feat(ios)!: emit CAPBridgeViewController notifications (#8211)

Author: jcesarmobile

ios/Capacitor/Capacitor/CAPBridgeViewController.swift

@@ -27,19 +27,7 @@ import Cordova
         return false
     }()
 
-    // TODO: Remove in Capacitor 8 after moving status bar plugin extensions code
-    @objc func handleViewDidAppear() {
-        if bridge?.config.hasInitialFocus ?? true {
-            self.webView?.becomeFirstResponder()
-        }
-    }
-
-    deinit {
-        NotificationCenter.default.removeObserver(self)
-    }
-
     override public final func loadView() {
-        NotificationCenter.default.addObserver(self, selector: #selector(self.handleViewDidAppear), name: Notification.Name(rawValue: "CapacitorViewDidAppear"), object: nil)
         // load the configuration and set the logging flag
         let configDescriptor = instanceDescriptor()
         let configuration = InstanceConfiguration(with: configDescriptor, isDebug: CapacitorBridge.isDevEnvironment)
@@ -76,11 +64,17 @@ import Cordova
 
     override open func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
+        NotificationCenter.default.post(Notification(name: .capacitorViewDidAppear))
         if bridge?.config.hasInitialFocus ?? true {
             self.webView?.becomeFirstResponder()
         }
     }
 
+    override open func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
+        super.viewWillTransition(to: size, with: coordinator)
+        NotificationCenter.default.post(Notification(name: .capacitorViewWillTransition))
+    }
+
     override open func canPerformUnwindSegueAction(_ action: Selector, from fromViewController: UIViewController, withSender sender: Any) -> Bool {
         return false
     }

ios/Capacitor/Capacitor/CAPNotifications.swift

@@ -16,6 +16,8 @@ extension Notification.Name {
     public static let capacitorDecidePolicyForNavigationAction =
         Notification.Name(rawValue: "CapacitorDecidePolicyForNavigationActionNotification")
     public static let capacitorStatusBarTapped = Notification.Name(rawValue: "CapacitorStatusBarTappedNotification")
+    public static let capacitorViewDidAppear = Notification.Name(rawValue: "CapacitorViewDidAppear")
+    public static let capacitorViewWillTransition = Notification.Name(rawValue: "CapacitorViewWillTransition")
 }
 
 @objc extension NSNotification {
@@ -26,6 +28,8 @@ extension Notification.Name {
     public static let capacitorDidFailToRegisterForRemoteNotifications = Notification.Name.capacitorDidFailToRegisterForRemoteNotifications
     public static let capacitorDecidePolicyForNavigationAction = Notification.Name.capacitorDecidePolicyForNavigationAction
     public static let capacitorStatusBarTapped = Notification.Name.capacitorStatusBarTapped
+    public static let capacitorViewDidAppear = Notification.Name.capacitorViewDidAppear
+    public static let capacitorViewWillTransition = Notification.Name.capacitorViewWillTransition
 }
 
 /**