/*
 *  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.repository;

import java.util.List;

import com.rapidminer.repository.gui.actions.AbstractRepositoryAction;

/**
 * Declares a condition for {@link AbstractRepositoryAction}. If the entry is a configurable repository, the action is shown, otherwise it will not be shown.
 *
 * @author Marco Boeck
 * 
 */
public class RepositoryActionConditionImplConfigRepository implements RepositoryActionCondition {
	
	
	/**
	 * Creates a new RepositoryActionCondition which can be used to check if the selected {@link Entry}s are of the type {@link Repository} and are configurable.
	 */
	public RepositoryActionConditionImplConfigRepository() {
		
	}

	@Override
	public boolean evaluateCondition(List<Entry> entryList) {
		if (entryList == null) {
			return false;
		}
		
		for (Entry givenEntry : entryList) {
			
			// make sure each entry's type is a repository, if not condition evaluates to false
			if (!(givenEntry instanceof Repository)) {
				return false;
			}
			// we know it's a repository by now, so check if it's configurable
			Repository repo = (Repository)givenEntry;
			if (!repo.isConfigurable()) {
				return false;
			}
		}
		
		// all conditions have been met, so return true
		return true;
	}
	
}