forked from KolibriOS/kolibrios
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
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#ifndef SIGCXX_HANDLE_H
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#define SIGCXX_HANDLE_H
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#include <sigc++config.h>
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#ifdef SIGC_CXX_NAMESPACES
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namespace SigC
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{
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#endif
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// Signiture for Handles
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template <class Obj,class Scope_>
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class Handle
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{
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protected:
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Scope_ scope_;
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public:
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// access
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Obj* obj()
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{
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return static_cast<Obj*>(scope_.cache());
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}
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Obj* obj() const
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{
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return static_cast<Obj*>(scope_.cache());
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}
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bool connected() const
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{return (scope_.object()!=0);}
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operator Obj*()
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{return (obj());}
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operator Obj*() const
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{return (obj());}
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Obj& operator*() const
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{return *(obj());}
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Obj* operator->() const
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{return (obj());}
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Scope_& scope()
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{return scope_;}
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const Scope_& scope() const
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{return scope_;}
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void disconnect()
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{scope_.disconnect(0);}
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// copy
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Handle& operator =(Obj* obj)
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{scope_.set(obj,obj,true); return *this;}
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Handle& operator =(Obj& obj)
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{scope_.set(&obj,&obj,false); return *this;}
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#ifndef SIGC_CXX_TEMPLATE_CCTOR
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Handle& operator =(const Handle& handle)
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{
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Obj *o=handle.obj();
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scope_.set(o,o,false);
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return *this;
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}
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#endif
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template <class Obj2,class Scope2>
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Handle& operator = (const Handle<Obj2,Scope2>& handle)
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{
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Obj *o=handle.obj();
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scope_.set(o,o,false);
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return *this;
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}
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// construct
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Handle():scope_() {}
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Handle(Obj *obj):scope_() {scope_.set(obj,obj,true);}
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Handle(Obj &obj):scope_() {scope_.set(&obj,&obj,false);}
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#ifndef SIGC_CXX_TEMPLATE_CCTOR
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Handle(const Handle& handle)
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:scope_()
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{
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Obj *o=handle.obj();
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scope_.set(o,o,false);
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}
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#endif
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template <class Obj2,class Scope2>
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Handle(const Handle<Obj2,Scope2>& handle)
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:scope_()
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{
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Obj *o=handle.obj();
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scope_.set(o,o,false);
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}
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};
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#define HANDLE_CTORS(X,T,P) \
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public: \
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X(T *t):Handle<T,P>(t) {} \
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X(T &t):Handle<T,P>(t) {} \
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template <class T2,class P2> \
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X(const Handle<T2,P2> &h):Handle<T,P>(h) {} \
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X& operator =(T *t) \
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{return Handle<T,P>::operator=(t);} \
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X& operator =(T &t) \
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{return Handle<T,P>::operator=(t);} \
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template <class T2,class P2> \
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X& operator =(const Handle<T2,P2> &t) \
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{return Handle<T,P>::operator=(t);}
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//template <class T>
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// class Ref:public Handle<T,Scopes::RefCount>
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// {
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// HANDLE_CTORS(Ref,T,Scopes::RefCount)
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// };
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#ifdef SIGC_CXX_NAMESPACES
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} // namespace
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#endif
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#endif
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