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 java.awt.dnd.DropTargetListener

         *  @param dtde The drop event.
         */
        public void dragExit(DropTargetEvent dtde) {
            //notify additionalListeners
            for (int i = 0; i < _additionalListeners.size(); i++) {
                DropTargetListener l = (DropTargetListener) _additionalListeners
                        .elementAt(i);
                l.dragExit(dtde);
            }
            if (_highlighted != null) {
                _highlighter.renderDeselected(_highlightedFigure);
                _highlighted = null;
                _highlightedFigure = null;

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Examples of java.awt.dnd.DropTargetListener

         *  @param dtde The drop event.
         */
        public void dragOver(DropTargetDragEvent dtde) {
            //notify additionalListeners
            for (int i = 0; i < _additionalListeners.size(); i++) {
                DropTargetListener l = (DropTargetListener) _additionalListeners
                        .elementAt(i);
                l.dragOver(dtde);
            }
            // See whether there is a container under the point.
            Point2D originalPoint = SnapConstraint.constrainPoint(dtde
                    .getLocation());
            NamedObj over = _getObjectUnder(originalPoint);

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Examples of java.awt.dnd.DropTargetListener

         *  @param dtde The drop event.
         */
        public void drop(DropTargetDropEvent dtde) {
            //notify additionalListeners
            for (int i = 0; i < _additionalListeners.size(); i++) {
                DropTargetListener l = (DropTargetListener) _additionalListeners
                        .elementAt(i);
                l.drop(dtde);
            }
            // Unhighlight the target. Do this first in case
            // errors occur... Don't want to leave highlighting.
            if (_highlighted != null) {
                _highlighter.renderDeselected(_highlightedFigure);

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Examples of java.awt.dnd.DropTargetListener

         *  @param dtde The drop event.
         */
        public void dropActionChanged(DropTargetDragEvent dtde) {
            //notify additionalListeners
            for (int i = 0; i < _additionalListeners.size(); i++) {
                DropTargetListener l = (DropTargetListener) _additionalListeners
                        .elementAt(i);
                l.dropActionChanged(dtde);
            }
            // Used to do this... Not needed?
            // dragEnter(dtde);
        }

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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,

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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

        });


        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

     * 
     * @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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Examples of java.awt.dnd.DropTargetListener

     * 
     * @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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Examples of java.awt.dnd.DropTargetListener

     * 
     * @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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