Examples of DragSourceListener

java.awt.dnd.DragSourceListener
The DragSourceListener defines the event interface for originators of Drag and Drop operations to track the state of the user's gesture, and to provide appropriate "drag over" feedback to the user throughout the Drag and Drop operation.
The drop site is associated with the previous dragEnter() invocation if the latest invocation of dragEnter() on this listener:
- corresponds to that drop site and
- is not followed by a dragExit() invocation on this listener.
@since 1.2
org.eclipse.swt.dnd.DragSourceListener
The DragSourceListener class provides event notification to the application for DragSource events.
When the user drops data on a DropTarget, the application which defines the DragSource must provide the dropped data by implementing dragSetData. In the dragSetData, the application must support all the data types that were specified in the DragSource#setTransfer method.

After the drop has completed successfully or has been aborted, the application which defines the DragSource is required to take the appropriate cleanup action. In the case of a successful move operation, the application must remove the data that was transferred.

Examples of org.eclipse.swt.dnd.DragSourceListener

     * Creates DND source for the list
     */
    private void createDNDSource() {
      DragSource ds = new DragSource(list, DND.DROP_COPY);
      ds.setTransfer(new Transfer[] { TextTransfer.getInstance() });
      ds.addDragListener(new DragSourceListener() {
        public void dragFinished(DragSourceEvent event) {


        }


        public void dragSetData(DragSourceEvent event) {

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Examples of org.eclipse.swt.dnd.DragSourceListener

            // This example will allow the text to be copied or moved to the drop target
            int operations = DND.DROP_COPY;


            DragSource source = new DragSource(table, operations);
            source.setTransfer(types);
            source.addDragListener(new DragSourceListener() {
                public void dragStart(DragSourceEvent event) {
                    logger.debug("drag start: " + event);
                    // // Only start the drag if there is actually text in the
                    // // label - this text will be what is dropped on the target.
                    // if (label.getText().length() == 0) {

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Examples of org.eclipse.swt.dnd.DragSourceListener

            });
        }


        leftDragSource.setTransfer(types);


        leftDragSource.addDragListener(new DragSourceListener() {
            public void dragStart(DragSourceEvent event) {
                // Only start the drag if there is something selected
                event.doit = leftListController.list.getSelectionCount() > 0;
            }

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Examples of org.eclipse.swt.dnd.DragSourceListener

                    new DragSource(rightListController.list, DND.DROP_MOVE);


            // Provide data in Text format
            rightDragSource.setTransfer(types);


            rightDragSource.addDragListener(new DragSourceListener() {
                public void dragStart(DragSourceEvent event) {
                    // Only start the drag if there is a selection
                    event.doit =
                            rightListController.list.getSelectionCount() > 0;
                }

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Examples of org.eclipse.swt.dnd.DragSourceListener


    DragSource source = new DragSource(viewer.getTree(), DND.DROP_COPY);


    source.setTransfer(new Transfer[] { FeatureStructureTransfer.getInstance() });


    source.addDragListener(new DragSourceListener() {
      TreeItem dragSourceItem = null;


      public void dragStart(DragSourceEvent event) {


        event.doit = false;

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Examples of org.eclipse.swt.dnd.DragSourceListener


    DragSource source = new DragSource(mTableViewer.getTree(), DND.DROP_COPY);


    source.setTransfer(new Transfer[] { FeatureStructureTransfer.getInstance() });


    source.addDragListener(new DragSourceListener() {
      TreeItem dragSourceItem = null;


      public void dragStart(DragSourceEvent event) {
        TreeItem[] selection = mTableViewer.getTree().getSelection();

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Examples of org.eclipse.swt.dnd.DragSourceListener

    Menu menu = contextMenu.createContextMenu(getControl());
    getControl().setMenu(menu);
  }


  private DragSourceListener createDragSourceListener() {
    return new DragSourceListener() {
      public void dragFinished(DragSourceEvent event) {
        LocalSelectionTransfer.getTransfer().setSelection(null);
      }


      public void dragSetData(DragSourceEvent event) {

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Examples of org.eclipse.swt.dnd.DragSourceListener


    DragSource source = new DragSource(viewer.getTree(), DND.DROP_COPY);


    source.setTransfer(new Transfer[] { FeatureStructureTransfer.getInstance() });


    source.addDragListener(new DragSourceListener() {
      TreeItem dragSourceItem = null;


      public void dragStart(DragSourceEvent event) {


        event.doit = false;

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Examples of org.eclipse.swt.dnd.DragSourceListener

   * Initialize the drag and drop functionality.
   */
  private void init() {
        DragSource source = new DragSource(tableViewer.getControl(), DND.DROP_COPY | DND.DROP_MOVE);
        source.setTransfer(new Transfer[]{ new CsvRowTransfer()});
        source.addDragListener(new DragSourceListener() {
      
      @Override
      public void dragStart(DragSourceEvent event) {
        event.doit = ((IStructuredSelection)tableViewer.getSelection()).toArray().length == 1;
      }

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Examples of org.eclipse.swt.dnd.DragSourceListener

    public void addDragSupport(final int operations,
            final Transfer[] transferTypes, final DragSourceListener listener) {
        final DragSource dragSource = new DragSource(this, operations);
        dragSource.setTransfer(transferTypes);


        DragSourceListener wrapper = new DragSourceListener() {


            @Override
            public void dragStart(DragSourceEvent event) {
                listener.dragStart(event);
            }

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