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117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 nsGenConImageContent.
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*
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* The Initial Developer of the Original Code is the Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* L. David Baron <dbaron@dbaron.org> (original author)
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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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/**
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* A fake content node class so that the image frame for
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* content: url(foo);
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* in CSS can have an nsIImageLoadingContent but use an
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* imgIRequest that's already been loaded from the style system.
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*/
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#include "nsContentCreatorFunctions.h"
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#include "nsXMLElement.h"
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#include "nsImageLoadingContent.h"
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#include "imgIRequest.h"
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#include "nsIEventStateManager.h"
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class nsGenConImageContent : public nsXMLElement,
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public nsImageLoadingContent
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{
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public:
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nsGenConImageContent(nsINodeInfo* aNodeInfo)
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: nsXMLElement(aNodeInfo)
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{
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}
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nsresult Init(imgIRequest* aImageRequest)
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{
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// No need to notify, since we have no frame.
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return UseAsPrimaryRequest(aImageRequest, PR_FALSE);
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}
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// nsIContent overrides
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virtual PRInt32 IntrinsicState() const;
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private:
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virtual ~nsGenConImageContent();
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public:
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NS_DECL_ISUPPORTS_INHERITED
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};
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NS_IMPL_ISUPPORTS_INHERITED3(nsGenConImageContent,
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nsXMLElement,
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nsIImageLoadingContent,
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imgIContainerObserver,
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imgIDecoderObserver)
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nsresult
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NS_NewGenConImageContent(nsIContent** aResult, nsINodeInfo* aNodeInfo,
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imgIRequest* aImageRequest)
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{
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NS_PRECONDITION(aImageRequest, "Must have request!");
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nsGenConImageContent *it = new nsGenConImageContent(aNodeInfo);
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if (!it)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(*aResult = it);
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nsresult rv = it->Init(aImageRequest);
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if (NS_FAILED(rv))
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NS_RELEASE(*aResult);
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return rv;
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}
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nsGenConImageContent::~nsGenConImageContent()
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{
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DestroyImageLoadingContent();
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}
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PRInt32
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nsGenConImageContent::IntrinsicState() const
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{
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PRInt32 state = nsXMLElement::IntrinsicState();
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PRInt32 imageState = nsImageLoadingContent::ImageState();
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if (imageState & NS_EVENT_STATE_BROKEN) {
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// We should never be in an error state; if the image fails to load, we
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// just go to the suppressed state.
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imageState |= NS_EVENT_STATE_SUPPRESSED;
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imageState &= ~NS_EVENT_STATE_BROKEN;
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}
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imageState &= ~NS_EVENT_STATE_LOADING;
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return state | imageState;
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}
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