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

public void refreshRoot( )
{
	TreeViewer treeViewer = getTreeViewer( );

	if ( treeViewer != null && !treeViewer.getTree( ).isDisposed( ) )
	{
		ISelection selection = getSelection( );

		treeViewer.setSelection( null );
		treeViewer.setInput( getRootEntries( ) );
		handleTreeViewerRefresh( );
		if ( selection != null )
		{
			setSelection( selection );
		}
	}
}
 

@Override
protected Control createCustomArea(Composite parent) {
    final Composite container = new Composite(parent, parent.getStyle());
    container.setLayout(new GridLayout(1, false));
    container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

    fileText = createFilePathComposite(container, defaultFileName);

    final TreeViewer containerTreeViewer = new TreeViewer(container, SWT.BORDER);
    Tree tree = containerTreeViewer.getTree();
    final GridData gdTable = new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1);
    gdTable.minimumWidth = TABLE_MINIMUM_WIDTH;
    gdTable.minimumHeight = TABLE_MINIMUM_HEIGHT;
    tree.setLayoutData(gdTable);
    containerTreeViewer.setContentProvider(new WorkbenchContentProvider() {
        @Override
        public Object[] getChildren(Object element) {
            final List<Object> res = new ArrayList<>();
            for (Object obj : super.getChildren(element)) {
                if (obj instanceof IContainer
                    || (obj instanceof IFile && fileExtension.equals(((IFile) obj).getFileExtension()))) {
                    res.add(obj);
                }
            }
            return res.toArray();
        }
    });
    containerTreeViewer.setLabelProvider(new WorkbenchLabelProvider());
    containerTreeViewer.addSelectionChangedListener(new ContainerSelectionChangedListener());
    containerTreeViewer.setInput(ResourcesPlugin.getWorkspace().getRoot());
    if (defaultFileName != null && !defaultFileName.isEmpty()) {
        final IFile file = ResourcesPlugin.getWorkspace().getRoot().getFile(new Path(defaultFileName));
        containerTreeViewer.setSelection(new StructuredSelection(file));
    }

    return container;
}
 

@Override
protected Control createCustomArea(Composite parent) {
    final Composite container = new Composite(parent, parent.getStyle());
    container.setLayout(new GridLayout(1, false));
    container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

    final FilteredTree filteredTree = new FilteredTree(container, SWT.BORDER, new PatternFilter(), true);
    final TreeViewer treeViewer = filteredTree.getViewer();
    final Tree tree = treeViewer.getTree();
    final GridData gdTable = new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1);
    gdTable.minimumWidth = TABLE_MINIMUM_WIDTH;
    gdTable.minimumHeight = TABLE_MINIMUM_HEIGHT;
    tree.setLayoutData(gdTable);
    treeViewer.setContentProvider(new CollectionContentProvider());
    treeViewer.setLabelProvider(new LabelProvider());
    treeViewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            final Object selected = ((IStructuredSelection) event.getSelection()).getFirstElement();
            selectedType = (String) selected;
        }
    });
    treeViewer.setInput(getAvailableTypes(nsURIs));
    if (defaultType != null) {
        treeViewer.setSelection(new StructuredSelection(defaultType));
    }

    return container;
}
 

protected void newFolderButtonPressed() {
	NewFolderDialog dialog = new NewFolderDialog(getShell(),
			fSelectedContainer);
	if (dialog.open() == Window.OK) {
		TreeViewer treeViewer = getTreeViewer();
		treeViewer.refresh(fSelectedContainer);
		Object createdFolder = dialog.getResult()[0];
		treeViewer.reveal(createdFolder);
		treeViewer.setSelection(new StructuredSelection(createdFolder));
	}
}
 

/**
 * @param view
 * @param typeNames
 * @return
 */
protected IAction createAction(final IndexView view, final List<String> typeNames)
{
	IAction action = new Action()
	{
		@Override
		public void run()
		{
			TreeViewer treeViewer = view.getTreeViewer();

			if (treeViewer != null)
			{
				Object input = treeViewer.getInput();

				if (input instanceof IProject)
				{
					IProject project = (IProject) input;

					JSIndexQueryHelper queryHelper = new JSIndexQueryHelper(project);
					Collection<TypeElement> types = queryHelper.getTypes(typeNames.get(0), true);
					List<ClassElement> classes = JSTypeUtil.typesToClasses(types);

					if (!CollectionsUtil.isEmpty(classes))
					{
						ClassElement c = classes.get(0);

						treeViewer.setSelection(new StructuredSelection(c), true);
					}
				}
			}
		}
	};

	action.setText(Messages.JSIndexViewActionProvider_JumpToType);

	return action;
}
 

private void doNewButtonPressed() {
	Object newElement= fCreateTargetQuery.getCreatedTarget(fDestination);
	if (newElement != null) {
		TreeViewer viewer= getTreeViewer();
		ITreeContentProvider contentProvider= (ITreeContentProvider) viewer.getContentProvider();
		viewer.refresh(contentProvider.getParent(newElement));
		viewer.setSelection(new StructuredSelection(newElement), true);
		viewer.getTree().setFocus();
	}
}
 

protected void newFolderButtonPressed() {
	NewFolderDialog dialog= new NewFolderDialog(getShell(), fSelectedContainer);
	if (dialog.open() == Window.OK) {
		TreeViewer treeViewer= getTreeViewer();
		treeViewer.refresh(fSelectedContainer);
		Object createdFolder= dialog.getResult()[0];
		treeViewer.reveal(createdFolder);
		treeViewer.setSelection(new StructuredSelection(createdFolder));
	}
}
 

/**
 * {@inheritDoc}
 */
@Override
protected void configureTree(TreeViewer tree) {
	tree.setContentProvider(new JavaWorkingSetPageContentProvider());

	AppearanceAwareLabelProvider javaElementLabelProvider=
		new AppearanceAwareLabelProvider(
			AppearanceAwareLabelProvider.DEFAULT_TEXTFLAGS | JavaElementLabels.P_COMPRESSED,
			AppearanceAwareLabelProvider.DEFAULT_IMAGEFLAGS | JavaElementImageProvider.SMALL_ICONS
		);

	tree.setLabelProvider(new DecoratingJavaLabelProvider(javaElementLabelProvider));
	tree.setComparator(new JavaElementComparator());
	tree.addFilter(new EmptyInnerPackageFilter());

	tree.setInput(JavaCore.create(ResourcesPlugin.getWorkspace().getRoot()));

	if (getSelection() == null)
		return;

	Object[] selection= getInitialTreeSelection();
	if (selection.length > 0) {
		try {
			tree.getTree().setRedraw(false);

			for (int i= 0; i < selection.length; i++) {
				tree.expandToLevel(selection[i], 0);
			}
			tree.setSelection(new StructuredSelection(selection));
		} finally {
			tree.getTree().setRedraw(true);
		}
	}
}
 

@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;
}
 

/**
 * Creates the UI part of the page.
 *
 * @param parent  the parent of the created widgets
 */
public void createControl(Composite parent) {
	Composite composite = createComposite(parent, 1);
	// set F1 help
	PlatformUI.getWorkbench().getHelpSystem().setHelp(composite, IHelpContextIds.MOVE_RENAME_REMOTE_RESOURCE_PAGE);

	Listener listener = new Listener() {
		public void handleEvent(Event event) {
               resourceName = resourceNameText.getText();
			validateFields();
		}
	};

       // the text field for the parent folder
	createLabel(composite, Policy.bind("MoveRemoteResourceWizardMainPage.selectParentUrl")); //$NON-NLS-1$

       urlParentText = createTextField(composite);
       urlParentText.addListener(SWT.Selection, listener);
       urlParentText.addListener(SWT.Modify, listener);
       urlParentText.setEditable(false);


       // Create drill down.
       DrillDownComposite drillDown = new DrillDownComposite(composite, SWT.BORDER);
       GridData spec = new GridData(GridData.FILL_BOTH);
       spec.widthHint = LIST_WIDTH;
       spec.heightHint = LIST_HEIGHT;
       drillDown.setLayoutData(spec);

       // Create tree viewer inside drill down.
       viewer = new TreeViewer(drillDown, SWT.H_SCROLL | SWT.V_SCROLL);
       drillDown.setChildTree(viewer);
       viewer.setLabelProvider(new WorkbenchLabelProvider());
       viewer.setContentProvider(new RemoteContentProvider());
       viewer.setInput(new AllRootsElement());
       viewer.addFilter(RepositoryFilters.FOLDERS_ONLY);
       viewer.addSelectionChangedListener(treeSelectionChangedListener);

       // the text field for the resource name
       createLabel(composite, Policy.bind("MoveRemoteResourceWizardMainPage.resourceName")); //$NON-NLS-1$

       resourceNameText = createTextField(composite);
       resourceNameText.addListener(SWT.Selection, listener);
       resourceNameText.addListener(SWT.Modify, listener);
       resourceNameText.setText(resourceName);

	validateFields();
       resourceNameText.setFocus();

	setControl(composite);

       // set the initial selection in the tree
       if (parentFolder != null) {
           Object toSelect = null;
           if (parentFolder.getParent() == null) {
               // the root folder : select the repository
               toSelect = parentFolder.getRepository();
           }
           else
               toSelect = parentFolder;
           viewer.expandToLevel(toSelect,0);
           viewer.setSelection(new StructuredSelection(toSelect),true);
       }

}
 

public void createControl(Composite parent) {
	Composite outerContainer = new Composite(parent,SWT.NONE);
	outerContainer.setLayout(new GridLayout());
	outerContainer.setLayoutData(
	new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
	
	Composite treeGroup = new Composite(outerContainer, SWT.NONE);
	GridLayout treeLayout = new GridLayout();
	treeLayout.numColumns = 1;
	treeGroup.setLayout(treeLayout);
	treeGroup.setLayoutData(
	new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));

	treeViewer = new TreeViewer(treeGroup, SWT.BORDER | SWT.SINGLE);
	treeViewer.setLabelProvider(new RepositorySourceLabelProvider());	
	treeViewer.setContentProvider(new RepositorySourceContentProvider());
	treeViewer.setUseHashlookup(true);
	GridData layoutData = new GridData();
	layoutData.grabExcessHorizontalSpace = true;
	layoutData.grabExcessVerticalSpace = true;
	layoutData.horizontalAlignment = GridData.FILL;
	layoutData.verticalAlignment = GridData.FILL;
	layoutData.minimumHeight = 300;
	layoutData.minimumWidth = 300;
	treeViewer.getControl().setLayoutData(layoutData);
	treeViewer.setInput(this);
	
	treeViewer.setSelection(new StructuredSelection("URL"));
	
	treeViewer.addSelectionChangedListener(new ISelectionChangedListener() {
		public void selectionChanged(SelectionChangedEvent event) {
			Object selectedObject = ((IStructuredSelection)treeViewer.getSelection()).getFirstElement();
			if (selectedObject instanceof ISVNRepositorySourceProvider) {
				selectedRepositorySourceProvider = (ISVNRepositorySourceProvider)selectedObject;
			}
			else {
				selectedRepositorySourceProvider = null;
			}
			setPageComplete(!treeViewer.getSelection().isEmpty());
		}		
	});
	
	Hyperlink repositoryProviderLink = new Hyperlink(treeGroup, SWT.NONE);
	repositoryProviderLink.setUnderlined(true);
	repositoryProviderLink.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLUE));
	repositoryProviderLink.setText("Click here to see the list of available providers.");
	repositoryProviderLink.setToolTipText(REPOSITORY_PROVIDERS_WIKI_URL);
	repositoryProviderLink.addHyperlinkListener(new HyperlinkAdapter() {
		public void linkActivated(HyperlinkEvent evt) {
			showAvailableProviders();		
		}
	});
	
       Composite cloudForgeComposite = new CloudForgeComposite(outerContainer, SWT.NONE);
       GridData data = new GridData(GridData.VERTICAL_ALIGN_END | GridData.GRAB_VERTICAL | GridData.FILL_VERTICAL);
       cloudForgeComposite.setLayoutData(data);

	setControl(outerContainer);
}
 

/**
 * Creates the UI part of the page.
 *
 * @param parent  the parent of the created widgets
 */
public void createControl(Composite parent) {
	Composite composite = createComposite(parent, 1);
	// set F1 help
	PlatformUI.getWorkbench().getHelpSystem().setHelp(composite, IHelpContextIds.CREATE_REMOTE_FOLDER_PAGE);

	Listener listener = new Listener() {
		public void handleEvent(Event event) {
			validateFields();
		}
	};

       // the text field for the parent folder
	createLabel(composite, Policy.bind("NewRemoteFolderWizardMainPage.selectParentUrl")); //$NON-NLS-1$

       urlParentText = createTextField(composite);
       urlParentText.addListener(SWT.Selection, listener);
       urlParentText.addListener(SWT.Modify, listener);
       urlParentText.setEditable(false);


       // Create drill down.
       DrillDownComposite drillDown = new DrillDownComposite(composite, SWT.BORDER);
       GridData spec = new GridData(GridData.FILL_BOTH);
       spec.widthHint = LIST_WIDTH;
       spec.heightHint = LIST_HEIGHT;
       drillDown.setLayoutData(spec);

       // Create tree viewer inside drill down.
       viewer = new TreeViewer(drillDown, SWT.H_SCROLL | SWT.V_SCROLL);
       drillDown.setChildTree(viewer);
       viewer.setLabelProvider(new WorkbenchLabelProvider());
       RemoteContentProvider remoteContentProvider = new RemoteContentProvider();
       remoteContentProvider.setUseDeferredContentManager(false);
       viewer.setContentProvider(remoteContentProvider);
       viewer.setInput(new AllRootsElement());
       viewer.addFilter(RepositoryFilters.FOLDERS_ONLY);
       viewer.addSelectionChangedListener(treeSelectionChangedListener);

       // the text field for the folder name
       createLabel(composite, Policy.bind("NewRemoteFolderWizardMainPage.folderName")); //$NON-NLS-1$

       folderNameText = createTextField(composite);
       folderNameText.addListener(SWT.Selection, listener);
       folderNameText.addListener(SWT.Modify, listener);

	validateFields();
       folderNameText.setFocus();

	setControl(composite);

       // set the initial selection in the tree
       if (parentFolder != null) {      	
       	List itemsToExpand = new ArrayList();
       	ISVNRemoteFolder remoteParent = parentFolder.getParent();
       	while (remoteParent != null) {
   			if (remoteParent.getParent() == null) itemsToExpand.add(0, remoteParent.getRepository());
   			else itemsToExpand.add(0, remoteParent);
   			remoteParent = remoteParent.getParent();        		
       	}

       	viewer.setExpandedElements(itemsToExpand.toArray());
       	if (parentFolder.getParent() == null) viewer.setSelection(new StructuredSelection(parentFolder.getRepository()), true);
       	else viewer.setSelection(new StructuredSelection(parentFolder), true);
       }

}
 

protected Control createDialogArea(Composite parent){
	Composite composite = (Composite) super.createDialogArea(parent);
	
	
	GridLayout layout = new GridLayout();
	layout.numColumns = 1;	
	layout.marginHeight= convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
	layout.marginWidth= convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);	
	composite.setLayout(layout);
	final GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
	composite.setLayoutData(data);
       
	getShell().setText(windowTitle); 

       treeViewer = new TreeViewer(composite, SWT.BORDER);
       final GridData gd= new GridData(SWT.FILL, SWT.FILL, true, true);
       gd.widthHint= 550;
       gd.heightHint= 250;
       treeViewer.getTree().setLayoutData(gd);
      
       treeViewer.setContentProvider(new LocationPageContentProvider());
       treeViewer.setLabelProvider(new WorkbenchLabelProvider());
       treeViewer.setInput(ResourcesPlugin.getWorkspace());
       
       //Open to whatever is selected in the workspace field
       IPath existingWorkspacePath = new Path(pathText.getText());
       if (existingWorkspacePath != null){
       	//Ensure that this workspace path is valid
       	IResource selectedResource = ResourcesPlugin.getWorkspace().getRoot().findMember(existingWorkspacePath);
       	if (selectedResource != null) {
       		treeViewer.expandToLevel(selectedResource, 0);
       		treeViewer.setSelection(new StructuredSelection(selectedResource));
   		}
       }
       
       final Composite group = new Composite(composite, SWT.NONE);
       layout = new GridLayout(2, false);
       layout.marginWidth = 0;
       group.setLayout(layout);
       group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
       
       final Label label = new Label(group, SWT.NONE);
       label.setLayoutData(new GridData());
       label.setText(Policy.bind("WorkspaceDialog.fileName")); //$NON-NLS-1$
       
       fileNameText = new Text(group,SWT.BORDER);
       fileNameText.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
	
       setupListeners();
	
	return parent;
}
 

@Override
public Composite createOpeartorEditor(Composite parent,final Operator operator,final Expression sourceExpression) {
    Composite composite = new Composite(parent, SWT.NONE);
    composite.setLayoutData(GridDataFactory.fillDefaults().grab(true,true).create()) ;
    composite.setLayout(GridLayoutFactory.fillDefaults().numColumns(1).margins(0, 0).spacing(0, 5).create());

    final XMLData data = (XMLData) sourceExpression.getReferencedElements().get(0) ;
    String namespace = data.getNamespace() ;
    String element = data.getType();
    XSDRepositoryStore xsdStore = (XSDRepositoryStore) RepositoryManager.getInstance().getRepositoryStore(XSDRepositoryStore.class) ;

    XSDElementDeclaration root = xsdStore.findElementDeclaration(namespace, element);
    final XSDContentProvider provider =   new XSDContentProvider(true) ;
    provider.setElement(root);

    xsdViewer = new TreeViewer(composite);
    xsdViewer.setContentProvider(provider);
    XSDLabelProvider labelProvider = new XSDLabelProvider();
    xsdViewer.setLabelProvider(new DecoratingLabelProvider(labelProvider, labelProvider));
    xsdViewer.getControl().setLayoutData(GridDataFactory.fillDefaults().grab(true, true).hint(SWT.DEFAULT, 200).create());
    xsdViewer.setInput(new Object());

    String content = operator.getExpression() ;
    if(content == null){
        content = "" ;
    }
    xsdViewer.setSelection(new StructuredSelection(createTreePath(content, provider)));

    xpathText = new Text(composite, SWT.WRAP | SWT.BORDER);
    xpathText.setLayoutData(GridDataFactory.fillDefaults().hint(SWT.DEFAULT, 40).grab(true, false).create());
    xpathText.addModifyListener(new ModifyListener() {
        @Override
        public void modifyText(ModifyEvent e) {
            operator.setExpression(xpathText.getText()) ;
        }
    });


    xsdViewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            ITreeSelection selection = (ITreeSelection) xsdViewer.getSelection();
            String xpath = computeXPath(selection, false);
            if(xpath == null || xpath.isEmpty()){
                xpathText.setText(data.getName());
            }else{
                xpathText.setText(xpath);
            }

            xpathText.redraw();
            fireSelectionChange(event) ;
        }
    });
    return composite ;
}