"

 COPYRIGHT (c) 1995 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

'From Smalltalk/X, Version:2.10.5 on 14-mar-1995 at 11:07:27 am'!

ToggleController subclass:#RadioButtonController

	 instanceVariableNames:''

	 classVariableNames:''

	 poolDictionaries:''

	 category:'Interface-Support-Controllers'

!

!RadioButtonController class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1995 by Claus Gittinger

	      All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

!

version

!

documentation

"

    RadioButtonControllers redefine the response to a button-click.

    While toggles (i.e. ToggleControllers) change state with every click,

    radioButtons will only do so for an off-to-on transition.

    They will NEVER turn themselfes off with a click.

    To turn a radioButton off, another button in its buttonGroup must

    be turned on and thereby (via the buttonGroup) turn the first button off.

    You can place both toggles (for 'zero-or-one-on' behavior) or

    radiobuttons (for 'one-on' behavior) into a buttongroup.

"

! !

!RadioButtonController methodsFor:'event handling'!

buttonPress:button x:x y:y

    "radiobuttons change only off-to-on; turning off is done by other

     buttons."

    pressed ifFalse:[

	view toggle

    ]

! !