/*
    * 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.pss.acid.managed;
  
  import java.util.Random;
  import javax.faces.bean.ManagedBean;
  import javax.faces.bean.RequestScoped;
  import javax.faces.component.UIOutput;
  import javax.faces.component.UIPanel;
  import javax.faces.component.html.HtmlPanelGroup;
  
  /**
   *
   */
  @ManagedBean(name="componentBindingFormBean")
  @RequestScoped
  public class ComponentBindingFormBean
  {
      private boolean rebuildDone = false;
      
      private UIPanel panel;
      
      public UIPanel getPanel()
      {
          if (!rebuildDone)
          {
              rebuildForm();
          }
          return panel;
      }
      
      public void rebuildForm()
      {
          if (panel == null)
          {
              panel = new HtmlPanelGroup();
              //panel.setTransient(true);
              panel.setId("formRoot");            
          }
          
           // Clear the existing tree. 
          panel.getChildren().clear();
              
          // Start building the new component tree with formRoot as parent.
          Random random = new Random() ;
          int n = random.nextInt(9)+1;
  
          for(int i = 0; i < n; i++)
          {
              UIOutput input = new UIOutput();
              input.setId("input_"+i);
              panel.getChildren().add(input);
          }
          
          this.rebuildDone = true;
      }
      
      public void forceRebuild()
      {
          rebuildForm();
      }
      
      public void setPanel(UIPanel panel)
      {
          this.panel = panel;
      }
  }