Hi,
My application has several menus that get built dynamically, depending on user
settings. For instance, there is a "Styles" menu, which lists styles the user
has defined, and a "Script Elements" menu, which again, provides a list of
user-defined options that apply a certain format to a range of text.
However, it seems that dynamically-built menus have a problem when it comes to
keyboard shortcuts defined via the System Preferences - as in, the keyboard
shortcuts don't always work.
At first I thought the solution was obvious: I was building these menus as
needed, in the NSMenu delegate method, -menuNeedsUpdate: This method only gets
called when the user goes to look at the menu. So, if these dynamic menus were
only built in -menuNeedsUpdate:, then clearly the keyboard shortcuts defined in
System Preferences for any items in such menus would note work until after the
user had opened the menu at least once (thus populating it in -menuNeedsUpdate:
and allowing the defined shortcut actually to apply to something, because
before this the menu wouldn't have existed).
My solution was to build these menus whenever the user settings changed. So, if
the user added or deleted a style, the menu would get rebuilt, as well as
rebuilding it in -menuNeedsUpdate:. However, this still doesn't seem reliable.
When opening another window, the keyboard shortcuts defined via System
Preferences still don't operate in the new window until after the menu has been
opened - and yet NSLogging shows that the menu is getting built before this and
even seems to have a keyboard shortcut attached... Very strange.
So, my question: what is the best way of building menus dynamically whilst
ensuring that any keyboard shortcuts defined in System Preferences will catch
them and apply to them?
I am implementing -menuHasKeyEquivalent:... and returning NO. It seems that if
I don't implement this method, then keyboard shortcuts work for dynamically
built methods... But not implementing this method makes all the keyboard
shortcuts in my app work very, very slowly, so leaving it out isn't an option...
Thanks in advance for any help or pointers.
All the best,
Keith
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