Examples of java.awt.dnd.DropTargetListener

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

     * 
     * @param dropTargetComponents
     * the components files can be dropped on to transfer them to S3 
     */
    private void initDropTarget(Component[] dropTargetComponents) {
        DropTargetListener dropTargetListener = new DropTargetListener() {
            
            private Border originalBorder = appContentPanel.getBorder();
            private Border dragOverBorder = BorderFactory.createBevelBorder(1);
            
            private boolean checkValidDrag(DropTargetDragEvent dtde) {

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     * 
     * @param dropTargetComponents
     * the components files can be dropped on to transfer them to S3 
     */
    private void initDropTarget(JComponent[] dropTargetComponents) {
        DropTargetListener dropTargetListener = new DropTargetListener() {
            
            private boolean checkValidDrag(DropTargetDragEvent dtde) {
                if (dtde.isDataFlavorSupported(DataFlavor.javaFileListFlavor)
                    && (DnDConstants.ACTION_COPY == dtde.getDropAction() 
                        || DnDConstants.ACTION_MOVE == dtde.getDropAction()))

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     * 
     * @param dropTargetComponents
     * the components files can be dropped on to transfer them to S3 
     */
    private void initDropTarget(JComponent[] dropTargetComponents) {
        DropTargetListener dropTargetListener = new DropTargetListener() {
            
            private boolean checkValidDrag(DropTargetDragEvent dtde) {
                if (dtde.isDataFlavorSupported(DataFlavor.javaFileListFlavor)
                    && (DnDConstants.ACTION_COPY == dtde.getDropAction() 
                        || DnDConstants.ACTION_MOVE == dtde.getDropAction()))

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     * 
     * @param dropTargetComponents
     * the components files can be dropped on to transfer them to S3 
     */
    private void initDropTarget(JComponent[] dropTargetComponents) {
        DropTargetListener dropTargetListener = new DropTargetListener() {
            
            private boolean checkValidDrag(DropTargetDragEvent dtde) {
                if (dtde.isDataFlavorSupported(DataFlavor.javaFileListFlavor)
                    && (DnDConstants.ACTION_COPY == dtde.getDropAction() 
                        || DnDConstants.ACTION_MOVE == dtde.getDropAction()))

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     * 
     * @param dropTargetComponents
     * the components files can be dropped on to transfer them to S3 
     */
    private void initDropTarget(Component[] dropTargetComponents) {
        DropTargetListener dropTargetListener = new DropTargetListener() {
            
            private Border originalBorder = appContentPanel.getBorder();
            private Border dragOverBorder = BorderFactory.createBevelBorder(1);
            
            private boolean checkValidDrag(DropTargetDragEvent dtde) {

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        });


        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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    /* Register simulation menu actions */
    registerSimulationMenuAction(ResetViewportAction.class);
    registerSimulationMenuAction(ToggleDecorationsMenuAction.class);


    /* Drag and drop files to motes */
    DropTargetListener dTargetListener = new DropTargetListener() {
      @Override
      public void dragEnter(DropTargetDragEvent dtde) {
        if (acceptOrRejectDrag(dtde)) {
          dtde.acceptDrag(DnDConstants.ACTION_COPY_OR_MOVE);
        }

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            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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            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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     *
     * @param dropTargetComponents
     * the components files can be dropped on to transfer them to S3
     */
    private void initDropTarget(Component[] dropTargetComponents) {
        DropTargetListener dropTargetListener = new DropTargetListener() {


            private Border originalBorder = appContentPanel.getBorder();
            private Border dragOverBorder = BorderFactory.createBevelBorder(1);


            private boolean checkValidDrag(DropTargetDragEvent dtde) {

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