Example usage for org.eclipse.jface.databinding.viewers ObservableValueEditingSupport ObservableValueEditingSupport

Introduction

In this page you can find the example usage for org.eclipse.jface.databinding.viewers ObservableValueEditingSupport ObservableValueEditingSupport.

Prototype

public ObservableValueEditingSupport(ColumnViewer viewer, DataBindingContext dbc) 

Source Link

Document

Constructs a new instance with the provided viewer and dbc.

Usage

From source file:org.eclipse.emf.examples.library.databinding.writer.WriterForm.java

License:Open Source License

@Override
public void doCreateForm(TabFolder folder, TabItem item, final EditingDomain domain, DataBindingContext dbc,
        IObservableValue master) {// ww w.  ja  v  a  2  s .c o m

    IValueProperty textProp = WidgetProperties.text();
    dbc.bindValue(textProp.observe(item),
            EMFEditObservables.observeDetailValue(Realm.getDefault(), domain, master,
                    EXTLibraryPackage.Literals.LIBRARY__WRITERS),
            new UpdateValueStrategy(), new UpdateValueStrategy().setConverter(new LengthConverter()));

    Composite comp = new Composite(folder, SWT.NONE);
    TableColumnLayout layout = new TableColumnLayout();
    comp.setLayout(layout);

    writerViewer = new TableViewer(comp, SWT.FULL_SELECTION | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
    writerViewer.getTable().setHeaderVisible(true);
    writerViewer.getTable().setLinesVisible(true);

    Color color = comp.getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION);
    final Color bg = new Color(comp.getDisplay(),
            new RGB(color.getRed() - 50, color.getGreen() - 50, color.getBlue() - 50));

    writerViewer.getControl().addDisposeListener(new DisposeListener() {

        public void widgetDisposed(DisposeEvent e) {
            bg.dispose();
        }
    });

    TableViewerFocusCellManager focusCellManager = new TableViewerFocusCellManager(writerViewer,
            new FocusCellOwnerDrawHighlighter(writerViewer) {
                @Override
                protected Color getSelectedCellBackgroundColor(ViewerCell cell) {
                    return bg;
                }
            });
    ColumnViewerEditorActivationStrategy actSupport = new ColumnViewerEditorActivationStrategy(writerViewer) {
        protected boolean isEditorActivationEvent(ColumnViewerEditorActivationEvent event) {
            boolean rv = false;

            if (event.eventType == ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION) {
                rv = (((MouseEvent) event.sourceEvent).stateMask & SWT.MOD1) == SWT.MOD1;
            }

            return rv || event.eventType == ColumnViewerEditorActivationEvent.TRAVERSAL
                    || (event.eventType == ColumnViewerEditorActivationEvent.KEY_PRESSED
                            && event.keyCode == SWT.CR)
                    || event.eventType == ColumnViewerEditorActivationEvent.PROGRAMMATIC;
        }
    };

    TableViewerEditor.create(writerViewer, focusCellManager, actSupport, ColumnViewerEditor.TABBING_HORIZONTAL
            //| ColumnViewerEditor.TABBING_MOVE_TO_ROW_NEIGHBOR
            | ColumnViewerEditor.TABBING_VERTICAL | ColumnViewerEditor.KEYBOARD_ACTIVATION);

    IFocusService focusService = (IFocusService) getSite().getService(IFocusService.class);
    focusService.addFocusTracker(writerViewer.getControl(), WRITER_TABLE);

    ObservableListContentProvider cp = new ObservableListContentProvider();
    writerViewer.setContentProvider(cp);

    ConditionalTemplate[] tpl = new ConditionalTemplate[3];
    tpl[0] = new ConditionalTemplate("${0}") {

        @Override
        public boolean isTemplate(EObject element) {
            return element instanceof Writer && ((Writer) element).getFirstName() != null;
        }

    };
    tpl[1] = new ConditionalTemplate("${0}") {

        @Override
        public boolean isTemplate(EObject element) {
            return element instanceof Writer && ((Writer) element).getLastName() != null;
        }

    };
    tpl[2] = new ConditionalTemplate("-") {

        @Override
        public boolean isTemplate(EObject element) {
            return true;
        }

    };

    EStructuralFeature[] features = new EStructuralFeature[2];
    features[0] = EXTLibraryPackage.Literals.PERSON__FIRST_NAME;
    features[1] = EXTLibraryPackage.Literals.PERSON__LAST_NAME;

    IObservableMap[] map = EMFEditObservables.observeMaps(domain, cp.getKnownElements(), features);

    TableViewerColumn c = new TableViewerColumn(writerViewer, SWT.NONE);
    c.getColumn().setText("Firstname");
    layout.setColumnData(c.getColumn(), new ColumnWeightData(1, 120));
    c.setLabelProvider(
            new ObservableColumnLabelProvider(new IObservableMap[] { map[0] }, Arrays.asList(tpl[0], tpl[2])));

    final TextCellEditor editor = new TextCellEditor(writerViewer.getTable());

    ObservableValueEditingSupport o = new ObservableValueEditingSupport(writerViewer, dbc) {

        @Override
        protected CellEditor getCellEditor(Object element) {
            return editor;
        }

        @Override
        protected IObservableValue doCreateElementObservable(Object element, ViewerCell cell) {
            return EMFEditObservables.observeValue(domain, (EObject) element,
                    EXTLibraryPackage.Literals.PERSON__FIRST_NAME);
        }

        @Override
        protected IObservableValue doCreateCellEditorObservable(CellEditor cellEditor) {
            return SWTObservables.observeText(cellEditor.getControl());
        }
    };
    c.setEditingSupport(o);

    c = new TableViewerColumn(writerViewer, SWT.NONE);
    c.getColumn().setText("Lastname");
    layout.setColumnData(c.getColumn(), new ColumnWeightData(1, 120));
    c.setLabelProvider(
            new ObservableColumnLabelProvider(new IObservableMap[] { map[1] }, Arrays.asList(tpl[1], tpl[2])));
    o = new ObservableValueEditingSupport(writerViewer, dbc) {

        @Override
        protected CellEditor getCellEditor(Object element) {
            return editor;
        }

        @Override
        protected IObservableValue doCreateElementObservable(Object element, ViewerCell cell) {
            return EMFEditObservables.observeValue(domain, (EObject) element,
                    EXTLibraryPackage.Literals.PERSON__LAST_NAME);
        }

        @Override
        protected IObservableValue doCreateCellEditorObservable(CellEditor cellEditor) {
            return SWTObservables.observeText(cellEditor.getControl());
        }
    };
    c.setEditingSupport(o);

    MenuManager mgr = new MenuManager();
    writerViewer.getControl().setMenu(mgr.createContextMenu(writerViewer.getControl()));
    getSite().registerContextMenu("org.eclipse.emf.examples.library.databinding.writer", mgr, writerViewer);

    writerViewer.setInput(EMFEditObservables.observeDetailList(Realm.getDefault(), domain, master,
            EXTLibraryPackage.Literals.LIBRARY__WRITERS));
    item.setControl(comp);

}

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