accessible/public/nsIAccessibleDocument.idl
author Jim Blandy <jimb@mozilla.org>
Wed, 18 Feb 2009 09:14:51 -0800
changeset 25144 00f309d0d507ad18969c99b1c558c213892587ba
parent 8937 3c8e96943d126ef1893b2091ce622f530867f97e
child 38062 72b38a63ccc6d8023e1a23f260dbb9b28f015bfc
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 -*-
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 * Original Author: Aaron Leventhal (aaronl@netscape.com)
 * Contributor(s): John Gaunt (jgaunt@netscape.com)
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#include "nsISupports.idl"

interface nsIAccessible;
interface nsIAccessNode;
interface nsIDOMDocument;
interface nsIDOMNode;
interface nsIDOMWindow;

/**
 * An interface for in-process accessibility clients
 * that wish to retrieve information about a document.
 * When accessibility is turned on in Gecko,
 * there is an nsIAccessibleDocument for each document
 * whether it is XUL, HTML or whatever.
 * You can QueryInterface to nsIAccessibleDocument from
 * the nsIAccessible or nsIAccessNode for the root node
 * of a document. You can also get one from 
 * nsIAccessNode::GetAccessibleDocument() or 
 * nsIAccessibleEvent::GetAccessibleDocument()
 *
 * @status UNDER_REVIEW
 */
[scriptable, uuid(b7ae45bd-21e9-4ed5-a67e-86448b25d56b)]
interface nsIAccessibleDocument : nsISupports
{
  /**
   * The URL of the document
   */
  readonly attribute AString URL;

  /**
   * The title of the document, as specified in the document.
   */
  readonly attribute AString title;

  /**
   * The mime type of the document
   */
  readonly attribute AString mimeType;

  /**
   * The doc type of the document, as specified in the document.
   */
  readonly attribute AString docType;

  /**
   * The nsIDOMDocument interface associated with this document.
   */
  readonly attribute nsIDOMDocument document;

  /**
   * The nsIDOMWindow that the document resides in.
   */
  readonly attribute nsIDOMWindow window;

  /**
   * The namespace for each ID that is handed back.
   */
  AString getNameSpaceURIForID(in short nameSpaceID);

  /**
   * The window handle for the OS window the document is being displayed in.
   * For example, in Windows you can static cast it to an HWND.
   */
  [noscript] readonly attribute voidPtr windowHandle;

  /**
   * Returns the access node cached by this document
   * @param aUniqueID The unique ID used to cache the node.
   *                  This matches up with the uniqueID attribute on
   *                  nsIAccessNode.
   * @return The nsIAccessNode cached for this particular unique ID.
   */
  [noscript] nsIAccessNode getCachedAccessNode(in voidPtr aUniqueID);

  /**
   * Returns the first accessible parent of a DOM node.
   * Guaranteed not to return nsnull if the DOM node is in a document.
   * @param aDOMNode The DOM node we need an accessible for.
   * @param aCanCreate Can accessibles be created or must it be the first 
   *                   cached accessible in the parent chain?
   * @return An first nsIAccessible found by crawling up the DOM node
   *         to the document root.
   */
  nsIAccessible getAccessibleInParentChain(in nsIDOMNode aDOMNode,
                                           in boolean aCanCreate);
};