Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2020 gvSIG Association.

 *

 * 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; either version 3

 * of the License, or (at your option) any later version.

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.utils.swing.jcomboServer;

import javax.swing.ComboBoxModel;

import javax.swing.DefaultComboBoxModel;

import javax.swing.JComboBox;

/**

 * This class is a controller for a JComboBox component. It contains ServerData 

 * objects and it is able to show them in last access order.

 * It has methods to add ServerData objects and to retrieve them.

 *

 * @author gvSIG Team

 */

public class ComboServerController {

  private final JComboBox combo;

  public ComboServerController(JComboBox combo) {

    this.combo = combo;

  }

  public ComboServerController(JComboBox combo, ServerData[] servers) {

    this.combo = combo;

    this.combo.setModel(new DefaultComboBoxModel(setLastAccessOrder(servers)));

  }

  public JComboBox getCombo() {

    return this.combo;

  }

  /**

   * This method returns the selected server

   *

   * @return A Server

   */

  public ServerData getSelectedServer() {

    try {

      return (ServerData) this.combo.getSelectedItem();

    } catch (ClassCastException e) {

      return new ServerData((String) this.combo.getSelectedItem(), "", "");

    }

  }

  /**

   * This method adds a new Server in order

   *

   *

   * @param server New Server

   */

  public void addServer(ServerData server) {

    ServerData[] servers = getAllServers();

    ServerData[] newServers = new ServerData[servers.length + 1];

    System.arraycopy(servers, 0, newServers, 0, servers.length);

    newServers[servers.length] = server;

    newServers = setLastAccessOrder(newServers);

    setServerList(newServers);

  }

  /**

   * This method returns an array with all the servers that the combo contains

   *

   *

   * @return An array of servers

   */

  public ServerData[] getAllServers() {

    ServerData[] servers = new ServerData[this.combo.getItemCount()];

    for (int i = 0; i < this.combo.getItemCount(); i++) {

      servers[i] = (ServerData) this.combo.getItemAt(i);

    }

    return servers;

  }

  /**

   * It adds a server list

   *

   *

   * @param servers Array with servers

   */

  public void setServerList(ServerData[] servers) {

    this.combo.removeAllItems();

    servers = setLastAccessOrder(servers);

    for (int i = 0; i < servers.length; i++) {

      try {

        if (!(servers[i].getServerAddress().equals(""))) {

          this.combo.addItem(servers[i]);

        }

      } catch (java.lang.NullPointerException e) {

        //Server is null

      }

    }

  }

  /**

   * This method order all the servers in the combo

   *

   */

  public void setServersOrder() {

    ServerData[] servers = getAllServers();

    servers = setLastAccessOrder(servers);

    setServerList(servers);

  }

  /**

   * This static method ordered an array of servers by last access

   *

   *

   * @return A new array

   * @param servers Array of servers

   */

  private static ServerData[] setLastAccessOrder(ServerData[] servers) {

    ServerData[] orderedServerData = new ServerData[servers.length];

    for (int i = 0; i < servers.length; i++) {

      int pos = getServerPosition(servers, i);

      orderedServerData[pos] = servers[i];

    }

    return orderedServerData;

  }

  /**

   * This static function return the ordered position of a server. The algorithm

   * to order can be changed.

   *

   *

   * @return Number with the new position

   * @param servers Array that contains all the servers

   * @param serverPos Server position

   */

  private static int getServerPosition(ServerData[] servers, int serverPos) {

    int pos = 0;

    for (int i = 0; i < servers.length; i++) {

      if (!(servers[serverPos].getServerAddress().equals(servers[i].getServerAddress()))) {

        if (servers[serverPos].getLastAccess().before(servers[i].getLastAccess())) {

          pos++;

        }

        if (servers[serverPos].getLastAccess().equals(servers[i].getLastAccess())) {

          if (serverPos < i) {

            pos++;

          }

        }

      }

    }

    return pos;

  }

  public void setModel(ComboBoxModel model) {

    this.combo.setModel(model);

  }

  public ComboBoxModel getModel() {

    return this.combo.getModel();

  }

  public int getItemCount() {

    return this.combo.getItemCount();

  }

  public Object getItemAt(int i) {

    return this.combo.getItemAt(i);

  }

}