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()->end();
frameLoader()->setReplacing();
m_gotFirstByte = false;
if (doesProgressiveLoad(newMIMEType)) {
frameLoader()->revertToProvisional(this);
setupForReplace();
}
stopLoadingSubresources();
stopLoadingPlugIns();
#if ENABLE(ARCHIVE) // ANDROID extension: disabled to reduce code size
clearArchiveResources();
#endif
}
void DocumentLoader::setupForReplaceByMIMEType(const String& newMIMEType)
{
if (!m_gotFirstByte)
return;
String oldMIMEType = m_response.mimeType();
if (!doesProgressiveLoad(oldMIMEType)) {
frameLoader()->client()->revertToProvisionalState(this);
setupForReplace();
RefPtr<SharedBuffer> resourceData = mainResourceData();
commitLoad(resourceData->data(), resourceData->size());
}
frameLoader()->finishedLoadingDocument(this);
m_writer.end();
frameLoader()->setReplacing();
m_gotFirstByte = false;
if (doesProgressiveLoad(newMIMEType)) {
frameLoader()->client()->revertToProvisionalState(this);
setupForReplace();
}
stopLoadingSubresources();
stopLoadingPlugIns();
#if ENABLE(WEB_ARCHIVE) || ENABLE(MHTML)
clearArchiveResources();
#endif
}
// 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()
{
RefPtr<Frame> protectFrame(m_frame);
RefPtr<DocumentLoader> protectLoader(this);
// In some rare cases, calling FrameLoader::stopLoading could cause isLoading() to return 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 = isLoading();
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);
}
// Always cancel multipart loaders
cancelAll(m_multipartResourceLoaders);
clearArchiveResources();
if (!loading) {
// If something above restarted loading we might run into mysterious crashes like
// https://bugs.webkit.org/show_bug.cgi?id=62764 and <rdar://problem/9328684>
ASSERT(!isLoading());
return;
}
// We might run in to infinite recursion if we're stopping loading as the result of
// detaching from the frame, so break out of that recursion here.
// See <rdar://problem/9673866> for more details.
if (m_isStopping)
return;
m_isStopping = true;
FrameLoader* frameLoader = DocumentLoader::frameLoader();
if (isLoadingMainResource())
// Stop the main resource loader and let it send the cancelled message.
cancelMainResourceLoad(frameLoader->cancelledError(m_request));
else if (!m_resourceLoaders.isEmpty())
// The main resource loader already finished loading. Set the cancelled error on the
// document and let the resourceLoaders 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));
stopLoadingSubresources();
m_isStopping = false;
}
void DocumentLoader::setupForReplace()
{
if (!mainResourceData())
return;
maybeFinishLoadingMultipartContent();
maybeCreateArchive();
m_writer.end();
frameLoader()->setReplacing();
m_gotFirstByte = false;
stopLoadingSubresources();
stopLoadingPlugIns();
#if ENABLE(WEB_ARCHIVE) || ENABLE(MHTML)
clearArchiveResources();
#endif
}