serverdialog.java

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/*
 * cs101 ServerDialog
 * $Id: ServerDialog.java,v 1.1.1.1 2002/06/05 21:56:32 root Exp $
 *
 * Developed for "Rethinking CS101", a project of Lynn Andrea Stein's AP Group.
 * For more information, see <a href="http://www.ai.mit.edu/projects/cs101/">the
 * CS101 homepage</a> or email <[e-mail]>.
 *
 * Copyright (C) 1996 Massachusetts Institute of Technology.
 * Please do not redistribute without obtaining permission.
 */

package cs101.awt;

/**
 * Manages a top level query dialog box to get port connection information.
 * To display the dialog box, use ask(); to extract the port number, use
 * getPort().<p>
 * 
 * Relies heavily on QueryDialog.
 *
 * <P>Copyright (c) 1998 Massacuhsetts Institute of Technology
 *
 * @author Todd C. Parnell, [e-mail]
 * @author Nathan Williams <[e-mail]>
 * @author Lynn Andrea Stein <[e-mail]>
 * @version $Id: ServerDialog.java,v 1.1.1.1 2002/06/05 21:56:32 root Exp $
 *
 * @see cs101.awt.QueryDialog
 * @see #ask
 * @see #getPort
 */
public class ServerDialog {
  
    protected QueryDialog qd;
    protected String[] answers,
	                       questions;
    /**
     * Creates the dialog information.
     * To show the dialog, call ask().
     * To retrieve information, use int getPort().
     */
     public ServerDialog() {
	 this.questions = new String[1];
	 this.questions[0] = "Port";
	 this.answers = new String[1];
	 this.answers[0] = "4321";
	 this.qd = new QueryDialog("Please enter the port to listen on.",
				   this.questions,
				   this.answers);
    }

    /**
     * Actually display the query dialog and get the answers from the user.
     *
     * @see #getPort()
     */ 
    public synchronized void ask() {
	this.answers = this.qd.ask();
    }

    /**
     * Return the port number from the user.  Not guaranteed to be sensible
     * if ask hasn't aready been called.
     *
     * @see #ask()
     */
    public synchronized int getPort() {
	try {
	    return Integer.parseInt( this.answers[0] );
	} catch ( NumberFormatException e ) {
	    throw new RuntimeException("Bad port number '"+answers[0]+"'");
	}
    }

}
    
    
/*
 * $Log: ServerDialog.java,v $
 * Revision 1.1.1.1  2002/06/05 21:56:32  root
 * CS101 comes to Olin finally.
 *
 * Revision 1.5  1998/07/24 17:06:31  tparnell
 * Placate new javadoc behavior
 *
 * Revision 1.4  1998/07/22 18:18:41  tparnell
 * migration from cs101.util to cs101.*
 *
 * Revision 1.3  1998/07/21 20:19:17  tparnell
 * javadoc bugfix
 *
 * Revision 1.2  1998/06/03 19:52:01  tparnell
 * update from Java 1.0 to 1.1
 *
 * Revision 1.1  1998/03/13 22:18:21  tparnell
 * Import from server crash.  I think the src and class files match up.
 *
 * Revision 1.1  1996/11/18 17:25:06  las
 * Added revised SharedWhiteboard support classes.  These versions of
 * Client and Server supercede the previous ones and are not directly
 * backwards compatible.  In particular, Server is an instantiable class
 * rather than a primarily static one (use RunServer to run it), and
 * Client uses StringHandler rather than subclassing to specialize it.
 * Line.java just picked up some obscure documentation along the way.
 * Otherwise, classes are direct imports from SharedWhiteboard.
 *
 * Revision 1.4  1996/11/17 22:28:17  las
 * Everything compiles (now).  Client, Server, ClientDialog, ServerDialog,
 * StringHandler, and RunServer need to be moved to cs101.util.  But
 * first, to test....
 *
 * Revision 1.3  1996/11/17 21:26:54  las
 * Client, ClientDialog writen, not yet tested.
 *
 */