EDIT

// $Id$

/**

* Copyright (C) 2015 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.vaadin.session;

import java.util.List;

import com.vaadin.ui.Component;

/**

 * @author cmathew

 * @date 7 Apr 2015

 *

 */

public class CdmChangeEvent {

    public enum Action {

        Create,

        Update,

        Delete

    }

    private final Action action;

    private final List<Object> changedObjects;

    private Class<? extends Component> sourceType;

    private Object source;

    public CdmChangeEvent(Action action, List<Object> changedObjects, Class<? extends Component> sourceType) {

        this.action = action;

        this.changedObjects = changedObjects;

        if(changedObjects == null || changedObjects.isEmpty()) {

            throw new IllegalArgumentException("Changed objects cannot be empty");

        }

        this.sourceType = sourceType;

        if(sourceType == null) {

            throw new IllegalArgumentException("Source type cannot be null");

        }

    }

    public CdmChangeEvent(Action action, List<Object> changedObjects, Component source) {

        this.action = action;

        this.changedObjects = changedObjects;

        if(changedObjects == null || changedObjects.isEmpty()) {

            throw new IllegalArgumentException("Changed objects cannot be empty");

        }

        this.source= source;

        if(source == null) {

            throw new IllegalArgumentException("Source cannot be null");

        }

        this.sourceType = source.getClass();

    }

    /**

     * @return the action

     */

    public Action getAction() {

        return action;

    }

    /**

     * @return the changedObjects

     */

    public List<Object> getChangedObjects() {

        return changedObjects;

    }

    /**

     * @return the sourceType

     */

    public Class<? extends Component> getSourceType() {

        return sourceType;

    }

    /**

     * @return the source

     */

    public Object getSource() {

        return source;

    }

}