3fb16da57b
git-svn-id: svn://10.0.0.236/branches/MOZILLA_0_9_2_BRANCH@98656 18797224-902f-48f8-a5cc-f745e15eee43
152 lines
4.1 KiB
C++
152 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Author: Aaron Leventhal (aaronl@netscape.com)
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* Contributor(s):
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*/
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#include "nsGenericAccessible.h"
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#include "nsHTMLImageAccessible.h"
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#include "nsReadableUtils.h"
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#include "nsAccessible.h"
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#include "nsIHTMLDocument.h"
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#include "nsIDocument.h"
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#include "nsIDOMHTMLCollection.h"
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#include "nsIAccessibilityService.h"
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#include "nsIServiceManager.h"
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// --- image -----
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nsHTMLImageAccessible::nsHTMLImageAccessible(nsIDOMNode* aDOMNode, nsIImageFrame *aImageFrame, nsIWeakReference* aShell):
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nsLinkableAccessible(aDOMNode, aShell)
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{
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nsCOMPtr<nsIDOMElement> element(do_QueryInterface(aDOMNode));
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nsCOMPtr<nsIDocument> doc;
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nsCOMPtr<nsIPresShell> shell(do_QueryReferent(mPresShell));
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NS_ASSERTION(shell,"Shell is gone!!! What are we doing here?");
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shell->GetDocument(getter_AddRefs(doc));
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nsAutoString mapElementName;
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if (doc && element) {
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nsCOMPtr<nsIHTMLDocument> htmlDoc(do_QueryInterface(doc));
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element->GetAttribute(NS_LITERAL_STRING("usemap"),mapElementName);
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if (htmlDoc && !mapElementName.IsEmpty()) {
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if (mapElementName.CharAt(0) == '#')
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mapElementName.Cut(0,1);
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htmlDoc->GetImageMap(mapElementName, getter_AddRefs(mMapElement));
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}
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}
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}
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/* wstring getAccName (); */
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NS_IMETHODIMP nsHTMLImageAccessible::GetAccName(nsAWritableString& _retval)
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{
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nsresult rv = NS_ERROR_FAILURE;
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nsCOMPtr<nsIContent> imageContent(do_QueryInterface(mDOMNode));
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if (imageContent) {
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nsAutoString name;
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rv = AppendFlatStringFromContentNode(imageContent, &name);
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if (NS_SUCCEEDED(rv)) {
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// Temp var needed until CompressWhitespace built for nsAWritableString
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name.CompressWhitespace();
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_retval.Assign(name);
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}
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}
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return rv;
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}
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/* wstring getAccRole (); */
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NS_IMETHODIMP nsHTMLImageAccessible::GetAccRole(PRUint32 *_retval)
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{
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*_retval = ROLE_GRAPHIC;
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return NS_OK;
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}
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nsIAccessible *nsHTMLImageAccessible::CreateAreaAccessible(PRUint32 areaNum)
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{
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if (!mMapElement)
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return nsnull;
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if (areaNum == -1) {
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PRInt32 numAreaMaps;
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GetAccChildCount(&numAreaMaps);
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if (numAreaMaps<=0)
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return nsnull;
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areaNum = NS_STATIC_CAST(PRUint32,numAreaMaps-1);
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}
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nsIDOMHTMLCollection *mapAreas;
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mMapElement->GetAreas(&mapAreas);
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if (!mapAreas)
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return nsnull;
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nsIDOMNode *domNode = nsnull;
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mapAreas->Item(areaNum,&domNode);
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if (!domNode)
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return nsnull;
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nsCOMPtr<nsIAccessibilityService> accService(do_GetService("@mozilla.org/accessibilityService;1"));
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if (!accService)
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return nsnull;
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if (accService) {
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nsIAccessible* acc = nsnull;
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accService->CreateHTMLAreaAccessible(mPresShell, domNode, this, &acc);
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return acc;
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}
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return nsnull;
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}
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/* nsIAccessible getAccFirstChild (); */
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NS_IMETHODIMP nsHTMLImageAccessible::GetAccFirstChild(nsIAccessible **_retval)
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{
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*_retval = CreateAreaAccessible(0);
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return NS_OK;
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}
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/* nsIAccessible getAccLastChild (); */
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NS_IMETHODIMP nsHTMLImageAccessible::GetAccLastChild(nsIAccessible **_retval)
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{
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*_retval = CreateAreaAccessible(-1);
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return NS_OK;
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}
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/* long getAccChildCount (); */
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NS_IMETHODIMP nsHTMLImageAccessible::GetAccChildCount(PRInt32 *_retval)
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{
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*_retval = 0;
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if (mMapElement) {
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nsIDOMHTMLCollection *mapAreas;
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mMapElement->GetAreas(&mapAreas);
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if (mapAreas) {
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PRUint32 length;
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mapAreas->GetLength(&length);
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*_retval = NS_STATIC_CAST(PRInt32, length);
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}
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}
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return NS_OK;
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}
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