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Internet2 Groups Management User Interface
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/*******************************************************************************
 * Copyright 2012 Internet2
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
/*
Copyright 2004-2005 University Corporation for Advanced Internet Development, Inc.
Copyright 2004-2005 The University Of Bristol

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package edu.internet2.middleware.grouper.ui.util;

import java.util.*;

/**
 * Convenience class to allow a ResourceBundle to be acessed as a Map - used in
 * JSTL. If a key starts with '*' the '*' is discarded, however, if no value is
 * found and empty String is returned rather than ???key???
 * 
 * 
 * @author Gary Brown.
 * @version $Id: MapBundleWrapper.java,v 1.4 2008-03-31 20:04:34 mchyzer Exp $
 */

public class MapBundleWrapper extends HashMap {

  /** bundle */
	private ResourceBundle bundle;

	/** if we should not do the question mark thing if not found */
	private boolean returnNullsIfNotFound = false;
	
	/**
	 * @param bundle1
	 *            to wrap
	 * @param theReturnNullsIfNotFound if dont do question marks if not found
	 */
	public MapBundleWrapper(ResourceBundle bundle1, boolean theReturnNullsIfNotFound) {
		if (bundle1 == null)
			throw new NullPointerException();
		this.bundle = bundle1;
		this.returnNullsIfNotFound = theReturnNullsIfNotFound;
	}

	/**
	 * (non-Javadoc)
	 * 
	 * @see java.util.Map#get(java.lang.Object)
	 */
	@Override
	public Object get(Object key) {
		boolean isSilent=false;
		if (key instanceof String) {
		} else
			throw new IllegalArgumentException("Strings only as keys");
		try {
			String keyStr = (String)key;
			if(keyStr.startsWith("*")) {
				isSilent=true;
				keyStr = keyStr.substring(1);
			}
			Object returnObj = this.bundle.getObject(keyStr);
			return returnObj;
		} catch (MissingResourceException e) {
			if(isSilent) return "";

		}
		return this.returnNullsIfNotFound ? null : "???" + key + "???";
	}
}