PassRefPtr<DOMStringList> Internals::formControlStateOfPreviousHistoryItem(ExceptionCode& ec)
{
HistoryItem* mainItem = frame()->loader()->history()->previousItem();
if (!mainItem) {
ec = INVALID_ACCESS_ERR;
return 0;
}
String uniqueName = frame()->tree()->uniqueName();
if (mainItem->target() != uniqueName && !mainItem->childItemWithTarget(uniqueName)) {
ec = INVALID_ACCESS_ERR;
return 0;
}
const Vector<String>& state = mainItem->target() == uniqueName ? mainItem->documentState() : mainItem->childItemWithTarget(uniqueName)->documentState();
RefPtr<DOMStringList> stringList = DOMStringList::create();
for (unsigned i = 0; i < state.size(); ++i)
stringList->append(state[i]);
return stringList.release();
}
static FrameState toFrameState(const HistoryItem& historyItem)
{
FrameState frameState;
frameState.urlString = historyItem.urlString();
frameState.originalURLString = historyItem.originalURLString();
frameState.referrer = historyItem.referrer();
frameState.target = historyItem.target();
frameState.documentState = historyItem.documentState();
if (RefPtr<SerializedScriptValue> stateObject = historyItem.stateObject())
frameState.stateObjectData = stateObject->data();
frameState.documentSequenceNumber = historyItem.documentSequenceNumber();
frameState.itemSequenceNumber = historyItem.itemSequenceNumber();
frameState.scrollPoint = historyItem.scrollPoint();
frameState.pageScaleFactor = historyItem.pageScaleFactor();
if (FormData* formData = const_cast<HistoryItem&>(historyItem).formData()) {
HTTPBody httpBody = toHTTPBody(*formData);
httpBody.contentType = historyItem.formContentType();
frameState.httpBody = WTF::move(httpBody);
}
#if PLATFORM(IOS)
frameState.exposedContentRect = historyItem.exposedContentRect();
frameState.unobscuredContentRect = historyItem.unobscuredContentRect();
frameState.minimumLayoutSizeInScrollViewCoordinates = historyItem.minimumLayoutSizeInScrollViewCoordinates();
frameState.contentSize = historyItem.contentSize();
frameState.scaleIsInitial = historyItem.scaleIsInitial();
#endif
for (auto& childHistoryItem : historyItem.children()) {
FrameState childFrameState = toFrameState(childHistoryItem);
frameState.children.append(WTF::move(childFrameState));
}
return frameState;
}
