ENH: added the base class method ConnectionsSatisfied with a default

implementation. SuperElastix/SuperElastix#32

Modules/ComponentInterface/include/selxAccepting.hxx

@@ -114,7 +114,7 @@ bool
 Accepting< FirstInterface, RestInterfaces ... >::AreAllAccepted()
 {
   InterfaceAcceptor< FirstInterface > * acceptIF = (this);
-  if (acceptIF->isSet == false)
+  if (acceptIF->isSet() == false)
   {
     return false;
   }

Modules/ComponentInterface/include/selxComponentBase.h

@@ -66,6 +66,9 @@ public:
 
   //virtual const std::map< std::string, std::string >  TemplateProperties(); //TODO should be overridden
 
+  // Each component is checked if its required connections are made after all handshakes.
+  // SuperElastixComponent provides a default implementation which may be overridden by the component developer
+  virtual bool ConnectionsSatisfied() = 0 ;
   const std::string m_Name;
 };
 } // end namespace selx

Modules/ComponentInterface/include/selxInterfaceAcceptor.h

@@ -43,9 +43,12 @@ public:
 
   bool CanAcceptConnectionFrom( ComponentBase::ConstPointer );
 
+  bool isSet()
+  {
+    return m_isSet;
+  };
 private:
-
-  bool isSet;
+  bool m_isSet;
 };
 } //end namespace selx
 

Modules/ComponentInterface/include/selxInterfaceAcceptor.hxx

@@ -35,7 +35,7 @@ InterfaceAcceptor< InterfaceT >::Connect( ComponentBase::Pointer providerCompone
   }
   // connect value interfaces
   this->Set( providerInterface ); // due to the input argument being uniquely defined in the multiple inheritance tree, all versions of Set() are accessible at component level
-  this->isSet = true;
+  this->m_isSet = true;
   return 1;
 }
 

Modules/ComponentInterface/include/selxSuperElastixComponent.h

@@ -45,6 +45,8 @@ public:
 
   virtual int AcceptConnectionFrom( ComponentBase::Pointer );
 
+  virtual bool ConnectionsSatisfied() override;
+
 protected:
 
   virtual InterfaceStatus CanAcceptConnectionFrom( ComponentBase::ConstPointer, const InterfaceCriteriaType interfaceCriteria ) override;

Modules/ComponentInterface/include/selxSuperElastixComponent.hxx

@@ -47,6 +47,16 @@ SuperElastixComponent< AcceptingInterfaces, ProvidingInterfaces >
 {
   return AcceptingInterfaces::CanAcceptConnectionFrom( other, interfaceCriteria );
 }
+
+template< typename AcceptingInterfaces, typename ProvidingInterfaces >
+bool
+SuperElastixComponent< AcceptingInterfaces, ProvidingInterfaces >
+::ConnectionsSatisfied()
+{
+  // Default implementation. Components that allow unused connections should override this function.
+  return AcceptingInterfaces::AreAllAccepted();
+}
+
 } // end namespace selx
 
 #endif // #define selxSuperElastixComponent_hxx

Modules/ComponentInterface/src/selxComponentBase.cxx

@@ -31,7 +31,7 @@ ComponentBase::ComponentBase( const std::string & name ) : m_Name( name )
 {
 }
 
-
 //const std::map< std::string, std::string > ComponentBase::TemplateProperties()
 // { return{}; }
+
 } // end namespace selx