org.eclipse.osbp.ecview.core.common.editparts.emf/src/org/eclipse/osbp/ecview/core/common/editpart/emf/FieldEditpart.java - osbp/org.eclipse.osbp.ecview.core - 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.ecview.core.common.editpart.emf;

 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;

 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.osbp.ecview.core.common.editpart.IConverterEditpart;
 import org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart;
 import org.eclipse.osbp.ecview.core.common.editpart.datatypes.IDatatypeEditpart.DatatypeChangeEvent;
 import org.eclipse.osbp.ecview.core.common.editpart.validation.IValidatorEditpart;
 import org.eclipse.osbp.ecview.core.common.model.core.CoreModelPackage;
 import org.eclipse.osbp.ecview.core.common.model.core.YConverter;
 import org.eclipse.osbp.ecview.core.common.model.core.YField;
 import org.eclipse.osbp.ecview.core.common.model.validation.YValidator;
 import org.eclipse.osbp.ecview.core.common.presentation.IFieldPresentation;
 import org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation;
 import org.eclipse.osbp.runtime.common.validation.IStatus;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 // TODO: Auto-generated Javadoc
 /**
  * Implementation of {@link IFieldEditpart}.
  *
  * @param <M>
  *            the generic type
  */
 public class FieldEditpart<M extends YField> extends EmbeddableEditpart<M>
 		implements IFieldEditpart {

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

 	/** The validators. */
 	private List<IValidatorEditpart> validators;

 	/** The internal validators. */
 	private List<IValidatorEditpart> internalValidators;

 	/** The converter editpart. */
 	private IConverterEditpart converterEditpart;

 	/**
 	 * A default constructor.
 	 */
 	protected FieldEditpart() {
 	}

 	/**
 	 * A constructor that becomes passed the datatype feature.
 	 *
 	 * @param datatypeFeature
 	 *            the datatype feature
 	 */
 	public FieldEditpart(EStructuralFeature datatypeFeature) {
 		super(datatypeFeature);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#doInitPresentation(org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation)
 	 */
 	@Override
 	protected void doInitPresentation(IWidgetPresentation<?> presentation) {
 		IFieldPresentation<?> fieldPresentation = (IFieldPresentation<?>) presentation;

 		if (fieldPresentation == null) {
 			LOGGER.warn("Presentation is null for " + getModel());
 			return;
 		}

 		converterToPresentation(fieldPresentation);

 		ensureValidatorsLoaded();
 		for (IValidatorEditpart validatorEditpart : validators) {
 			fieldPresentation.addValidator(validatorEditpart.getValidator());
 		}

 		if (internalValidators != null) {
 			for (IValidatorEditpart validatorEditpart : internalValidators) {
 				fieldPresentation
 						.addValidator(validatorEditpart.getValidator());
 			}
 		}
 	}

 	/**
 	 * Converter to presentation.
 	 *
 	 * @param fieldPresentation
 	 *            the field presentation
 	 */
 	protected void converterToPresentation(
 			IFieldPresentation<?> fieldPresentation) {
 		IConverterEditpart converter = getConverter();
 		if (converter != null) {
 			fieldPresentation.setConverter(converter.getDelegate());
 		} else {
 			fieldPresentation.setConverter(null);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#notifyDatatypeChanged(org.eclipse.osbp.ecview.core.common.editpart.datatypes.IDatatypeEditpart.DatatypeChangeEvent)
 	 */
 	@Override
 	public void notifyDatatypeChanged(DatatypeChangeEvent event) {

 		super.notifyDatatypeChanged(event);

 		// Remove the validators that should be removed
 		//
 		for (IValidatorEditpart validator : event.getRemovedValidators()) {
 			getModel().getInternalValidators().remove(
 					(YValidator) validator.getModel());
 		}

 		// Add the validators that should be added
 		//
 		for (IValidatorEditpart validator : event.getAddedValidators()) {
 			getModel().getInternalValidators().add(
 					(YValidator) validator.getModel());
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#addValidator(org.eclipse.osbp.ecview.core.common.editpart.validation.IValidatorEditpart)
 	 */
 	@Override
 	public void addValidator(IValidatorEditpart validator) {
 		try {
 			checkDisposed();

 			// add the element by using the model
 			//
 			YField yField = getModel();
 			YValidator yValidator = (YValidator) validator.getModel();
 			yField.getValidators().add(yValidator);

 			// BEGIN SUPRESS CATCH EXCEPTION
 		} catch (RuntimeException e) {
 			// END SUPRESS CATCH EXCEPTION
 			LOGGER.error("{}", e);
 			throw e;
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#removeValidator(org.eclipse.osbp.ecview.core.common.editpart.validation.IValidatorEditpart)
 	 */
 	@Override
 	public void removeValidator(IValidatorEditpart validator) {
 		try {
 			checkDisposed();

 			// remove the element by using the model
 			//
 			YField yField = getModel();
 			YValidator yValidator = (YValidator) validator.getModel();
 			yField.getValidators().remove(yValidator);
 			// BEGIN SUPRESS CATCH EXCEPTION
 		} catch (RuntimeException e) {
 			// END SUPRESS CATCH EXCEPTION
 			LOGGER.error("{}", e);
 			throw e;
 		}

 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#addExternalStatus(org.eclipse.osbp.runtime.common.validation.IStatus)
 	 */
 	@Override
 	public void addExternalStatus(IStatus status) {
 		if (isRendered()) {
 			((IFieldPresentation<?>) getPresentation())
 					.addExternalStatus(status);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#removeExternalStatus(org.eclipse.osbp.runtime.common.validation.IStatus)
 	 */
 	@Override
 	public void removeExternalStatus(IStatus status) {
 		if (isRendered()) {
 			((IFieldPresentation<?>) getPresentation())
 					.removeExternalStatus(status);
 		}
 	}


 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#resetExternalStatus()
 	 */
 	@Override
 	public void resetExternalStatus() {
 		if (isRendered()) {
 			((IFieldPresentation<?>) getPresentation())
 					.resetExternalStatus();
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelAdd(int, org.eclipse.emf.common.notify.Notification)
 	 */
 	@Override
 	protected void handleModelAdd(int featureId, Notification notification) {
 		checkDisposed();

 		switch (featureId) {
 		case CoreModelPackage.YFIELD__VALIDATORS:
 			YValidator yValidator = (YValidator) notification.getNewValue();

 			IValidatorEditpart editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
 			internalAddValidator(editPart);
 			break;
 		case CoreModelPackage.YFIELD__INTERNAL_VALIDATORS:
 			yValidator = (YValidator) notification.getNewValue();

 			editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
 			internalAddInternalValidator(editPart);
 			break;
 		default:
 			break;
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#handleModelSet(int, org.eclipse.emf.common.notify.Notification)
 	 */
 	@Override
 	protected void handleModelSet(int featureId, Notification notification) {
 		checkDisposed();

 		switch (featureId) {
 		case CoreModelPackage.YFIELD__CONVERTER:
 			YConverter yConverter = (YConverter) notification.getNewValue();

 			IConverterEditpart editPart = (IConverterEditpart) getEditpart(viewContext, yConverter);
 			internalSetConverter(editPart);

 			if (isRendered()) {
 				converterToPresentation((IFieldPresentation<?>) getPresentation());
 			}
 			break;
 		default:
 			super.handleModelSet(featureId, notification);
 			break;
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#getConverter()
 	 */
 	public IConverterEditpart getConverter() {
 		checkDisposed();

 		if (converterEditpart == null) {
 			loadConverter();
 		}
 		return converterEditpart;
 	}

 	/**
 	 * Load converter.
 	 */
 	protected void loadConverter() {
 		if (converterEditpart == null) {
 			YConverter yConverter = getModel().getConverter();
 			internalSetConverter((IConverterEditpart) getEditpart(viewContext, yConverter));
 		}
 	}

 	/**
 	 * Internal set converter.
 	 *
 	 * @param converterEditpart
 	 *            the converter editpart
 	 */
 	protected void internalSetConverter(IConverterEditpart converterEditpart) {
 		this.converterEditpart = converterEditpart;
 	}

 	/**
 	 * Is called to change the internal state and add the given editpart to the
 	 * list of validators.
 	 *
 	 * @param validatorEditpart
 	 *            The editpart to be added
 	 */
 	protected void internalAddValidator(IValidatorEditpart validatorEditpart) {
 		checkDisposed();

 		ensureValidatorsLoaded();
 		if (!validators.contains(validatorEditpart)) {
 			validators.add(validatorEditpart);

 			// handle the presentation
 			//
 			if (isPresentationPresent()) {
 				IFieldPresentation<?> presenter = getPresentation();
 				presenter.addValidator(validatorEditpart.getValidator());
 			}
 		}
 	}

 	/**
 	 * Is called to change the internal state and add the given editpart to the
 	 * list of internal validators.
 	 *
 	 * @param validatorEditpart
 	 *            The editpart to be added
 	 */
 	protected void internalAddInternalValidator(
 			IValidatorEditpart validatorEditpart) {
 		checkDisposed();

 		if (internalValidators == null) {
 			internalValidators = new ArrayList<>();
 		}

 		if (!internalValidators.contains(validatorEditpart)) {
 			internalValidators.add(validatorEditpart);

 			// handle the presentation
 			//
 			if (isPresentationPresent()) {
 				IFieldPresentation<?> presenter = getPresentation();
 				presenter.addValidator(validatorEditpart.getValidator());
 			}
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelRemove(int, org.eclipse.emf.common.notify.Notification)
 	 */
 	@Override
 	protected void handleModelRemove(int featureId, Notification notification) {
 		checkDisposed();

 		switch (featureId) {
 		case CoreModelPackage.YFIELD__VALIDATORS:
 			YValidator yValidator = (YValidator) notification.getOldValue();

 			IValidatorEditpart editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
 			internalRemoveValidator(editPart);
 			break;
 		case CoreModelPackage.YFIELD__INTERNAL_VALIDATORS:
 			yValidator = (YValidator) notification.getOldValue();

 			editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
 			internalRemoveInternalValidator(editPart);
 			break;
 		default:
 			break;
 		}
 	}

 	/**
 	 * Ensures that the internal validators are loaded properly.
 	 */
 	private void ensureValidatorsLoaded() {
 		if (validators == null) {
 			internalLoadValidators();
 		}
 	}

 	/**
 	 * Is called to load and initialize all validators.
 	 */
 	protected void internalLoadValidators() {
 		checkDisposed();

 		if (validators == null) {
 			validators = new ArrayList<IValidatorEditpart>();
 			for (YValidator yValidator : getModel().getValidators()) {
 				IValidatorEditpart editPart = getEditpart(viewContext, yValidator);
 				internalAddValidator(editPart);
 			}
 		}
 	}

 	/**
 	 * Is called to change the internal state and remove the given editpart from
 	 * the list of validators.
 	 *
 	 * @param validatorEditpart
 	 *            The editpart to be removed
 	 */
 	protected void internalRemoveValidator(IValidatorEditpart validatorEditpart) {
 		checkDisposed();

 		if (validators != null && validatorEditpart != null) {
 			validators.remove(validatorEditpart);

 			// handle the presentation
 			//
 			if (isPresentationPresent()) {
 				IFieldPresentation<?> presenter = getPresentation();
 				presenter.removeValidator(validatorEditpart.getValidator());
 			}
 		}
 	}

 	/**
 	 * Is called to change the internal state and remove the given editpart from
 	 * the list of internal validators.
 	 *
 	 * @param validatorEditpart
 	 *            The editpart to be removed
 	 */
 	protected void internalRemoveInternalValidator(
 			IValidatorEditpart validatorEditpart) {
 		checkDisposed();

 		if (internalValidators != null && validatorEditpart != null) {
 			internalValidators.remove(validatorEditpart);

 			// handle the presentation
 			//
 			if (isPresentationPresent()) {
 				IFieldPresentation<?> presenter = getPresentation();
 				presenter.removeValidator(validatorEditpart.getValidator());
 			}

 			validatorEditpart.dispose();
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#getValidators()
 	 */
 	@Override
 	public List<IValidatorEditpart> getValidators() {
 		ensureValidatorsLoaded();
 		return Collections.unmodifiableList(validators);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#internalDispose()
 	 */
 	@Override
 	protected void internalDispose() {
 		try {
 			// lazy loading: edit parts also have to be disposed if they have
 			// not been loaded yet, but exist in the model.
 			if (validators != null || getModel().getValidators().size() > 0) {
 				List<IValidatorEditpart> tempElements = getValidators();
 				IFieldPresentation<?> presentation = internalGetPresentation();
 				synchronized (validators) {
 					for (IValidatorEditpart validatorEditpart : tempElements
 							.toArray(new IValidatorEditpart[tempElements.size()])) {
 						if (presentation != null) {
 							presentation.removeValidator(validatorEditpart
 									.getValidator());
 						}
 						validatorEditpart.dispose();
 					}
 				}
 				validators = null;
 			}

 			if (converterEditpart != null) {
 				converterEditpart.dispose();
 				converterEditpart = null;
 			}

 		} finally {
 			super.internalDispose();
 		}
 	}

 	/**
 	 * Returns true, if the presenter is present.
 	 *
 	 * @return true, if is presentation present
 	 */
 	protected boolean isPresentationPresent() {
 		return internalGetPresentation() != null;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.osbp.ecview.core.common.editpart.datatypes.IDatatypeEditpart.DatatypeBridge#getDatatypeValidators()
 	 */
 	@Override
 	public List<IValidatorEditpart> getDatatypeValidators() {
 		return internalValidators != null ? Collections
 				.unmodifiableList(internalValidators) : Collections
 				.<IValidatorEditpart> emptyList();
 	}

 }
	/**
	* 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.ecview.core.common.editpart.emf;

	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.List;

	import org.eclipse.emf.common.notify.Notification;
	import org.eclipse.emf.ecore.EStructuralFeature;
	import org.eclipse.osbp.ecview.core.common.editpart.IConverterEditpart;
	import org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart;
	import org.eclipse.osbp.ecview.core.common.editpart.datatypes.IDatatypeEditpart.DatatypeChangeEvent;
	import org.eclipse.osbp.ecview.core.common.editpart.validation.IValidatorEditpart;
	import org.eclipse.osbp.ecview.core.common.model.core.CoreModelPackage;
	import org.eclipse.osbp.ecview.core.common.model.core.YConverter;
	import org.eclipse.osbp.ecview.core.common.model.core.YField;
	import org.eclipse.osbp.ecview.core.common.model.validation.YValidator;
	import org.eclipse.osbp.ecview.core.common.presentation.IFieldPresentation;
	import org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation;
	import org.eclipse.osbp.runtime.common.validation.IStatus;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	// TODO: Auto-generated Javadoc
	/**
	* Implementation of {@link IFieldEditpart}.
	*
	* @param <M>
	* the generic type
	*/
	public class FieldEditpart<M extends YField> extends EmbeddableEditpart<M>
	implements IFieldEditpart {

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

	/** The validators. */
	private List<IValidatorEditpart> validators;

	/** The internal validators. */
	private List<IValidatorEditpart> internalValidators;

	/** The converter editpart. */
	private IConverterEditpart converterEditpart;

	/**
	* A default constructor.
	*/
	protected FieldEditpart() {
	}

	/**
	* A constructor that becomes passed the datatype feature.
	*
	* @param datatypeFeature
	* the datatype feature
	*/
	public FieldEditpart(EStructuralFeature datatypeFeature) {
	super(datatypeFeature);
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#doInitPresentation(org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation)
	*/
	@Override
	protected void doInitPresentation(IWidgetPresentation<?> presentation) {
	IFieldPresentation<?> fieldPresentation = (IFieldPresentation<?>) presentation;

	if (fieldPresentation == null) {
	LOGGER.warn("Presentation is null for " + getModel());
	return;
	}

	converterToPresentation(fieldPresentation);

	ensureValidatorsLoaded();
	for (IValidatorEditpart validatorEditpart : validators) {
	fieldPresentation.addValidator(validatorEditpart.getValidator());
	}

	if (internalValidators != null) {
	for (IValidatorEditpart validatorEditpart : internalValidators) {
	fieldPresentation
	.addValidator(validatorEditpart.getValidator());
	}
	}
	}

	/**
	* Converter to presentation.
	*
	* @param fieldPresentation
	* the field presentation
	*/
	protected void converterToPresentation(
	IFieldPresentation<?> fieldPresentation) {
	IConverterEditpart converter = getConverter();
	if (converter != null) {
	fieldPresentation.setConverter(converter.getDelegate());
	} else {
	fieldPresentation.setConverter(null);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#notifyDatatypeChanged(org.eclipse.osbp.ecview.core.common.editpart.datatypes.IDatatypeEditpart.DatatypeChangeEvent)
	*/
	@Override
	public void notifyDatatypeChanged(DatatypeChangeEvent event) {

	super.notifyDatatypeChanged(event);

	// Remove the validators that should be removed
	//
	for (IValidatorEditpart validator : event.getRemovedValidators()) {
	getModel().getInternalValidators().remove(
	(YValidator) validator.getModel());
	}

	// Add the validators that should be added
	//
	for (IValidatorEditpart validator : event.getAddedValidators()) {
	getModel().getInternalValidators().add(
	(YValidator) validator.getModel());
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#addValidator(org.eclipse.osbp.ecview.core.common.editpart.validation.IValidatorEditpart)
	*/
	@Override
	public void addValidator(IValidatorEditpart validator) {
	try {
	checkDisposed();

	// add the element by using the model
	//
	YField yField = getModel();
	YValidator yValidator = (YValidator) validator.getModel();
	yField.getValidators().add(yValidator);

	// BEGIN SUPRESS CATCH EXCEPTION
	} catch (RuntimeException e) {
	// END SUPRESS CATCH EXCEPTION
	LOGGER.error("{}", e);
	throw e;
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#removeValidator(org.eclipse.osbp.ecview.core.common.editpart.validation.IValidatorEditpart)
	*/
	@Override
	public void removeValidator(IValidatorEditpart validator) {
	try {
	checkDisposed();

	// remove the element by using the model
	//
	YField yField = getModel();
	YValidator yValidator = (YValidator) validator.getModel();
	yField.getValidators().remove(yValidator);
	// BEGIN SUPRESS CATCH EXCEPTION
	} catch (RuntimeException e) {
	// END SUPRESS CATCH EXCEPTION
	LOGGER.error("{}", e);
	throw e;
	}

	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#addExternalStatus(org.eclipse.osbp.runtime.common.validation.IStatus)
	*/
	@Override
	public void addExternalStatus(IStatus status) {
	if (isRendered()) {
	((IFieldPresentation<?>) getPresentation())
	.addExternalStatus(status);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#removeExternalStatus(org.eclipse.osbp.runtime.common.validation.IStatus)
	*/
	@Override
	public void removeExternalStatus(IStatus status) {
	if (isRendered()) {
	((IFieldPresentation<?>) getPresentation())
	.removeExternalStatus(status);
	}
	}



	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#resetExternalStatus()
	*/
	@Override
	public void resetExternalStatus() {
	if (isRendered()) {
	((IFieldPresentation<?>) getPresentation())
	.resetExternalStatus();
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelAdd(int, org.eclipse.emf.common.notify.Notification)
	*/
	@Override
	protected void handleModelAdd(int featureId, Notification notification) {
	checkDisposed();

	switch (featureId) {
	case CoreModelPackage.YFIELD__VALIDATORS:
	YValidator yValidator = (YValidator) notification.getNewValue();

	IValidatorEditpart editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
	internalAddValidator(editPart);
	break;
	case CoreModelPackage.YFIELD__INTERNAL_VALIDATORS:
	yValidator = (YValidator) notification.getNewValue();

	editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
	internalAddInternalValidator(editPart);
	break;
	default:
	break;
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#handleModelSet(int, org.eclipse.emf.common.notify.Notification)
	*/
	@Override
	protected void handleModelSet(int featureId, Notification notification) {
	checkDisposed();

	switch (featureId) {
	case CoreModelPackage.YFIELD__CONVERTER:
	YConverter yConverter = (YConverter) notification.getNewValue();

	IConverterEditpart editPart = (IConverterEditpart) getEditpart(viewContext, yConverter);
	internalSetConverter(editPart);

	if (isRendered()) {
	converterToPresentation((IFieldPresentation<?>) getPresentation());
	}
	break;
	default:
	super.handleModelSet(featureId, notification);
	break;
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#getConverter()
	*/
	public IConverterEditpart getConverter() {
	checkDisposed();

	if (converterEditpart == null) {
	loadConverter();
	}
	return converterEditpart;
	}

	/**
	* Load converter.
	*/
	protected void loadConverter() {
	if (converterEditpart == null) {
	YConverter yConverter = getModel().getConverter();
	internalSetConverter((IConverterEditpart) getEditpart(viewContext, yConverter));
	}
	}

	/**
	* Internal set converter.
	*
	* @param converterEditpart
	* the converter editpart
	*/
	protected void internalSetConverter(IConverterEditpart converterEditpart) {
	this.converterEditpart = converterEditpart;
	}

	/**
	* Is called to change the internal state and add the given editpart to the
	* list of validators.
	*
	* @param validatorEditpart
	* The editpart to be added
	*/
	protected void internalAddValidator(IValidatorEditpart validatorEditpart) {
	checkDisposed();

	ensureValidatorsLoaded();
	if (!validators.contains(validatorEditpart)) {
	validators.add(validatorEditpart);

	// handle the presentation
	//
	if (isPresentationPresent()) {
	IFieldPresentation<?> presenter = getPresentation();
	presenter.addValidator(validatorEditpart.getValidator());
	}
	}
	}

	/**
	* Is called to change the internal state and add the given editpart to the
	* list of internal validators.
	*
	* @param validatorEditpart
	* The editpart to be added
	*/
	protected void internalAddInternalValidator(
	IValidatorEditpart validatorEditpart) {
	checkDisposed();

	if (internalValidators == null) {
	internalValidators = new ArrayList<>();
	}

	if (!internalValidators.contains(validatorEditpart)) {
	internalValidators.add(validatorEditpart);

	// handle the presentation
	//
	if (isPresentationPresent()) {
	IFieldPresentation<?> presenter = getPresentation();
	presenter.addValidator(validatorEditpart.getValidator());
	}
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.ElementEditpart#handleModelRemove(int, org.eclipse.emf.common.notify.Notification)
	*/
	@Override
	protected void handleModelRemove(int featureId, Notification notification) {
	checkDisposed();

	switch (featureId) {
	case CoreModelPackage.YFIELD__VALIDATORS:
	YValidator yValidator = (YValidator) notification.getOldValue();

	IValidatorEditpart editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
	internalRemoveValidator(editPart);
	break;
	case CoreModelPackage.YFIELD__INTERNAL_VALIDATORS:
	yValidator = (YValidator) notification.getOldValue();

	editPart = (IValidatorEditpart) getEditpart(viewContext, yValidator);
	internalRemoveInternalValidator(editPart);
	break;
	default:
	break;
	}
	}

	/**
	* Ensures that the internal validators are loaded properly.
	*/
	private void ensureValidatorsLoaded() {
	if (validators == null) {
	internalLoadValidators();
	}
	}

	/**
	* Is called to load and initialize all validators.
	*/
	protected void internalLoadValidators() {
	checkDisposed();

	if (validators == null) {
	validators = new ArrayList<IValidatorEditpart>();
	for (YValidator yValidator : getModel().getValidators()) {
	IValidatorEditpart editPart = getEditpart(viewContext, yValidator);
	internalAddValidator(editPart);
	}
	}
	}

	/**
	* Is called to change the internal state and remove the given editpart from
	* the list of validators.
	*
	* @param validatorEditpart
	* The editpart to be removed
	*/
	protected void internalRemoveValidator(IValidatorEditpart validatorEditpart) {
	checkDisposed();

	if (validators != null && validatorEditpart != null) {
	validators.remove(validatorEditpart);

	// handle the presentation
	//
	if (isPresentationPresent()) {
	IFieldPresentation<?> presenter = getPresentation();
	presenter.removeValidator(validatorEditpart.getValidator());
	}
	}
	}

	/**
	* Is called to change the internal state and remove the given editpart from
	* the list of internal validators.
	*
	* @param validatorEditpart
	* The editpart to be removed
	*/
	protected void internalRemoveInternalValidator(
	IValidatorEditpart validatorEditpart) {
	checkDisposed();

	if (internalValidators != null && validatorEditpart != null) {
	internalValidators.remove(validatorEditpart);

	// handle the presentation
	//
	if (isPresentationPresent()) {
	IFieldPresentation<?> presenter = getPresentation();
	presenter.removeValidator(validatorEditpart.getValidator());
	}

	validatorEditpart.dispose();
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.IFieldEditpart#getValidators()
	*/
	@Override
	public List<IValidatorEditpart> getValidators() {
	ensureValidatorsLoaded();
	return Collections.unmodifiableList(validators);
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.emf.EmbeddableEditpart#internalDispose()
	*/
	@Override
	protected void internalDispose() {
	try {
	// lazy loading: edit parts also have to be disposed if they have
	// not been loaded yet, but exist in the model.
	if (validators != null \|\| getModel().getValidators().size() > 0) {
	List<IValidatorEditpart> tempElements = getValidators();
	IFieldPresentation<?> presentation = internalGetPresentation();
	synchronized (validators) {
	for (IValidatorEditpart validatorEditpart : tempElements
	.toArray(new IValidatorEditpart[tempElements.size()])) {
	if (presentation != null) {
	presentation.removeValidator(validatorEditpart
	.getValidator());
	}
	validatorEditpart.dispose();
	}
	}
	validators = null;
	}

	if (converterEditpart != null) {
	converterEditpart.dispose();
	converterEditpart = null;
	}

	} finally {
	super.internalDispose();
	}
	}

	/**
	* Returns true, if the presenter is present.
	*
	* @return true, if is presentation present
	*/
	protected boolean isPresentationPresent() {
	return internalGetPresentation() != null;
	}

	/* (non-Javadoc)
	* @see org.eclipse.osbp.ecview.core.common.editpart.datatypes.IDatatypeEditpart.DatatypeBridge#getDatatypeValidators()
	*/
	@Override
	public List<IValidatorEditpart> getDatatypeValidators() {
	return internalValidators != null ? Collections
	.unmodifiableList(internalValidators) : Collections
	.<IValidatorEditpart> emptyList();
	}

	}