AccessibilitySlider.cpp [plain text]
#include "config.h"
#include "AccessibilitySlider.h"
#include "AXObjectCache.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "RenderObject.h"
#include "RenderSlider.h"
namespace WebCore {
using namespace HTMLNames;
AccessibilitySlider::AccessibilitySlider(RenderObject* renderer)
: AccessibilityRenderObject(renderer)
{
}
PassRefPtr<AccessibilitySlider> AccessibilitySlider::create(RenderObject* renderer)
{
return adoptRef(new AccessibilitySlider(renderer));
}
const AccessibilityObject::AccessibilityChildrenVector& AccessibilitySlider::children()
{
if (!m_haveChildren)
addChildren();
return m_children;
}
AccessibilityOrientation AccessibilitySlider::orientation() const
{
if (!m_renderer)
return AccessibilityOrientationHorizontal;
RenderStyle* style = m_renderer->style();
if (!style)
return AccessibilityOrientationHorizontal;
ControlPart styleAppearance = style->appearance();
switch (styleAppearance) {
case SliderThumbHorizontalPart:
case SliderHorizontalPart:
case MediaSliderPart:
return AccessibilityOrientationHorizontal;
case SliderThumbVerticalPart:
case SliderVerticalPart:
case MediaVolumeSliderPart:
return AccessibilityOrientationVertical;
default:
return AccessibilityOrientationHorizontal;
}
}
void AccessibilitySlider::addChildren()
{
ASSERT(!m_haveChildren);
m_haveChildren = true;
AXObjectCache* cache = m_renderer->document()->axObjectCache();
AccessibilitySliderThumb* thumb = static_cast<AccessibilitySliderThumb*>(cache->getOrCreate(SliderThumbRole));
thumb->setParent(this);
if (thumb->accessibilityIsIgnored())
cache->remove(thumb->axObjectID());
else
m_children.append(thumb);
}
const AtomicString& AccessibilitySlider::getAttribute(const QualifiedName& attribute) const
{
return element()->getAttribute(attribute);
}
AccessibilityObject* AccessibilitySlider::elementAccessibilityHitTest(const IntPoint& point) const
{
if (m_children.size()) {
ASSERT(m_children.size() == 1);
if (m_children[0]->elementRect().contains(point))
return m_children[0].get();
}
return axObjectCache()->getOrCreate(m_renderer);
}
bool AccessibilitySlider::accessibilityIsIgnored() const
{
AccessibilityObjectInclusion decision = accessibilityIsIgnoredBase();
if (decision == IncludeObject)
return false;
if (decision == IgnoreObject)
return true;
return false;
}
float AccessibilitySlider::valueForRange() const
{
return element()->value().toFloat();
}
float AccessibilitySlider::maxValueForRange() const
{
return static_cast<float>(element()->maximum());
}
float AccessibilitySlider::minValueForRange() const
{
return static_cast<float>(element()->minimum());
}
void AccessibilitySlider::setValue(const String& value)
{
HTMLInputElement* input = element();
if (input->value() == value)
return;
input->setValue(value);
input->dispatchFormControlChangeEvent();
}
HTMLInputElement* AccessibilitySlider::element() const
{
return static_cast<HTMLInputElement*>(m_renderer->node());
}
AccessibilitySliderThumb::AccessibilitySliderThumb()
{
}
PassRefPtr<AccessibilitySliderThumb> AccessibilitySliderThumb::create()
{
return adoptRef(new AccessibilitySliderThumb());
}
IntRect AccessibilitySliderThumb::elementRect() const
{
if (!m_parent->renderer())
return IntRect();
IntRect intRect = toRenderSlider(m_parent->renderer())->thumbRect();
FloatQuad floatQuad = m_parent->renderer()->localToAbsoluteQuad(FloatRect(intRect));
return floatQuad.enclosingBoundingBox();
}
IntSize AccessibilitySliderThumb::size() const
{
return elementRect().size();
}
bool AccessibilitySliderThumb::accessibilityIsIgnored() const
{
AccessibilityObjectInclusion decision = accessibilityPlatformIncludesObject();
if (decision == IncludeObject)
return false;
if (decision == IgnoreObject)
return true;
return false;
}
}