Hello/Goodbye in Cappuccino

HelloGoodbye.j

import <Foundation/CPObject.j>


@implementation AppController : CPObject
{
	CPTextField label;
}

- (void)applicationDidFinishLaunching:(CPNotification)aNotification
{
    var theWindow = [[CPWindow alloc] initWithContentRect:CGRectMakeZero() styleMask:CPBorderlessBridgeWindowMask],
        contentView = [theWindow contentView];
    
    label = [[CPTextField alloc] initWithFrame:CGRectMakeZero()];
    
    [label setAlignment:CPCenterTextAlignment]; 
	[label setStringValue:@"Hello World!"];
    [label setFont:[CPFont boldSystemFontOfSize:24.0]];
    
    [label sizeToFit];
    
    [label setAutoresizingMask:CPViewMinXMargin | CPViewMaxXMargin | CPViewMinYMargin | CPViewMaxYMargin];
    [label setFrameOrigin:CGPointMake((CGRectGetWidth([contentView bounds]) - CGRectGetWidth([label frame])) / 2.0, (CGRectGetHeight([contentView bounds]) - CGRectGetHeight([label frame])) / 2.0)];
    
    [contentView addSubview:label];

	var button = [[CPButton alloc] initWithFrame: CGRectMake(
		 CGRectGetWidth([contentView bounds])/2.0 - 40,
		 CGRectGetMaxY([label frame]) + 10,
		 80, 18
		 )]; 
		
		[button setAutoresizingMask:CPViewMinXMargin |
		 			    CPViewMaxXMargin |
		 			    CPViewMinYMargin |
		 			    CPViewMaxYMargin];
		[button setTitle:"swap"];
		
	 	[button setTarget:self]; 
		[button setAction:@selector(swap:)]; 
		
		[contentView addSubview:button]; 
    
    [theWindow orderFront:self];

    [CPMenu setMenuBarVisible:YES];
}

- (void)swap:(id)sender
{
	if ([label stringValue] == "Hello World!")
	    [label setStringValue:"Goodbye!"];
	else
	    [label setStringValue:"Hello World!"];
}

@end