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/*
* Copyright (C) Research In Motion Limited 2009-2010. 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.
*
*/
#ifndef RenderSVGResource_h
#define RenderSVGResource_h
#if ENABLE(SVG)
#include "FloatRect.h"
#include "RenderSVGHiddenContainer.h"
namespace WebCore {
enum RenderSVGResourceType {
MaskerResourceType,
MarkerResourceType,
FilterResourceType,
ClipperResourceType
};
class RenderSVGResource : public RenderSVGHiddenContainer {
public:
RenderSVGResource(SVGStyledElement* node)
: RenderSVGHiddenContainer(node)
, m_id(node->getIDAttribute())
{
ASSERT(node->document());
node->document()->accessSVGExtensions()->addResource(m_id, this);
}
virtual ~RenderSVGResource()
{
ASSERT(node());
ASSERT(node()->document());
node()->document()->accessSVGExtensions()->removeResource(m_id);
}
void idChanged()
{
ASSERT(node());
ASSERT(node()->document());
SVGDocumentExtensions* extensions = node()->document()->accessSVGExtensions();
// Remove old id, that is guaranteed to be present in cache
extensions->removeResource(m_id);
m_id = static_cast<Element*>(node())->getIDAttribute();
// It's possible that an element is referencing us with the new id, and has to be notified that we're existing now
if (extensions->isPendingResource(m_id)) {
OwnPtr<HashSet<SVGStyledElement*> > clients(extensions->removePendingResource(m_id));
if (clients->isEmpty())
return;
HashSet<SVGStyledElement*>::const_iterator it = clients->begin();
const HashSet<SVGStyledElement*>::const_iterator end = clients->end();
for (; it != end; ++it) {
if (RenderObject* renderer = (*it)->renderer())
renderer->setNeedsLayout(true);
}
}
// Recache us with the new id
extensions->addResource(m_id, this);
}
template<class Renderer>
Renderer* cast()
{
if (Renderer::s_resourceType == resourceType())
return static_cast<Renderer*>(this);
return 0;
}
virtual RenderSVGResource* toRenderSVGResource() { return this; }
virtual bool isSVGResource() const { return true; }
virtual bool drawsContents() { return false; }
virtual void invalidateClients() = 0;
virtual void invalidateClient(RenderObject*) = 0;
virtual bool applyResource(RenderObject*, GraphicsContext*&) = 0;
virtual void postApplyResource(RenderObject*, GraphicsContext*&) { }
virtual FloatRect resourceBoundingBox(const FloatRect&) const = 0;
virtual RenderSVGResourceType resourceType() const = 0;
private:
AtomicString m_id;
};
template<typename Renderer>
Renderer* getRenderSVGResourceById(Document* document, const AtomicString& id)
{
if (id.isEmpty())
return 0;
if (RenderSVGResource* renderResource = document->accessSVGExtensions()->resourceById(id))
return renderResource->cast<Renderer>();
return 0;
}
}
#endif
#endif
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