Re: menu-bar: disable items when no frame visible

[David Reitter]

On 24 Dec 2005, at 21:07, Juri Linkov wrote:

> > (This made sense in my own setup because I have advised switch-to-
> > buffer to show most buffers in a new frame, so I don't usually get
> > that error.)
>
> This looks like what `pop-up-frames' is intended for.

Doesn't open new frames when you find-file or, in general, during  
switch-to-buffer.
Instead, it opens new frames for *Completions* etc, which is very  
annoying and not what I find useful.

I want much more fine-control over what is opened where. I have a  
mode called `one-buffer-one-frame' which will display newly visited  
files in separate frames and generally create new frames for things,  
with the exception of stuff like completions buffers or other  
buffers, usually *...* ones. A more compatible way to do this (better  
than to advise switch-to-buffer and use my own display-buffer  
function) would be much appreciated, of course.

Besides, display-buffer is documented to show the buffer in a new  
window without selecting it. When pop-up-frames is non-nil, it  
creates a new frame, but selects it, which is annoying when you want  
to, e.g. display a quick *Help* but keep working in the original  
frame. The behavior seems to be pretty much against the spirit of  
display-buffer, maybe you could consider it a bug...  (maybe only in  
the Carbon port, haven't checked this.) I remember reading somewhere  
that the system may itself select new frames, and Emacs will accept  
that. Fair enough, but I find my display-buffer function rather useful.

(defun aquamacs-display-buffer (&rest args)
       (let ((display-buffer-function nil))
         (if (and
              one-buffer-one-frame
              (open-in-other-frame-p (car args)))
             (let ((pop-up-frames t)
                   (sframe (selected-frame))
                   (swin (selected-window)))
               (let ((ret (apply (function display-buffer) args)))
               ;; make sure the old frame stays the selected one
               (select-frame sframe)
               (select-window swin)
              ret))
           (apply (function display-buffer) args))))