108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
/* -*- 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: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsCOMPtr.h"
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#include "nsIDocument.h"
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#include "nsIHTMLDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMHTMLMapElement.h"
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#include "nsImageMapUtils.h"
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/*static*/
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already_AddRefed<nsIDOMHTMLMapElement>
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nsImageMapUtils::FindImageMap(nsIDocument *aDocument,
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const nsAString &aUsemap)
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{
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if (!aDocument)
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return nsnull;
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// We used to strip the whitespace from the usemap value as a Quirk,
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// but it was too quirky and didn't really work correctly - see bug
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// 87050
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if (aUsemap.IsEmpty())
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return nsnull;
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nsAString::const_iterator start, end;
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aUsemap.BeginReading(start);
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aUsemap.EndReading(end);
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PRInt32 hash = aUsemap.FindChar('#');
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if (hash > -1) {
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// aUsemap contains a '#', set start to point right after the '#'
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start.advance(hash + 1);
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if (start == end) {
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return nsnull; // aUsemap == "#"
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}
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}
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const nsAString& usemap = Substring(start, end);
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nsCOMPtr<nsIHTMLDocument> htmlDoc(do_QueryInterface(aDocument));
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if (htmlDoc) {
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nsIDOMHTMLMapElement* map = htmlDoc->GetImageMap(usemap);
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NS_IF_ADDREF(map);
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return map;
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} else {
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// For XHTML elements embedded in non-XHTML documents we get the
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// map by id since XHTML requires that where a "name" attribute
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// was used in HTML 4.01, the "id" attribute must be used in
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// XHTML. The attribute "name" is officially deprecated. This
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// simplifies our life becase we can simply get the map with
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// getElementById().
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nsCOMPtr<nsIDOMDocument> domDoc(do_QueryInterface(aDocument));
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if (domDoc) {
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nsCOMPtr<nsIDOMElement> element;
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domDoc->GetElementById(usemap, getter_AddRefs(element));
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if (element) {
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nsIDOMHTMLMapElement* map;
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CallQueryInterface(element, &map);
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return map;
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}
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}
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}
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return nsnull;
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}
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