disable menu-items when frame invisible / inapplicable

[David Reitter]

Can I suggest to disable menu items when the frame they refer to is  
invisible, or when they refer to a buffer and the minibuffer is  
selected?
Note that the menu bar doesn't always have to be inside the frame -  
some systems / window manager configurations allow you to have the  
menu bar on top of the screen or wherever.


*** menu-bar.el 11 Aug 2005 20:57:36 -0000      1.268
--- menu-bar.el 18 Aug 2005 21:43:51 -0000
***************
*** 105,110 ****
--- 105,114 ----

  (define-key menu-bar-file-menu [split-window]
    '(menu-item "Split Window" split-window-vertically
+             :enable (and (frame-live-p menu-updating-frame)
+                          (frame-visible-p menu-updating-frame )
+                          (not (window-minibuffer-p
+                                (frame-selected-window menu-updating- 
frame))))
              :help "Split selected window in two windows"))

  (define-key menu-bar-file-menu [separator-window]
***************
*** 116,121 ****
--- 120,127 ----
              :help "Pretty-print marked region in black and white  
to PostScript printer"))
  (define-key menu-bar-file-menu [ps-print-buffer]
    '(menu-item "Postscript Print Buffer (B+W)" ps-print-buffer
+             :enable (and (frame-live-p menu-updating-frame)
+                          (frame-visible-p menu-updating-frame ))
              :help "Pretty-print current buffer in black and white  
to PostScript printer"))
  (define-key menu-bar-file-menu [ps-print-region-faces]
    '(menu-item "Postscript Print Region" ps-print-region-with-faces
***************
*** 123,128 ****
--- 129,136 ----
              :help "Pretty-print marked region to PostScript  
printer"))
  (define-key menu-bar-file-menu [ps-print-buffer-faces]
    '(menu-item "Postscript Print Buffer" ps-print-buffer-with-faces
+             :enable (and (frame-live-p menu-updating-frame)
+                          (frame-visible-p menu-updating-frame ))
              :help "Pretty-print current buffer to PostScript  
printer"))
  (define-key menu-bar-file-menu [print-region]
    '(menu-item "Print Region" print-region
***************
*** 130,135 ****
--- 138,145 ----
              :help "Print region between mark and current position"))
  (define-key menu-bar-file-menu [print-buffer]
    '(menu-item "Print Buffer" print-buffer
+             :enable (and (frame-live-p menu-updating-frame)
+                          (frame-visible-p menu-updating-frame ))
              :help "Print current buffer with page headings"))

  (define-key menu-bar-file-menu [separator-print]
***************
*** 160,167 ****
              :help "Re-read current buffer from its file"))
  (define-key menu-bar-file-menu [write-file]
    '(menu-item "Save As..." write-file
!             :enable (not (window-minibuffer-p
!                           (frame-selected-window menu-updating- 
frame)))
              :help "Write current buffer to another file"))
  (define-key menu-bar-file-menu [save-buffer]
    '(menu-item "Save" save-buffer
--- 170,180 ----
              :help "Re-read current buffer from its file"))
  (define-key menu-bar-file-menu [write-file]
    '(menu-item "Save As..." write-file
!
!             :enable (and (frame-live-p menu-updating-frame)
!                          (frame-visible-p menu-updating-frame )
!                          (not (window-minibuffer-p
!                                (frame-selected-window menu-updating- 
frame))))
              :help "Write current buffer to another file"))
  (define-key menu-bar-file-menu [save-buffer]
    '(menu-item "Save" save-buffer
***************
*** 1037,1043 ****
    '(menu-item "Truncate Long Lines in this Buffer"
              toggle-truncate-lines
              :help "Truncate long lines on the screen"
!             :button (:toggle . truncate-lines)))

  (define-key menu-bar-options-menu [highlight-separator]
    '("--"))
--- 1050,1058 ----
    '(menu-item "Truncate Long Lines in this Buffer"
              toggle-truncate-lines
              :help "Truncate long lines on the screen"
!             :button (:toggle . truncate-lines)
!             :enable (and (frame-live-p menu-updating-frame)
!                          (frame-visible-p menu-updating-frame ))))

  (define-key menu-bar-options-menu [highlight-separator]
    '("--"))