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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2016 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* 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
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_VALUESTACK
#define OSG_VALUESTACK 1
#include <osg/ValueMap>
namespace osg {
#define OSG_HAS_VALUESTACK
class OSG_EXPORT ValueStack : public osg::Object
{
public:
ValueStack();
ValueStack(const ValueStack& ps, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
META_Object(osg, ValueStack);
typedef std::vector< osg::ref_ptr<Object> > Values;
typedef std::map< osg::ref_ptr<const osg::Referenced>, Values> ValueStackMap;
void setValueStackMap(ValueStackMap& pm) { _valuesMap = pm; }
ValueStackMap& getValueStackMap() { return _valuesMap; }
const ValueStackMap& getValueStackMap() const { return _valuesMap; }
inline void push(const Referenced* key, Object* value)
{
_valuesMap[key].push_back(value);
}
template<typename T>
void push(const osg::Referenced* key, const T& value)
{
typedef TemplateValueObject<T> UserValueObject;
_valuesMap[key].push_back(new UserValueObject(value));
}
inline void pop(const Referenced* key)
{
_valuesMap[key].pop_back();
}
inline void push(ValueMap* valueMap)
{
if (valueMap)
{
ValueMap::KeyValueMap& keyValueMap = valueMap->getKeyValueMap();
for(ValueMap::KeyValueMap::iterator itr = keyValueMap.begin();
itr != keyValueMap.end();
++itr)
{
push(itr->first.get(), itr->second.get());
}
}
}
inline void pop(ValueMap* valueMap)
{
if (valueMap)
{
ValueMap::KeyValueMap& keyValueMap = valueMap->getKeyValueMap();
for(ValueMap::KeyValueMap::iterator itr = keyValueMap.begin();
itr != keyValueMap.end();
++itr)
{
pop(itr->first.get());
}
}
}
inline osg::Object* getValue(const osg::Referenced* key)
{
ValueStackMap::iterator itr = _valuesMap.find(key);
if (itr==_valuesMap.end()) return 0;
Values& values = itr->second;
if (values.empty()) return 0;
return values.back().get();
}
inline const osg::Object* getValue(const osg::Referenced* key) const
{
ValueStackMap::const_iterator itr = _valuesMap.find(key);
if (itr==_valuesMap.end()) return 0;
const Values& values = itr->second;
if (values.empty()) return 0;
return values.back().get();
}
template<typename T>
T* getValueOfType(const osg::Referenced* key)
{
Object* object = getValue(key);
return (object && typeid(*object)==typeid(T)) ? static_cast<T*>(object) : 0;
}
template<typename T>
const T* getValueOfType(const osg::Referenced* key) const
{
const Object* object = getValue(key);
return (object && typeid(*object)==typeid(T)) ? static_cast<const T*>(object) : 0;
}
template<typename T>
bool getValue(const osg::Referenced* key, T& value)
{
typedef TemplateValueObject<T> UserValueObject;
UserValueObject* uvo = getValueOfType<UserValueObject>(key);
if (uvo)
{
value = uvo->getValue();
return true;
}
else
{
return false;
}
}
template<typename T>
bool getValue(const osg::Referenced* key, T& value) const
{
typedef TemplateValueObject<T> UserValueObject;
const UserValueObject* uvo = getValueOfType<UserValueObject>(key);
if (uvo)
{
value = uvo->getValue();
return true;
}
else
{
return false;
}
}
protected:
virtual ~ValueStack();
ValueStackMap _valuesMap;
};
}
#endif
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