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Ajax4jsf is an open source extension to the JavaServer Faces standard that adds AJAX capability to JSF applications without requiring the writing of any JavaScript.
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/**
 * Licensed under the Common Development and Distribution License,
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.sun.com/cddl/
 *   
 * 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.ajax4jsf.framework.skin;

import java.nio.ByteBuffer;
import java.util.AbstractMap;
import java.util.Collections;
import java.util.Set;

import javax.faces.context.FacesContext;

/**
 * @author shura (latest modification by $Author: alexsmirnov $)
 * @version $Revision: 1.5 $ $Date: 2006/09/18 17:17:22 $
 *
 */
public class SkinBean extends AbstractMap implements Skin {

	/* (non-Javadoc)
	 * @see org.ajax4jsf.framework.skin.Skin#hashCode(javax.faces.context.FacesContext)
	 */
	public int hashCode(FacesContext context) {
		// TODO Auto-generated method stub
		return getSkin().hashCode(context);
	}
	
	
	

	/* (non-Javadoc)
	 * @see java.util.AbstractMap#entrySet()
	 */
	public Set entrySet() {
		// TODO Auto-generated method stub
		return Collections.EMPTY_SET;
	}

	/* (non-Javadoc)
	 * @see java.util.AbstractMap#containsKey(java.lang.Object)
	 */
	public boolean containsKey(Object key) {
		if(null == key) {
			return false;
		}
		return getSkin().containsProperty(key.toString());
	}

	/* (non-Javadoc)
	 * @see java.util.AbstractMap#get(java.lang.Object)
	 */
	public Object get(Object key) {
		if(null == key) {
			return null;
		}
		return getSkin().getParameter(FacesContext.getCurrentInstance(),key.toString());
	}

	private Skin getSkin() {
		FacesContext context = FacesContext.getCurrentInstance();
		return SkinFactory.getInstance().getSkin(context);
	}

	/* (non-Javadoc)
	 * @see java.util.AbstractMap#toString()
	 */
	public String toString() {
		return getSkin().toString();
	}

	/* (non-Javadoc)
	 * @see java.util.AbstractMap#isEmpty()
	 */
	public boolean isEmpty() {
		// TODO Auto-generated method stub
		return false;
	}

	/* (non-Javadoc)
	 * @see org.ajax4jsf.framework.skin.Skin#getRenderKitId(javax.faces.context.FacesContext)
	 */
	public String getRenderKitId(FacesContext context) {
		return getSkin().getRenderKitId(context);
	}

	/* (non-Javadoc)
	 * @see org.ajax4jsf.framework.skin.Skin#getParameter(javax.faces.context.FacesContext, java.lang.String)
	 */
	public Object getParameter(FacesContext context, String name) {
		return getSkin().getParameter(context,name);
	}

	
	public Object getParameter(FacesContext context, String name, Object defaultValue) {
		
		return getSkin().getParameter(context, name, defaultValue);
	}




	/* (non-Javadoc)
	 * @see org.ajax4jsf.framework.skin.Skin#containsProperty(java.lang.String)
	 */
	public boolean containsProperty(String name) {
		return getSkin().containsProperty(name);
	}
	
	/* Static methods for manipulate skins */
	
	public static Object skinHashCode(){
		FacesContext context = FacesContext.getCurrentInstance();
		int hashCode = SkinFactory.getInstance().getSkin(context).hashCode(context);
		byte[] bs = ByteBuffer.allocate(4).putInt(hashCode).array();
		return bs;
	}
	
}