// Copyright 2020-present the Material Components for iOS authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#import <UIKit/UIKit.h>

@class MDCFlexibleHeaderView;
@class MDCFlexibleHeaderViewController;

API_DEPRECATED_BEGIN("Use a branded UINavigationController instead.", ios(12, API_TO_BE_DEPRECATED))

/**
 An object may conform to this protocol in order to receive layout change events caused by a
 MDCFlexibleHeaderView.
 */
NS_SWIFT_UI_ACTOR
@protocol MDCFlexibleHeaderViewLayoutDelegate <NSObject>
@required

/**
 Informs the receiver that the flexible header view's frame has changed.

 The receiver should use the MDCFlexibleHeader scrollPhase APIs in order to react to the frame
 changes.
 */
- (void)flexibleHeaderViewController:
            (nonnull MDCFlexibleHeaderViewController *)flexibleHeaderViewController
    flexibleHeaderViewFrameDidChange:(nonnull MDCFlexibleHeaderView *)flexibleHeaderView;

@end

API_DEPRECATED_END