static bool tryAccessHistoryURLs(Page* page, KURL& previousURL, KURL& currentURL)
{
if (!page)
return false;
Frame* frame = page->mainFrame();
if (!frame || !frame->document())
return false;
BackForwardList* list = page->backForwardList();
if (!list)
return false;
HistoryItem* previousItem = list->backItem();
if (!previousItem)
return false;
HistoryItem* currentItem = list->currentItem();
if (!currentItem)
return false;
previousURL = urlForHistoryItem(frame, previousItem);
currentURL = urlForHistoryItem(frame, currentItem);
return true;
}
// Main funnel for navigating to a previous location (back/forward, non-search snap-back)
// This includes recursion to handle loading into framesets properly
void HistoryController::goToItem(HistoryItem* targetItem, FrameLoadType type)
{
ASSERT(!m_frame->tree()->parent());
// shouldGoToHistoryItem is a private delegate method. This is needed to fix:
// <rdar://problem/3951283> can view pages from the back/forward cache that should be disallowed by Parental Controls
// Ultimately, history item navigations should go through the policy delegate. That's covered in:
// <rdar://problem/3979539> back/forward cache navigations should consult policy delegate
Page* page = m_frame->page();
if (!page)
return;
if (!m_frame->loader()->client()->shouldGoToHistoryItem(targetItem))
return;
// Set the BF cursor before commit, which lets the user quickly click back/forward again.
// - plus, it only makes sense for the top level of the operation through the frametree,
// as opposed to happening for some/one of the page commits that might happen soon
BackForwardList* bfList = page->backForwardList();
HistoryItem* currentItem = bfList->currentItem();
bfList->goToItem(targetItem);
Settings* settings = m_frame->settings();
page->setGlobalHistoryItem((!settings || settings->privateBrowsingEnabled()) ? 0 : targetItem);
recursiveGoToItem(targetItem, currentItem, type);
}
// BackForwardList.getCurrentIndex()
JNIEXPORT jint JNICALL Java_com_sun_webkit_BackForwardList_bflGetCurrentIndex(JNIEnv* env, jclass z, jlong jpage)
{
BackForwardList* bfl = getBfl(jpage);
return bfl->currentItem() ? bfl->backListCount() : -1;
}
