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/*
Copyright (C) 2006 Apple Computer, Inc.
2006 Nikolas Zimmermann <zimmermann@kde.org>
This file is part of the WebKit project
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 SVGDocumentExtensions_h
#define SVGDocumentExtensions_h
#if ENABLE(SVG)
#include <memory>
#include <wtf/Forward.h>
#include <wtf/HashSet.h>
#include <wtf/HashMap.h>
#include "FloatRect.h"
#include "StringHash.h"
//#include "StringImpl.h"
#include "AtomicString.h"
#include "xml/Document.h"
namespace DOM {
class EventListener;
}
namespace WebCore {
//class AtomicString;
//class Document;
//class EventListener;
//class Node;
//class String;
class SVGElement;
class SVGElementInstance;
class SVGStyledElement;
class SVGSVGElement;
class TimeScheduler;
class DOMStringHash
{
public:
static unsigned hash(DOMString key) { return qHash(key.implementation()); }
static bool equal(DOMString a, DOMString b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = false;
};
class SVGDocumentExtensions {
public:
SVGDocumentExtensions(Document*);
~SVGDocumentExtensions();
DOM::EventListener* createSVGEventListener(const DOMString& functionName, const DOMString& code, DOM::NodeImpl*);
void addTimeContainer(SVGSVGElement*);
void removeTimeContainer(SVGSVGElement*);
void startAnimations();
void pauseAnimations();
void unpauseAnimations();
void reportWarning(const String&);
void reportError(const String&);
private:
Document* m_doc; // weak reference
HashSet<SVGSVGElement*> m_timeContainers; // For SVG 1.2 support this will need to be made more general.
//HashMap<String, HashSet<SVGStyledElement*>*, DOMStringHash> m_pendingResources;
HashMap<SVGElement*, HashSet<SVGElementInstance*>*> m_elementInstances;
SVGDocumentExtensions(const SVGDocumentExtensions&);
SVGDocumentExtensions& operator=(const SVGDocumentExtensions&);
template<typename ValueType>
HashMap<const SVGElement*, HashMap<StringImpl*, ValueType>*>* baseValueMap() const
{
static HashMap<const SVGElement*, HashMap<StringImpl*, ValueType>*>* s_baseValueMap = new HashMap<const SVGElement*, HashMap<StringImpl*, ValueType>*>();
return s_baseValueMap;
}
public:
// This HashMap contains a list of pending resources. Pending resources, are such
// which are referenced by any object in the SVG document, but do NOT exist yet.
// For instance, dynamically build gradients / patterns / clippers...
void addPendingResource(const AtomicString& id, SVGStyledElement*);
bool isPendingResource(const AtomicString& id) const;
std::auto_ptr<HashSet<SVGStyledElement*> > removePendingResource(const AtomicString& id);
// This HashMap maps elements to their instances, when they are used by <use> elements.
// This is needed to synchronize the original element with the internally cloned one.
void mapInstanceToElement(SVGElementInstance*, SVGElement*);
void removeInstanceMapping(SVGElementInstance*, SVGElement*);
HashSet<SVGElementInstance*>* instancesForElement(SVGElement*) const;
// Used by the ANIMATED_PROPERTY_* macros
template<typename ValueType>
ValueType baseValue(const SVGElement* element, const AtomicString& propertyName) const
{
HashMap<StringImpl*, ValueType>* propertyMap = baseValueMap<ValueType>()->get(element);
if (propertyMap)
return propertyMap->get(propertyName.impl());
return 0;
}
template<typename ValueType>
void setBaseValue(const SVGElement* element, const AtomicString& propertyName, ValueType newValue)
{
HashMap<StringImpl*, ValueType>* propertyMap = baseValueMap<ValueType>()->get(element);
if (!propertyMap) {
propertyMap = new HashMap<StringImpl*, ValueType>();
baseValueMap<ValueType>()->set(element, propertyMap);
}
propertyMap->set(propertyName.impl(), newValue);
}
template<typename ValueType>
void removeBaseValue(const SVGElement* element, const AtomicString& propertyName)
{
HashMap<StringImpl*, ValueType>* propertyMap = baseValueMap<ValueType>()->get(element);
if (!propertyMap)
return;
propertyMap->remove(propertyName.impl());
}
template<typename ValueType>
bool hasBaseValue(const SVGElement* element, const AtomicString& propertyName) const
{
HashMap<StringImpl*, ValueType>* propertyMap = baseValueMap<ValueType>()->get(element);
if (propertyMap)
return propertyMap->contains(propertyName.impl());
return false;
}
};
// Special handling for WebCore::String
template<>
inline String SVGDocumentExtensions::baseValue<String>(const SVGElement* element, const AtomicString& propertyName) const
{
HashMap<StringImpl*, String>* propertyMap = baseValueMap<String>()->get(element);
if (propertyMap)
return propertyMap->get(propertyName.impl());
return String();
}
// Special handling for WebCore::FloatRect
template<>
inline FloatRect SVGDocumentExtensions::baseValue<FloatRect>(const SVGElement* element, const AtomicString& propertyName) const
{
HashMap<StringImpl*, FloatRect>* propertyMap = baseValueMap<FloatRect>()->get(element);
if (propertyMap)
return propertyMap->get(propertyName.impl());
return FloatRect();
}
// Special handling for booleans
template<>
inline bool SVGDocumentExtensions::baseValue<bool>(const SVGElement* element, const AtomicString& propertyName) const
{
HashMap<StringImpl*, bool>* propertyMap = baseValueMap<bool>()->get(element);
if (propertyMap)
return propertyMap->get(propertyName.impl());
return false;
}
// Special handling for doubles
template<>
inline double SVGDocumentExtensions::baseValue<double>(const SVGElement* element, const AtomicString& propertyName) const
{
HashMap<StringImpl*, double>* propertyMap = baseValueMap<double>()->get(element);
if (propertyMap)
return propertyMap->get(propertyName.impl());
return 0.0;
}
}
#endif // ENABLE(SVG)
#endif
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