/*

  *  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 org.apache.myfaces.shared_impl.taglib;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import javax.el.MethodExpression;

 import javax.el.ValueExpression;

 import javax.faces.component.UIComponent;

 import javax.faces.webapp.UIComponentELTag;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.tagext.BodyContent;

 import java.io.IOException;

 import java.io.Reader;

 /**

  * @author Manfred Geiler (latest modification by $Author: skitching $)

  * @version $Revision: 673827 $ $Date: 2008-07-03 16:46:23 -0500 (Thu, 03 Jul 2008) $

  */

 public abstract class UIComponentBodyELTagBase extends UIComponentELTag

 {

     private static final Log log = LogFactory.getLog(UIComponentBodyTagBase.class);

     public int doEndTag() throws JspException

     {

         if (log.isWarnEnabled())

         {

             UIComponent component = getComponentInstance();

             if (component != null &&

                 component.getRendersChildren() &&

                 !isBodyContentEmpty())

             {

                 log.warn("Component with id '" + component.getClientId(getFacesContext()) +

                          "' (" + getClass().getName() +

                          " tag) and path : "+org.apache.myfaces.shared_impl.renderkit.RendererUtils.getPathToComponent(component)+"renders it's children, but has embedded JSP or HTML code. Use the <f:verbatim> tag for nested HTML. For comments use <%/* */%> style JSP comments instead of <!-- --> style HTML comments." +

                          "\n BodyContent:\n" + getBodyContent().getString().trim());

             }

         }

         return super.doEndTag();

     }

     /**

      * TODO: Ignore <!-- --> comments

      */

     private boolean isBodyContentEmpty()

     {

         BodyContent bodyContent = getBodyContent();

         if (bodyContent == null)

         {

             return true;

         }

         try

         {

             Reader reader = bodyContent.getReader();

             int c;

             while ((c = reader.read()) != -1)

             {

                 if (!Character.isWhitespace((char)c))

                 {

                     return false;

                 }

             }

             return true;

         }

         catch (IOException e)

         {

             log.error("Error inspecting BodyContent", e);

             return false;

         }

     }

     //-------- rest is identical to UIComponentTagBase ------------------

     //UIComponent attributes

     private ValueExpression _forceId;

     private ValueExpression _forceIdIndex;

     private static final Boolean DEFAULT_FORCE_ID_INDEX_VALUE = Boolean.TRUE;

     //Special UIComponent attributes (ValueHolder, ConvertibleValueHolder)

     private ValueExpression _value;

     private ValueExpression _converter;

     //attributes id, rendered and binding are handled by UIComponentTag

     protected void setProperties(UIComponent component)

     {

         super.setProperties(component);

         setBooleanProperty(component, org.apache.myfaces.shared_impl.renderkit.JSFAttr.FORCE_ID_ATTR, _forceId);

         setBooleanProperty(component, org.apache.myfaces.shared_impl.renderkit.JSFAttr.FORCE_ID_INDEX_ATTR, _forceIdIndex, DEFAULT_FORCE_ID_INDEX_VALUE);

         //rendererType already handled by UIComponentTag

         setValueProperty(component, _value);

         setConverterProperty(component, _converter);

     }

     /**

      * Sets the forceId attribute of the tag.  NOTE: Not every tag that extends this class will

      * actually make use of this attribute.  Check the TLD to see which components actually

      * implement it.

      *

      * @param aForceId The value of the forceId attribute.

      */

     public void setForceId(ValueExpression aForceId)

     {

         _forceId = aForceId;

     }

     /**

      * Sets the forceIdIndex attribute of the tag.  NOTE: Not every tag that extends this class will

      * actually make use of this attribute.  Check the TLD to see which components actually implement it.

      *

      * @param aForceIdIndex The value of the forceIdIndex attribute.

      */

     public void setForceIdIndex(ValueExpression aForceIdIndex)

     {

         _forceIdIndex = aForceIdIndex;

     }

     public void setValue(ValueExpression value)

     {

         _value = value;

     }

     public void setConverter(ValueExpression converter)

     {

         _converter = converter;

     }

     // sub class helpers

     protected void setIntegerProperty(UIComponent component, String propName, ValueExpression value)

     {

         UIComponentELTagUtils.setIntegerProperty(component, propName, value);

     }

     @Deprecated

     protected void setIntegerProperty(UIComponent component, String propName, String value)

     {

         UIComponentTagUtils.setIntegerProperty(getFacesContext(), component, propName, value);

     }

     protected void setStringProperty(UIComponent component, String propName, ValueExpression value)

     {

         UIComponentELTagUtils.setStringProperty(component, propName, value);

     }

     @Deprecated

     protected void setStringProperty(UIComponent component, String propName, String value)

     {

         UIComponentTagUtils.setStringProperty(getFacesContext(), component, propName, value);

     }

     protected void setBooleanProperty(UIComponent component, String propName, ValueExpression value)

     {

         UIComponentELTagUtils.setBooleanProperty(component, propName, value);

     }

     protected void setBooleanProperty(UIComponent component, String propName, ValueExpression value, Boolean defaultValue)

     {

         UIComponentELTagUtils.setBooleanProperty(component, propName, value, defaultValue);

     }

     @Deprecated

     protected void setBooleanProperty(UIComponent component, String propName, String value)

     {

         UIComponentTagUtils.setBooleanProperty(getFacesContext(), component, propName, value);

     }

     private void setValueProperty(UIComponent component, ValueExpression value)

     {

         UIComponentELTagUtils.setValueProperty(getFacesContext(), component, value);

     }

     @Deprecated

     protected void setValueProperty(UIComponent component, String value)

     {

         UIComponentTagUtils.setValueProperty(getFacesContext(), component, value);

     }

     private void setConverterProperty(UIComponent component, ValueExpression value)

     {

         UIComponentELTagUtils.setConverterProperty(getFacesContext(), component, value);

     }

     @Deprecated

     private void setConverterProperty(UIComponent component, String value)

     {

         UIComponentTagUtils.setConverterProperty(getFacesContext(), component, value);

     }

     protected void addValidatorProperty(UIComponent component, MethodExpression value)

     {

         UIComponentELTagUtils.addValidatorProperty(getFacesContext(), component, value);

     }

     @Deprecated

     protected void setValidatorProperty(UIComponent component, String value)

     {

         UIComponentTagUtils.setValidatorProperty(getFacesContext(), component, value);

     }

     protected void setActionProperty(UIComponent component, MethodExpression action)

     {

         UIComponentELTagUtils.setActionProperty(getFacesContext(), component, action);

     }

     @Deprecated

     protected void setActionProperty(UIComponent component, String action)

     {

         UIComponentTagUtils.setActionProperty(getFacesContext(), component, action);

     }

     protected void setActionListenerProperty(UIComponent component, MethodExpression actionListener)

     {

         UIComponentELTagUtils.addActionListenerProperty(getFacesContext(), component, actionListener);

     }

     @Deprecated

     protected void setActionListenerProperty(UIComponent component, String actionListener)

     {

         UIComponentTagUtils.setActionListenerProperty(getFacesContext(), component, actionListener);

     }

     protected void addValueChangedListenerProperty(UIComponent component, MethodExpression valueChangedListener)

     {

         UIComponentELTagUtils.addValueChangedListenerProperty(getFacesContext(), component, valueChangedListener);

     }

     @Deprecated

     protected void setValueChangedListenerProperty(UIComponent component, String valueChangedListener)

     {

         UIComponentTagUtils.setValueChangedListenerProperty(getFacesContext(), component, valueChangedListener);

     }

     protected void setValueBinding(UIComponent component,

             String propName,

             ValueExpression value)

     {

         UIComponentELTagUtils.setValueBinding(getFacesContext(), component, propName, value);

     }

 }