org.eclipse.jface.viewers.StructuredViewer Java Examples

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

public StructuredViewer createViewer(Composite parent){
	switch (type) {
	case TYPE_TREE:
		return new TreeViewer(parent, style);
	case TYPE_LIST:
		return new ListViewer(parent, style);
	case TYPE_TABLE:
		return new TableViewer(parent, style);
	case TYPE_LAZYLIST:
		TableViewer ret = new TableViewer(parent, style | SWT.VIRTUAL);
		
		// ret.getTable().setItemCount(0);
		return ret;
	}
	return null;
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well
 * registering the menu for extension. <!-- begin-user-doc --> <!--
 * end-user-doc -->
 */
protected void createContextMenuFor ( final StructuredViewer viewer )
{
    final MenuManager contextMenu = new MenuManager ( "#PopUp" );
    contextMenu.add ( new Separator ( "additions" ) );
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    final Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    final int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    final Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( this.editingDomain, viewer ) );
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

/**
 * Adds the actions to the tableviewer context menu.
 *
 * @param actions
 *          a collection of IAction objets
 */
private void hookContextMenu(final Collection<Object> actions, StructuredViewer viewer) {
  MenuManager menuMgr = new MenuManager();
  menuMgr.setRemoveAllWhenShown(true);
  menuMgr.addMenuListener(new IMenuListener() {
    @Override
    public void menuAboutToShow(IMenuManager manager) {
      for (Iterator<Object> iter = actions.iterator(); iter.hasNext();) {
        Object item = iter.next();
        if (item instanceof IContributionItem) {
          manager.add((IContributionItem) item);
        } else if (item instanceof IAction) {
          manager.add((IAction) item);
        }
      }
      manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
    }
  });
  Menu menu = menuMgr.createContextMenu(viewer.getControl());
  viewer.getControl().setMenu(menu);

  getSite().registerContextMenu(menuMgr, viewer);
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

private void revealElementInEditor(Object elem, StructuredViewer originViewer) {
	// only allow revealing when the type hierarchy is the active page
	// no revealing after selection events due to model changes

	if (getSite().getPage().getActivePart() != this) {
		return;
	}

	if (fSelectionProviderMediator.getViewerInFocus() != originViewer) {
		return;
	}

	IEditorPart editorPart= EditorUtility.isOpenInEditor(elem);
	if (editorPart != null && (elem instanceof IJavaElement)) {
		getSite().getPage().removePartListener(fPartListener);
		getSite().getPage().bringToTop(editorPart);
		EditorUtility.revealInEditor(editorPart, (IJavaElement) elem);
		getSite().getPage().addPartListener(fPartListener);
	}
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

/**
 * Updates a viewer's element and makes sure it runs in the SWT thread. Runs a refresh in case the
 * viewer does not support updates.
 *
 * @param viewer
 * @param element
 * @param properties
 * @see StructuredViewer#update(Object, String[])
 */
public static void update(final Viewer viewer, final Object element, final String[] properties) {
  Display.getDefault()
      .asyncExec(
          new Runnable() {
            @Override
            public void run() {
              if (viewer == null || viewer.getControl().isDisposed()) return;

              if (viewer instanceof StructuredViewer) {
                StructuredViewer structuredViewer = (StructuredViewer) viewer;
                structuredViewer.update(element, properties);
              } else {
                viewer.refresh();
              }
            }
          });
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor ( StructuredViewer viewer )
{
    MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new EditingDomainViewerDropAdapter ( editingDomain, viewer ) );
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well
 * registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 *
 * @generated NOT
 */
protected void createContextMenuFor ( final StructuredViewer viewer )
{
    final MenuManager contextMenu = new MenuManager ( "#PopUp" ); //$NON-NLS-1$
    contextMenu.add ( new Separator ( "additions" ) ); //$NON-NLS-1$
    contextMenu.setRemoveAllWhenShown ( true );
    contextMenu.addMenuListener ( this );
    final Menu menu = contextMenu.createContextMenu ( viewer.getControl () );
    viewer.getControl ().setMenu ( menu );
    getSite ().registerContextMenu ( contextMenu, new UnwrappingSelectionProvider ( viewer ) );

    final int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    final Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance (), LocalSelectionTransfer.getTransfer (), FileTransfer.getInstance (), ItemTransfer.getInstance () };
    viewer.addDragSupport ( dndOperations, transfers, new ViewerDragAdapter ( viewer ) );
    viewer.addDropSupport ( dndOperations, transfers, new DropAdapterExtension ( this.editingDomain, viewer ) );
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * 
 * @generated
 */
protected void createContextMenuFor(StructuredViewer viewer) {
    MenuManager contextMenu = new MenuManager("#PopUp");
    contextMenu.add(new Separator("additions"));
    contextMenu.setRemoveAllWhenShown(true);
    contextMenu.addMenuListener(this);
    Menu menu = contextMenu.createContextMenu(viewer.getControl());
    viewer.getControl().setMenu(menu);
    getSite().registerContextMenu(contextMenu, new UnwrappingSelectionProvider(viewer));

    int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
    Transfer[] transfers = new Transfer[] {LocalTransfer.getInstance(), LocalSelectionTransfer.getTransfer(),
        FileTransfer.getInstance()};
    viewer.addDragSupport(dndOperations, transfers, new ViewerDragAdapter(viewer));
    viewer.addDropSupport(dndOperations, transfers, new EditingDomainViewerDropAdapter(editingDomain, viewer));
}
 

private void selectRootObject(Properties params) {

        IRepositoryView view = RepositoryManagerHelper.getRepositoryView();
        if (view != null) {
            Object type = params.get("type");
            if (CamelRepositoryNodeType.repositoryBeansType.name().equals(type)) {
                IRepositoryNode processNode = ((ProjectRepositoryNode) view.getRoot())
                        .getRootRepositoryNode(ERepositoryObjectType.PROCESS);
                if (processNode != null) {
                    setWorkbenchPart(view);
                    final StructuredViewer viewer = view.getViewer();
                    if (viewer instanceof TreeViewer) {
                        ((TreeViewer) viewer).expandToLevel(processNode, 1);
                    }
                    viewer.setSelection(new StructuredSelection(processNode));
                }

            }
        }

    }
 

public String getLabel() {
	String label= super.getLabel();
	StructuredViewer viewer= getViewer();
	if (viewer instanceof TableViewer) {
		TableViewer tv= (TableViewer) viewer;

		AbstractTextSearchResult result= getInput();
		if (result != null) {
			int itemCount= ((IStructuredContentProvider) tv.getContentProvider()).getElements(getInput()).length;
			if (showLineMatches()) {
				int matchCount= getInput().getMatchCount();
				if (itemCount < matchCount) {
					return Messages.format(SearchMessages.FileSearchPage_limited_format_matches, new Object[]{label, new Integer(itemCount), new Integer(matchCount)});
				}
			} else {
				int fileCount= getInput().getElements().length;
				if (itemCount < fileCount) {
					return Messages.format(SearchMessages.FileSearchPage_limited_format_files, new Object[]{label, new Integer(itemCount), new Integer(fileCount)});
				}
			}
		}
	}
	return label;
}
 

@Override
public boolean select(Viewer viewer, Object parentElement, Object element){
	if (searchString == null || searchString.length() == 0) {
		return true;
	}
	
	StructuredViewer sviewer = (StructuredViewer) viewer;
	ITreeContentProvider provider = (ITreeContentProvider) sviewer.getContentProvider();
	Object[] children = provider.getChildren(element);
	if (children != null && children.length > 0) {
		for (Object child : children) {
			if (select(viewer, element, child)) {
				return true;
			}
		}
	}
	return isSelect(element);
}
 

/**
 * Refreshes a viewer's display and makes sure it runs in the SWT thread.
 *
 * @param viewer
 * @param updateLabels
 * @see Viewer#refresh()
 * @see StructuredViewer#refresh(boolean)
 */
public static void refresh(final Viewer viewer, final boolean updateLabels) {
  Display.getDefault()
      .asyncExec(
          new Runnable() {
            @Override
            public void run() {
              if (viewer == null || viewer.getControl().isDisposed()) return;

              if (viewer instanceof StructuredViewer) {
                StructuredViewer structuredViewer = (StructuredViewer) viewer;
                structuredViewer.refresh(updateLabels);
              } else {
                viewer.refresh();
              }
            }
          });
}
 

private void addDragAdapters(StructuredViewer viewer) {
	int ops= DND.DROP_COPY | DND.DROP_LINK;

	Transfer[] transfers= new Transfer[] { LocalSelectionTransfer.getInstance(), ResourceTransfer.getInstance(), FileTransfer.getInstance()};

	DelegatingDragAdapter dragAdapter= new DelegatingDragAdapter() {
		@Override
		public void dragStart(DragSourceEvent event) {
			IStructuredSelection selection= (IStructuredSelection) fSelectionProviderMediator.getSelection();
			if (selection.isEmpty()) {
				event.doit= false;
				return;
			}
			super.dragStart(event);
		}
	};
	dragAdapter.addDragSourceListener(new SelectionTransferDragAdapter(fSelectionProviderMediator));
	dragAdapter.addDragSourceListener(new EditorInputTransferDragAdapter(fSelectionProviderMediator));
	dragAdapter.addDragSourceListener(new ResourceTransferDragAdapter(fSelectionProviderMediator));
	dragAdapter.addDragSourceListener(new FileTransferDragAdapter(fSelectionProviderMediator));

	viewer.addDragSupport(ops, transfers, dragAdapter);
}
 

@Override
protected void configureViewer(final StructuredViewer viewer) {
    viewer.setLabelProvider(new LabelProvider() {

        @Override
        public String getText(final Object element) {
            final String displayName = ((org.bonitasoft.studio.actors.model.organization.Group) element).getDisplayName();
            if (displayName == null || displayName.isEmpty()) {
                return ((org.bonitasoft.studio.actors.model.organization.Group) element).getName();
            }
            return displayName;
        }
    });

    if (groupList != null && getViewer() != null) {
        getViewer().setInput(groupList);
        ((TreeViewer) getViewer()).expandAll();
    }
}
 

public FileTransferDropAdapter(StructuredViewer viewer) {
	super(viewer);

	setScrollEnabled(true);
	setExpandEnabled(true);
	setFeedbackEnabled(false);
}
 

private void updateGroupWith(StructuredViewer viewer) {
    if (viewer != null) {
        IContentProvider contentProvider = viewer.getContentProvider();
        if (contentProvider instanceof ISearchIndexContentProvider) {
            ISearchIndexContentProvider searchIndexTreeContentProvider = (ISearchIndexContentProvider) contentProvider;
            searchIndexTreeContentProvider.setGroupWith(groupWithConfiguration);
        }
    }
}
 

/**
 * Check if the current (leaf) element is a match with the filter text. The default behavior checks that the label of
 * the element is a match. Subclasses should override this method.
 *
 * @param viewer the viewer that contains the element
 * @param element the tree element to check
 * @return true if the given element's label matches the filter text
 */
public boolean isLeafMatch(Viewer viewer, Object element) {
   String labelText = ((ILabelProvider) ((StructuredViewer) viewer).getLabelProvider()).getText(element);

   if (labelText == null) {
      return false;
   }
   return wordMatches(labelText);
}
 

public void fillFilters(StructuredViewer viewer) {
	ViewerFilter workingSetFilter= fFilterActionGroup.getWorkingSetFilter();
	if (fMode == SHOW_PROJECTS) {
		viewer.addFilter(workingSetFilter);
	} else {
		viewer.removeFilter(workingSetFilter);
	}
}
 

/**
 * Specifies which action will be run when double clicking on the viewer.
 *
 * @param action
 *          the IAction to add
 */
private void hookDoubleClickAction(final IAction action, StructuredViewer viewer) {
  viewer.addDoubleClickListener(new IDoubleClickListener() {
    @Override
    public void doubleClick(DoubleClickEvent event) {
      action.run();
    }
  });
}
 

/**
 * @see org.eclipse.jface.viewers.StructuredViewer#doFindInputItem(java.lang.Object)
 */
protected Widget doFindInputItem(Object element) {
	Viewer viewer = getViewerForItem(pshelf.getSelection());
	if (viewer instanceof StructuredViewer) {
		return (Widget) ReflectionUtils.callMethod(viewer, "doFindInputItem", element);
	}
	return null;
}
 

public JdtViewerDropSupport(StructuredViewer viewer) {
	fViewer= viewer;

	fDelegatingDropAdapter= new DelegatingDropAdapter();
	fReorgDropListener= new SelectionTransferDropAdapter(fViewer);
	fDelegatingDropAdapter.addDropTargetListener(fReorgDropListener);
	fDelegatingDropAdapter.addDropTargetListener(new FileTransferDropAdapter(fViewer));
	fDelegatingDropAdapter.addDropTargetListener(new PluginTransferDropAdapter(fViewer));

	fStarted= false;
}
 

/**
 * This creates a context menu for the viewer and adds a listener as well registering the menu for extension.
 * <!-- begin-user-doc -->
 * <!-- end-user-doc -->
 * @generated
 */
protected void createContextMenuFor(StructuredViewer viewer) {
	MenuManager contextMenu = new MenuManager("#PopUp");
	contextMenu.add(new Separator("additions"));
	contextMenu.setRemoveAllWhenShown(true);
	contextMenu.addMenuListener(this);
	Menu menu= contextMenu.createContextMenu(viewer.getControl());
	viewer.getControl().setMenu(menu);
	getSite().registerContextMenu(contextMenu, new UnwrappingSelectionProvider(viewer));

	int dndOperations = DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK;
	Transfer[] transfers = new Transfer[] { LocalTransfer.getInstance(), LocalSelectionTransfer.getTransfer(), FileTransfer.getInstance() };
	viewer.addDragSupport(dndOperations, transfers, new ViewerDragAdapter(viewer));
	viewer.addDropSupport(dndOperations, transfers, new EditingDomainViewerDropAdapter(editingDomain, viewer));
}
 

@Override
protected StructuredViewer createViewer(Composite parent) {
	ProblemTreeViewer result= new ProblemTreeViewer(parent, SWT.MULTI);
	fFilterUpdater= new FilterUpdater(result);
	ResourcesPlugin.getWorkspace().addResourceChangeListener(fFilterUpdater);
	return result;
}