text: //
  //  MZTransition.h
  //  MZFormSheetController
  //
  //  Created by Michał Zaborowski on 21.12.2013.
  //  Copyright (c) 2013 Michał Zaborowski. All rights reserved.
  //
  //  Permission is hereby granted, free of charge, to any person obtaining a copy
  //  of this software and associated documentation files (the "Software"), to
  //  deal
  //  in the Software without restriction, including without limitation the rights
  //  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  //  copies of the Software, and to permit persons to whom the Software is
  //  furnished to do so, subject to the following conditions:
  //
  //  The above copyright notice and this permission notice shall be included in
  //  all copies or substantial portions of the Software.
  //
  //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  //  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  //  FROM,
  //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  //  THE SOFTWARE.
  
  @import UIKit;
  
  extern NSString *const __nonnull MZTransitionExceptionMethodNotImplemented;
  
  typedef void (^MZTransitionCompletionHandler)();
  
  @class MZFormSheetPresentationViewController;
  
  typedef NS_ENUM(NSInteger, MZFormSheetPresentationTransitionStyle) {
    MZFormSheetPresentationTransitionStyleSlideFromTop = 0,
    MZFormSheetPresentationTransitionStyleSlideFromBottom,
    MZFormSheetPresentationTransitionStyleSlideFromLeft,
    MZFormSheetPresentationTransitionStyleSlideFromRight,
    MZFormSheetPresentationTransitionStyleSlideAndBounceFromTop,
    MZFormSheetPresentationTransitionStyleSlideAndBounceFromBottom,
    MZFormSheetPresentationTransitionStyleSlideAndBounceFromLeft,
    MZFormSheetPresentationTransitionStyleSlideAndBounceFromRight,
    MZFormSheetPresentationTransitionStyleFade,
    MZFormSheetPresentationTransitionStyleBounce,
    MZFormSheetPresentationTransitionStyleDropDown,
    MZFormSheetPresentationTransitionStyleCustom,
    MZFormSheetPresentationTransitionStyleNone,
  };
  
  @protocol MZFormSheetPresentationViewControllerTransitionProtocol <NSObject>
  @required
  /**
   Subclasses must implement to add custom transition animation.
   When animation is finished you must call super method or completionHandler to
   keep view life cycle.
   */
  - (void)entryFormSheetControllerTransition:(nonnull UIViewController *)formSheetController
                           completionHandler:(nonnull MZTransitionCompletionHandler)completionHandler;
  
  - (void)exitFormSheetControllerTransition:(nonnull UIViewController *)formSheetController
                          completionHandler:(nonnull MZTransitionCompletionHandler)completionHandler;
  
  @end
  
  @interface MZTransition
      : NSObject <MZFormSheetPresentationViewControllerTransitionProtocol>
  
  /**
   *  Register custom transition animation style.
   *  You need to setup transitionStyle to MZFormSheetTransitionStyleCustom.
   *
   *  @param transitionClass Custom transition class.
   *  @param transitionStyle The transition style to use when presenting the receiver.
   */
  + (void)registerTransitionClass:(Class __nonnull)transitionClass forTransitionStyle:(MZFormSheetPresentationTransitionStyle)transitionStyle;
  
  + (nullable Class)classForTransitionStyle:(MZFormSheetPresentationTransitionStyle)transitionStyle;
  
  + (NSDictionary * _Nonnull)sharedTransitionClasses;
  
  @end
  