GTreeDragNDropHandler

All Superinterfaces:

GTreeTransferHandler

All Known Implementing Classes:

DataTreeDragNDropHandler, ErrLogExpandableDialog.ExcTreeTransferHandler
```
public interface GTreeDragNDropHandler
extends GTreeTransferHandler
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`drop(GTreeNode destUserData, java.awt.datatransfer.Transferable transferable, int dropAction)`	Add the given transferable's data to the destination user data.
`int`	`getSupportedDragActions()`	Returns the supported Drag actions for this tree.
`boolean`	`isDropSiteOk(GTreeNode destUserData, java.awt.datatransfer.DataFlavor[] flavors, int dropAction)`	Return true if the drop site is valid for the given target.
`boolean`	`isStartDragOk(java.util.List<GTreeNode> dragUserData, int dragAction)`	Return true if the dragUserData can be dragged.

Methods inherited from interface docking.widgets.tree.support.GTreeTransferHandler
getSupportedDataFlavors, getTransferData

- Method Detail
  - isStartDragOk
```
boolean isStartDragOk(java.util.List<GTreeNode> dragUserData,
                      int dragAction)
```
    Return true if the dragUserData can be dragged.
    
    Parameters:
    
    dragUserData - data where user is initiating the drag operation
    
    dragAction - user action for the drag operation
  - getSupportedDragActions
```
int getSupportedDragActions()
```
    Returns the supported Drag actions for this tree. For available actions see DnDConstants.
    
    Returns:
    
    the supported Drag actions.
  - isDropSiteOk
```
boolean isDropSiteOk(GTreeNode destUserData,
                     java.awt.datatransfer.DataFlavor[] flavors,
                     int dropAction)
```
    Return true if the drop site is valid for the given target.
    
    Parameters:
    
    destUserData - destination for node being dragged
    
    flavors - flavor(s) being dragged
    
    dropAction - user action for drop operation
  - drop
```
void drop(GTreeNode destUserData,
          java.awt.datatransfer.Transferable transferable,
          int dropAction)
```
    Add the given transferable's data to the destination user data.
    
    Parameters:
    
    destUserData - destination node for the data.
    
    transferable - the transferable being dragged whose data will be dropped.
    
    dropAction - user action for drop operation