/*****************************************************************************
 * Copyright (c) 2019 CEA LIST.
 *
 * 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:
 *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
 *****************************************************************************/

package org.eclipse.papyrus.model2doc.integration.emf.documentstructuretemplate.ui.internal.viewpoint;

import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype;
import org.eclipse.papyrus.model2doc.emf.documentstructuretemplate.DocumentTemplate;
import org.eclipse.papyrus.model2doc.integration.emf.documentstructuretemplate.representation.PapyrusDocumentPrototype;
import org.eclipse.papyrus.model2doc.integration.emf.documentstructuretemplate.representation.command.ICreateDocumentTemplateEditorCommand;

/**
 * Represents a prototype of Document Template View for the viewpoints infrastructure.
 *
 */
// TODO : this class is internal, but exported and used in the JUnit tests.
// We must move it.
public class PapyrusDocumentTemplateViewPrototype extends ViewPrototype implements ExtendedViewPrototype<DocumentTemplate> {

	private final ICreateDocumentTemplateEditorCommand command;

	/**
	 * Constructor.
	 *
	 * @param prototype
	 *            The PapyrusDocument representation
	 */
	public PapyrusDocumentTemplateViewPrototype(final PapyrusDocumentPrototype prototype, final ICreateDocumentTemplateEditorCommand command) {
		super(prototype);
		this.command = command;
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#isOwnerReassignable()
	 *
	 * @return
	 */
	@Override
	public boolean isOwnerReassignable() {
		// Users can always move documents that are part of their viewpoint
		return true;
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#instantiateOn(org.eclipse.emf.ecore.EObject, java.lang.String, boolean)
	 *
	 * @param owner
	 * @param name
	 * @param openCreatedView
	 * @return
	 */
	@Override
	public boolean instantiateOn(EObject owner, String name, boolean openCreatedView) {
		return instantiateOn(owner, owner, name, openCreatedView) != null;
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#instantiateOn(org.eclipse.emf.ecore.EObject)
	 *
	 * @param owner
	 * @return
	 */
	@Override
	public boolean instantiateOn(EObject owner) {
		return instantiateOn(owner, null);
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#instantiateOn(org.eclipse.emf.ecore.EObject, java.lang.String)
	 *
	 * @param owner
	 * @param name
	 * @return
	 */
	@Override
	public boolean instantiateOn(EObject owner, String name) {
		return instantiateOn(owner, name, true);
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#getCommandChangeOwner(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EObject)
	 *
	 * @param view
	 * @param target
	 * @return
	 */
	@Override
	public Command getCommandChangeOwner(EObject view, EObject target) {
		// TODO
		throw new UnsupportedOperationException();
		// final Document document = (Document) view;
		// final EObject previous = document.getContext();
		// return new AbstractCommand("Change document onwer element") {
		// @Override
		// public void execute() {
		// document.setOwner(target);
		// }
		//
		// @Override
		// public void undo() {
		// document.setOwner(previous);
		// }
		//
		// @Override
		// public void redo() {
		// document.setOwner(target);
		// }
		//
		// @Override
		// protected boolean prepare() {
		// return true;
		// }
		// };
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#getCommandChangeRoot(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EObject)
	 *
	 * @param view
	 * @param target
	 * @return
	 */
	@Override
	public Command getCommandChangeRoot(EObject view, EObject target) {
		throw new UnsupportedOperationException();

		// final Document document = (Document) view;
		// final EObject previous = document.getContext();
		// return new AbstractCommand("Change document root element") {
		// @Override
		// public void execute() {
		// document.setContext(target);
		// }
		//
		// @Override
		// public void undo() {
		// document.setContext(previous);
		// }
		//
		// @Override
		// public void redo() {
		// document.setContext(target);
		// }
		//
		// @Override
		// protected boolean prepare() {
		// return true;
		// }
		// };
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#getOwnerOf(org.eclipse.emf.ecore.EObject)
	 *
	 * @param view
	 * @return
	 */
	@Override
	public EObject getOwnerOf(EObject view) {
		// it is graphical context
		return ((DocumentTemplate) view).getGraphicalContext();
	}

	/**
	 * @see org.eclipse.papyrus.infra.viewpoints.policy.ViewPrototype#getRootOf(org.eclipse.emf.ecore.EObject)
	 *
	 * @param view
	 * @return
	 */
	@Override
	public EObject getRootOf(EObject view) {
		// it is semantic context
		return ((DocumentTemplate) view).getSemanticContext();
	}

	/**
	 * @see org.eclipse.papyrus.model2doc.integration.emf.documentstructuretemplate.ui.internal.viewpoint.ExtendedViewPrototype#instantiateOn(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EObject, java.lang.String, boolean)
	 *
	 * @param semanticOwner
	 * @param graphicalOwner
	 * @param name
	 * @param openCreatedView
	 * @return
	 */
	@Override
	public DocumentTemplate instantiateOn(final EObject semanticOwner, final EObject graphicalOwner, final String name, final boolean openCreatedView) {
		return command.execute(this, name, semanticOwner, graphicalOwner, openCreatedView);
	}

}