void NavigationScheduler::scheduleLocationChange(const String& url, const String& referrer, bool lockHistory, bool lockBackForwardList)
{
if (!m_frame->page())
return;
if (url.isEmpty())
return;
lockBackForwardList = lockBackForwardList || mustLockBackForwardList(m_frame);
FrameLoader* loader = m_frame->loader();
// If the URL we're going to navigate to is the same as the current one, except for the
// fragment part, we don't need to schedule the location change.
KURL parsedURL(ParsedURLString, url);
if (parsedURL.hasFragmentIdentifier() && equalIgnoringFragmentIdentifier(loader->url(), parsedURL)) {
loader->changeLocation(loader->completeURL(url), referrer, lockHistory, lockBackForwardList);
return;
}
// Handle a location change of a page with no document as a special case.
// This may happen when a frame changes the location of another frame.
bool duringLoad = !loader->stateMachine()->committedFirstRealDocumentLoad();
schedule(adoptPtr(new ScheduledLocationChange(url, referrer, lockHistory, lockBackForwardList, duringLoad)));
}
PassRefPtr<HistoryItem> HistoryController::createItemTree(Frame* targetFrame, bool clipAtTarget)
{
RefPtr<HistoryItem> bfItem = createItem();
saveScrollPositionAndViewStateToItem(m_previousItem.get());
if (!clipAtTarget || m_frame != targetFrame) {
// save frame state for items that aren't loading (khtml doesn't save those)
saveDocumentState();
// clipAtTarget is false for navigations within the same document, so
// we should copy the documentSequenceNumber over to the newly create
// item. Non-target items are just clones, and they should therefore
// preserve the same itemSequenceNumber.
if (m_previousItem) {
if (m_frame != targetFrame)
bfItem->setItemSequenceNumber(m_previousItem->itemSequenceNumber());
bfItem->setDocumentSequenceNumber(m_previousItem->documentSequenceNumber());
}
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) {
// If the child is a frame corresponding to an <object> element that never loaded,
// we don't want to create a history item, because that causes fallback content
// to be ignored on reload.
FrameLoader* childLoader = child->loader();
if (childLoader->stateMachine()->startedFirstRealLoad() || !child->ownerElement()->isObjectElement())
bfItem->addChildItem(childLoader->history()->createItemTree(targetFrame, clipAtTarget));
}
}
// FIXME: Eliminate the isTargetItem flag in favor of itemSequenceNumber.
if (m_frame == targetFrame)
bfItem->setIsTargetItem(true);
return bfItem;
}