AccessibilitySpinButton.cpp [plain text]
#include "config.h"
#include "AccessibilitySpinButton.h"
#include "AXObjectCache.h"
#include "RenderElement.h"
namespace WebCore {
Ref<AccessibilitySpinButton> AccessibilitySpinButton::create()
{
return adoptRef(*new AccessibilitySpinButton);
}
AccessibilitySpinButton::AccessibilitySpinButton()
: m_spinButtonElement(nullptr)
{
}
AccessibilitySpinButton::~AccessibilitySpinButton() = default;
AccessibilityObject* AccessibilitySpinButton::incrementButton()
{
if (!m_haveChildren)
addChildren();
if (!m_haveChildren)
return nullptr;
ASSERT(m_children.size() == 2);
return m_children[0].get();
}
AccessibilityObject* AccessibilitySpinButton::decrementButton()
{
if (!m_haveChildren)
addChildren();
if (!m_haveChildren)
return nullptr;
ASSERT(m_children.size() == 2);
return m_children[1].get();
}
LayoutRect AccessibilitySpinButton::elementRect() const
{
ASSERT(m_spinButtonElement);
if (!m_spinButtonElement || !m_spinButtonElement->renderer())
return LayoutRect();
Vector<FloatQuad> quads;
m_spinButtonElement->renderer()->absoluteFocusRingQuads(quads);
return boundingBoxForQuads(m_spinButtonElement->renderer(), quads);
}
void AccessibilitySpinButton::addChildren()
{
AXObjectCache* cache = axObjectCache();
if (!cache)
return;
m_haveChildren = true;
auto& incrementor = downcast<AccessibilitySpinButtonPart>(*cache->getOrCreate(AccessibilityRole::SpinButtonPart));
incrementor.setIsIncrementor(true);
incrementor.setParent(this);
m_children.append(&incrementor);
auto& decrementor = downcast<AccessibilitySpinButtonPart>(*cache->getOrCreate(AccessibilityRole::SpinButtonPart));
decrementor.setIsIncrementor(false);
decrementor.setParent(this);
m_children.append(&decrementor);
}
void AccessibilitySpinButton::step(int amount)
{
ASSERT(m_spinButtonElement);
if (!m_spinButtonElement)
return;
m_spinButtonElement->step(amount);
}
AccessibilitySpinButtonPart::AccessibilitySpinButtonPart()
: m_isIncrementor(false)
{
}
Ref<AccessibilitySpinButtonPart> AccessibilitySpinButtonPart::create()
{
return adoptRef(*new AccessibilitySpinButtonPart);
}
LayoutRect AccessibilitySpinButtonPart::elementRect() const
{
LayoutRect parentRect = parentObject()->elementRect();
if (m_isIncrementor)
parentRect.setHeight(parentRect.height() / 2);
else {
parentRect.setY(parentRect.y() + parentRect.height() / 2);
parentRect.setHeight(parentRect.height() / 2);
}
return parentRect;
}
bool AccessibilitySpinButtonPart::press()
{
if (!is<AccessibilitySpinButton>(m_parent))
return false;
auto& spinButton = downcast<AccessibilitySpinButton>(*m_parent);
if (m_isIncrementor)
spinButton.step(1);
else
spinButton.step(-1);
return true;
}
}