/*
    * 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.tobago.internal.taglib.extension;
  
  import javax.el.ValueExpression;
  import javax.servlet.jsp.JspFactory;
  import javax.servlet.jsp.tagext.BodyTagSupport;
  import javax.servlet.jsp.tagext.JspIdConsumer;
  
  public class TobagoExtensionBodyTagSupport extends BodyTagSupport implements JspIdConsumer {
  
    protected static final String PREFIX = "tx";
    
    private String jspId;
    private int idSuffix;
      
    protected ValueExpression createStringValueExpression(String expression) {
      return JspFactory.getDefaultFactory().getJspApplicationContext(pageContext.getServletContext())
          .getExpressionFactory().createValueExpression(pageContext.getELContext(), expression, String.class);
    }
    
    public void setJspId(String jspId) {
      this.jspId = jspId;
    }
  
    protected String nextJspId() {
      return jspId + PREFIX + idSuffix++;
    }
  
    public void release() {
      super.release();
      jspId = null;
      idSuffix = 0;
    }
  }