Examples of org.eclipse.jface.viewers.ViewerSorter

org.eclipse.jface.viewers.ViewerSorter
A viewer sorter is used by a {@link StructuredViewer} to reorder 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.

It is recommended to use ViewerComparator instead.
@see IStructuredContentProvider @see StructuredViewer

    viewer = new TableViewer(composite);
    viewer.getTable().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    viewer.setUseHashlookup(true);
    viewer.setLabelProvider(new LabelProvider());
    viewer.setContentProvider(new ContentProvider());
    viewer.setSorter(new ViewerSorter());
    viewer.addSelectionChangedListener(subscribeAction);
    viewer.getControl().setMenu(menuManager.createContextMenu(viewer.getControl()));
    
    sharedListViewer = new TableViewer(composite);
    sharedListViewer.getTable().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

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    versionViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER);
    versionViewer.getTable().setLayoutData(gd);
    versionViewer.setContentProvider(new VersionContentProvider());
    versionViewer.setLabelProvider(new VersionLabelProvider());
    versionViewer.setSorter(new ViewerSorter());


    versionViewer.addCheckStateListener(new ICheckStateListener() {
      public void checkStateChanged(final CheckStateChangedEvent event) {
        if (event.getChecked()) {
          versionViewer.setCheckedElements(new Object[] { event.getElement() });

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    versionViewer = CheckboxTableViewer.newCheckList(client, SWT.BORDER);
    versionViewer.getTable().setLayoutData(data);
    versionViewer.setContentProvider(new VersionContentProvider());
    versionViewer.setLabelProvider(new VersionLabelProvider());
    versionViewer.setSorter(new ViewerSorter());


    versionViewer.addCheckStateListener(new ICheckStateListener() {
      public void checkStateChanged(final CheckStateChangedEvent event) {
        if (event.getChecked()) {
          versionViewer.setCheckedElements(new Object[] { event.getElement() });

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    versionViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER);
    versionViewer.getTable().setLayoutData(gd);
    versionViewer.setContentProvider(new VersionContentProvider());
    versionViewer.setLabelProvider(new VersionLabelProvider());
    versionViewer.setSorter(new ViewerSorter());


    versionViewer.addCheckStateListener(new ICheckStateListener() {
      public void checkStateChanged(final CheckStateChangedEvent event) {
        if (event.getChecked()) {
          versionViewer.setCheckedElements(new Object[] { event.getElement() });

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    versionViewer = CheckboxTableViewer.newCheckList(composite, SWT.BORDER);
    versionViewer.getTable().setLayoutData(gd);
    versionViewer.setContentProvider(new VersionContentProvider());
    versionViewer.setLabelProvider(new VersionLabelProvider());
    versionViewer.setSorter(new ViewerSorter());


    versionViewer.addCheckStateListener(new ICheckStateListener() {
      public void checkStateChanged(final CheckStateChangedEvent event) {
        if (event.getChecked()) {
          versionViewer.setCheckedElements(new Object[] { event.getElement() });

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  private void createTreeViewer() {
    treeViewer = new TreeViewer(pagebook, SWT.NONE);
    treeViewer.setContentProvider(new LiveBeansTreeContentProvider(this));
    treeViewer.setLabelProvider(new LiveBeansTreeLabelProvider());
    treeViewer.setSorter(new ViewerSorter());


    treeViewer.addDoubleClickListener(new IDoubleClickListener() {
      public void doubleClick(DoubleClickEvent event) {
        if (openBeanDefAction != null && openBeanDefAction.isEnabled()) {
          openBeanDefAction.run();

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        }
        return null;
      }
    });


    treeViewer.setSorter(new ViewerSorter() {
      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        if (e1 instanceof TemplateCategory && e2 instanceof Template) {
          return -1;
        }

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    tree = new CheckboxTreeViewer(composite);
    tree.setUseHashlookup(true);
    final ITreeContentProvider treeContentProvider = new SpringExplorerAdaptingContentProvider();
    tree.setContentProvider(treeContentProvider);
    tree.setLabelProvider(new SpringExplorerAdaptingLabelProvider());
    tree.setSorter(new ViewerSorter());
    tree.setInput(IDEWorkbenchPlugin.getPluginWorkspace().getRoot());


    data = new GridData(GridData.FILL_BOTH | GridData.GRAB_VERTICAL);
    data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
    data.widthHint = SIZING_SELECTION_WIDGET_WIDTH;

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   * Sorts by the <code>String</code> columnKey.
   * 
   * @param columnKey the <code>String</code> columnKey.
   */
  protected void sortBy(String columnKey) {
    ViewerSorter viewerSorter = ReviewPropertyViewerSorter.getViewerSorter(columnKey);
    if (viewerSorter != null) {
      ViewerSorter previousSorter = tableViewer.getSorter();
      if (previousSorter == viewerSorter) {
        ReviewPropertyViewerSorter.setReverse(!ReviewPropertyViewerSorter.isReverse());
        // Resets sorter.
        tableViewer.setSorter(null);
      }

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