org.eclipse.jface.viewers.CheckboxTreeViewer#addFilter ( )源码实例Demo

/**
 * Creates the tree viewer.
 *
 * @param parent the parent composite
 * @return the tree viewer
 */
protected CheckboxTreeViewer createTreeViewer(Composite parent) {
	fViewer = new CheckboxTreeViewer(parent, SWT.BORDER);

	fViewer.setContentProvider(fContentProvider);
	fViewer.setLabelProvider(fLabelProvider);
	fViewer.addCheckStateListener(new ICheckStateListener() {
		public void checkStateChanged(CheckStateChangedEvent event) {
			updateOKStatus();
		}
	});

	fViewer.setComparator(new ResourceComparator(ResourceComparator.NAME));
	if (fFilters != null) {
		for (int i = 0; i != fFilters.size(); i++)
			fViewer.addFilter(fFilters.get(i));
	}

	fViewer.setInput(fInput);

	return fViewer;
}
 

@Override
protected CheckboxTreeViewer createTreeViewer(Composite parent) {
	CheckboxTreeViewer treeViewer= super.createTreeViewer(parent);
	if (!fAllowSettersForFinals) {
		treeViewer.addFilter(fSettersForFinalFieldsFilter);
	}
	return treeViewer;
}
 

private void createProcessTree(Composite container) {
	Composite composite = new Composite(container, SWT.NONE);
	composite.setLayout(new FillLayout());
	UI.gridData(composite, true, true);
	viewer = new CheckboxTreeViewer(composite, SWT.MULTI | SWT.BORDER);
	viewer.setUseHashlookup(true);
	viewer.setContentProvider(new NavigationContentProvider());
	viewer.setLabelProvider(new NavigationLabelProvider(false));
	viewer.setInput(Navigator.getNavigationRoot());
	viewer.addCheckStateListener(new NavigationTreeCheck(viewer));
	viewer.addCheckStateListener(this);
	viewer.addFilter(new NavigationTreeFilter());
	viewer.setComparator(new NavigationComparator());
}
 

private void createViewer(Composite composite) {
	viewer = new CheckboxTreeViewer(composite, SWT.VIRTUAL | SWT.MULTI
			| SWT.BORDER);
	viewer.setUseHashlookup(true);
	viewer.getTree().setLayoutData(
			new GridData(SWT.FILL, SWT.FILL, true, true));
	viewer.setContentProvider(new NavigationContentProvider());
	viewer.setLabelProvider(new NavigationLabelProvider(false));
	viewer.setComparator(new NavigationComparator());
	viewer.addFilter(new ModelTypeFilter(types));
	viewer.addCheckStateListener(new ModelSelectionState(this, viewer));
	registerInputHandler(composite);
	ColumnViewerToolTipSupport.enableFor(viewer);
}
 

public void drawOn(Composite comp, FormToolkit tk) {
	tree = new CheckboxTreeViewer(comp,
			SWT.VIRTUAL | SWT.MULTI | SWT.BORDER);
	tree.setUseHashlookup(true);
	tree.setContentProvider(new NavigationContentProvider());
	tree.setLabelProvider(new NavigationLabelProvider(false));
	tree.setComparator(new NavigationComparator());
	tree.addFilter(new ModelTypeFilter(types));
	tree.addCheckStateListener(this);
	ColumnViewerToolTipSupport.enableFor(tree);
	if (tk != null) {
		tk.adapt(tree.getTree());
	}

	// compute a height hint
	GridData data = UI.gridData(tree.getTree(), true, true);
	data.minimumHeight = 120;
	Point p = comp.computeSize(SWT.DEFAULT, SWT.DEFAULT);
	data.heightHint = p.y < 120 ? 120 : p.y;

	if (types == null || types.length == 0)
		return;
	if (types.length == 1) {
		tree.setInput(Navigator.findElement(types[0]));
	} else {
		List<INavigationElement<?>> elems = Arrays.stream(types)
				.map(type -> Navigator.findElement(type))
				.filter(elem -> !elem.getChildren().isEmpty())
				.collect(Collectors.toList());
		tree.setInput(elems);
	}
	tree.expandToLevel(2);
}
 

private void createProcessDataMappingTreeViewer(Composite composite, EMFDataBindingContext dbc) {
    final Composite viewerComposite = new Composite(composite, SWT.NONE);
    viewerComposite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create());
    viewerComposite.setLayout(GridLayoutFactory.fillDefaults().numColumns(2).margins(15, 15).create());
    createButtonComposite(viewerComposite);
    treeViewer = new CheckboxTreeViewer(viewerComposite,
            SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL | SWT.MULTI);
    treeViewer.getTree()
            .setLayoutData(GridDataFactory.fillDefaults().grab(true, true).hint(SWT.DEFAULT, 200).create());
    treeViewer.getTree().setHeaderVisible(true);
    treeViewer.addFilter(hidePersistenceIdMapping());
    final FieldToContractInputMappingViewerCheckStateManager manager = new FieldToContractInputMappingViewerCheckStateManager();
    treeViewer.addCheckStateListener(manager);
    treeViewer.setCheckStateProvider(manager);
    final ObservableListTreeContentProvider provider = new ObservableListTreeContentProvider(
            new FieldToContractInputMappingObservableFactory(),
            new FieldToContractInputMappingTreeStructureAdvisor());
    treeViewer.setContentProvider(provider);

    final TreeViewerColumn nameTreeViewerColumn = new TreeViewerColumn(treeViewer, SWT.FILL);
    nameTreeViewerColumn.getColumn().setText(Messages.attributeName);
    nameTreeViewerColumn.getColumn().setWidth(250);
    lazyFieldStatusProvider = new UnselectLazyReferencesInMultipleContainer();
    nameTreeViewerColumn.setLabelProvider(new FieldNameColumnLabelProvider(lazyFieldStatusProvider));

    final TreeViewerColumn typeTreeViewerColumn = new TreeViewerColumn(treeViewer, SWT.FILL);
    typeTreeViewerColumn.getColumn().setText(Messages.attributetype);
    typeTreeViewerColumn.getColumn().setWidth(150);
    typeTreeViewerColumn.setLabelProvider(new FieldTypeColumnLabelProvider());

    final TreeViewerColumn inputTypeTreeViewerColumn = new TreeViewerColumn(treeViewer, SWT.FILL);
    inputTypeTreeViewerColumn.getColumn().setText(Messages.inputType);
    inputTypeTreeViewerColumn.getColumn().setWidth(150);
    inputTypeTreeViewerColumn.setLabelProvider(new InputTypeColumnLabelProvider(contract));
    inputTypeTreeViewerColumn.setEditingSupport(new ContractInputTypeEditingSupport(treeViewer, contract));

    final TreeViewerColumn mandatoryTreeViewerColumn = new TreeViewerColumn(treeViewer, SWT.FILL);
    mandatoryTreeViewerColumn.getColumn().setText(Messages.mandatory);
    mandatoryTreeViewerColumn.getColumn().setWidth(80);
    mandatoryTreeViewerColumn.setLabelProvider(new MandatoryColumnLabelProvider());

    IViewerObservableSet checkedElements = ViewersObservables.observeCheckedElements(treeViewer,
            FieldToContractInputMapping.class);

    final IObservableValue<FieldToContractInputMapping> observeInput = ViewersObservables.observeInput(treeViewer);
    dbc.bindValue(observeInput,
            selectedDataObservable,
            null,
            UpdateStrategyFactory.updateValueStrategy().withConverter(selectedDataToFieldMappings()).create());

    generationOptions.getEditModeObservable().addValueChangeListener(event -> {
        if (selectedDataObservable.getValue() instanceof BusinessObjectData) {
            createMapping(selectedDataObservable.getValue());
            treeViewer.setInput(mappings);
        }
    });

    createButtonListeners(checkedElements);

    multiValidator = new EmptySelectionMultivalidator(selectedDataObservable, checkedElements, mappings,
            contract.eContainer(), generationOptions.getEditModeObservable());
    dbc.addValidationStatusProvider(multiValidator);

    new Label(viewerComposite, SWT.NONE); //FILLER

    Link formGenerationDocLink = new Link(viewerComposite, SWT.NONE);
    formGenerationDocLink.setLayoutData(GridDataFactory.fillDefaults().grab(true, false).create());
    formGenerationDocLink.setText(Messages.moreInfoFormGenerationLink);
    formGenerationDocLink.addListener(SWT.Selection, event -> openBrowser(FORM_GENERATION_REDIRECT_ID));

    ColumnViewerToolTipSupport.enableFor(treeViewer);
}