accessible/public/nsIAccessibleRetrieval.idl
author Jim Blandy <jimb@mozilla.org>
Wed, 18 Feb 2009 09:14:51 -0800
changeset 25144 00f309d0d507ad18969c99b1c558c213892587ba
parent 6812 958482e6bb9211bd19a7442d32e49940995cc682
child 37807 70da16e4c483b4e5bd0de5cef6994e0c90b93371
permissions -rw-r--r--
Bug 391488: Eliminate PTRDIFF macro; delete jssttddef.h. r=jimb Delete jsstddef.h, since its only remaining purpose is to make certain Win16-specific definitions; we don't support Win16 any more. In particular, we can just subtract pointers now, so the PTRDIFF macro is unnecessary noise. Most places get stddef.h via jstypes.h or some other header, so we can just delete #inclusions of jstddef.h. The exception is jskwgen.h, so there we explicitly include <stddef.h> instead.

/* -*- 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: Aaron Leventhal (aaronl@netscape.com)
 * Contributor(s): Kyle Yuan (kyle.yuan@sun.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
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#include "nsISupports.idl"

interface nsIDOMNode;
interface nsIAccessible;
interface nsIWeakReference;
interface nsIPresShell;
interface nsIDOMWindow;
interface nsIAccessNode;
interface nsIDOMDOMStringList;


/**
 * An interface for in-process accessibility clients
 * wishing to get an nsIAccessible or nsIAccessNode for
 * a given DOM node.
 * More documentation at:
 *   http://www.mozilla.org/projects/ui/accessibility
 *
 * @status UNDER_REVIEW
 */
[scriptable, uuid(244e4c67-a1d3-44f2-9cab-cdaa31b68046)]
interface nsIAccessibleRetrieval : nsISupports
{
  /**
   * Return an nsIAccessible for a DOM node in pres shell 0.
   * Create a new accessible of the appropriate type if necessary,
   * or use one from the accessibility cache if it already exists.
   * @param aNode The DOM node to get an accessible for.
   * @return The nsIAccessible for the given DOM node.
   */
  nsIAccessible getAccessibleFor(in nsIDOMNode aNode);

  /**
   * The same like getAccessibleFor method except it returns accessible only if
   * it is attached, i.e. accessible is certified to be a descendent of the root
   * accessible.
   *
   * @param aNode - the DOM node to get an accessible for.
   *
   * @return - the accessible for the given DOM node.
   */
  nsIAccessible getAttachedAccessibleFor(in nsIDOMNode aNode);

  /**
   * Return an DOM node that is relevant to attached accesible check. This
   * node is either from bindings chain if given node is anonymous and owner
   * binding denies accessible in anonymous content or given node (it's not
   * important whether it is accessible or not). This method doesn't create
   * accessible object for returned node.
   *
   * @param aNode - the DOM node to get relevant content node.
   *
   * @return - the DOM node for parent attached accessible
   */
  nsIDOMNode getRelevantContentNodeFor(in nsIDOMNode aNode);

  /**
   * Return an nsIAccessible for a DOM node in pres shell for this DOM window.
   * Create a new accessible of the appropriate type if necessary,
   * or use one from the accessibility cache if it already exists.
   * @param aNode   The DOM node to get an accessible for.
   * @param aDOMWin The DOM window containing the node.
   * @return The nsIAccessible for the given DOM node.
   */
  nsIAccessible getAccessibleInWindow(in nsIDOMNode aNode, in nsIDOMWindow aDOMWin);

  /**
   * Return an nsIAccessible for a DOM node in the given weak shell.
   * Create a new accessible of the appropriate type if necessary,
   * or use one from the accessibility cache if it already exists.
   * @param aNode      The DOM node to get an accessible for.
   * @param aPresShell The presentation shell which contains layout info for the DOM node.
   * @return The nsIAccessible for the given DOM node.
   */
  nsIAccessible getAccessibleInWeakShell(in nsIDOMNode aNode, in nsIWeakReference aPresShell);

  /**
   * Return an nsIAccessible for a DOM node in the given pres shell.
   * Create a new accessible of the appropriate type if necessary,
   * or use one from the accessibility cache if it already exists.
   * @param aNode      The DOM node to get an accessible for.
   * @param aPresShell The presentation shell which contains layout info for the DOM node.
   * @return The nsIAccessible for the given DOM node.
   */
  nsIAccessible getAccessibleInShell(in nsIDOMNode aNode, in nsIPresShell aPresShell);
  
   /**
    * Return an nsIAccessNode for an already created DOM node in the given weak shell.
    * Does not create a new one -- only returns cached access nodes.
    * @param aNode      The DOM node to get an access node for.
    * @param aPresShell The presentation shell which contains layout info for the DOM node.
    * @return The nsIAccessNode for the given DOM node or null if
    *         an access node does not already exist for this DOM node.
    */
  nsIAccessNode getCachedAccessNode(in nsIDOMNode aNode, in nsIWeakReference aShell);

   /**
    * Return an nsIAccessible for an already created DOM node in the given weak shell.
    * Does not create a new one -- only returns cached accessibles.
    * @param aNode      The DOM node to get an accessible for.
    * @param aPresShell The presentation shell which contains layout info for the DOM node.
    * @return The nsIAccessible for the given DOM node or null if
    *         an accessible does not already exist for this DOM node.
    */
  nsIAccessible getCachedAccessible(in nsIDOMNode aNode, in nsIWeakReference aShell);

   /**
    * Returns accessible role as a string.
    *
    * @param aRole - the accessible role constants.
    */
  AString getStringRole(in unsigned long aRole);

   /**
    * Returns list which contains accessible states as a strings.
    *
    * @param aStates - accessible states.
    * @param aExtraStates - accessible extra states.
    */
  nsIDOMDOMStringList getStringStates(in unsigned long aStates,
                                      in unsigned long aExtraStates);

  /**
   * Get the type of accessible event as a string.
   *
   * @param aEventType - the accessible event type constant
   * @return - accessible event type presented as human readable string
   */
  AString getStringEventType(in unsigned long aEventType);

  /**
   * Get the type of accessible relation as a string.
   *
   * @param aRelationType - the accessible relation type constant
   * @return - accessible relation type presented as human readable string
   */
  AString getStringRelationType(in unsigned long aRelationType);
};


%{ C++

// for component registration
// {663CA4A8-D219-4000-925D-D8F66406B626}
#define NS_ACCESSIBLE_RETRIEVAL_CID \
{ 0x663ca4a8, 0xd219, 0x4000, { 0x92, 0x5d, 0xd8, 0xf6, 0x64, 0x6, 0xb6, 0x26 } }

%}