void LayoutScrollbar::setParent(Widget* parent) {
Scrollbar::setParent(parent);
if (!parent) {
// Destroy all of the scrollbar's LayoutBoxes.
updateScrollbarParts(true);
}
}
void RenderScrollbar::setEnabled(bool e)
{
bool wasEnabled = enabled();
Scrollbar::setEnabled(e);
if (wasEnabled != e)
updateScrollbarParts();
}
void RenderScrollbar::setParent(ScrollView* parent)
{
Scrollbar::setParent(parent);
if (!parent) {
// Destroy all of the scrollbar's RenderBoxes.
updateScrollbarParts(true);
}
}
void RenderScrollbar::paint(GraphicsContext* context, const IntRect& damageRect)
{
if (context->updatingControlTints()) {
updateScrollbarParts();
return;
}
Scrollbar::paint(context, damageRect);
}
RenderScrollbar::~RenderScrollbar()
{
if (!m_parts.isEmpty()) {
// When a scrollbar is detached from its parent (causing all parts removal) and
// ready to be destroyed, its destruction can be delayed because of RefPtr
// maintained in other classes such as EventHandler (m_lastScrollbarUnderMouse).
// Meanwhile, we can have a call to updateScrollbarPart which recreates the
// scrollbar part. So, we need to destroy these parts since we don't want them
// to call on a destroyed scrollbar. See webkit bug 68009.
updateScrollbarParts(true);
}
}
void RenderScrollbar::styleChanged()
{
updateScrollbarParts();
}
void LayoutScrollbar::styleChanged() {
updateScrollbarParts();
}