Examples of org.eclipse.swt.dnd.DragSourceListener

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.

  private void initDragAndDrop() {
    int ops = DND.DROP_COPY | DND.DROP_MOVE;
    Transfer[] transfers = new Transfer[] { LocalSelectionTransfer.getTransfer(), TextTransfer.getInstance(), URLTransfer.getInstance() };


    /* Drag Support */
    fViewer.addDragSupport(ops, transfers, new DragSourceListener() {
      public void dragStart(final DragSourceEvent event) {
        SafeRunner.run(new LoggingSafeRunnable() {
          public void run() throws Exception {
            LocalSelectionTransfer.getTransfer().setSelection(fViewer.getSelection());
            LocalSelectionTransfer.getTransfer().setSelectionSetTime(event.time & 0xFFFFFFFFL);

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  private void initDragAndDrop() {
    int ops = DND.DROP_COPY | DND.DROP_MOVE;
    Transfer[] transfers = new Transfer[] { LocalSelectionTransfer.getTransfer(), TextTransfer.getInstance(), URLTransfer.getInstance() };


    /* Drag Support */
    fResultViewer.addDragSupport(ops, transfers, new DragSourceListener() {
      public void dragStart(final DragSourceEvent event) {
        SafeRunner.run(new LoggingSafeRunnable() {
          public void run() throws Exception {
            LocalSelectionTransfer.getTransfer().setSelection(fResultViewer.getSelection());
            LocalSelectionTransfer.getTransfer().setSelectionSetTime(event.time & 0xFFFFFFFFL);

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    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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    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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    }


    private void addDragDropSupport() {
        // TODO: Support drag and drop of directories
        Transfer[] transfers = new Transfer[] { FileTransfer.getInstance()};
        viewer.addDragSupport(DND.DROP_COPY, transfers, new DragSourceListener() {
            private TreeObject[] target;


            public void dragFinished(DragSourceEvent event) {
                target = null;
                event.doit = true;

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  /**
   * Configures DND in {@link #m_viewer}.
   */
  private void configureDND() {
    Transfer[] transfers = new Transfer[]{EmptyTransfer.INSTANCE};
    m_viewer.addDragSupport(DND.DROP_MOVE, transfers, new DragSourceListener() {
      public void dragStart(DragSourceEvent event) {
        m_dragElements = getSelectedElements();
        m_dragCategory = m_dragElements.get(0) instanceof CategoryInfo;
        // check that we drag only categories or only entries
        for (Object element : m_dragElements) {

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            hideSelfImportsFilter
        });


        viewer.addDragSupport(DND.DROP_MOVE | DND.DROP_COPY, new Transfer[] {
            LocalSelectionTransfer.getTransfer()
        }, new DragSourceListener() {
            public void dragStart(DragSourceEvent event) {}


            public void dragSetData(DragSourceEvent event) {
                LocalSelectionTransfer transfer = LocalSelectionTransfer.getTransfer();
                if (transfer.isSupportedType(event.dataType))

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    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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    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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  private void setupDataManagerViewForDragAndDropOutOf(Composite parent) {
    Transfer[] types = new Transfer[] { new CIShellDataTransfer(Activator.context) };
    DragSource dragSource = new DragSource(parent, DND.DROP_DEFAULT | DND.DROP_MOVE);
    dragSource.setTransfer(types);
    dragSource.addDragListener(new DragSourceListener() {
      private Data[] selectedData;


      public void dragStart(DragSourceEvent event) {
        System.err.println("dragStart");
        Data[] selectedData = AbstractDataManagerView.this.manager.getSelectedData();

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