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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2017 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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 "config.h"
#include "PseudoElement.h"
#include "ContentData.h"
#include "InspectorInstrumentation.h"
#include "KeyframeEffectStack.h"
#include "RenderElement.h"
#include "RenderImage.h"
#include "RenderQuote.h"
#include "RenderStyleInlines.h"
#include "StyleResolver.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(PseudoElement);
const QualifiedName& pseudoElementTagName()
{
static NeverDestroyed<QualifiedName> name(nullAtom(), "<pseudo>"_s, nullAtom());
return name;
}
PseudoElement::PseudoElement(Element& host, PseudoId pseudoId)
: Element(pseudoElementTagName(), host.document(), CreatePseudoElement)
, m_hostElement(host)
, m_pseudoId(pseudoId)
{
ASSERT(pseudoId == PseudoId::Before || pseudoId == PseudoId::After);
}
PseudoElement::~PseudoElement()
{
ASSERT(!m_hostElement);
}
Ref<PseudoElement> PseudoElement::create(Element& host, PseudoId pseudoId)
{
auto pseudoElement = adoptRef(*new PseudoElement(host, pseudoId));
InspectorInstrumentation::pseudoElementCreated(host.document().page(), pseudoElement.get());
return pseudoElement;
}
void PseudoElement::clearHostElement()
{
InspectorInstrumentation::pseudoElementDestroyed(document().page(), *this);
Styleable::fromElement(*this).elementWasRemoved();
m_hostElement = nullptr;
}
bool PseudoElement::rendererIsNeeded(const RenderStyle& style)
{
if (pseudoElementRendererIsNeeded(&style))
return true;
if (RefPtr element = m_hostElement.get()) {
if (auto* stack = element->keyframeEffectStack(pseudoId()))
return stack->requiresPseudoElement();
}
return false;
}
} // namespace
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