bundles/rcp/org.eclipse.apogy.rcp.mainmenu/src/org/eclipse/apogy/rcp/mainmenu/processors/MainMenuProcessor.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency 
 * 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:
 *     Pierre Allard,
 *     Regent L'Archeveque,
 *     Segastien Gemme - initial API and implementation
 *
 * SPDX-License-Identifier: EPL-1.0
 *******************************************************************************/
package org.eclipse.apogy.rcp.mainmenu.processors;

import javax.inject.Inject;

import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.ui.menu.MMenu;
import org.eclipse.e4.ui.model.application.ui.menu.MMenuFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MainMenuProcessor {

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

	@Inject
	protected MApplication app;

	@Execute
	public void run(@Optional IEclipseContext context, MApplication app) {
		/**
		 * This is used to fix the known e4 error that makes the menu dissapear when
		 * restarting the application.
		 */
		try {
			MMenu menu = app.getChildren().get(0).getMainMenu();
			if (menu == null) {
				menu = MMenuFactory.INSTANCE.createMenu();
				menu.setElementId("org.eclipse.ui.main.menu");
				app.getChildren().get(0).setMainMenu(menu);
			}
		} catch (Exception e) {
			Logger.error("Error during the initialization of the main menu.", e);
		}
	}
}