f6388a263a
Thanks to Roland Mainz <Roland.Mainz@informatik.med.uni-giessen.de> for the patch. r=cls sr=dmose git-svn-id: svn://10.0.0.236/trunk@136659 18797224-902f-48f8-a5cc-f745e15eee43
117 lines
4.1 KiB
C++
117 lines
4.1 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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nsresult nsImageMapUtils::FindImageMap(nsIDocument *aDocument,
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const nsAString &aUsemap,
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nsIDOMHTMLMapElement **aMap)
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{
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NS_ENSURE_ARG_POINTER(aDocument);
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NS_ENSURE_ARG_POINTER(aMap);
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*aMap = nsnull;
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/* we used to strip the whitespace from the usemap value as a Quirk, but it was too quirky and
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didn't really work correctly - see bug 87050
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*/
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if (aUsemap.IsEmpty())
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return NS_OK;
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PRInt32 hash = aUsemap.FindChar('#');
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nsAString::const_iterator start, end;
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if (hash > -1) {
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aUsemap.BeginReading(start);
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aUsemap.EndReading(end);
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start.advance(hash + 1);
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if (start == end)
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return NS_OK; // aUsemap == "#"
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}
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// At this point, if hash < 0, then there was no '#'
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// so aUsemap IS the ref. Otherwise the ref starts
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// from 'start'
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// NOTE!
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// I'd really like to do this, but it won't compile, and casting
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// Substring return to (const nsAString&) will cause a runtime crash.
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// Therefore, to avoid doing needless work, this pattern is replicated
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// below where we actually call functions with 'usemap' values.
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//const nsAString &usemap = (hash < 0) ? aUsemap : Substring(start, end);
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nsCOMPtr<nsIHTMLDocument> htmlDoc(do_QueryInterface(aDocument));
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if (htmlDoc) {
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// See above NOTE
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if (hash < 0) {
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htmlDoc->GetImageMap(aUsemap, aMap);
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} else {
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htmlDoc->GetImageMap(Substring(start, end), aMap);
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}
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} else {
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// XHTML requires that where a name attribute was used in HTML 4.01,
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// the ID attribute must be used in XHTML. name is officially deprecated.
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// This 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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// See above NOTE
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if (hash < 0) {
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domDoc->GetElementById(aUsemap, getter_AddRefs(element));
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} else {
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domDoc->GetElementById(Substring(start, end), getter_AddRefs(element));
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}
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if (element) {
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CallQueryInterface(element, aMap);
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}
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}
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}
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return NS_OK;
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}
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