/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.cmis.mapping;

import org.alfresco.cmis.CMISAllowedActionEnum;
import org.alfresco.model.ContentModel;
import org.alfresco.service.ServiceRegistry;
import org.alfresco.service.cmr.lock.LockService;
import org.alfresco.service.cmr.lock.LockType;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.service.cmr.security.PermissionService;

/**
 * Alfresco Permission based Action Evaluator
 * 
 * @author davidc
 */
public class CanCheckOutActionEvaluator extends AbstractActionEvaluator<NodeRef>
{
    private PermissionActionEvaluator permissionEvaluator;
    private NodeService nodeService;
    private LockService lockService;

    /**
     * Construct
     * 
     * @param serviceRegistry
     * @param permission
     */
    protected CanCheckOutActionEvaluator(ServiceRegistry serviceRegistry)
    {
        super(serviceRegistry, CMISAllowedActionEnum.CAN_CHECKOUT);
        permissionEvaluator = new PermissionActionEvaluator(serviceRegistry, CMISAllowedActionEnum.CAN_CHECKOUT, PermissionService.CHECK_OUT);
        nodeService = serviceRegistry.getNodeService();
        lockService = serviceRegistry.getLockService();
    }

    /*
     * (non-Javadoc)
     * @see org.alfresco.cmis.CMISActionEvaluator#isAllowed(org.alfresco.service.cmr.repository.NodeRef)
     */
    public boolean isAllowed(NodeRef nodeRef)
    {
        if (nodeService.hasAspect(nodeRef, ContentModel.ASPECT_WORKING_COPY) ||
                lockService.getLockType(nodeRef) == LockType.READ_ONLY_LOCK)
        {
            return false;
        }
        return permissionEvaluator.isAllowed(nodeRef);
    }
    
}