react-native/React/Base/RCTRootViewDelegate.h

31 lines
965 B
Objective-C

/**
* 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>
@class RCTRootView;
@protocol RCTRootViewDelegate <NSObject>
/**
* Called after the root view's intrinsic content size is changed.
*
* The method is not called when both old size and new size have
* a dimension that equals to zero.
*
* The delegate can use this callback to appropriately resize
* the root view's frame to fit the new intrinsic content view size,
* but usually it is not necessary because the root view will also call
* `setNeedsLayout` for its superview which in its turn will trigger relayout.
*
* The new intrinsic content size is available via the `intrinsicContentSize`
* propery of the root view. The view will not resize itself.
*/
- (void)rootViewDidChangeIntrinsicSize:(RCTRootView *)rootView;
@end