I am trying to implement choosing default fonts, as found in the OS-X 10.6
version of TextEdit's Preferences dialog.
i.e., you press a button, and it brings up the Font Chooser, and you select a
font and it shows the name of the font in the dialog.
Now I thought I had it all working, but the trouble is I have the option in
System Preferences, Keyboard prefs called "Full Keyboard Access" to allow focus
in all controls. When I turn that option off, nothing in my dialog has explicit
focus, and so it seems, changeFont: is never called, presumably because my
delegate object for the window is not in the responder chain. I've tried to
explicitly make my window the first responder, and to make the button the first
responder, but apparently no dice, they are not allowed to be first responder,
or even in the responder chain, because they have no focusable objects.
I could change the action for NSFontManager, but this breaks things for other
uses of the NSFontManager, and seems like a bad idea. I notice that TextEdit
when you press a change font in TextEdit Preferences it explicitly makes the
text fields to NOT be first responder, so it seems like it is also using the
first responder mechanism to make it work. But I can't seem to.
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