I want to write a simple menubar app for Mac OS X. The user will only want to use that app when Safari is opened. To not clutter the menubar unnecessarily, I want to hide and show the menubar icon depending on whether Safari is open or not.
Is there maybe some notification that my app could register for? The only workaround I can imagine is poll the running processes and see if Safari is launched, but that doesn't seem to be an elegant way to solve my problem...
NSWorkspaceDidLaunchApplicationNotification and NSWorkspaceDidTerminateApplicationNotification. (There are equivalent Carbon Events.)