addPossibleOperation(
   oper STRING ) 
 | 
Add a possible operation. | 
                    
                        
                            dropInternal() 
                         | 
                        Perform built-in row drop in trees. | 
                    
                    
                        
                            getBuffer()
  RETURNING result STRING 
                         | 
                        Get drag & drop data from the buffer. | 
                    
                    
                        
                            getLocationParent()
  RETURNING result INTEGER 
                         | 
                        Get the index of the parent node where the object was dropped. | 
                    
getLocationRow()
  RETURNING result INTEGER 
 | 
Get the index of the target row where the object was dropped. | 
getOperation()
  RETURNING result STRING 
 | 
Identify the type of operation on drop. | 
                    
                        
                            getSelectedMimeType()
  RETURNING result STRING 
                         | 
                        Get the previously selected MIME type. | 
                    
                    
                        
                            selectMimeType(
   type STRING ) 
                         | 
                        Select the MIME type before getting the data. | 
                    
                    
                        
                            setBuffer(
   data STRING ) 
                         | 
                        Set the text data of the dragged object. | 
                    
setFeedback(
   type STRING ) 
 | 
Define the appearance of the target during Drag & Drop. | 
                    
                        
                            setMimeType(
   type STRING ) 
                         | 
                        Define the MIME type of the dragged object. | 
                    
                    
                        
                            setOperation(
   oper STRING ) 
                         | 
                        Define the type of Drag & Drop operation. |