/* File: PopupTextFieldDialog.java */

package O2PlibSS.gui;

import java.awt.*;
import java.awt.event.*;

/**
 * Class PopupTextFieldDialog provides a popup text field with
 * a Done and Cancel buttons. The result will be in 
 *<P>
 * <P> 
 * This code is available at the HTMLtools project on SourceForge at
 * <A HREF="http://htmltools.sourceforge.org/">http://htmltools.sourceforge.org/</A>
 * under the "Common Public License Version 1.0" 
 * <A HREF="http://www.opensource.org/licenses/cpl1.0.php">
 * http://www.opensource.org/licenses/cpl1.0.php</A>.<P></P>
 * <P>
 * It was derived and refactored from the open source
 * MAExplorer (http://maexplorer.sourceforge.org/), and
 * Open2Dprot (http://Open2Dprot.sourceforge.net/) Table modules.
 * <P>
 * $Date: 2009/07/03 11:45:56 $ $Revision: 1.28 $
 * <BR> 
 * Copyright 2008, 2009 by Peter Lemkin 
 * E-Mail: lemkin@users.sourceforge.net 
 * <A HREF="http://lemkingroup.com/">http://lemkingroup.com/</A>
 */

public class PopupTextFieldDialog extends Dialog implements ActionListener,
                                                            WindowListener
{ /* Popup */

  /** frame id */
  final static long
	serialVersionUID= 0;
				
  /** Frame where dialog box is added */
  private Frame
    f;
    
  /** Message to display */
  private String
    msg;

  /** Returned value from text field */
  public String
    answer;
  /** Returned true if pressed DONE */
  public boolean
    okFlag;
  /** text field */
  private TextField
    tf;
  	
  
  /**
   * PopupTextFieldDialog () - constructor
   * @param msg to display
   */
  public PopupTextFieldDialog(Frame f, String msg, String defaultAnswer)
  { /* Popup */ 
    super(f, "Message", true);
    
    this.f= f;
    this.msg= msg;

    answer= (defaultAnswer==null) ? "" : defaultAnswer;
    okFlag= false;

    popupTextField();
  } /* PopupTextFieldDialog */

  
  /**
   * popupTextField() - popup text field. When OK or Cancel is pressed
   * the okFlag is set true or false and the answer field is set
   * for true.
   */
  public void popupTextField()
  { /* popupTextAreaViewer */ 
    if(msg==null)
      msg= "Enter response and press Done";
    else if(msg.length()<20)
    { /* add trailing spaces */
      while(msg.length()<20)
       msg = msg + " ";  
    }
      
    this.add("North",new Label(msg));
    
    Panel
      ctrlPanel= new Panel(),
      textPanel= new Panel(new BorderLayout());
    this.add("Center",textPanel);
    this.add("South",ctrlPanel);
    
    /* Add text area */
    tf= new TextField(answer);
    textPanel.add("Center",tf);

    /* add buttons */
    Button b;
    b= new Button("Done");
    b.addActionListener(this);
    ctrlPanel.add(b);

    b= new Button("Cancel");
    ctrlPanel.add(b);
    b.addActionListener(this);
    
    /* set size */
    this.setSize(400,35);
    this.setTitle(msg);
    this.pack();
      
    /* put the Dialog box in the middle of the frame */
    Dimension
      myDim= this.getSize(),
      frameDim= f.getSize(),
      screenSize= getToolkit().getScreenSize();
    Point loc= f.getLocation();
    
    loc.translate((frameDim.width - myDim.width)/2,
    (frameDim.height - myDim.height)/2);
    loc.x= Math.max(0,Math.min(loc.x,screenSize.width-this.getSize().width));
    loc.y= Math.max(0,Math.min(loc.y,screenSize.height-this.getSize().height));
    
    this.setLocation(loc.x,loc.y);
    this.setVisible(true);
  } /* popupTextAreaViewer */
  
  
  /**
   * actionPerformed() - handle action events
   * @param ae is the ActionEvent
   */
  public void actionPerformed(java.awt.event.ActionEvent ae)
  {  /* actionPerformed */
    String cmd= ae.getActionCommand();
    
    if(cmd.equals("Done"))
    {
      answer= tf.getText();
      okFlag= true;
      close();
    }
    
    else if(cmd.equals("Cancel"))
    {
      okFlag= false;
      close();
    }
  } /* actionPerformed */
  
  
  /**
   * close() - close this popup
   */
  private void close()
  { /* close */
    this.dispose();
  } /* close */
  
  
  /**
   * windowClosing() - close down the window - assume false.
   */
  public void windowClosing(WindowEvent e)
  { /* close */
    close();
  } /* close */
  
  /* Others not used at this time */
  public void windowOpened(WindowEvent e)  { }
  public void windowActivated(WindowEvent e)  { }
  public void windowClosed(WindowEvent e)  {}
  public void windowDeactivated(WindowEvent e)  { }
  public void windowDeiconified(WindowEvent e)  { }
  public void windowIconified(WindowEvent e)  { }

  
} /* End of class Popup */