Re: Alternating Button

FROM : Gerriet M. Denkmann
DATE : Tue Apr 01 21:51:58 2008

On 1 Apr 2008, at 18:16, Jean-Daniel Dupas wrote:
>
> I dont think there is an automatic way to have it (except for menu 
> items), but you can have a look at the flagsChanged: method of 
> NSResponder.
>
> Le 1 avr. 08 à 17:24, Gerriet M. Denkmann a écrit :

>> The FindPanel in TextEdit has in the bottom left corner a button 
>> "Replace All" which changes to "In Selection" when the ⌥-key is 
>> pressed.
>>
>> How is this done? I want to have such a changing button in some of 
>> my own panels.


Well, I did have a look at the flagsChanged: method of NSResponder.

My window has the following responder chain:

<NSTextView: 0x6a04a0>        //    field editor of myTextField
<_NSKeyboardFocusClipView: 0x6b5920>
<NSTextField: 0x6866a0>        //    myTextField
<NSView: 0x686ff0>            //    contentView
<NSPanel: 0x6a23c0>        //    window
(Mail.app did again eat all newlines when I pasted the text above. 
How can this be avoided? This kind of starts to get annoying.)

Now the question: where to override flagsChanged: ?
Or subclass NSPanel and override sendEvent ?
Or put a subclass of NSResponder on top of the responder chain? How 
to keep it there (overriding makeFirstResponder in NSWindow?)


Kind regards,

Gerriet.