Examples of org.eclipse.ui.dnd.IDragAndDropService

org.eclipse.ui.dnd.IDragAndDropService
This interface specifies the API for a service to be used by part authors to access methods which provide support for Drag and Drop operations within the workbench.
Authors should access this service using the PartSite's getService method, passing this interface as the argument.

NOTE: This interface it not expected to be implemented by clients; it is provided only to allow access to the service's methods.

@since 3.3

   */
  protected void uninstallTextDragAndDrop(ISourceViewer viewer) {
    if (viewer == null || !fIsTextDragAndDropInstalled)
      return;


    final IDragAndDropService dndService = (IDragAndDropService) getSite()
        .getService(IDragAndDropService.class);
    if (dndService == null)
      return;


    StyledText st = viewer.getTextWidget();
    dndService.removeMergedDropTarget(st);


    DragSource dragSource = (DragSource) st.getData(DND.DRAG_SOURCE_KEY);
    if (dragSource != null) {
      dragSource.dispose();
      st.setData(DND.DRAG_SOURCE_KEY, null);

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    int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_DEFAULT;
    Transfer[] transfers = new Transfer[] { LocalSelectionTransfer.getTransfer(),TextTransfer.getInstance(),ResourceTransfer.getInstance(),FileTransfer.getInstance() };
    //installTextDragAndDrop(getSourceViewer());
    CFEDragDropListener ddListener = new CFEDragDropListener(this,
        (ProjectionViewer) this.getSourceViewer(), SelectionCursorListener);
    IDragAndDropService dtSvc = (IDragAndDropService) getSite().getService(IDragAndDropService.class);
    dtSvc.addMergedDropTarget(tw, operations, transfers, ddListener);
    final DragSource source= new DragSource(tw, DND.DROP_COPY | DND.DROP_MOVE);
    source.setTransfer(new Transfer[] {TextTransfer.getInstance()});
    source.addDragListener(ddListener);      
  }

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    }
    CFMLPlugin.getDefault().getPreferenceStore().removePropertyChangeListener(
        this);
    CFMLPlugin.getDefault().getLastActionManager().removeAction(this);
    //remove the dnd listener
    final IDragAndDropService dndService= (IDragAndDropService)getSite().getService(IDragAndDropService.class);
    if (dndService == null)
      return;


    StyledText st= getSourceViewer().getTextWidget();
    if(st != null) {      
      dndService.removeMergedDropTarget(st);
      
      DragSource dragSource= (DragSource)st.getData(DND.DRAG_SOURCE_KEY);
      if (dragSource != null) {
        dragSource.dispose();
        st.setData(DND.DRAG_SOURCE_KEY, null);

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