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

        bookmarksProvider = new BookmarksContentProvider();
        bookmarksTree.setContentProvider(bookmarksProvider);
        getSite().getWorkbenchWindow().getPartService().addPartListener(bookmarksProvider);
        labelProvider = new BookmarksLabelProvider();
        bookmarksTree.setLabelProvider(labelProvider);
        bookmarksTree.setSorter(new ViewerSorter());
        bookmarksTree.setInput(bookmarksProvider);
        bookmarksTree.setAutoExpandLevel(2);
        bookmarksTree.addDoubleClickListener(new BookmarkAction());
        bookmarksTree.addDoubleClickListener(new IDoubleClickListener(){

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                }
            }


        });


        tableViewer.setSorter(new ViewerSorter(){
            @Override
            public int compare( Viewer viewer, Object e1, Object e2 ) {
                TableDescriptor d1 = (TableDescriptor) e1;
                TableDescriptor d2 = (TableDescriptor) e2;
                return d1.name.compareTo(d2.name);

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        addDoubleCickListener();
        setGlobalActions();
    }


    private void setTreeSorter() {
        treeViewer.setSorter(new ViewerSorter(){
            ViewerLayerSorter layerSorter = new ViewerLayerSorter();
            /**
             * @see org.eclipse.jface.viewers.ViewerSorter#compare(org.eclipse.jface.viewers.Viewer,
             *      java.lang.Object, java.lang.Object)
             */

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            public void selectionChanged( SelectionChangedEvent event ) {
                setDetails();
            }
        });
        
        viewer.setSorter(new ViewerSorter(){
             @Override
            public void sort( Viewer viewer, Object[] elements ) {
                Arrays.sort(elements, new Comparator<Object>(){


                    public int compare( Object o1, Object o2 ) {

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        enableableControls.add(categorySelectorLabel);


        final ComboViewer combo = new ComboViewer(parent, SWT.READ_ONLY);
        //Default sorter for elements in ComboViewer.
        //Elements will be displayed in alphabetical order
        combo.setSorter(new ViewerSorter());
        data = new GridData(GridData.FILL_HORIZONTAL);
        combo.getControl().setLayoutData(data);
        enableableControls.add(combo.getControl());


        final Map namesToDescriptors = new HashMap();

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      if (viewer instanceof TableViewer){
        TableViewer tableViewer= (TableViewer) viewer;
        if (tableViewer.getTable().isDisposed()) {
          return;
        }
        tableViewer.setSorter(new ViewerSorter() {
          public int compare(Viewer iviewer, Object e1, Object e2) {
            if (e1 == null) {
              return -1;
            } else if (e2 == null) {
              return 1;

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    fLocationsViewer = new TreeViewer(comp);
    gd = new GridData(GridData.FILL_BOTH);
    gd.heightHint = 6;
    fLocationsViewer.getControl().setLayoutData(gd);
    fLocationsContentProvider = new ManLocationsContentProvider();
    fLocationsViewer.setSorter(new ViewerSorter());
    fLocationsViewer.setContentProvider(fLocationsContentProvider);
    fLocationsViewer.setLabelProvider(getLabelProvider());
    fLocationsViewer.setInput(this);
    fLocationsViewer.addSelectionChangedListener(this);

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    public void createPartControl(Composite parent) {
        viewer = multiColumnViewer(parent);


        viewer.setContentProvider(new MarkerContentProvider());
        viewer.setLabelProvider(new MarkerLabelProvider());
        viewer.setSorter(new ViewerSorter());
        viewer.setInput(ResourcesPlugin.getWorkspace());


        viewer.addSelectionChangedListener(this);
    }

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        data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
        data.widthHint = ( int ) ( SIZING_SELECTION_WIDGET_WIDTH * 0.4 );
        availableObjectClassesViewer.getTable().setLayoutData( data );
        availableObjectClassesViewer.setContentProvider( new ArrayContentProvider() );
        availableObjectClassesViewer.setLabelProvider( labelProvider );
        availableObjectClassesViewer.setSorter( new ViewerSorter() );
        availableObjectClassesViewer.addFilter( new InstantSearchFilter( availableObjectClassesInstantSearch ) );
        availableObjectClassesViewer.setInput( availableObjectClasses );
        availableObjectClassesViewer.addDoubleClickListener( new IDoubleClickListener()
        {
            public void doubleClick( DoubleClickEvent event )
            {
                add( event.getSelection() );
            }
        } );
        availableObjectClassesViewer.getTable().addKeyListener( new KeyAdapter()
        {
            public void keyPressed( KeyEvent e )
            {
                if ( e.keyCode == SWT.ARROW_UP )
                {
                    if ( availableObjectClassesViewer.getTable().getSelectionIndex() <= 0 )
                    {
                        availableObjectClassesInstantSearch.setFocus();
                    }
                }
            }
        } );


        Composite buttonComposite = new Composite( composite, SWT.NONE );
        gl = new GridLayout( 1, true );
        buttonComposite.setLayout( gl );
        data = new GridData( GridData.FILL_BOTH );
        data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
        // data.widthHint = (int)(SIZING_SELECTION_WIDGET_WIDTH * 0.2);
        data.horizontalAlignment = SWT.CENTER;
        buttonComposite.setLayoutData( data );
        Label label0 = new Label( buttonComposite, SWT.NONE );
        data = new GridData();
        data.grabExcessHorizontalSpace = true;
        data.grabExcessVerticalSpace = true;
        label0.setLayoutData( data );
        addButton = BaseWidgetUtils.createButton( buttonComposite, "&Add", 1 );
        removeButton = BaseWidgetUtils.createButton( buttonComposite, "&Remove", 1 );
        Label label3 = new Label( buttonComposite, SWT.NONE );
        data = new GridData();
        data.grabExcessHorizontalSpace = true;
        data.grabExcessVerticalSpace = true;
        label3.setLayoutData( data );


        addButton.addSelectionListener( new SelectionAdapter()
        {
            public void widgetSelected( SelectionEvent e )
            {
                add( availableObjectClassesViewer.getSelection() );
            }
        } );


        removeButton.addSelectionListener( new SelectionAdapter()
        {
            public void widgetSelected( SelectionEvent e )
            {
                remove( selectedObjectClassesViewer.getSelection() );
            }
        } );


        selectedObjectClassesViewer = new TableViewer( composite );
        data = new GridData( GridData.FILL_BOTH );
        data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
        data.widthHint = ( int ) ( SIZING_SELECTION_WIDGET_WIDTH * 0.4 );
        selectedObjectClassesViewer.getTable().setLayoutData( data );
        selectedObjectClassesViewer.setContentProvider( new ArrayContentProvider() );
        selectedObjectClassesViewer.setLabelProvider( labelProvider );
        selectedObjectClassesViewer.setSorter( new ViewerSorter() );
        selectedObjectClassesViewer.setInput( selectedObjectClasses );
        selectedObjectClassesViewer.addDoubleClickListener( new IDoubleClickListener()
        {
            public void doubleClick( DoubleClickEvent event )
            {

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    treeViewer.addSelectionChangedListener(new ISelectionChangedListener() {
      public void selectionChanged(SelectionChangedEvent event) {
        selectedClass = (ToolComponent) ((TreeSelection)event.getSelection()).getFirstElement();
      }
    });
    treeViewer.setSorter(new ViewerSorter());
    Tree resultsTree = treeViewer.getTree();
    resultsTree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
    treeViewer.setContentProvider(new ITreeContentProvider() {
      
      @Override

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