_UNOWNED, GInitiallyUnowned))
/**
* G_INITIALLY_UNOWNED_CLASS:
* @class: a valid #GInitiallyUnownedClass
*
* Casts a derived #GInitiallyUnownedClass structure into a
* #GInitiallyUnownedClass structure.
*/
#define G_INITIALLY_UNOWNED_CLASS(class) (G_TYPE_CHECK_CLASS_CAST ((class), G_TYPE_INITIALLY_UNOWNED, GInitiallyUnownedClass))
/**
* G_IS_INITIALLY_UNOWNED:
* @object: Instance to check for being a %G_TYPE_INITIALLY_UNOWNED.
*
* Checks whether a valid #GTypeInstance pointer is of type %G_TYPE_INITIALLY_UNOWNED.
*/
#define G_IS_INITIALLY_UNOWNED(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), G_TYPE_INITIALLY_UNOWNED))
/**
* G_IS_INITIALLY_UNOWNED_CLASS:
* @class: a #GInitiallyUnownedClass
*
* Checks whether @class "is a" valid #GInitiallyUnownedClass structure of type
* %G_TYPE_INITIALLY_UNOWNED or derived.
*/
#define G_IS_INITIALLY_UNOWNED_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), G_TYPE_INITIALLY_UNOWNED))
/**
* G_INITIALLY_UNOWNED_GET_CLASS:
* @object: a #GInitiallyUnowned instance.
*
* Get the class structure associated to a #GInitiallyUnowned instance.
*
* Returns: pointer to object class structure.
*/
#define G_INITIALLY_UNOWNED_GET_CLASS(object) (G_TYPE_INSTANCE_GET_CLASS ((object), G_TYPE_INITIALLY_UNOWNED, GInitiallyUnownedClass))
/* GInitiallyUnowned ia a GObject with initially floating reference count */
/* --- typedefs & structures --- */
typedef struct _GObject GObject;
typedef struct _GObjectClass GObjectClass;
typedef struct _GObject GInitiallyUnowned;
typedef struct _GObjectClass GInitiallyUnownedClass;
typedef struct _GObjectConstructParam GObjectConstructParam;
/**
* GObjectGetPropertyFunc:
* @object: a #GObject
* @property_id: the numeric id under which the property was registered with
* g_object_class_install_property().
* @value: a #GValue to return the property value in
* @pspec: the #GParamSpec describing the property
*
* The type of the @get_property function of #GObjectClass.
*/
typedef void (*GObjectGetPropertyFunc) (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
/**
* GObjectSetPropertyFunc:
* @object: a #GObject
* @property_id: the numeric id under which the property was registered with
* g_object_class_install_property().
* @value: the new value for the property
* @pspec: the #GParamSpec describing the property
*
* The type of the @set_property function of #GObjectClass.
*/
typedef void (*GObjectSetPropertyFunc) (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
/**
* GObjectFinalizeFunc:
* @object: the #GObject being finalized
*
* The type of the @finalize function of #GObjectClass.
*/
typedef void (*GObjectFinalizeFunc) (GObject *object);
/**
* GWeakNotify:
* @data: data that was provided when the weak reference was established
* @where_the_object_was: the object being finalized
*
* A #GWeakNotify function can be added to an object as a callback that gets
* triggered when the object is finalized. Since the object is already being
* finalized when the #GWeakNotify is called, there's not much you could do
* with the object, apart from e.g. using its address as hash-index or the like.
*/
typedef void (*GWeakNotify) (gpointer data,
GObject *where_the_object_was);
/**
* GObject:
*
* All the fields in the GObject structure are private
* to the #GObject implementation and should never be accessed directly.
*/
struct _GObject
{
GTypeInstance g_type_instance;
/*< private >*/
volatile guint ref_count;
GData *qdata;
};
/**
* GObjectClass:
* @g_type_class: the parent class
* @constructor: the @constructor function is called by g_object_new () to
* complete the object initialization after all the construction properties are
* set. The first thing a @constructor implementation must do is chain up to the
* @constructor of the parent class. Overriding @constructor should be rarely
* needed, e.g. to handle construct properties, or to implement singletons.
* @set_property: the generic setter for all properties of this type. Should be
* overridden for every type with properties. If implementations of
* @set_property don't emit property change notification explicitly, this will
* be done implicitly by the type system. However, if the notify signal is
* emitted explicitly, the type system will not emit it a second time.
* @get_property: the generic getter for all properties of this type. Should be
* overridden for every type with properties.
* @dispose: the @dispose function is supposed to drop all references to other
* objects, but keep the instance otherwise intact, so that client method
* invocations still work. It may be run multiple times (due to reference
* loops). Before returning, @dispose should chain up to the @dispose method
* of the parent class.
* @finalize: instance finalization function, should finish the finalization of
* the instance begun in @dispose and chain up to the @finalize method of the
* parent class.
* @dispatch_properties_changed: emits property change notification for a bunch
* of properties. Overriding @dispatch_properties_changed should be rarely
* needed.
* @notify: the class closure for the notify signal
* @constructed: the @constructed function is called by g_object_new() as the
* final step of the object creation process. At the point of the call, all
* construction properties have been set on the object. The purpose of this
* call is to allow for object initialisation steps that can only be performed
* after construction properties have been set. @constructed implementors
* should chain up to the @constructed call of their parent class to allow it
* to complete its initialisation.
*
* The class structure for the GObject type.
*
* |[<!-- language="C" -->
* // Example of implementing a singleton using a constructor.
* static MySingleton *the_singleton = NULL;
*
* static GObject*
* my_singleton_constructor (GType type,
* guint n_construct_params,
* GObjectConstructParam *construct_params)
* {
* GObject *object;
*
* if (!the_singleton)
* {
* object = G_OBJECT_CLASS (parent_class)->constructor (type,
* n_construct_params,
* construct_params);
* the_singleton = MY_SINGLETON (object);
* }
* else
* object = g_object_ref (G_OBJECT (the_singleton));
*
* return object;
* }
* ]|
*/
struct _GObjectClass
{
GTypeClass g_type_class;
/*< private >*/
GSList *construct_properties;
/*< public >*/
/* seldom overidden */
GObject* (*constructor) (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_properties);
/* overridable methods */
void (*set_property) (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
void (*get_property) (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
void (*dispose) (GObject *object);
void (*finalize) (GObject *object);
/* seldom overidden */
void (*dispatch_properties_changed) (GObject *object,
guint n_pspecs,
GParamSpec **pspecs);
/* signals */
void (*notify) (GObject *object,
GParamSpec *pspec);
/* called when done constructing */
void (*constructed) (GObject *object);
/*< private >*/
gsize flags;
/* padding */
gpointer pdummy[6];
};
/**
* GObjectConstructParam:
* @pspec: the #GParamSpec of the construct parameter
* @value: the value to set the parameter to
*
* The GObjectConstructParam struct is an auxiliary
* structure used to hand #GParamSpec/#GValue pairs to the @constructor of
* a #GObjectClass.
*/
struct _GObjectConstructParam
{
GParamSpec *pspec;
GValue *value;
};
/**
* GInitiallyUnowned:
*
* All the fields in the GInitiallyUnowned structure
* are private to the #GInitiallyUnowned implementation and should never be
* accessed directly.
*/
/**
* GInitiallyUnownedClass:
*
* The class structure for the GInitiallyUnowned type.
*/
/* --- prototypes --- */
GLIB_AVAILABLE_IN_ALL
GType g_initially_unowned_get_type (void);
GLIB_AVAILABLE_IN_ALL
void g_object_class_install_property (GObjectClass *oclass,
guint property_id,
GParamSpec *pspec);
GLIB_AVAILABLE_IN_ALL
GParamSpec* g_object_class_find_property (GObjectClass *oclass,
const gchar *property_name);
GLIB_AVAILABLE_IN_ALL
GParamSpec**g_object_class_list_properties (GObjectClass *oclass,
guint *n_properties);
GLIB_AVAILABLE_IN_ALL
void g_object_class_override_property (GObjectClass *oclass,
guint property_id,
const gchar *name);
GLIB_AVAILABLE_IN_ALL
void g_object_class_install_properties (GObjectClass *oclass,
guint n_pspecs,
GParamSpec **pspecs);
GLIB_AVAILABLE_IN_ALL
void g_object_interface_install_property (gpointer g_iface,
GParamSpec *pspec);
GLIB_AVAILABLE_IN_ALL
GParamSpec* g_object_interface_find_property (gpointer g_iface,
const gchar *property_name);
GLIB_AVAILABLE_IN_ALL
GParamSpec**g_object_interface_list_properties (gpointer g_iface,
guint *n_properties_p);
GLIB_AVAILABLE_IN_ALL
GType g_object_get_type (void) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
gpointer g_object_new (GType object_type,
const gchar *first_property_name,
...);
GLIB_AVAILABLE_IN_2_54
GObject* g_object_new_with_properties (GType object_type,
guint n_properties,
const char *names[],
const GValue values[]);
GLIB_DEPRECATED_IN_2_54_FOR(g_object_new_with_properties)
gpointer g_object_newv (GType object_type,
guint n_parameters,
GParameter *parameters);
GLIB_AVAILABLE_IN_ALL
GObject* g_object_new_valist (GType object_type,
const gchar *first_property_name,
va_list var_args);
GLIB_AVAILABLE_IN_ALL
void g_object_set (gpointer object,
const gchar *first_property_name,
...) G_GNUC_NULL_TERMINATED;
GLIB_AVAILABLE_IN_ALL
void g_object_get (gpointer object,
const gchar *first_property_name,
...) G_GNUC_NULL_TERMINATED;
GLIB_AVAILABLE_IN_ALL
gpointer g_object_connect (gpointer object,
const gchar *signal_spec,
...) G_GNUC_NULL_TERMINATED;
GLIB_AVAILABLE_IN_ALL
void g_object_disconnect (gpointer object,
const gchar *signal_spec,
...) G_GNUC_NULL_TERMINATED;
GLIB_AVAILABLE_IN_2_54
void g_object_setv (GObject *object,
guint n_properties,
const gchar *names[],
const GValue values[]);
GLIB_AVAILABLE_IN_ALL
void g_object_set_valist (GObject *object,
const gchar *first_property_name,
va_list var_args);
GLIB_AVAILABLE_IN_2_54
void g_object_getv (GObject *object,
guint n_properties,
const gchar *names[],
GValue values[]);
GLIB_AVAILABLE_IN_ALL
void g_object_get_valist (GObject *object,
const gchar *first_property_name,
va_list var_args);
GLIB_AVAILABLE_IN_ALL
void g_object_set_property (GObject *object,
const gchar *property_name,
const GValue *value);
GLIB_AVAILABLE_IN_ALL
void g_object_get_property (GObject *object,
const gchar *property_name,
GValue *value);
GLIB_AVAILABLE_IN_ALL
void g_object_freeze_notify (GObject *object);
GLIB_AVAILABLE_IN_ALL
void g_object_notify (GObject *object,
const gchar *property_name);
GLIB_AVAILABLE_IN_ALL
void g_object_notify_by_pspec (GObject *object,
GParamSpec *pspec);
GLIB_AVAILABLE_IN_ALL
void g_object_thaw_notify (GObject *object);
GLIB_AVAILABLE_IN_ALL
gboolean g_object_is_floating (gpointer object);
GLIB_AVAILABLE_IN_ALL
gpointer g_object_ref_sink (gpointer object);
GLIB_AVAILABLE_IN_ALL
gpointer g_object_ref (gpointer object);
GLIB_AVAILABLE_IN_ALL
void g_object_unref (gpointer object);
GLIB_AVAILABLE_IN_ALL
void g_object_weak_ref (GObject *object,
GWeakNotify notify,
gpointer data);
GLIB_AVAILABLE_IN_ALL
void g_object_weak_unref (GObject *object,
GWeakNotify notify,
gpointer data);
GLIB_AVAILABLE_IN_ALL
void g_object_add_weak_pointer (GObject *object,
gpointer *weak_pointer_location);
GLIB_AVAILABLE_IN_ALL
void g_object_remove_weak_pointer (GObject *object,
gpointer *weak_pointer_location);
#if defined(__GNUC__) && !defined(__cplusplus) && GLIB_VERSION_MAX_ALLOWED >= GLIB_VERSION_2_56
/* Make reference APIs type safe with macros */
#define g_object_ref(Obj) ((__typeof__(Obj)) (g_object_ref) (Obj))
#define g_object_ref_sink(Obj) ((__typeof__(Obj)) (g_object_ref_sink) (Obj))
#endif
/**
* GToggleNotify:
* @data: Callback data passed to g_object_add_toggle_ref()
* @object: The object on which g_object_add_toggle_ref() was called.
* @is_last_ref: %TRUE if the toggle reference is now the
* last reference to the object. %FALSE if the toggle
* reference was the last reference and there are now other
* references.
*
* A callback function used for notification when the state
* of a toggle reference changes. See g_object_add_toggle_ref().
*/
typedef void (*GToggleNotify) (gpointer data,
GObject *object,
gboolean is_last_ref);
GLIB_AVAILABLE_IN_ALL
void g_object_add_toggle_ref (GObject *object,
GToggleNotify notify,
gpointer data);
GLIB_AVAILABLE_IN_ALL
void g_object_remove_toggle_ref (GObject *object,
GToggleNotify notify,
gpointer data);
GLIB_AVAILABLE_IN_ALL
gpointer g_object_get_qdata (GObject *object,
GQuark quark);
GLIB_AVAILABLE_IN_ALL
void g_object_set_qdata (GObject *object,
GQuark quark,
gpointer data);
GLIB_AVAILABLE_IN_ALL
void g_object_set_qdata_full (GObject *object,
GQuark quark,
gpointer data,
GDestroyNotify destroy);
GLIB_AVAILABLE_IN_ALL
gpointer g_object_steal_qdata (GObject *object,
GQuark quark);
GLIB_AVAILABLE_IN_2_34
gpointer g_object_dup_qdata (GObject *object,
GQuark quark,
GDuplicateFunc dup_func,
gpointer user_data);
GLIB_AVAILABLE_IN_2_34
gboolean g_object_replace_qdata (GObject *object,
GQuark quark,
gpointer oldval,
gpointer newval,
GDestroyNotify destroy,
GDestroyNotify *old_destroy);
GLIB_AVAILABLE_IN_ALL
gpointer g_object_get_data (GObject *object,
const gchar *key);
GLIB_AVAILABLE_IN_ALL
void g_object_set_data (GObject *object,
const gchar *key,
gpointer data);
GLIB_AVAILABLE_IN_ALL
void g_object_set_data_full (GObject *object,
const gchar *key,
gpointer data,
GDestroyNotify destroy);
GLIB_AVAILABLE_IN_ALL
gpointer g_object_steal_data (GObject *object,
const gchar *key);
GLIB_AVAILABLE_IN_2_34
gpointer g_object_dup_data (GObject *object,
const gchar *key,
GDuplicateFunc dup_func,
gpointer user_data);
GLIB_AVAILABLE_IN_2_34
gboolean g_object_replace_data (GObject *object,
const gchar *key,
gpointer oldval,
gpointer newval,
GDestroyNotify destroy,
GDestroyNotify *old_destroy);
GLIB_AVAILABLE_IN_ALL
void g_object_watch_closure (GObject *object,
GClosure *closure);
GLIB_AVAILABLE_IN_ALL
GClosure* g_cclosure_new_object (GCallback callback_func,
GObject *object);
GLIB_AVAILABLE_IN_ALL
GClosure* g_cclosure_new_object_swap (GCallback callback_func,
GObject *object);
GLIB_AVAILABLE_IN_ALL
GClosure* g_closure_new_object (guint sizeof_closure,
GObject *object);
GLIB_AVAILABLE_IN_ALL
void g_value_set_object (GValue *value,
gpointer v_object);
GLIB_AVAILABLE_IN_ALL
gpointer g_value_get_object (const GValue *value);
GLIB_AVAILABLE_IN_ALL
gpointer g_value_dup_object (const GValue *value);
GLIB_AVAILABLE_IN_ALL
gulong g_signal_connect_object (gpointer instance,
const gchar *detailed_signal,
GCallback c_handler,
gpointer gobject,
GConnectFlags connect_flags);
/*< protected >*/
GLIB_AVAILABLE_IN_ALL
void g_object_force_floating (GObject *object);
GLIB_AVAILABLE_IN_ALL
void g_object_run_dispose (GObject *object);
GLIB_AVAILABLE_IN_ALL
void g_value_take_object (GValue *value,
gpointer v_object);
GLIB_DEPRECATED_FOR(g_value_take_object)
void g_value_set_object_take_ownership (GValue *value,
gpointer v_object);
GLIB_DEPRECATED
gsize g_object_compat_control (gsize what,
gpointer data);
/* --- implementation macros --- */
#define G_OBJECT_WARN_INVALID_PSPEC(object, pname, property_id, pspec) \
G_STMT_START { \
GObject *_glib__object = (GObject*) (object); \
GParamSpec *_glib__pspec = (GParamSpec*) (pspec); \
guint _glib__property_id = (property_id); \
g_warning ("%s:%d: invalid %s id %u for \"%s\" of type '%s' in '%s'", \
__FILE__, __LINE__, \
(pname), \
_glib__property_id, \
_glib__pspec->name, \
g_type_name (G_PARAM_SPEC_TYPE (_glib__pspec)), \
G_OBJECT_TYPE_NAME (_glib__object)); \
} G_STMT_END
/**
* G_OBJECT_WARN_INVALID_PROPERTY_ID:
* @object: the #GObject on which set_property() or get_property() was called
* @property_id: the numeric id of the property
* @pspec: the #GParamSpec of the property
*
* This macro should be used to emit a standard warning about unexpected
* properties in set_property() and get_property() implementations.
*/
#define G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec) \
G_OBJECT_WARN_INVALID_PSPEC ((object), "property", (property_id), (pspec))
GLIB_AVAILABLE_IN_ALL
void g_clear_object (volatile GObject **object_ptr);
#define g_clear_object(object_ptr) g_clear_pointer ((object_ptr), g_object_unref)
/**
* g_set_object: (skip)
* @object_ptr: a pointer to a #GObject reference
* @new_object: (nullable) (transfer none): a pointer to the new #GObject to
* assign to it, or %NULL to clear the pointer
*
* Updates a #GObject pointer to refer to @new_object. It increments the
* reference count of @new_object (if non-%NULL), decrements the reference
* count of the current value of @object_ptr (if non-%NULL), and assigns
* @new_object to @object_ptr. The assignment is not atomic.
*
* @object_ptr must not be %NULL.
*
* A macro is also included that allows this function to be used without
* pointer casts. The function itself is static inline, so its address may vary
* between compilation units.
*
* One convenient usage of this function is in implementing property setters:
* |[
* void
* foo_set_bar (Foo *foo,
* Bar *new_bar)
* {
* g_return_if_fail (IS_FOO (foo));
* g_return_if_fail (new_bar == NULL || IS_BAR (new_bar));
*
* if (g_set_object (&foo->bar, new_bar))
* g_object_notify (foo, "bar");
* }
* ]|
*
* Returns: %TRUE if the value of @object_ptr changed, %FALSE otherwise
*
* Since: 2.44
*/
static inline gboolean
(g_set_object) (GObject **object_ptr,
GObject *new_object)
{
GObject *old_object = *object_ptr;
/* rely on g_object_[un]ref() to check the pointers are actually GObjects;
* elide a (object_ptr != NULL) check because most of the time we will be
* operating on struct members with a constant offset, so a NULL check would
* not catch bugs
*/
if (old_object == new_object)
return FALSE;
if (new_object != NULL)
g_object_ref (new_object);
*object_ptr = new_object;
if (old_object != NULL)
g_object_unref (old_object);
return TRUE;
}
#define g_set_object(object_ptr, new_object) \
(/* Check types match. */ \
0 ? *(object_ptr) = (new_object), FALSE : \
(g_set_object) ((GObject **) (object_ptr), (GObject *) (new_object)) \
)
/**
* g_clear_weak_pointer: (skip)
* @weak_pointer_location: The memory address of a pointer
*
* Clears a weak reference to a #GObject.
*
* @weak_pointer_location must not be %NULL.
*
* If the weak reference is %NULL then this function does nothing.
* Otherwise, the weak reference to the object is removed for that location
* and the pointer is set to %NULL.
*
* A macro is also included that allows this function to be used without
* pointer casts. The function itself is static inline, so its address may vary
* between compilation units.
*
* Since: 2.56
*/
static inline void
(g_clear_weak_pointer) (gpointer *weak_pointer_location)
{
GObject *object = (GObject *) *weak_pointer_location;
if (object != NULL)
{
g_object_remove_weak_pointer (object, weak_pointer_location);
*weak_pointer_location = NULL;
}
}
#define g_clear_weak_pointer(weak_pointer_location) \
(/* Check types match. */ \
(g_clear_weak_pointer) ((gpointer *) (weak_pointer_location)) \
)
/**
* g_set_weak_pointer: (skip)
* @weak_pointer_location: the memory address of a pointer
* @new_object: (nullable) (transfer none): a pointer to the new #GObject to
* assign to it, or %NULL to clear the pointer
*
* Updates a pointer to weakly refer to @new_object. It assigns @new_object
* to @weak_pointer_location and ensures that @weak_pointer_location will
* automaticaly be set to %NULL if @new_object gets destroyed. The assignment
* is not atomic. The weak reference is not thread-safe, see
* g_object_add_weak_pointer() for details.
*
* @weak_pointer_location must not be %NULL.
*
* A macro is also included that allows this function to be used without
* pointer casts. The function itself is static inline, so its address may vary
* between compilation units.
*
* One convenient usage of this function is in implementing property setters:
* |[
* void
* foo_set_bar (Foo *foo,
* Bar *new_bar)
* {
* g_return_if_fail (IS_FOO (foo));
* g_return_if_fail (new_bar == NULL || IS_BAR (new_bar));
*
* if (g_set_weak_pointer (&foo->bar, new_bar))
* g_object_notify (foo, "bar");
* }
* ]|
*
* Returns: %TRUE if the value of @weak_pointer_location changed, %FALSE otherwise
*
* Since: 2.56
*/
static inline gboolean
(g_set_weak_pointer) (gpointer *weak_pointer_location,
GObject *new_object)
{
GObject *old_object = (GObject *) *weak_pointer_location;
/* elide a (weak_pointer_location != NULL) check because most of the time we
* will be operating on struct members with a constant offset, so a NULL
* check would not catch bugs
*/
if (old_object == new_object)
return FALSE;
if (old_object != NULL)
g_object_remove_weak_pointer (old_object, weak_pointer_location);
*weak_pointer_location = new_object;
if (new_object != NULL)
g_object_add_weak_pointer (new_object, weak_pointer_location);
return TRUE;
}
#define g_set_weak_pointer(weak_pointer_location, new_object) \
(/* Check types match. */ \
0 ? *(weak_pointer_location) = (new_object), FALSE : \
(g_set_weak_pointer) ((gpointer *) (weak_pointer_location), (GObject *) (new_object)) \
)
typedef struct {
/*<private>*/
union { gpointer p; } priv;
} GWeakRef;
GLIB_AVAILABLE_IN_ALL
void g_weak_ref_init (GWeakRef *weak_ref,
gpointer object);
GLIB_AVAILABLE_IN_ALL
void g_weak_ref_clear (GWeakRef *weak_ref);
GLIB_AVAILABLE_IN_ALL
gpointer g_weak_ref_get (GWeakRef *weak_ref);
GLIB_AVAILABLE_IN_ALL
void g_weak_ref_set (GWeakRef *weak_ref,
gpointer object);
G_END_DECLS
#endif /* __G_OBJECT_H__ */
|