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, see <http://www.gnu.org/licenses/>.
18 #if defined(ATK_DISABLE_SINGLE_INCLUDES) && !defined (__ATK_H_INSIDE__) && !defined (ATK_COMPILATION)
19 #error "Only <atk/atk.h> can be included directly."
22 #ifndef __ATK_OBJECT_H__
23 #define __ATK_OBJECT_H__
25 #include <glib-object.h>
26 #include <atk/atkstate.h>
27 #include <atk/atkrelationtype.h>
32 * AtkObject represents the minimum information all accessible objects
33 * return. This information includes accessible name, accessible
34 * description, role and state of the object, as well information about
35 * its parent and children. It is also possible to obtain more specific
36 * accessibility information about a component if it supports one or more
37 * of the following interfaces:
43 *@ATK_ROLE_INVALID: Invalid role
44 *@ATK_ROLE_ACCEL_LABEL: A label which represents an accelerator
45 *@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.
46 *@ATK_ROLE_ANIMATION: An object which is an animated image
47 *@ATK_ROLE_ARROW: An arrow in one of the four cardinal directions
48 *@ATK_ROLE_CALENDAR: An object that displays a calendar and allows the user to select a date
49 *@ATK_ROLE_CANVAS: An object that can be drawn into and is used to trap events
50 *@ATK_ROLE_CHECK_BOX: A choice that can be checked or unchecked and provides a separate indicator for the current state
51 *@ATK_ROLE_CHECK_MENU_ITEM: A menu item with a check box
52 *@ATK_ROLE_COLOR_CHOOSER: A specialized dialog that lets the user choose a color
53 *@ATK_ROLE_COLUMN_HEADER: The header for a column of data
54 *@ATK_ROLE_COMBO_BOX: A collapsible list of choices the user can select from
55 *@ATK_ROLE_DATE_EDITOR: An object whose purpose is to allow a user to edit a date
56 *@ATK_ROLE_DESKTOP_ICON: An inconifed internal frame within a DESKTOP_PANE
57 *@ATK_ROLE_DESKTOP_FRAME: A pane that supports internal frames and iconified versions of those internal frames
58 *@ATK_ROLE_DIAL: An object whose purpose is to allow a user to set a value
59 *@ATK_ROLE_DIALOG: A top level window with title bar and a border
60 *@ATK_ROLE_DIRECTORY_PANE: A pane that allows the user to navigate through and select the contents of a directory
61 *@ATK_ROLE_DRAWING_AREA: An object used for drawing custom user interface elements
62 *@ATK_ROLE_FILE_CHOOSER: A specialized dialog that lets the user choose a file
63 *@ATK_ROLE_FILLER: A object that fills up space in a user interface
64 *@ATK_ROLE_FONT_CHOOSER: A specialized dialog that lets the user choose a font
65 *@ATK_ROLE_FRAME: A top level window with a title bar, border, menubar, etc.
66 *@ATK_ROLE_GLASS_PANE: A pane that is guaranteed to be painted on top of all panes beneath it
67 *@ATK_ROLE_HTML_CONTAINER: A document container for HTML, whose children represent the document content
68 *@ATK_ROLE_ICON: A small fixed size picture, typically used to decorate components
69 *@ATK_ROLE_IMAGE: An object whose primary purpose is to display an image
70 *@ATK_ROLE_INTERNAL_FRAME: A frame-like object that is clipped by a desktop pane
71 *@ATK_ROLE_LABEL: An object used to present an icon or short string in an interface
72 *@ATK_ROLE_LAYERED_PANE: A specialized pane that allows its children to be drawn in layers, providing a form of stacking order
73 *@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
74 *@ATK_ROLE_LIST_ITEM: An object that represents an element of a list
75 *@ATK_ROLE_MENU: An object usually found inside a menu bar that contains a list of actions the user can choose from
76 *@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
77 *@ATK_ROLE_MENU_ITEM: An object usually contained in a menu that presents an action the user can choose
78 *@ATK_ROLE_OPTION_PANE: A specialized pane whose primary use is inside a DIALOG
79 *@ATK_ROLE_PAGE_TAB: An object that is a child of a page tab list
80 *@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
81 *@ATK_ROLE_PANEL: A generic container that is often used to group objects
82 *@ATK_ROLE_PASSWORD_TEXT: A text object uses for passwords, or other places where the text content is not shown visibly to the user
83 *@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
84 *@ATK_ROLE_PROGRESS_BAR: An object used to indicate how much of a task has been completed
85 *@ATK_ROLE_PUSH_BUTTON: An object the user can manipulate to tell the application to do something
86 *@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
87 *@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
88 *@ATK_ROLE_ROOT_PANE: A specialized pane that has a glass pane and a layered pane as its children
89 *@ATK_ROLE_ROW_HEADER: The header for a row of data
90 *@ATK_ROLE_SCROLL_BAR: An object usually used to allow a user to incrementally view a large amount of data.
91 *@ATK_ROLE_SCROLL_PANE: An object that allows a user to incrementally view a large amount of information
92 *@ATK_ROLE_SEPARATOR: An object usually contained in a menu to provide a visible and logical separation of the contents in a menu
93 *@ATK_ROLE_SLIDER: An object that allows the user to select from a bounded range
94 *@ATK_ROLE_SPLIT_PANE: A specialized panel that presents two other panels at the same time
95 *@ATK_ROLE_SPIN_BUTTON: An object used to get an integer or floating point number from the user
96 *@ATK_ROLE_STATUSBAR: An object which reports messages of minor importance to the user
97 *@ATK_ROLE_TABLE: An object used to represent information in terms of rows and columns
98 *@ATK_ROLE_TABLE_CELL: A cell in a table
99 *@ATK_ROLE_TABLE_COLUMN_HEADER: The header for a column of a table
100 *@ATK_ROLE_TABLE_ROW_HEADER: The header for a row of a table
101 *@ATK_ROLE_TEAR_OFF_MENU_ITEM: A menu item used to tear off and reattach its menu
102 *@ATK_ROLE_TERMINAL: An object that represents an accessible terminal. @Since: ATK-0.6
103 *@ATK_ROLE_TEXT: An object that presents text to the user
104 *@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
105 *@ATK_ROLE_TOOL_BAR: A bar or palette usually composed of push buttons or toggle buttons
106 *@ATK_ROLE_TOOL_TIP: An object that provides information about another object
107 *@ATK_ROLE_TREE: An object used to represent hierarchical information to the user
108 *@ATK_ROLE_TREE_TABLE: An object capable of expanding and collapsing rows as well as showing multiple columns of data. @Since: ATK-0.7
109 *@ATK_ROLE_UNKNOWN: The object contains some Accessible information, but its role is not known
110 *@ATK_ROLE_VIEWPORT: An object usually used in a scroll pane
111 *@ATK_ROLE_WINDOW: A top level window with no title or border.
112 *@ATK_ROLE_HEADER: An object that serves as a document header. @Since: ATK-1.1.1
113 *@ATK_ROLE_FOOTER: An object that serves as a document footer. @Since: ATK-1.1.1
114 *@ATK_ROLE_PARAGRAPH: An object which is contains a paragraph of text content. @Since: ATK-1.1.1
115 *@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
116 *@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
117 *@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
118 *@ATK_ROLE_EDITBAR: The object is an editable text object in a toolbar. @Since: ATK-1.5
119 *@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
120 *@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
121 *@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
122 *@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
123 *@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
124 *@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.
125 *@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
126 *@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
127 *@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
128 *@ATK_ROLE_FORM: The object is a container for form controls, for instance as part of a
129 * web form or user-input form within a document. This role is primarily a tag/convenience for
130 * clients when navigating complex documents, it is not expected that ordinary GUI containers will
131 * always have ATK_ROLE_FORM. @Since: ATK-1.12.0
132 *@ATK_ROLE_LINK: The object is a hypertext anchor, i.e. a "link" in a
133 * hypertext document. Such objects are distinct from 'inline'
134 * content which may also use the Hypertext/Hyperlink interfaces
135 * to indicate the range/location within a text object where
136 * an inline or embedded object lies. @Since: ATK-1.12.1
137 *@ATK_ROLE_INPUT_METHOD_WINDOW: The object is a window or similar viewport
138 * which is used to allow composition or input of a 'complex character',
139 * in other words it is an "input method window." @Since: ATK-1.12.1
140 *@ATK_ROLE_TABLE_ROW: A row in a table. @Since: ATK-2.1.0
141 *@ATK_ROLE_TREE_ITEM: An object that represents an element of a tree. @Since: ATK-2.1.0
142 *@ATK_ROLE_DOCUMENT_SPREADSHEET: A document frame which contains a spreadsheet. @Since: ATK-2.1.0
143 *@ATK_ROLE_DOCUMENT_PRESENTATION: A document frame which contains a presentation or slide content. @Since: ATK-2.1.0
144 *@ATK_ROLE_DOCUMENT_TEXT: A document frame which contains textual content, such as found in a word processing application. @Since: ATK-2.1.0
145 *@ATK_ROLE_DOCUMENT_WEB: A document frame which contains HTML or other markup suitable for display in a web browser. @Since: ATK-2.1.0
146 *@ATK_ROLE_DOCUMENT_EMAIL: A document frame which contains email content to be displayed or composed either in plain text or HTML. @Since: ATK-2.1.0
147 *@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-2.1.0
148 *@ATK_ROLE_LIST_BOX: A non-collapsible list of choices the user can select from. @Since: ATK-2.1.0
149 *@ATK_ROLE_GROUPING: A group of related widgets. This group typically has a label. @Since: ATK-2.1.0
150 *@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-2.1.0
151 *@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-2.1.0
152 *@ATK_ROLE_INFO_BAR: An object designed to present a message to the user within an existing window. @Since: ATK-2.1.0
153 *@ATK_ROLE_LEVEL_BAR: A bar that serves as a level indicator to, for instance, show the strength of a password or the state of a battery. @Since: ATK-2.7.3
154 *@ATK_ROLE_TITLE_BAR: A bar that serves as the title of a window or a
155 * dialog. @Since: ATK-2.12
156 *@ATK_ROLE_BLOCK_QUOTE: An object which contains a text section
157 * that is quoted from another source. @Since: ATK-2.12
158 *@ATK_ROLE_AUDIO: An object which represents an audio element. @Since: ATK-2.12
159 *@ATK_ROLE_VIDEO: An object which represents a video element. @Since: ATK-2.12
160 *@ATK_ROLE_DEFINITION: A definition of a term or concept. @Since: ATK-2.12
161 *@ATK_ROLE_ARTICLE: A section of a page that consists of a
162 * composition that forms an independent part of a document, page, or
163 * site. Examples: A blog entry, a news story, a forum post. @Since:
165 *@ATK_ROLE_LANDMARK: A region of a web page intended as a
166 * navigational landmark. This is designed to allow Assistive
167 * Technologies to provide quick navigation among key regions within a
168 * document. @Since: ATK-2.12
169 *@ATK_ROLE_LOG: A text widget or container holding log content, such
170 * as chat history and error logs. In this role there is a
171 * relationship between the arrival of new items in the log and the
172 * reading order. The log contains a meaningful sequence and new
173 * information is added only to the end of the log, not at arbitrary
174 * points. @Since: ATK-2.12
175 *@ATK_ROLE_MARQUEE: A container where non-essential information
176 * changes frequently. Common usages of marquee include stock tickers
177 * and ad banners. The primary difference between a marquee and a log
178 * is that logs usually have a meaningful order or sequence of
179 * important content changes. @Since: ATK-2.12
180 *@ATK_ROLE_MATH: A text widget or container that holds a mathematical
181 * expression. @Since: ATK-2.12
182 *@ATK_ROLE_RATING: A widget whose purpose is to display a rating,
183 * such as the number of stars associated with a song in a media
184 * player. Objects of this role should also implement
185 * AtkValue. @Since: ATK-2.12
186 *@ATK_ROLE_TIMER: An object containing a numerical counter which
187 * indicates an amount of elapsed time from a start point, or the time
188 * remaining until an end point. @Since: ATK-2.12
189 *@ATK_ROLE_DESCRIPTION_LIST: An object that represents a list of
190 * term-value groups. A term-value group represents a individual
191 * description and consist of one or more names
192 * (ATK_ROLE_DESCRIPTION_TERM) followed by one or more values
193 * (ATK_ROLE_DESCRIPTION_VALUE). For each list, there should not be
194 * more than one group with the same term name. @Since: ATK-2.12
195 *@ATK_ROLE_DESCRIPTION_TERM: An object that represents the term, or
196 * name, part of a term-description group in a description
197 * list. @Since: ATK-2.12
198 *@ATK_ROLE_DESCRIPTION_VALUE: An object that represents the
199 * description, definition or value of a term-description group in a
200 * description list. The values within a group are alternatives,
201 * meaning that you can have several ATK_ROLE_DESCRIPTION_VALUE for a
202 * given ATK_ROLE_DESCRIPTION_TERM. @Since: ATK-2.12
203 *@ATK_ROLE_LAST_DEFINED: not a valid role, used for finding end of the enumeration
205 * Describes the role of an object
207 * These are the built-in enumerated roles that UI components can have in
208 * ATK. Other roles may be added at runtime, so an AtkRole >=
209 * ATK_ROLE_LAST_DEFINED is not necessarily an error.
213 ATK_ROLE_INVALID = 0,
214 ATK_ROLE_ACCEL_LABEL, /*<nick=accelerator-label>*/
221 ATK_ROLE_CHECK_MENU_ITEM,
222 ATK_ROLE_COLOR_CHOOSER,
223 ATK_ROLE_COLUMN_HEADER,
225 ATK_ROLE_DATE_EDITOR,
226 ATK_ROLE_DESKTOP_ICON,
227 ATK_ROLE_DESKTOP_FRAME,
230 ATK_ROLE_DIRECTORY_PANE,
231 ATK_ROLE_DRAWING_AREA,
232 ATK_ROLE_FILE_CHOOSER,
234 ATK_ROLE_FONT_CHOOSER,
237 ATK_ROLE_HTML_CONTAINER,
240 ATK_ROLE_INTERNAL_FRAME,
242 ATK_ROLE_LAYERED_PANE,
248 ATK_ROLE_OPTION_PANE,
250 ATK_ROLE_PAGE_TAB_LIST,
252 ATK_ROLE_PASSWORD_TEXT,
254 ATK_ROLE_PROGRESS_BAR,
255 ATK_ROLE_PUSH_BUTTON,
256 ATK_ROLE_RADIO_BUTTON,
257 ATK_ROLE_RADIO_MENU_ITEM,
261 ATK_ROLE_SCROLL_PANE,
265 ATK_ROLE_SPIN_BUTTON,
269 ATK_ROLE_TABLE_COLUMN_HEADER,
270 ATK_ROLE_TABLE_ROW_HEADER,
271 ATK_ROLE_TEAR_OFF_MENU_ITEM,
274 ATK_ROLE_TOGGLE_BUTTON,
286 ATK_ROLE_APPLICATION,
287 ATK_ROLE_AUTOCOMPLETE,
293 ATK_ROLE_DOCUMENT_FRAME,
297 ATK_ROLE_REDUNDANT_OBJECT,
300 ATK_ROLE_INPUT_METHOD_WINDOW,
303 ATK_ROLE_DOCUMENT_SPREADSHEET,
304 ATK_ROLE_DOCUMENT_PRESENTATION,
305 ATK_ROLE_DOCUMENT_TEXT,
306 ATK_ROLE_DOCUMENT_WEB,
307 ATK_ROLE_DOCUMENT_EMAIL,
312 ATK_ROLE_NOTIFICATION,
316 ATK_ROLE_BLOCK_QUOTE,
327 ATK_ROLE_DESCRIPTION_LIST,
328 ATK_ROLE_DESCRIPTION_TERM,
329 ATK_ROLE_DESCRIPTION_VALUE,
330 ATK_ROLE_LAST_DEFINED
335 *@ATK_LAYER_INVALID: The object does not have a layer
336 *@ATK_LAYER_BACKGROUND: This layer is reserved for the desktop background
337 *@ATK_LAYER_CANVAS: This layer is used for Canvas components
338 *@ATK_LAYER_WIDGET: This layer is normally used for components
339 *@ATK_LAYER_MDI: This layer is used for layered components
340 *@ATK_LAYER_POPUP: This layer is used for popup components, such as menus
341 *@ATK_LAYER_OVERLAY: This layer is reserved for future use.
342 *@ATK_LAYER_WINDOW: This layer is used for toplevel windows.
344 * Describes the layer of a component
346 * These enumerated "layer values" are used when determining which UI
347 * rendering layer a component is drawn into, which can help in making
348 * determinations of when components occlude one another.
353 ATK_LAYER_BACKGROUND,
365 * This is a singly-linked list (a #GSList) of #AtkAttribute. It is
366 * used by atk_text_get_run_attributes(),
367 * atk_text_get_default_attributes(),
368 * atk_editable_text_set_run_attributes(),
369 * atk_document_get_attributes() and atk_object_get_attributes()
371 typedef GSList AtkAttributeSet;
375 * @name: The attribute name.
376 * @value: the value of the attribute, represented as a string.
378 * AtkAttribute is a string name/value pair representing a generic
379 * attribute. This can be used to expose additional information from
380 * an accessible object as a whole (see atk_object_get_attributes())
381 * or an document (see atk_document_get_attributes()). In the case of
382 * text attributes (see atk_text_get_default_attributes()),
383 * #AtkTextAttribute enum defines all the possible text attribute
384 * names. You can use atk_text_attribute_get_name() to get the string
385 * name from the enum value. See also atk_text_attribute_for_name()
386 * and atk_text_attribute_get_value() for more information.
388 * A string name/value pair representing a generic attribute.
390 typedef struct _AtkAttribute AtkAttribute;
392 struct _AtkAttribute {
397 #define ATK_TYPE_OBJECT (atk_object_get_type ())
398 #define ATK_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_OBJECT, AtkObject))
399 #define ATK_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), ATK_TYPE_OBJECT, AtkObjectClass))
400 #define ATK_IS_OBJECT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_OBJECT))
401 #define ATK_IS_OBJECT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), ATK_TYPE_OBJECT))
402 #define ATK_OBJECT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), ATK_TYPE_OBJECT, AtkObjectClass))
404 #define ATK_TYPE_IMPLEMENTOR (atk_implementor_get_type ())
405 #define ATK_IS_IMPLEMENTOR(obj) G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_IMPLEMENTOR)
406 #define ATK_IMPLEMENTOR(obj) G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_IMPLEMENTOR, AtkImplementor)
407 #define ATK_IMPLEMENTOR_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), ATK_TYPE_IMPLEMENTOR, AtkImplementorIface))
410 typedef struct _AtkImplementor AtkImplementor; /* dummy typedef */
411 typedef struct _AtkImplementorIface AtkImplementorIface;
414 typedef struct _AtkObject AtkObject;
415 typedef struct _AtkObjectClass AtkObjectClass;
416 typedef struct _AtkRelationSet AtkRelationSet;
417 typedef struct _AtkStateSet AtkStateSet;
421 * @property_name: The name of the ATK property which has changed.
422 * @old_value: NULL. This field is not used anymore.
423 * @new_value: The new value of the named property.
425 * Note: @old_value field of #AtkPropertyValues will not contain a
426 * valid value. This is a field defined with the purpose of contain
427 * the previous value of the property, but is not used anymore.
430 struct _AtkPropertyValues
432 const gchar *property_name;
437 typedef struct _AtkPropertyValues AtkPropertyValues;
441 * @user_data: custom data defined by the user
443 * An AtkFunction is a function definition used for padding which has
444 * been added to class and interface structures to allow for expansion
449 typedef gboolean (*AtkFunction) (gpointer user_data);
451 * For most properties the old_value field of AtkPropertyValues will
452 * not contain a valid value.
454 * Currently, the only property for which old_value is used is
455 * accessible-state; for instance if there is a focus state the
456 * property change handler will be called for the object which lost the focus
457 * with the old_value containing an AtkState value corresponding to focused
458 * and the property change handler will be called for the object which
459 * received the focus with the new_value containing an AtkState value
460 * corresponding to focused.
464 * AtkPropertyChangeHandler:
465 * @obj: atkobject which property changes
466 * @vals: values changed
468 * An AtkPropertyChangeHandler is a function which is executed when an
469 * AtkObject's property changes value. It is specified in a call to
470 * atk_object_connect_property_change_handler().
472 * Deprecated: Since 2.12.
474 typedef void (*AtkPropertyChangeHandler) (AtkObject* obj, AtkPropertyValues* vals);
483 AtkObject *accessible_parent;
485 AtkRelationSet *relation_set;
492 * @connect_property_change_handler: specifies a function to be called
493 * when a property changes value. This virtual function is
494 * deprecated since 2.12 and it should not be overriden. Connect
495 * directly to property-change or notify signal instead.
496 * @remove_property_change_handler: removes a property changed handler
497 * as returned by @connect_property_change_handler. This virtual
498 * function is deprecated sice 2.12 and it should not be overriden.
499 * @focus_event: The signal handler which is executed when there is a
500 * focus event for an object. This virtual function is deprecated
501 * since 2.9.4 and it should not be overriden. Use
502 * state-changed:focused signal instead.
504 struct _AtkObjectClass
509 * Gets the accessible name of the object
511 const gchar* (* get_name) (AtkObject *accessible);
513 * Gets the accessible description of the object
515 const gchar* (* get_description) (AtkObject *accessible);
517 * Gets the accessible parent of the object
519 AtkObject* (*get_parent) (AtkObject *accessible);
522 * Gets the number of accessible children of the object
524 gint (* get_n_children) (AtkObject *accessible);
526 * Returns a reference to the specified accessible child of the object.
527 * The accessible children are 0-based so the first accessible child is
528 * at index 0, the second at index 1 and so on.
530 AtkObject* (* ref_child) (AtkObject *accessible,
533 * Gets the 0-based index of this object in its parent; returns -1 if the
534 * object does not have an accessible parent.
536 gint (* get_index_in_parent) (AtkObject *accessible);
538 * Gets the RelationSet associated with the object
540 AtkRelationSet* (* ref_relation_set) (AtkObject *accessible);
542 * Gets the role of the object
544 AtkRole (* get_role) (AtkObject *accessible);
545 AtkLayer (* get_layer) (AtkObject *accessible);
546 gint (* get_mdi_zorder) (AtkObject *accessible);
548 * Gets the state set of the object
550 AtkStateSet* (* ref_state_set) (AtkObject *accessible);
552 * Sets the accessible name of the object
554 void (* set_name) (AtkObject *accessible,
557 * Sets the accessible description of the object
559 void (* set_description) (AtkObject *accessible,
560 const gchar *description);
562 * Sets the accessible parent of the object
564 void (* set_parent) (AtkObject *accessible,
567 * Sets the accessible role of the object
569 void (* set_role) (AtkObject *accessible,
572 * Specifies a function to be called when a property changes value
574 guint (* connect_property_change_handler) (AtkObject
576 AtkPropertyChangeHandler *handler);
578 * Removes a property change handler which was specified using
579 * connect_property_change_handler
581 void (* remove_property_change_handler) (AtkObject
585 void (* initialize) (AtkObject *accessible,
588 * The signal handler which is executed when there is a change in the
589 * children of the object
591 void (* children_changed) (AtkObject *accessible,
593 gpointer changed_child);
595 * The signal handler which is executed when there is a focus event
598 void (* focus_event) (AtkObject *accessible,
601 * The signal handler which is executed when there is a property_change
602 * signal for an object.
604 void (* property_change) (AtkObject *accessible,
605 AtkPropertyValues *values);
607 * The signal handler which is executed when there is a state_change
608 * signal for an object.
610 void (* state_change) (AtkObject *accessible,
614 * The signal handler which is executed when there is a change in the
615 * visible data for an object
617 void (*visible_data_changed) (AtkObject *accessible);
620 * The signal handler which is executed when there is a change in the
621 * 'active' child or children of the object, for instance when
622 * interior focus changes in a table or list. This signal should be emitted
623 * by objects whose state includes ATK_STATE_MANAGES_DESCENDANTS.
625 void (*active_descendant_changed) (AtkObject *accessible,
629 * Gets a list of properties applied to this object as a whole, as an #AtkAttributeSet consisting of name-value pairs.
632 AtkAttributeSet* (*get_attributes) (AtkObject *accessible);
634 const gchar* (*get_object_locale) (AtkObject *accessible);
639 GType atk_object_get_type (void);
642 * AtkImplementorIface:
644 * The AtkImplementor interface is implemented by objects for which
645 * AtkObject peers may be obtained via calls to
646 * iface->(ref_accessible)(implementor);
648 struct _AtkImplementorIface
650 GTypeInterface parent;
652 AtkObject* (*ref_accessible) (AtkImplementor *implementor);
654 GType atk_implementor_get_type (void);
656 AtkObject* atk_implementor_ref_accessible (AtkImplementor *implementor);
659 * Properties directly supported by AtkObject
662 const gchar* atk_object_get_name (AtkObject *accessible);
663 const gchar* atk_object_get_description (AtkObject *accessible);
664 AtkObject* atk_object_get_parent (AtkObject *accessible);
665 AtkObject* atk_object_peek_parent (AtkObject *accessible);
666 gint atk_object_get_n_accessible_children (AtkObject *accessible);
667 AtkObject* atk_object_ref_accessible_child (AtkObject *accessible,
669 AtkRelationSet* atk_object_ref_relation_set (AtkObject *accessible);
670 AtkRole atk_object_get_role (AtkObject *accessible);
672 G_DEPRECATED_FOR(atk_component_get_layer)
673 AtkLayer atk_object_get_layer (AtkObject *accessible);
674 G_DEPRECATED_FOR(atk_component_get_mdi_zorder)
675 gint atk_object_get_mdi_zorder (AtkObject *accessible);
677 AtkAttributeSet* atk_object_get_attributes (AtkObject *accessible);
678 AtkStateSet* atk_object_ref_state_set (AtkObject *accessible);
679 gint atk_object_get_index_in_parent (AtkObject *accessible);
680 void atk_object_set_name (AtkObject *accessible,
682 void atk_object_set_description (AtkObject *accessible,
683 const gchar *description);
684 void atk_object_set_parent (AtkObject *accessible,
686 void atk_object_set_role (AtkObject *accessible,
691 guint atk_object_connect_property_change_handler (AtkObject *accessible,
692 AtkPropertyChangeHandler *handler);
694 void atk_object_remove_property_change_handler (AtkObject *accessible,
697 void atk_object_notify_state_change (AtkObject *accessible,
700 void atk_object_initialize (AtkObject *accessible,
703 const gchar* atk_role_get_name (AtkRole role);
704 AtkRole atk_role_for_name (const gchar *name);
707 /* NEW in 1.1: convenience API */
708 gboolean atk_object_add_relationship (AtkObject *object,
709 AtkRelationType relationship,
711 gboolean atk_object_remove_relationship (AtkObject *object,
712 AtkRelationType relationship,
714 const gchar* atk_role_get_localized_name (AtkRole role);
716 AtkRole atk_role_register (const gchar *name);
717 const gchar* atk_object_get_object_locale (AtkObject *accessible);
721 #endif /* __ATK_OBJECT_H__ */