text: /*
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  
  #import <Foundation/Foundation.h>
  
  #import <React/RCTSurfaceProtocol.h>
  #import <React/RCTSurfaceStage.h>
  
  NS_ASSUME_NONNULL_BEGIN
  
  @class RCTBridge;
  @class RCTSurfaceView;
  @protocol RCTSurfaceDelegate;
  
  /**
   * RCTSurface instance represents React Native-powered piece of a user interface
   * which can be a full-screen app, separate modal view controller,
   * or even small widget.
   * It is called "Surface".
   *
   * The RCTSurface instance is completely thread-safe by design;
   * it can be created on any thread, and any its method can be called from
   * any thread (if the opposite is not mentioned explicitly).
   *
   * The primary goals of the RCTSurface are:
   *  * ability to measure and layout the surface in a thread-safe
   *    and synchronous manner;
   *  * ability to create a UIView instance on demand (later);
   *  * ability to communicate the current stage of the surface granularly.
   */
  @interface RCTSurface : NSObject <RCTSurfaceProtocol>
  
  - (instancetype)initWithBridge:(RCTBridge *)bridge
                      moduleName:(NSString *)moduleName
               initialProperties:(NSDictionary *)initialProperties;
  
  #pragma mark - Layout: Setting the size constrains
  
  /**
   * Previously set `minimumSize` layout constraint.
   * Defaults to `{0, 0}`.
   */
  @property (atomic, assign, readonly) CGSize minimumSize;
  
  /**
   * Previously set `maximumSize` layout constraint.
   * Defaults to `{CGFLOAT_MAX, CGFLOAT_MAX}`.
   */
  @property (atomic, assign, readonly) CGSize maximumSize;
  
  /**
   * Simple shortcut to `-[RCTSurface setMinimumSize:size maximumSize:size]`.
   */
  - (void)setSize:(CGSize)size;
  
  #pragma mark - Synchronous waiting
  
  /**
   * Synchronously blocks the current thread up to given `timeout` until
   * the Surface reaches `stage`.
   * Limitations:
   *  - Do nothing, if called on `UIManager` queue.
   *  - Calling on the main queue with `RCTSurfaceStageSurfaceDidInitialMounting`
   *    stage temporary is not supported; in this case the stage will be
   *    downgraded to `RCTSurfaceStageSurfaceDidInitialLayout`.
   */
  - (BOOL)synchronouslyWaitForStage:(RCTSurfaceStage)stage timeout:(NSTimeInterval)timeout;
  
  #pragma mark - Mounting/Unmounting of React components
  
  /**
   * Mount the React component specified by the given moduleName. This is typically
   * calling runApplication.js from the native side.
   */
  - (void)mountReactComponentWithBridge:(RCTBridge *)bridge
                             moduleName:(NSString *)moduleName
                                 params:(NSDictionary *)params;
  
  /**
   * Unmount the React component specified by the given rootViewTag, called from native.
   */
  - (void)unmountReactComponentWithBridge:(RCTBridge *)bridge rootViewTag:(NSNumber *)rootViewTag;
  
  @end
  
  NS_ASSUME_NONNULL_END
  