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gecko-dev/accessible/public/nsIAccessible.idl

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Original Author: Eric D Vaughan (evaughan@netscape.com)
* Contributor(s): Aaron Leventhal (aaronl@netscape.com)
* John Gaunt (jgaunt@netscape.com)
* Kyle Yuan (kyle.yuan@sun.com)
* Håkan Waara (hwaara@gmail.com)
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsISupports.idl"
#include "nsIArray.idl"
interface nsIPersistentProperties;
/**
* A cross-platform interface that supports platform-specific
* accessibility APIs like MSAA and ATK. Contains the sum of what's needed
* to support IAccessible as well as ATK's generic accessibility objects.
* Can also be used by in-process accessibility clients to get information
* about objects in the accessible tree. The accessible tree is a subset of
* nodes in the DOM tree -- such as documents, focusable elements and text.
* Mozilla creates the implementations of nsIAccessible on demand.
* See http://www.mozilla.org/projects/ui/accessibility for more information.
*
* @status UNDER_REVIEW
*/
[scriptable, uuid(c711b078-e76a-4136-9d51-e38b6c3a4cec)]
interface nsIAccessible : nsISupports
{
/**
* Parent node in accessible tree.
*/
readonly attribute nsIAccessible parent;
/**
* Next sibling in accessible tree
*/
readonly attribute nsIAccessible nextSibling;
/**
* Previous sibling in accessible tree
*/
readonly attribute nsIAccessible previousSibling;
/**
* First child in accessible tree
*/
readonly attribute nsIAccessible firstChild;
/**
* Last child in accessible tree
*/
readonly attribute nsIAccessible lastChild;
/**
* Array of all this element's children.
*/
readonly attribute nsIArray children;
/**
* Number of accessible children
*/
readonly attribute long childCount;
/**
* The 0-based index of this accessible in its parent's list of children,
* or -1 if this accessible does not have a parent.
*/
readonly attribute long indexInParent;
/**
* Accessible name -- the main text equivalent for this node
*/
attribute AString name;
/**
* Accessible value -- a number or a secondary text equivalent for this node
* Widgets that use role attribute can force a value using the valuenow attribute
*/
readonly attribute AString value;
/**
* Accessible description -- long text associated with this node
*/
readonly attribute AString description;
/**
* Provides localized string of accesskey name, such as Alt+D.
* The modifier may be affected by user and platform preferences.
* Usually alt+letter, or just the letter alone for menu items.
*/
readonly attribute AString keyboardShortcut;
/**
* Provides localized string of global keyboard accelerator, such
* as Ctrl+O for Open file
*/
readonly attribute AString keyBinding;
/**
* Natural enumerated accessible role for the associated element.
* The values depend on platform because of variations.
* See the ROLE_* constants defined later in this file.
* This does not take into account role attribute as the finalRole does.
*/
readonly attribute unsigned long role;
/**
* Enumerated accessible role. The values depend on platform because of variations.
* See the ROLE_* constants defined later in this file.
* Widgets can use role attribute to force the final role
*/
readonly attribute unsigned long finalRole;
/**
* Accessible states -- bit field which describes boolean properties of node.
* See the STATE_* constants defined later in this file.
* Many states are only valid given a certain role attribute that supports them
*/
readonly attribute unsigned long finalState;
/**
* Extended accessible states -- second bit field describing node
*/
readonly attribute unsigned long extState;
/**
* True if this element is live in an editor.
* False if the content is being displayed but not edited.
*/
readonly attribute boolean isEditable;
/**
* Help text associated with node
*/
readonly attribute AString help;
/**
* Focused accessible child of node
*/
readonly attribute nsIAccessible focusedChild;
/**
* Attributes of accessible
*/
readonly attribute nsIPersistentProperties attributes;
/**
* Accessible child which contains the coordinate at (x, y) in screen pixels.
*/
nsIAccessible getChildAtPoint(in long x, in long y);
/**
* Nth accessible child using zero-based index or last child if index less than zero
*/
nsIAccessible getChildAt(in long aChildIndex);
/**
* Accessible node geometrically to the right of this one
*/
nsIAccessible getAccessibleToRight();
/**
* Accessible node geometrically to the left of this one
*/
nsIAccessible getAccessibleToLeft();
/**
* Accessible node geometrically above this one
*/
nsIAccessible getAccessibleAbove();
/**
* Accessible node geometrically below this one
*/
nsIAccessible getAccessibleBelow();
/**
* Accessible node related to this one
*/
nsIAccessible getAccessibleRelated(in unsigned long aRelationType);
void getBounds(out long x,
out long y,
out long width,
out long height);
/**
* Add or remove this accessible to the current selection
*/
void setSelected(in boolean isSelected);
/**
* Extend the current selection from its current accessible anchor node
* to this accessible
*/
void extendSelection();
/**
* Select this accessible node only
*/
void takeSelection();
/**
* Focus this accessible node,
* The state STATE_FOCUSABLE indicates whether this node is normally focusable.
* It is the callers responsibility to determine whether this node is focusable.
* accTakeFocus on a node that is not normally focusable (such as a table),
* will still set focus on that node, although normally that will not be visually
* indicated in most style sheets.
*/
void takeFocus();
/**
* The number of accessible actions associated with this accessible
*/
readonly attribute PRUint8 numActions;
/**
* The name of the accessible action at the given zero-based index
*/
AString getActionName(in PRUint8 index);
/**
* Perform the accessible action at the given zero-based index
* Action number 0 is the default action
*/
void doAction(in PRUint8 index);
/**
* Get a pointer to accessibility interface for this node, which is specific
* to the OS/accessibility toolkit we're running on.
*/
[noscript] void getNativeInterface(out voidPtr aOutAccessible);
/**
* MSAA State flags - used for bitfield. More than 1 allowed.
*/
const unsigned long STATE_UNAVAILABLE = 0x00000001; // Disabled, maps to opposite of Java ENABLED, Gnome/ATK SENSITIVE?
const unsigned long STATE_SELECTED = 0x00000002;
const unsigned long STATE_FOCUSED = 0x00000004;
const unsigned long STATE_PRESSED = 0x00000008;
const unsigned long STATE_CHECKED = 0x00000010;
const unsigned long STATE_MIXED = 0x00000020; // 3-state checkbox or toolbar button
const unsigned long STATE_READONLY = 0x00000040; // Maps to opposite of Java/Gnome/ATK EDITABLE state
const unsigned long STATE_HOTTRACKED = 0x00000080;
const unsigned long STATE_DEFAULT = 0x00000100;
const unsigned long STATE_EXPANDED = 0x00000200;
const unsigned long STATE_COLLAPSED = 0x00000400;
const unsigned long STATE_BUSY = 0x00000800;
const unsigned long STATE_FLOATING = 0x00001000; // Children "owned" not "contained" by parent
const unsigned long STATE_MARQUEED = 0x00002000;
const unsigned long STATE_ANIMATED = 0x00004000;
const unsigned long STATE_INVISIBLE = 0x00008000; // Programatically hidden
const unsigned long STATE_OFFSCREEN = 0x00010000; // Scrolled off
const unsigned long STATE_SIZEABLE = 0x00020000;
const unsigned long STATE_MOVEABLE = 0x00040000;
const unsigned long STATE_SELFVOICING = 0x00080000;
const unsigned long STATE_FOCUSABLE = 0x00100000;
const unsigned long STATE_SELECTABLE = 0x00200000;
const unsigned long STATE_LINKED = 0x00400000;
const unsigned long STATE_TRAVERSED = 0x00800000;
const unsigned long STATE_MULTISELECTABLE = 0x01000000; // Supports multiple selection
const unsigned long STATE_EXTSELECTABLE = 0x02000000; // Supports extended selection
const unsigned long STATE_ALERT_LOW = 0x04000000; // This information is of low priority
const unsigned long STATE_ALERT_MEDIUM = 0x08000000; // This information is of medium priority
const unsigned long STATE_ALERT_HIGH = 0x10000000; // This information is of high priority
const unsigned long STATE_PROTECTED = 0x20000000; // Maps to Gnome's *Role* ATK_ROLE_PASSWD_TEXT, nothing for Java?
const unsigned long STATE_HASPOPUP = 0x40000000; // New in MSAA 2.0
// Mapping important states that we don't have to unused alert states on MSAA
// as per discussions with AT vendors. On ATK there will be legitimate states for
// STATE_REQUIRED AND STATE_INVALID
const unsigned long STATE_REQUIRED = STATE_ALERT_LOW;
const unsigned long STATE_IMPORTANT = STATE_ALERT_MEDIUM; // Not currently used
const unsigned long STATE_INVALID = STATE_ALERT_HIGH;
const unsigned long STATE_CHECKABLE = STATE_MARQUEED;
/**
* Extended state flags (for now non-MSAA, for Java and Gnome/ATK support)
* "Extended state flags" has separate value space from "MSAA State flags".
*/
const unsigned long EXT_STATE_SUPPORTS_AUTOCOMPLETION = 0x00000001; // For editable areas that have any kind of autocompletion
const unsigned long EXT_STATE_DEFUNCT = 0x00000002; // Object no longer exists
const unsigned long EXT_STATE_SELECTABLE_TEXT = 0x00000004; // For text which is selectable, object must implement nsIAccessibleText
const unsigned long EXT_STATE_EDITABLE = 0x00000008; // Implements nsIAccessibleEditableText
const unsigned long EXT_STATE_ACTIVE = 0x00000010; // This window is currently the active window
const unsigned long EXT_STATE_MODAL = 0x00000020; // Must do something with control before leaving it
const unsigned long EXT_STATE_MULTI_LINE = 0x00000040; // Edit control that can take multiple lines
const unsigned long EXT_STATE_HORIZONTAL = 0x00000080; // Uses horizontal layout
const unsigned long EXT_STATE_OPAQUE = 0x00000100; // Indicates this object paints every pixel within its rectangular region.
const unsigned long EXT_STATE_SINGLE_LINE = 0x00000200; // This text object can only contain 1 line of text
const unsigned long EXT_STATE_TRANSIENT = 0x00000400; //
const unsigned long EXT_STATE_VERTICAL = 0x00000800; // Especially used for sliders and scrollbars
const unsigned long EXT_STATE_STALE = 0x00001000; // Object not dead, but not up-to-date either
const unsigned long EXT_STATE_ENABLED = 0x00002000; // A widget that is not unavailable
const unsigned long EXT_STATE_SENSITIVE = 0x00004000; // Same as ENABLED for now
const unsigned long EXT_STATE_EXPANDABLE = 0x00008000; // If COLLAPSED or EXPANDED
/**
* API states we map from opposite states
* VISIBLE -- mapped as the opposite of INVISIBLE
* SHOWING -- mapped as the opposite of OFFSCREEN
*
* ATK states we don't have in nsIAccessible:
* ARMED -- no clear use case, used briefly when button is activated
* HAS_TOOLTIP -- no known use case
* ICONIFIED -- Mozilla does not have elements which are collapsable into icons
* TRUNCATED -- need use case. Indicates that an object's onscreen content is truncated, e.g. a text value in a spreadsheet cell. No IA2 state.
*/
/**
* Relation Types -- most of these come from ATK's atkrelationtype.h
* When adding support for relations, make sure to add them to appropriate
* places in nsAccessibleWrap implementations
* RELATION_NULL:
* RELATION_CONTROLLED_BY: Controlled by one or more target objects.
* RELATION_CONTROLLER_FOR: Controller for one or more target objects.
* RELATION_LABEL_FOR: Label for one or more target objects.
* RELATION_LABELLED_BY: Labelled by one or more target objects.
* RELATION_MEMBER_OF: Member of a group of one or more target objects.
* RELATION_NODE_CHILD_OF: Cell in a treetable which is displayed because a
* cell in the same col is expanded & identifies it.
* RELATION_FLOWS_TO: Has content that flows logically to another
* object in a sequential way, e.g. text flow.
* RELATION_FLOWS_FROM: Has content that flows logically from another
* object in a sequential way, e.g. text flow.
* RELATION_SUBWINDOW_OF: Subwindow attached to a component but otherwise
* not connected in the UI hierarchy to that component.
* RELATION_EMBEDS: Visually embeds another object's content, i.e.
* this object's content flows around another's content.
* RELATION_EMBEDDED_BY: Inverse of RELATION_EMBEDS; this object's content
* is visually embedded in another object.
* RELATION_POPUP_FOR: Popup for another object.
* RELATION_PARENT_WINDOW_OF: Parent window of another object.
* RELATION_DEFAULT_BUTTON: Part of a form/dialog with a related default button.
* RELATION_DESCRIBED_BY: Described by one or more target objects.
* RELATION_DESCRIPTION_FOR: Description for one or more target objects.
*/
const unsigned long RELATION_NUL = 0x00; // ATK_RELATION_NUL
const unsigned long RELATION_CONTROLLED_BY = 0x01; // ATK_RELATION_CONTROLLED_BY
const unsigned long RELATION_CONTROLLER_FOR = 0x02; // ATK_RELATION_CONTROLLER_FOR
const unsigned long RELATION_LABEL_FOR = 0x03; // ATK_RELATION_LABEL_FOR
const unsigned long RELATION_LABELLED_BY = 0x04; // ATK_RELATION_LABELLED_BY
const unsigned long RELATION_MEMBER_OF = 0x05; // ATK_RELATION_MEMBER_OF
const unsigned long RELATION_NODE_CHILD_OF = 0x06; // ATK_RELATION_NODE_CHILD_OF
const unsigned long RELATION_FLOWS_TO = 0x07; // ATK_RELATION_FLOWS_TO
const unsigned long RELATION_FLOWS_FROM = 0x08; // ATK_RELATION_FLOWS_FROM
const unsigned long RELATION_SUBWINDOW_OF = 0x09; // ATK_RELATION_SUBWINDOW_OF
const unsigned long RELATION_EMBEDS = 0x0a; // ATK_RELATION_EMBEDS
const unsigned long RELATION_EMBEDDED_BY = 0x0b; // ATK_RELATION_EMBEDDED_BY
const unsigned long RELATION_POPUP_FOR = 0x0c; // ATK_RELATION_POPUP_FOR
const unsigned long RELATION_PARENT_WINDOW_OF = 0x0d; // ATK_RELATION_PARENT_WINDOW_OF
const unsigned long RELATION_DESCRIBED_BY = 0x0e; // ATK_RELATION_DESCRIBED_BY
const unsigned long RELATION_DESCRIPTION_FOR = 0x0f; // ATK_RELATION_DESCRIPTION_FOR
const unsigned long RELATION_DEFAULT_BUTTON = 0x4000; // MSAA only, no ATK relation
// Cross Platform Roles
// When adding a new role, be sure to also add it to nsRoleMap.h for each platform
const unsigned long ROLE_NOTHING = 0;
const unsigned long ROLE_TITLEBAR = 1;
const unsigned long ROLE_MENUBAR = 2;
const unsigned long ROLE_SCROLLBAR = 3;
const unsigned long ROLE_GRIP = 4;
const unsigned long ROLE_SOUND = 5;
const unsigned long ROLE_CURSOR = 6;
const unsigned long ROLE_CARET = 7;
const unsigned long ROLE_ALERT = 8;
const unsigned long ROLE_WINDOW = 9;
const unsigned long ROLE_CLIENT = 10;
const unsigned long ROLE_MENUPOPUP = 11;
const unsigned long ROLE_MENUITEM = 12;
const unsigned long ROLE_TOOLTIP = 13;
const unsigned long ROLE_APPLICATION = 14; // See also ROLE_APP_ROOT
const unsigned long ROLE_DOCUMENT = 15;
const unsigned long ROLE_PANE = 16;
const unsigned long ROLE_CHART = 17;
const unsigned long ROLE_DIALOG = 18;
const unsigned long ROLE_BORDER = 19;
const unsigned long ROLE_GROUPING = 20;
const unsigned long ROLE_SEPARATOR = 21;
const unsigned long ROLE_TOOLBAR = 22;
const unsigned long ROLE_STATUSBAR = 23;
const unsigned long ROLE_TABLE = 24;
const unsigned long ROLE_COLUMNHEADER = 25;
const unsigned long ROLE_ROWHEADER = 26;
const unsigned long ROLE_COLUMN = 27;
const unsigned long ROLE_ROW = 28;
const unsigned long ROLE_CELL = 29;
const unsigned long ROLE_LINK = 30;
const unsigned long ROLE_HELPBALLOON = 31;
const unsigned long ROLE_CHARACTER = 32;
const unsigned long ROLE_LIST = 33;
const unsigned long ROLE_LISTITEM = 34;
const unsigned long ROLE_OUTLINE = 35;
const unsigned long ROLE_OUTLINEITEM = 36;
const unsigned long ROLE_PAGETAB = 37;
const unsigned long ROLE_PROPERTYPAGE = 38;
const unsigned long ROLE_INDICATOR = 39;
const unsigned long ROLE_GRAPHIC = 40;
const unsigned long ROLE_STATICTEXT = 41;
const unsigned long ROLE_TEXT_LEAF = 42;
const unsigned long ROLE_PUSHBUTTON = 43;
const unsigned long ROLE_CHECKBUTTON = 44;
const unsigned long ROLE_RADIOBUTTON = 45;
const unsigned long ROLE_COMBOBOX = 46;
const unsigned long ROLE_DROPLIST = 47;
const unsigned long ROLE_PROGRESSBAR = 48;
const unsigned long ROLE_DIAL = 49;
const unsigned long ROLE_HOTKEYFIELD = 50;
const unsigned long ROLE_SLIDER = 51;
const unsigned long ROLE_SPINBUTTON = 52;
const unsigned long ROLE_DIAGRAM = 53;
const unsigned long ROLE_ANIMATION = 54;
const unsigned long ROLE_EQUATION = 55;
const unsigned long ROLE_BUTTONDROPDOWN = 56;
const unsigned long ROLE_BUTTONMENU = 57;
const unsigned long ROLE_BUTTONDROPDOWNGRID = 58;
const unsigned long ROLE_WHITESPACE = 59;
const unsigned long ROLE_PAGETABLIST = 60;
const unsigned long ROLE_CLOCK = 61;
const unsigned long ROLE_SPLITBUTTON = 62;
const unsigned long ROLE_IPADDRESS = 63;
const unsigned long ROLE_ACCEL_LABEL = 64;
const unsigned long ROLE_ARROW = 65;
const unsigned long ROLE_CANVAS = 66;
const unsigned long ROLE_CHECK_MENU_ITEM = 67;
const unsigned long ROLE_COLOR_CHOOSER = 68;
const unsigned long ROLE_DATE_EDITOR = 69;
const unsigned long ROLE_DESKTOP_ICON = 70;
const unsigned long ROLE_DESKTOP_FRAME = 71;
const unsigned long ROLE_DIRECTORY_PANE = 72;
const unsigned long ROLE_FILE_CHOOSER = 73;
const unsigned long ROLE_FONT_CHOOSER = 74;
const unsigned long ROLE_CHROME_WINDOW = 75;
const unsigned long ROLE_GLASS_PANE = 76;
const unsigned long ROLE_HTML_CONTAINER = 77;
const unsigned long ROLE_ICON = 78;
const unsigned long ROLE_LABEL = 79;
const unsigned long ROLE_LAYERED_PANE = 80;
const unsigned long ROLE_OPTION_PANE = 81;
const unsigned long ROLE_PASSWORD_TEXT = 82;
const unsigned long ROLE_POPUP_MENU = 83;
const unsigned long ROLE_RADIO_MENU_ITEM = 84;
const unsigned long ROLE_ROOT_PANE = 85;
const unsigned long ROLE_SCROLL_PANE = 86;
const unsigned long ROLE_SPLIT_PANE = 87;
const unsigned long ROLE_TABLE_COLUMN_HEADER = 88;
const unsigned long ROLE_TABLE_ROW_HEADER = 89;
const unsigned long ROLE_TEAR_OFF_MENU_ITEM = 90;
const unsigned long ROLE_TERMINAL = 91;
const unsigned long ROLE_TEXT_CONTAINER = 92;
const unsigned long ROLE_TOGGLE_BUTTON = 93;
const unsigned long ROLE_TREE_TABLE = 94;
const unsigned long ROLE_VIEWPORT = 95;
const unsigned long ROLE_HEADER = 96;
const unsigned long ROLE_FOOTER = 97;
const unsigned long ROLE_PARAGRAPH = 98;
const unsigned long ROLE_RULER = 99;
const unsigned long ROLE_AUTOCOMPLETE = 100;
const unsigned long ROLE_EDITBAR = 101;
const unsigned long ROLE_ENTRY = 102;
const unsigned long ROLE_CAPTION = 103;
const unsigned long ROLE_DOCUMENT_FRAME = 104;
const unsigned long ROLE_HEADING = 105;
const unsigned long ROLE_PAGE = 106;
const unsigned long ROLE_SECTION = 107;
const unsigned long ROLE_REDUNDANT_OBJECT = 108;
const unsigned long ROLE_FORM = 109;
const unsigned long ROLE_IME = 110;
const unsigned long ROLE_APP_ROOT = 111;
const unsigned long ROLE_PARENT_MENUITEM = 112;
const unsigned long ROLE_CALENDAR = 113;
const unsigned long ROLE_COMBOBOX_LIST = 114;
const unsigned long ROLE_COMBOBOX_LISTITEM = 115;
const unsigned long ROLE_LAST_ENTRY = 116; // Important -- helps ensure nsRoleMap's are synchronized
// MSAA relationship extensions to accNavigate
const unsigned long NAVRELATION_CONTROLLED_BY = 0x1000;
const unsigned long NAVRELATION_CONTROLLER_FOR = 0x1001;
const unsigned long NAVRELATION_LABEL_FOR = 0x1002;
const unsigned long NAVRELATION_LABELLED_BY = 0x1003;
const unsigned long NAVRELATION_MEMBER_OF = 0x1004;
const unsigned long NAVRELATION_NODE_CHILD_OF = 0x1005;
const unsigned long NAVRELATION_FLOWS_TO = 0x1006;
const unsigned long NAVRELATION_FLOWS_FROM = 0x1007;
const unsigned long NAVRELATION_SUBWINDOW_OF = 0x1008;
const unsigned long NAVRELATION_EMBEDS = 0x1009;
const unsigned long NAVRELATION_EMBEDDED_BY = 0x100a;
const unsigned long NAVRELATION_POPUP_FOR = 0x100b;
const unsigned long NAVRELATION_PARENT_WINDOW_OF = 0x100c;
const unsigned long NAVRELATION_DEFAULT_BUTTON = 0x100d;
const unsigned long NAVRELATION_DESCRIBED_BY = 0x100e;
const unsigned long NAVRELATION_DESCRIPTION_FOR = 0x100f;
};
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