Examples of ptolemy.gui.GraphicalMessageHandler

ptolemy.gui.GraphicalMessageHandler

This is a message handler that reports errors in a graphical dialog box. When an applet or application starts up, it should call setContext() to specify a component with respect to which the display window should be created. This ensures that if the application is iconified or deiconified, that the display window goes with it. If the context is not specified, then the display window is centered on the screen, but iconifying and deiconifying may not work as desired.

Note that to display a window with an error message, this graphical handler must be registered by calling {@link ptolemy.util.MessageHandler#setMessageHandler(MessageHandler)}. For example:

 GraphicalMessageHandler handler = new GraphicalMessageHandler(); GraphicalMessageHandler.setMessageHandler(handler); GraphicalMessageHandler.error("My error", new Exception("My Exception"));

If setMessageHandler() is not called, then the error() call will use the default handler and possibly display the message on standard error.

This class is based on (and contains code from) the diva GUIUtilities class. @author Edward A. Lee, Steve Neuendorffer, John Reekie, and Elaine Cheong @version $Id: GraphicalMessageHandler.java,v 1.55 2007/12/07 06:24:40 cxh Exp $ @since Ptolemy II 1.0 @Pt.ProposedRating Yellow (eal) @Pt.AcceptedRating Red (reviewmoderator)

        // then there is a chance that we have not
        // registered the GraphicalMessageHandler yet
        // so we do so now so that we are sure
        // the user can see the message.
        // One way to test this is to run vergil -conf foo
        MessageHandler.setMessageHandler(new GraphicalMessageHandler());


        MessageHandler.error(argsBuffer.toString(), throwable);


        System.exit(0);
    }

        // then there is a chance that we have not
        // registered the GraphicalMessageHandler yet
        // so we do so now so that we are sure
        // the user can see the message.
        // One way to test this is to run vergil -configuration foo
        MessageHandler.setMessageHandler(new GraphicalMessageHandler());


        MessageHandler.error(argsBuffer.toString(), throwable);


        System.exit(0);
    }


        // 2/03: Moved the setMessageHandler() to before parseArgs() so
        // that if we get an error in parseArgs() we will get a graphical
        // stack trace.   Such an error could be caused by specifying a model
        // as a command line argument and the model has an invalid parameter.
        MessageHandler.setMessageHandler(new GraphicalMessageHandler());


        // Even if the user is set up for foreign locale, use the US locale.
        // This is because certain parts of Ptolemy (like the expression
        // language) are not localized.
        // FIXME: This is a workaround for the locale problem, not a fix.

Examples of ptolemy.gui.GraphicalMessageHandler

Related Classes of ptolemy.gui.GraphicalMessageHandler