Added delegate forwarding for didReceiveLocalNotification and willPresentNotification (#6858)

shell/platform/darwin/ios/framework/Headers/FlutterPlugin.h

@@ -6,6 +6,7 @@
 #define FLUTTER_FLUTTERPLUGIN_H_
 
 #import <UIKit/UIKit.h>
+#import <UserNotifications/UNUserNotificationCenter.h>
 
 #include "FlutterBinaryMessenger.h"
 #include "FlutterChannels.h"
@@ -116,6 +117,21 @@ NS_ASSUME_NONNULL_BEGIN
     didReceiveRemoteNotification:(NSDictionary*)userInfo
           fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler;
 
+/**
+ * Calls all plugins registered for `UIApplicationDelegate` callbacks.
+ */
+- (void)application:(UIApplication*)application
+    didReceiveLocalNotification:(UILocalNotification*)notification;
+
+/**
+ * Calls all plugins registered for `UNUserNotificationCenterDelegate` callbacks.
+ */
+- (void)userNotificationCenter:(UNUserNotificationCenter*)center
+       willPresentNotification:(UNNotification*)notification
+         withCompletionHandler:
+             (void (^)(UNNotificationPresentationOptions options))completionHandler
+    API_AVAILABLE(ios(10));
+
 /**
  * Called if this plugin has been registered for `UIApplicationDelegate` callbacks.
  *

shell/platform/darwin/ios/framework/Headers/FlutterPluginAppLifeCycleDelegate.h

@@ -85,6 +85,21 @@ FLUTTER_EXPORT
     didReceiveRemoteNotification:(NSDictionary*)userInfo
           fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler;
 
+/**
+ * Calls all plugins registered for `UIApplicationDelegate` callbacks.
+ */
+- (void)application:(UIApplication*)application
+    didReceiveLocalNotification:(UILocalNotification*)notification;
+
+/**
+ * Calls all plugins registered for `UNUserNotificationCenterDelegate` callbacks.
+ */
+- (void)userNotificationCenter:(UNUserNotificationCenter*)center
+       willPresentNotification:(UNNotification*)notification
+         withCompletionHandler:
+             (void (^)(UNNotificationPresentationOptions options))completionHandler
+    API_AVAILABLE(ios(10));
+
 /**
  * Calls all plugins registered for `UIApplicationDelegate` callbacks in order of registration until
  * some plugin handles the request.

shell/platform/darwin/ios/framework/Source/FlutterAppDelegate.mm

@@ -94,6 +94,23 @@
             fetchCompletionHandler:completionHandler];
 }
 
+- (void)application:(UIApplication*)application
+    didReceiveLocalNotification:(UILocalNotification*)notification {
+  [_lifeCycleDelegate application:application didReceiveLocalNotification:notification];
+}
+
+- (void)userNotificationCenter:(UNUserNotificationCenter*)center
+       willPresentNotification:(UNNotification*)notification
+         withCompletionHandler:
+             (void (^)(UNNotificationPresentationOptions options))completionHandler
+    API_AVAILABLE(ios(10)) {
+  if (@available(iOS 10.0, *)) {
+    [_lifeCycleDelegate userNotificationCenter:center
+                       willPresentNotification:notification
+                         withCompletionHandler:completionHandler];
+  }
+}
+
 - (BOOL)application:(UIApplication*)application
             openURL:(NSURL*)url
             options:(NSDictionary<UIApplicationOpenURLOptionsKey, id>*)options {

shell/platform/darwin/ios/framework/Source/FlutterPluginAppLifeCycleDelegate.mm

@@ -202,6 +202,36 @@ static BOOL isPowerOfTwo(NSUInteger x) {
   }
 }
 
+- (void)application:(UIApplication*)application
+    didReceiveLocalNotification:(UILocalNotification*)notification {
+  for (id<FlutterPlugin> plugin in _pluginDelegates) {
+    if (!plugin) {
+      continue;
+    }
+    if ([plugin respondsToSelector:_cmd]) {
+      [plugin application:application didReceiveLocalNotification:notification];
+    }
+  }
+}
+
+- (void)userNotificationCenter:(UNUserNotificationCenter*)center
+       willPresentNotification:(UNNotification*)notification
+         withCompletionHandler:
+             (void (^)(UNNotificationPresentationOptions options))completionHandler {
+  if (@available(iOS 10.0, *)) {
+    for (id<FlutterPlugin> plugin in _pluginDelegates) {
+      if (!plugin) {
+        continue;
+      }
+      if ([plugin respondsToSelector:_cmd]) {
+        [plugin userNotificationCenter:center
+               willPresentNotification:notification
+                 withCompletionHandler:completionHandler];
+      }
+    }
+  }
+}
+
 - (BOOL)application:(UIApplication*)application
             openURL:(NSURL*)url
             options:(NSDictionary<UIApplicationOpenURLOptionsKey, id>*)options {