--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/loader/DocumentLoader.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,769 @@
+/*
+ * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "DocumentLoader.h"
+
+#include "ApplicationCacheHost.h"
+#include "ArchiveFactory.h"
+#include "ArchiveResourceCollection.h"
+#include "CachedPage.h"
+#include "DocLoader.h"
+#include "Document.h"
+#include "DocumentParser.h"
+#include "Event.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameTree.h"
+#include "HistoryItem.h"
+#include "Logging.h"
+#include "MainResourceLoader.h"
+#include "Page.h"
+#include "PlatformString.h"
+#include "Settings.h"
+#include "SharedBuffer.h"
+
+#include <wtf/Assertions.h>
+#include <wtf/unicode/Unicode.h>
+
+namespace WebCore {
+
+static void cancelAll(const ResourceLoaderSet& loaders)
+{
+ const ResourceLoaderSet copy = loaders;
+ ResourceLoaderSet::const_iterator end = copy.end();
+ for (ResourceLoaderSet::const_iterator it = copy.begin(); it != end; ++it)
+ (*it)->cancel();
+}
+
+static void setAllDefersLoading(const ResourceLoaderSet& loaders, bool defers)
+{
+ const ResourceLoaderSet copy = loaders;
+ ResourceLoaderSet::const_iterator end = copy.end();
+ for (ResourceLoaderSet::const_iterator it = copy.begin(); it != end; ++it)
+ (*it)->setDefersLoading(defers);
+}
+
+DocumentLoader::DocumentLoader(const ResourceRequest& req, const SubstituteData& substituteData)
+ : m_deferMainResourceDataLoad(true)
+ , m_frame(0)
+ , m_originalRequest(req)
+ , m_substituteData(substituteData)
+ , m_originalRequestCopy(req)
+ , m_request(req)
+ , m_committed(false)
+ , m_isStopping(false)
+ , m_loading(false)
+ , m_gotFirstByte(false)
+ , m_primaryLoadComplete(false)
+ , m_isClientRedirect(false)
+ , m_stopRecordingResponses(false)
+ , m_substituteResourceDeliveryTimer(this, &DocumentLoader::substituteResourceDeliveryTimerFired)
+ , m_didCreateGlobalHistoryEntry(false)
+#if ENABLE(OFFLINE_WEB_APPLICATIONS)
+ , m_applicationCacheHost(new ApplicationCacheHost(this))
+#endif
+{
+}
+
+FrameLoader* DocumentLoader::frameLoader() const
+{
+ if (!m_frame)
+ return 0;
+ return m_frame->loader();
+}
+
+DocumentLoader::~DocumentLoader()
+{
+ ASSERT(!m_frame || frameLoader()->activeDocumentLoader() != this || !frameLoader()->isLoading());
+}
+
+PassRefPtr<SharedBuffer> DocumentLoader::mainResourceData() const
+{
+ if (m_mainResourceData)
+ return m_mainResourceData;
+ if (m_mainResourceLoader)
+ return m_mainResourceLoader->resourceData();
+ return 0;
+}
+
+const ResourceRequest& DocumentLoader::originalRequest() const
+{
+ return m_originalRequest;
+}
+
+const ResourceRequest& DocumentLoader::originalRequestCopy() const
+{
+ return m_originalRequestCopy;
+}
+
+const ResourceRequest& DocumentLoader::request() const
+{
+ return m_request;
+}
+
+ResourceRequest& DocumentLoader::request()
+{
+ return m_request;
+}
+
+const KURL& DocumentLoader::url() const
+{
+ return request().url();
+}
+
+void DocumentLoader::replaceRequestURLForSameDocumentNavigation(const KURL& url)
+{
+ m_originalRequestCopy.setURL(url);
+ m_request.setURL(url);
+}
+
+void DocumentLoader::setRequest(const ResourceRequest& req)
+{
+ // Replacing an unreachable URL with alternate content looks like a server-side
+ // redirect at this point, but we can replace a committed dataSource.
+ bool handlingUnreachableURL = false;
+
+ handlingUnreachableURL = m_substituteData.isValid() && !m_substituteData.failingURL().isEmpty();
+
+ if (handlingUnreachableURL)
+ m_committed = false;
+
+ // We should never be getting a redirect callback after the data
+ // source is committed, except in the unreachable URL case. It
+ // would be a WebFoundation bug if it sent a redirect callback after commit.
+ ASSERT(!m_committed);
+
+ KURL oldURL = m_request.url();
+ m_request = req;
+
+ // Only send webView:didReceiveServerRedirectForProvisionalLoadForFrame: if URL changed.
+ // Also, don't send it when replacing unreachable URLs with alternate content.
+ if (!handlingUnreachableURL && oldURL != req.url())
+ frameLoader()->didReceiveServerRedirectForProvisionalLoadForFrame();
+}
+
+void DocumentLoader::setMainDocumentError(const ResourceError& error)
+{
+ m_mainDocumentError = error;
+ frameLoader()->setMainDocumentError(this, error);
+ }
+
+void DocumentLoader::clearErrors()
+{
+ m_mainDocumentError = ResourceError();
+}
+
+void DocumentLoader::mainReceivedError(const ResourceError& error, bool isComplete)
+{
+ ASSERT(!error.isNull());
+
+#if ENABLE(OFFLINE_WEB_APPLICATIONS)
+ m_applicationCacheHost->failedLoadingMainResource();
+#endif
+
+ if (!frameLoader())
+ return;
+ setMainDocumentError(error);
+ if (isComplete)
+ frameLoader()->mainReceivedCompleteError(this, error);
+}
+
+// Cancels the data source's pending loads. Conceptually, a data source only loads
+// one document at a time, but one document may have many related resources.
+// stopLoading will stop all loads initiated by the data source,
+// but not loads initiated by child frames' data sources -- that's the WebFrame's job.
+void DocumentLoader::stopLoading(DatabasePolicy databasePolicy)
+{
+ // In some rare cases, calling FrameLoader::stopLoading could set m_loading to false.
+ // (This can happen when there's a single XMLHttpRequest currently loading and stopLoading causes it
+ // to stop loading. Because of this, we need to save it so we don't return early.
+ bool loading = m_loading;
+
+ if (m_committed) {
+ // Attempt to stop the frame if the document loader is loading, or if it is done loading but
+ // still parsing. Failure to do so can cause a world leak.
+ Document* doc = m_frame->document();
+
+ if (loading || doc->parsing())
+ m_frame->loader()->stopLoading(UnloadEventPolicyNone, databasePolicy);
+ }
+
+ // Always cancel multipart loaders
+ cancelAll(m_multipartSubresourceLoaders);
+
+ if (!loading)
+ return;
+
+ RefPtr<Frame> protectFrame(m_frame);
+ RefPtr<DocumentLoader> protectLoader(this);
+
+ m_isStopping = true;
+
+ FrameLoader* frameLoader = DocumentLoader::frameLoader();
+
+ if (m_mainResourceLoader)
+ // Stop the main resource loader and let it send the cancelled message.
+ m_mainResourceLoader->cancel();
+ else if (!m_subresourceLoaders.isEmpty())
+ // The main resource loader already finished loading. Set the cancelled error on the
+ // document and let the subresourceLoaders send individual cancelled messages below.
+ setMainDocumentError(frameLoader->cancelledError(m_request));
+ else
+ // If there are no resource loaders, we need to manufacture a cancelled message.
+ // (A back/forward navigation has no resource loaders because its resources are cached.)
+ mainReceivedError(frameLoader->cancelledError(m_request), true);
+
+ stopLoadingSubresources();
+ stopLoadingPlugIns();
+
+ m_isStopping = false;
+}
+
+void DocumentLoader::setupForReplace()
+{
+ frameLoader()->setupForReplace();
+ m_committed = false;
+}
+
+void DocumentLoader::commitIfReady()
+{
+ if (m_gotFirstByte && !m_committed) {
+ m_committed = true;
+ frameLoader()->commitProvisionalLoad();
+ }
+}
+
+void DocumentLoader::finishedLoading()
+{
+ m_gotFirstByte = true;
+ commitIfReady();
+ if (FrameLoader* loader = frameLoader()) {
+ loader->finishedLoadingDocument(this);
+ loader->writer()->end();
+ }
+}
+
+void DocumentLoader::commitLoad(const char* data, int length)
+{
+ // Both unloading the old page and parsing the new page may execute JavaScript which destroys the datasource
+ // by starting a new load, so retain temporarily.
+ RefPtr<DocumentLoader> protect(this);
+
+ commitIfReady();
+ if (FrameLoader* frameLoader = DocumentLoader::frameLoader())
+ frameLoader->committedLoad(this, data, length);
+}
+
+bool DocumentLoader::doesProgressiveLoad(const String& MIMEType) const
+{
+ return !frameLoader()->isReplacing() || MIMEType == "text/html";
+}
+
+void DocumentLoader::receivedData(const char* data, int length)
+{
+ m_gotFirstByte = true;
+ if (doesProgressiveLoad(m_response.mimeType()))
+ commitLoad(data, length);
+}
+
+void DocumentLoader::setupForReplaceByMIMEType(const String& newMIMEType)
+{
+ if (!m_gotFirstByte)
+ return;
+
+ String oldMIMEType = m_response.mimeType();
+
+ if (!doesProgressiveLoad(oldMIMEType)) {
+ frameLoader()->revertToProvisional(this);
+ setupForReplace();
+ RefPtr<SharedBuffer> resourceData = mainResourceData();
+ commitLoad(resourceData->data(), resourceData->size());
+ }
+
+ frameLoader()->finishedLoadingDocument(this);
+ m_frame->loader()->writer()->end();
+
+ frameLoader()->setReplacing();
+ m_gotFirstByte = false;
+
+ if (doesProgressiveLoad(newMIMEType)) {
+ frameLoader()->revertToProvisional(this);
+ setupForReplace();
+ }
+
+ stopLoadingSubresources();
+ stopLoadingPlugIns();
+ clearArchiveResources();
+}
+
+void DocumentLoader::updateLoading()
+{
+ if (!m_frame) {
+ setLoading(false);
+ return;
+ }
+ ASSERT(this == frameLoader()->activeDocumentLoader());
+ setLoading(frameLoader()->isLoading());
+}
+
+void DocumentLoader::setFrame(Frame* frame)
+{
+ if (m_frame == frame)
+ return;
+ ASSERT(frame && !m_frame);
+ m_frame = frame;
+ attachToFrame();
+}
+
+void DocumentLoader::attachToFrame()
+{
+ ASSERT(m_frame);
+}
+
+void DocumentLoader::detachFromFrame()
+{
+ ASSERT(m_frame);
+#if ENABLE(OFFLINE_WEB_APPLICATIONS)
+ m_applicationCacheHost->setDOMApplicationCache(0);
+#endif
+ m_frame = 0;
+}
+
+void DocumentLoader::prepareForLoadStart()
+{
+ ASSERT(!m_isStopping);
+ setPrimaryLoadComplete(false);
+ ASSERT(frameLoader());
+ clearErrors();
+
+ setLoading(true);
+
+ frameLoader()->prepareForLoadStart();
+}
+
+void DocumentLoader::setPrimaryLoadComplete(bool flag)
+{
+ m_primaryLoadComplete = flag;
+ if (flag) {
+ if (m_mainResourceLoader) {
+ m_mainResourceData = m_mainResourceLoader->resourceData();
+ m_mainResourceLoader = 0;
+ }
+
+ if (this == frameLoader()->activeDocumentLoader())
+ updateLoading();
+ }
+}
+
+bool DocumentLoader::isLoadingInAPISense() const
+{
+ // Once a frame has loaded, we no longer need to consider subresources,
+ // but we still need to consider subframes.
+ if (frameLoader()->state() != FrameStateComplete) {
+ if (!m_primaryLoadComplete && isLoading())
+ return true;
+ if (!m_subresourceLoaders.isEmpty())
+ return true;
+ Document* doc = m_frame->document();
+ if (doc->docLoader()->requestCount())
+ return true;
+ if (DocumentParser* parser = doc->parser())
+ if (parser->processingData())
+ return true;
+ }
+ return frameLoader()->subframeIsLoading();
+}
+
+void DocumentLoader::addAllArchiveResources(Archive* archive)
+{
+ if (!m_archiveResourceCollection)
+ m_archiveResourceCollection.set(new ArchiveResourceCollection);
+
+ ASSERT(archive);
+ if (!archive)
+ return;
+
+ m_archiveResourceCollection->addAllResources(archive);
+}
+
+// FIXME: Adding a resource directly to a DocumentLoader/ArchiveResourceCollection seems like bad design, but is API some apps rely on.
+// Can we change the design in a manner that will let us deprecate that API without reducing functionality of those apps?
+void DocumentLoader::addArchiveResource(PassRefPtr<ArchiveResource> resource)
+{
+ if (!m_archiveResourceCollection)
+ m_archiveResourceCollection.set(new ArchiveResourceCollection);
+
+ ASSERT(resource);
+ if (!resource)
+ return;
+
+ m_archiveResourceCollection->addResource(resource);
+}
+
+ArchiveResource* DocumentLoader::archiveResourceForURL(const KURL& url) const
+{
+ if (!m_archiveResourceCollection)
+ return 0;
+
+ ArchiveResource* resource = m_archiveResourceCollection->archiveResourceForURL(url);
+
+ return resource && !resource->shouldIgnoreWhenUnarchiving() ? resource : 0;
+}
+
+PassRefPtr<Archive> DocumentLoader::popArchiveForSubframe(const String& frameName)
+{
+ return m_archiveResourceCollection ? m_archiveResourceCollection->popSubframeArchive(frameName) : 0;
+}
+
+void DocumentLoader::clearArchiveResources()
+{
+ m_archiveResourceCollection.clear();
+ m_substituteResourceDeliveryTimer.stop();
+}
+
+void DocumentLoader::setParsedArchiveData(PassRefPtr<SharedBuffer> data)
+{
+ m_parsedArchiveData = data;
+}
+
+SharedBuffer* DocumentLoader::parsedArchiveData() const
+{
+ return m_parsedArchiveData.get();
+}
+
+PassRefPtr<ArchiveResource> DocumentLoader::mainResource() const
+{
+ const ResourceResponse& r = response();
+ RefPtr<SharedBuffer> mainResourceBuffer = mainResourceData();
+ if (!mainResourceBuffer)
+ mainResourceBuffer = SharedBuffer::create();
+
+ return ArchiveResource::create(mainResourceBuffer, r.url(), r.mimeType(), r.textEncodingName(), frame()->tree()->name());
+}
+
+PassRefPtr<ArchiveResource> DocumentLoader::subresource(const KURL& url) const
+{
+ if (!isCommitted())
+ return 0;
+
+ CachedResource* resource = m_frame->document()->docLoader()->cachedResource(url);
+ if (!resource || !resource->isLoaded())
+ return archiveResourceForURL(url);
+
+ // FIXME: This has the side effect of making the resource non-purgeable.
+ // It would be better if it didn't have this permanent effect.
+ if (!resource->makePurgeable(false))
+ return 0;
+
+ RefPtr<SharedBuffer> data = resource->data();
+ if (!data)
+ return 0;
+
+ return ArchiveResource::create(data.release(), url, resource->response());
+}
+
+void DocumentLoader::getSubresources(Vector<PassRefPtr<ArchiveResource> >& subresources) const
+{
+ if (!isCommitted())
+ return;
+
+ Document* document = m_frame->document();
+
+ const DocLoader::DocumentResourceMap& allResources = document->docLoader()->allCachedResources();
+ DocLoader::DocumentResourceMap::const_iterator end = allResources.end();
+ for (DocLoader::DocumentResourceMap::const_iterator it = allResources.begin(); it != end; ++it) {
+ RefPtr<ArchiveResource> subresource = this->subresource(KURL(ParsedURLString, it->second->url()));
+ if (subresource)
+ subresources.append(subresource.release());
+ }
+
+ return;
+}
+
+void DocumentLoader::deliverSubstituteResourcesAfterDelay()
+{
+ if (m_pendingSubstituteResources.isEmpty())
+ return;
+ ASSERT(m_frame && m_frame->page());
+ if (m_frame->page()->defersLoading())
+ return;
+ if (!m_substituteResourceDeliveryTimer.isActive())
+ m_substituteResourceDeliveryTimer.startOneShot(0);
+}
+
+void DocumentLoader::substituteResourceDeliveryTimerFired(Timer<DocumentLoader>*)
+{
+ if (m_pendingSubstituteResources.isEmpty())
+ return;
+ ASSERT(m_frame && m_frame->page());
+ if (m_frame->page()->defersLoading())
+ return;
+
+ SubstituteResourceMap copy;
+ copy.swap(m_pendingSubstituteResources);
+
+ SubstituteResourceMap::const_iterator end = copy.end();
+ for (SubstituteResourceMap::const_iterator it = copy.begin(); it != end; ++it) {
+ RefPtr<ResourceLoader> loader = it->first;
+ SubstituteResource* resource = it->second.get();
+
+ if (resource) {
+ SharedBuffer* data = resource->data();
+
+ loader->didReceiveResponse(resource->response());
+ loader->didReceiveData(data->data(), data->size(), data->size(), true);
+ loader->didFinishLoading();
+ } else {
+ // A null resource means that we should fail the load.
+ // FIXME: Maybe we should use another error here - something like "not in cache".
+ loader->didFail(loader->cannotShowURLError());
+ }
+ }
+}
+
+#ifndef NDEBUG
+bool DocumentLoader::isSubstituteLoadPending(ResourceLoader* loader) const
+{
+ return m_pendingSubstituteResources.contains(loader);
+}
+#endif
+
+void DocumentLoader::cancelPendingSubstituteLoad(ResourceLoader* loader)
+{
+ if (m_pendingSubstituteResources.isEmpty())
+ return;
+ m_pendingSubstituteResources.remove(loader);
+ if (m_pendingSubstituteResources.isEmpty())
+ m_substituteResourceDeliveryTimer.stop();
+}
+
+bool DocumentLoader::scheduleArchiveLoad(ResourceLoader* loader, const ResourceRequest& request, const KURL& originalURL)
+{
+ ArchiveResource* resource = 0;
+
+ if (request.url() == originalURL)
+ resource = archiveResourceForURL(originalURL);
+
+ if (!resource) {
+ // WebArchiveDebugMode means we fail loads instead of trying to fetch them from the network if they're not in the archive.
+ bool shouldFailLoad = m_frame->settings()->webArchiveDebugModeEnabled() && ArchiveFactory::isArchiveMimeType(responseMIMEType());
+
+ if (!shouldFailLoad)
+ return false;
+ }
+
+ m_pendingSubstituteResources.set(loader, resource);
+ deliverSubstituteResourcesAfterDelay();
+
+ return true;
+}
+
+void DocumentLoader::addResponse(const ResourceResponse& r)
+{
+ if (!m_stopRecordingResponses)
+ m_responses.append(r);
+}
+
+void DocumentLoader::stopRecordingResponses()
+{
+ m_stopRecordingResponses = true;
+}
+
+void DocumentLoader::setTitle(const String& title)
+{
+ if (title.isEmpty())
+ return;
+
+ if (m_pageTitle != title) {
+ frameLoader()->willChangeTitle(this);
+ m_pageTitle = title;
+ frameLoader()->didChangeTitle(this);
+ }
+}
+
+void DocumentLoader::setIconURL(const String& iconURL)
+{
+ if (iconURL.isEmpty())
+ return;
+
+ if (m_pageIconURL != iconURL) {
+ m_pageIconURL = iconURL;
+ frameLoader()->didChangeIcons(this);
+ }
+}
+
+KURL DocumentLoader::urlForHistory() const
+{
+ // Return the URL to be used for history and B/F list.
+ // Returns nil for WebDataProtocol URLs that aren't alternates
+ // for unreachable URLs, because these can't be stored in history.
+ if (m_substituteData.isValid())
+ return unreachableURL();
+
+ return m_originalRequestCopy.url();
+}
+
+bool DocumentLoader::urlForHistoryReflectsFailure() const
+{
+ return m_substituteData.isValid() || m_response.httpStatusCode() >= 400;
+}
+
+const KURL& DocumentLoader::originalURL() const
+{
+ return m_originalRequestCopy.url();
+}
+
+const KURL& DocumentLoader::requestURL() const
+{
+ return request().url();
+}
+
+const KURL& DocumentLoader::responseURL() const
+{
+ return m_response.url();
+}
+
+const String& DocumentLoader::responseMIMEType() const
+{
+ return m_response.mimeType();
+}
+
+const KURL& DocumentLoader::unreachableURL() const
+{
+ return m_substituteData.failingURL();
+}
+
+void DocumentLoader::setDefersLoading(bool defers)
+{
+ if (m_mainResourceLoader)
+ m_mainResourceLoader->setDefersLoading(defers);
+ setAllDefersLoading(m_subresourceLoaders, defers);
+ setAllDefersLoading(m_plugInStreamLoaders, defers);
+ if (!defers)
+ deliverSubstituteResourcesAfterDelay();
+}
+
+void DocumentLoader::stopLoadingPlugIns()
+{
+ cancelAll(m_plugInStreamLoaders);
+}
+
+void DocumentLoader::stopLoadingSubresources()
+{
+ cancelAll(m_subresourceLoaders);
+}
+
+void DocumentLoader::addSubresourceLoader(ResourceLoader* loader)
+{
+ m_subresourceLoaders.add(loader);
+ setLoading(true);
+}
+
+void DocumentLoader::removeSubresourceLoader(ResourceLoader* loader)
+{
+ m_subresourceLoaders.remove(loader);
+ updateLoading();
+ if (Frame* frame = m_frame)
+ frame->loader()->checkLoadComplete();
+}
+
+void DocumentLoader::addPlugInStreamLoader(ResourceLoader* loader)
+{
+ m_plugInStreamLoaders.add(loader);
+ setLoading(true);
+}
+
+void DocumentLoader::removePlugInStreamLoader(ResourceLoader* loader)
+{
+ m_plugInStreamLoaders.remove(loader);
+ updateLoading();
+}
+
+bool DocumentLoader::isLoadingMainResource() const
+{
+ return !!m_mainResourceLoader;
+}
+
+bool DocumentLoader::isLoadingSubresources() const
+{
+ return !m_subresourceLoaders.isEmpty();
+}
+
+bool DocumentLoader::isLoadingPlugIns() const
+{
+ return !m_plugInStreamLoaders.isEmpty();
+}
+
+bool DocumentLoader::isLoadingMultipartContent() const
+{
+ return m_mainResourceLoader && m_mainResourceLoader->isLoadingMultipartContent();
+}
+
+bool DocumentLoader::startLoadingMainResource(unsigned long identifier)
+{
+ ASSERT(!m_mainResourceLoader);
+ m_mainResourceLoader = MainResourceLoader::create(m_frame);
+ m_mainResourceLoader->setIdentifier(identifier);
+
+ // FIXME: Is there any way the extra fields could have not been added by now?
+ // If not, it would be great to remove this line of code.
+ frameLoader()->addExtraFieldsToMainResourceRequest(m_request);
+
+ if (!m_mainResourceLoader->load(m_request, m_substituteData)) {
+ // FIXME: If this should really be caught, we should just ASSERT this doesn't happen;
+ // should it be caught by other parts of WebKit or other parts of the app?
+ LOG_ERROR("could not create WebResourceHandle for URL %s -- should be caught by policy handler level", m_request.url().string().ascii().data());
+ m_mainResourceLoader = 0;
+ return false;
+ }
+
+ return true;
+}
+
+void DocumentLoader::cancelMainResourceLoad(const ResourceError& error)
+{
+ m_mainResourceLoader->cancel(error);
+}
+
+void DocumentLoader::subresourceLoaderFinishedLoadingOnePart(ResourceLoader* loader)
+{
+ m_multipartSubresourceLoaders.add(loader);
+ m_subresourceLoaders.remove(loader);
+ updateLoading();
+ if (Frame* frame = m_frame)
+ frame->loader()->checkLoadComplete();
+}
+
+void DocumentLoader::iconLoadDecisionAvailable()
+{
+ if (m_frame)
+ m_frame->loader()->iconLoadDecisionAvailable();
+}
+
+}