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327 lines
11 KiB
Plaintext
327 lines
11 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Original Author: Eric D Vaughan (evaughan@netscape.com)
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* Contributor(s): Aaron Leventhal (aaronl@netscape.com)
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* John Gaunt (jgaunt@netscape.com)
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* Kyle Yuan (kyle.yuan@sun.com)
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* Håkan Waara (hwaara@gmail.com)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsISupports.idl"
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#include "nsIArray.idl"
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interface nsIPersistentProperties;
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interface nsIDOMDOMStringList;
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interface nsIAccessibleRelation;
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/**
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* A cross-platform interface that supports platform-specific
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* accessibility APIs like MSAA and ATK. Contains the sum of what's needed
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* to support IAccessible as well as ATK's generic accessibility objects.
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* Can also be used by in-process accessibility clients to get information
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* about objects in the accessible tree. The accessible tree is a subset of
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* nodes in the DOM tree -- such as documents, focusable elements and text.
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* Mozilla creates the implementations of nsIAccessible on demand.
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* See http://www.mozilla.org/projects/ui/accessibility for more information.
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*/
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[scriptable, uuid(c81d8f8c-8585-4094-bc7c-71dd01494906)]
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interface nsIAccessible : nsISupports
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{
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/**
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* Parent node in accessible tree.
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*/
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readonly attribute nsIAccessible parent;
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/**
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* Next sibling in accessible tree
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*/
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readonly attribute nsIAccessible nextSibling;
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/**
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* Previous sibling in accessible tree
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*/
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readonly attribute nsIAccessible previousSibling;
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/**
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* First child in accessible tree
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*/
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readonly attribute nsIAccessible firstChild;
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/**
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* Last child in accessible tree
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*/
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readonly attribute nsIAccessible lastChild;
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/**
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* Array of all this element's children.
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*/
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readonly attribute nsIArray children;
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/**
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* Number of accessible children
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*/
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readonly attribute long childCount;
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/**
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* The 0-based index of this accessible in its parent's list of children,
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* or -1 if this accessible does not have a parent.
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*/
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readonly attribute long indexInParent;
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/**
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* Accessible name -- the main text equivalent for this node. The name is
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* specified by ARIA or by native markup. Example of ARIA markup is
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* aria-labelledby attribute placed on element of this accessible. Example
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* of native markup is HTML label linked with HTML element of this accessible.
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*
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* Value can be string or null. A null value indicates that AT may attempt to
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* compute the name. Any string value, including the empty string, should be
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* considered author-intentional, and respected.
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*/
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attribute AString name;
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/**
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* Accessible value -- a number or a secondary text equivalent for this node
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* Widgets that use role attribute can force a value using the valuenow attribute
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*/
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readonly attribute AString value;
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/**
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* Accessible description -- long text associated with this node
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*/
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readonly attribute AString description;
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/**
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* Provides localized string of accesskey name, such as Alt+D.
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* The modifier may be affected by user and platform preferences.
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* Usually alt+letter, or just the letter alone for menu items.
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*/
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readonly attribute AString keyboardShortcut;
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/**
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* Provides localized string of global keyboard accelerator for default
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* action, such as Ctrl+O for Open file
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*/
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readonly attribute AString defaultKeyBinding;
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/**
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* Provides array of localized string of global keyboard accelerator for
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* the given action index supported by accessible.
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*
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* @param aActionIndex - index of the given action
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*/
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nsIDOMDOMStringList getKeyBindings(in PRUint8 aActionIndex);
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/**
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* Enumerated accessible role (see the constants defined in nsIAccessibleRole).
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*
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* @note The values might depend on platform because of variations. Widgets
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* can use ARIA role attribute to force the final role.
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*/
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readonly attribute unsigned long role;
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/**
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* Accessible states -- bit fields which describe boolean properties of node.
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* Many states are only valid given a certain role attribute that supports
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* them.
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*
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* @param aState - the first bit field (see nsIAccessibleStates::STATE_*
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* constants)
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* @param aExtraState - the second bit field
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* (see nsIAccessibleStates::EXT_STATE_* constants)
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*/
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void getState(out unsigned long aState, out unsigned long aExtraState);
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/**
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* Help text associated with node
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*/
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readonly attribute AString help;
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/**
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* Focused accessible child of node
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*/
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readonly attribute nsIAccessible focusedChild;
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/**
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* Attributes of accessible
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*/
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readonly attribute nsIPersistentProperties attributes;
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/**
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* Returns grouping information. Used for tree items, list items, tab panel
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* labels, radio buttons, etc. Also used for collectons of non-text objects.
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*
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* @param groupLevel - 1-based, similar to ARIA 'level' property
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* @param similarItemsInGroup - 1-based, similar to ARIA 'setsize' property,
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* inclusive of the current item
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* @param positionInGroup - 1-based, similar to ARIA 'posinset' property
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*/
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void groupPosition(out long aGroupLevel, out long aSimilarItemsInGroup,
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out long aPositionInGroup);
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/**
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* Accessible child which contains the coordinate at (x, y) in screen pixels.
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* If the point is in the current accessible but not in a child, the
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* current accessible will be returned.
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* If the point is in neither the current accessible or a child, then
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* null will be returned.
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*
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* @param x screen's x coordinate
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* @param y screen's y coordinate
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* @return the deepest accessible child containing the given point
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*/
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nsIAccessible getChildAtPoint(in long x, in long y);
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/**
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* Deepest accessible child which contains the coordinate at (x, y) in screen
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* pixels. If the point is in the current accessible but not in a child, the
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* current accessible will be returned. If the point is in neither the current
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* accessible or a child, then null will be returned.
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*
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* @param x screen's x coordinate
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* @param y screen's y coordinate
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* @return the deepest accessible child containing the given point
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*/
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nsIAccessible getDeepestChildAtPoint(in long x, in long y);
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/**
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* Nth accessible child using zero-based index or last child if index less than zero
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*/
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nsIAccessible getChildAt(in long aChildIndex);
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/**
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* Accessible node geometrically to the right of this one
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*/
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nsIAccessible getAccessibleToRight();
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/**
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* Accessible node geometrically to the left of this one
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*/
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nsIAccessible getAccessibleToLeft();
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/**
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* Accessible node geometrically above this one
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*/
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nsIAccessible getAccessibleAbove();
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/**
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* Accessible node geometrically below this one
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*/
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nsIAccessible getAccessibleBelow();
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/**
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* Return accessible relation by the given relation type (see.
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* constants defined in nsIAccessibleRelation).
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*/
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nsIAccessibleRelation getRelationByType(in unsigned long aRelationType);
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/**
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* Returns the number of accessible relations for this object.
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*/
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readonly attribute unsigned long relationsCount;
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/**
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* Returns one accessible relation for this object.
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*
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* @param index - relation index (0-based)
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*/
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nsIAccessibleRelation getRelation(in unsigned long index);
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/**
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* Returns multiple accessible relations for this object.
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*/
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nsIArray getRelations();
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/**
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* Return accessible's x and y coordinates relative to the screen and
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* accessible's width and height.
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*/
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void getBounds(out long x, out long y, out long width, out long height);
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/**
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* Add or remove this accessible to the current selection
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*/
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void setSelected(in boolean isSelected);
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/**
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* Extend the current selection from its current accessible anchor node
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* to this accessible
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*/
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void extendSelection();
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/**
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* Select this accessible node only
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*/
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void takeSelection();
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/**
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* Focus this accessible node,
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* The state STATE_FOCUSABLE indicates whether this node is normally focusable.
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* It is the callers responsibility to determine whether this node is focusable.
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* accTakeFocus on a node that is not normally focusable (such as a table),
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* will still set focus on that node, although normally that will not be visually
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* indicated in most style sheets.
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*/
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void takeFocus();
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/**
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* The number of accessible actions associated with this accessible
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*/
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readonly attribute PRUint8 numActions;
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/**
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* The name of the accessible action at the given zero-based index
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*/
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AString getActionName(in PRUint8 index);
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/**
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* The description of the accessible action at the given zero-based index
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*/
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AString getActionDescription(in PRUint8 aIndex);
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/**
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* Perform the accessible action at the given zero-based index
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* Action number 0 is the default action
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*/
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void doAction(in PRUint8 index);
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/**
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* Get a pointer to accessibility interface for this node, which is specific
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* to the OS/accessibility toolkit we're running on.
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*/
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[noscript] void getNativeInterface(out voidPtr aOutAccessible);
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};
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