Add notification center delegate, some clean-ups.

example/hello.go

@@ -20,9 +20,6 @@ import (
 	"gioui.org/font/gofont"
 )
 
-//go:generate javac -target 1.8 -source 1.8 -bootclasspath $ANDROID_HOME/platforms/android-29/android.jar ../android/NotificationHelper.java
-//go:generate jar cf NotificationHelper.jar ../android/NotificationHelper.class
-
 func main() {
 	go func() {
 		w := app.NewWindow()

macos/notify_macos.go

@@ -11,8 +11,30 @@ package macos
 @import Foundation;
 @import UserNotifications;
 
+@interface UNDelegate : NSObject <UNUserNotificationCenterDelegate>
+{ }
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler;
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler;
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center openSettingsForNotification:(UNNotification *)notification;
+@end
+
+@implementation UNDelegate
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler {
+	NSLog(@"didReceiveNotificationResponse");
+}
+
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler {
+	NSLog(@"willPresentNotification");
+}
+
+- (void)userNotificationCenter:(UNUserNotificationCenter *)center openSettingsForNotification:(UNNotification *)notification {
+	NSLog(@"openSettingsForNotification");
+}
+@end
+
 UNUserNotificationCenter *nc;
 BOOL enabled;
+UNDelegate *del;
 
 void setup() {
 	@autoreleasepool {
@@ -26,8 +48,10 @@ void setup() {
 		NSLog(@"Bundle ID: %@", main.bundleIdentifier);
 		NSLog(@"Getting notification center");
 		nc = [UNUserNotificationCenter currentNotificationCenter];
+		del = [[UNDelegate alloc] init];
+		nc.delegate = del;
 		NSLog(@"Requesting authorization");
-		[nc requestAuthorizationWithOptions: UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert completionHandler: ^(BOOL granted, NSError *error){
+		[nc requestAuthorizationWithOptions: UNAuthorizationOptionBadge | UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionCriticalAlert completionHandler: ^(BOOL granted, NSError *error){
 			NSLog(@"Granted = %s", granted?"true":"false");
 			NSLog(@"Error = %@", error);
 			enabled = granted;
@@ -46,11 +70,12 @@ notify(char *id, char *title, char *content) {
 		UNMutableNotificationContent *note = [[UNMutableNotificationContent alloc] init];
 		note.title = [[NSString alloc] initWithUTF8String: title];
 		note.body = [[NSString alloc] initWithUTF8String: content];
-		NSString *identifier = [[NSString alloc] initWithUTF8String: id];
+		NSString *identifier = [[NSUUID UUID] UUIDString];
 
 		NSLog(@"Creating request");
 		UNNotificationRequest *req = [UNNotificationRequest requestWithIdentifier:identifier content: note trigger:nil];
-		ret = req.identifier; // FIXME: need to call retain?
+		ret = req.identifier;
+		[ret retain];
 		NSLog(@"Adding notification request");
 		[nc addNotificationRequest:req withCompletionHandler: ^(NSError *error) {
 			NSLog(@"added notification. Error: %@", error);

niotify_macos.go

@@ -1,3 +1,5 @@
+//+build macos
+
 package niotify
 
 import (
@@ -10,14 +12,13 @@ type macosManager struct {
 
 func newManager() (Manager, error) {
 	c := macos.NewNotificationChannel("Gio App")
-	
+
 	return Manager{
 		&macosManager{ channel: c },
 	}, nil
 }
 
 func (a *macosManager) CreateNotification(title, text string) (*Notification, error) {
-	
 	notification, err := a.channel.Send(title, text)
 	if err != nil {
 		return nil, err