AccessibilityListBox.cpp [plain text]
#include "config.h"
#include "AccessibilityListBox.h"
#include "AXObjectCache.h"
#include "AccessibilityListBoxOption.h"
#include "HTMLNames.h"
#include "HTMLSelectElement.h"
#include "HitTestResult.h"
#include "RenderListBox.h"
#include "RenderObject.h"
namespace WebCore {
using namespace HTMLNames;
AccessibilityListBox::AccessibilityListBox(RenderObject* renderer)
: AccessibilityRenderObject(renderer)
{
}
AccessibilityListBox::~AccessibilityListBox() = default;
Ref<AccessibilityListBox> AccessibilityListBox::create(RenderObject* renderer)
{
return adoptRef(*new AccessibilityListBox(renderer));
}
bool AccessibilityListBox::canSetSelectedChildrenAttribute() const
{
Node* selectNode = m_renderer->node();
if (!selectNode)
return false;
return !downcast<HTMLSelectElement>(*selectNode).isDisabledFormControl();
}
void AccessibilityListBox::addChildren()
{
Node* selectNode = m_renderer->node();
if (!selectNode)
return;
m_haveChildren = true;
for (const auto& listItem : downcast<HTMLSelectElement>(*selectNode).listItems()) {
AccessibilityObject* listOption = listBoxOptionAccessibilityObject(listItem);
if (listOption && !listOption->accessibilityIsIgnored())
m_children.append(listOption);
}
}
void AccessibilityListBox::setSelectedChildren(const AccessibilityChildrenVector& children)
{
if (!canSetSelectedChildrenAttribute())
return;
Node* selectNode = m_renderer->node();
if (!selectNode)
return;
for (const auto& child : m_children) {
auto& listBoxOption = downcast<AccessibilityListBoxOption>(*child);
if (listBoxOption.isSelected())
listBoxOption.setSelected(false);
}
for (const auto& obj : children) {
if (obj->roleValue() != AccessibilityRole::ListBoxOption)
continue;
downcast<AccessibilityListBoxOption>(*obj).setSelected(true);
}
}
void AccessibilityListBox::selectedChildren(AccessibilityChildrenVector& result)
{
ASSERT(result.isEmpty());
if (!hasChildren())
addChildren();
for (const auto& child : m_children) {
if (downcast<AccessibilityListBoxOption>(*child).isSelected())
result.append(child.get());
}
}
void AccessibilityListBox::visibleChildren(AccessibilityChildrenVector& result)
{
ASSERT(result.isEmpty());
if (!hasChildren())
addChildren();
unsigned length = m_children.size();
for (unsigned i = 0; i < length; i++) {
if (downcast<RenderListBox>(*m_renderer).listIndexIsVisible(i))
result.append(m_children[i]);
}
}
AccessibilityObject* AccessibilityListBox::listBoxOptionAccessibilityObject(HTMLElement* element) const
{
if (!element || element->hasTagName(hrTag))
return nullptr;
AccessibilityObject& listBoxObject = *m_renderer->document().axObjectCache()->getOrCreate(AccessibilityRole::ListBoxOption);
downcast<AccessibilityListBoxOption>(listBoxObject).setHTMLElement(element);
return &listBoxObject;
}
AXCoreObject* AccessibilityListBox::elementAccessibilityHitTest(const IntPoint& point) const
{
if (!m_renderer)
return nullptr;
Node* node = m_renderer->node();
if (!node)
return nullptr;
LayoutRect parentRect = boundingBoxRect();
AXCoreObject* listBoxOption = nullptr;
unsigned length = m_children.size();
for (unsigned i = 0; i < length; ++i) {
LayoutRect rect = downcast<RenderListBox>(*m_renderer).itemBoundingBoxRect(parentRect.location(), i);
if (rect.contains(point)) {
listBoxOption = m_children[i].get();
break;
}
}
if (listBoxOption && !listBoxOption->accessibilityIsIgnored())
return listBoxOption;
return axObjectCache()->getOrCreate(renderer());
}
}