/*
    * 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.component.html.ext;
  
  import javax.faces.component.UINamingContainer;
  import javax.faces.component.UIPanel;
  import javax.faces.context.FacesContext;
  
  import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFComponent;
  import org.apache.myfaces.component.NewspaperTable;
  
  /**
   * This component is used to render one row in a t:dataTable, when
   * ajaxRowRender="true" is set.
   * 
   * @author Leonardo Uribe
   */
  @JSFComponent
  public class HtmlTableRow extends UIPanel
  {
      public static final String COMPONENT_FAMILY = "org.apache.myfaces.HtmlTableRow"; 
      public static final String COMPONENT_TYPE = "org.apache.myfaces.HtmlTableRow";
      public static final String DEFAULT_RENDERER_TYPE = "org.apache.myfaces.HtmlTableRow";
  
      private String _alternateClientId;
      
      public HtmlTableRow()
      {
          setRendererType(DEFAULT_RENDERER_TYPE);
      }
      
      @Override
      public String getClientId(FacesContext context)
      {
          String inheritedClientId = super.getClientId(context);
          if (getParent() instanceof HtmlDataTable)
          {
              HtmlDataTable dataTable = (HtmlDataTable) getParent();
              if (dataTable.getNewspaperColumns() > 1)
              {
                  if (_alternateClientId == null)
                  {
                      char separator = UINamingContainer.getSeparatorChar(context); 
                      _alternateClientId = dataTable.getClientId() + separator + 
                                           getNewspaperRowIndex(dataTable) + separator + getId(); 
                      return _alternateClientId;
                  }
                  else
                  {
                      return _alternateClientId;
                  }
              }
              else
              {
                  return inheritedClientId;
              }
          }
          else
          {
              return inheritedClientId;
          }
      }
      
      public int getNewspaperRowIndex(HtmlDataTable dataTable)
      {
          int rowCount = dataTable.getRowCount();
          
          int first = dataTable.getFirst();
          int rows = dataTable.getRows();
          int last;
  
          if (rows <= 0)
          {
             last = rowCount;
          }
          else
          {
             last = first + rows;
             if (last > rowCount)
             {
                 last = rowCount;
             }
          }
 
         int newspaperColumns = dataTable.getNewspaperColumns();
         int newspaperRows;
         if((last - first) % newspaperColumns == 0)
             newspaperRows = (last - first) / newspaperColumns;
         else newspaperRows = ((last - first) / newspaperColumns) + 1;
 
         int currentRow = dataTable.getRowIndex();
         int nr = NewspaperTable.NEWSPAPER_HORIZONTAL_ORIENTATION.equals(dataTable.getNewspaperOrientation()) ? 
                 (currentRow-first)/newspaperColumns :
                 (currentRow-first) % newspaperRows;
         
         return nr;
     }
     
     @Override
     public void setId(String id)
     {
         super.setId(id);
         _alternateClientId = null;
     }
 
     public String getFamily()
     {
         return COMPONENT_FAMILY;
     }
 }