<@doc alias="elem" hierarchy="GMLDOM" also="NavigationLink, BindLink">
   Represents a data mapping between two elements.

   <remarks>
   A data link may be created between plugs in these cases:
      <grid class="BOTH">
      Source plug | Source plug parent | Target plug | Target plug parent
      @Outplug    | @Configurable      |  @Inplug    | @Usage, @DataPort
      </grid>
   <bul>
   Multiple data links can be connected to the same target element.
   To override this behavior, override the method @Configurable!canConnectDataPlugs on the target plug's parent element.
   </bul>
   </remarks>

   <copyright>(c) SAP AG 2003-2006. All rights reserved.</copyright>
</doc@>

#INCLUDE[svg:defs.inc]
#ALIAS[g=core.svg:GmlDrawing]

///////////////////////////////////////////////////////////////////////
// CLASS HEADER

Class DataLink inherit EventLink;

metadata title = '#TEXT[XTIT_DATA_LINK]';
metadata descr = '#TEXT[XTOL_DATA_LINK]';

attach svg:OrthogonalLine override {
   arrowHead:    #[SVG_BLOCK_ARROW|SVG_FILLED],
   cornerRadius: 5
}


///////////////////////////////////////////////////////////////////////
// PROPERTIES
property navigable = false;
metadata for navigable = {
   editor:   'check',
   group:    'Behavior',
   label:    'Navigation',
   visible:  'ISA(data, "core.gml:DataLink")',
   priority: 200
}

///////////////////////////////////////////////////////////////////////
// METHODS


///////////////////////////////////////////////////////////////////////
// LISTENERS
listen onUpdateObject for core.gml:DataLink
   if(evt.name != 'navigable') return;

   evt.object.setProperty('@g:arrowHead', this.navigable? #[SVG_CLASSIC_ARROW|SVG_FILLED] :
                                                       #[SVG_BLOCK_ARROW|SVG_FILLED]);
end

listen onUpdateObject for core.gml:DataLink
   if(evt.name != 'eventName') return;
   evt.object.setProperty('name', evt.value); //event is also link's name
end