2003-03-19 01:08:22 +00:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2004-05-13 18:34:18 +00:00
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// vim: ft=cpp tw=78 sw=2 et ts=2
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2003-03-19 01:08:22 +00:00
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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
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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/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 mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Boris Zbarsky <bzbarsky@mit.edu>.
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* Portions created by the Initial Developer are Copyright (C) 2003
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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 "nsImageLoadingContent.h"
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#include "nsContentErrors.h"
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#include "nsIContent.h"
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#include "nsIDocument.h"
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#include "nsINodeInfo.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsIDOMWindow.h"
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2004-11-24 22:48:45 +00:00
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#include "nsServiceManagerUtils.h"
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2003-03-19 01:08:22 +00:00
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#include "nsContentPolicyUtils.h"
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#include "nsIURI.h"
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#include "nsILoadGroup.h"
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#include "imgIContainer.h"
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#include "gfxIImageFrame.h"
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#include "imgILoader.h"
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#include "plevent.h"
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#include "nsIEventQueueService.h"
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#include "nsIEventQueue.h"
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#include "nsNetUtil.h"
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2004-07-31 23:15:21 +00:00
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#include "nsPresContext.h"
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2003-03-19 05:38:33 +00:00
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#include "nsIPresShell.h"
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2005-09-18 18:05:40 +00:00
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#include "nsIEventStateManager.h"
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2003-03-19 05:38:33 +00:00
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#include "nsGUIEvent.h"
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2003-03-19 01:08:22 +00:00
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2003-04-02 03:27:20 +00:00
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#include "nsIChannel.h"
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#include "nsIStreamListener.h"
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2003-04-16 01:53:48 +00:00
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#include "nsLayoutAtoms.h"
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#include "nsIFrame.h"
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2004-05-13 18:34:18 +00:00
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#include "nsIDOMNode.h"
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2003-04-16 01:53:48 +00:00
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2004-03-09 03:57:51 +00:00
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#include "nsContentUtils.h"
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2005-03-02 04:05:12 +00:00
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#include "nsIContentPolicy.h"
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#include "nsContentPolicyUtils.h"
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2004-03-09 03:57:51 +00:00
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2004-06-05 17:57:00 +00:00
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#ifdef DEBUG_chb
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static void PrintReqURL(imgIRequest* req) {
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if (!req) {
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printf("(null req)\n");
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return;
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}
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nsCOMPtr<nsIURI> uri;
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req->GetURI(getter_AddRefs(uri));
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if (!uri) {
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printf("(null uri)\n");
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return;
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}
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nsCAutoString spec;
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uri->GetSpec(spec);
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printf("spec='%s'\n", spec.get());
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}
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#endif /* DEBUG_chb */
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2004-05-13 18:34:18 +00:00
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2003-03-19 01:08:22 +00:00
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nsImageLoadingContent::nsImageLoadingContent()
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: mObserverList(nsnull),
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2005-03-02 04:05:12 +00:00
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mImageBlockingStatus(nsIContentPolicy::ACCEPT),
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2005-09-18 18:05:40 +00:00
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mLoadingEnabled(PR_TRUE),
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2005-09-18 21:06:19 +00:00
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mStartingLoad(PR_FALSE),
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2005-09-18 18:05:40 +00:00
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// mBroken starts out true, since an image without a URI is broken....
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mBroken(PR_TRUE),
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mUserDisabled(PR_FALSE),
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mSuppressed(PR_FALSE)
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2003-03-19 01:08:22 +00:00
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{
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2005-02-03 17:23:35 +00:00
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if (!nsContentUtils::GetImgLoader())
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2003-05-02 19:21:00 +00:00
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mLoadingEnabled = PR_FALSE;
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2003-03-19 01:08:22 +00:00
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}
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nsImageLoadingContent::~nsImageLoadingContent()
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{
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// Cancel our requests so they won't hold stale refs to us
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if (mCurrentRequest) {
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mCurrentRequest->Cancel(NS_ERROR_FAILURE);
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}
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if (mPendingRequest) {
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mPendingRequest->Cancel(NS_ERROR_FAILURE);
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}
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NS_ASSERTION(!mObserverList.mObserver && !mObserverList.mNext,
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"Observers still registered?");
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}
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// Macro to call some func on each observer. This handles observers
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// removing themselves.
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#define LOOP_OVER_OBSERVERS(func_) \
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PR_BEGIN_MACRO \
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2003-07-23 23:09:33 +00:00
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for (ImageObserver* observer = &mObserverList, *next; observer; \
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observer = next) { \
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next = observer->mNext; \
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2003-03-19 01:08:22 +00:00
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if (observer->mObserver) { \
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observer->mObserver->func_; \
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} \
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} \
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PR_END_MACRO
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/*
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* imgIContainerObserver impl
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*/
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NS_IMETHODIMP
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nsImageLoadingContent::FrameChanged(imgIContainer* aContainer,
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gfxIImageFrame* aFrame,
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nsRect* aDirtyRect)
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{
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LOOP_OVER_OBSERVERS(FrameChanged(aContainer, aFrame, aDirtyRect));
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return NS_OK;
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}
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/*
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* imgIDecoderObserver impl
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*/
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NS_IMETHODIMP
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nsImageLoadingContent::OnStartDecode(imgIRequest* aRequest)
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{
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LOOP_OVER_OBSERVERS(OnStartDecode(aRequest));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::OnStartContainer(imgIRequest* aRequest,
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imgIContainer* aContainer)
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{
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LOOP_OVER_OBSERVERS(OnStartContainer(aRequest, aContainer));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::OnStartFrame(imgIRequest* aRequest,
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gfxIImageFrame* aFrame)
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{
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LOOP_OVER_OBSERVERS(OnStartFrame(aRequest, aFrame));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::OnDataAvailable(imgIRequest* aRequest,
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gfxIImageFrame* aFrame,
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const nsRect* aRect)
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{
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LOOP_OVER_OBSERVERS(OnDataAvailable(aRequest, aFrame, aRect));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::OnStopFrame(imgIRequest* aRequest,
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gfxIImageFrame* aFrame)
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{
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LOOP_OVER_OBSERVERS(OnStopFrame(aRequest, aFrame));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::OnStopContainer(imgIRequest* aRequest,
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imgIContainer* aContainer)
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{
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LOOP_OVER_OBSERVERS(OnStopContainer(aRequest, aContainer));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::OnStopDecode(imgIRequest* aRequest,
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nsresult aStatus,
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const PRUnichar* aStatusArg)
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{
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NS_PRECONDITION(aRequest == mCurrentRequest || aRequest == mPendingRequest,
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"Unknown request");
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LOOP_OVER_OBSERVERS(OnStopDecode(aRequest, aStatus, aStatusArg));
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if (aRequest == mPendingRequest) {
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mCurrentRequest->Cancel(NS_ERROR_IMAGE_SRC_CHANGED);
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mCurrentRequest = mPendingRequest;
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mPendingRequest = nsnull;
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}
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if (NS_SUCCEEDED(aStatus)) {
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FireEvent(NS_LITERAL_STRING("load"));
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} else {
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FireEvent(NS_LITERAL_STRING("error"));
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}
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2005-09-18 18:05:40 +00:00
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// Have to check for state changes here (for example, the new load could
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// have resulted in a broken image). Note that we don't want to do this
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// async, unlike the event, because while this is waiting to happen our
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// state could change yet again, and then we'll get confused about our
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// state.
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UpdateImageState(PR_TRUE);
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2003-03-19 01:08:22 +00:00
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return NS_OK;
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}
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/*
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2003-04-02 03:27:20 +00:00
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* nsIImageLoadingContent impl
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2003-03-19 01:08:22 +00:00
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*/
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NS_IMETHODIMP
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nsImageLoadingContent::GetLoadingEnabled(PRBool *aLoadingEnabled)
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{
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*aLoadingEnabled = mLoadingEnabled;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::SetLoadingEnabled(PRBool aLoadingEnabled)
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{
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2005-02-03 17:23:35 +00:00
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if (nsContentUtils::GetImgLoader())
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2003-05-02 19:21:00 +00:00
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mLoadingEnabled = aLoadingEnabled;
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2003-03-19 01:08:22 +00:00
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return NS_OK;
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}
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NS_IMETHODIMP
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2005-03-02 04:05:12 +00:00
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nsImageLoadingContent::GetImageBlockingStatus(PRInt16* aStatus)
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2003-03-19 01:08:22 +00:00
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{
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2005-03-02 04:05:12 +00:00
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NS_PRECONDITION(aStatus, "Null out param");
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*aStatus = mImageBlockingStatus;
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2003-03-19 01:08:22 +00:00
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return NS_OK;
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}
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2003-07-24 17:30:52 +00:00
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2003-03-19 01:08:22 +00:00
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NS_IMETHODIMP
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nsImageLoadingContent::AddObserver(imgIDecoderObserver* aObserver)
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{
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NS_ENSURE_ARG_POINTER(aObserver);
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if (!mObserverList.mObserver) {
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mObserverList.mObserver = aObserver;
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// Don't touch the linking of the list!
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return NS_OK;
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}
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// otherwise we have to create a new entry
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ImageObserver* observer = &mObserverList;
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while (observer->mNext) {
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observer = observer->mNext;
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}
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observer->mNext = new ImageObserver(aObserver);
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if (! observer->mNext) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::RemoveObserver(imgIDecoderObserver* aObserver)
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{
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NS_ENSURE_ARG_POINTER(aObserver);
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if (mObserverList.mObserver == aObserver) {
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mObserverList.mObserver = nsnull;
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// Don't touch the linking of the list!
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return NS_OK;
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}
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// otherwise have to find it and splice it out
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ImageObserver* observer = &mObserverList;
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while (observer->mNext && observer->mNext->mObserver != aObserver) {
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observer = observer->mNext;
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}
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// At this point, we are pointing to the list element whose mNext is
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// the right observer (assuming of course that mNext is not null)
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if (observer->mNext) {
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// splice it out
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ImageObserver* oldObserver = observer->mNext;
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observer->mNext = oldObserver->mNext;
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oldObserver->mNext = nsnull; // so we don't destroy them all
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delete oldObserver;
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}
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#ifdef DEBUG
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else {
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NS_WARNING("Asked to remove non-existent observer");
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}
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#endif
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return NS_OK;
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}
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NS_IMETHODIMP
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2003-03-19 04:13:37 +00:00
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nsImageLoadingContent::GetRequest(PRInt32 aRequestType,
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2003-03-19 01:08:22 +00:00
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imgIRequest** aRequest)
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{
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switch(aRequestType) {
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case CURRENT_REQUEST:
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*aRequest = mCurrentRequest;
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break;
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case PENDING_REQUEST:
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*aRequest = mPendingRequest;
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break;
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default:
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NS_ERROR("Unknown request type");
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*aRequest = nsnull;
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return NS_ERROR_UNEXPECTED;
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}
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NS_IF_ADDREF(*aRequest);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsImageLoadingContent::GetRequestType(imgIRequest* aRequest,
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PRInt32* aRequestType)
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{
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NS_PRECONDITION(aRequestType, "Null out param");
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if (aRequest == mCurrentRequest) {
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*aRequestType = CURRENT_REQUEST;
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return NS_OK;
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}
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if (aRequest == mPendingRequest) {
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*aRequestType = PENDING_REQUEST;
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return NS_OK;
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}
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|
|
*aRequestType = UNKNOWN_REQUEST;
|
|
|
|
NS_ERROR("Unknown request");
|
|
|
|
return NS_ERROR_UNEXPECTED;
|
|
|
|
}
|
|
|
|
|
2004-06-05 17:57:00 +00:00
|
|
|
NS_IMETHODIMP
|
|
|
|
nsImageLoadingContent::GetCurrentURI(nsIURI** aURI)
|
|
|
|
{
|
|
|
|
if (mCurrentRequest)
|
|
|
|
return mCurrentRequest->GetURI(aURI);
|
|
|
|
|
2004-09-14 15:06:56 +00:00
|
|
|
NS_IF_ADDREF(*aURI = mCurrentURI);
|
2004-06-05 17:57:00 +00:00
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
2003-04-02 03:27:20 +00:00
|
|
|
NS_IMETHODIMP
|
|
|
|
nsImageLoadingContent::LoadImageWithChannel(nsIChannel* aChannel,
|
|
|
|
nsIStreamListener** aListener)
|
|
|
|
{
|
|
|
|
NS_PRECONDITION(aListener, "null out param");
|
|
|
|
|
|
|
|
NS_ENSURE_ARG_POINTER(aChannel);
|
|
|
|
|
2005-02-03 17:23:35 +00:00
|
|
|
if (!nsContentUtils::GetImgLoader())
|
2003-05-02 19:21:00 +00:00
|
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
|
2003-04-02 03:27:20 +00:00
|
|
|
// XXX what should we do with content policies here, if anything?
|
|
|
|
// Shouldn't that be done before the start of the load?
|
|
|
|
|
2003-07-28 21:09:56 +00:00
|
|
|
nsCOMPtr<nsIDocument> doc = GetOurDocument();
|
|
|
|
if (!doc) {
|
|
|
|
// Don't bother
|
|
|
|
return NS_OK;
|
|
|
|
}
|
2005-08-19 14:55:07 +00:00
|
|
|
|
|
|
|
// Null out our mCurrentURI, in case we have no image requests right now.
|
|
|
|
mCurrentURI = nsnull;
|
2003-07-28 21:09:56 +00:00
|
|
|
|
2005-03-02 04:05:12 +00:00
|
|
|
CancelImageRequests(NS_ERROR_IMAGE_SRC_CHANGED, PR_FALSE,
|
|
|
|
nsIContentPolicy::ACCEPT);
|
2003-04-02 03:27:20 +00:00
|
|
|
|
|
|
|
nsCOMPtr<imgIRequest> & req = mCurrentRequest ? mPendingRequest : mCurrentRequest;
|
|
|
|
|
2005-09-18 18:05:40 +00:00
|
|
|
nsresult rv = nsContentUtils::GetImgLoader()->
|
|
|
|
LoadImageWithChannel(aChannel, this, doc, aListener, getter_AddRefs(req));
|
|
|
|
|
|
|
|
// Make sure our state is up to date
|
|
|
|
UpdateImageState(PR_TRUE);
|
|
|
|
|
|
|
|
return rv;
|
2003-04-02 03:27:20 +00:00
|
|
|
}
|
|
|
|
|
2003-03-19 01:08:22 +00:00
|
|
|
// XXX This should be a protected method, not an interface method!!!
|
|
|
|
NS_IMETHODIMP
|
|
|
|
nsImageLoadingContent::ImageURIChanged(const nsAString& aNewURI) {
|
2005-09-18 18:05:40 +00:00
|
|
|
return ImageURIChanged(aNewURI, PR_TRUE, PR_FALSE);
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Non-interface methods
|
|
|
|
*/
|
2005-09-18 18:05:40 +00:00
|
|
|
|
2003-03-19 01:08:22 +00:00
|
|
|
nsresult
|
2005-04-06 02:55:02 +00:00
|
|
|
nsImageLoadingContent::ImageURIChanged(const nsAString& aNewURI,
|
2005-09-18 18:05:40 +00:00
|
|
|
PRBool aForce,
|
|
|
|
PRBool aNotify)
|
2003-03-19 01:08:22 +00:00
|
|
|
{
|
|
|
|
if (!mLoadingEnabled) {
|
2005-08-17 23:01:09 +00:00
|
|
|
FireEvent(NS_LITERAL_STRING("error"));
|
2003-03-19 01:08:22 +00:00
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
2003-07-03 02:45:34 +00:00
|
|
|
// First, get a document (needed for security checks and the like)
|
2003-07-28 21:09:56 +00:00
|
|
|
nsCOMPtr<nsIDocument> doc = GetOurDocument();
|
2003-04-15 01:09:09 +00:00
|
|
|
if (!doc) {
|
|
|
|
// No reason to bother, I think...
|
2003-07-28 21:09:56 +00:00
|
|
|
return NS_OK;
|
2003-04-15 01:09:09 +00:00
|
|
|
}
|
2003-03-19 01:08:22 +00:00
|
|
|
|
2003-07-28 21:09:56 +00:00
|
|
|
nsresult rv; // XXXbz Should failures in this method fire onerror?
|
|
|
|
|
2003-03-19 01:08:22 +00:00
|
|
|
nsCOMPtr<nsIURI> imageURI;
|
|
|
|
rv = StringToURI(aNewURI, doc, getter_AddRefs(imageURI));
|
|
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
|
2005-04-11 16:37:27 +00:00
|
|
|
// Skip the URI equality check if our current image was blocked. If
|
|
|
|
// that happened, we really do want to try loading again.
|
|
|
|
if (!aForce && NS_CP_ACCEPTED(mImageBlockingStatus)) {
|
2005-04-06 02:55:02 +00:00
|
|
|
nsCOMPtr<nsIURI> currentURI;
|
|
|
|
GetCurrentURI(getter_AddRefs(currentURI));
|
|
|
|
PRBool equal;
|
|
|
|
if (currentURI &&
|
|
|
|
NS_SUCCEEDED(currentURI->Equals(imageURI, &equal)) &&
|
|
|
|
equal) {
|
|
|
|
// Nothing to do here.
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-09-18 18:05:40 +00:00
|
|
|
// From this point on, our state could change before return, so make
|
|
|
|
// sure to notify if it does.
|
|
|
|
AutoStateChanger changer(this, aNotify);
|
|
|
|
|
2003-03-19 01:08:22 +00:00
|
|
|
// If we'll be loading a new image, we want to cancel our existing
|
|
|
|
// requests; the question is what reason to pass in. If everything
|
|
|
|
// is going smoothly, that reason should be
|
|
|
|
// NS_ERROR_IMAGE_SRC_CHANGED so that our frame (if any) will know
|
|
|
|
// not to show the broken image icon. If the load is blocked by the
|
|
|
|
// content policy or security manager, we will want to cancel with
|
|
|
|
// the error code from those.
|
|
|
|
|
2005-03-02 04:05:12 +00:00
|
|
|
PRInt16 newImageStatus;
|
|
|
|
PRBool loadImage = nsContentUtils::CanLoadImage(imageURI, this, doc,
|
|
|
|
&newImageStatus);
|
|
|
|
NS_ASSERTION(loadImage || !NS_CP_ACCEPTED(newImageStatus),
|
|
|
|
"CanLoadImage lied");
|
2004-05-13 18:34:18 +00:00
|
|
|
|
|
|
|
nsresult cancelResult = loadImage ? NS_ERROR_IMAGE_SRC_CHANGED
|
|
|
|
: NS_ERROR_IMAGE_BLOCKED;
|
|
|
|
|
2005-03-02 04:05:12 +00:00
|
|
|
CancelImageRequests(cancelResult, PR_FALSE, newImageStatus);
|
2003-03-19 01:08:22 +00:00
|
|
|
|
2005-09-18 18:05:40 +00:00
|
|
|
// Remember the URL of this request, in case someone asks us for it later.
|
|
|
|
// But this only matters if we are affecting the current request. Need to do
|
|
|
|
// this after CancelImageRequests, since that affects the value of
|
|
|
|
// mCurrentRequest.
|
|
|
|
if (!mCurrentRequest)
|
|
|
|
mCurrentURI = imageURI;
|
|
|
|
|
2005-03-02 04:05:12 +00:00
|
|
|
if (!loadImage) {
|
2003-03-19 01:08:22 +00:00
|
|
|
// Don't actually load anything! This was blocked by CanLoadImage.
|
2005-08-17 23:01:09 +00:00
|
|
|
FireEvent(NS_LITERAL_STRING("error"));
|
2003-03-19 01:08:22 +00:00
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
nsCOMPtr<imgIRequest> & req = mCurrentRequest ? mPendingRequest : mCurrentRequest;
|
|
|
|
|
2004-07-14 21:56:23 +00:00
|
|
|
rv = nsContentUtils::LoadImage(imageURI, doc, doc->GetDocumentURI(),
|
|
|
|
this, nsIRequest::LOAD_NORMAL,
|
2004-03-09 03:57:51 +00:00
|
|
|
getter_AddRefs(req));
|
2005-08-17 23:01:09 +00:00
|
|
|
if (NS_FAILED(rv)) {
|
|
|
|
FireEvent(NS_LITERAL_STRING("error"));
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
2004-06-05 17:57:00 +00:00
|
|
|
// If we now have a current request, we don't need to store the URI, since
|
|
|
|
// we can get it off the request. Release it.
|
|
|
|
if (mCurrentRequest) {
|
|
|
|
mCurrentURI = nsnull;
|
|
|
|
}
|
2003-04-16 01:53:48 +00:00
|
|
|
|
2005-09-18 18:05:40 +00:00
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
PRInt32
|
|
|
|
nsImageLoadingContent::ImageState() const
|
|
|
|
{
|
|
|
|
return
|
|
|
|
(mBroken * NS_EVENT_STATE_BROKEN) |
|
|
|
|
(mUserDisabled * NS_EVENT_STATE_USERDISABLED) |
|
|
|
|
(mSuppressed * NS_EVENT_STATE_SUPPRESSED);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
nsImageLoadingContent::UpdateImageState(PRBool aNotify)
|
|
|
|
{
|
2005-09-18 21:06:19 +00:00
|
|
|
if (mStartingLoad) {
|
|
|
|
// Ignore this call; we'll update our state when the state changer is
|
|
|
|
// destroyed. Need this to work around the fact that some libpr0n stuff is
|
|
|
|
// actually sync and hence we can get OnStopDecode called while we're still
|
|
|
|
// under ImageURIChanged, and OnStopDecode doesn't know anything about
|
|
|
|
// aNotify
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2005-09-18 18:05:40 +00:00
|
|
|
nsCOMPtr<nsIContent> thisContent = do_QueryInterface(this);
|
|
|
|
if (!thisContent) {
|
|
|
|
return;
|
2003-04-16 01:53:48 +00:00
|
|
|
}
|
|
|
|
|
2005-09-18 18:05:40 +00:00
|
|
|
PRInt32 oldState = ImageState();
|
|
|
|
|
|
|
|
mBroken = mUserDisabled = mSuppressed = PR_FALSE;
|
|
|
|
|
|
|
|
// If we were blocked by server-based content policy, we claim to be
|
|
|
|
// suppressed. If we were blocked by type-based content policy, we claim to
|
|
|
|
// be user-disabled. Otherwise, claim to be broken.
|
|
|
|
if (mImageBlockingStatus == nsIContentPolicy::REJECT_SERVER) {
|
|
|
|
mSuppressed = PR_TRUE;
|
|
|
|
} else if (mImageBlockingStatus == nsIContentPolicy::REJECT_TYPE) {
|
|
|
|
mUserDisabled = PR_TRUE;
|
|
|
|
} else if (!mCurrentRequest) {
|
|
|
|
// No current request means error, since we weren't disabled or suppressed
|
|
|
|
mBroken = PR_TRUE;
|
|
|
|
} else {
|
|
|
|
PRUint32 currentLoadStatus;
|
|
|
|
nsresult rv = mCurrentRequest->GetImageStatus(¤tLoadStatus);
|
|
|
|
if (NS_FAILED(rv) || (currentLoadStatus & imgIRequest::STATUS_ERROR)) {
|
|
|
|
mBroken = PR_TRUE;
|
|
|
|
}
|
2003-04-16 01:53:48 +00:00
|
|
|
}
|
|
|
|
|
2005-09-18 18:05:40 +00:00
|
|
|
if (aNotify) {
|
|
|
|
nsIDocument* doc = thisContent->GetCurrentDoc();
|
|
|
|
if (doc) {
|
|
|
|
NS_ASSERTION(thisContent->IsInDoc(), "Something is confused");
|
|
|
|
PRInt32 changedBits = oldState ^ ImageState();
|
|
|
|
if (changedBits) {
|
|
|
|
mozAutoDocUpdate(doc, UPDATE_CONTENT_STATE, PR_TRUE);
|
|
|
|
doc->ContentStatesChanged(thisContent, nsnull, changedBits);
|
2003-04-16 01:53:48 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|
|
|
|
|
2005-08-19 14:55:07 +00:00
|
|
|
void
|
2005-09-18 18:05:40 +00:00
|
|
|
nsImageLoadingContent::CancelImageRequests(PRBool aNotify)
|
2005-08-19 14:55:07 +00:00
|
|
|
{
|
|
|
|
// Make sure to null out mCurrentURI here, so we no longer look like an image
|
|
|
|
mCurrentURI = nsnull;
|
|
|
|
CancelImageRequests(NS_BINDING_ABORTED, PR_TRUE, nsIContentPolicy::ACCEPT);
|
2005-09-18 21:06:19 +00:00
|
|
|
NS_ASSERTION(!mStartingLoad, "Whence a state changer here?");
|
2005-09-18 18:05:40 +00:00
|
|
|
UpdateImageState(aNotify);
|
2005-08-19 14:55:07 +00:00
|
|
|
}
|
|
|
|
|
2003-03-19 01:08:22 +00:00
|
|
|
void
|
2004-05-13 18:34:18 +00:00
|
|
|
nsImageLoadingContent::CancelImageRequests(nsresult aReason,
|
2005-03-02 04:05:12 +00:00
|
|
|
PRBool aEvenIfSizeAvailable,
|
|
|
|
PRInt16 aNewImageStatus)
|
2003-03-19 01:08:22 +00:00
|
|
|
{
|
|
|
|
// Cancel the pending request, if any
|
|
|
|
if (mPendingRequest) {
|
|
|
|
mPendingRequest->Cancel(aReason);
|
|
|
|
mPendingRequest = nsnull;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Cancel the current request if it has not progressed enough to
|
|
|
|
// have a size yet
|
|
|
|
if (mCurrentRequest) {
|
|
|
|
PRUint32 loadStatus = imgIRequest::STATUS_ERROR;
|
|
|
|
mCurrentRequest->GetImageStatus(&loadStatus);
|
2005-03-02 04:05:12 +00:00
|
|
|
|
|
|
|
NS_ASSERTION(NS_CP_ACCEPTED(mImageBlockingStatus),
|
|
|
|
"Have current request but blocked image?");
|
2003-03-19 01:08:22 +00:00
|
|
|
|
2004-05-13 18:34:18 +00:00
|
|
|
if (aEvenIfSizeAvailable ||
|
|
|
|
!(loadStatus & imgIRequest::STATUS_SIZE_AVAILABLE)) {
|
2005-03-02 04:05:12 +00:00
|
|
|
// The new image is going to become the current request. Make sure to
|
|
|
|
// set mImageBlockingStatus _before_ we cancel the request... if we set
|
|
|
|
// it after, things that are watching the mCurrentRequest will get wrong
|
|
|
|
// data.
|
|
|
|
mImageBlockingStatus = aNewImageStatus;
|
2003-03-19 01:08:22 +00:00
|
|
|
mCurrentRequest->Cancel(aReason);
|
|
|
|
mCurrentRequest = nsnull;
|
|
|
|
}
|
2005-03-02 04:05:12 +00:00
|
|
|
} else {
|
|
|
|
// No current request so the new image status will become the
|
|
|
|
// status of the current request
|
|
|
|
mImageBlockingStatus = aNewImageStatus;
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|
2005-03-02 04:05:12 +00:00
|
|
|
|
|
|
|
// Note that the only way we could have avoided setting the image blocking
|
|
|
|
// status above is if we have a current request and have kept it as the
|
|
|
|
// current request. In that case, we want to leave our old status, since the
|
|
|
|
// status corresponds to the current request. Even if we plan to do a
|
|
|
|
// pending request load, having an mCurrentRequest means that our current
|
|
|
|
// status is not a REJECT_* status, and doing the load shouldn't change that.
|
|
|
|
// XXXbz there is an issue here if different ACCEPT statuses are used, but...
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|
|
|
|
|
2005-09-20 02:05:48 +00:00
|
|
|
nsresult
|
|
|
|
nsImageLoadingContent::UseAsPrimaryRequest(imgIRequest* aRequest,
|
|
|
|
PRBool aNotify)
|
|
|
|
{
|
|
|
|
// Use an AutoStateChanger so that the clone call won't
|
|
|
|
// automatically notify from inside OnStopDecode.
|
|
|
|
NS_PRECONDITION(aRequest, "Must have a request here!");
|
|
|
|
AutoStateChanger changer(this, aNotify);
|
|
|
|
mCurrentURI = nsnull;
|
|
|
|
CancelImageRequests(NS_BINDING_ABORTED, PR_TRUE, nsIContentPolicy::ACCEPT);
|
|
|
|
|
|
|
|
NS_ASSERTION(!mCurrentRequest, "We should not have a current request now");
|
|
|
|
|
|
|
|
return aRequest->Clone(this, getter_AddRefs(mCurrentRequest));
|
|
|
|
}
|
|
|
|
|
2003-07-28 21:09:56 +00:00
|
|
|
nsIDocument*
|
|
|
|
nsImageLoadingContent::GetOurDocument()
|
2003-03-19 01:08:22 +00:00
|
|
|
{
|
2003-07-28 21:09:56 +00:00
|
|
|
nsCOMPtr<nsIContent> thisContent = do_QueryInterface(this);
|
|
|
|
NS_ENSURE_TRUE(thisContent, nsnull);
|
2003-03-19 01:08:22 +00:00
|
|
|
|
2004-10-11 16:29:42 +00:00
|
|
|
return thisContent->GetOwnerDoc();
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
2005-04-06 02:55:02 +00:00
|
|
|
nsImageLoadingContent::StringToURI(const nsAString& aSpec,
|
2003-03-19 01:08:22 +00:00
|
|
|
nsIDocument* aDocument,
|
|
|
|
nsIURI** aURI)
|
|
|
|
{
|
2003-04-15 01:09:09 +00:00
|
|
|
NS_PRECONDITION(aDocument, "Must have a document");
|
2003-03-19 01:08:22 +00:00
|
|
|
NS_PRECONDITION(aURI, "Null out param");
|
|
|
|
|
|
|
|
// (1) Get the base URI
|
2003-07-03 02:45:34 +00:00
|
|
|
nsCOMPtr<nsIContent> thisContent = do_QueryInterface(this);
|
|
|
|
NS_ASSERTION(thisContent, "An image loading content must be an nsIContent");
|
2004-01-09 23:54:21 +00:00
|
|
|
nsCOMPtr<nsIURI> baseURL = thisContent->GetBaseURI();
|
2003-03-19 01:08:22 +00:00
|
|
|
|
|
|
|
// (2) Get the charset
|
2003-10-22 06:09:48 +00:00
|
|
|
const nsACString &charset = aDocument->GetDocumentCharacterSet();
|
2003-03-19 01:08:22 +00:00
|
|
|
|
|
|
|
// (3) Construct the silly thing
|
|
|
|
return NS_NewURI(aURI,
|
|
|
|
aSpec,
|
2003-10-22 06:09:48 +00:00
|
|
|
charset.IsEmpty() ? nsnull : PromiseFlatCString(charset).get(),
|
2003-05-02 19:21:00 +00:00
|
|
|
baseURL,
|
2005-09-11 10:08:43 +00:00
|
|
|
nsContentUtils::GetIOService());
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Struct used to dispatch events
|
|
|
|
*/
|
2003-04-15 01:09:09 +00:00
|
|
|
MOZ_DECL_CTOR_COUNTER(ImageEvent)
|
|
|
|
|
2005-05-13 19:54:28 +00:00
|
|
|
class ImageEvent : public PLEvent
|
2003-05-09 20:42:49 +00:00
|
|
|
{
|
2003-06-24 05:32:59 +00:00
|
|
|
public:
|
2004-07-31 23:15:21 +00:00
|
|
|
ImageEvent(nsPresContext* aPresContext, nsIContent* aContent,
|
2005-05-13 19:54:28 +00:00
|
|
|
const nsAString& aMessage, nsIDocument* aDocument)
|
|
|
|
: mPresContext(aPresContext),
|
2003-03-19 05:38:33 +00:00
|
|
|
mContent(aContent),
|
2003-05-09 20:42:49 +00:00
|
|
|
mMessage(aMessage),
|
2005-05-13 19:54:28 +00:00
|
|
|
mDocument(aDocument)
|
2003-04-15 01:09:09 +00:00
|
|
|
{
|
|
|
|
MOZ_COUNT_CTOR(ImageEvent);
|
|
|
|
}
|
|
|
|
~ImageEvent()
|
|
|
|
{
|
|
|
|
MOZ_COUNT_DTOR(ImageEvent);
|
|
|
|
}
|
|
|
|
|
2004-07-31 23:15:21 +00:00
|
|
|
nsCOMPtr<nsPresContext> mPresContext;
|
2003-03-19 05:38:33 +00:00
|
|
|
nsCOMPtr<nsIContent> mContent;
|
|
|
|
nsString mMessage;
|
2005-05-13 19:54:28 +00:00
|
|
|
// Need to hold on to the document in case our event outlives document
|
|
|
|
// teardown... Wantto be able to get back to the document even if the
|
|
|
|
// prescontext and content can't.
|
|
|
|
nsCOMPtr<nsIDocument> mDocument;
|
2003-03-19 01:08:22 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
PR_STATIC_CALLBACK(void*)
|
|
|
|
HandleImagePLEvent(PLEvent* aEvent)
|
|
|
|
{
|
|
|
|
ImageEvent* evt = NS_STATIC_CAST(ImageEvent*, aEvent);
|
2003-03-19 05:38:33 +00:00
|
|
|
nsEventStatus estatus = nsEventStatus_eIgnore;
|
2004-01-12 08:25:18 +00:00
|
|
|
PRUint32 eventMsg;
|
2003-03-19 05:38:33 +00:00
|
|
|
|
2004-05-22 22:15:22 +00:00
|
|
|
if (evt->mMessage.EqualsLiteral("load")) {
|
2004-01-12 08:25:18 +00:00
|
|
|
eventMsg = NS_IMAGE_LOAD;
|
2003-03-19 05:38:33 +00:00
|
|
|
} else {
|
2004-01-12 08:25:18 +00:00
|
|
|
eventMsg = NS_IMAGE_ERROR;
|
2003-03-19 05:38:33 +00:00
|
|
|
}
|
|
|
|
|
2005-04-28 23:48:28 +00:00
|
|
|
nsEvent event(PR_TRUE, eventMsg);
|
2003-03-19 05:38:33 +00:00
|
|
|
evt->mContent->HandleDOMEvent(evt->mPresContext, &event, nsnull,
|
|
|
|
NS_EVENT_FLAG_INIT, &estatus);
|
2003-05-09 20:42:49 +00:00
|
|
|
|
2003-03-19 01:08:22 +00:00
|
|
|
return nsnull;
|
|
|
|
}
|
|
|
|
|
|
|
|
PR_STATIC_CALLBACK(void)
|
|
|
|
DestroyImagePLEvent(PLEvent* aEvent)
|
|
|
|
{
|
|
|
|
ImageEvent* evt = NS_STATIC_CAST(ImageEvent*, aEvent);
|
2005-08-23 23:24:30 +00:00
|
|
|
evt->mDocument->UnblockOnload(PR_TRUE);
|
2003-06-24 05:32:59 +00:00
|
|
|
|
2005-05-13 19:54:28 +00:00
|
|
|
delete evt;
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
|
|
nsImageLoadingContent::FireEvent(const nsAString& aEventType)
|
|
|
|
{
|
|
|
|
// We have to fire the event asynchronously so that we won't go into infinite
|
|
|
|
// loops in cases when onLoad handlers reset the src and the new src is in
|
|
|
|
// cache.
|
2003-05-09 20:42:49 +00:00
|
|
|
|
2003-07-28 21:09:56 +00:00
|
|
|
nsCOMPtr<nsIDocument> document = GetOurDocument();
|
2003-05-09 20:42:49 +00:00
|
|
|
if (!document) {
|
|
|
|
// no use to fire events if there is no document....
|
2003-07-28 21:09:56 +00:00
|
|
|
return NS_OK;
|
2003-05-09 20:42:49 +00:00
|
|
|
}
|
2003-03-19 01:08:22 +00:00
|
|
|
nsCOMPtr<nsIEventQueue> eventQ;
|
|
|
|
// Use the UI thread event queue (though we should not be getting called from
|
|
|
|
// off the UI thread in any case....)
|
2005-08-24 21:01:51 +00:00
|
|
|
nsresult rv = nsContentUtils::EventQueueService()->
|
|
|
|
GetSpecialEventQueue(nsIEventQueueService::UI_THREAD_EVENT_QUEUE,
|
|
|
|
getter_AddRefs(eventQ));
|
2003-03-19 01:08:22 +00:00
|
|
|
NS_ENSURE_TRUE(eventQ, rv);
|
|
|
|
|
2003-09-27 04:18:26 +00:00
|
|
|
nsIPresShell *shell = document->GetShellAt(0);
|
2003-03-19 05:38:33 +00:00
|
|
|
NS_ENSURE_TRUE(shell, NS_ERROR_FAILURE);
|
2003-05-09 20:42:49 +00:00
|
|
|
|
2004-08-20 20:34:37 +00:00
|
|
|
nsPresContext *presContext = shell->GetPresContext();
|
2003-03-19 05:38:33 +00:00
|
|
|
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
|
2003-05-09 20:42:49 +00:00
|
|
|
|
2003-03-19 05:38:33 +00:00
|
|
|
nsCOMPtr<nsIContent> ourContent = do_QueryInterface(this);
|
2003-03-19 01:08:22 +00:00
|
|
|
|
2005-05-13 19:54:28 +00:00
|
|
|
ImageEvent* evt = new ImageEvent(presContext, ourContent, aEventType, document);
|
2003-05-09 20:42:49 +00:00
|
|
|
|
2003-03-19 01:08:22 +00:00
|
|
|
NS_ENSURE_TRUE(evt, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
|
|
|
|
PL_InitEvent(evt, this, ::HandleImagePLEvent, ::DestroyImagePLEvent);
|
|
|
|
|
2005-05-13 19:54:28 +00:00
|
|
|
// Block onload for our event. Since we unblock in the event destructor, we
|
|
|
|
// want to block now, even if posting will fail.
|
|
|
|
document->BlockOnload();
|
|
|
|
|
2003-05-09 20:42:49 +00:00
|
|
|
rv = eventQ->PostEvent(evt);
|
|
|
|
|
2005-05-13 19:54:28 +00:00
|
|
|
if (NS_FAILED(rv)) {
|
2003-05-09 20:42:49 +00:00
|
|
|
PL_DestroyEvent(evt);
|
|
|
|
}
|
|
|
|
|
|
|
|
return rv;
|
2003-03-19 01:08:22 +00:00
|
|
|
}
|