Updating Pin Entry View and creating Connection Status View.

remoting/client/ios/app/client_connection_view_controller.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef REMOTING_CLIENT_IOS_APP_CLIENT_CONNECTION_VIEW_CONTROLLER_H_
+#define REMOTING_CLIENT_IOS_APP_CLIENT_CONNECTION_VIEW_CONTROLLER_H_
+
+#import <UIKit/UIKit.h>
+
+// This enumerated the differnt modes this Client Connection View can be in.
+typedef NS_ENUM(NSInteger, ClientConnectionViewState) {
+  ClientViewConnecting,
+  ClientViewPinPrompt,
+  ClientViewConnected,
+};
+
+// The host connection view controller delegate provides feedback for state
+// changes on Host Connection that the calling view should respond to.
+@protocol ClientConnectionViewControllerDelegate<NSObject>
+
+// Notifies the delegate the client is connected to the host.
+- (void)clientConnected;
+
+// Gets the current host name the client is attempting to connect to.
+- (NSString*)getConnectingHostName;
+
+@end
+
+// This is the view that shows the user feedback while the client connection is
+// being established. If requested the view can also display the pin entry view.
+// State communication for this view is handled by NSNotifications, it listens
+// to kHostSessionStatusChanged events on the default NSNotificationCenter.
+// Internally the notification is tied to [self setState] so view setup will
+// work the same way if state is set directly.
+@interface ClientConnectionViewController : UIViewController
+
+// Setting state will change the view
+@property(nonatomic, assign) ClientConnectionViewState state;
+
+// This delegate is used to ask for Host Name and to notify when the connection
+// has been established.
+@property(weak, nonatomic) id<ClientConnectionViewControllerDelegate> delegate;
+
+@end
+
+#endif  // REMOTING_CLIENT_IOS_APP_CLIENT_CONNECTION_VIEW_CONTROLLER_H_