80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
// Base class for elements of property controlled subsystems
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//
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// Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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#ifndef SG_PROPERTY_BASED_ELEMENT_HXX_
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#define SG_PROPERTY_BASED_ELEMENT_HXX_
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#include <simgear/props/props.hxx>
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#include <boost/call_traits.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/weak_ptr.hpp>
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namespace simgear
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{
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class PropertyBasedElement;
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typedef boost::shared_ptr<PropertyBasedElement> PropertyBasedElementPtr;
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typedef boost::weak_ptr<PropertyBasedElement> PropertyBasedElementWeakPtr;
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/**
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* Base class for a property controlled element
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*/
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class PropertyBasedElement:
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public SGPropertyChangeListener
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{
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public:
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PropertyBasedElement(SGPropertyNode* node);
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virtual ~PropertyBasedElement();
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virtual void update(double delta_time_sec) = 0;
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SGConstPropertyNode_ptr getProps() const;
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SGPropertyNode_ptr getProps();
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template<class T>
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void set( const std::string& name,
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typename boost::call_traits<T>::param_type val )
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{
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setValue(_node->getNode(name, true), val);
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}
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template<class T>
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T get( const std::string& name,
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typename boost::call_traits<T>::param_type def = T() )
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{
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SGPropertyNode const* child = _node->getNode(name);
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if( !child )
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return def;
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return getValue<T>(child);
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}
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virtual void setSelf(const PropertyBasedElementPtr& self);
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protected:
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SGPropertyNode_ptr _node;
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PropertyBasedElementWeakPtr _self;
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};
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} // namespace simgear
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#endif /* SG_PROPERTY_BASED_ELEMENT_HXX_ */
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