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X3DComponentCreator.h

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00001 
00002 //                            X3DComponentCreator.h                           //
00004 
00005 #ifndef X3DCOMPONENTCREATOR_H
00006 #define X3DCOMPONENTCREATOR_H
00007 
00008 #include "X3DComponent.h"
00009 #include "CreationFunction.h"
00010 
00011 namespace X3DTK {
00012 namespace X3D {
00013 
00015 
00016 class X3DComponentCreator : public X3DComponent
00017 {
00018 public:
00020   X3DComponentCreator();
00022   virtual ~X3DComponentCreator() = 0;
00023   
00025   CreationFunction *getCreationFunctionOf(const SFString &name) const;
00027   inline CreationDict getCreationDict() const {return _creationDict;};
00028   
00030   bool contains(const SFString &name) const;
00031   
00032 protected: 
00034   template<class T> void defineNewNode()
00035   {
00036     Type::beginFunctionDefinition();
00037     
00038     SFNode t = create<T>();
00039     SFString name = t->getTypeName();
00040     Component *TComponent = t->getType()->getComponent();
00041     //checking if the node belongs to the component.
00042     if (TComponent != component)
00043     {
00044       SFString sg1, sg2;
00045       if (component->getSceneGraphName() != "")
00046         sg1 = " of the " + component->getSceneGraphName() + " scene graph";
00047       if (t->getType()->getSceneGraphName() != "")
00048         sg1 = " of the " + t->getType()->getSceneGraphName() + " scene graph";  
00049 
00050       std::cerr << "warning: defineNewNode for " << name << " which doesn't belong to the " << component->getName() << " component" << sg1 << "," << std::endl;
00051       std::cerr << "         but to the " << t->getType()->getComponentName() << " component" << sg2 << std::endl;    
00052     }         
00053     else
00054       defineNewCreationFunction(t->getTypeName(), &X3DComponentCreator::create<T>);
00055     
00056     delete t;       
00057     Type::endFunctionDefinition();
00058   };
00059   
00060 private:
00061   CreationDict _creationDict;
00062 
00063   template<class T>
00064   SFNode create() const {return new T();};
00065 
00067   template<class C> void defineNewCreationFunction(const SFString &name, X3D::SFNode (C::*ptrF)() const)
00068   {
00069     CreationFunction *CF = new CreationFunction(reinterpret_cast<ptrToCreationFunction>(ptrF), this);
00070     _creationDict.insert(std::pair<SFString, CreationFunction *>(name, CF));
00071   };
00072 };
00073 
00074 }
00075 }
00076 
00077 #endif

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