<@doc hierarchy="GMLDOM" also="@Outport">
   An object representing a reference to a Configurable element that resides within the same unit.

   <copyright>(c) SAP AG 2004. All rights reserved.</copyright>
</doc@>

#ALIAS[g=core.svg:GmlDrawing]
#INCLUDE[svg:defs.inc]

///////////////////////////////////////////////////////////////////////
// CLASS HEADER

Class DirectPlug inherit Plug;

metadata icon16 = '#URL[~res:skins.neutral.symbols.outplug16.gif]';

attach svg:QPin override {
   symbol:  #[SVG_CIRCLE_PIN|SVG_NOTEXT]
};

override virtual readonly property dir = #[DIR_IO];

///////////////////////////////////////////////////////////////////////
// PUBLIC METHODS


///////////////////////////////////////////////////////////////////////
// PRIVATE METHODS

override method getTooltip(textScale)
   return null;
end

override method onCreate()
   this.supercall();
   this.port = null;    //readonly, cannot use setProperty
end


///////////////////////////////////////////////////////////////////////
// EVENT LISTENERS

// Every element that can contain a DirectPlug - can contain only one of these
listen canInsertElement for gml:Unit
   // elements that are not DirecPlugs
   if (!evt.child.isa('core.gml:DirectPlug'))
      return true;

   return ISEMPTY(evt.object.getPlugsByClass('core.gml:DirectPlug')); //only allow to insert one direct plug if there are no DirectPlug children
end



<@doc>
   Queries whether the current plug can be multiple connected .
   <return type="b">Return ~true iff the plug can multiple connected</return>
</doc@>
override method canMultipleConnect()
	return true;
end