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/*
* Copyright (C) 2016 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "config.h"
#include "AccessibilityLabel.h"
namespace WebCore {
using namespace HTMLNames;
AccessibilityLabel::AccessibilityLabel(AXID axID, RenderObject& renderer)
: AccessibilityRenderObject(axID, renderer)
{
}
AccessibilityLabel::~AccessibilityLabel() = default;
Ref<AccessibilityLabel> AccessibilityLabel::create(AXID axID, RenderObject& renderer)
{
return adoptRef(*new AccessibilityLabel(axID, renderer));
}
String AccessibilityLabel::stringValue() const
{
if (containsOnlyStaticText())
return textUnderElement();
return AccessibilityNodeObject::stringValue();
}
static bool childrenContainOnlyStaticText(const AccessibilityObject::AccessibilityChildrenVector& children)
{
if (children.isEmpty())
return false;
for (const auto& child : children) {
if (child->roleValue() == AccessibilityRole::StaticText)
continue;
if (child->isGroup()) {
if (!childrenContainOnlyStaticText(child->unignoredChildren()))
return false;
} else
return false;
}
return true;
}
bool AccessibilityLabel::containsOnlyStaticText() const
{
// m_containsOnlyStaticTextDirty is set (if necessary) by addChildren(), so update our children before checking the flag.
const_cast<AccessibilityLabel*>(this)->updateChildrenIfNecessary();
if (m_containsOnlyStaticTextDirty) {
m_containsOnlyStaticTextDirty = false;
m_containsOnlyStaticText = childrenContainOnlyStaticText(const_cast<AccessibilityLabel*>(this)->unignoredChildren());
}
return m_containsOnlyStaticText;
}
void AccessibilityLabel::addChildren()
{
AccessibilityRenderObject::addChildren();
m_containsOnlyStaticTextDirty = true;
}
void AccessibilityLabel::clearChildren()
{
AccessibilityRenderObject::clearChildren();
m_containsOnlyStaticText = false;
m_containsOnlyStaticTextDirty = false;
}
} // namespace WebCore
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