/*
    *  XNap - A P2P framework and client.
    *
    *  See the file AUTHORS for copyright information.
    *
    *  This program is free software; you can redistribute it and/or modify
    *  it under the terms of the GNU General Public License as published by
    *  the Free Software Foundation.
    *
   *  This program is distributed in the hope that it will be useful,
   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *  GNU General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *  along with this program; if not, write to the Free Software
   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.xnap.gui;
  
  import java.awt.BorderLayout;
  import java.awt.Dimension;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.util.HashSet;
  
  import javax.swing.Action;
  import javax.swing.BorderFactory;
  import javax.swing.Box;
  import javax.swing.BoxLayout;
  import javax.swing.DefaultComboBoxModel;
  import javax.swing.JComboBox;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JScrollPane;
  import javax.swing.JTable;
  import javax.swing.ListSelectionModel;
  import javax.swing.border.EmptyBorder;
  
  import org.xnap.XNap;
  import org.xnap.gui.component.XNapMenuItem;
  import org.xnap.gui.event.PopupListener;
  import org.xnap.gui.event.SwingListListener;
  import org.xnap.gui.menu.AbstractDynamicMenu;
  import org.xnap.gui.table.HotlistTableModel;
  import org.xnap.gui.util.*;
  import org.xnap.gui.util.SwingSynchronizedCache;
  import org.xnap.peer.HotlistItem;
  import org.xnap.peer.HotlistManager;
  import org.xnap.util.Preferences;
  
  
  public class HotlistPanel extends JPanel 
      implements ActionProvider, ActionListener, SwingListListener {
  
      // --- Data Field(s) ---
  
      private static Preferences prefs = Preferences.getInstance();
  
      private JTable jtaHotlist;
      private HotlistTableModel tmHotlist;
      private JComboBox jcbFilter;
      private DefaultComboBoxModel dlmFilter;
  	private HashSet categories = new HashSet();
  
      //--- Constructor(s) ---
  	
      public HotlistPanel()
      {
  		initialize();
  
  		setPreferredSize(new Dimension(300, 400));
  
  		SwingSynchronizedCache cache = new SwingSynchronizedCache(this);
  		HotlistManager.getInstance().addListListener(cache);
      }
  
      // --- Method(s) ---
  
      private void initialize()
      {
  		// hotlist table
  		tmHotlist = new HotlistTableModel();
  		jtaHotlist = tmHotlist.createTable(prefs, "hotlist");
  		jtaHotlist.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  
  		JScrollPane jsp = new JScrollPane(jtaHotlist);
  		//jsp.setBorder(GUIHelper.createEmptyBorder());
  
  		// add existing items
  		HotlistItem[] items = HotlistManager.getInstance().getItems();
  		tmHotlist.itemsAdded(items);
  
  		// hotlist table popup
  		HotlistItemMenu jm = new HotlistItemMenu();
  
  		jtaHotlist.addMouseListener(new PopupListener(jm));
  
 		// filter combo box
 		JPanel jpFilter = new JPanel();
 		jpFilter.setLayout(new BoxLayout(jpFilter, BoxLayout.X_AXIS));
 		jpFilter.setBorder(new EmptyBorder(5, 5, 5, 5));
 
 		JLabel l = new JLabel(XNap.tr("Show"));
 		jpFilter.add(l);
 		jpFilter.add(Box.createHorizontalStrut(5));
 
         dlmFilter = new DefaultComboBoxModel();
         dlmFilter.addElement(new HotlistTableModel.AllFilter());
     	jcbFilter = new JComboBox(dlmFilter);
 		l.setLabelFor(jcbFilter);
 		jcbFilter.addActionListener(this);
     	jpFilter.add(jcbFilter);
 
 		// title
 		JLabel jlTitle = new JLabel(XNap.tr("Hotlist"));
 		jlTitle.setIcon(IconHelper.getListIcon("kdmconfig.png"));
 		jlTitle.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
 
 		JPanel jpNested = new JPanel(new BorderLayout());
 		jpNested.add(jpFilter, BorderLayout.NORTH);
 		jpNested.add(jsp, BorderLayout.CENTER);
 
 		setLayout(new BorderLayout());
 		add(jlTitle, BorderLayout.NORTH);
 		add(jpNested, BorderLayout.CENTER);
 
 		tmHotlist.setFilter
 			((HotlistTableModel.UserFilter)jcbFilter.getSelectedItem());
 		GUIHelper.setMnemonics(this);
     }
 
     /***
      * Called when a filter is selected.
      */
     public void actionPerformed(ActionEvent event) 
     {
 		tmHotlist.setFilter
 			((HotlistTableModel.UserFilter)jcbFilter.getSelectedItem());
     }
 
     public Action[] getActions()
     {
 		return null; //new AbstractAction[] {  };
     }
 
     /***
      * Invoked when items have been added.
      */
     public void itemsAdded(Object[] items)
     {
 		tmHotlist.itemsAdded(items);
 		
 		for (int i = 0; i < items.length; i++) {
 			String category = ((HotlistItem)items[i]).getCategory();
 			if (!categories.contains(category)) {
 				categories.add(category);
 				dlmFilter.addElement(new HotlistTableModel.CategoryFilter(category));
 			}
 		}
     }
 
     /***
      * Invoked when items have been removed.
      */
     public void itemsRemoved(Object[] items) 
     {
 		tmHotlist.itemsRemoved(items);
     }
 	
     //--- Inner Class(es) ---
 
     public class HotlistItemMenu extends AbstractDynamicMenu {
 
 		public HotlistItemMenu()
 		{
 			super("");
 		}
 
 		protected void willBecomeVisible()
 		{
 			removeAllTemporaries();
 			//addActions(pp.getPeers());
 			int row = jtaHotlist.getSelectedRow();
 			Action[] actions = tmHotlist.get(row).getActions();
 			if (actions != null) {
 				for (int i = 0; i < actions.length; i++) {
 					addTemporary(new XNapMenuItem(actions[i]));
 				}
 			}
 		}
 
     }
 
 }