Examples of DropTargetListener

ae.java.awt.dnd.DropTargetListener
The DropTargetListener interface is the callback interface used by the DropTarget class to provide notification of DnD operations that involve the subject DropTarget. Methods of this interface may be implemented to provide "drag under" visual feedback to the user throughout the Drag and Drop operation.
Create a listener object by implementing the interface and then register it with a DropTarget. When the drag enters, moves over, or exits the operable part of the drop site for that DropTarget, when the drop action changes, and when the drop occurs, the relevant method in the listener object is invoked, and the DropTargetEvent is passed to it.
The operable part of the drop site for the DropTarget is the part of the associated Component's geometry that is not obscured by an overlapping top-level window or by another Component higher in the Z-order that has an associated active DropTarget.
During the drag, the data associated with the current drag operation can be retrieved by calling getTransferable() on DropTargetDragEvent instances passed to the listener's methods.
Note that getTransferable() on the DropTargetDragEvent instance should only be called within the respective listener's method and all the necessary data should be retrieved from the returned Transferable before that method returns. @since 1.2
java.awt.dnd.DropTargetListener
The DropTargetListener interface is the callback interface used by the DropTarget class to provide notification of DnD operations that involve the subject DropTarget. Methods of this interface may be implemented to provide "drag under" visual feedback to the user throughout the Drag and Drop operation.
Create a listener object by implementing the interface and then register it with a DropTarget. When the drag enters, moves over, or exits the operable part of the drop site for that DropTarget, when the drop action changes, and when the drop occurs, the relevant method in the listener object is invoked, and the DropTargetEvent is passed to it.
The operable part of the drop site for the DropTarget is the part of the associated Component's geometry that is not obscured by an overlapping top-level window or by another Component higher in the Z-order that has an associated active DropTarget.
During the drag, the data associated with the current drag operation can be retrieved by calling getTransferable() on DropTargetDragEvent instances passed to the listener's methods.
Note that getTransferable() on the DropTargetDragEvent instance should only be called within the respective listener's method and all the necessary data should be retrieved from the returned Transferable before that method returns. @since 1.2
org.eclipse.swt.dnd.DropTargetListener
The DropTargetListener class provides event notification to the application for DropTarget events.
As the user moves the cursor into, over and out of a Control that has been designated as a DropTarget, events indicate what operation can be performed and what data can be transferred if a drop where to occur at that point. The application can respond to these events and change the type of data that will be dropped by modifying event.currentDataType, or change the operation that will be performed by modifying the event.detail field or stop any drop from happening on the current target by setting the event.detail field to DND_DROP_NONE.

When the user causes a drop to happen by releasing the mouse over a valid drop target, the application has one last chance to change the data type of the drop through the DropAccept event. If the drop is still allowed, the DropAccept event is immediately followed by the Drop event. In the Drop event, the application can still change the operation that is performed but the data type is fixed.
@see DropTargetEvent

Examples of ae.java.awt.dnd.DropTargetListener

            try {
                DropTargetDragEvent dtde = new DropTargetDragEvent(dtc,
                                                                   hots,
                                                                   currentDA,
                                                                   currentSA);
                DropTargetListener dtl = (DropTargetListener)dt;
                if (operationChanged) {
                    dtl.dropActionChanged(dtde);
                } else {
                    dtl.dragOver(dtde);
                }


                if (dragRejected) {
                    currentDA = DnDConstants.ACTION_NONE;
                }

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Examples of java.awt.dnd.DropTargetListener

        });


        this.scrollPane = new JScrollPane(this.panel);


        // Set up drag and drop
        DropTargetListener dropTargetListener = new DropTargetAdapter() {
            public void drop(DropTargetDropEvent event) {
                GraphCanvas.this.drop(event);
            }
        };
        new DropTarget(this.panel, DnDConstants.ACTION_COPY_OR_MOVE, dropTargetListener);

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Examples of java.awt.dnd.DropTargetListener

        modelChartListFacade = new MultiModelChartFacade();
        addComponentListener(new ResizeListener());
        GridBagLayout layout = new GridBagLayout();
        getContentPane().setLayout(layout);
        // TODO refactor; looks very similar to DesktopPane implementation
        getContentPane().setDropTarget(new DropTarget(this, DnDConstants.ACTION_COPY, new DropTargetListener(){
            public void dragEnter(DropTargetDragEvent e) {
                if (e.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
                    e.acceptDrag(DnDConstants.ACTION_COPY);
                } else {
                    e.rejectDrag();

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Examples of java.awt.dnd.DropTargetListener

 */
public class DesktopPane extends JDesktopPane {


    public DesktopPane(final GCViewerGui gcViewer) {
        // TODO refactor; looks very similar to GCDocument implementation
        gcViewer.setDropTarget(new DropTarget(this, DnDConstants.ACTION_COPY, new DropTargetListener(){
            public void dragEnter(DropTargetDragEvent e) {
                if (e.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
                    e.acceptDrag(DnDConstants.ACTION_COPY);
                } else {
                    e.rejectDrag();

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Examples of java.awt.dnd.DropTargetListener


        GraphicalEditor graphicalEditor;
        GraphicalEditorUI graphicalEditorUI;
        DrawingViewContainer drawingViewContainer;
        ActionMap actionMap;
        DropTargetListener dropTargetListener;
        ElementLocator elementLocator;


        if (value == null) {
            graphicalEditor = createGraphicalEditor();
        } else {

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Examples of java.awt.dnd.DropTargetListener


        Interface graphicalEditor;
        UI graphicalEditorUI;
        DrawingViewContainer drawingViewContainer;
        ActionMap actionMap;
        DropTargetListener dropTargetListener;


        if (value == null) {
            graphicalEditor = createGraphicalEditor();
        } else {
            if (!value.getClass().isArray()) {

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Examples of java.awt.dnd.DropTargetListener

        }
      }
      
    });
    
    DropTargetListener dropTargetSourceListener =
       new DropTargetListener() {


        public void dragEnter(DropTargetDragEvent e) {}


        public void dragExit(DropTargetEvent e) {}


        public void dragOver(DropTargetDragEvent e) {}


        @SuppressWarnings("unchecked")
      public void drop(DropTargetDropEvent e) {
          
          try {
            Transferable tr = e.getTransferable();
            DataFlavor[] flavors = tr.getTransferDataFlavors();
            for (int i = 0; i < flavors.length; i++)
             if (flavors[i].isFlavorJavaFileListType()) {
              // accept drop
              e.acceptDrop (e.getDropAction());
              
              List<File> files = (List<File>) tr.getTransferData(flavors[i]);
              File dropFile = files.get(0);
              
              setFileToTextfields(dropFile);
              
              e.dropComplete(true);
              return;
             }
          } catch (Throwable t) {}
          e.rejectDrop();
        }
        
        public void dropActionChanged(
               DropTargetDragEvent e) {}
      };


    DropTargetListener dropTargetDestinationListener =
      new DropTargetListener() {
      
      public void dragEnter(DropTargetDragEvent e) {}
      
      public void dragExit(DropTargetEvent e) {}

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Examples of java.awt.dnd.DropTargetListener

        }
      }
      
    });
    
    DropTargetListener dropTargetSourceListener =
       new DropTargetListener() {


        public void dragEnter(DropTargetDragEvent e) {}


        public void dragExit(DropTargetEvent e) {}


        public void dragOver(DropTargetDragEvent e) {}


        @SuppressWarnings("unchecked")
      public void drop(DropTargetDropEvent e) {
          
          try {
            Transferable tr = e.getTransferable();
            DataFlavor[] flavors = tr.getTransferDataFlavors();
            for (int i = 0; i < flavors.length; i++)
             if (flavors[i].isFlavorJavaFileListType()) {
              // accept drop
              e.acceptDrop (e.getDropAction());
              
              List<File> files = (List<File>) tr.getTransferData(flavors[i]);
              File dropFile = files.get(0);
              
              setFileToTextfields(dropFile);
              
              e.dropComplete(true);
              return;
             }
          } catch (Throwable t) {}
          e.rejectDrop();
        }
        
        public void dropActionChanged(
               DropTargetDragEvent e) {}
      };


    DropTargetListener dropTargetDestinationListener =
      new DropTargetListener() {
      
      public void dragEnter(DropTargetDragEvent e) {}
      
      public void dragExit(DropTargetEvent e) {}

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Examples of java.awt.dnd.DropTargetListener

        enableEvents(AWTEvent.KEY_EVENT_MASK);          // catch KeyEvents
        enableEvents(AWTEvent.MOUSE_EVENT_MASK);        // catch MouseEvents
        enableEvents(AWTEvent.COMPONENT_EVENT_MASK);    // catch ComponentEvents




        DropTargetListener dropTargetListener = new DropTargetListener() {


            // Die Maus betritt die Komponente mit
            // einem Objekt
            public void dragEnter(DropTargetDragEvent e)
            {

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Examples of java.awt.dnd.DropTargetListener

         *  @param dtde The drop event.
         */
        public void dragEnter(DropTargetDragEvent dtde) {
            //notify additionalListeners
            for (int i = 0; i < _additionalListeners.size(); i++) {
                DropTargetListener l = (DropTargetListener) _additionalListeners
                        .elementAt(i);
                l.dragEnter(dtde);
            }


            if (dtde.isDataFlavorSupported(PtolemyTransferable.namedObjFlavor)) {
                dtde.acceptDrag(DnDConstants.ACTION_COPY_OR_MOVE);
            } else {

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