- (void)applicationDidFinishLaunching:(NSNotification *)aNotification{
// Insert code here to initialize your application
NSStatusItem * statusItem = [[[NSStatusBar systemStatusBar] statusItemWithLength:110] retain];
[statusItem setTitle:@"Test"];
[statusItem setEnabled:YES];
[statusItem setHighlightMode:YES];
[statusItem setTarget:self];
[statusItem setAction:@selector(showPopover:)];
}
- (void) showPopover:(id)sender {
NSLog(@"sender is: %@", sender);
RSTestPopoverViewController * viewController = [[RSTestPopoverViewController alloc] initWithNibName:@"RSTestPopoverViewController" bundle:nil];
NSPopover * popover = [NSPopover new];
popover.contentViewController = viewController;
[popover showRelativeToRect:NSZeroRect ofView:(NSView *)sender preferredEdge:NSMinYEdge];
}
The parameter of popover callback is an instance of NSStatusBarButton class. Here is the output in my console.
2013-01-20 23:08:36.602 TestMacWindow[1190:303] sender is: <NSStatusBarButton: 0x101917d10>