atk/atkobject.h

   1 /* ATK -  Accessibility Toolkit
   2  * Copyright 2001 Sun Microsystems Inc.
   3  *
   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.
   8  *
   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.
  13  *
  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.
  18  */
  19
  20 #if defined(ATK_DISABLE_SINGLE_INCLUDES) && !defined (__ATK_H_INSIDE__) && !defined (ATK_COMPILATION)
  21 #error "Only <atk/atk.h> can be included directly."
  22 #endif
  23
  24 #ifndef __ATK_OBJECT_H__
  25 #define __ATK_OBJECT_H__
  26
  27 #include <glib-object.h>
  28
  29 #include <atk/atkversion.h>
  30 #include <atk/atkstate.h>
  31 #include <atk/atkrelationtype.h>
  32
  33 G_BEGIN_DECLS
  34
  35 /*
  36  * AtkObject represents the minimum information all accessible objects
  37  * return. This information includes accessible name, accessible
  38  * description, role and state of the object, as well information about
  39  * its parent and children. It is also possible to obtain more specific
  40  * accessibility information about a component if it supports one or more
  41  * of the following interfaces:
  42  */
  43
  44
  45 /**
  46  *AtkRole:
  47  *@ATK_ROLE_INVALID: Invalid role
  48  *@ATK_ROLE_ACCEL_LABEL: A label which represents an accelerator
  49  *@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.
  50  *@ATK_ROLE_ANIMATION: An object which is an animated image
  51  *@ATK_ROLE_ARROW: An arrow in one of the four cardinal directions
  52  *@ATK_ROLE_CALENDAR:  An object that displays a calendar and allows the user to select a date
  53  *@ATK_ROLE_CANVAS: An object that can be drawn into and is used to trap events
  54  *@ATK_ROLE_CHECK_BOX: A choice that can be checked or unchecked and provides a separate indicator for the current state
  55  *@ATK_ROLE_CHECK_MENU_ITEM: A menu item with a check box
  56  *@ATK_ROLE_COLOR_CHOOSER: A specialized dialog that lets the user choose a color
  57  *@ATK_ROLE_COLUMN_HEADER: The header for a column of data
  58  *@ATK_ROLE_COMBO_BOX: A collapsible list of choices the user can select from
  59  *@ATK_ROLE_DATE_EDITOR: An object whose purpose is to allow a user to edit a date
  60  *@ATK_ROLE_DESKTOP_ICON: An inconifed internal frame within a DESKTOP_PANE
  61  *@ATK_ROLE_DESKTOP_FRAME: A pane that supports internal frames and iconified versions of those internal frames
  62  *@ATK_ROLE_DIAL: An object whose purpose is to allow a user to set a value
  63  *@ATK_ROLE_DIALOG: A top level window with title bar and a border
  64  *@ATK_ROLE_DIRECTORY_PANE: A pane that allows the user to navigate through and select the contents of a directory
  65  *@ATK_ROLE_DRAWING_AREA: An object used for drawing custom user interface elements
  66  *@ATK_ROLE_FILE_CHOOSER: A specialized dialog that lets the user choose a file
  67  *@ATK_ROLE_FILLER: A object that fills up space in a user interface
  68  *@ATK_ROLE_FONT_CHOOSER: A specialized dialog that lets the user choose a font
  69  *@ATK_ROLE_FRAME: A top level window with a title bar, border, menubar, etc.
  70  *@ATK_ROLE_GLASS_PANE: A pane that is guaranteed to be painted on top of all panes beneath it
  71  *@ATK_ROLE_HTML_CONTAINER: A document container for HTML, whose children represent the document content
  72  *@ATK_ROLE_ICON: A small fixed size picture, typically used to decorate components
  73  *@ATK_ROLE_IMAGE: An object whose primary purpose is to display an image
  74  *@ATK_ROLE_INTERNAL_FRAME: A frame-like object that is clipped by a desktop pane
  75  *@ATK_ROLE_LABEL: An object used to present an icon or short string in an interface
  76  *@ATK_ROLE_LAYERED_PANE: A specialized pane that allows its children to be drawn in layers, providing a form of stacking order
  77  *@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
  78  *@ATK_ROLE_LIST_ITEM: An object that represents an element of a list
  79  *@ATK_ROLE_MENU: An object usually found inside a menu bar that contains a list of actions the user can choose from
  80  *@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
  81  *@ATK_ROLE_MENU_ITEM: An object usually contained in a menu that presents an action the user can choose
  82  *@ATK_ROLE_OPTION_PANE: A specialized pane whose primary use is inside a DIALOG
  83  *@ATK_ROLE_PAGE_TAB: An object that is a child of a page tab list
  84  *@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
  85  *@ATK_ROLE_PANEL: A generic container that is often used to group objects
  86  *@ATK_ROLE_PASSWORD_TEXT: A text object uses for passwords, or other places where the text content is not shown visibly to the user
  87  *@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
  88  *@ATK_ROLE_PROGRESS_BAR: An object used to indicate how much of a task has been completed
  89  *@ATK_ROLE_PUSH_BUTTON: An object the user can manipulate to tell the application to do something
  90  *@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
  91  *@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
  92  *@ATK_ROLE_ROOT_PANE: A specialized pane that has a glass pane and a layered pane as its children
  93  *@ATK_ROLE_ROW_HEADER: The header for a row of data
  94  *@ATK_ROLE_SCROLL_BAR: An object usually used to allow a user to incrementally view a large amount of data.
  95  *@ATK_ROLE_SCROLL_PANE: An object that allows a user to incrementally view a large amount of information
  96  *@ATK_ROLE_SEPARATOR: An object usually contained in a menu to provide a visible and logical separation of the contents in a menu
  97  *@ATK_ROLE_SLIDER: An object that allows the user to select from a bounded range
  98  *@ATK_ROLE_SPLIT_PANE: A specialized panel that presents two other panels at the same time
  99  *@ATK_ROLE_SPIN_BUTTON: An object used to get an integer or floating point number from the user
 100  *@ATK_ROLE_STATUSBAR: An object which reports messages of minor importance to the user
 101  *@ATK_ROLE_TABLE: An object used to represent information in terms of rows and columns
 102  *@ATK_ROLE_TABLE_CELL: A cell in a table
 103  *@ATK_ROLE_TABLE_COLUMN_HEADER: The header for a column of a table
 104  *@ATK_ROLE_TABLE_ROW_HEADER: The header for a row of a table
 105  *@ATK_ROLE_TEAR_OFF_MENU_ITEM: A menu item used to tear off and reattach its menu
 106  *@ATK_ROLE_TERMINAL: An object that represents an accessible terminal.  @Since: ATK-0.6
 107  *@ATK_ROLE_TEXT: An interactive widget that supports multiple lines of text and
 108  * optionally accepts user input, but whose purpose is not to solicit user input.
 109  * Thus ATK_ROLE_TEXT is appropriate for the text view in a plain text editor
 110  * but inappropriate for an input field in a dialog box or web form. For widgets
 111  * whose purpose is to solicit input from the user, see ATK_ROLE_ENTRY and
 112  * ATK_ROLE_PASSWORD_TEXT. For generic objects which display a brief amount of
 113  * textual information, see ATK_ROLE_STATIC.
 114  *@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
 115  *@ATK_ROLE_TOOL_BAR: A bar or palette usually composed of push buttons or toggle buttons
 116  *@ATK_ROLE_TOOL_TIP: An object that provides information about another object
 117  *@ATK_ROLE_TREE: An object used to represent hierarchical information to the user
 118  *@ATK_ROLE_TREE_TABLE: An object capable of expanding and collapsing rows as well as showing multiple columns of data.   @Since: ATK-0.7
 119  *@ATK_ROLE_UNKNOWN: The object contains some Accessible information, but its role is not known
 120  *@ATK_ROLE_VIEWPORT: An object usually used in a scroll pane
 121  *@ATK_ROLE_WINDOW: A top level window with no title or border.
 122  *@ATK_ROLE_HEADER: An object that serves as a document header. @Since: ATK-1.1.1
 123  *@ATK_ROLE_FOOTER: An object that serves as a document footer.  @Since: ATK-1.1.1
 124  *@ATK_ROLE_PARAGRAPH: An object which is contains a paragraph of text content.   @Since: ATK-1.1.1
 125  *@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
 126  *@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
 127  *@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
 128  *@ATK_ROLE_EDITBAR: The object is an editable text object in a toolbar.  @Since: ATK-1.5
 129  *@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
 130  *@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
 131  *@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
 132  *@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
 133  *@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
 134  *@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.
 135  *@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
 136  *@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
 137  *@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
 138  *@ATK_ROLE_FORM: The object is a container for form controls, for instance as part of a
 139  * web form or user-input form within a document.  This role is primarily a tag/convenience for
 140  * clients when navigating complex documents, it is not expected that ordinary GUI containers will
 141  * always have ATK_ROLE_FORM. @Since: ATK-1.12.0
 142  *@ATK_ROLE_LINK: The object is a hypertext anchor, i.e. a "link" in a
 143  * hypertext document.  Such objects are distinct from 'inline'
 144  * content which may also use the Hypertext/Hyperlink interfaces
 145  * to indicate the range/location within a text object where
 146  * an inline or embedded object lies.  @Since: ATK-1.12.1
 147  *@ATK_ROLE_INPUT_METHOD_WINDOW: The object is a window or similar viewport
 148  * which is used to allow composition or input of a 'complex character',
 149  * in other words it is an "input method window." @Since: ATK-1.12.1
 150  *@ATK_ROLE_TABLE_ROW: A row in a table.  @Since: ATK-2.1.0
 151  *@ATK_ROLE_TREE_ITEM: An object that represents an element of a tree.  @Since: ATK-2.1.0
 152  *@ATK_ROLE_DOCUMENT_SPREADSHEET: A document frame which contains a spreadsheet.  @Since: ATK-2.1.0
 153  *@ATK_ROLE_DOCUMENT_PRESENTATION: A document frame which contains a presentation or slide content.  @Since: ATK-2.1.0
 154  *@ATK_ROLE_DOCUMENT_TEXT: A document frame which contains textual content, such as found in a word processing application.  @Since: ATK-2.1.0
 155  *@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
 156  *@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
 157  *@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
 158  *@ATK_ROLE_LIST_BOX: A non-collapsible list of choices the user can select from. @Since: ATK-2.1.0
 159  *@ATK_ROLE_GROUPING: A group of related widgets. This group typically has a label. @Since: ATK-2.1.0
 160  *@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
 161  *@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
 162  *@ATK_ROLE_INFO_BAR: An object designed to present a message to the user within an existing window. @Since: ATK-2.1.0
 163  *@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
 164  *@ATK_ROLE_TITLE_BAR: A bar that serves as the title of a window or a
 165  * dialog. @Since: ATK-2.12
 166  *@ATK_ROLE_BLOCK_QUOTE: An object which contains a text section
 167  * that is quoted from another source. @Since: ATK-2.12
 168  *@ATK_ROLE_AUDIO: An object which represents an audio element. @Since: ATK-2.12
 169  *@ATK_ROLE_VIDEO: An object which represents a video element. @Since: ATK-2.12
 170  *@ATK_ROLE_DEFINITION: A definition of a term or concept. @Since: ATK-2.12
 171  *@ATK_ROLE_ARTICLE: A section of a page that consists of a
 172  * composition that forms an independent part of a document, page, or
 173  * site. Examples: A blog entry, a news story, a forum post. @Since:
 174  * ATK-2.12
 175  *@ATK_ROLE_LANDMARK: A region of a web page intended as a
 176  * navigational landmark. This is designed to allow Assistive
 177  * Technologies to provide quick navigation among key regions within a
 178  * document. @Since: ATK-2.12
 179  *@ATK_ROLE_LOG: A text widget or container holding log content, such
 180  * as chat history and error logs. In this role there is a
 181  * relationship between the arrival of new items in the log and the
 182  * reading order. The log contains a meaningful sequence and new
 183  * information is added only to the end of the log, not at arbitrary
 184  * points. @Since: ATK-2.12
 185  *@ATK_ROLE_MARQUEE: A container where non-essential information
 186  * changes frequently. Common usages of marquee include stock tickers
 187  * and ad banners. The primary difference between a marquee and a log
 188  * is that logs usually have a meaningful order or sequence of
 189  * important content changes. @Since: ATK-2.12
 190  *@ATK_ROLE_MATH: A text widget or container that holds a mathematical
 191  * expression. @Since: ATK-2.12
 192  *@ATK_ROLE_RATING: A widget whose purpose is to display a rating,
 193  * such as the number of stars associated with a song in a media
 194  * player. Objects of this role should also implement
 195  * AtkValue. @Since: ATK-2.12
 196  *@ATK_ROLE_TIMER: An object containing a numerical counter which
 197  * indicates an amount of elapsed time from a start point, or the time
 198  * remaining until an end point. @Since: ATK-2.12
 199  *@ATK_ROLE_DESCRIPTION_LIST: An object that represents a list of
 200  * term-value groups. A term-value group represents a individual
 201  * description and consist of one or more names
 202  * (ATK_ROLE_DESCRIPTION_TERM) followed by one or more values
 203  * (ATK_ROLE_DESCRIPTION_VALUE). For each list, there should not be
 204  * more than one group with the same term name. @Since: ATK-2.12
 205  *@ATK_ROLE_DESCRIPTION_TERM: An object that represents the term, or
 206  * name, part of a term-description group in a description
 207  * list. @Since: ATK-2.12
 208  *@ATK_ROLE_DESCRIPTION_VALUE: An object that represents the
 209  * description, definition or value of a term-description group in a
 210  * description list. The values within a group are alternatives,
 211  * meaning that you can have several ATK_ROLE_DESCRIPTION_VALUE for a
 212  * given ATK_ROLE_DESCRIPTION_TERM. @Since: ATK-2.12
 213  *@ATK_ROLE_STATIC: A generic non-container object whose purpose is to display a
 214  * brief amount of information to the user and whose role is known by the
 215  * implementor but lacks semantic value for the user. Examples in which
 216  * ATK_ROLE_STATIC is appropriate include the message displayed in a message box
 217  * and an image used as an alternative means to display text. ATK_ROLE_STATIC
 218  * should not be applied to widgets which are traditionally interactive, objects
 219  * which display a significant amount of content, or any object which has an
 220  * accessible relation pointing to another object. Implementors should expose the
 221  * displayed information through the accessible name of the object. If doing so seems
 222  * inappropriate, it may indicate that a different role should be used. For
 223  * labels which describe another widget, see ATK_ROLE_LABEL. For text views, see
 224  * ATK_ROLE_TEXT. For generic containers, see ATK_ROLE_PANEL. For objects whose
 225  * role is not known by the implementor, see ATK_ROLE_UNKNOWN. @Since: ATK-2.16.
 226  *@ATK_ROLE_LAST_DEFINED: not a valid role, used for finding end of the enumeration
 227  *
 228  * Describes the role of an object
 229  *
 230  * These are the built-in enumerated roles that UI components can have in
 231  * ATK.  Other roles may be added at runtime, so an AtkRole >=
 232  * ATK_ROLE_LAST_DEFINED is not necessarily an error.
 233  **/
 234 typedef enum
 235 {
 236   ATK_ROLE_INVALID = 0,
 237   ATK_ROLE_ACCEL_LABEL,      /*<nick=accelerator-label>*/
 238   ATK_ROLE_ALERT,
 239   ATK_ROLE_ANIMATION,
 240   ATK_ROLE_ARROW,
 241   ATK_ROLE_CALENDAR,
 242   ATK_ROLE_CANVAS,
 243   ATK_ROLE_CHECK_BOX,
 244   ATK_ROLE_CHECK_MENU_ITEM,
 245   ATK_ROLE_COLOR_CHOOSER,
 246   ATK_ROLE_COLUMN_HEADER,
 247   ATK_ROLE_COMBO_BOX,
 248   ATK_ROLE_DATE_EDITOR,
 249   ATK_ROLE_DESKTOP_ICON,
 250   ATK_ROLE_DESKTOP_FRAME,
 251   ATK_ROLE_DIAL,
 252   ATK_ROLE_DIALOG,
 253   ATK_ROLE_DIRECTORY_PANE,
 254   ATK_ROLE_DRAWING_AREA,
 255   ATK_ROLE_FILE_CHOOSER,
 256   ATK_ROLE_FILLER,
 257   ATK_ROLE_FONT_CHOOSER,
 258   ATK_ROLE_FRAME,
 259   ATK_ROLE_GLASS_PANE,
 260   ATK_ROLE_HTML_CONTAINER,
 261   ATK_ROLE_ICON,
 262   ATK_ROLE_IMAGE,
 263   ATK_ROLE_INTERNAL_FRAME,
 264   ATK_ROLE_LABEL,
 265   ATK_ROLE_LAYERED_PANE,
 266   ATK_ROLE_LIST,
 267   ATK_ROLE_LIST_ITEM,
 268   ATK_ROLE_MENU,
 269   ATK_ROLE_MENU_BAR,
 270   ATK_ROLE_MENU_ITEM,
 271   ATK_ROLE_OPTION_PANE,
 272   ATK_ROLE_PAGE_TAB,
 273   ATK_ROLE_PAGE_TAB_LIST,
 274   ATK_ROLE_PANEL,
 275   ATK_ROLE_PASSWORD_TEXT,
 276   ATK_ROLE_POPUP_MENU,
 277   ATK_ROLE_PROGRESS_BAR,
 278   ATK_ROLE_PUSH_BUTTON,
 279   ATK_ROLE_RADIO_BUTTON,
 280   ATK_ROLE_RADIO_MENU_ITEM,
 281   ATK_ROLE_ROOT_PANE,
 282   ATK_ROLE_ROW_HEADER,
 283   ATK_ROLE_SCROLL_BAR,
 284   ATK_ROLE_SCROLL_PANE,
 285   ATK_ROLE_SEPARATOR,
 286   ATK_ROLE_SLIDER,
 287   ATK_ROLE_SPLIT_PANE,
 288   ATK_ROLE_SPIN_BUTTON,
 289   ATK_ROLE_STATUSBAR,
 290   ATK_ROLE_TABLE,
 291   ATK_ROLE_TABLE_CELL,
 292   ATK_ROLE_TABLE_COLUMN_HEADER,
 293   ATK_ROLE_TABLE_ROW_HEADER,
 294   ATK_ROLE_TEAR_OFF_MENU_ITEM,
 295   ATK_ROLE_TERMINAL,
 296   ATK_ROLE_TEXT,
 297   ATK_ROLE_TOGGLE_BUTTON,
 298   ATK_ROLE_TOOL_BAR,
 299   ATK_ROLE_TOOL_TIP,
 300   ATK_ROLE_TREE,
 301   ATK_ROLE_TREE_TABLE,
 302   ATK_ROLE_UNKNOWN,
 303   ATK_ROLE_VIEWPORT,
 304   ATK_ROLE_WINDOW,
 305   ATK_ROLE_HEADER,
 306   ATK_ROLE_FOOTER,
 307   ATK_ROLE_PARAGRAPH,
 308   ATK_ROLE_RULER,
 309   ATK_ROLE_APPLICATION,
 310   ATK_ROLE_AUTOCOMPLETE,
 311   ATK_ROLE_EDITBAR,          /*<nick=edit-bar>*/
 312   ATK_ROLE_EMBEDDED,
 313   ATK_ROLE_ENTRY,
 314   ATK_ROLE_CHART,
 315   ATK_ROLE_CAPTION,
 316   ATK_ROLE_DOCUMENT_FRAME,
 317   ATK_ROLE_HEADING,
 318   ATK_ROLE_PAGE,
 319   ATK_ROLE_SECTION,
 320   ATK_ROLE_REDUNDANT_OBJECT,
 321   ATK_ROLE_FORM,
 322   ATK_ROLE_LINK,
 323   ATK_ROLE_INPUT_METHOD_WINDOW,
 324   ATK_ROLE_TABLE_ROW,
 325   ATK_ROLE_TREE_ITEM,
 326   ATK_ROLE_DOCUMENT_SPREADSHEET,
 327   ATK_ROLE_DOCUMENT_PRESENTATION,
 328   ATK_ROLE_DOCUMENT_TEXT,
 329   ATK_ROLE_DOCUMENT_WEB,
 330   ATK_ROLE_DOCUMENT_EMAIL,
 331   ATK_ROLE_COMMENT,
 332   ATK_ROLE_LIST_BOX,
 333   ATK_ROLE_GROUPING,
 334   ATK_ROLE_IMAGE_MAP,
 335   ATK_ROLE_NOTIFICATION,
 336   ATK_ROLE_INFO_BAR,
 337   ATK_ROLE_LEVEL_BAR,
 338   ATK_ROLE_TITLE_BAR,
 339   ATK_ROLE_BLOCK_QUOTE,
 340   ATK_ROLE_AUDIO,
 341   ATK_ROLE_VIDEO,
 342   ATK_ROLE_DEFINITION,
 343   ATK_ROLE_ARTICLE,
 344   ATK_ROLE_LANDMARK,
 345   ATK_ROLE_LOG,
 346   ATK_ROLE_MARQUEE,
 347   ATK_ROLE_MATH,
 348   ATK_ROLE_RATING,
 349   ATK_ROLE_TIMER,
 350   ATK_ROLE_DESCRIPTION_LIST,
 351   ATK_ROLE_DESCRIPTION_TERM,
 352   ATK_ROLE_DESCRIPTION_VALUE,
 353   ATK_ROLE_STATIC,
 354   ATK_ROLE_LAST_DEFINED
 355 } AtkRole;
 356
 357 /**
 358  *AtkLayer:
 359  *@ATK_LAYER_INVALID: The object does not have a layer
 360  *@ATK_LAYER_BACKGROUND: This layer is reserved for the desktop background
 361  *@ATK_LAYER_CANVAS: This layer is used for Canvas components
 362  *@ATK_LAYER_WIDGET: This layer is normally used for components
 363  *@ATK_LAYER_MDI: This layer is used for layered components
 364  *@ATK_LAYER_POPUP: This layer is used for popup components, such as menus
 365  *@ATK_LAYER_OVERLAY: This layer is reserved for future use.
 366  *@ATK_LAYER_WINDOW: This layer is used for toplevel windows.
 367  *
 368  * Describes the layer of a component
 369  *
 370  * These enumerated "layer values" are used when determining which UI
 371  * rendering layer a component is drawn into, which can help in making
 372  * determinations of when components occlude one another.
 373  **/
 374 typedef enum
 375 {
 376   ATK_LAYER_INVALID,
 377   ATK_LAYER_BACKGROUND,
 378   ATK_LAYER_CANVAS,
 379   ATK_LAYER_WIDGET,
 380   ATK_LAYER_MDI,
 381   ATK_LAYER_POPUP,
 382   ATK_LAYER_OVERLAY,
 383   ATK_LAYER_WINDOW
 384 } AtkLayer;
 385
 386 /**
 387  * AtkAttributeSet:
 388  *
 389  * This is a singly-linked list (a #GSList) of #AtkAttribute. It is
 390  * used by atk_text_get_run_attributes(),
 391  * atk_text_get_default_attributes(),
 392  * atk_editable_text_set_run_attributes(),
 393  * atk_document_get_attributes() and atk_object_get_attributes()
 394  **/
 395 typedef GSList AtkAttributeSet;
 396
 397 /**
 398  * AtkAttribute:
 399  * @name: The attribute name.
 400  * @value: the value of the attribute, represented as a string.
 401  *
 402  * AtkAttribute is a string name/value pair representing a generic
 403  * attribute. This can be used to expose additional information from
 404  * an accessible object as a whole (see atk_object_get_attributes())
 405  * or an document (see atk_document_get_attributes()). In the case of
 406  * text attributes (see atk_text_get_default_attributes()),
 407  * #AtkTextAttribute enum defines all the possible text attribute
 408  * names. You can use atk_text_attribute_get_name() to get the string
 409  * name from the enum value. See also atk_text_attribute_for_name()
 410  * and atk_text_attribute_get_value() for more information.
 411  *
 412  * A string name/value pair representing a generic attribute.
 413  **/
 414 typedef struct _AtkAttribute AtkAttribute;
 415
 416 struct _AtkAttribute {
 417   gchar* name;
 418   gchar* value;
 419 };
 420
 421 #define ATK_TYPE_OBJECT                           (atk_object_get_type ())
 422 #define ATK_OBJECT(obj)                           (G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_OBJECT, AtkObject))
 423 #define ATK_OBJECT_CLASS(klass)                   (G_TYPE_CHECK_CLASS_CAST ((klass), ATK_TYPE_OBJECT, AtkObjectClass))
 424 #define ATK_IS_OBJECT(obj)                        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_OBJECT))
 425 #define ATK_IS_OBJECT_CLASS(klass)                (G_TYPE_CHECK_CLASS_TYPE ((klass), ATK_TYPE_OBJECT))
 426 #define ATK_OBJECT_GET_CLASS(obj)                 (G_TYPE_INSTANCE_GET_CLASS ((obj), ATK_TYPE_OBJECT, AtkObjectClass))
 427
 428 #define ATK_TYPE_IMPLEMENTOR                      (atk_implementor_get_type ())
 429 #define ATK_IS_IMPLEMENTOR(obj)                   G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_IMPLEMENTOR)
 430 #define ATK_IMPLEMENTOR(obj)                      G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_IMPLEMENTOR, AtkImplementor)
 431 #define ATK_IMPLEMENTOR_GET_IFACE(obj)            (G_TYPE_INSTANCE_GET_INTERFACE ((obj), ATK_TYPE_IMPLEMENTOR, AtkImplementorIface))
 432
 433
 434 typedef struct _AtkImplementor            AtkImplementor; /* dummy typedef */
 435 typedef struct _AtkImplementorIface       AtkImplementorIface;
 436
 437
 438 typedef struct _AtkObject                 AtkObject;
 439 typedef struct _AtkObjectClass            AtkObjectClass;
 440 typedef struct _AtkRelationSet            AtkRelationSet;
 441 typedef struct _AtkStateSet               AtkStateSet;
 442
 443 /**
 444  * AtkPropertyValues:
 445  * @property_name: The name of the ATK property which has changed.
 446  * @old_value: NULL. This field is not used anymore.
 447  * @new_value: The new value of the named property.
 448  *
 449  * Note: @old_value field of #AtkPropertyValues will not contain a
 450  * valid value. This is a field defined with the purpose of contain
 451  * the previous value of the property, but is not used anymore.
 452  *
 453  **/
 454 struct _AtkPropertyValues
 455 {
 456   const gchar  *property_name;
 457   GValue old_value;
 458   GValue new_value;
 459 };
 460
 461 typedef struct _AtkPropertyValues        AtkPropertyValues;
 462
 463 /**
 464  * AtkFunction:
 465  * @user_data: custom data defined by the user
 466  *
 467  * An AtkFunction is a function definition used for padding which has
 468  * been added to class and interface structures to allow for expansion
 469  * in the future.
 470  *
 471  * Returns: not used
 472  */
 473 typedef gboolean (*AtkFunction)          (gpointer user_data);
 474 /*
 475  * For most properties the old_value field of AtkPropertyValues will
 476  * not contain a valid value.
 477  *
 478  * Currently, the only property for which old_value is used is
 479  * accessible-state; for instance if there is a focus state the
 480  * property change handler will be called for the object which lost the focus
 481  * with the old_value containing an AtkState value corresponding to focused
 482  * and the property change handler will be called for the object which
 483  * received the focus with the new_value containing an AtkState value
 484  * corresponding to focused.
 485  */
 486
 487 /**
 488  * AtkPropertyChangeHandler:
 489  * @obj: atkobject which property changes
 490  * @vals: values changed
 491  *
 492  * An AtkPropertyChangeHandler is a function which is executed when an
 493  * AtkObject's property changes value. It is specified in a call to
 494  * atk_object_connect_property_change_handler().
 495  *
 496  * Deprecated: Since 2.12.
 497  */
 498 typedef void (*AtkPropertyChangeHandler) (AtkObject* obj, AtkPropertyValues* vals);
 499
 500
 501 struct _AtkObject
 502 {
 503   GObject parent;
 504
 505   gchar *description;
 506   gchar *name;
 507   AtkObject *accessible_parent;
 508   AtkRole role;
 509   AtkRelationSet *relation_set;
 510   AtkLayer layer;
 511 };
 512
 513
 514 /**
 515  * AtkObjectClass:
 516  * @connect_property_change_handler: specifies a function to be called
 517  *   when a property changes value. This virtual function is
 518  *   deprecated since 2.12 and it should not be overriden. Connect
 519  *   directly to property-change or notify signal instead.
 520  * @remove_property_change_handler: removes a property changed handler
 521  *   as returned by @connect_property_change_handler. This virtual
 522  *   function is deprecated sice 2.12 and it should not be overriden.
 523  * @focus_event: The signal handler which is executed when there is a
 524  *   focus event for an object. This virtual function is deprecated
 525  *   since 2.9.4 and it should not be overriden. Use
 526  *   state-changed:focused signal instead.
 527  */
 528 struct _AtkObjectClass
 529 {
 530   GObjectClass parent;
 531
 532   /*
 533    * Gets the accessible name of the object
 534    */
 535   const gchar*             (* get_name)            (AtkObject                *accessible);
 536   /*
 537    * Gets the accessible description of the object
 538    */
 539   const gchar*             (* get_description)     (AtkObject                *accessible);
 540   /*
 541    * Gets the accessible parent of the object
 542    */
 543   AtkObject*               (*get_parent)           (AtkObject                *accessible);
 544
 545   /*
 546    * Gets the number of accessible children of the object
 547    */
 548   gint                    (* get_n_children)       (AtkObject                *accessible);
 549   /*
 550    * Returns a reference to the specified accessible child of the object.
 551    * The accessible children are 0-based so the first accessible child is
 552    * at index 0, the second at index 1 and so on.
 553    */
 554   AtkObject*              (* ref_child)            (AtkObject                *accessible,
 555                                                     gint                      i);
 556   /*
 557    * Gets the 0-based index of this object in its parent; returns -1 if the
 558    * object does not have an accessible parent.
 559    */
 560   gint                    (* get_index_in_parent) (AtkObject                 *accessible);
 561   /*
 562    * Gets the RelationSet associated with the object
 563    */
 564   AtkRelationSet*         (* ref_relation_set)    (AtkObject                 *accessible);
 565   /*
 566    * Gets the role of the object
 567    */
 568   AtkRole                 (* get_role)            (AtkObject                 *accessible);
 569   AtkLayer                (* get_layer)           (AtkObject                 *accessible);
 570   gint                    (* get_mdi_zorder)      (AtkObject                 *accessible);
 571   /*
 572    * Gets the state set of the object
 573    */
 574   AtkStateSet*            (* ref_state_set)       (AtkObject                 *accessible);
 575   /*
 576    * Sets the accessible name of the object
 577    */
 578   void                    (* set_name)            (AtkObject                 *accessible,
 579                                                    const gchar               *name);
 580   /*
 581    * Sets the accessible description of the object
 582    */
 583   void                    (* set_description)     (AtkObject                 *accessible,
 584                                                    const gchar               *description);
 585   /*
 586    * Sets the accessible parent of the object
 587    */
 588   void                    (* set_parent)          (AtkObject                 *accessible,
 589                                                    AtkObject                 *parent);
 590   /*
 591    * Sets the accessible role of the object
 592    */
 593   void                    (* set_role)            (AtkObject                 *accessible,
 594                                                    AtkRole                   role);
 595   /*
 596    * Specifies a function to be called when a property changes value
 597    */
 598 guint                     (* connect_property_change_handler)    (AtkObject
 599                  *accessible,
 600                                                                   AtkPropertyChangeHandler       *handler);
 601   /*
 602    * Removes a property change handler which was specified using
 603    * connect_property_change_handler
 604    */
 605 void                      (* remove_property_change_handler)     (AtkObject
 606                 *accessible,
 607                                                                   guint
 608                 handler_id);
 609 void                      (* initialize)                         (AtkObject                     *accessible,
 610                                                                   gpointer                      data);
 611   /*
 612    * The signal handler which is executed when there is a change in the
 613    * children of the object
 614    */
 615   void                    (* children_changed)    (AtkObject                  *accessible,
 616                                                    guint                      change_index,
 617                                                    gpointer                   changed_child);
 618   /*
 619    * The signal handler which is executed  when there is a focus event
 620    * for an object.
 621    */
 622   void                    (* focus_event)         (AtkObject                  *accessible,
 623                                                    gboolean                   focus_in);
 624   /*
 625    * The signal handler which is executed  when there is a property_change
 626    * signal for an object.
 627    */
 628   void                    (* property_change)     (AtkObject                  *accessible,
 629                                                    AtkPropertyValues          *values);
 630   /*
 631    * The signal handler which is executed  when there is a state_change
 632    * signal for an object.
 633    */
 634   void                    (* state_change)        (AtkObject                  *accessible,
 635                                                    const gchar                *name,
 636                                                    gboolean                   state_set);
 637   /*
 638    * The signal handler which is executed when there is a change in the
 639    * visible data for an object
 640    */
 641   void                    (*visible_data_changed) (AtkObject                  *accessible);
 642
 643   /*
 644    * The signal handler which is executed when there is a change in the
 645    * 'active' child or children of the object, for instance when
 646    * interior focus changes in a table or list.  This signal should be emitted
 647    * by objects whose state includes ATK_STATE_MANAGES_DESCENDANTS.
 648    */
 649   void                    (*active_descendant_changed) (AtkObject                  *accessible,
 650                                                         gpointer                   *child);
 651
 652   /*
 653    * Gets a list of properties applied to this object as a whole, as an #AtkAttributeSet consisting of name-value pairs.
 654    * Since ATK 1.12
 655    */
 656   AtkAttributeSet*        (*get_attributes)            (AtkObject                  *accessible);
 657
 658   const gchar*            (*get_object_locale)         (AtkObject                  *accessible);
 659
 660   AtkFunction             pad1;
 661 };
 662
 663 ATK_AVAILABLE_IN_ALL
 664 GType            atk_object_get_type   (void);
 665
 666 /**
 667  * AtkImplementorIface:
 668  *
 669  * The AtkImplementor interface is implemented by objects for which
 670  * AtkObject peers may be obtained via calls to
 671  * iface->(ref_accessible)(implementor);
 672  */
 673 struct _AtkImplementorIface
 674 {
 675   GTypeInterface parent;
 676
 677   AtkObject*   (*ref_accessible) (AtkImplementor *implementor);
 678 };
 679
 680 ATK_AVAILABLE_IN_ALL
 681 GType atk_implementor_get_type (void);
 682 ATK_AVAILABLE_IN_ALL
 683 AtkObject*              atk_implementor_ref_accessible            (AtkImplementor *implementor);
 684
 685 /*
 686  * Properties directly supported by AtkObject
 687  */
 688
 689 ATK_AVAILABLE_IN_ALL
 690 const gchar*            atk_object_get_name                       (AtkObject *accessible);
 691 ATK_AVAILABLE_IN_ALL
 692 const gchar*            atk_object_get_description                (AtkObject *accessible);
 693 ATK_AVAILABLE_IN_ALL
 694 AtkObject*              atk_object_get_parent                     (AtkObject *accessible);
 695 ATK_AVAILABLE_IN_ALL
 696 AtkObject*              atk_object_peek_parent                    (AtkObject *accessible);
 697 ATK_AVAILABLE_IN_ALL
 698 gint                    atk_object_get_n_accessible_children      (AtkObject *accessible);
 699 ATK_AVAILABLE_IN_ALL
 700 AtkObject*              atk_object_ref_accessible_child           (AtkObject *accessible,
 701                                                                    gint        i);
 702 ATK_AVAILABLE_IN_ALL
 703 AtkRelationSet*         atk_object_ref_relation_set               (AtkObject *accessible);
 704 ATK_AVAILABLE_IN_ALL
 705 AtkRole                 atk_object_get_role                       (AtkObject *accessible);
 706
 707 ATK_DEPRECATED_FOR(atk_component_get_layer)
 708 AtkLayer                atk_object_get_layer                      (AtkObject *accessible);
 709 ATK_DEPRECATED_FOR(atk_component_get_mdi_zorder)
 710 gint                    atk_object_get_mdi_zorder                 (AtkObject *accessible);
 711
 712 ATK_AVAILABLE_IN_ALL
 713 AtkAttributeSet*        atk_object_get_attributes                 (AtkObject *accessible);
 714 ATK_AVAILABLE_IN_ALL
 715 AtkStateSet*            atk_object_ref_state_set                  (AtkObject *accessible);
 716 ATK_AVAILABLE_IN_ALL
 717 gint                    atk_object_get_index_in_parent            (AtkObject *accessible);
 718 ATK_AVAILABLE_IN_ALL
 719 void                    atk_object_set_name                       (AtkObject *accessible,
 720                                                                    const gchar *name);
 721 ATK_AVAILABLE_IN_ALL
 722 void                    atk_object_set_description                (AtkObject *accessible,
 723                                                                    const gchar *description);
 724 ATK_AVAILABLE_IN_ALL
 725 void                    atk_object_set_parent                     (AtkObject *accessible,
 726                                                                    AtkObject *parent);
 727 ATK_AVAILABLE_IN_ALL
 728 void                    atk_object_set_role                       (AtkObject *accessible,
 729                                                                    AtkRole   role);
 730
 731
 732 ATK_DEPRECATED_IN_2_12
 733 guint                atk_object_connect_property_change_handler  (AtkObject                      *accessible,
 734                                                                   AtkPropertyChangeHandler       *handler);
 735 ATK_DEPRECATED_IN_2_12
 736 void                 atk_object_remove_property_change_handler   (AtkObject                      *accessible,
 737                                                                   guint                          handler_id);
 738
 739 ATK_AVAILABLE_IN_ALL
 740 void                 atk_object_notify_state_change              (AtkObject                      *accessible,
 741                                                                   AtkState                       state,
 742                                                                   gboolean                       value);
 743 ATK_AVAILABLE_IN_ALL
 744 void                 atk_object_initialize                       (AtkObject                     *accessible,
 745                                                                   gpointer                      data);
 746
 747 ATK_AVAILABLE_IN_ALL
 748 const gchar*          atk_role_get_name      (AtkRole         role);
 749 ATK_AVAILABLE_IN_ALL
 750 AtkRole               atk_role_for_name      (const gchar     *name);
 751
 752
 753 /* NEW in 1.1: convenience API */
 754 ATK_AVAILABLE_IN_ALL
 755 gboolean              atk_object_add_relationship              (AtkObject      *object,
 756                                                                 AtkRelationType relationship,
 757                                                                 AtkObject      *target);
 758 ATK_AVAILABLE_IN_ALL
 759 gboolean              atk_object_remove_relationship           (AtkObject      *object,
 760                                                                 AtkRelationType relationship,
 761                                                                 AtkObject      *target);
 762 ATK_AVAILABLE_IN_ALL
 763 const gchar*          atk_role_get_localized_name              (AtkRole     role);
 764 ATK_DEPRECATED_IN_2_12
 765 AtkRole               atk_role_register                        (const gchar *name);
 766 ATK_AVAILABLE_IN_2_8
 767 const gchar*          atk_object_get_object_locale             (AtkObject   *accessible);
 768
 769 G_END_DECLS
 770
 771 #endif /* __ATK_OBJECT_H__ */