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Bridges Apache Wicket with Select2 components

There is a newer version: 10.1.1

/*
 * Copyright 2012 Igor Vaynberg
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with
 * the License. You may obtain a copy of the License in the LICENSE file, or 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 org.wicketstuff.select2.json;

import org.apache.wicket.ajax.json.JSONFunction;
import com.github.openjson.JSONException;
import com.github.openjson.JSONStringer;

/**
 * Json utilities
 */
public class Json
{
	private Json()
	{
	}

	/**
	 * Writes a key/value pair into the {@code writer} if the value is not {@code null}
	 * 
	 * @param stringer
	 *            json writer
	 * @param key
	 *            key
	 * @param value
	 *            value
	 * @throws JSONException
	 */
	public static void writeObject(JSONStringer stringer, String key, Object value)
		throws JSONException
	{
		if (value != null)
		{
			stringer.key(key);
			stringer.value(value);
		}
	}

	/**
	 * Writes a key/value pair into the {@code writer} where {@code value} represents a javascript
	 * function and should be written out unencoded if the value is not {@code null}
	 * 
	 * @param stringer
	 *            json writer
	 * @param key
	 *            key
	 * @param value
	 *            value
	 * @throws JSONException
	 */
	public static void writeFunction(JSONStringer stringer, String key, String value)
		throws JSONException
	{
		if (value != null)
		{
			stringer.key(key).value(new JSONFunction(value));
		}
	}

}