Adapt code from AquaEmacs to handle occasional blank menus.

* nsmenu.m (trackingMenu): New variable.
(NSMenuDidBeginTrackingNotification): Declare if OSX < 10.5 and
NS_IMPL_COCOA.
(trackingNotification): New method (from AquaEmacs).
(menuNeedsUpdate): Expand comment and return if trackingMenu is 0,
from AquaEmacs.
(syms_of_nsmenu): Set trackingMenu to 1 if not NS_IMPL_COCOA.

* nsterm.m (ns_term_init): Subscribe for notifications
NSMenuDidBeginTrackingNotification and NSMenuDidEndTrackingNotification
to method trackingNotification in EmacsMenu.

Fixes: debbugs:7030

1 files changed, 12 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 610079fe321..14eb35bdc1c 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,17 @@
 2011-12-18  Jan Djärv  <jan.h.d@swipnet.se>
 
+        * nsterm.m (ns_term_init): Subscribe for notifications
+        NSMenuDidBeginTrackingNotification and NSMenuDidEndTrackingNotification
+        to method trackingNotification in EmacsMenu.
+
+        * nsmenu.m (trackingMenu): New variable.
+        (NSMenuDidBeginTrackingNotification): Declare if OSX < 10.5 and
+        NS_IMPL_COCOA.
+        (trackingNotification): New method (from AquaEmacs).
+        (menuNeedsUpdate): Expand comment and return if trackingMenu is 0,
+        from AquaEmacs (Bug#7030).
+        (syms_of_nsmenu): Set trackingMenu to 1 if not NS_IMPL_COCOA.
+
         * nsselect.m (CUT_BUFFER_SUPPORT): Remove define.
         (symbol_to_nsstring): Fix indentation.
         (ns_symbol_to_pb): New function.