Add menu configuration to the event configuration.

Tools/idle/Bindings.py

-# The first item of each tuple is the virtual event;
-# each of the remaining items is an actual key binding for the event.
-# (This conveniently forms an argument list for event_add().)
+# The first three items of each tupel pertain to the menu bar.  All
+# three are None if the item is not to appeat in a menu.  Otherwise,
+# the first item is the menu name (in lowercase), the second item is
+# the menu item label; the third item is the keyboard shortcut to be
+# listed in the menu, if any.  Menu items are added in the order of
+# their occurrence in this table.  An item of the form
+# ("menu", None, None) can be used to insert a separator in the menu.
+#
+# The fourth item, if present is the virtual event; each of the
+# remaining items is an actual key binding for the event.  (Thus,
+# items[3:] conveniently forms an argument list for event_add().)
 
 win_bindings = [
-    ("<<beginning-of-line>>", "<Control-a>", "<Home>"),
+    (None, None, None, "<<beginning-of-line>>", "<Control-a>", "<Home>"),
 
-    ("<<expand-word>>", "<Meta-slash>", "<Alt-slash>"),
+    (None, None, None, "<<expand-word>>", "<Meta-slash>", "<Alt-slash>"),
 
-    ("<<newline-and-indent>>", "<Key-Return>", "<KP_Enter>"),
-    ("<<plain-newline-and-indent>>", "<Control-j>"),
+    (None, None, None, "<<newline-and-indent>>", "<Key-Return>", "<KP_Enter>"),
+    (None, None, None, "<<plain-newline-and-indent>>", "<Control-j>"),
 
-    ("<<interrupt-execution>>", "<Control-c>"),
-    ("<<end-of-file>>", "<Control-d>"),
+    (None, None, None, "<<interrupt-execution>>", "<Control-c>"),
+    (None, None, None, "<<end-of-file>>", "<Control-d>"),
 
-    ("<<dedent-region>>", "<Control-bracketleft>"),
-    ("<<indent-region>>", "<Control-bracketright>"),
+    (None, None, None, "<<dedent-region>>", "<Control-bracketleft>"),
+    (None, None, None, "<<indent-region>>", "<Control-bracketright>"),
 
-    ("<<comment-region>>", "<Meta-Key-3>", "<Alt-Key-3>"),
-    ("<<uncomment-region>>", "<Meta-Key-4>", "<Alt-Key-4>"),
+    (None, None, None, "<<comment-region>>", "<Meta-Key-3>", "<Alt-Key-3>"),
+    (None, None, None, "<<uncomment-region>>", "<Meta-Key-4>", "<Alt-Key-4>"),
 
-    ("<<history-previous>>", "<Meta-p>", "<Alt-p>"),
-    ("<<history-next>>", "<Meta-n>", "<Alt-n>"),
+    (None, None, None, "<<history-previous>>", "<Meta-p>", "<Alt-p>"),
+    (None, None, None, "<<history-next>>", "<Meta-n>", "<Alt-n>"),
 
-    ("<<toggle-auto-coloring>>", "<Control-slash>"),
+    (None, None, None, "<<toggle-auto-coloring>>", "<Control-slash>"),
 
-    ("<<close-all-windows>>", "<Control-q>"),
-    ("<<open-new-window>>", "<Control-n>"),
-    ("<<open-window-from-file>>", "<Control-o>"),
-    ("<<save-window>>", "<Control-s>"),
-    ("<<save-window-as-file>>", "<Control-w>"),
-    ("<<save-copy-of-window-as-file>>", "<Meta-w>"),
+    (None, None, None, "<<close-all-windows>>", "<Control-q>"),
+    (None, None, None, "<<open-new-window>>", "<Control-n>"),
+    (None, None, None, "<<open-window-from-file>>", "<Control-o>"),
+    (None, None, None, "<<save-window>>", "<Control-s>"),
+    (None, None, None, "<<save-window-as-file>>", "<Control-w>"),
+    (None, None, None, "<<save-copy-of-window-as-file>>", "<Meta-w>"),
 
-    ("<<find>>", "<Control-f>"),
-    ("<<find-next>>", "<F3>"),
-    ("<<find-same>>", "<Control-F3>"),
-    ("<<goto-line>>", "<Alt-g>", "<Meta-g>"),
+    (None, None, None, "<<find>>", "<Control-f>"),
+    (None, None, None, "<<find-next>>", "<F3>"),
+    (None, None, None, "<<find-same>>", "<Control-F3>"),
+    (None, None, None, "<<goto-line>>", "<Alt-g>", "<Meta-g>"),
 
-    ("<<undo>>", "<Control-z>"),
-    ("<<redo>>", "<Control-y>"),
-    ("<<dump-undo-state>>", "<Control-backslash>"),
+    (None, None, None, "<<undo>>", "<Control-z>"),
+    (None, None, None, "<<redo>>", "<Control-y>"),
+    (None, None, None, "<<dump-undo-state>>", "<Control-backslash>"),
 ]
 
 emacs_bindings = [
-    ("<<beginning-of-line>>", "<Control-a>", "<Home>"),
-    ("<<center-insert>>", "<Control-l>"),
 
-    ("<<expand-word>>", "<Meta-slash>", "<Alt-slash>"),
+    # File menu
+
+    ("file", "New window", "C-x C-n",
+     "<<open-new-window>>", "<Control-x><Control-n>"),
+    ("file", "Open...", "C-x C-f",
+     "<<open-window-from-file>>", "<Control-x><Control-f>"),
+    ("file", None, None),
+
+    ("file", "Save", "C-x C-s",
+     "<<save-window>>", "<Control-x><Control-s>"),
+    ("file", "Save As...", "C-x C-w",
+     "<<save-window-as-file>>", "<Control-x><Control-w>"),
+    ("file", "Save Copy As...", "C-x w",
+     "<<save-copy-of-window-as-file>>", "<Control-x><w>"),
+    ("file", None, None),
+
+    ("file", "Close", "C-x C-0",
+     "<<close-window>>", "<Control-x><Control-0>"),
+    ("file", "Exit", "C-x C-c",
+     "<<close-all-windows>>", "<Control-x><Control-c>"),
+
+    # Edit menu
+
+    ("edit", "Undo", "C-z", "<<undo>>", "<Control-z>"),
+    ("edit", "Redo", "Alt-z", "<<redo>>", "<Alt-z>", "<Meta-z>"),
+    ("edit", None, None),
+
+    ("edit", "Cut", None, "<<Cut>>"),
+    ("edit", "Copy", None, "<<Copy>>"),
+    ("edit", "Paste", None, "<<Paste>>"),
+    ("edit", None, None),
+
+    ("edit", "Find...", "C-s",
+     "<<find>>", "<Control-u><Control-u><Control-s>"),
+    ("edit", "Find next", "C-u C-s",
+     "<<find-next>>", "<Control-u><Control-s>"),
+    ("edit", "Find same", "C-s", "<<find-same>>", "<Control-s>"),
+    ("edit", "Go to line", "Alt-g", "<<goto-line>>", "<Alt-g>", "<Meta-g>"),
+    ("edit", None, None),
+
+    ("edit", "Dedent region", "Ctrl-[", "<<dedent-region>>",
+     "<Meta-bracketleft>", "<Alt-bracketleft>", "<Control-bracketleft>"),
+    ("edit", "Indent region", "Ctrl-]", "<<indent-region>>",
+     "<Meta-bracketright>", "<Alt-bracketright>", "<Control-bracketright>"),
 
-    ("<<newline-and-indent>>", "<Key-Return>", "<KP_Enter>"),
-    ("<<plain-newline-and-indent>>", "<Control-j>"),
+    ("edit", "Comment out region", "Alt-3",
+     "<<comment-region>>", "<Meta-Key-3>", "<Alt-Key-3>"),
+    ("edit", "Uncomment region", "Alt-4",
+     "<<uncomment-region>>", "<Meta-Key-4>", "<Alt-Key-4>"),
 
-    ("<<interrupt-execution>>", "<Control-c>"),
-    ("<<end-of-file>>", "<Control-d>"),
+    # Not in any menu
 
-    ("<<dedent-region>>",
-     "<Meta-bracketleft>", "<Alt-bracketleft>", "<Control-bracketleft>"),
-    ("<<indent-region>>",
-     "<Meta-bracketright>", "<Alt-bracketright>", "<Control-bracketright>"),
+    (None, None, None, "<<beginning-of-line>>", "<Control-a>", "<Home>"),
+    (None, None, None, "<<center-insert>>", "<Control-l>"),
 
-    ("<<comment-region>>", "<Meta-Key-3>", "<Alt-Key-3>"),
-    ("<<uncomment-region>>", "<Meta-Key-4>", "<Alt-Key-4>"),
+    (None, None, None, "<<expand-word>>", "<Meta-slash>", "<Alt-slash>"),
 
-    ("<<history-previous>>", "<Meta-p>", "<Alt-p>"),
-    ("<<history-next>>", "<Meta-n>", "<Alt-n>"),
+    (None, None, None, "<<newline-and-indent>>", "<Key-Return>", "<KP_Enter>"),
+    (None, None, None, "<<plain-newline-and-indent>>", "<Control-j>"),
 
-    ("<<toggle-auto-coloring>>", "<Control-slash>"),
+    (None, None, None, "<<interrupt-execution>>", "<Control-c>"),
+    (None, None, None, "<<end-of-file>>", "<Control-d>"),
 
-    ("<<close-all-windows>>", "<Control-x><Control-c>"),
-    ("<<close-window>>", "<Control-x><Control-0>"),
-    ("<<open-new-window>>", "<Control-x><Control-n>"),
-    ("<<open-window-from-file>>", "<Control-x><Control-f>"),
-    ("<<save-window>>", "<Control-x><Control-s>"),
-    ("<<save-window-as-file>>", "<Control-x><Control-w>"),
-    ("<<save-copy-of-window-as-file>>", "<Control-x><w>"),
+    (None, None, None, "<<history-previous>>", "<Meta-p>", "<Alt-p>"),
+    (None, None, None, "<<history-next>>", "<Meta-n>", "<Alt-n>"),
 
-    ("<<find>>", "<Control-u><Control-u><Control-s>"),
-    ("<<find-next>>", "<Control-u><Control-s>"),
-    ("<<find-same>>", "<Control-s>"),
-    ("<<goto-line>>", "<Alt-g>", "<Meta-g>"),
+    (None, None, None, "<<toggle-auto-coloring>>", "<Control-slash>"),
 
-    ("<<undo>>", "<Control-z>"),
-    ("<<redo>>", "<Alt-z>", "<Meta-z>"),
-    ("<<dump-undo-state>>", "<Control-backslash>"),
+    (None, None, None, "<<dump-undo-state>>", "<Control-backslash>"),
 ]
 
 default_bindings = emacs_bindings
@@ -89,4 +127,29 @@ default_bindings = emacs_bindings
 def apply_bindings(text, bindings=default_bindings):
     event_add = text.event_add
     for args in bindings:
-        apply(event_add, args)
+        args = args[3:]
+        if args[1:]:
+            apply(event_add, args)
+
+def fill_menus(text, dict, bindings=default_bindings):
+    # Fill the menus for the given text widget.  The dict argument is
+    # a dictionary containing the menus, keyed by their lowercased name.
+    for args in bindings:
+        menu, label, accelerator = args[:3]
+        if not menu:
+            continue
+        menu = dict[menu]
+        if not menu:
+            continue
+        if accelerator is None:
+            accelerator = ""
+        args = args[3:]
+        if args:
+            def command(text=text, event=args[0]):
+                text.event_generate(event)
+            menu.add_command(label=label, accelerator=accelerator,
+                             command=command)
+        elif label or accelerator:
+            menu.add_command(label=label, accelerator=accelerator)
+        else:
+            menu.add_separator()