_mouseDownHandler: function()

in rico.js [1060:1089]

• 23 lines of code
• 13 McCabe index (conditional complexity)

   _mouseDownHandler: function(e) {
      if ( arguments.length == 0 )
         e = event;

      // if not button 1 ignore it...
      var nsEvent = e.which != undefined;
      if ( (nsEvent && e.which != 1) || (!nsEvent && e.button != 1))
         return;

      var eventTarget      = e.target ? e.target : e.srcElement;
      var draggableObject  = eventTarget.draggable;

      var candidate = eventTarget;
      while (draggableObject == null && candidate.parentNode) {
         candidate = candidate.parentNode;
         draggableObject = candidate.draggable;
      }
   
      if ( draggableObject == null )
         return;

      this.updateSelection( draggableObject, e.ctrlKey );

      // clear the drop zones postion cache...
      if ( this.hasSelection() )
         for ( var i = 0 ; i < this.dropZones.length ; i++ )
            this.dropZones[i].clearPositionCache();

      this.setStartDragFromElement( e, draggableObject.getMouseDownHTMLElement() );
   },