Keyboard Loop in Programmatically Created Window

• Subject: Keyboard Loop in Programmatically Created Window
• From: Jerry Krinock <email@hidden>
• Date: Sat, 31 Mar 2007 22:14:54 -0700
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Here is the code that I use to verify that the loop is set up correctly:

NSView* r ;
r = [window initialFirstResponder] ;
NSLog(@"initialFirstResponder = %x %@", r, [(NSButton*)r title]) ;
r = (NSView*)[window firstResponder] ;
NSLog(@"firstResponder = %x %@", r, [(NSButton*)r title]) ;
r = [r nextKeyView] ;
NSLog(@"secondResponder = %x %@", r, [(NSButton*)r title]) ;
r = [r nextKeyView] ;
NSLog(@"thirdResponder = %x %@", r, [(NSButton*)r title]) ;
r = [r nextKeyView] ;
NSLog(@"fourthResponder = %x %@", r, [(NSButton*)r title]) ;

And the resulting console log:

initialFirstResponder = 15e720a0 Keep securely in my Keychain.
firstResponder = 15e720a0 Keep securely in my Keychain.
secondResponder = 15e387a0 Cancel
thirdResponder = 15e12300 OK
fourthResponder = 15e720a0 Keep securely in my Keychain.

Does anyone know what else I need to do?

Jerry Krinock

Here's all the code:

@interface NSView (KeyboardLooping)

- (void)makeNextKeyViewOfWindow:(NSWindow*)window
                 firstResponder:(NSView**)hdlFirstResponder
              previousResponder:(NSView**)hdlPreviousResponder ;

@end

@implementation NSView (KeyboardLooping)

- (void)makeNextKeyViewOfWindow:(NSWindow*)window
                 firstResponder:(NSView**)hdlFirstResponder
              previousResponder:(NSView**)hdlPreviousResponder {
    if (!*hdlFirstResponder) {
        if ([window makeFirstResponder:self]) {
            [window setInitialFirstResponder:self] ;
            *hdlFirstResponder = self ;
            *hdlPreviousResponder = self ;
        }
    }
    else {
        [*hdlPreviousResponder setNextKeyView:self] ;
        *hdlPreviousResponder = self ;
    }
}

@end

// Set up the keyboard loop for tabbing
// In this example, the thirdButton and helpButton are nil
// But it still works since messages to nil are ignored.
NSView* firstResponder = nil ;
NSView* previousResponder = nil ;
NSView* responder = nil ;
responder = checkbox ;
[responder makeNextKeyViewOfWindow:window
                    firstResponder:&firstResponder
	 previousResponder:&previousResponder] ;
responder = helpButton ;
[responder makeNextKeyViewOfWindow:window
                    firstResponder:&firstResponder
                 previousResponder:&previousResponder] ;
responder = secondButton ;
[responder makeNextKeyViewOfWindow:window
                    firstResponder:&firstResponder
                 previousResponder:&previousResponder] ;
responder = thirdButton ;
[responder makeNextKeyViewOfWindow:window
                    firstResponder:&firstResponder
                 previousResponder:&previousResponder] ;
responder = firstButton ;
[responder makeNextKeyViewOfWindow:window
                    firstResponder:&firstResponder
                 previousResponder:&previousResponder] ;
[responder setNextKeyView:firstResponder] ; // Close the loop
	

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