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/*
* Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
* Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#if ENABLE(SVG)
#include "SVGElementInstance.h"
#include "ContainerNodeAlgorithms.h"
#include "Event.h"
#include "EventException.h"
#include "EventListener.h"
#include "EventNames.h"
#include "FrameView.h"
#include "SVGElementInstanceList.h"
#include "SVGUseElement.h"
#include <wtf/RefCountedLeakCounter.h>
namespace WebCore {
#ifndef NDEBUG
static WTF::RefCountedLeakCounter instanceCounter("WebCoreSVGElementInstance");
#endif
SVGElementInstance::SVGElementInstance(SVGUseElement* correspondingUseElement, SVGUseElement* directUseElement, PassRefPtr<SVGElement> originalElement)
: m_correspondingUseElement(correspondingUseElement)
, m_directUseElement(directUseElement)
, m_element(originalElement)
, m_previousSibling(0)
, m_nextSibling(0)
, m_firstChild(0)
, m_lastChild(0)
{
ASSERT(m_correspondingUseElement);
ASSERT(m_element);
// Register as instance for passed element.
m_element->mapInstanceToElement(this);
#ifndef NDEBUG
instanceCounter.increment();
#endif
}
SVGElementInstance::~SVGElementInstance()
{
#ifndef NDEBUG
instanceCounter.decrement();
#endif
// Deregister as instance for passed element.
m_element->removeInstanceMapping(this);
removeAllChildrenInContainer<SVGElementInstance, SVGElementInstance>(this);
}
PassRefPtr<SVGElementInstanceList> SVGElementInstance::childNodes()
{
return SVGElementInstanceList::create(this);
}
void SVGElementInstance::setShadowTreeElement(SVGElement* element)
{
ASSERT(element);
m_shadowTreeElement = element;
}
void SVGElementInstance::appendChild(PassRefPtr<SVGElementInstance> child)
{
appendChildToContainer<SVGElementInstance, SVGElementInstance>(child.get(), this);
}
void SVGElementInstance::invalidateAllInstancesOfElement(SVGElement* element)
{
if (!element || !element->inDocument())
return;
if (element->isStyled() && static_cast<SVGStyledElement*>(element)->instanceUpdatesBlocked())
return;
const HashSet<SVGElementInstance*>& set = element->instancesForElement();
if (set.isEmpty())
return;
// Mark all use elements referencing 'element' for rebuilding
const HashSet<SVGElementInstance*>::const_iterator end = set.end();
for (HashSet<SVGElementInstance*>::const_iterator it = set.begin(); it != end; ++it) {
ASSERT((*it)->correspondingElement() == element);
if (SVGUseElement* element = (*it)->correspondingUseElement())
element->invalidateShadowTree();
}
// Be sure to rebuild use trees, if needed
element->document()->updateLayoutIgnorePendingStylesheets();
}
ScriptExecutionContext* SVGElementInstance::scriptExecutionContext() const
{
return m_element->document();
}
bool SVGElementInstance::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
{
return m_element->addEventListener(eventType, listener, useCapture);
}
bool SVGElementInstance::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
{
return m_element->removeEventListener(eventType, listener, useCapture);
}
void SVGElementInstance::removeAllEventListeners()
{
m_element->removeAllEventListeners();
}
bool SVGElementInstance::dispatchEvent(PassRefPtr<Event> event)
{
SVGElement* element = shadowTreeElement();
if (!element)
return false;
return element->dispatchEvent(event);
}
EventTargetData* SVGElementInstance::eventTargetData()
{
// EventTarget would use these methods if we were actually using its add/removeEventListener logic.
// As we're forwarding those calls to the correspondingElement(), no one should ever call this function.
ASSERT_NOT_REACHED();
return 0;
}
EventTargetData* SVGElementInstance::ensureEventTargetData()
{
// EventTarget would use these methods if we were actually using its add/removeEventListener logic.
// As we're forwarding those calls to the correspondingElement(), no one should ever call this function.
ASSERT_NOT_REACHED();
return 0;
}
}
#endif
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