/**
 * This file Copyright (c) 2003-2012 Magnolia International
 * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
 *
 *
 * This file is dual-licensed under both the Magnolia
 * Network Agreement and the GNU General Public License.
 * You may elect to use one or the other of these licenses.
 *
 * This file is distributed in the hope that it will be
 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
 * Redistribution, except as permitted by whichever of the GPL
 * or MNA you select, is prohibited.
 *
 * 1. For the GPL license (GPL), you can redistribute and/or
 * modify this file under the terms of the GNU General
 * Public License, Version 3, as published by the Free Software
 * Foundation.  You should have received a copy of the GNU
 * General Public License, Version 3 along with this program;
 * if not, write to the Free Software Foundation, Inc., 51
 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 2. For the Magnolia Network Agreement (MNA), this file
 * and the accompanying materials are made available under the
 * terms of the MNA which accompanies this distribution, and
 * is available at http://www.magnolia-cms.com/mna.html
 *
 * Any modifications to this file must keep this entire header
 * intact.
 *
 */
package info.magnolia.cms.util;

import info.magnolia.cms.core.Content;
import info.magnolia.cms.core.ItemType;
import info.magnolia.cms.core.Content.ContentFilter;

/**
 * A {@link ContentFilter} filtering on node types.
 */
public class NodeTypeFilter implements ContentFilter {

    private String systemName;

    public NodeTypeFilter(String typeName) {
        this.systemName = typeName;
    }

    public NodeTypeFilter(ItemType type) {
        this.systemName = type.getSystemName();
    }

    @Override
    public boolean accept(Content content) {
        return content.isNodeType(systemName);
    }

    @Override
    public String toString() {
        return "NodeTypeFilter for type " + systemName;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }

        if (obj == null || !(obj instanceof NodeTypeFilter)) {
            return false;
        }

        NodeTypeFilter that = (NodeTypeFilter) obj;
        return this.systemName == null ? that.systemName == null : this.systemName.equals(that.systemName);
    }

    @Override
    public int hashCode() {
        // any prime's good default
        return this.systemName == null ? 23 : this.systemName.hashCode();
    }
}