org.eclipse.jface.viewers.TreeViewer#setAutoExpandLevel ( )源码实例Demo

protected TreeViewer createTreeViewer(Composite parent, int style) {
	Tree tree = new Tree(parent, SWT.SINGLE | (style & ~SWT.MULTI));
	GridData gd = new GridData(GridData.FILL_BOTH);
	gd.heightHint = tree.getItemHeight() * 12;
	tree.setLayoutData(gd);

	final TreeViewer treeViewer = new TreeViewer(tree);
	treeViewer.addFilter(new NamePatternFilter());

	treeViewer.setContentProvider(contentProvider);
	filterAndSorter.setComparator(comparator);
	contentProvider.setFilterAndSorter(filterAndSorter);
	treeViewer.setLabelProvider(labelProvider);
	treeViewer.setAutoExpandLevel(2);
	return treeViewer;
}
 

/**
 * Creates tree viewer to manage content
 * 
 * @param parent
 *            parent control
 */
private void createTreeViewer(Composite parent) {
	int style = SWT.H_SCROLL | SWT.V_SCROLL;
	// Create the tree
	Tree widget = new Tree(parent, style);
	// Configure the layout
	GridData data = new GridData(GridData.FILL_BOTH);
	data.heightHint = widget.getItemHeight() * 12;
	widget.setLayoutData(data);

	treeViewer = new TreeViewer(widget);
	namePatternFilter = new QuickOutlineNamePatternFilter();
	treeViewer.addFilter(namePatternFilter);
	treeContentProvider = getContentProvider();
	treeViewer.setContentProvider(treeContentProvider);
	treeLabelProvider = getLabelProvider();
	treeViewer.setLabelProvider(treeLabelProvider);
	treeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
	treeViewer.setUseHashlookup(true);
	treeViewer.setInput(getInitialInput());
}
 

/**
 * Constructor
 *
 * @param parent
 *            Parent composite
 * @param checkboxTree
 *            <code>TriStateFilteredTree</code> wrapping a
 *            <code>CheckboxTreeViewer</code>
 * @param legendColumnIndex
 *            index of the legend column (-1 if none)
 */
private AbstractSelectTreeViewer(Composite parent, TriStateFilteredCheckboxTree checkboxTree,
        int legendIndex, String id) {
    super(parent, checkboxTree.getViewer());

    TreeViewer treeViewer = checkboxTree.getViewer();
    treeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
    treeViewer.setComparator(COMPARATOR);
    if (treeViewer instanceof CheckboxTreeViewer) {
        ((CheckboxTreeViewer) treeViewer).addCheckStateListener(new CheckStateChangedListener());
    }
    treeViewer.addSelectionChangedListener(new TreeViewerSelectionListener());
    checkboxTree.getFilterControl().addModifyListener(e -> saveViewContext());
    fCheckboxTree = checkboxTree;
    fLegendIndex = legendIndex;
    fId = id;
    fLogCategory = fId + LOG_CATEGORY_SUFFIX;
    setLabelProvider(new DataProviderTreeLabelProvider());
    fInstanceId = INSTANCE_ID_SEQUENCE.incrementAndGet();
}
 

/**
 * Constructor
 *
 * @param parent
 *            Parent composite
 * @param checkboxTree
 *            <code>TriStateFilteredTree</code> wrapping a
 *            <code>CheckboxTreeViewer</code>
 * @param legendColumnIndex
 *            index of the legend column (-1 if none)
 */
private AbstractSelectTreeViewer2(Composite parent, TriStateFilteredCheckboxTree checkboxTree,
        int legendIndex, String id) {
    super(parent, checkboxTree.getViewer());

    TreeViewer treeViewer = checkboxTree.getViewer();
    treeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
    treeViewer.setComparator(COMPARATOR);
    if (treeViewer instanceof CheckboxTreeViewer) {
        ((CheckboxTreeViewer) treeViewer).addCheckStateListener(new CheckStateChangedListener());
    }
    treeViewer.addSelectionChangedListener(new TreeViewerSelectionListener());
    checkboxTree.getFilterControl().addModifyListener(e -> saveViewContext());
    fCheckboxTree = checkboxTree;
    fLegendIndex = legendIndex;
    fId = id;
    fLogCategory = fId + LOG_CATEGORY_SUFFIX;
    fInstanceId = INSTANCE_ID_SEQUENCE.incrementAndGet();
    setLabelProvider(new DataProviderTreeLabelProvider());
}
 

@Override
protected Control createDialogArea ( final Composite parent )
{
    setTitle ( "Select driver" );
    setMessage ( "Choose a driver from the world model" );

    final Composite composite = (Composite)super.createDialogArea ( parent );

    final ObservablesManager mgr = new ObservablesManager ();

    final TreeViewer viewer = new TreeViewer ( composite );
    viewer.setAutoExpandLevel ( 2 );
    viewer.getControl ().setLayoutData ( new GridData ( SWT.FILL, SWT.FILL, true, true ) );
    viewer.addDoubleClickListener ( new IDoubleClickListener () {

        @Override
        public void doubleClick ( final DoubleClickEvent event )
        {
            handleDoubleClick ();
        }
    } );

    mgr.runAndCollect ( new Runnable () {

        @Override
        public void run ()
        {
            createDataModel ( viewer );
        }
    } );

    return composite;
}
 

protected TreeViewer createCallHierarchyViewer(Composite parent) {
	TreeViewer treeViewer = new TreeViewer(parent);
	treeViewer.getControl().setLayoutData(new GridData(GridData.FILL_BOTH));
	treeViewer.setUseHashlookup(true);
	treeViewer.setAutoExpandLevel(2);
	treeViewer.setLabelProvider(createHierarchyLabelProvider());
	treeViewer.setContentProvider(createHierarchyContentProvider());
	return treeViewer;
}
 

@Override
public void createControl(Composite parent) {
    super.createControl(parent);

    TreeViewer viewer = getTreeViewer();
    viewer.setContentProvider(new OutlineContentProvider());
    viewer.setLabelProvider(new OutlineStyledLabelProvider());
    viewer.addSelectionChangedListener(this);
    viewer.setAutoExpandLevel(2);
    viewer.setUseHashlookup(true);

    if (currentInput != null) {
        setInput(currentInput);
    }
}
 

/**
 * {@inheritDoc}
 */
@Override
protected TreeViewer createTreeViewer(Composite parent, int style) {
	Tree tree= new Tree(parent, SWT.SINGLE | (style & ~SWT.MULTI));
	GridData gd= new GridData(GridData.FILL_BOTH);
	gd.heightHint= tree.getItemHeight() * 12;
	tree.setLayoutData(gd);

	final TreeViewer treeViewer= new OutlineTreeViewer(tree);

	// Hard-coded filters
	treeViewer.addFilter(new NamePatternFilter());
	treeViewer.addFilter(new MemberFilter());

	fInnerLabelProvider= new OutlineLabelProvider();
	fInnerLabelProvider.addLabelDecorator(new ProblemsLabelDecorator(null));
	IDecoratorManager decoratorMgr= PlatformUI.getWorkbench().getDecoratorManager();
	if (decoratorMgr.getEnabled("org.eclipse.jdt.ui.override.decorator")) //$NON-NLS-1$
		fInnerLabelProvider.addLabelDecorator(new OverrideIndicatorLabelDecorator(null));

	treeViewer.setLabelProvider(new ColoringLabelProvider(fInnerLabelProvider));

	fLexicalSortingAction= new LexicalSortingAction(treeViewer);
	fSortByDefiningTypeAction= new SortByDefiningTypeAction(treeViewer);
	fShowOnlyMainTypeAction= new ShowOnlyMainTypeAction(treeViewer);
	fCategoryFilterActionGroup= new CategoryFilterActionGroup(treeViewer, getId(), getInputForCategories());

	fOutlineContentProvider= new OutlineContentProvider(false);
	treeViewer.setContentProvider(fOutlineContentProvider);
	fOutlineSorter= new OutlineSorter();
	treeViewer.setComparator(fOutlineSorter);
	treeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);


	treeViewer.getTree().addKeyListener(getKeyAdapter());

	return treeViewer;
}
 

private void createDataField( )
{
	Composite dataField = new Composite( this, SWT.NONE );
	dataField.setLayoutData( new GridData( GridData.FILL_BOTH ) );
	dataField.setLayout( new GridLayout( ) );

	Label dataLabel = new Label( dataField, SWT.NONE );
	dataLabel.setText( Messages.getString( "GroupsPage.Label.DataField" ) ); //$NON-NLS-1$
	dataFieldsViewer = new TreeViewer( dataField, SWT.SINGLE
			| SWT.H_SCROLL
			| SWT.V_SCROLL
			| SWT.BORDER );
	cubeLabelProvider = getCubeLabelProvider( );
	cubeLabelProvider.setProivderViewer( true );
	dataFieldsViewer.setLabelProvider( cubeLabelProvider );
	dataFieldsViewer.setContentProvider( dataContentProvider );
	dataFieldsViewer.setAutoExpandLevel( 3 );
	GridData gd = new GridData( GridData.FILL_BOTH );
	dataFieldsViewer.getTree( ).setLayoutData( gd );
	( (GridData) dataFieldsViewer.getTree( ).getLayoutData( ) ).heightHint = 250;
	( (GridData) dataFieldsViewer.getTree( ).getLayoutData( ) ).widthHint = 200;
	dataFieldsViewer.addSelectionChangedListener( new ISelectionChangedListener( ) {

		public void selectionChanged( SelectionChangedEvent event )
		{
			updateButtons( );
		}

	} );

	final DragSource fieldsSource = new DragSource( dataFieldsViewer.getTree( ),
			operations );
	fieldsSource.setTransfer( types );
	fieldsSource.addDragListener( new CustomDragListener( dataFieldsViewer ) );

}
 

/**
 * Parsed partition creates an outline that shows imports/classes/methods
 */
protected void createParsedOutline() {
    final TreeViewer tree = getTreeViewer();
    IDocumentProvider provider = editorView.getDocumentProvider();
    document = provider.getDocument(editorView.getEditorInput());
    tree.setAutoExpandLevel(2);
    tree.setContentProvider(new ParsedContentProvider());
    tree.setLabelProvider(new ParsedLabelProvider(imageCache));
    tree.setInput(getOutlineModel().getRoot());
}
 

@Override
protected Control createDialogArea(Composite parent) {
    Control composite = super.createDialogArea(parent);

    if (composite instanceof Composite) {
        updateCompositeLayout((Composite) composite);
    }

    TreeViewer treeViewer = getTreeViewer();
    treeViewer.addFilter(new ViewerFilter() {

        @Override
        public boolean select(Viewer viewer, Object parentElement, Object element) {
            return matchItemToShowInTree(element);
        }
    });
    treeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
    treeViewer.expandAll();

    if (this.initialFilter.length() > 0) {
        this.text.setText(this.initialFilter);
        this.text.setSelection(this.initialFilter.length());
        this.setFilter(this.initialFilter, new NullProgressMonitor(), true);
    }

    notifyViewCreated();
    onControlCreated.call(this.text);
    onControlCreated.call(this.getTreeViewer());

    return composite;
}
 

protected TreeViewer createTreeViewer(Composite parent) {
	treeViewer = new TreeViewer(parent, SWT.MULTI);
	
	treeViewer.setAutoExpandLevel(TreeViewer.ALL_LEVELS);
	// TODO: allow certain StructureElements to not be initially expanded
	treeViewer.setUseHashlookup(true);
	
	setupTreeViewerListeners();
	createTreeViewerMenu();
	
	return treeViewer;
}
 

@Override
protected Control createDialogArea ( final Composite parent )
{
    setTitle ( "Select master server" );
    setMessage ( "Choose a master server from the world model" );

    final Composite composite = (Composite)super.createDialogArea ( parent );

    final Composite wrapper = new Composite ( composite, SWT.NONE );
    wrapper.setLayout ( new GridLayout ( 1, true ) );
    wrapper.setLayoutData ( new GridData ( SWT.FILL, SWT.FILL, true, true ) );

    final ObservablesManager mgr = new ObservablesManager ();

    final TreeViewer viewer = new TreeViewer ( wrapper );
    viewer.setAutoExpandLevel ( 2 );
    viewer.getControl ().setLayoutData ( new GridData ( SWT.FILL, SWT.FILL, true, true, 1, 1 ) );
    viewer.addDoubleClickListener ( new IDoubleClickListener () {

        @Override
        public void doubleClick ( final DoubleClickEvent event )
        {
            handleDoubleClick ();
        }
    } );

    final Button add = new Button ( wrapper, SWT.RADIO );
    add.setText ( "Add master server" );
    add.setToolTipText ( "Assign the component to the selected master server in addition" );

    this.replace = new Button ( wrapper, SWT.RADIO );
    this.replace.setText ( "Replace all master servers" );
    this.replace.setToolTipText ( "Assign the component soley to the selected master server" );
    this.replace.setSelection ( true );

    this.delete = new Button ( wrapper, SWT.RADIO );
    this.delete.setText ( "Remove master server" );
    this.delete.setToolTipText ( "Un-assign the component from the selected master server" );

    mgr.runAndCollect ( new Runnable () {

        @Override
        public void run ()
        {
            createDataModel ( viewer );
        }
    } );

    if ( this.lastSelection != null )
    {
        viewer.setSelection ( new StructuredSelection ( this.lastSelection ) );
        viewer.reveal ( this.lastSelection );
    }

    return composite;
}
 

/**
 * Create the composite.
 * 
 * @param parent
 * @param style
 */
public CodeRecommendationResultsView() {
	super(SWT.NONE);
	setBackgroundMode(SWT.INHERIT_FORCE);
	setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE));
	setLayout(new FillLayout(SWT.HORIZONTAL));

	treeViewer = new TreeViewer(this, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
	treeViewer.setAutoExpandLevel(3);
	Tree tree = treeViewer.getTree();
	tree.setHeaderVisible(true);

	TreeViewerColumn treeViewerColumn = new TreeViewerColumn(treeViewer, SWT.NONE);
	TreeColumn trclmnCodeRecommendations = treeViewerColumn.getColumn();
	trclmnCodeRecommendations.setResizable(false);
	trclmnCodeRecommendations.setText("Code recommendations");

	treeViewer.setContentProvider(contentProvider = new TreeContentProvider());
	treeViewer.setLabelProvider(new DelegatingStyledCellLabelProvider(labelProvider = new TreeLabelProvider()));

	tree.addSelectionListener(new SelectionAdapter() {
		@Override
		public void widgetSelected(SelectionEvent e) {
			TreeItem item = (TreeItem) e.item;
			Object data = item.getData();

			if (data instanceof ICodeRecommendationElement) {
				ICodeRecommendationElement element = (ICodeRecommendationElement) data;
				eventManager.invoke(l -> l.onCodeRecommendationSelected(element));
			}
		}
	});

	treeViewer.addDoubleClickListener(new IDoubleClickListener() {
		@Override
		public void doubleClick(DoubleClickEvent event) {
			TreeViewer viewer = (TreeViewer) event.getViewer();
			IStructuredSelection thisSelection = (IStructuredSelection) event.getSelection();
			Object selectedNode = thisSelection.getFirstElement();
			if (selectedNode instanceof CodeRecommendationTarget) {
				CodeRecommendationTarget target = (CodeRecommendationTarget) selectedNode;

				eventManager.invoke(l -> l.onTargetDoubleClicked(target));
			}
		}
	});

	createContextMenu(treeViewer);
}
 

@Override
protected TreeViewer createTreeViewer(final Composite parent, final int style) {
	final TreeViewer viewer = super.createTreeViewer(parent, style);
	viewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
	return viewer;
}