Examples of java.awt.dnd.DropTargetDropEvent

java.awt.dnd.DropTargetDropEvent
The DropTargetDropEvent is delivered via the DropTargetListener drop() method.
The DropTargetDropEvent reports the source drop actions and the user drop action that reflect the current state of the drag-and-drop operation.
Source drop actions is a bitwise mask of DnDConstants that represents the set of drop actions supported by the drag source for this drag-and-drop operation.
User drop action depends on the drop actions supported by the drag source and the drop action selected by the user. The user can select a drop action by pressing modifier keys during the drag operation:
```
 Ctrl + Shift -> ACTION_LINK Ctrl         -> ACTION_COPY Shift        -> ACTION_MOVE 
```
If the user selects a drop action, the user drop action is one of DnDConstants that represents the selected drop action if this drop action is supported by the drag source or DnDConstants.ACTION_NONE if this drop action is not supported by the drag source.
If the user doesn't select a drop action, the set of DnDConstants that represents the set of drop actions supported by the drag source is searched for DnDConstants.ACTION_MOVE, then for DnDConstants.ACTION_COPY, then for DnDConstants.ACTION_LINK and the user drop action is the first constant found. If no constant is found the user drop action is DnDConstants.ACTION_NONE. @since 1.2

                dropAction = e.getDropAction();
                break;
            }
            case DRAG_DROP:
            {
                DropTargetDropEvent e = (DropTargetDropEvent)currentEvent;
                context.getDropTarget().drop(e);
                dropAction = e.getDropAction();
                break;
            }
            case DRAG_LEAVE:
            {
                context.getDropTarget().dragExit(currentEvent);

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        AbstractComponent mockCanvasComponent = new TestComponent();
        AbstractComponent mockDropComponent = new TestComponent();
        CanvasManifestation canvas = new CanvasManifestation(mockCanvasComponent, mockCanvasViewInfo);
        DropTarget dt = canvas.getDropTarget();
        
        DropTargetDropEvent mockDTDE = Mockito.mock(DropTargetDropEvent.class);
        Transferable mockTransferable = Mockito.mock(Transferable.class);
        View[] mockViews = { Mockito.mock(View.class) };
        
        Mockito.when(mockViews[0].getManifestedComponent()).thenReturn(mockDropComponent);
        Mockito.when(mockViews[0].getInfo()).thenReturn(mockCanvasViewInfo);
        Mockito.when(mockPersistence.getComponent(Mockito.anyString())).thenReturn(mockDropComponent);
        Mockito.when(mockDTDE.getTransferable()).thenReturn(mockTransferable);
        Mockito.when(mockTransferable.isDataFlavorSupported(View.DATA_FLAVOR)).thenReturn(true);
        Mockito.when(mockDTDE.getLocation()).thenReturn(new Point(0,0));
        Mockito.when(mockTransferable.getTransferData(View.DATA_FLAVOR)).thenReturn(mockViews);
        
        dt.drop(mockDTDE);
    }

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    private TransferSupport createPasteTransferSupport(Component comp, Transferable transferable) {
        return new TransferSupport(comp, transferable);
    }
    
    private TransferSupport createDropTransferSupport(Component comp, Transferable transferable, DataFlavor[] flavors) throws Exception {
        DropTargetDropEvent event = mock(DropTargetDropEvent.class);
        when(event.getTransferable()).thenReturn(transferable);
        when(event.getCurrentDataFlavors()).thenReturn(flavors);
        when(event.getLocation()).thenReturn(new Point(0,0));
        
        Constructor<TransferSupport> constructor = TransferSupport.class.getDeclaredConstructor(Component.class, DropTargetEvent.class);
        constructor.setAccessible(true);
        return constructor.newInstance(comp, event);
    }

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            dataObject = new WinDataTransfer.IDataObject(dataObjectPtr);
            DataSnapshot snapshot = new DataSnapshot(dataObject);
            transferable = new DataProxy(snapshot);
        }


        DropTargetDropEvent e = new DropTargetDropEvent(
                context, new Point(x, y), 
                WinDragSource.getDndActions(userAction), 
                WinDragSource.getDndActions(sourceActions));
        
        int ret = dispatchEvent(e, DRAG_DROP);

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                dropAction = e.getDropAction();
                break;
            }
            case DRAG_DROP:
            {
                DropTargetDropEvent e = (DropTargetDropEvent)currentEvent;
                context.getDropTarget().drop(e);
                dropAction = e.getDropAction();
                break;
            }
            case DRAG_LEAVE:
            {
                context.getDropTarget().dragExit(currentEvent);

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            // Set transferable
            try {
                // XXX Java 1.3 and 1.4 workaround for:
                // http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4378091
                Transferable transferable =
                    new DropTargetDropEvent(dtde.getDropTargetContext(),
                                            dtde.getLocation(), 0, 0)
                        .getTransferable();
                // Transferable transferable = dtde.getTransferable();
                DataFlavor[] flavors = transferable.getTransferDataFlavors();
                for (int i = 0; i < flavors.length; i++) {

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                if ((local = getJVMLocalSourceTransferable()) != null)
                    setCurrentJVMLocalSourceTransferable(null);
            }


            try {
                ((DropTargetListener)dt).drop(new DropTargetDropEvent(dtc,
                                                                      hots,
                                                                      currentDA,
                                                                      currentSA,
                                                                      local != null));
            } finally {

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            sourceActions = ev.getSourceActions();
            flavors = ev.getCurrentDataFlavors();
            location = ev.getLocation();
        }
        else if (e instanceof DropTargetDropEvent) {
            DropTargetDropEvent ev = (DropTargetDropEvent)e;
            currentAction = ev.getDropAction();
            sourceActions = ev.getSourceActions();
            flavors = ev.getCurrentDataFlavors();
            location = ev.getLocation();
        }
        if (isSupported(flavors)) {
            int availableActions = getDropActionsForFlavors(flavors);
            currentAction = getDropAction(e, currentAction, sourceActions, availableActions);
            if (currentAction != DragHandler.NONE) {

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                    + " act=" + DragHandler.actionString(ev.getDropAction());
            }
            else if (e instanceof DropTargetDropEvent) {
                DropTargetContext dtc = e.getDropTargetContext();
                DropTarget dt = dtc.getDropTarget();
                DropTargetDropEvent ev = (DropTargetDropEvent)e;
                msg += ": src=" + DragHandler.actionString(ev.getSourceActions())
                + " tgt=" + DragHandler.actionString(dt.getDefaultActions())
                + " act=" + DragHandler.actionString(ev.getDropAction());
            }
            if (!msg.equals(lastAction)) {
                System.out.println(lastAction = msg);
            }
        }

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