org.eclipse.osbp.vaadin.emf/src/org/eclipse/osbp/vaadin/emf/views/EmfCommandStackTableViewer.java

/*
 *                                                                            
 *  Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  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:                                                      
 * 	   Florian Pirchner - Initial implementation
 *     Loetz GmbH&Co.KG                               
 * 
 */
package org.eclipse.osbp.vaadin.emf.views;

import java.util.EventObject;
import java.util.List;

import org.eclipse.emf.common.command.Command;
import org.eclipse.emf.common.command.CommandStackListener;
import org.eclipse.osbp.vaadin.emf.api.IModelingContext;

import com.vaadin.data.Item;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Panel;
import com.vaadin.ui.Table;
import com.vaadin.ui.VerticalLayout;

// TODO: Auto-generated Javadoc
/**
 * The Class EmfCommandStackTableViewer.
 */
@SuppressWarnings({ "serial", "restriction" })
public class EmfCommandStackTableViewer extends CustomComponent implements
		CommandStackListener {

	/** The Constant EVENT_TYPE_NAME. */
	public static final String EVENT_TYPE_NAME = "eventType";

	/** The table. */
	private Table table;

	/** The modeling context. */
	private IModelingContext modelingContext;

	/**
	 * Instantiates a new emf command stack table viewer.
	 *
	 * @param modelingContext
	 *            the modeling context
	 */
	public EmfCommandStackTableViewer(IModelingContext modelingContext) {
		this.modelingContext = modelingContext;

		modelingContext.getCommandStack().addCommandStackListener(this);

		Panel mainLayout = new Panel();
		mainLayout.setSizeFull();
		setCompositionRoot(mainLayout);

		VerticalLayout scrollArea = new VerticalLayout();
		scrollArea.setMargin(true);
		mainLayout.setContent(scrollArea);

		table = new Table();
		table.setSizeFull();
		scrollArea.addComponent(table);

		table.addContainerProperty("name", String.class, "");
		// table.addContainerProperty("can undo", CheckBox.class, "");
		// table.addContainerProperty("can redo", CheckBox.class, "");

		fillTable();

		table.setItemCaptionPropertyId("name");
	}

	/**
	 * Fill table.
	 */
	@SuppressWarnings("unchecked")
	private void fillTable() {
		table.removeAllItems();

		List<Command> commands = modelingContext.getCommandStack()
				.getAllCommands();
		for (int i = commands.size() - 1; i >= 0; i--) {
			Item item = table.addItem(commands.get(i));
			item.getItemProperty("name").setValue(commands.get(i).getLabel());
		}

		table.select(modelingContext.getCommandStack().getMostRecentCommand());
		table.setValue(modelingContext.getCommandStack().getMostRecentCommand());
	}

	/**
	 * Is required to be called.
	 */
	public void dispose() {
		table = null;
		modelingContext.getCommandStack().removeCommandStackListener(this);
	}

	/* (non-Javadoc)
	 * @see org.eclipse.emf.common.command.CommandStackListener#commandStackChanged(java.util.EventObject)
	 */
	@Override
	public void commandStackChanged(EventObject event) {
		fillTable();
	}

}