void ScrollView::scrollRectIntoViewRecursively(const IntRect& r)
{
#if PLATFORM(ANDROID)
if (platformProhibitsScrolling())
return;
#endif
// FIXME: This method is not transform-aware. It should just be moved to FrameView so that an accurate
// position for the child view can be determined.
IntRect rect = r;
ScrollView* view = this;
while (view) {
if (view->prohibitsScrolling()) // Allow the views to scroll into view recursively until we hit one that prohibits scrolling.
return;
view->setScrollPosition(rect.location());
rect.move(view->x() - view->scrollOffset().width(), view->y() - view->scrollOffset().height());
if (view->parent())
rect.intersect(view->frameRect());
view = view->parent();
}
// We may be embedded inside some containing platform scroll view that we don't manage. This is the case
// in Mail.app on OS X, for example, where the WebKit view for message bodies is inside a Cocoa NSScrollView
// that contains both it and message headers. Let the HostWindow know about this scroll so that it can pass the message
// on up the view chain.
// This rect is not clamped, since Mail actually relies on receiving an unclamped rect with negative coordinates in order to
// expose the headers.
if (hostWindow())
hostWindow()->scrollRectIntoView(rect, this);
}
