Java IViewerObservableValue类代码示例

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
private void setupProjectSelectorDataBinding() {
  IViewerObservableValue projectInput =
      ViewerProperties.input().observe(projectSelector.getViewer());
  IViewerObservableValue projectSelection =
      ViewerProperties.singleSelection().observe(projectSelector.getViewer());
  bindingContext.addValidationStatusProvider(
      new ProjectSelectionValidator(projectInput, projectSelection, requireValues));

  IViewerObservableValue projectList =
      ViewerProperties.singleSelection().observe(projectSelector.getViewer());
  IObservableValue projectIdModel = PojoProperties.value("projectId").observe(model);

  UpdateValueStrategy gcpProjectToProjectId =
      new UpdateValueStrategy().setConverter(new GcpProjectToProjectIdConverter());
  UpdateValueStrategy projectIdToGcpProject =
      new UpdateValueStrategy().setConverter(new ProjectIdToGcpProjectConverter());

  bindingContext.bindValue(projectList, projectIdModel,
      gcpProjectToProjectId, projectIdToGcpProject);
}
 

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
private ProjectSelectionValidator(IViewerObservableValue projectInput,
                                  IViewerObservableValue projectSelection,
                                  boolean requireValues) {
  this.projectInput = projectInput;
  this.projectSelection = projectSelection;
  this.requireValues = requireValues;
}
 

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
private void bind(IViewerValueProperty prop, String expr) {
	Object dataContext = findTagged(DATA_CONTEXT, null);
	Binder dbc = findTagged(Binder.class);
	IViewerObservableValue observeValue = prop.observe(viewer);
	org.eclipse.core.databinding.Binding binding = dbc.bind(observeValue, dataContext, expr);

	if (binding == null) {
		// no observables have been parsed, just use the value
		prop.setValue(viewer, expr);
	}
}
 

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
private void createIntervalCombo() {
  final ComboViewer intervalComboViewer = new ComboViewer(this, SWT.NONE);
  intervalComboViewer.setContentProvider(ArrayContentProvider.getInstance());
  intervalComboViewer.setInput(TimeRange.values());
  final IViewerObservableValue intervalComboViewerObservable = ViewersObservables.observeSingleSelection(intervalComboViewer);
  DataBindings.createBinding(intervalComboViewerObservable, viewModel.getVisibleRange(), VisibleRangeViewModel.PROPERTY__RANGE);
}
 

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
/**
 * 对下拉列表和转换器列表进行绑定
 * @param context
 * @param comboViewer
 * @param model
 *            ;
 */
public static void bindValue(DataBindingContext context, ComboViewer comboViewer, ConverterViewModel model) {
	// ViewerSupport.bind(comboViewer, BeansObservables.observeList(
	// model, "supportTypes", String.class),
	// Properties.selfValue(String.class));
	//		
	//
	// context.bindValue(ViewersObservables
	// .observeSingleSelection(comboViewer), BeansObservables
	// .observeValue(model,
	// "selectedType"));

	// ObservableListContentProvider viewerContentProvider=new ObservableListContentProvider();
	comboViewer.setContentProvider(new ArrayContentProvider());
	comboViewer.setComparator(new ViewerComparator());
	// IObservableMap[] attributeMaps = BeansObservables.observeMaps(
	// viewerContentProvider.getKnownElements(),
	// ConverterBean.class, new String[] { "description" });
	// comboViewer.setLabelProvider(new ObservableMapLabelProvider(
	// attributeMaps));
	// comboViewer.setInput(Observables.staticObservableList(model.getSupportTypes(),ConverterBean.class));

	comboViewer.setInput(model.getSupportTypes());
	IViewerObservableValue selection = ViewersObservables.observeSingleSelection(comboViewer);
	IObservableValue observableValue = BeansObservables.observeDetailValue(selection, PROPERTIES_NAME, null);
	context.bindValue(observableValue, BeansObservables.observeValue(model, PROPERTIES_SELECTED_TYPE));
}
 

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
public static void bindValue(DataBindingContext context,ComboViewer comboViewer,
			ConverterViewModel model) {
//		ViewerSupport.bind(comboViewer, BeansObservables.observeList(
//				model, "supportTypes", String.class),
//				Properties.selfValue(String.class));
//		
//
//		context.bindValue(ViewersObservables
//				.observeSingleSelection(comboViewer), BeansObservables
//				.observeValue(model,
//						"selectedType"));
		
//		ObservableListContentProvider viewerContentProvider=new ObservableListContentProvider();
		comboViewer.setContentProvider(new ArrayContentProvider());
		comboViewer.setComparator(new ViewerComparator());
//		IObservableMap[] attributeMaps = BeansObservables.observeMaps(
//				viewerContentProvider.getKnownElements(),
//				ConverterBean.class, new String[] { "description" });
//		comboViewer.setLabelProvider(new ObservableMapLabelProvider(
//		attributeMaps));
//		comboViewer.setInput(Observables.staticObservableList(model.getSupportTypes(),ConverterBean.class));
		
		comboViewer.setInput(model.getSupportTypes());
		IViewerObservableValue selection=ViewersObservables.observeSingleSelection(comboViewer);
		IObservableValue observableValue=BeansObservables.observeDetailValue(selection, "name", ConverterBean.class);
		context.bindValue(observableValue, BeansObservables
				.observeValue(model,
						"selectedType"));
	}
 

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
/**
 * creates a binding for a combo
 *
 * @param combo
 *            widget that displays the information to the user
 * @param entity
 *            class that holds the model information
 * @param entityClass
 *            class of entity
 * @param propertyName
 *            name of the property that should be binded
 * @param propertyClass
 *            class of the property that should be binded
 * @param values
 *            all values of the property
 * @param bindingContext
 *            context of the binding
 * @param labelProvider
 *            the label provider that will be used to display the state in
 *            the combo. can be <code>null</code>
 * @param isRequired
 *            should the field be filled by the user?
 * @return binding
 */
public static <E, T> Binding bindObjectToCCombo(final CCombo combo, final IObservableValue inputObservable,
		final Class<E> entityClass, final String propertyName, final Class<T> propertyClass,
		final Collection<T> values, final IBaseLabelProvider labelProvider, final DataBindingContext bindingContext,
		final boolean isRequired) {
	final ComboViewer comboViewer = new ComboViewer(combo);
	comboViewer.setContentProvider(ArrayContentProvider.getInstance());
	comboViewer.setLabelProvider(labelProvider);
	comboViewer.setInput(values);

	final IViewerObservableValue targetObservable = ViewersObservables.observeSingleSelection(comboViewer);
	final IObservableValue modelObservable = BeansObservables.observeDetailValue(inputObservable, propertyName,
			entityClass);

	final UpdateValueStrategy targetToModel = isRequired
			? new UpdateValueStrategy().setAfterConvertValidator(new NotEmptyValue()) : null;

	final Binding binding = bindingContext.bindValue(targetObservable, modelObservable, targetToModel, null);

	// TODO add required binding

	return binding;

}
 

import org.eclipse.jface.databinding.viewers.IViewerObservableValue; //导入依赖的package包/类
@SuppressWarnings("unchecked")
public void initDataBindings(){
	DataBindingContext bindingContext = new DataBindingContext();
	
	UpdateValueStrategy strategyUpdateProductChilds = new UpdateValueStrategy() {
		@Override
		protected IStatus doSet(IObservableValue observableValue, Object value){
			IStatus status = super.doSet(observableValue, value);
			Eigenartikel.copyProductAttributesToArticleSetAsChild(getProductArtikel(), null);
			ElexisEventDispatcher.update(getProductArtikel());
			return status;
		}
	};
	
	//
	ISWTObservableValue observeTextTxtProductNameObserveWidget =
		WidgetProperties.text(SWT.Modify).observeDelayed(300, txtProductName);
	IObservableValue<String> productEigenartikelNameObserveDetailValue = PojoProperties
		.value(Eigenartikel.class, "name", String.class).observeDetail(productEigenartikel);
	bindingContext.bindValue(observeTextTxtProductNameObserveWidget,
		productEigenartikelNameObserveDetailValue, strategyUpdateProductChilds, null);
	observeTextTxtProductNameObserveWidget.addValueChangeListener(new IValueChangeListener() {
		@Override
		public void handleValueChange(ValueChangeEvent event){
			if (productEigenartikel.getValue() != null) {
				if (event.diff.getOldValue() != null
					&& !event.diff.getOldValue().toString().isEmpty()) {
					ElexisEventDispatcher
						.update((PersistentObject) productEigenartikel.getValue());
				}
			}
		}
	});
	
	//
	IViewerObservableValue observeSingleSelectionComboViewerProductType =
		ViewerProperties.singleSelection().observe(comboViewerProductType);
	IObservableValue<Eigenartikel> productEigenartikelTypObserveDetailValue =
		PojoProperties.value(Eigenartikel.class, "typ", EigenartikelTyp.class)
			.observeDetail(productEigenartikel);
	bindingContext.bindValue(observeSingleSelectionComboViewerProductType,
		productEigenartikelTypObserveDetailValue, null, null);
	
	//
	ISWTObservableValue observeTextTxtAtcCodeObserveWidget =
		WidgetProperties.text(SWT.Modify).observeDelayed(300, txtAtcCode);
	IObservableValue<String> productEigenartikelATC_codeObserveDetailValue = PojoProperties
		.value(Eigenartikel.class, "ATC_code", String.class).observeDetail(productEigenartikel);
	bindingContext.bindValue(observeTextTxtAtcCodeObserveWidget,
		productEigenartikelATC_codeObserveDetailValue, strategyUpdateProductChilds, null);
}