/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you 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 javax.faces.webapp;

 import javax.el.ValueExpression;

 import javax.faces.application.Application;

 import javax.faces.component.UIComponent;

 import javax.faces.context.FacesContext;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.tagext.Tag;

 /**

  * Base class for all JSP tags that represent a JSF UIComponent.

  * <p>

  * <i>Disclaimer</i>: The official definition for the behaviour of

  * this class is the JSF specification but for legal reasons the

  * specification cannot be replicated here. Any javadoc present on this

  * class therefore describes the current implementation rather than the

  * officially required behaviour, though it is believed that this class

  * does comply with the specification.

  *

  * see Javadoc of <a href="http://java.sun.com/j2ee/javaserverfaces/1.2/docs/api/index.html">JSF Specification</a> for more.

  *

  * @author Bruno Aranda (latest modification by $Author: skitching $)

  * @author Manfred Geiler

  * @version $Revision: 676298 $ $Date: 2008-07-13 05:31:48 -0500 (Sun, 13 Jul 2008) $

  *

  * @since 1.2

  */

 public abstract class UIComponentELTag extends UIComponentClassicTagBase

         implements Tag

 {

     private ValueExpression _binding = null;

     private ValueExpression _rendered = null;

     public UIComponentELTag()

     {

     }

     public void release()

     {

         super.release();

         _binding = null;

         _rendered = null;

     }

     protected void setProperties(UIComponent component)

     {

         if (getRendererType() != null)

         {

             component.setRendererType(getRendererType());

         }

         if (_rendered != null)

         {

             if (_rendered.isLiteralText())

             {

                 boolean b = Boolean.valueOf(_rendered.getExpressionString()).booleanValue();

                 component.setRendered(b);

             }

             else

             {

                 component.setValueExpression("rendered", _rendered);

             }

         }

     }

     protected UIComponent createComponent(FacesContext context, String newId) throws JspException

     {

         UIComponent component;

         Application application = context.getApplication();

         if (_binding != null)

         {

             component = application.createComponent(_binding, context, getComponentType());

             component.setValueExpression("binding", _binding);

         }

         else

         {

             component = application.createComponent(getComponentType());

         }

         component.setId(newId);

         setProperties(component);

         return component;

     }

     public void setBinding(ValueExpression binding) throws JspException

     {

         _binding = binding;

     }

     protected boolean hasBinding()

     {

         return _binding != null;

     }

     public void setRendered(ValueExpression rendered)

     {

         _rendered = rendered;

     }

 }