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/*
* Copyright (C) 2010 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "modules/accessibility/AXMenuListOption.h"
#include "modules/accessibility/AXMenuListPopup.h"
#include "modules/accessibility/AXObjectCacheImpl.h"
namespace blink {
using namespace HTMLNames;
AXMenuListOption::AXMenuListOption(HTMLOptionElement* element, AXObjectCacheImpl& axObjectCache)
: AXMockObject(axObjectCache)
, m_element(element)
{
}
AXMenuListOption::~AXMenuListOption()
{
ASSERT(!m_element);
}
void AXMenuListOption::detach()
{
m_element = nullptr;
AXMockObject::detach();
}
Element* AXMenuListOption::actionElement() const
{
return m_element;
}
bool AXMenuListOption::isEnabled() const
{
// isDisabledFormControl() returns true if the parent <select> element is disabled,
// which we don't want.
return m_element && !m_element->ownElementDisabled();
}
bool AXMenuListOption::isVisible() const
{
if (!m_parent)
return false;
// In a single-option select with the popup collapsed, only the selected
// item is considered visible.
return !m_parent->isOffScreen() || isSelected();
}
bool AXMenuListOption::isOffScreen() const
{
// Invisible list options are considered to be offscreen.
return !isVisible();
}
bool AXMenuListOption::isSelected() const
{
AXMenuListPopup* parent = static_cast<AXMenuListPopup*>(parentObject());
if (parent && !parent->isOffScreen())
return parent->activeChild() == this;
return m_element && m_element->selected();
}
void AXMenuListOption::setSelected(bool b)
{
if (!m_element || !canSetSelectedAttribute())
return;
m_element->setSelected(b);
}
bool AXMenuListOption::canSetSelectedAttribute() const
{
return isEnabled();
}
bool AXMenuListOption::computeAccessibilityIsIgnored(IgnoredReasons* ignoredReasons) const
{
return accessibilityIsIgnoredByDefault(ignoredReasons);
}
LayoutRect AXMenuListOption::elementRect() const
{
AXObject* parent = parentObject();
if (!parent)
return LayoutRect();
ASSERT(parent->isMenuListPopup());
AXObject* grandparent = parent->parentObject();
if (!grandparent)
return LayoutRect();
ASSERT(grandparent->isMenuList());
return grandparent->elementRect();
}
String AXMenuListOption::textAlternative(bool recursive, bool inAriaLabelledByTraversal, AXObjectSet& visited, AXNameFrom& nameFrom, AXRelatedObjectVector* relatedObjects, NameSources* nameSources) const
{
// If nameSources is non-null, relatedObjects is used in filling it in, so it must be non-null as well.
if (nameSources)
ASSERT(relatedObjects);
if (!node())
return String();
bool foundTextAlternative = false;
String textAlternative = ariaTextAlternative(recursive, inAriaLabelledByTraversal, visited, nameFrom, relatedObjects, nameSources, &foundTextAlternative);
if (foundTextAlternative && !nameSources)
return textAlternative;
nameFrom = AXNameFromContents;
textAlternative = m_element->displayLabel();
if (nameSources) {
nameSources->append(NameSource(foundTextAlternative));
nameSources->last().type = nameFrom;
nameSources->last().text = textAlternative;
foundTextAlternative = true;
}
return textAlternative;
}
DEFINE_TRACE(AXMenuListOption)
{
visitor->trace(m_element);
AXMockObject::trace(visitor);
}
} // namespace blink