--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/svg/SVGElementInstance.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,166 @@
+/*
+    Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+    Copyright (C) Research In Motion Limited 2010. 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* useElement, PassRefPtr<SVGElement> originalElement)
+    : m_useElement(useElement)
+    , m_element(originalElement)
+    , m_previousSibling(0)
+    , m_nextSibling(0)
+    , m_firstChild(0)
+    , m_lastChild(0)
+{
+    ASSERT(m_useElement);
+    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);
+        (*it)->correspondingUseElement()->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> prpEvent)
+{
+    RefPtr<EventTarget> protect = this;
+    RefPtr<Event> event = prpEvent;
+
+    event->setTarget(this);
+
+    SVGElement* element = shadowTreeElement();
+    if (!element)
+        return false;
+
+    RefPtr<FrameView> view = element->document()->view();
+    return element->dispatchGenericEvent(event.release());
+}
+
+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