/*
    * $Id: HistoryUtilities.java,v 1.12 2007/09/26 12:29:29 edankert Exp $
    *
    * The contents of this file are subject to the Mozilla Public License 
    * Version 1.1 (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.mozilla.org/MPL/ 
    *
    * Software distributed under the License is distributed on an "AS IS" basis, 
   * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
   * for the specific language governing rights and limitations under the License.
   *
   * The Original Code is XML Hammer code. (org.xmlhammer.*)
   *
   * The Initial Developer of the Original Code is Edwin Dankert. Portions created 
   * by the Initial Developer are Copyright (C) 2005 - 2006 the Initial Developer. 
   * All Rights Reserved.
   *
   * Contributor(s): Edwin Dankert <edankert@gmail.com>
   */
  package org.xmlhammer.gui.history;
  
  import java.net.URI;
  import java.util.List;
  
  import org.bounce.util.URIUtils;
  import org.xmlhammer.PreferencesHandler;
  import org.xmlhammer.model.preferences.HistoryList;
  
  public class HistoryUtilities {
      private static HistoryUtilities utils = null;
      private HistoryListModel searches = null;
      private HistoryListModel sources = null;
      private HistoryListModel results = null;
      private HistoryListModel schemas = null;
      private HistoryListModel patterns = null;
      private HistoryListModel expressions = null;
      private HistoryListModel directories = null;
      private HistoryListModel extensions = null;
      private HistoryListModel stylesheets = null;
      private HistoryListModel doctypeSystems = null;
      private HistoryListModel doctypePublics = null;
      private HistoryListModel cdataSectionElements = null;
      private HistoryListModel medias = null;
      private HistoryListModel titles = null;
      private HistoryListModel charsets = null;
  //    private DefaultListModel LookIn = null;
      
      private HistoryUtilities() {
      }
      
      public static HistoryUtilities getInstance() {
          if ( utils == null) {
              utils = new HistoryUtilities();
          }
          
          return utils;
      }
      
      // Add a recently opened project.
      public void addOpenedProject(URI uri) {
          if ( uri != null) {
              add(PreferencesHandler.getInstance().getPreferences().getHistory().getProjects(), URIUtils.toString(uri));
          }
      }
  
      private void add(HistoryList hist, String value) {
          if (value != null && value.length() > 0) {
              List<String> list = hist.getValue();
              
              for (String item : list) {
                  if (item.equals(value)) {
                      list.remove(item);
                      break;
                  }
              }
              
              list.add(0, value);
  
              if (hist.getSize() < list.size()) {
                  // remove the last item!
                  list.remove(list.size()-1);
              }
          }
      }
  
  //    private void add( DefaultListModel model, HistoryList hist, String value) {
  //        if ( value != null && value.length() > 0) {
  //            List<String> list = hist.getValue();
  //            
  //            for ( String item : list) {
  //                if ( item.equals( value)) {
  //                    list.remove( item);
  //                    model.removeElement( value);
  //                    break;
  //                }
  //            }
  //            
  //            if ( hist.getSize() < list.size()) {
 //                // remove the last item!
 //                String last = list.get( list.size()-1);
 //    
 //                model.removeElement(last);
 //                list.remove(last);
 //            }
 //            
 //            list.add( 0, value);
 //            model.add( 0, value);
 //        }
 //    }
 
 //    // Add a recently opened URI.
 //    public void addInput( URI uri) {
 //        if ( uri != null) {
 //            add( (DefaultListModel)getInputsModel(), preferences.getHistory().getInputs(), uri.toString());
 //        }
 //    }
 //
 //    // Add a recently opened URI.
 //    public void addSchema( URI uri) {
 //        if ( uri != null) {
 //            add( (DefaultListModel)getSchemasModel(), preferences.getHistory().getSchemas(), uri.toString());
 //        }
 //    }
 //
 //    public void addDirectory( String uri) {
 //        add( (DefaultListModel)getDirectories(), preferences.getHistory().getDirectories(), uri);
 //    }
 //
 //    // Add a pattern.
 //    public void addPattern( String pattern) {
 //        add( (DefaultListModel)getPatterns(), preferences.getHistory().getPatterns(), pattern);
 //    }
 //
 //    // Add a expression.
 //    public void addExpression( String expression) {
 //        add( (DefaultListModel)getExpressions(), preferences.getHistory().getExpressions(), expression);
 //    }
         
     public HistoryListModel getSearches() {
         if (searches == null) {
             searches = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getSearches());
         }
 
         return searches;
     }
 
     public HistoryListModel getSourcesModel() {
         if ( sources == null) {
             sources = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getSources());
         }
 
         return sources;
     }
 
     public HistoryListModel getResultsModel() {
         if (results == null) {
             results = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getResults());
         }
 
         return results;
     }
 
     public HistoryListModel getSchemasModel() {
         if ( schemas == null) {
             schemas = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getSchemas());
         }
 
         return schemas;
     }
 
     public HistoryListModel getExpressions() {
         if ( expressions == null) {
             expressions = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getExpressions());
         }
 
         return expressions;
     }
 
     public HistoryListModel getPatterns() {
         if ( patterns == null) {
             patterns = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getPatterns());
         }
         
         return patterns;
     }
 
     public HistoryListModel getDirectories() {
         if ( directories == null) {
             directories = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getDirectories());
         }
 
         return directories;
     }
     
     public HistoryListModel getExtensions() {
         if ( extensions == null) {
             extensions = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getExtensions());
         }
 
         return extensions;
     }
 
     public HistoryListModel getStylesheets() {
         if (stylesheets == null) {
             stylesheets = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getStylesheets());
         }
 
         return stylesheets;
     }
 
     public HistoryListModel getDoctypeSystems() {
         if (doctypeSystems == null) {
             doctypeSystems = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getDoctypeSystems());
         }
 
         return doctypeSystems;
     }
 
     public HistoryListModel getDoctypePublics() {
         if (doctypePublics == null) {
             doctypePublics = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getDoctypePublics());
         }
 
         return doctypePublics;
     }
 
     public HistoryListModel getCDataSectionElements() {
         if (cdataSectionElements == null) {
             cdataSectionElements = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getCdataSectionElements());
         }
 
         return cdataSectionElements;
     }
 
     public HistoryListModel getMedias() {
         if (medias == null) {
             medias = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getMedias());
         }
 
         return medias;
     }
 
     public HistoryListModel getTitles() {
         if (titles == null) {
             titles = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getTitles());
         }
 
         return titles;
     }
 
     public HistoryListModel getCharsets() {
         if (charsets == null) {
             charsets = createModel(PreferencesHandler.getInstance().getPreferences().getHistory().getCharsets());
         }
 
         return charsets;
     }
 
     private HistoryListModel createModel( HistoryList hist) {
         return new HistoryListModel( hist);
     }
  }