void AutoscrollController::stopAutoscrollTimer(bool rendererIsBeingDestroyed)
{
RenderBox* scrollable = m_autoscrollRenderer;
m_autoscrollTimer.stop();
m_autoscrollRenderer = 0;
if (!scrollable)
return;
Frame& frame = scrollable->frame();
if (autoscrollInProgress() && frame.eventHandler().mouseDownWasInSubframe()) {
if (Frame* subframe = frame.eventHandler().subframeForTargetNode(frame.eventHandler().mousePressNode()))
subframe->eventHandler().stopAutoscrollTimer(rendererIsBeingDestroyed);
return;
}
if (!rendererIsBeingDestroyed)
scrollable->stopAutoscroll();
#if ENABLE(PAN_SCROLLING)
if (panScrollInProgress()) {
FrameView& frameView = scrollable->view().frameView();
frameView.removePanScrollIcon();
frameView.setCursor(pointerCursor());
}
#endif
m_autoscrollType = NoAutoscroll;
#if ENABLE(PAN_SCROLLING)
// If we're not in the top frame we notify it that we are not doing a panScroll any more.
if (!frame.isMainFrame())
frame.mainFrame().eventHandler().didPanScrollStop();
#endif
}
void AutoscrollController::stopAutoscroll()
{
LayoutBox* scrollable = m_autoscrollLayoutObject;
m_autoscrollLayoutObject = nullptr;
if (!scrollable)
return;
scrollable->stopAutoscroll();
#if OS(WIN)
if (panScrollInProgress()) {
if (FrameView* view = scrollable->frame()->view()) {
view->setCursor(pointerCursor());
}
}
#endif
m_autoscrollType = NoAutoscroll;
}
void AutoscrollController::stopAutoscroll()
{
RenderBox* scrollable = m_autoscrollRenderer;
m_autoscrollRenderer = 0;
if (!scrollable)
return;
scrollable->stopAutoscroll();
#if OS(WIN)
if (panScrollInProgress()) {
if (FrameView* view = scrollable->frame()->view()) {
view->removePanScrollIcon();
view->setCursor(pointerCursor());
}
}
#endif
m_autoscrollType = NoAutoscroll;
}
// FIXME: This would get get better animation fidelity if it used the monotonicFrameBeginTime instead
// of WTF::currentTime().
void AutoscrollController::animate(double)
{
if (!m_autoscrollLayoutObject) {
stopAutoscroll();
return;
}
EventHandler& eventHandler = m_autoscrollLayoutObject->frame()->eventHandler();
switch (m_autoscrollType) {
case AutoscrollForDragAndDrop:
if (WTF::currentTime() - m_dragAndDropAutoscrollStartTime > autoscrollDelay)
m_autoscrollLayoutObject->autoscroll(m_dragAndDropAutoscrollReferencePosition);
break;
case AutoscrollForSelection:
if (!eventHandler.mousePressed()) {
stopAutoscroll();
return;
}
eventHandler.updateSelectionForMouseDrag();
m_autoscrollLayoutObject->autoscroll(eventHandler.lastKnownMousePosition());
break;
case NoAutoscroll:
break;
#if OS(WIN)
case AutoscrollForPanCanStop:
case AutoscrollForPan:
if (!panScrollInProgress()) {
stopAutoscroll();
return;
}
if (FrameView* view = m_autoscrollLayoutObject->frame()->view())
updatePanScrollState(view, eventHandler.lastKnownMousePosition());
m_autoscrollLayoutObject->panScroll(m_panScrollStartPos);
break;
#endif
}
if (m_autoscrollType != NoAutoscroll && m_autoscrollLayoutObject)
m_page->chromeClient().scheduleAnimation(m_autoscrollLayoutObject->frame()->view());
}
void AutoscrollController::autoscrollTimerFired(Timer<AutoscrollController>*)
{
if (!m_autoscrollRenderer) {
stopAutoscrollTimer();
return;
}
EventHandler* eventHandler = m_autoscrollRenderer->frame()->eventHandler();
switch (m_autoscrollType) {
case AutoscrollForDragAndDrop:
if (WTF::currentTime() - m_dragAndDropAutoscrollStartTime > autoscrollDelay)
m_autoscrollRenderer->autoscroll(m_dragAndDropAutoscrollReferencePosition);
break;
case AutoscrollForSelection:
if (!eventHandler->mousePressed()) {
stopAutoscrollTimer();
return;
}
eventHandler->updateSelectionForMouseDrag();
m_autoscrollRenderer->autoscroll(eventHandler->lastKnownMousePosition());
break;
case NoAutoscroll:
break;
#if ENABLE(PAN_SCROLLING)
case AutoscrollForPanCanStop:
case AutoscrollForPan:
if (!panScrollInProgress()) {
stopAutoscrollTimer();
return;
}
if (FrameView* view = m_autoscrollRenderer->frame()->view())
updatePanScrollState(view, eventHandler->lastKnownMousePosition());
m_autoscrollRenderer->panScroll(m_panScrollStartPos);
break;
#endif
}
}
