void HistoryController::goToItem(HistoryItem* targetItem, ResourceRequestCachePolicy cachePolicy)
{
if (m_defersLoading) {
m_deferredItem = targetItem;
m_deferredCachePolicy = cachePolicy;
return;
}
OwnPtr<HistoryEntry> newEntry = HistoryEntry::create(targetItem);
Deque<HistoryNode*> historyNodes;
historyNodes.append(newEntry->rootHistoryNode());
while (!historyNodes.isEmpty()) {
// For each item, read the children (if any) off the HistoryItem,
// create a new HistoryNode for each child and attach it,
// then clear the children on the HistoryItem.
HistoryNode* historyNode = historyNodes.takeFirst();
const HistoryItemVector& children = historyNode->value()->children();
for (size_t i = 0; i < children.size(); i++) {
HistoryNode* childHistoryNode = historyNode->addChild(children[i].get());
historyNodes.append(childHistoryNode);
}
historyNode->value()->clearChildren();
}
goToEntry(newEntry.release(), cachePolicy);
}
PassOwnPtr<HistoryNode> HistoryNode::cloneAndReplace(HistoryEntry* newEntry, HistoryItem* newItem, bool clipAtTarget, LocalFrame* targetFrame, LocalFrame* currentFrame)
{
bool isNodeBeingNavigated = targetFrame == currentFrame;
HistoryItem* itemForCreate = isNodeBeingNavigated ? newItem : m_value.get();
OwnPtr<HistoryNode> newHistoryNode = create(newEntry, itemForCreate, currentFrame->frameID());
if (!clipAtTarget || !isNodeBeingNavigated) {
for (LocalFrame* child = currentFrame->tree().firstChild(); child; child = child->tree().nextSibling()) {
HistoryNode* childHistoryNode = m_entry->historyNodeForFrame(child);
if (!childHistoryNode)
continue;
newHistoryNode->m_children.append(childHistoryNode->cloneAndReplace(newEntry, newItem, clipAtTarget, targetFrame, child));
}
}
return newHistoryNode.release();
}
void HistoryController::goToItem(HistoryItem* targetItem, ResourceRequestCachePolicy cachePolicy)
{
// We don't have enough information to set a correct frame id here. This might be a restore from
// disk, and the frame ids might not match up if the state was saved from a different process.
// Ensure the HistoryEntry's main frame id matches the actual main frame id. Its subframe ids
// are invalid to ensure they don't accidentally match a potentially random frame.
OwnPtr<HistoryEntry> newEntry = HistoryEntry::create(targetItem, m_page->mainFrame()->frameID());
Deque<HistoryNode*> historyNodes;
historyNodes.append(newEntry->rootHistoryNode());
while (!historyNodes.isEmpty()) {
// For each item, read the children (if any) off the HistoryItem,
// create a new HistoryNode for each child and attach it,
// then clear the children on the HistoryItem.
HistoryNode* historyNode = historyNodes.takeFirst();
const HistoryItemVector& children = historyNode->value()->deprecatedChildren();
for (size_t i = 0; i < children.size(); i++) {
HistoryNode* childHistoryNode = historyNode->addChild(children[i].get(), -1);
historyNodes.append(childHistoryNode);
}
historyNode->value()->deprecatedClearChildren();
}
goToEntry(newEntry.release(), cachePolicy);
}