Add iOS option to lock portrait mode in browsing

iOS/Orientation.swift

@@ -0,0 +1,31 @@
+import CoreMotion
+import Defaults
+import Logging
+import UIKit
+
+struct Orientation {
+    static var logger = Logger(label: "stream.yattee.orientation")
+
+    static func lockOrientation(_ orientation: UIInterfaceOrientationMask) {
+        if let delegate = AppDelegate.instance {
+            delegate.orientationLock = orientation
+
+            let orientationString = orientation == .portrait ? "portrait" : orientation == .landscapeLeft ? "landscapeLeft" :
+                orientation == .landscapeRight ? "landscapeRight" : orientation == .portraitUpsideDown ? "portraitUpsideDown" :
+                orientation == .landscape ? "landscape" : orientation == .all ? "all" : "allButUpsideDown"
+
+            logger.info("locking \(orientationString)")
+        }
+    }
+
+    static func lockOrientation(_ orientation: UIInterfaceOrientationMask, andRotateTo rotateOrientation: UIInterfaceOrientation? = nil) {
+        lockOrientation(orientation)
+
+        guard !rotateOrientation.isNil else {
+            return
+        }
+
+        UIDevice.current.setValue(rotateOrientation!.rawValue, forKey: "orientation")
+        UINavigationController.attemptRotationToDeviceOrientation()
+    }
+}