/*******************************************************************************
 * Copyright (C) 2018 Fondazione Bruno Kessler.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v20.html
 *  
 * Contributors:
 *     Luca Cristoforetti - initial API and implementation
 ******************************************************************************/
package org.polarsys.chess.diagramsCreator.commands;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.elk.core.service.DiagramLayoutEngine;
import org.eclipse.gmf.runtime.diagram.ui.parts.DiagramEditor;
import org.eclipse.papyrus.infra.ui.editor.IMultiDiagramEditor;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.handlers.HandlerUtil;
import eu.fbk.eclipse.standardtools.utils.ui.commands.AbstractJobCommand;
import eu.fbk.eclipse.standardtools.utils.ui.utils.CommandBuilder;

/**
 * Class that creates a single IBD by calling different handlers. 
 * It is triggered by the contextual menu item on a single element.
 * @author cristofo
 *
 */
public class CreateIBDSingleCommand extends AbstractJobCommand {
	private static final String IBD_CREATOR_COMMAND = "org.polarsys.chess.diagramsCreator.commands.createIBDHandler";

	public CreateIBDSingleCommand() {
		super("Create IBD Single");
	}

	@Override
	public void execPreJobOperations(ExecutionEvent event, IProgressMonitor monitor) throws Exception {
	}

	@Override
	public void execJobCommand(ExecutionEvent event, IProgressMonitor monitor) throws Exception {

		// Call the command to create the diagram and populate it
		try {
			final CommandBuilder diagramIBDCreator = CommandBuilder.build(IBD_CREATOR_COMMAND);
			diagramIBDCreator.execute();
		} catch (Exception e) {
			e.printStackTrace();
		}

		// Wait some time to complete the elements creation
		Thread.sleep(1000);

		// Call the Eclipse Layout Kernel engine
		// Get the active editor, which is expected to contain the diagram for applying layout
		IEditorPart editorPart = HandlerUtil.getActiveEditor(event);        

		if (editorPart instanceof IMultiDiagramEditor) {
			editorPart = ((IMultiDiagramEditor) editorPart).getActiveEditor();
		}

		if (editorPart instanceof DiagramEditor) {
			Object diagramPart = null;
			final boolean zoomToFit = true;
			DiagramLayoutEngine.invokeLayout(editorPart, diagramPart, false, false, false, zoomToFit);
		}
	}

	@Override
	public void execPostJobOperations(ExecutionEvent event, NullProgressMonitor nullProgressMonitor) throws Exception {
		// TODO Auto-generated method stub
		
	}
}