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lightning-sunbird  0.9+nobinonly
nsGenConImageContent.cpp
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00001 
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is nsGenConImageContent.
00016  *
00017  * The Initial Developer of the Original Code is the Mozilla Foundation.
00018  * Portions created by the Initial Developer are Copyright (C) 2004
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *   L. David Baron <dbaron@dbaron.org> (original author)
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 #include "nsContentCreatorFunctions.h"
00038 #include "nsXMLElement.h"
00039 #include "nsImageLoadingContent.h"
00040 #include "imgIRequest.h"
00041 
00048 class nsGenConImageContent : public nsXMLElement,
00049                              public nsImageLoadingContent
00050 {
00051 public:
00052   nsGenConImageContent(nsINodeInfo* aNodeInfo)
00053     : nsXMLElement(aNodeInfo)
00054   {
00055   }
00056 
00057   nsresult Init(imgIRequest* aImageRequest)
00058   {
00059     PreserveLoadHandlers();
00060     nsresult rv = aImageRequest->Clone(this, getter_AddRefs(mCurrentRequest));
00061     if (NS_FAILED(rv))
00062       UnpreserveLoadHandlers();
00063     return rv;
00064   }
00065 private:
00066   virtual ~nsGenConImageContent();
00067 
00068 public:
00069   NS_DECL_ISUPPORTS_INHERITED
00070 };
00071 
00072 NS_IMPL_ISUPPORTS_INHERITED3(nsGenConImageContent, nsXMLElement,
00073                              nsIImageLoadingContent,
00074                              imgIDecoderObserver,
00075                              imgIDecoderObserver_MOZILLA_1_8_BRANCH)
00076 
00077 nsresult
00078 NS_NewGenConImageContent(nsIContent** aResult, nsINodeInfo* aNodeInfo,
00079                          imgIRequest* aImageRequest)
00080 {
00081   nsGenConImageContent *it = new nsGenConImageContent(aNodeInfo);
00082   if (!it)
00083     return NS_ERROR_OUT_OF_MEMORY;
00084   NS_ADDREF(*aResult = it);
00085   nsresult rv = it->Init(aImageRequest);
00086   if (NS_FAILED(rv))
00087     NS_RELEASE(*aResult);
00088   return rv;
00089 }
00090 
00091 nsGenConImageContent::~nsGenConImageContent()
00092 {
00093   DestroyImageLoadingContent();
00094 }