Check if MacOS app has assistive access and request if it hasn't

EnsoAX.m

- (BOOL)assistiveEnabled{
	NSDictionary *options = @{(__bridge id)kAXTrustedCheckOptionPrompt: @NO};
	BOOL aen = AXIsProcessTrustedWithOptions((__bridge CFDictionaryRef)options);
	return aen;
}

- (void)handleAssistiveAccess{
	if (![self assistiveEnabled]) {
		NSAlert *alert = [[NSAlert alloc] init];
		[alert addButtonWithTitle:@"Open preference panel"];
		[alert addButtonWithTitle:@"Cancel"];
		
		[alert setMessageText:@"Allow assistive access?"];
		[alert setInformativeText:@"For Enso to work, you need to tell your Mac that you want to allow Enso to control the display of notifications.\n\nClick the [Open preference pane] button and drag the Enso app into the area with the apps that are allowed to 'control your computer'.\n\nNote: You might first have to unlock the preference pane by clicking the lock at the bottom of the pane.\n\nEnso only changes the display of notifications! You can read more about what enso does at http://enso.magnatron.nl/#privacy"];

		if ([alert runModal] == NSAlertFirstButtonReturn) {
			alert = nil;
			NSString *urlString = @"x-apple.systempreferences:com.apple.preference.security?Privacy_Accessibility";
			[[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:urlString]];
			[[NSDistributedNotificationCenter defaultCenter] addObserver:self selector:@selector(dndAvailInabit:) name:@"com.apple.accessibility.api" object:nil];
		}else{
			alert = nil;
			**Do some other stuff
		}
	}
}