org.eclipse.nebula.widgets.nattable.examples.e4/src/org/eclipse/nebula/widgets/nattable/examples/e4/LifecycleManager.java

/*****************************************************************************
 * Copyright (c) 2016, 2020 Dirk Fauth.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *      Dirk Fauth <dirk.fauth@googlemail.com> - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.nebula.widgets.nattable.examples.e4;

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

import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.ui.MElementContainer;
import org.eclipse.e4.ui.model.application.ui.MUIElement;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.workbench.lifecycle.PreSave;
import org.eclipse.e4.ui.workbench.modeling.EModelService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class LifecycleManager {

    private static final Logger LOG = LoggerFactory.getLogger(LifecycleManager.class);

    public static final String CLOSE_ON_SHUTDOWN_TAG = "CloseOnShutdown";

    @PreSave
    void preSave(EModelService modelService, MApplication app) {
        List<String> tags = new ArrayList<>();
        tags.add(CLOSE_ON_SHUTDOWN_TAG);
        List<MPart> elementsWithTags = modelService.findElements(app, null, MPart.class, tags);

        for (MPart part : elementsWithTags) {
            try {
                part.setToBeRendered(false);
                part.setVisible(false);
                MElementContainer<MUIElement> parent = part.getParent();
                parent.getChildren().remove(part);
            } catch (Exception e) {
                LOG.error("Error on preSave", e);
            }
        }
    }
}