/*******************************************************************************
 * Copyright (c) 2010-2015 Henshin developers. 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:
 *     TU Berlin, University of Luxembourg, SES S.A.
 *******************************************************************************/
package de.tub.tfs.henshin.tggeditor.commands.create;

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

import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.henshin.model.Attribute;
import org.eclipse.emf.henshin.model.NestedCondition;
import org.eclipse.emf.henshin.model.Node;
import org.eclipse.emf.henshin.model.Rule;
import org.eclipse.gef.commands.Command;

import de.tub.tfs.henshin.tgg.TAttribute;
import de.tub.tfs.henshin.tgg.TGG;
import de.tub.tfs.henshin.tgg.TggFactory;
import de.tub.tfs.henshin.tgg.interpreter.util.RuleUtil;
import de.tub.tfs.henshin.tggeditor.util.GraphicalNodeUtil;


public class CreateAttributeCommand extends Command {
	/** The node. */
	protected Node node;
	
	/** The attribute. */
	protected Attribute attribute;
	
	/** The value. */
	protected String value;
	
	/** The type. */
	protected EAttribute type;


	/** The layout system */
	protected TGG layout;
	
	//NEW
	
	public Attribute getAttribute(){
		return attribute;
	}

	
	public CreateAttributeCommand (Node node, String value) {
		this.node = node;
		this.value = value;
		this.attribute = TggFactory.eINSTANCE.createTAttribute();
		this.layout = GraphicalNodeUtil.getLayoutSystem(node);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.commands.Command#canExecute()
	 */
	@Override
	public boolean canExecute() {
		if(node == null)
			return false;
		if(RuleUtil.graphIsOpRuleRHS(node.getGraph()))
			return false;
		return true;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.commands.Command#execute()
	 */
	@Override
	public void execute() {
		if (canExecute()) {
			attribute.setValue(value);
			attribute.setType(type);
			attribute.setNode(node);
			//NEW GERARD
			if (attribute instanceof TAttribute){
				//((TAttribute)attribute).setMarkerType(RuleUtil.NEW_Graph);
			}
			node.getAttributes().add(attribute);
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.commands.Command#undo()
	 */
	@Override
	public void undo() {
		node.getAttributes().remove(attribute);
	}

	/**
	 * Gets the node.
	 *
	 * @return the node
	 */
	public Node getNode() {
		return node;
	}
	
	public void setAttributeType(EAttribute attributeType) {
		this.type = attributeType;
	}
	
	public void setValue(String value) {
		this.value = value;
	}
}