author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 19 Mar 2010 09:52:28 +0200 | |
changeset 65 | 5bfc169077b2 |
parent 38 | 6297cdf66332 |
child 94 | 919f36ff910f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (C) 2006 Apple Computer, Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include "config.h" |
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#include "IconLoader.h" |
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#include "Document.h" |
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#include "Frame.h" |
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#include "FrameLoader.h" |
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#include "FrameLoaderClient.h" |
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#include "IconDatabase.h" |
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#include "Logging.h" |
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#include "ResourceHandle.h" |
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#include "ResourceResponse.h" |
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#include "ResourceRequest.h" |
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#include "SubresourceLoader.h" |
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using namespace std; |
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namespace WebCore { |
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IconLoader::IconLoader(Frame* frame) |
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: m_frame(frame) |
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, m_loadIsInProgress(false) |
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{ |
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} |
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auto_ptr<IconLoader> IconLoader::create(Frame* frame) |
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{ |
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return auto_ptr<IconLoader>(new IconLoader(frame)); |
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} |
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IconLoader::~IconLoader() |
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{ |
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} |
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void IconLoader::startLoading() |
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{ |
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if (m_resourceLoader) |
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return; |
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// FIXME: http://bugs.webkit.org/show_bug.cgi?id=10902 |
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// Once ResourceHandle will load without a DocLoader, we can remove this check. |
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// A frame may be documentless - one example is a frame containing only a PDF. |
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if (!m_frame->document()) { |
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LOG(IconDatabase, "Documentless-frame - icon won't be loaded"); |
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return; |
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} |
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// Set flag so we can detect the case where the load completes before |
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// SubresourceLoader::create returns. |
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m_loadIsInProgress = true; |
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RefPtr<SubresourceLoader> loader = SubresourceLoader::create(m_frame, this, m_frame->loader()->iconURL()); |
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if (!loader) |
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LOG_ERROR("Failed to start load for icon at url %s", m_frame->loader()->iconURL().url().ascii()); |
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// Store the handle so we can cancel the load if stopLoading is called later. |
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// But only do it if the load hasn't already completed. |
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if (m_loadIsInProgress) |
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m_resourceLoader = loader.release(); |
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} |
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void IconLoader::stopLoading() |
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{ |
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clearLoadingState(); |
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} |
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void IconLoader::didReceiveResponse(SubresourceLoader* resourceLoader, const ResourceResponse& response) |
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{ |
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// If we got a status code indicating an invalid response, then lets |
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// ignore the data and not try to decode the error page as an icon. |
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int status = response.httpStatusCode(); |
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LOG(IconDatabase, "IconLoader::didReceiveResponse() - Loader %p, response %i", resourceLoader, status); |
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if (status && (status < 200 || status > 299)) { |
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ResourceHandle* handle = resourceLoader->handle(); |
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finishLoading(handle ? handle->request().url() : KURL(), 0); |
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} |
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} |
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void IconLoader::didReceiveData(SubresourceLoader* loader, const char*, int size) |
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{ |
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LOG(IconDatabase, "IconLoader::didReceiveData() - Loader %p, number of bytes %i", loader, size); |
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} |
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void IconLoader::didFail(SubresourceLoader* resourceLoader, const ResourceError&) |
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{ |
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LOG(IconDatabase, "IconLoader::didFail() - Loader %p", resourceLoader); |
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// Until <rdar://problem/5463392> is resolved and we can properly cancel SubresourceLoaders when they get an error response, |
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// we need to be prepared to receive this call even after we've "finished loading" once. |
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// After it is resolved, we can restore an assertion that the load is in progress if ::didFail() is called |
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if (m_loadIsInProgress) { |
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ASSERT(resourceLoader == m_resourceLoader); |
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ResourceHandle* handle = resourceLoader->handle(); |
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finishLoading(handle ? handle->request().url() : KURL(), 0); |
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} |
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} |
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void IconLoader::didFinishLoading(SubresourceLoader* resourceLoader) |
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{ |
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LOG(IconDatabase, "IconLoader::didFinishLoading() - Loader %p", resourceLoader); |
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// Until <rdar://problem/5463392> is resolved and we can properly cancel SubresourceLoaders when they get an error response, |
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// we need to be prepared to receive this call even after we've "finished loading" once. |
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// After it is resolved, we can restore an assertion that the load is in progress if ::didFail() is called |
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if (m_loadIsInProgress) { |
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ASSERT(resourceLoader == m_resourceLoader); |
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ResourceHandle* handle = resourceLoader->handle(); |
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finishLoading(handle ? handle->request().url() : KURL(), m_resourceLoader->resourceData()); |
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} |
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} |
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void IconLoader::finishLoading(const KURL& iconURL, PassRefPtr<SharedBuffer> data) |
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{ |
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// When an icon load results in a 404 we commit it to the database here and clear the loading state. |
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// But the SubresourceLoader continues pulling in data in the background for the 404 page if the server sends one. |
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// Once that data finishes loading or if the load is cancelled while that data is being read, finishLoading ends up being called a second time. |
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// We need to change SubresourceLoader to have a mode where it will stop itself after receiving a 404 so this won't happen - |
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// in the meantime, we'll only commit this data to the IconDatabase if it's the first time ::finishLoading() is called |
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// <rdar://problem/5463392> tracks that enhancement |
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if (!iconURL.isEmpty() && m_loadIsInProgress) { |
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iconDatabase()->setIconDataForIconURL(data, iconURL.url()); |
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LOG(IconDatabase, "IconLoader::finishLoading() - Committing iconURL %s to database", iconURL.url().ascii()); |
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m_frame->loader()->commitIconURLToIconDatabase(iconURL); |
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m_frame->loader()->client()->dispatchDidReceiveIcon(); |
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} |
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clearLoadingState(); |
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} |
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void IconLoader::clearLoadingState() |
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{ |
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m_resourceLoader = 0; |
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m_loadIsInProgress = false; |
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} |
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} |