Source/WebCore/accessibility/AccessibilityTreeItem.cpp

/*
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#include "config.h"
#include "AccessibilityTreeItem.h"

#include "AXObjectCache.h"
#include "HTMLNames.h"

namespace WebCore {
    
using namespace HTMLNames;
    
AccessibilityTreeItem::AccessibilityTreeItem(RenderObject* renderer)
    : AccessibilityRenderObject(renderer)
{
}
    
AccessibilityTreeItem::~AccessibilityTreeItem() = default;
    
Ref<AccessibilityTreeItem> AccessibilityTreeItem::create(RenderObject* renderer)
{
    return adoptRef(*new AccessibilityTreeItem(renderer));
}

bool AccessibilityTreeItem::supportsCheckedState() const
{
    return hasAttribute(aria_checkedAttr);
}

AccessibilityRole AccessibilityTreeItem::determineAccessibilityRole()
{
    
    // Walk the parent chain looking for a parent that is a tree. A treeitem is
    // only considered valid if it is in a tree.
    AccessibilityObject* parent = nullptr;
    for (parent = parentObject(); parent && !parent->isTree(); parent = parent->parentObject()) { }
    m_isTreeItemValid = parent;

    return AccessibilityRenderObject::determineAccessibilityRole();
}
    
} // namespace WebCore