[ Previous ] [ Index ] [ Next ]

How specify the size, title, and other attributes of a hablet's window

Background Information

In Habanero, there is no HTML page. Instead, the hablet runs in its own window. Thus it needs to have a method that tells it window size and other details.

How does this work?

Things included in the body of startInFrame(MirrorFrame):

• calls to the hablet's init() and start()
• calls to the MirrorFrame to set the window parameter settings -- setTitle(), add(), setVisible(), and show().
• Events for ncsa.habanero.Habanero to share

  public void startInFrame(MirrorFrame f)
  {
    f.setTitle("Habanerized TextDemo");
 
    f.add("Center", this);      // Center hablet in window
    f.setSize(500,200);         // Window's size
    f.setVisible(true);         // Window initially visible
 
    f.show();                   // Show the window
 
    init();                     // Initialize hablet code
    start();                    // Start hablet running

    // Code for event handling goes here.
  }

If you need to post an event from within StartInFrame(), you must post it from a new thread, or it will deadlock.

What next?

• Write methods to transfer state to other instances.
• Take care of event handling.
• Install your new hablet into your Habanero environment.

Habanero^® is a registered trademark owned by The Board of Trustees of the University of Illinois. Copyright 1996-1998. All rights reserved.   Java^(TM) is a proprietary trademark owned by Sun Microsystems, Inc.
The National Center for Supercomputing Applications
University of Illinois at Urbana-Champaign

Contacts page