Examples of org.eclipse.jface.viewers.ViewerComparator

org.eclipse.jface.viewers.ViewerComparator
A viewer comparator is used by a {@link StructuredViewer} toreorder the elements provided by its content provider.
The default compare method compares elements using two steps. The first step uses the values returned from category. By default, all elements are in the same category. The second level is based on a case insensitive compare of the strings obtained from the content viewer's label provider via ILabelProvider.getText.

Subclasses may implement the isSorterProperty method; they may reimplement the category method to provide categorization; and they may override the compare methods to provide a totally different way of sorting elements.
@see IStructuredContentProvider @see StructuredViewer @since 3.2

    executedProbesColumn.setWidth(100);
    executedProbesColumn.setResizable(true);


    dataTable.setSortColumn(vmNameColumn);
    dataTable.setSortDirection(SWT.UP);
    dataTableViewer.setComparator(new ViewerComparator());
    dataTableViewer
        .setContentProvider(new AbstractExecutionDataContentProvider() {
          public Object[] getElements(ExecutionDataContent content) {
            return content.getExecutionData();
          }

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        provider.addFilterStatusListener( new ProviderFilterChangeHandler() );
        provider.addTypeChangeListener( new ProviderTypesChangeHandler() );
        NeoGraphLabelProvider labelProvider = NeoGraphLabelProviderWrapper.getInstance();
        labelProvider.createTableColumns( viewer );
        viewer.setLabelProvider( labelProvider );
        viewer.setComparator( new ViewerComparator(
                new RelationshipTypeSorter() ) );
        viewer.setInput( getViewSite() );
        Activator.getDefault().getGraphDbServiceManager().addServiceEventListener(
                new ServiceChangeHandler() );
        PlatformUI.getWorkbench().getHelpSystem().setHelp( viewer.getControl(),

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    private StructuredViewer createStylesViewer(Composite parent)
    {
        StructuredViewer stylesViewer = new ListViewer(parent, SWT.SINGLE
                | SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER);
        stylesViewer
                .setComparator(new ViewerComparator(Collator.getInstance()));
        stylesViewer.setLabelProvider(new LabelProvider()
        {
            @Override
            public String getText(Object element)
            {

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          return;
        final ElementTreeSelectionDialog dlg = new ElementTreeSelectionDialog(null, new ShowViewDialogLabelProvider(), new ShowViewDialogTreeContentProvider());
        dlg.setTitle(Messages.ViewShare_VIEWSHARE_VIEW_REQUEST_DIALOG_TITLE);
        dlg.setMessage(Messages.ViewShare_VIEWSHARE_VIEW_REQUEST_DIALOG_MESSAGE);
        dlg.addFilter(new ShowViewDialogViewerFilter());
        dlg.setComparator(new ViewerComparator());
        dlg.setValidator(new ISelectionStatusValidator() {
          public IStatus validate(Object[] selection) {
            for (int i = 0; i < selection.length; ++i)
              if (!(selection[i] instanceof IViewDescriptor))
                return new Status(IStatus.ERROR, Activator.PLUGIN_ID, 0, "", null); //$NON-NLS-1$

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  private ILabelProvider labelProvider;


  public void createPartControl(Composite parent) {
    viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
    viewer.setContentProvider(new ViewContentProvider());
    viewer.setComparator(new ViewerComparator() {
      public int compare(Viewer viewer, Object e1, Object e2) {
        if (e1 instanceof BatchModelChange) {
          BatchModelChange c1 = (BatchModelChange) e1;
          BatchModelChange c2 = (BatchModelChange) e2;

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  /**
   * Sorts by VM location.
   */
  private void sortByLocation() {
    fVMList.setComparator(new ViewerComparator() {
      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        if ((e1 instanceof IRooInstall) && (e2 instanceof IRooInstall)) {
          IRooInstall left = (IRooInstall) e1;
          IRooInstall right = (IRooInstall) e2;

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  /**
   * Sorts by VM name.
   */
  private void sortByName() {
    fVMList.setComparator(new ViewerComparator() {
      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        if ((e1 instanceof IRooInstall) && (e2 instanceof IRooInstall)) {
          IRooInstall left = (IRooInstall) e1;
          IRooInstall right = (IRooInstall) e2;

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    viewer.setInput(beanList);


    final BeanListSelectionDialog.BeanFilter filter = new BeanListSelectionDialog.BeanFilter(historyBeans);
    viewer.addFilter(filter);
    viewer.setComparator(new ViewerComparator() {


      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        IBean t1 = getCorrespondingTask(e1);
        IBean t2 = getCorrespondingTask(e2);

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  /**
   * Sorts by VM location.
   */
  private void sortByLocation() {
    fVMList.setComparator(new ViewerComparator() {
      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        if ((e1 instanceof IBootInstall) && (e2 instanceof IBootInstall)) {
          IBootInstall left = (IBootInstall) e1;
          IBootInstall right = (IBootInstall) e2;

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  /**
   * Sorts by VM name.
   */
  private void sortByName() {
    fVMList.setComparator(new ViewerComparator() {
      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        if ((e1 instanceof IBootInstall) && (e2 instanceof IBootInstall)) {
          IBootInstall left = (IBootInstall) e1;
          IBootInstall right = (IBootInstall) e2;

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