org.eclipse.osbp.ecview.core.common.editparts.emf/src/org/eclipse/osbp/ecview/core/common/editpart/emf/EmbeddableValueBindingEndpointEditpart.java

/**
 * 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 org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.osbp.ecview.core.common.editpart.DelegatingEditPartManager;
import org.eclipse.osbp.ecview.core.common.editpart.IEmbeddableEditpart;
import org.eclipse.osbp.ecview.core.common.editpart.IEmbeddableValueBindingEndpointEditpart;
import org.eclipse.osbp.ecview.core.common.editpart.emf.binding.BindableValueEndpointEditpart;
import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddableValueEndpoint;
import org.eclipse.osbp.ecview.core.common.presentation.IWidgetPresentation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Responsible to create an observable. The model of this editpart is used to
 * access the getObservableValue from the underlying widget presentation.
 */
public class EmbeddableValueBindingEndpointEditpart extends
		BindableValueEndpointEditpart<YEmbeddableValueEndpoint> implements
		IEmbeddableValueBindingEndpointEditpart {

	private static final Logger LOGGER = LoggerFactory
			.getLogger(EmbeddableValueBindingEndpointEditpart.class);

	@SuppressWarnings("unchecked")
	@Override
	public <A extends IObservableValue> A getObservable() {
		IEmbeddableEditpart embeddableEditpart = DelegatingEditPartManager
				.getInstance().getEditpart(viewContext, getModel().getElement());

		if (embeddableEditpart == null) {
			LOGGER.warn("editpart is null for embeddable");
			return null;
		}

		IWidgetPresentation<?> presentation = embeddableEditpart
				.getPresentation();
		return presentation != null ? (A) presentation
				.getObservableValue(getModel()) : null;
	}

	@Override
	public void setRefreshProvider(RefreshProvider refresh) {
		// nothing to do
	}

}