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


                validate();
            }
        });


        treeViewer.setComparator(new ViewerComparator() {


            @Override
            public int category(Object element) {
                if (element instanceof ComponentTypeNode) {
                    return 1;

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          cell.setForeground(filter.isEnabled() ? display.getSystemColor(SWT.COLOR_BLACK) : display.getSystemColor(SWT.COLOR_DARK_GRAY));
      }
    });


    /* Sort */
    fViewer.setComparator(new ViewerComparator() {
      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        ISearchFilter filter1 = (ISearchFilter) e1;
        ISearchFilter filter2 = (ISearchFilter) e2;

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    if (fGrouping.needsRefresh(visibleEvents, true))
      return true;


    /* Return early if refresh is required anyways for Sorter */
    if (fFeedView.isTableViewerVisible()) { //Only makes sense if Browser not maximized
      ViewerComparator sorter = fTableViewer.getComparator();
      if (sorter instanceof NewsComparator && ((NewsComparator) sorter).needsRefresh(visibleEvents))
        return true;
    }


    /* Update in Table-Viewer */

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        return OwlUI.getImage(fResources, OwlUI.BOOKMARK_SET);
      }
    });


    /* Sort by ID to show latest Set at bottom */
    fViewer.setComparator(new ViewerComparator() {
      @Override
      public int compare(Viewer viewer, Object e1, Object e2) {
        IFolder folder1 = (IFolder) e1;
        IFolder folder2 = (IFolder) e2;

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    ((GridData) fFolderViewerContainer.getLayoutData()).heightHint = fViewerHeight;
    ((GridData) fFolderViewerContainer.getLayoutData()).exclude = fExpandable;


    /* Sort by Name if set so */
    if (Owl.getPreferenceService().getGlobalScope().getBoolean(DefaultPreferences.BE_SORT_BY_NAME)) {
      fFolderViewer.setComparator(new ViewerComparator() {
        @Override
        public int compare(Viewer viewer, Object e1, Object e2) {
          IFolder f1 = (IFolder) e1;
          IFolder f2 = (IFolder) e2;

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    /* Content Provider */
    boolean hideCompleted = fPreferences.getBoolean(DefaultPreferences.HIDE_COMPLETED_DOWNLOADS);
    fViewer.setContentProvider(new org.eclipse.ui.internal.progress.ProgressViewerContentProvider(fViewer, false, !hideCompleted));


    /* Comparator */
    fViewer.setComparator(new ViewerComparator() {
      @SuppressWarnings("unchecked")
      @Override
      public int compare(Viewer viewer, Object obj1, Object obj2) {
        if (obj1 instanceof Comparable && obj2 instanceof Comparable)
          return ((Comparable) obj1).compareTo(obj2);

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        tableViewer.setLabelProvider(labelProvider);
        tableViewer.setContentProvider(ArrayContentProvider.getInstance());
        tableViewer.addFilter(elementFilter);
        tableViewer.setInput(elements);


        tableViewer.setComparator(new ViewerComparator());


        hookListener();


        return composite;
    }

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        tableViewer.setLabelProvider(labelProvider);
        tableViewer.setContentProvider(ArrayContentProvider.getInstance());
        tableViewer.setInput(elements);
        tableViewer.setCheckedElements(elements);


        tableViewer.setComparator(new ViewerComparator());


        hookListener();


        return composite;
    }

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        pm.addToRoot(new PreferenceNode(PortfolioPlugin.PLUGIN_ID + ".updates", new UpdatePreferencePage())); //$NON-NLS-1$
        
        PreferenceDialog dialog = new PreferenceDialog(shell, pm);
        dialog.setPreferenceStore(PortfolioPlugin.getDefault().getPreferenceStore());
        dialog.create();
        dialog.getTreeViewer().setComparator(new ViewerComparator());
        dialog.getTreeViewer().expandAll();
        dialog.open();
    }

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   * Return a viewer sorter for looking at the jobs.
   * 
   * @return ViewerSorter
   */
  private ViewerComparator getViewerComparator() {
    return new ViewerComparator() {
      /*
       * (non-Javadoc)
       * 
       * @see org.eclipse.jface.viewers.ViewerComparator#compare(org.eclipse.jface.viewers.Viewer,
       *      java.lang.Object, java.lang.Object)

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