void HistoryController::recursiveUpdateForCommit()
{
// The frame that navigated will now have a null provisional item.
// Ignore it and its children.
if (!m_provisionalItem)
return;
// For each frame that already had the content the item requested (based on
// (a matching URL and frame tree snapshot), just restore the scroll position.
// Save form state (works from currentItem, since m_frameLoadComplete is true)
if (m_currentItem && itemsAreClones(m_currentItem.get(), m_provisionalItem.get())) {
ASSERT(m_frameLoadComplete);
saveDocumentState();
saveScrollPositionAndViewStateToItem(m_currentItem.get());
if (FrameView* view = m_frame->view())
view->setWasScrolledByUser(false);
// Now commit the provisional item
m_frameLoadComplete = false;
m_previousItem = m_currentItem;
m_currentItem = m_provisionalItem;
m_provisionalItem = 0;
// Restore form state (works from currentItem)
restoreDocumentState();
// Restore the scroll position (we choose to do this rather than going back to the anchor point)
restoreScrollPositionAndViewState();
}
// Iterate over the rest of the tree
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
child->loader()->history()->recursiveUpdateForCommit();
}
void CmdAddPointGraph::cmdUndo ()
{
LOG4CPP_INFO_S ((*mainCat)) << "CmdAddPointGraph::cmdUndo";
saveOrCheckPostCommandDocumentStateHash (document ());
restoreDocumentState (document ());
mainWindow().updateAfterCommand();
saveOrCheckPreCommandDocumentStateHash (document ());
}
// The general idea here is to traverse the frame tree and the item tree in parallel,
// tracking whether each frame already has the content the item requests. If there is
// a match (by URL), we just restore scroll position and recurse. Otherwise we must
// reload that frame, and all its kids.
void HistoryController::recursiveGoToItem(HistoryItem* item, HistoryItem* fromItem, FrameLoadType type)
{
ASSERT(item);
ASSERT(fromItem);
KURL itemURL = item->url();
KURL currentURL;
if (m_frame->loader()->documentLoader())
currentURL = m_frame->loader()->documentLoader()->url();
// Always reload the target frame of the item we're going to. This ensures that we will
// do -some- load for the transition, which means a proper notification will be posted
// to the app.
// The exact URL has to match, including fragment. We want to go through the _load
// method, even if to do a within-page navigation.
// The current frame tree and the frame tree snapshot in the item have to match.
if (!item->isTargetItem() &&
itemURL == currentURL &&
((m_frame->tree()->name().isEmpty() && item->target().isEmpty()) || m_frame->tree()->name() == item->target()) &&
childFramesMatchItem(item))
{
// This content is good, so leave it alone and look for children that need reloading
// Save form state (works from currentItem, since prevItem is nil)
ASSERT(!m_previousItem);
saveDocumentState();
saveScrollPositionAndViewStateToItem(m_currentItem.get());
if (FrameView* view = m_frame->view())
view->setWasScrolledByUser(false);
m_currentItem = item;
// Restore form state (works from currentItem)
restoreDocumentState();
// Restore the scroll position (we choose to do this rather than going back to the anchor point)
restoreScrollPositionAndViewState();
const HistoryItemVector& childItems = item->children();
int size = childItems.size();
for (int i = 0; i < size; ++i) {
String childFrameName = childItems[i]->target();
HistoryItem* fromChildItem = fromItem->childItemWithTarget(childFrameName);
ASSERT(fromChildItem || fromItem->isTargetItem());
Frame* childFrame = m_frame->tree()->child(childFrameName);
ASSERT(childFrame);
childFrame->loader()->history()->recursiveGoToItem(childItems[i].get(), fromChildItem, type);
}
} else {
m_frame->loader()->loadItem(item, type);
}
}
// The general idea here is to traverse the frame tree and the item tree in parallel,
// tracking whether each frame already has the content the item requests. If there is
// a match (by URL), we just restore scroll position and recurse. Otherwise we must
// reload that frame, and all its kids.
void HistoryController::recursiveGoToItem(HistoryItem* item, HistoryItem* fromItem, FrameLoadType type)
{
ASSERT(item);
ASSERT(fromItem);
// If the item we're going to is a clone of the item we're at, then do
// not load it again, and continue history traversal to its children.
// The current frame tree and the frame tree snapshot in the item have
// to match.
// Note: If item and fromItem are the same, then we need to create a new
// document.
if (item != fromItem
&& item->itemSequenceNumber() == fromItem->itemSequenceNumber()
&& currentFramesMatchItem(item)
&& fromItem->hasSameFrames(item))
{
// This content is good, so leave it alone and look for children that need reloading
// Save form state (works from currentItem, since m_frameLoadComplete is true)
ASSERT(m_frameLoadComplete);
saveDocumentState();
saveScrollPositionAndViewStateToItem(m_currentItem.get());
if (FrameView* view = m_frame->view())
view->setWasScrolledByUser(false);
m_previousItem = m_currentItem;
m_currentItem = item;
// Restore form state (works from currentItem)
restoreDocumentState();
// Restore the scroll position (we choose to do this rather than going back to the anchor point)
restoreScrollPositionAndViewState();
const HistoryItemVector& childItems = item->children();
int size = childItems.size();
for (int i = 0; i < size; ++i) {
String childFrameName = childItems[i]->target();
HistoryItem* fromChildItem = fromItem->childItemWithTarget(childFrameName);
ASSERT(fromChildItem);
Frame* childFrame = m_frame->tree()->child(childFrameName);
ASSERT(childFrame);
childFrame->loader()->history()->recursiveGoToItem(childItems[i].get(), fromChildItem, type);
}
} else {
m_frame->loader()->loadItem(item, type);
}
}
