/**
 *
 * Copyright
 * 2009-2015 Jayway Products AB
 * 2016-2017 Föreningen Sambruk
 *
 * Licensed under AGPL, Version 3.0 (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.gnu.org/licenses/agpl.txt
 *
 * 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 se.streamsource.streamflow.client.util;

import se.streamsource.dci.value.link.LinkValue;
import se.streamsource.dci.value.link.TitledLinkValue;

import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.BadLocationException;
import java.awt.*;
import java.util.StringTokenizer;

/**
 * List renderer for lists that use LinkValue as items.
 */
public class FilterLinkListCellRenderer extends DefaultListCellRenderer
      implements DocumentListener
{
   private String filterText = "";

   public Component getListCellRendererComponent( JList list, Object value, int index, boolean isSelected, boolean cellHasFocus )
   {
      if (value instanceof LinkValue)
      {
         LinkValue itemValue = (LinkValue) value;
         String val = itemValue == null ? "" : itemValue.text().get();

         if (value instanceof TitledLinkValue)
         {
            if (((TitledLinkValue) value).classes().get() != null)
            {
               String classes = ((TitledLinkValue) value).classes().get().trim();
               StringTokenizer tokenizer = new StringTokenizer( classes, " " );
               String matchedClasses = "";
               while (tokenizer.hasMoreElements())
               {
                  String token = (String) tokenizer.nextElement();
                  if (token.toLowerCase().contains( filterText.toLowerCase() ))
                  {
                     matchedClasses += token + " ";
                  }
               }

               if (matchedClasses.trim().equals( "" ))
                  val = "<html>  " + val + "</html>";
               else
                  val = "<html>  " + val + " [" + matchedClasses.trim()  + "]</html>";
            } else
               val = "<html>   " +  val + "</html>";
         }

         return super.getListCellRendererComponent( list, val, index, isSelected, cellHasFocus );
      } else return super.getListCellRendererComponent( list, value, index, isSelected, cellHasFocus );
   }

   public void insertUpdate( DocumentEvent e )
   {
      try
      {
         String oldValue = filterText;
         filterText = e.getDocument().getText( 0, e.getDocument().getLength() );
         this.firePropertyChange( "text", oldValue, filterText );
      } catch (BadLocationException e1)
      {
         e1.printStackTrace();
      }
   }

   public void removeUpdate( DocumentEvent e )
   {
      try
      {
         String oldValue = filterText;
         filterText = e.getDocument().getText( 0, e.getDocument().getLength() );
         this.firePropertyChange( "text", oldValue, filterText );
      } catch (BadLocationException e1)
      {
         e1.printStackTrace();
      }
   }

   public void changedUpdate( DocumentEvent e )
   {
   }
}