/*
Copyright 2007 Infordata S.p.A.

Licensed 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.
*/

/*
    ***
!!V 09/07/98 rel. 1.10 - creation.
 */


package net.infordata.em.tn5250;


import java.util.ResourceBundle;

import javax.swing.JOptionPane;

import net.infordata.em.crt5250.XI5250Crt;
import net.infordata.em.crt5250.XI5250CrtCtrl;
import net.infordata.em.crt5250.XI5250CrtFrame;
import net.infordata.em.util.XICommand;


/**
 * Handles common commands shared by XI5250Frame and XI5250Applet.
 */
public class XI5250EmulatorCtrl extends XI5250CrtCtrl {

  // images
  private static XIImagesBdl cvImagesBdl =
      net.infordata.em.tn5250.XIImagesBdl.getImagesBdl();

  private static ResourceBundle cvRes =
      ResourceBundle.getBundle("net.infordata.em.tn5250.resources.Res");

  public static final String CONNECT_CMD          = "CONNECT_CMD";
  public static final String DISCONNECT_CMD       = "DISCONNECT_CMD";

  public static final String ABOUT_CMD            = "ABOUT_CMD";

  public static final String SNAPSHOT_CMD         = "SNAPSHOT_CMD";

  private int ivSnapShotCount = 0;


  /**
   */
  public XI5250EmulatorCtrl(XI5250Emulator aCrt) {
    super(aCrt);

    getEmulator().addEmulatorListener(new EmulatorListener());

    // Connect command
    getCommandMgr().enableCommand(
        CONNECT_CMD, !getEmulator().isActive());
    getCommandMgr().setCommand(CONNECT_CMD,  new XICommand() {
      public void execute() {
        processConnectCmd();
      }
    });

    // Disconnect command
    getCommandMgr().enableCommand(
        DISCONNECT_CMD, getEmulator().isActive());
    getCommandMgr().setCommand(DISCONNECT_CMD,  new XICommand() {
      public void execute() {
        processDisconnectCmd();
      }
    });

    // About command
    getCommandMgr().setCommand(ABOUT_CMD, new XICommand() {
      public void execute() {
        processAboutCmd();
      }
    });

    // Snapshot command
    getCommandMgr().setCommand(SNAPSHOT_CMD, new XICommand() {
      public void execute() {
        processSnapShotCmd();
      }
    });
  }


  /**
   */
  public final XI5250Emulator getEmulator() {
    return (XI5250Emulator)getCrt();
  }


  /**
   */
  protected void processConnectCmd() {
    if (!getEmulator().isActive()) {
      Object ret = JOptionPane.showInputDialog(
                       getEmulator(),
                       cvRes.getString("TXT_HostNameInput"),
                       "", JOptionPane.QUESTION_MESSAGE, null,
                       null, getEmulator().getHost());
      if (ret == null)
        return;
      getEmulator().setHost((String)ret);
    }
    getEmulator().setActive(true);
  }


  /**
   */
  protected void processDisconnectCmd() {
    if (getEmulator().isActive()) {
      int ret = JOptionPane.showConfirmDialog(
                   getEmulator(),
                   cvRes.getString("TXT_ConfirmDisconnect"),
                   "", JOptionPane.YES_NO_OPTION);
      if (ret == JOptionPane.NO_OPTION)
        return;
    }
    getEmulator().setActive(false);
  }


  /**
   */
  protected void processAboutCmd() {
    String forkedFrom = cvRes.getString("TXT_Forked").replaceFirst("%1s", "xtn5250");
    forkedFrom = forkedFrom.replaceFirst("%2s", "Infordata S.p.A.");
    JOptionPane.showMessageDialog(getEmulator(),
				  cvRes.getString("TXT_Version").replaceFirst("%1s", XI5250Emulator.VERSION) + "\n" +
                                  "\n" +
				  "Mahefa Randimbisoa http://xtn5250mg.sf.net\n" +
                                  "\n" +
				  forkedFrom + "\n" +
                                  "http://xtn5250.sourceforge.net",
                                  cvRes.getString("TXT_About"),
                                  JOptionPane.INFORMATION_MESSAGE,
                                  cvImagesBdl.getIcon("Logo"));
  }


  /**
   */
  protected void processSnapShotCmd() {
    XI5250Crt clone = getEmulator().getStaticClone();
    String title = cvRes.getString("TXT_SnapShot") + " " + getEmulator().getHost() + " #" +
                   (++ivSnapShotCount);
    XI5250CrtFrame frm = new XI5250CrtFrame(title, clone);
    frm.setBounds(0, 0, 728, 512);
    frm.centerOnScreen();
    frm.setVisible(true);
  }


  //////////////////////////////////////////////////////////////////////////////

  /**
   * Usata per sincronizzare i comandi con lo stato dell' emulator.
   */
  class EmulatorListener extends XI5250EmulatorAdapter {

    protected void enableCmd() {
      getCommandMgr().enableCommand(
          CONNECT_CMD, !getEmulator().isActive());
      getCommandMgr().enableCommand(
          DISCONNECT_CMD, getEmulator().isActive());
    }

    @Override
    public void connecting(XI5250EmulatorEvent e) {
      enableCmd();
    }

    @Override
    public void connected(XI5250EmulatorEvent e) {
      enableCmd();
    }

    @Override
    public void disconnected(XI5250EmulatorEvent e) {
      enableCmd();
    }

    @Override
    public void stateChanged(XI5250EmulatorEvent e) {
    }
  }
}