(mode-line-column-line-number-mode-map): New variable.

(standard-mode-line-position): Use it to add a menu for toggling
column number and line number display.

2 files changed, 39 insertions, 8 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 4c101745853..8c3dd53ce45 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2008-03-03  Dan Nicolaescu  <dann@ics.uci.edu>
+
+        * bindings.el (mode-line-column-line-number-mode-map): New variable.
+        (standard-mode-line-position): Use it to add a menu for toggling
+        column number and line number display.
+
 2008-03-03  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         * emacs-lisp/bytecomp.el (byte-compile-maybe-guarded):
diff --git a/lisp/bindings.el b/lisp/bindings.el
index bee285a30b2..646129736b6 100644
--- a/lisp/bindings.el
+++ b/lisp/bindings.el
@@ -299,6 +299,21 @@ Keymap to display on major mode.")
     map) "\
 Keymap to display on minor modes.")
 
+(defvar mode-line-column-line-number-mode-map
+  (let ((map (make-sparse-keymap))
+        (menu-map (make-sparse-keymap "Toggle Line and Column Number Display")))
+    (define-key menu-map [line-number-mode]
+      `(menu-item ,(purecopy "Display Line Numbers") line-number-mode
+                  :help "Toggle displaying line numbers in the mode-line"
+                  :button (:toggle . line-number-mode)))
+    (define-key menu-map [column-number-mode]
+      `(menu-item ,(purecopy "Display Column Numbers") column-number-mode
+                  :help "Toggle displaying column numbers in the mode-line"
+                  :button (:toggle . column-number-mode)))
+    (define-key map [mode-line down-mouse-1] menu-map)
+    map) "\
+Keymap to display on column and line numbers.")
+
 (let* ((help-echo
         ;; The multi-line message doesn't work terribly well on the
         ;; bottom mode line...  Better ideas?
@@ -352,27 +367,37 @@ mouse-3: Toggle minor modes"
          (propertize ")%]--" 'help-echo help-echo)))
 
        (standard-mode-line-position
-        `((-3 ,(propertize "%p" 'help-echo help-echo))
+        `((-3 ,(propertize
+                "%p"
+                'local-map mode-line-column-line-number-mode-map
+                ;; XXX needs better description
+                'help-echo "Size indication mode\n\
+mouse-1: Display Line and Column Mode Menu"))
           (size-indication-mode
            (8 ,(propertize
                 " of %I"
+                'local-map mode-line-column-line-number-mode-map
                 ;; XXX needs better description
-                'help-echo (format "Size indication mode\n%s" help-echo))))
+                'help-echo "Size indication mode\n\
+mouse-1: Display Line and Column Mode Menu")))
           (line-number-mode
            ((column-number-mode
              (10 ,(propertize
                    " (%l,%c)"
-                   'help-echo
-                   (format "Line number and Column number\n%s" help-echo)))
+                   'local-map mode-line-column-line-number-mode-map
+                   'help-echo "Line number and Column number\n\
+mouse-1: Display Line and Column Mode Menu"))
              (6 ,(propertize
                   " L%l"
-                  'help-echo
-                  (format "Line number\n%s" help-echo)))))
+                  'local-map mode-line-column-line-number-mode-map
+                  'help-echo "Line Number\n\
+mouse-1: Display Line and Column Mode Menu"))))
            ((column-number-mode
              (5 ,(propertize
                   " C%c"
-                  'help-echo
-                  (format "Column number\n%s" help-echo)))))))))
+                  'local-map mode-line-column-line-number-mode-map
+                  'help-echo "Column number\n\
+mouse-1: Display Line and Column Mode Menu"))))))))
 
   (setq-default mode-line-format standard-mode-line-format)
   (put 'mode-line-format 'standard-value