1 /* ATK - Accessibility Toolkit
2 * Copyright 2001 Sun Microsystems Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 #if defined(ATK_DISABLE_SINGLE_INCLUDES) && !defined (__ATK_H_INSIDE__) && !defined (ATK_COMPILATION)
21 #error "Only <atk/atk.h> can be included directly."
24 #ifndef __ATK_OBJECT_H__
25 #define __ATK_OBJECT_H__
27 #include <glib-object.h>
28 #include <atk/atkstate.h>
29 #include <atk/atkrelationtype.h>
34 * AtkObject represents the minimum information all accessible objects
35 * return. This information includes accessible name, accessible
36 * description, role and state of the object, as well information about
37 * its parent and children. It is also possible to obtain more specific
38 * accessibility information about a component if it supports one or more
39 * of the following interfaces:
45 *@ATK_ROLE_INVALID: Invalid role
46 *@ATK_ROLE_ACCEL_LABEL: A label which represents an accelerator
47 *@ATK_ROLE_ALERT: An object which is an alert to the user. Assistive Technologies typically respond to ATK_ROLE_ALERT by reading the entire onscreen contents of containers advertising this role. Should be used for warning dialogs, etc.
48 *@ATK_ROLE_ANIMATION: An object which is an animated image
49 *@ATK_ROLE_ARROW: An arrow in one of the four cardinal directions
50 *@ATK_ROLE_CALENDAR: An object that displays a calendar and allows the user to select a date
51 *@ATK_ROLE_CANVAS: An object that can be drawn into and is used to trap events
52 *@ATK_ROLE_CHECK_BOX: A choice that can be checked or unchecked and provides a separate indicator for the current state
53 *@ATK_ROLE_CHECK_MENU_ITEM: A menu item with a check box
54 *@ATK_ROLE_COLOR_CHOOSER: A specialized dialog that lets the user choose a color
55 *@ATK_ROLE_COLUMN_HEADER: The header for a column of data
56 *@ATK_ROLE_COMBO_BOX: A collapsible list of choices the user can select from
57 *@ATK_ROLE_DATE_EDITOR: An object whose purpose is to allow a user to edit a date
58 *@ATK_ROLE_DESKTOP_ICON: An inconifed internal frame within a DESKTOP_PANE
59 *@ATK_ROLE_DESKTOP_FRAME: A pane that supports internal frames and iconified versions of those internal frames
60 *@ATK_ROLE_DIAL: An object whose purpose is to allow a user to set a value
61 *@ATK_ROLE_DIALOG: A top level window with title bar and a border
62 *@ATK_ROLE_DIRECTORY_PANE: A pane that allows the user to navigate through and select the contents of a directory
63 *@ATK_ROLE_DRAWING_AREA: An object used for drawing custom user interface elements
64 *@ATK_ROLE_FILE_CHOOSER: A specialized dialog that lets the user choose a file
65 *@ATK_ROLE_FILLER: A object that fills up space in a user interface
66 *@ATK_ROLE_FONT_CHOOSER: A specialized dialog that lets the user choose a font
67 *@ATK_ROLE_FRAME: A top level window with a title bar, border, menubar, etc.
68 *@ATK_ROLE_GLASS_PANE: A pane that is guaranteed to be painted on top of all panes beneath it
69 *@ATK_ROLE_HTML_CONTAINER: A document container for HTML, whose children represent the document content
70 *@ATK_ROLE_ICON: A small fixed size picture, typically used to decorate components
71 *@ATK_ROLE_IMAGE: An object whose primary purpose is to display an image
72 *@ATK_ROLE_INTERNAL_FRAME: A frame-like object that is clipped by a desktop pane
73 *@ATK_ROLE_LABEL: An object used to present an icon or short string in an interface
74 *@ATK_ROLE_LAYERED_PANE: A specialized pane that allows its children to be drawn in layers, providing a form of stacking order
75 *@ATK_ROLE_LIST: An object that presents a list of objects to the user and allows the user to select one or more of them
76 *@ATK_ROLE_LIST_ITEM: An object that represents an element of a list
77 *@ATK_ROLE_MENU: An object usually found inside a menu bar that contains a list of actions the user can choose from
78 *@ATK_ROLE_MENU_BAR: An object usually drawn at the top of the primary dialog box of an application that contains a list of menus the user can choose from
79 *@ATK_ROLE_MENU_ITEM: An object usually contained in a menu that presents an action the user can choose
80 *@ATK_ROLE_OPTION_PANE: A specialized pane whose primary use is inside a DIALOG
81 *@ATK_ROLE_PAGE_TAB: An object that is a child of a page tab list
82 *@ATK_ROLE_PAGE_TAB_LIST: An object that presents a series of panels (or page tabs), one at a time, through some mechanism provided by the object
83 *@ATK_ROLE_PANEL: A generic container that is often used to group objects
84 *@ATK_ROLE_PASSWORD_TEXT: A text object uses for passwords, or other places where the text content is not shown visibly to the user
85 *@ATK_ROLE_POPUP_MENU: A temporary window that is usually used to offer the user a list of choices, and then hides when the user selects one of those choices
86 *@ATK_ROLE_PROGRESS_BAR: An object used to indicate how much of a task has been completed
87 *@ATK_ROLE_PUSH_BUTTON: An object the user can manipulate to tell the application to do something
88 *@ATK_ROLE_RADIO_BUTTON: A specialized check box that will cause other radio buttons in the same group to become unchecked when this one is checked
89 *@ATK_ROLE_RADIO_MENU_ITEM: A check menu item which belongs to a group. At each instant exactly one of the radio menu items from a group is selected
90 *@ATK_ROLE_ROOT_PANE: A specialized pane that has a glass pane and a layered pane as its children
91 *@ATK_ROLE_ROW_HEADER: The header for a row of data
92 *@ATK_ROLE_SCROLL_BAR: An object usually used to allow a user to incrementally view a large amount of data.
93 *@ATK_ROLE_SCROLL_PANE: An object that allows a user to incrementally view a large amount of information
94 *@ATK_ROLE_SEPARATOR: An object usually contained in a menu to provide a visible and logical separation of the contents in a menu
95 *@ATK_ROLE_SLIDER: An object that allows the user to select from a bounded range
96 *@ATK_ROLE_SPLIT_PANE: A specialized panel that presents two other panels at the same time
97 *@ATK_ROLE_SPIN_BUTTON: An object used to get an integer or floating point number from the user
98 *@ATK_ROLE_STATUSBAR: An object which reports messages of minor importance to the user
99 *@ATK_ROLE_TABLE: An object used to represent information in terms of rows and columns
100 *@ATK_ROLE_TABLE_CELL: A cell in a table
101 *@ATK_ROLE_TABLE_COLUMN_HEADER: The header for a column of a table
102 *@ATK_ROLE_TABLE_ROW_HEADER: The header for a row of a table
103 *@ATK_ROLE_TEAR_OFF_MENU_ITEM: A menu item used to tear off and reattach its menu
104 *@ATK_ROLE_TERMINAL: An object that represents an accessible terminal. @Since: ATK-0.6
105 *@ATK_ROLE_TEXT: An object that presents text to the user
106 *@ATK_ROLE_TOGGLE_BUTTON: A specialized push button that can be checked or unchecked, but does not provide a separate indicator for the current state
107 *@ATK_ROLE_TOOL_BAR: A bar or palette usually composed of push buttons or toggle buttons
108 *@ATK_ROLE_TOOL_TIP: An object that provides information about another object
109 *@ATK_ROLE_TREE: An object used to represent hierarchical information to the user
110 *@ATK_ROLE_TREE_TABLE: An object capable of expanding and collapsing rows as well as showing multiple columns of data. @Since: ATK-0.7
111 *@ATK_ROLE_UNKNOWN: The object contains some Accessible information, but its role is not known
112 *@ATK_ROLE_VIEWPORT: An object usually used in a scroll pane
113 *@ATK_ROLE_WINDOW: A top level window with no title or border.
114 *@ATK_ROLE_HEADER: An object that serves as a document header. @Since: ATK-1.1.1
115 *@ATK_ROLE_FOOTER: An object that serves as a document footer. @Since: ATK-1.1.1
116 *@ATK_ROLE_PARAGRAPH: An object which is contains a paragraph of text content. @Since: ATK-1.1.1
117 *@ATK_ROLE_RULER: An object which describes margins and tab stops, etc. for text objects which it controls (should have CONTROLLER_FOR relation to such). @Since: ATK-1.1.1
118 *@ATK_ROLE_APPLICATION: The object is an application object, which may contain @ATK_ROLE_FRAME objects or other types of accessibles. The root accessible of any application's ATK hierarchy should have ATK_ROLE_APPLICATION. @Since: ATK-1.1.4
119 *@ATK_ROLE_AUTOCOMPLETE: The object is a dialog or list containing items for insertion into an entry widget, for instance a list of words for completion of a text entry. @Since: ATK-1.3
120 *@ATK_ROLE_EDITBAR: The object is an editable text object in a toolbar. @Since: ATK-1.5
121 *@ATK_ROLE_EMBEDDED: The object is an embedded container within a document or panel. This role is a grouping "hint" indicating that the contained objects share a context. @Since: ATK-1.7.2
122 *@ATK_ROLE_ENTRY: The object is a component whose textual content may be entered or modified by the user, provided @ATK_STATE_EDITABLE is present. @Since: ATK-1.11
123 *@ATK_ROLE_CHART: The object is a graphical depiction of quantitative data. It may contain multiple subelements whose attributes and/or description may be queried to obtain both the quantitative data and information about how the data is being presented. The LABELLED_BY relation is particularly important in interpreting objects of this type, as is the accessible-description property. @Since: ATK-1.11
124 *@ATK_ROLE_CAPTION: The object contains descriptive information, usually textual, about another user interface element such as a table, chart, or image. @Since: ATK-1.11
125 *@ATK_ROLE_DOCUMENT_FRAME: The object is a visual frame or container which contains a view of document content. Document frames may occur within another Document instance, in which case the second document may be said to be embedded in the containing instance. HTML frames are often ROLE_DOCUMENT_FRAME. Either this object, or a singleton descendant, should implement the Document interface. @Since: ATK-1.11
126 *@ATK_ROLE_HEADING: The object serves as a heading for content which follows it in a document. The 'heading level' of the heading, if availabe, may be obtained by querying the object's attributes.
127 *@ATK_ROLE_PAGE: The object is a containing instance which encapsulates a page of information. @ATK_ROLE_PAGE is used in documents and content which support a paginated navigation model. @Since: ATK-1.11
128 *@ATK_ROLE_SECTION: The object is a containing instance of document content which constitutes a particular 'logical' section of the document. The type of content within a section, and the nature of the section division itself, may be obtained by querying the object's attributes. Sections may be nested. @Since: ATK-1.11
129 *@ATK_ROLE_REDUNDANT_OBJECT: The object is redundant with another object in the hierarchy, and is exposed for purely technical reasons. Objects of this role should normally be ignored by clients. @Since: ATK-1.11
130 *@ATK_ROLE_FORM: The object is a container for form controls, for instance as part of a
131 * web form or user-input form within a document. This role is primarily a tag/convenience for
132 * clients when navigating complex documents, it is not expected that ordinary GUI containers will
133 * always have ATK_ROLE_FORM. @Since: ATK-1.12.0
134 *@ATK_ROLE_LINK: The object is a hypertext anchor, i.e. a "link" in a
135 * hypertext document. Such objects are distinct from 'inline'
136 * content which may also use the Hypertext/Hyperlink interfaces
137 * to indicate the range/location within a text object where
138 * an inline or embedded object lies. @Since: ATK-1.12.1
139 *@ATK_ROLE_INPUT_METHOD_WINDOW: The object is a window or similar viewport
140 * which is used to allow composition or input of a 'complex character',
141 * in other words it is an "input method window." @Since: ATK-1.12.1
142 *@ATK_ROLE_TABLE_ROW: A row in a table. @Since: ATK-2.0.2
143 *@ATK_ROLE_TREE_ITEM: An object that represents an element of a tree. @Since: ATK-2.0.2
144 *@ATK_ROLE_DOCUMENT_SPREADSHEET: A document frame which contains a spreadsheet. @Since: ATK-2.0.2
145 *@ATK_ROLE_DOCUMENT_PRESENTATION: A document frame which contains a presentation or slide content. @Since: ATK-2.0.2
146 *@ATK_ROLE_DOCUMENT_TEXT: A document frame which contains textual content, such as found in a word processing application. @Since: ATK-2.0.2
147 *@ATK_ROLE_DOCUMENT_WEB: A document frame which contains HTML or other markup suitable for display in a web browser. @Since: ATK-2.0.2
148 *@ATK_ROLE_DOCUMENT_EMAIL: A document frame which contains email content to be displayed or composed either in plain text or HTML. @Since: ATK-2.0.2
149 *@ATK_ROLE_COMMENT: An object found within a document and designed to present a comment, note, or other annotation. In some cases, this object might not be visible until activated. @Since: ATK-2.0.2
150 *@ATK_ROLE_LIST_BOX: A non-collapsible list of choices the user can select from. @Since: ATK-2.0.2
151 *@ATK_ROLE_GROUPING: A group of related widgets. This group typically has a label. @Since: ATK-2.0.2
152 *@ATK_ROLE_IMAGE_MAP: An image map object. Usually a graphic with multiple hotspots, where each hotspot can be activated resulting in the loading of another document or section of a document. @Since: ATK-2.0.2
153 *@ATK_ROLE_NOTIFICATION: A transitory object designed to present a message to the user, typically at the desktop level rather than inside a particular application. @Since: ATK-2.0.2
154 *@ATK_ROLE_INFO_BAR: An object designed to present a message to the user within an existing window. @Since: ATK-2.0.2
155 *@ATK_ROLE_LAST_DEFINED: not a valid role, used for finding end of the enumeration
157 * Describes the role of an object
159 * These are the built-in enumerated roles that UI components can have in
160 * ATK. Other roles may be added at runtime, so an AtkRole >=
161 * ATK_ROLE_LAST_DEFINED is not necessarily an error.
165 ATK_ROLE_INVALID = 0,
166 ATK_ROLE_ACCEL_LABEL,
173 ATK_ROLE_CHECK_MENU_ITEM,
174 ATK_ROLE_COLOR_CHOOSER,
175 ATK_ROLE_COLUMN_HEADER,
177 ATK_ROLE_DATE_EDITOR,
178 ATK_ROLE_DESKTOP_ICON,
179 ATK_ROLE_DESKTOP_FRAME,
182 ATK_ROLE_DIRECTORY_PANE,
183 ATK_ROLE_DRAWING_AREA,
184 ATK_ROLE_FILE_CHOOSER,
186 ATK_ROLE_FONT_CHOOSER,
189 ATK_ROLE_HTML_CONTAINER,
192 ATK_ROLE_INTERNAL_FRAME,
194 ATK_ROLE_LAYERED_PANE,
200 ATK_ROLE_OPTION_PANE,
202 ATK_ROLE_PAGE_TAB_LIST,
204 ATK_ROLE_PASSWORD_TEXT,
206 ATK_ROLE_PROGRESS_BAR,
207 ATK_ROLE_PUSH_BUTTON,
208 ATK_ROLE_RADIO_BUTTON,
209 ATK_ROLE_RADIO_MENU_ITEM,
213 ATK_ROLE_SCROLL_PANE,
217 ATK_ROLE_SPIN_BUTTON,
221 ATK_ROLE_TABLE_COLUMN_HEADER,
222 ATK_ROLE_TABLE_ROW_HEADER,
223 ATK_ROLE_TEAR_OFF_MENU_ITEM,
226 ATK_ROLE_TOGGLE_BUTTON,
238 ATK_ROLE_APPLICATION,
239 ATK_ROLE_AUTOCOMPLETE,
245 ATK_ROLE_DOCUMENT_FRAME,
249 ATK_ROLE_REDUNDANT_OBJECT,
252 ATK_ROLE_INPUT_METHOD_WINDOW,
255 ATK_ROLE_DOCUMENT_SPREADSHEET,
256 ATK_ROLE_DOCUMENT_PRESENTATION,
257 ATK_ROLE_DOCUMENT_TEXT,
258 ATK_ROLE_DOCUMENT_WEB,
259 ATK_ROLE_DOCUMENT_EMAIL,
264 ATK_ROLE_NOTIFICATION,
266 ATK_ROLE_LAST_DEFINED
269 AtkRole atk_role_register (const gchar *name);
273 *@ATK_LAYER_INVALID: The object does not have a layer
274 *@ATK_LAYER_BACKGROUND: This layer is reserved for the desktop background
275 *@ATK_LAYER_CANVAS: This layer is used for Canvas components
276 *@ATK_LAYER_WIDGET: This layer is normally used for components
277 *@ATK_LAYER_MDI: This layer is used for layered components
278 *@ATK_LAYER_POPUP: This layer is used for popup components, such as menus
279 *@ATK_LAYER_OVERLAY: This layer is reserved for future use.
280 *@ATK_LAYER_WINDOW: This layer is used for toplevel windows.
282 * Describes the layer of a component
284 * These enumerated "layer values" are used when determining which UI
285 * rendering layer a component is drawn into, which can help in making
286 * determinations of when components occlude one another.
291 ATK_LAYER_BACKGROUND,
303 * This is a singly-linked list (a #GSList) of #AtkAttribute. It is
304 * used by atk_text_get_run_attributes(), atk_text_get_default_attributes()
305 * and atk_editable_text_set_run_attributes()
307 typedef GSList AtkAttributeSet;
311 * @name: The attribute name. Call atk_text_attr_get_name()
312 * @value: the value of the attribute, represented as a string.
313 * Call atk_text_attr_get_value() for those which are strings.
314 * For values which are numbers, the string representation of the number
317 * A string name/value pair representing a text attribute.
319 typedef struct _AtkAttribute AtkAttribute;
321 struct _AtkAttribute {
326 #define ATK_TYPE_OBJECT (atk_object_get_type ())
327 #define ATK_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_OBJECT, AtkObject))
328 #define ATK_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ATK_TYPE_OBJECT, AtkObjectClass))
329 #define ATK_IS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_OBJECT))
330 #define ATK_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ATK_TYPE_OBJECT))
331 #define ATK_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ATK_TYPE_OBJECT, AtkObjectClass))
333 #define ATK_TYPE_IMPLEMENTOR (atk_implementor_get_type ())
334 #define ATK_IS_IMPLEMENTOR(obj) G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_IMPLEMENTOR)
335 #define ATK_IMPLEMENTOR(obj) G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_IMPLEMENTOR, AtkImplementor)
336 #define ATK_IMPLEMENTOR_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), ATK_TYPE_IMPLEMENTOR, AtkImplementorIface))
339 typedef struct _AtkImplementor AtkImplementor; /* dummy typedef */
340 typedef struct _AtkImplementorIface AtkImplementorIface;
343 typedef struct _AtkObject AtkObject;
344 typedef struct _AtkObjectClass AtkObjectClass;
345 typedef struct _AtkRelationSet AtkRelationSet;
346 typedef struct _AtkStateSet AtkStateSet;
350 * @property_name: The name of the ATK property which is being presented or which has been changed.
351 * @old_value: The old property value, NULL; in some contexts this value is undefined (see note below).
352 * @new_value: The new value of the named property.
354 * @note: For most properties the old_value field of AtkPropertyValues will
355 * not contain a valid value.
357 * Currently, the only property for which old_value is used is
358 * accessible-state; for instance if there is a focus state the
359 * property change handler will be called for the object which lost the focus
360 * with the old_value containing an AtkState value corresponding to focused
361 * and the property change handler will be called for the object which
362 * received the focus with the new_value containing an AtkState value
363 * corresponding to focused.
366 struct _AtkPropertyValues
368 const gchar *property_name;
373 typedef struct _AtkPropertyValues AtkPropertyValues;
375 typedef gboolean (*AtkFunction) (gpointer data);
377 * For most properties the old_value field of AtkPropertyValues will
378 * not contain a valid value.
380 * Currently, the only property for which old_value is used is
381 * accessible-state; for instance if there is a focus state the
382 * property change handler will be called for the object which lost the focus
383 * with the old_value containing an AtkState value corresponding to focused
384 * and the property change handler will be called for the object which
385 * received the focus with the new_value containing an AtkState value
386 * corresponding to focused.
388 typedef void (*AtkPropertyChangeHandler) (AtkObject*, AtkPropertyValues*);
397 AtkObject *accessible_parent;
399 AtkRelationSet *relation_set;
403 struct _AtkObjectClass
408 * Gets the accessible name of the object
410 const gchar* (* get_name) (AtkObject *accessible);
412 * Gets the accessible description of the object
414 const gchar* (* get_description) (AtkObject *accessible);
416 * Gets the accessible parent of the object
418 AtkObject* (*get_parent) (AtkObject *accessible);
421 * Gets the number of accessible children of the object
423 gint (* get_n_children) (AtkObject *accessible);
425 * Returns a reference to the specified accessible child of the object.
426 * The accessible children are 0-based so the first accessible child is
427 * at index 0, the second at index 1 and so on.
429 AtkObject* (* ref_child) (AtkObject *accessible,
432 * Gets the 0-based index of this object in its parent; returns -1 if the
433 * object does not have an accessible parent.
435 gint (* get_index_in_parent) (AtkObject *accessible);
437 * Gets the RelationSet associated with the object
439 AtkRelationSet* (* ref_relation_set) (AtkObject *accessible);
441 * Gets the role of the object
443 AtkRole (* get_role) (AtkObject *accessible);
444 AtkLayer (* get_layer) (AtkObject *accessible);
445 gint (* get_mdi_zorder) (AtkObject *accessible);
447 * Gets the state set of the object
449 AtkStateSet* (* ref_state_set) (AtkObject *accessible);
451 * Sets the accessible name of the object
453 void (* set_name) (AtkObject *accessible,
456 * Sets the accessible description of the object
458 void (* set_description) (AtkObject *accessible,
459 const gchar *description);
461 * Sets the accessible parent of the object
463 void (* set_parent) (AtkObject *accessible,
466 * Sets the accessible role of the object
468 void (* set_role) (AtkObject *accessible,
471 * Specifies a function to be called when a property changes value
473 guint (* connect_property_change_handler) (AtkObject
475 AtkPropertyChangeHandler *handler);
477 * Removes a property change handler which was specified using
478 * connect_property_change_handler
480 void (* remove_property_change_handler) (AtkObject
484 void (* initialize) (AtkObject *accessible,
487 * The signal handler which is executed when there is a change in the
488 * children of the object
490 void (* children_changed) (AtkObject *accessible,
492 gpointer changed_child);
494 * The signal handler which is executed when there is a focus event
497 void (* focus_event) (AtkObject *accessible,
500 * The signal handler which is executed when there is a property_change
501 * signal for an object.
503 void (* property_change) (AtkObject *accessible,
504 AtkPropertyValues *values);
506 * The signal handler which is executed when there is a state_change
507 * signal for an object.
509 void (* state_change) (AtkObject *accessible,
513 * The signal handler which is executed when there is a change in the
514 * visible data for an object
516 void (*visible_data_changed) (AtkObject *accessible);
519 * The signal handler which is executed when there is a change in the
520 * 'active' child or children of the object, for instance when
521 * interior focus changes in a table or list. This signal should be emitted
522 * by objects whose state includes ATK_STATE_MANAGES_DESCENDANTS.
524 void (*active_descendant_changed) (AtkObject *accessible,
528 * Gets a list of properties applied to this object as a whole, as an #AtkAttributeSet consisting of name-value pairs.
531 AtkAttributeSet* (*get_attributes) (AtkObject *accessible);
536 GType atk_object_get_type (void);
538 struct _AtkImplementorIface
540 GTypeInterface parent;
542 AtkObject* (*ref_accessible) (AtkImplementor *implementor);
544 GType atk_implementor_get_type (void);
547 * This method uses the ref_accessible method in AtkImplementorIface,
548 * if the object's class implements AtkImplementorIface.
549 * Otherwise it returns %NULL.
552 * Note also that because this method may return flyweight objects,
553 * it increments the returned AtkObject's reference count.
554 * Therefore it is the responsibility of the calling
555 * program to unreference the object when no longer needed.
556 * (c.f. gtk_widget_get_accessible() where this is not the case).
558 AtkObject* atk_implementor_ref_accessible (AtkImplementor *implementor);
561 * Properties directly supported by AtkObject
564 const gchar* atk_object_get_name (AtkObject *accessible);
565 const gchar* atk_object_get_description (AtkObject *accessible);
566 AtkObject* atk_object_get_parent (AtkObject *accessible);
567 gint atk_object_get_n_accessible_children (AtkObject *accessible);
568 AtkObject* atk_object_ref_accessible_child (AtkObject *accessible,
570 AtkRelationSet* atk_object_ref_relation_set (AtkObject *accessible);
571 AtkRole atk_object_get_role (AtkObject *accessible);
572 #ifndef ATK_DISABLE_DEPRECATED
573 AtkLayer atk_object_get_layer (AtkObject *accessible);
574 gint atk_object_get_mdi_zorder (AtkObject *accessible);
575 #endif /* ATK_DISABLE_DEPRECATED */
576 AtkAttributeSet* atk_object_get_attributes (AtkObject *accessible);
577 AtkStateSet* atk_object_ref_state_set (AtkObject *accessible);
578 gint atk_object_get_index_in_parent (AtkObject *accessible);
579 void atk_object_set_name (AtkObject *accessible,
581 void atk_object_set_description (AtkObject *accessible,
582 const gchar *description);
583 void atk_object_set_parent (AtkObject *accessible,
585 void atk_object_set_role (AtkObject *accessible,
589 guint atk_object_connect_property_change_handler (AtkObject *accessible,
590 AtkPropertyChangeHandler *handler);
591 void atk_object_remove_property_change_handler (AtkObject *accessible,
594 void atk_object_notify_state_change (AtkObject *accessible,
597 void atk_object_initialize (AtkObject *accessible,
600 const gchar* atk_role_get_name (AtkRole role);
601 AtkRole atk_role_for_name (const gchar *name);
604 /* NEW in 1.1: convenience API */
605 gboolean atk_object_add_relationship (AtkObject *object,
606 AtkRelationType relationship,
608 gboolean atk_object_remove_relationship (AtkObject *object,
609 AtkRelationType relationship,
611 const gchar* atk_role_get_localized_name (AtkRole role);
617 * Note: the properties which are registered with the GType
618 * property registry, for type ATK_TYPE_OBJECT, are as follows:
621 * "accessible-description"
622 * "accessible-parent"
625 * "accessible-component-layer"
626 * "accessible-component-zorder"
627 * "accessible-table-caption"
628 * "accessible-table-column-description"
629 * "accessible-table-column-header"
630 * "accessible-table-row-description"
631 * "accessible-table-row-header"
632 * "accessible-table-summary"
635 * accessibility property change listeners should use the
636 * normal GObject property interfaces and "property-change"
637 * signal handler semantics to interpret the property change
638 * information relayed from AtkObject.
639 * (AtkObject instances will connect to the "notify"
640 * signal in their host objects, and relay the signals when appropriate).
643 /* For other signals, see related interfaces
654 * The usage model for obtaining these interface instances is:
655 * ATK_<interfacename>_GET_IFACE(GObject *accessible),
656 * where accessible, though specified as a GObject, is
657 * the AtkObject instance being queried.
658 * More usually, the interface will be used via a cast to the
659 * interface's corresponding "type":
661 * AtkText textImpl = ATK_TEXT(accessible);
664 * cpos = atk_text_get_caret_position(textImpl);
667 * If it's known in advance that accessible implements AtkTextIface,
668 * this is shortened to:
670 * cpos = atk_text_get_caret_position (ATK_TEXT (accessible));
675 #endif /* __ATK_OBJECT_H__ */