org.obeonetwork.dsl.uml2.core.internal.listeners.UmlDesignerSessionListener.java Source code

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Here is the source code for org.obeonetwork.dsl.uml2.core.internal.listeners.UmlDesignerSessionListener.java

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/*******************************************************************************
 * Copyright (c) 2015 Obeo.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Obeo - initial API and implementation
 *******************************************************************************/
package org.obeonetwork.dsl.uml2.core.internal.listeners;

import org.eclipse.sirius.business.api.session.Session;
import org.eclipse.sirius.business.api.session.SessionListener;
import org.eclipse.sirius.viewpoint.description.Viewpoint;
import org.obeonetwork.dsl.uml2.core.api.utils.UmlCoreViewpoints;

import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;

/**
 * Uml designer session listener used to listen session opening and viewpoint
 * selection change.
 *
 * @author Melanie Bats
 *         <a href="mailto:melanie.bats@obeo.fr">melanie.bats@obeo.fr</a>
 */
public class UmlDesignerSessionListener implements SessionListener {
    private final Session session;

    /**
     * Constructor.
     *
     * @param session
     *            the listened session
     */
    public UmlDesignerSessionListener(Session session) {
        this.session = session;
    }

    @Override
    public void notify(int changeKind) {
        if (changeKind == SessionListener.OPENED || changeKind == SessionListener.SELECTED_VIEWS_CHANGE_KIND) {
            // The Reused viewpoint must not be disabled by the user as other
            // viewpoints depend on it, so it
            // is re-enabled automatically at the session opening or when the
            // user change the viewpoint
            // selection
            if (Iterables.any(session.getSelectedViewpoints(false), new Predicate<Viewpoint>() {
                @Override
                public boolean apply(Viewpoint selectedViewpoint) {
                    return UmlCoreViewpoints.isUmlViewpoint(selectedViewpoint);
                }
            })) {
                if (Iterables.indexOf(session.getSelectedViewpoints(false), new Predicate<Viewpoint>() {
                    @Override
                    public boolean apply(Viewpoint selectedViewpoint) {
                        return UmlCoreViewpoints.isReusedViewpoint(selectedViewpoint);
                    }
                }) == -1) {
                    UmlCoreViewpoints.enableReused(session);
                }
            }

        }
    }
}