org.eclipse.osbp.runtime.web.ecview.presentation.vaadin/src/org/eclipse/osbp/runtime/web/ecview/presentation/vaadin/internal/EnumOptionsGroupPresentation.java - osbp/org.eclipse.osbp.runtime.web - Git at Google

 /**
  * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *         Florian Pirchner - Initial implementation
  */
 package org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal;

 import java.util.HashSet;
 import java.util.Locale;
 import java.util.Set;

 import org.eclipse.core.databinding.observable.IObservable;
 import org.eclipse.core.databinding.observable.list.IObservableList;
 import org.eclipse.core.databinding.observable.value.IObservableValue;
 import org.eclipse.osbp.ecview.core.common.editpart.IElementEditpart;
 import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableBindingEndpoint;
 import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableCollectionEndpoint;
 import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableSelectionEndpoint;
 import org.eclipse.osbp.ecview.core.databinding.emf.model.ECViewModelBindable;
 import org.eclipse.osbp.ecview.core.extension.model.extension.ExtensionModelPackage;
 import org.eclipse.osbp.ecview.core.extension.model.extension.YEnumOptionsGroup;
 import org.eclipse.osbp.ecview.core.extension.model.extension.YSelectionType;
 import org.eclipse.osbp.ecview.core.ui.core.editparts.extension.IEnumOptionsGroupEditpart;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractFieldWidgetPresenter;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumConverter;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumOptionBean;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumOptionBeanHelper;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumSetConverter;
 import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.util.Util;
 import org.eclipse.osbp.runtime.web.vaadin.common.resource.IResourceProvider;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 import com.vaadin.data.Property;
 import com.vaadin.data.util.BeanItemContainer;
 import com.vaadin.data.util.ObjectProperty;
 import com.vaadin.data.util.converter.Converter;
 import com.vaadin.server.ErrorMessage;
 import com.vaadin.server.Resource;
 import com.vaadin.server.ThemeResource;
 import com.vaadin.ui.AbstractSelect.ItemCaptionMode;
 import com.vaadin.ui.Component;
 import com.vaadin.ui.ComponentContainer;
 import com.vaadin.ui.Field;
 import com.vaadin.ui.OptionGroup;

 // TODO: Auto-generated Javadoc
 /**
  * This presenter is responsible to render a list box on the given layout.
  */
 @SuppressWarnings("restriction")
 public class EnumOptionsGroupPresentation extends
 		AbstractFieldWidgetPresenter<Component> {

 	/** The Constant LOGGER. */
 	private static final Logger LOGGER = LoggerFactory
 			.getLogger(EnumOptionsGroupPresentation.class);

 	/** The model access. */
 	private final ModelAccess modelAccess;

 	/** The options group. */
 	private OptionGroup optionsGroup;

 	/** The property. */
 	@SuppressWarnings("rawtypes")
 	private ObjectProperty property;

 	/**
 	 * Constructor.
 	 *
 	 * @param editpart
 	 *            The editpart of that presenter
 	 */
 	public EnumOptionsGroupPresentation(IElementEditpart editpart) {
 		super((IEnumOptionsGroupEditpart) editpart);
 		this.modelAccess = new ModelAccess(
 				(YEnumOptionsGroup) editpart.getModel());
 	}

 	/**
 	 * {@inheritDoc}
 	 */
 	@SuppressWarnings({ "unchecked", "rawtypes" })
 	@Override
 	public Component doCreateWidget(Object parent) {
 		if (optionsGroup == null) {

 			optionsGroup = new CustomOptionsGroup();
 			optionsGroup.addStyleName(CSS_CLASS_CONTROL);
 			optionsGroup.setImmediate(true);
 			optionsGroup
 					.setMultiSelect(modelAccess.yField.getSelectionType() == YSelectionType.MULTI);

 			setupComponent(optionsGroup, getCastedModel());

 			associateWidget(optionsGroup, modelAccess.yField);
 			if (modelAccess.isCssIdValid()) {
 				optionsGroup.setId(modelAccess.getCssID());
 			} else {
 				optionsGroup.setId(getEditpart().getId());
 			}

 			try {
 				if (optionsGroup.isMultiSelect()) {
 					property = new ObjectProperty(new HashSet(), Set.class);
 				} else {
 					if (modelAccess.yField.getType() != null) {
 						property = new ObjectProperty(null,
 								modelAccess.yField.getType());
 					} else {
 						property = new ObjectProperty(null, Object.class);
 					}
 				}
 				optionsGroup.setPropertyDataSource(property);

 				if (modelAccess.yField.getType() != null) {
 					BeanItemContainer<EnumOptionBean> datasource = createDatasource((Class<? extends Enum<?>>) modelAccess.yField
 							.getType());
 					optionsGroup.setContainerDataSource(datasource);
 				}

 				optionsGroup.setConverter(getConverter());

 				optionsGroup.setItemCaptionPropertyId("description");
 				optionsGroup.setItemCaptionMode(ItemCaptionMode.PROPERTY);
 				optionsGroup.setItemIconPropertyId("imagePath");

 				// creates the binding for the field
 				createBindings(modelAccess.yField, optionsGroup);

 				if (modelAccess.isCssClassValid()) {
 					optionsGroup.addStyleName(modelAccess.getCssClass());
 				}

 				applyCaptions();

 				initializeField(optionsGroup);
 			} catch (Exception e) {
 				LOGGER.error("{}", e);
 			}
 		}
 		return optionsGroup;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractFieldWidgetPresenter#getDefaultConverter()
 	 */
 	@SuppressWarnings({ "unchecked", "rawtypes" })
 	@Override
 	protected Converter getDefaultConverter() {
 		if(optionsGroup == null) {
 			return null;
 		}

 		if (modelAccess.yField.getSelectionType() == YSelectionType.MULTI) {
 			return new EnumSetConverter(
 					(Class<Enum<?>>) modelAccess.yField.getType(), optionsGroup);
 		} else {
 			return new EnumConverter(
 					(Class<Enum<?>>) modelAccess.yField.getType(), optionsGroup);
 		}
 	}

 	/**
 	 * Creates the datasource used for the enum field.
 	 *
 	 * @param enumClass
 	 *            the enum class
 	 * @return the bean item container
 	 */
 	protected BeanItemContainer<EnumOptionBean> createDatasource(
 			Class<? extends Enum<?>> enumClass) {
 		BeanItemContainer<EnumOptionBean> datasource = new BeanItemContainer<EnumOptionBean>(
 				EnumOptionBean.class);
 		datasource.addAll(EnumOptionBeanHelper.getBeans(enumClass,
 				getI18nService(), getLocale()));
 		return datasource;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doUpdateLocale(java.util.Locale)
 	 */
 	@Override
 	protected void doUpdateLocale(Locale locale) {
 		// no need to set the locale to the ui elements. Is handled by vaadin
 		// internally.

 		// update the captions
 		applyCaptions();
 	}

 	/**
 	 * Applies the labels to the widgets.
 	 */
 	@SuppressWarnings("unchecked")
 	protected void applyCaptions() {
 		Util.applyCaptions(getI18nService(), modelAccess.getLabel(),
 				modelAccess.getLabelI18nKey(), getLocale(), optionsGroup);

 		EnumOptionBeanHelper.updateLocale((BeanItemContainer<EnumOptionBean>) optionsGroup.getContainerDataSource(),
 				getI18nService(), getLocale());
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractFieldWidgetPresenter#doGetField()
 	 */
 	@Override
 	protected Field<?> doGetField() {
 		return optionsGroup;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#internalGetObservableEndpoint(org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableBindingEndpoint)
 	 */
 	@Override
 	protected IObservable internalGetObservableEndpoint(
 			YEmbeddableBindingEndpoint bindableValue) {
 		if (bindableValue == null) {
 			throw new IllegalArgumentException(
 					"BindableValue must not be null!");
 		}

 		if (bindableValue instanceof YEmbeddableCollectionEndpoint) {
 			return internalGetCollectionEndpoint();
 		} else if (bindableValue instanceof YEmbeddableSelectionEndpoint) {
 			return internalGetSelectionEndpoint((YEmbeddableSelectionEndpoint) bindableValue);
 		}
 		throw new IllegalArgumentException("Not a valid input: "
 				+ bindableValue);
 	}

 	/**
 	 * Returns the observable to observe the collection.
 	 *
 	 * @return the i observable list
 	 */
 	protected IObservableList internalGetCollectionEndpoint() {
 		throw new UnsupportedOperationException();
 	}

 	/**
 	 * Returns the observable to observe the selection.
 	 *
 	 * @param yEndpoint
 	 *            the y endpoint
 	 * @return the i observable value
 	 */
 	protected IObservableValue internalGetSelectionEndpoint(
 			YEmbeddableSelectionEndpoint yEndpoint) {

 		String attributePath = ECViewModelBindable.getAttributePath(
 				ExtensionModelPackage.Literals.YENUM_OPTIONS_GROUP__SELECTION,
 				yEndpoint.getAttributePath());

 		// return the observable value for text
 		return ECViewModelBindable.observeValue(castEObject(getModel()),
 				attributePath, modelAccess.yField.getType(),
 				modelAccess.yField.getEmfNsURI());
 	}

 	/**
 	 * Creates the bindings for the given values.
 	 *
 	 * @param yField
 	 *            the y field
 	 * @param field
 	 *            the field
 	 */
 	protected void createBindings(YEnumOptionsGroup yField, OptionGroup field) {
 		if (modelAccess.yField.getSelectionType() == YSelectionType.MULTI) {
 			// create the model binding from widget to ECView-model
 			registerBinding(createBindingsMultiSelection(
 					castEObject(getModel()),
 					ExtensionModelPackage.Literals.YENUM_OPTIONS_GROUP__MULTI_SELECTION,
 					field, yField.getType()));
 		} else {
 			// create the model binding from widget to ECView-model
 			registerBinding(createBindingsSelection(
 					castEObject(getModel()),
 					ExtensionModelPackage.Literals.YENUM_OPTIONS_GROUP__SELECTION,
 					field, yField.getType()));

 		}

 		super.createBindings(yField, field, null);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#getWidget()
 	 */
 	@Override
 	public Component getWidget() {
 		return optionsGroup;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#isRendered()
 	 */
 	@Override
 	public boolean isRendered() {
 		return optionsGroup != null;
 	}

 	/**
 	 * {@inheritDoc}
 	 */
 	@Override
 	public void doUnrender() {
 		if (optionsGroup != null) {

 			// unbind all active bindings
 			unbind();

 			Component parent = ((Component) optionsGroup.getParent());
 			if (parent != null && parent instanceof ComponentContainer) {
 				((ComponentContainer) parent).removeComponent(optionsGroup);
 			}

 			// remove assocations
 			unassociateWidget(optionsGroup);

 			optionsGroup = null;
 		}
 	}

 	/**
 	 * {@inheritDoc}
 	 */
 	@Override
 	protected void internalDispose() {
 		try {
 			unrender();
 		} finally {
 			super.internalDispose();
 		}
 	}

 	/**
 	 * A helper class.
 	 */
 	private static class ModelAccess {

 		/** The y field. */
 		private final YEnumOptionsGroup yField;

 		/**
 		 * Instantiates a new model access.
 		 *
 		 * @param yField
 		 *            the y field
 		 */
 		public ModelAccess(YEnumOptionsGroup yField) {
 			super();
 			this.yField = yField;
 		}

 		/**
 		 * Gets the css class.
 		 *
 		 * @return the css class
 		 * @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssClass()
 		 */
 		public String getCssClass() {
 			return yField.getCssClass();
 		}

 		/**
 		 * Returns true, if the css class is not null and not empty.
 		 *
 		 * @return true, if is css class valid
 		 */
 		public boolean isCssClassValid() {
 			return getCssClass() != null && !getCssClass().equals("");
 		}

 		/**
 		 * Gets the css id.
 		 *
 		 * @return the css id
 		 * @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssID()
 		 */
 		public String getCssID() {
 			return yField.getCssID();
 		}

 		/**
 		 * Returns true, if the css id is not null and not empty.
 		 *
 		 * @return true, if is css id valid
 		 */
 		public boolean isCssIdValid() {
 			return getCssID() != null && !getCssID().equals("");
 		}

 		/**
 		 * Returns the label.
 		 *
 		 * @return the label
 		 */
 		public String getLabel() {
 			return yField.getDatadescription() != null ? yField
 					.getDatadescription().getLabel() : null;
 		}

 		/**
 		 * Returns the label.
 		 *
 		 * @return the label i18n key
 		 */
 		public String getLabelI18nKey() {
 			return yField.getDatadescription() != null ? yField
 					.getDatadescription().getLabelI18nKey() : null;
 		}
 	}

 	/**
 	 * Converts the string value of the item icon property to
 	 * {@link ThemeResource}.
 	 */
 	@SuppressWarnings("serial")
 	private class CustomOptionsGroup extends OptionGroup {

 		/** The item icon property id. */
 		private Object itemIconPropertyId;

 		/**
 		 * Instantiates a new custom options group.
 		 */
 		public CustomOptionsGroup() {
 		}

 		// @Override
 		// public Class<?> getType() {
 		// return EnumOptionBean.class;
 		// }

 		/* (non-Javadoc)
 		 * @see com.vaadin.ui.AbstractSelect#setItemIconPropertyId(java.lang.Object)
 		 */
 		@Override
 		public void setItemIconPropertyId(Object propertyId)
 				throws IllegalArgumentException {
 			if (propertyId == null) {
 				super.setItemIconPropertyId(propertyId);
 			} else if (!getContainerPropertyIds().contains(propertyId)) {
 				super.setItemIconPropertyId(propertyId);
 			} else if (String.class.isAssignableFrom(getType(propertyId))) {
 				itemIconPropertyId = propertyId;
 			} else {
 				super.setItemIconPropertyId(propertyId);
 			}
 		}

 		/* (non-Javadoc)
 		 * @see com.vaadin.ui.AbstractSelect#getItemIconPropertyId()
 		 */
 		public Object getItemIconPropertyId() {
 			return itemIconPropertyId != null ? itemIconPropertyId : super
 					.getItemIconPropertyId();
 		}

 		/* (non-Javadoc)
 		 * @see com.vaadin.ui.AbstractSelect#getItemIcon(java.lang.Object)
 		 */
 		public Resource getItemIcon(Object itemId) {
 			if (itemIconPropertyId == null) {
 				return super.getItemIcon(itemId);
 			} else {
 				final Property<?> ip = getContainerProperty(itemId,
 						getItemIconPropertyId());
 				if (ip == null) {
 					return null;
 				}
 				final Object icon = ip.getValue();
 				try {
 					if (icon instanceof String) {
 						IResourceProvider provider = getViewContext()
 								.getService(IResourceProvider.class.getName());
 						return provider.getResource((String) icon);
 					}
 				} catch (Exception e) {
 				}
 			}
 			return null;
 		}

 		/* (non-Javadoc)
 		 * @see com.vaadin.ui.AbstractField#getErrorMessage()
 		 */
 		@Override
 		public ErrorMessage getErrorMessage() {
 			if(isDisposed()) {
 				// after disposal, Vaadin will call this method once.
 				return null;
 			}

 			ErrorMessage message = super.getErrorMessage();
 			reportValidationError(message);
 			return message;
 		}
 	}
 }
	/**
	* Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* Florian Pirchner - Initial implementation
	*/
	package org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal;

	import java.util.HashSet;
	import java.util.Locale;
	import java.util.Set;

	import org.eclipse.core.databinding.observable.IObservable;
	import org.eclipse.core.databinding.observable.list.IObservableList;
	import org.eclipse.core.databinding.observable.value.IObservableValue;
	import org.eclipse.osbp.ecview.core.common.editpart.IElementEditpart;
	import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableBindingEndpoint;
	import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableCollectionEndpoint;
	import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableSelectionEndpoint;
	import org.eclipse.osbp.ecview.core.databinding.emf.model.ECViewModelBindable;
	import org.eclipse.osbp.ecview.core.extension.model.extension.ExtensionModelPackage;
	import org.eclipse.osbp.ecview.core.extension.model.extension.YEnumOptionsGroup;
	import org.eclipse.osbp.ecview.core.extension.model.extension.YSelectionType;
	import org.eclipse.osbp.ecview.core.ui.core.editparts.extension.IEnumOptionsGroupEditpart;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractFieldWidgetPresenter;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumConverter;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumOptionBean;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumOptionBeanHelper;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.data.EnumSetConverter;
	import org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.util.Util;
	import org.eclipse.osbp.runtime.web.vaadin.common.resource.IResourceProvider;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	import com.vaadin.data.Property;
	import com.vaadin.data.util.BeanItemContainer;
	import com.vaadin.data.util.ObjectProperty;
	import com.vaadin.data.util.converter.Converter;
	import com.vaadin.server.ErrorMessage;
	import com.vaadin.server.Resource;
	import com.vaadin.server.ThemeResource;
	import com.vaadin.ui.AbstractSelect.ItemCaptionMode;
	import com.vaadin.ui.Component;
	import com.vaadin.ui.ComponentContainer;
	import com.vaadin.ui.Field;
	import com.vaadin.ui.OptionGroup;

	// TODO: Auto-generated Javadoc
	/**
	* This presenter is responsible to render a list box on the given layout.
	*/
	@SuppressWarnings("restriction")
	public class EnumOptionsGroupPresentation extends
	AbstractFieldWidgetPresenter<Component> {

	/** The Constant LOGGER. */
	private static final Logger LOGGER = LoggerFactory
	.getLogger(EnumOptionsGroupPresentation.class);

	/** The model access. */
	private final ModelAccess modelAccess;

	/** The options group. */
	private OptionGroup optionsGroup;

	/** The property. */
	@SuppressWarnings("rawtypes")
	private ObjectProperty property;

	/**
	* Constructor.
	*
	* @param editpart
	* The editpart of that presenter
	*/
	public EnumOptionsGroupPresentation(IElementEditpart editpart) {
	super((IEnumOptionsGroupEditpart) editpart);
	this.modelAccess = new ModelAccess(
	(YEnumOptionsGroup) editpart.getModel());
	}

	/**
	* {@inheritDoc}
	*/
	@SuppressWarnings({ "unchecked", "rawtypes" })
	@Override
	public Component doCreateWidget(Object parent) {
	if (optionsGroup == null) {

	optionsGroup = new CustomOptionsGroup();
	optionsGroup.addStyleName(CSS_CLASS_CONTROL);
	optionsGroup.setImmediate(true);
	optionsGroup
	.setMultiSelect(modelAccess.yField.getSelectionType() == YSelectionType.MULTI);

	setupComponent(optionsGroup, getCastedModel());

	associateWidget(optionsGroup, modelAccess.yField);
	if (modelAccess.isCssIdValid()) {
	optionsGroup.setId(modelAccess.getCssID());
	} else {
	optionsGroup.setId(getEditpart().getId());
	}

	try {
	if (optionsGroup.isMultiSelect()) {
	property = new ObjectProperty(new HashSet(), Set.class);
	} else {
	if (modelAccess.yField.getType() != null) {
	property = new ObjectProperty(null,
	modelAccess.yField.getType());
	} else {
	property = new ObjectProperty(null, Object.class);
	}
	}
	optionsGroup.setPropertyDataSource(property);

	if (modelAccess.yField.getType() != null) {
	BeanItemContainer<EnumOptionBean> datasource = createDatasource((Class<? extends Enum<?>>) modelAccess.yField
	.getType());
	optionsGroup.setContainerDataSource(datasource);
	}

	optionsGroup.setConverter(getConverter());

	optionsGroup.setItemCaptionPropertyId("description");
	optionsGroup.setItemCaptionMode(ItemCaptionMode.PROPERTY);
	optionsGroup.setItemIconPropertyId("imagePath");

	// creates the binding for the field
	createBindings(modelAccess.yField, optionsGroup);

	if (modelAccess.isCssClassValid()) {
	optionsGroup.addStyleName(modelAccess.getCssClass());
	}

	applyCaptions();

	initializeField(optionsGroup);
	} catch (Exception e) {
	LOGGER.error("{}", e);
	}
	}
	return optionsGroup;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractFieldWidgetPresenter#getDefaultConverter()
	*/
	@SuppressWarnings({ "unchecked", "rawtypes" })
	@Override
	protected Converter getDefaultConverter() {
	if(optionsGroup == null) {
	return null;
	}

	if (modelAccess.yField.getSelectionType() == YSelectionType.MULTI) {
	return new EnumSetConverter(
	(Class<Enum<?>>) modelAccess.yField.getType(), optionsGroup);
	} else {
	return new EnumConverter(
	(Class<Enum<?>>) modelAccess.yField.getType(), optionsGroup);
	}
	}

	/**
	* Creates the datasource used for the enum field.
	*
	* @param enumClass
	* the enum class
	* @return the bean item container
	*/
	protected BeanItemContainer<EnumOptionBean> createDatasource(
	Class<? extends Enum<?>> enumClass) {
	BeanItemContainer<EnumOptionBean> datasource = new BeanItemContainer<EnumOptionBean>(
	EnumOptionBean.class);
	datasource.addAll(EnumOptionBeanHelper.getBeans(enumClass,
	getI18nService(), getLocale()));
	return datasource;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#doUpdateLocale(java.util.Locale)
	*/
	@Override
	protected void doUpdateLocale(Locale locale) {
	// no need to set the locale to the ui elements. Is handled by vaadin
	// internally.

	// update the captions
	applyCaptions();
	}

	/**
	* Applies the labels to the widgets.
	*/
	@SuppressWarnings("unchecked")
	protected void applyCaptions() {
	Util.applyCaptions(getI18nService(), modelAccess.getLabel(),
	modelAccess.getLabelI18nKey(), getLocale(), optionsGroup);

	EnumOptionBeanHelper.updateLocale((BeanItemContainer<EnumOptionBean>) optionsGroup.getContainerDataSource(),
	getI18nService(), getLocale());
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractFieldWidgetPresenter#doGetField()
	*/
	@Override
	protected Field<?> doGetField() {
	return optionsGroup;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.common.AbstractVaadinWidgetPresenter#internalGetObservableEndpoint(org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableBindingEndpoint)
	*/
	@Override
	protected IObservable internalGetObservableEndpoint(
	YEmbeddableBindingEndpoint bindableValue) {
	if (bindableValue == null) {
	throw new IllegalArgumentException(
	"BindableValue must not be null!");
	}

	if (bindableValue instanceof YEmbeddableCollectionEndpoint) {
	return internalGetCollectionEndpoint();
	} else if (bindableValue instanceof YEmbeddableSelectionEndpoint) {
	return internalGetSelectionEndpoint((YEmbeddableSelectionEndpoint) bindableValue);
	}
	throw new IllegalArgumentException("Not a valid input: "
	+ bindableValue);
	}

	/**
	* Returns the observable to observe the collection.
	*
	* @return the i observable list
	*/
	protected IObservableList internalGetCollectionEndpoint() {
	throw new UnsupportedOperationException();
	}

	/**
	* Returns the observable to observe the selection.
	*
	* @param yEndpoint
	* the y endpoint
	* @return the i observable value
	*/
	protected IObservableValue internalGetSelectionEndpoint(
	YEmbeddableSelectionEndpoint yEndpoint) {

	String attributePath = ECViewModelBindable.getAttributePath(
	ExtensionModelPackage.Literals.YENUM_OPTIONS_GROUP__SELECTION,
	yEndpoint.getAttributePath());

	// return the observable value for text
	return ECViewModelBindable.observeValue(castEObject(getModel()),
	attributePath, modelAccess.yField.getType(),
	modelAccess.yField.getEmfNsURI());
	}

	/**
	* Creates the bindings for the given values.
	*
	* @param yField
	* the y field
	* @param field
	* the field
	*/
	protected void createBindings(YEnumOptionsGroup yField, OptionGroup field) {
	if (modelAccess.yField.getSelectionType() == YSelectionType.MULTI) {
	// create the model binding from widget to ECView-model
	registerBinding(createBindingsMultiSelection(
	castEObject(getModel()),
	ExtensionModelPackage.Literals.YENUM_OPTIONS_GROUP__MULTI_SELECTION,
	field, yField.getType()));
	} else {
	// create the model binding from widget to ECView-model
	registerBinding(createBindingsSelection(
	castEObject(getModel()),
	ExtensionModelPackage.Literals.YENUM_OPTIONS_GROUP__SELECTION,
	field, yField.getType()));

	}

	super.createBindings(yField, field, null);
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#getWidget()
	*/
	@Override
	public Component getWidget() {
	return optionsGroup;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation#isRendered()
	*/
	@Override
	public boolean isRendered() {
	return optionsGroup != null;
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	public void doUnrender() {
	if (optionsGroup != null) {

	// unbind all active bindings
	unbind();

	Component parent = ((Component) optionsGroup.getParent());
	if (parent != null && parent instanceof ComponentContainer) {
	((ComponentContainer) parent).removeComponent(optionsGroup);
	}

	// remove assocations
	unassociateWidget(optionsGroup);

	optionsGroup = null;
	}
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	protected void internalDispose() {
	try {
	unrender();
	} finally {
	super.internalDispose();
	}
	}

	/**
	* A helper class.
	*/
	private static class ModelAccess {

	/** The y field. */
	private final YEnumOptionsGroup yField;

	/**
	* Instantiates a new model access.
	*
	* @param yField
	* the y field
	*/
	public ModelAccess(YEnumOptionsGroup yField) {
	super();
	this.yField = yField;
	}

	/**
	* Gets the css class.
	*
	* @return the css class
	* @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssClass()
	*/
	public String getCssClass() {
	return yField.getCssClass();
	}

	/**
	* Returns true, if the css class is not null and not empty.
	*
	* @return true, if is css class valid
	*/
	public boolean isCssClassValid() {
	return getCssClass() != null && !getCssClass().equals("");
	}

	/**
	* Gets the css id.
	*
	* @return the css id
	* @see org.eclipse.osbp.ecview.core.ui.core.model.core.YCssAble#getCssID()
	*/
	public String getCssID() {
	return yField.getCssID();
	}

	/**
	* Returns true, if the css id is not null and not empty.
	*
	* @return true, if is css id valid
	*/
	public boolean isCssIdValid() {
	return getCssID() != null && !getCssID().equals("");
	}

	/**
	* Returns the label.
	*
	* @return the label
	*/
	public String getLabel() {
	return yField.getDatadescription() != null ? yField
	.getDatadescription().getLabel() : null;
	}

	/**
	* Returns the label.
	*
	* @return the label i18n key
	*/
	public String getLabelI18nKey() {
	return yField.getDatadescription() != null ? yField
	.getDatadescription().getLabelI18nKey() : null;
	}
	}

	/**
	* Converts the string value of the item icon property to
	* {@link ThemeResource}.
	*/
	@SuppressWarnings("serial")
	private class CustomOptionsGroup extends OptionGroup {

	/** The item icon property id. */
	private Object itemIconPropertyId;

	/**
	* Instantiates a new custom options group.
	*/
	public CustomOptionsGroup() {
	}

	// @Override
	// public Class<?> getType() {
	// return EnumOptionBean.class;
	// }

	/* (non-Javadoc)
	* @see com.vaadin.ui.AbstractSelect#setItemIconPropertyId(java.lang.Object)
	*/
	@Override
	public void setItemIconPropertyId(Object propertyId)
	throws IllegalArgumentException {
	if (propertyId == null) {
	super.setItemIconPropertyId(propertyId);
	} else if (!getContainerPropertyIds().contains(propertyId)) {
	super.setItemIconPropertyId(propertyId);
	} else if (String.class.isAssignableFrom(getType(propertyId))) {
	itemIconPropertyId = propertyId;
	} else {
	super.setItemIconPropertyId(propertyId);
	}
	}

	/* (non-Javadoc)
	* @see com.vaadin.ui.AbstractSelect#getItemIconPropertyId()
	*/
	public Object getItemIconPropertyId() {
	return itemIconPropertyId != null ? itemIconPropertyId : super
	.getItemIconPropertyId();
	}

	/* (non-Javadoc)
	* @see com.vaadin.ui.AbstractSelect#getItemIcon(java.lang.Object)
	*/
	public Resource getItemIcon(Object itemId) {
	if (itemIconPropertyId == null) {
	return super.getItemIcon(itemId);
	} else {
	final Property<?> ip = getContainerProperty(itemId,
	getItemIconPropertyId());
	if (ip == null) {
	return null;
	}
	final Object icon = ip.getValue();
	try {
	if (icon instanceof String) {
	IResourceProvider provider = getViewContext()
	.getService(IResourceProvider.class.getName());
	return provider.getResource((String) icon);
	}
	} catch (Exception e) {
	}
	}
	return null;
	}

	/* (non-Javadoc)
	* @see com.vaadin.ui.AbstractField#getErrorMessage()
	*/
	@Override
	public ErrorMessage getErrorMessage() {
	if(isDisposed()) {
	// after disposal, Vaadin will call this method once.
	return null;
	}

	ErrorMessage message = super.getErrorMessage();
	reportValidationError(message);
	return message;
	}
	}
	}