public void setOperation(int opId)
 {
     ICellOperation cellOp;
     if ( this._cellOpsMap.TryGetValue(opId, out cellOp) )
     {
         this._curOp = cellOp;
     }
 }
 public void clearOperationState()
 {
     if (this._curOp != null)
     {
         this._curOp.clear();
         this._curOp = null;
     }
 }