bundles/core/org.eclipse.apogy.core.invocator.ui/src/org/eclipse/apogy/core/invocator/ui/handlers/SuspendProgramRuntimeHandler.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,
 *     Olivier L. Larouche - initial API and implementation
 *
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.core.invocator.ui.handlers;

import java.util.List;

import org.eclipse.apogy.core.invocator.AbstractProgramRuntime;
import org.eclipse.apogy.core.invocator.ApogyCoreInvocatorFacade;
import org.eclipse.apogy.core.invocator.Program;
import org.eclipse.apogy.core.invocator.ProgramRuntimeState;
import org.eclipse.apogy.core.invocator.ui.parts.ProgramPart;
import org.eclipse.e4.core.di.annotations.CanExecute;
import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.model.application.ui.basic.impl.PartImpl;

@SuppressWarnings("restriction")
public class SuspendProgramRuntimeHandler extends AbstractProgramRuntimeHandler {

	@Execute
	public void execute(MPart part) {
		ProgramPart programPart = (ProgramPart) ((PartImpl) part).getObject();

		Program program = programPart.getSelectedProgram();

		List<AbstractProgramRuntime> runtimes = programPart.getRuntimes();
		if (runtimes.size() > 0) {
			for (int i = runtimes.size() - 1; i >= 0; i--) {
				AbstractProgramRuntime runtime = runtimes.get(i);
				if (runtime.getProgram() == program) {
					runtime.suspend();
					break;
				}
			}
		}
	}

	@Override
	@CanExecute
	public boolean canExecute(MPart part) {
		if (ApogyCoreInvocatorFacade.INSTANCE.getActiveInvocatorSession() == null) {
			return false;
		}

		if (ApogyCoreInvocatorFacade.INSTANCE.getActiveInvocatorSession().getProgramRuntimesList() == null) {
			return false;
		}

		if (part instanceof PartImpl && ((PartImpl) part).getObject() instanceof ProgramPart) {
			ProgramPart programPart = (ProgramPart) ((PartImpl) part).getObject();

			Program program = programPart.getSelectedProgram();

			if (program == null)
				return false;

			for (AbstractProgramRuntime runtime : programPart.getRuntimes()) {
				if (programPart.getRuntimes().indexOf(runtime) == programPart.getRuntimes().size() - 1
						&& runtime.getProgram() == program && runtime.getState() == ProgramRuntimeState.RUNNING) {
					/** Can be executed if runtime is running */
					return true;
				}
			}
		}
		return false;
	}
}