Use NSSharingService from a text only NSToolbar

gistfile1.m

// In toolbarWillAddItem: create a new NSMenu
// set the delegate and add the menu as part of a NSMenuItem as menuFormRepresentation


- (void)menuNeedsUpdate:(NSMenu *)menu
{
    // clear out in case we can no longer provide this service
    [menu removeAllItems];

    NSURL *fileURL = [self.document fileURL];
    if (!fileURL) return;

    // rebuild the menu
    NSArray *sharingService = [NSSharingService sharingServicesForItems:[NSArray arrayWithObject:fileURL]];
    for (NSSharingService *currentService in sharingService) {
        NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:currentService.title action:@selector(selectedSharingServiceFromMenuItem:) keyEquivalent:@""];
        item.image = currentService.image;
        item.representedObject = currentService;
        [menu addItem:item];
        [item release];
    }
}

- (void)selectedSharingServiceFromMenuItem:(NSMenuItem *)menuItem
{
    NSURL *fileURL = [self.document fileURL];
    if (!fileURL) return;

    NSSharingService *service = menuItem.representedObject;
    if (![service isKindOfClass:[NSSharingService class]]) return; // just to make sure…
    
    service.delegate = self;
    [service performWithItems:@[fileURL]];
}