/*

  * 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.view.facelets.compiler;

 import java.io.IOException;

 import java.io.Writer;

 import javax.el.ELException;

 import javax.faces.FacesException;

 import javax.faces.component.UIComponent;

 import javax.faces.component.UniqueIdVendor;

 import javax.faces.view.facelets.FaceletContext;

 import javax.faces.view.facelets.FaceletException;

 import org.apache.myfaces.view.facelets.FaceletCompositionContext;

 import org.apache.myfaces.view.facelets.el.ELText;

 import org.apache.myfaces.view.facelets.tag.jsf.ComponentSupport;

 import org.apache.myfaces.view.facelets.util.FastWriter;

 /**

  * @author Jacob Hookom

  * @version $Id: UITextHandler.java 1194849 2011-10-29 09:28:45Z struberg $

  */

 final class UITextHandler extends AbstractUIHandler

 {

     private final ELText txt;

     private final String alias;

     private final int length;

     public UITextHandler(String alias, ELText txt)

     {

         this.alias = alias;

         this.txt = txt;

         this.length = txt.toString().length();

     }

     public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, FaceletException,

             ELException

     {

         if (parent != null)

         {

             try

             {

                 ELText nt = this.txt.apply(ctx.getExpressionFactory(), ctx);

                 UIComponent c = new UIText(this.alias, nt);

                 UniqueIdVendor uniqueIdVendor

                         = FaceletCompositionContext.getCurrentInstance(ctx).getUniqueIdVendorFromStack();

                 if (uniqueIdVendor == null)

                 {

                     uniqueIdVendor = ComponentSupport.getViewRoot(ctx, parent);

                 }

                 if (uniqueIdVendor != null)

                 {

                     // UIViewRoot implements UniqueIdVendor, so there is no need to cast to UIViewRoot

                     // and call createUniqueId()

                     String uid = uniqueIdVendor.createUniqueId(ctx.getFacesContext(), null);

                     c.setId(uid);

                 }

                 this.addComponent(ctx, parent, c);

             }

             catch (Exception e)

             {

                 throw new ELException(this.alias + ": " + e.getMessage(), e.getCause());

             }

         }

     }

     public String toString()

     {

         return this.txt.toString();

     }

     public String getText()

     {

         return this.txt.toString();

     }

     public String getText(FaceletContext ctx)

     {

         Writer writer = new FastWriter(this.length);

         try

         {

             this.txt.apply(ctx.getExpressionFactory(), ctx).write(writer, ctx);

         }

         catch (IOException e)

         {

             throw new ELException(this.alias + ": " + e.getMessage(), e.getCause());

         }

         return writer.toString();

     }

 }