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/*
* Copyright (C) 2011 Google 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 "HTMLContentElement.h"
#include "ContentSelectorQuery.h"
#include "HTMLContentSelector.h"
#include "HTMLNames.h"
#include "QualifiedName.h"
#include "ShadowRoot.h"
#include "ShadowRootList.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
using HTMLNames::selectAttr;
static const QualifiedName& contentTagName()
{
#if ENABLE(SHADOW_DOM)
return HTMLNames::contentTag;
#else
DEFINE_STATIC_LOCAL(QualifiedName, tagName, (nullAtom, "webkitShadowContent", HTMLNames::divTag.namespaceURI()));
return tagName;
#endif
}
PassRefPtr<HTMLContentElement> HTMLContentElement::create(Document* document)
{
return adoptRef(new HTMLContentElement(contentTagName(), document));
}
PassRefPtr<HTMLContentElement> HTMLContentElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new HTMLContentElement(tagName, document));
}
HTMLContentElement::HTMLContentElement(const QualifiedName& name, Document* document)
: InsertionPoint(name, document)
{
}
HTMLContentElement::~HTMLContentElement()
{
}
void HTMLContentElement::attach()
{
ShadowRoot* root = toShadowRoot(shadowTreeRootNode());
// Before calling StyledElement::attach, selector must be calculated.
if (root) {
HTMLContentSelector* selector = root->list()->ensureSelector();
selector->unselect(&m_selections);
selector->select(this, &m_selections);
}
InsertionPoint::attach();
if (root) {
for (HTMLContentSelection* selection = m_selections.first(); selection; selection = selection->next())
selection->node()->attach();
}
}
void HTMLContentElement::detach()
{
if (ShadowRoot* root = toShadowRoot(shadowTreeRootNode())) {
if (HTMLContentSelector* selector = root->list()->selector())
selector->unselect(&m_selections);
// When content element is detached, shadow tree should be recreated to re-calculate selector for
// other content elements.
root->list()->setNeedsReattachHostChildrenAndShadow();
}
ASSERT(m_selections.isEmpty());
InsertionPoint::detach();
}
const AtomicString& HTMLContentElement::select() const
{
return getAttribute(selectAttr);
}
bool HTMLContentElement::isSelectValid() const
{
ContentSelectorQuery query(this);
return query.isValidSelector();
}
void HTMLContentElement::setSelect(const AtomicString& selectValue)
{
setAttribute(selectAttr, selectValue);
}
void HTMLContentElement::parseAttribute(Attribute* attr)
{
if (attr->name() == selectAttr) {
if (ShadowRoot* root = toShadowRoot(shadowTreeRootNode()))
root->list()->setNeedsReattachHostChildrenAndShadow();
} else
InsertionPoint::parseAttribute(attr);
}
}
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