Thu, 17 May 2007 20:49:14 -0700
changeset 1585 633138510b5ae5e25a3bfe66d2db572dc361d448
parent 262 3ac8184e6eaf19f0adecdb90015a7494c216e92f
child 2089 3f5a8379e104e8e14850b9cce8244b77c94a0b00
permissions -rw-r--r--
Move nsIDocShellTreeItem::childOffset to nsDocShell and remove all uses except internally by nsDocShell (it should be removed eventually). b=376562 r=Olli.Pettay sr=bzbarsky

/* -*- 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
 * 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 code.
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Author: Aaron Leventhal (
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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 "imgIContainer.h"
#include "imgIRequest.h"
#include "nsHTMLImageAccessible.h"
#include "nsAccessibilityAtoms.h"
#include "nsIAccessibilityService.h"
#include "nsIDOMHTMLCollection.h"
#include "nsIDocument.h"
#include "nsIHTMLDocument.h"
#include "nsIImageLoadingContent.h"
#include "nsIPresShell.h"
#include "nsIServiceManager.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsIDOMDocument.h"
#include "nsPIDOMWindow.h"

// --- image -----

nsHTMLImageAccessible::nsHTMLImageAccessible(nsIDOMNode* aDOMNode, nsIWeakReference* aShell):
nsLinkableAccessible(aDOMNode, aShell)
  nsCOMPtr<nsIDOMElement> element(do_QueryInterface(aDOMNode));
  nsCOMPtr<nsIPresShell> shell(do_QueryReferent(mWeakShell));
  if (!shell)

  nsIDocument *doc = shell->GetDocument();
  nsAutoString mapElementName;

  if (doc && element) {
    nsCOMPtr<nsIHTMLDocument> htmlDoc(do_QueryInterface(doc));
    if (htmlDoc && !mapElementName.IsEmpty()) {
      if (mapElementName.CharAt(0) == '#')
      mMapElement = htmlDoc->GetImageMap(mapElementName);

NS_IMPL_ISUPPORTS_INHERITED1(nsHTMLImageAccessible, nsLinkableAccessible, nsIAccessibleImage)

nsHTMLImageAccessible::GetState(PRUint32 *aState, PRUint32 *aExtraState)
  // The state is a bitfield, get our inherited state, then logically OR it with
  // STATE_ANIMATED if this is an animated image.

  nsresult rv = nsLinkableAccessible::GetState(aState, aExtraState);

  nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(mDOMNode));
  nsCOMPtr<imgIRequest> imageRequest;

  if (content)

  nsCOMPtr<imgIContainer> imgContainer;
  if (imageRequest)

  if (imgContainer) {
    PRUint32 numFrames;
    if (numFrames > 1)
      *aState |= nsIAccessibleStates::STATE_ANIMATED;

  return NS_OK;

/* wstring getName (); */
NS_IMETHODIMP nsHTMLImageAccessible::GetName(nsAString& aName)
  nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
  if (!content) {
    return NS_ERROR_FAILURE;  // Node has been shut down

  if (!content->GetAttr(kNameSpaceID_None, nsAccessibilityAtoms::alt,
                        aName)) {
    if (mRoleMapEntry) {
      // Use HTML label or DHTML accessibility's labelledby attribute for name
      // GetHTMLName will also try title attribute as a last resort
      return GetHTMLName(aName, PR_FALSE);
    if (!content->GetAttr(kNameSpaceID_None, nsAccessibilityAtoms::title,
                          aName)) {
      aName.SetIsVoid(PR_TRUE); // No alt or title

  return NS_OK;

/* wstring getRole (); */
NS_IMETHODIMP nsHTMLImageAccessible::GetRole(PRUint32 *_retval)
  *_retval = nsIAccessibleRole::ROLE_GRAPHIC;
  return NS_OK;

already_AddRefed<nsIAccessible> nsHTMLImageAccessible::CreateAreaAccessible(PRInt32 areaNum)
  if (!mMapElement) 
    return nsnull;

  nsCOMPtr<nsIDOMHTMLCollection> mapAreas;
  if (!mapAreas) 
    return nsnull;

  nsCOMPtr<nsIDOMNode> domNode;
  if (!domNode)
    return nsnull;

  nsCOMPtr<nsIAccessibilityService> accService(do_GetService(";1"));
  if (!accService)
    return nsnull;
  if (accService) {
    nsIAccessible* acc = nsnull;
    accService->GetCachedAccessible(domNode, mWeakShell, &acc);
    if (!acc) {
      accService->CreateHTMLAreaAccessible(mWeakShell, domNode, this, &acc);
      nsCOMPtr<nsPIAccessNode> accessNode(do_QueryInterface(acc));
      if (accessNode) {
    return acc;
  return nsnull;

void nsHTMLImageAccessible::CacheChildren()
  if (!mWeakShell) {
    // This node has been shut down
    mAccChildCount = eChildCountUninitialized;

  if (mAccChildCount != eChildCountUninitialized) {

  nsCOMPtr<nsIDOMHTMLCollection> mapAreas;
  if (mMapElement) {
  if (!mapAreas) {
    mAccChildCount = 0;

  PRUint32 numMapAreas;
  PRInt32 childCount = 0;
  nsCOMPtr<nsIAccessible> areaAccessible;
  nsCOMPtr<nsPIAccessible> privatePrevAccessible;
  while (childCount < (PRInt32)numMapAreas && 
         (areaAccessible = CreateAreaAccessible(childCount)) != nsnull) {
    if (privatePrevAccessible) {
    else {

    ++ childCount;

    privatePrevAccessible = do_QueryInterface(areaAccessible);
    NS_ASSERTION(privatePrevAccessible, "nsIAccessible impl's should always support nsPIAccessible as well");
  mAccChildCount = childCount;

NS_IMETHODIMP nsHTMLImageAccessible::DoAction(PRUint8 index)
  if (index == eAction_ShowLongDescription) {
    //get the long description uri and open in a new window
    nsCOMPtr<nsIDOMHTMLImageElement> element(do_QueryInterface(mDOMNode));
    nsAutoString longDesc;
    nsresult rv = element->GetLongDesc(longDesc);
    NS_ENSURE_SUCCESS(rv, rv);
    nsCOMPtr<nsIDOMDocument> domDocument;
    rv = mDOMNode->GetOwnerDocument(getter_AddRefs(domDocument));
    NS_ENSURE_SUCCESS(rv, rv);
    nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
    nsCOMPtr<nsPIDOMWindow> piWindow = document->GetWindow();
    nsCOMPtr<nsIDOMWindowInternal> win(do_QueryInterface(piWindow));
    nsCOMPtr<nsIDOMWindow> tmp;
    return win->Open(longDesc, NS_LITERAL_STRING(""), NS_LITERAL_STRING(""),
  return nsLinkableAccessible::DoAction(index);

NS_IMETHODIMP nsHTMLImageAccessible::GetImageBounds(PRInt32 *x, PRInt32 *y, PRInt32 *width, PRInt32 *height)
  return GetBounds(x, y, width, height);