Introducting RCTTextInput, base class for both text inputs

Summary: Some basic same to both classes functionality was moved to base class, and it is just a beginning.

Reviewed By: mmmulani

Differential Revision: D5144429

fbshipit-source-id: 56c6400d46f4cf3c0058fe936cba524dd5d490df

Libraries/Text/RCTTextInput.h

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <UIKit/UIKit.h>
+
+#import <RCTText/RCTBackedTextInputViewProtocol.h>
+#import <React/RCTView.h>
+
+@class RCTBridge;
+@class RCTEventDispatcher;
+
+@interface RCTTextInput : RCTView {
+@protected
+  RCTBridge *_bridge;
+  RCTEventDispatcher *_eventDispatcher;
+}
+
+- (instancetype)initWithBridge:(RCTBridge *)bridge NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init NS_UNAVAILABLE;
+- (instancetype)initWithCoder:(NSCoder *)decoder NS_UNAVAILABLE;
+- (instancetype)initWithFrame:(CGRect)frame NS_UNAVAILABLE;
+
+@property (nonatomic, readonly) UIView<RCTBackedTextInputViewProtocol> *backedTextInputView;
+
+@end