/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2011 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.gui.flow;

import java.util.LinkedList;
import java.util.List;

import javax.swing.Icon;

import com.rapidminer.Process;
import com.rapidminer.gui.tools.ParentButtonModel;
import com.rapidminer.operator.ExecutionUnit;
import com.rapidminer.operator.Operator;
import com.rapidminer.operator.OperatorChain;

/**
 * 
 * @author Simon Fischer
 */
public class ProcessParentButtonModel implements ParentButtonModel<Operator> {

	private Process process;
	
	public ProcessParentButtonModel(Process process) {		
		this.process = process;
	}

	private List<Operator> getChildren(OperatorChain chain) {
		List<Operator> children = new LinkedList<Operator>();
		for (ExecutionUnit executionUnit : chain.getSubprocesses()) {
			children.addAll(executionUnit.getOperators());
		}
		return children;
	}

	@Override
	public Operator getChild(Operator node, int index) {
		if (node instanceof OperatorChain) {
			return getChildren((OperatorChain)node).get(index);
		} else {
			return null;
		}
	}

	@Override
	public int getNumberOfChildren(Operator node) {
		if (node instanceof OperatorChain) {
			return getChildren((OperatorChain)node).size();
		} else {
			return 0;
		}
	}

	@Override
	public Operator getParent(Operator child) {
		return child.getParent();
	}

	@Override
	public Operator getRoot() {
		if (process != null) {
			return process.getRootOperator();
		} else {
			return null;
		}
	}

	@Override
	public String toString(Operator node) {
		return node.getName();
	}

	public void setProcess(Process process) {
		this.process = process;		
	}

	@Override
	public Icon getIcon(Operator node) {
		return node.getOperatorDescription().getSmallIcon();
	}
}