msgdialog.java

Java实现的遗传算法工具集：GA Playground

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

import java.util.*;


/**
* This class mimics the MessageBox API from Windows
* It can be used for notifying short message to the user
* or for debugging purpose
* <p>
* <b>Here is how to use this class :</b><br>
* <code>int ret = MsgDialog.msg( ... valid argument list ...)</code>
* <br>There are many overloaded methods for <code>msg</code>, please refer to the doc below.
* <p>
* The dialog size if arbitrary fixed to maximum 1/3 of screen size
* If the message is longer than the availabe space, it is displayed
* using multiple lines.  Lines are cutted at SPACE character only
*
* @since JDK 1.1.X
* @author <a href="mailto:[e-mail]">S閎astien Stormacq</a>
*         works as Software Engineer for AmbraSoft sa,<br>
*         a company based in Luxembourg, specialized in client server development.<br>
*         His main interests are Internet/Intranet technologies and object oriented development.<br>
*         Sebastien Stormacq is a Sun Certified Java Programmer.<br>
*         You can reach him by email at <a href="mailto:[e-mail]">[e-mail]</a>
* @version 1.0 February 1998
*/
public class MsgDialog extends Dialog implements ActionListener {

    /**
    * Style constant : displays a single button labelled "Retry"
    */
    public static final int MB_RETRY  = 2;
    /**
    * Style constant : displays a single button labelled "No"
    */
    public static final int MB_NO     = 4;
    /**
    * Style constant : displays a single button labelled "Yes"
    */
    public static final int MB_YES    = 8;
    /**
    * Style constant : displays a single button labelled "Ok"
    */
    public static final int MB_OK     = 16;
    /**
    * Style constant : displays a single button labelled "Cancel"
    */
    public static final int MB_CANCEL = 32;

    /**
    * Style constant : displays two buttons labelled "Yes" and "No"
    */
    public static final int MB_YESNO     = MB_YES | MB_NO;
    /**
    * Style constant : displays two buttons labelled "Ok" and "Cancel"
    */
    public static final int MB_OKCANCEL  = MB_OK | MB_CANCEL;
    /**
    * Style constant : displays three buttons labelled "Ok","Cancel" and "Retry"
    */
    public static final int MB_OKCANCELRETRY  = MB_OK | MB_CANCEL | MB_RETRY;

    private static final int ID_NONE   = 0;
    /**
    * Return value : the user pressed the "Yes" button
    */
    public static final int ID_YES    = 1;
    /**
    * Return value : the user pressed the "No" button
    */
    public static final int ID_NO     = 2;
    /**
    * Return value : the user pressed the "Cancel" button
    */
    public static final int ID_CANCEL = 3;
    /**
    * Return value : the user pressed the "Ok" button
    */
    public static final int ID_OK     = 4;
    /**
    * Return value : the user pressed the "Retry" button
    */
    public static final int ID_RETRY  = 5;

    /**
    * Do not display an icon
    */
    public static final int ICON_NONE        = 0;
    /**
    * Icon to display : an "Information" sign
    */
    public static final int ICON_INFORMATION = 1;
    /**
    * Icon to display : an "STOP" sign
    */
    public static final int ICON_STOP        = 2;
    /**
    * Icon to display : an "Warning" sign
    */
    public static final int ICON_WARNING     = 3;
    
    public static final int ICON_MULTI_CENTER= 11;
    public static final int ICON_MULTI_LEFT  = 12;

    /**
    *  This method displays a dialog to the user
    *
    * @param Frame  the parent window of the dialog, this frame will receive
    *               the focus when the user exits the dialog
    * @param String the title of the dialog
    * @param String the message to be displayed
    * @param int    the style of the dialog, ie. one of the MB_XXX constants.  These can be added
    * @param int    the icon to use, see the ICON_XXX constants
    * @return int   the id of the button pressed by the user
    * @see          MB_OK
    * @see          MB_CANCEL
    * @see          MB_YES
    * @see          MB_NO
    * @see          MB_RETRY
    * @see          ID_OK
    * @see          ID_YES
    * @see          ID_NO
    * @see          ID_CANCEL
    * @see          ID_RETRY
    * @see          ICON_STOP
    * @see          ICON_INFORMATION
    * @see          ICON_WARNING
    *               
    */
    public static int msg(Frame parent, String title, String msg, int style, int icon) {
        MsgDialog d = new MsgDialog(parent, title, msg, style, icon);
        d.setVisible(true);
        return d.getRetValue();
    }
    /**
    *  This method displays a dialog without title. 
    *  It is equivalent to give an empty title as parameter
    *
    * @param Frame  the parent window of the dialog, this frame will receive
    *               the focus when the user exits the dialog
    * @param String the message to be displayed
    * @param int    the style of the dialog, ie. on eof the MB_XXX constants.  These can be added
    * @param int    the icon to use, see the ICON_XXX constants
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(Frame parent, String msg, int style, int icon) {
        return msg(parent, parent.getTitle(), msg, style, icon);
    }    
    /**
    *  This method displays a dialog without icon. 
    *  It is equivalent to give the NO_ICON parameter
    *
    * @param Frame  the parent window of the dialog, this frame will receive
    *               the focus when the user exits the dialog
    * @param String the title of the dialog
    * @param String the message to be displayed
    * @param int    the style of the dialog, ie. on eof the MB_XXX constants.  These can be added
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(Frame parent, String title, String msg, int style) {
        return msg(parent, title, msg, style, ICON_NONE);
    }    
    /**
    *  This method displays a dialog without title and without icon. 
    *  It is equivalent to give an empty title and the NO_ICON parameters
    *
    * @param Frame  the parent window of the dialog, this frame will receive
    *               the focus when the user exits the dialog
    * @param String the message to be displayed
    * @param int    the style of the dialog, ie. on eof the MB_XXX constants.  These can be added
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(Frame parent, String msg, int style) {
        return msg(parent, parent.getTitle(), msg, style, ICON_NONE);
    }    
    /**
    *  This method displays a simple message with no title and no icon.
    *  It is equivalent to give an empty title and the NO_ICON parameters.  
    *  The default style is MB_OK
    *
    * @param Frame  the parent window of the dialog, this frame will receive
    *               the focus when the user exits the dialog
    * @param String the message to be displayed
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(Frame parent, String msg) {
        return msg(parent, parent.getTitle(), msg, MB_OK, ICON_NONE);
    }    
    
    /**
    *  This method displays a dialog to the user.  
    *  A default parent frame is created
    *
    * @param String the title of teh dialog
    * @param String the message to be displayed
    * @param int    the style of the dialog, ie. on eof the MB_XXX constants.  These can be added
    * @param int    the icon to use, see the ICON_XXX constants
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(String title, String msg, int style, int icon) {
        Frame parent = new Frame();
        int ret = msg(parent, title, msg, style, icon);
        parent.dispose();
        return ret;
    }
    /**
    *  This method displays a dialog without icon. 
    *  It is equivalent to give the NO_ICON parameter.  
    *  A default parent frame is created. 
    *
    * @param String the title of the dialog
    * @param String the message to be displayed
    * @param int    the style of the dialog, ie. on eof the MB_XXX constants.  These can be added
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(String title, String msg, int style) {
        return msg(title, msg, style, ICON_NONE);
    }    
    /**
    *  This method displays a dialog without icon and without title. 
    *  It is equivalent to give the NO_ICON parameter and to give an empty title.  
    *  A default parent frame is created
    *
    * @param String the message to be displayed
    * @param int    the style of the dialog, ie. on eof the MB_XXX constants.  These can be added
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(String msg, int style) {
        return msg("", msg, style, ICON_NONE);
    }    
    /**
    *  This method displays a dialog a simple message. 
    *  A default parent frame is created. 
    *  This dialog has no title and no icon, its style is MB_OK. 
    *  This is the quickest way to display a simple message to the user. 
    *
    * @param String the message to be displayed
    * @return int   the id of the button pressed by the user
    * @see          msg(java.awt.Frame, java.lang.String, java.lang.String, int, int)
    */
    public static int msg(String msg) {
        return msg("", msg, MB_OK, ICON_NONE);
    }    

    private static final String icon_information = "information.gif";
    private static final String icon_warning     = "warning.gif";
    private static final String icon_stop        = "stop.gif";

    private static final int hGap = 20;
    private static final int vGap = 15;

    private ImageCanvas dlg_icon;
    private Label       dlg_msg;
    private DlgButton   dlg_bOk;
    private DlgButton   dlg_bCancel;
    private DlgButton   dlg_bYes;
    private DlgButton   dlg_bNo;
    private DlgButton   dlg_bRetry;

    //contains the buttons
    private Panel     dlg_buttonPanel;
    
    //contains the icon and the text
    private Panel     dlg_infoPanel;

    //contains the text
    private Panel     dlg_textPanel;
    
    //return value of the MsgBox
    //default value is used when the user close
    //the dlg without using the buttons
    private int ret_value = ID_NONE;

    //constructors are private : this class can never be instanciated
    private MsgDialog(Frame parent, String title, boolean modal) {
        super(parent, title, modal);
    }
    
    
    public static String[] parseStr(String stref, String delim) {
    	
	     String items[];
	     int numTokens;
       int n;
	     String noitems[] = {""};

	     if ((stref == null) || ("".equals(stref.trim())))
		   return noitems;
	 
	     StringTokenizer st = new StringTokenizer(stref,delim);
	     numTokens = st.countTokens();
	     items = new String[numTokens];
	     n = 0;
	     while (st.hasMoreTokens())
	     {
          try
          {
		         items[n] = st.nextToken();
             n++;
          }
          catch(Exception e)
          {
             return noitems;
          }

	    }
	
	    if (n == 0)
		     return noitems;
	    else
	       return items;

    }
    
    
    private MsgDialog(Frame parent, String title, String msg, int style, int icon) {
        
        this(parent, title, true);

        //does not allow to resize the dialog
        setResizable(false);

				 String [] text;
				 	
        dlg_infoPanel   = new Panel();
        dlg_buttonPanel = new Panel();
        dlg_textPanel   = new Panel();

        dlg_icon        = new ImageCanvas(dlg_infoPanel);

        dlg_infoPanel.setLayout(new FlowLayout(FlowLayout.CENTER, hGap, vGap));
        dlg_buttonPanel.setLayout(new FlowLayout());
        
        //add the icon
        if (icon != ICON_NONE) {
            switch (icon) {