UIView+SLKAdditions.h

//
//  SlackTextViewController
//  https://github.com/slackhq/SlackTextViewController
//
//  Copyright 2014-2016 Slack Technologies, Inc.
//  Licence: MIT-Licence
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

/** @name UIView additional features used for SlackTextViewController. */
@interface UIView (SLKAdditions)

/**
 Animates the view's constraints by calling layoutIfNeeded.
 
 @param bounce YES if the animation should use spring damping and velocity to give a bouncy effect to animations.
 @param options A mask of options indicating how you want to perform the animations.
 @param animations An additional block for custom animations.
 */
- (void)slk_animateLayoutIfNeededWithBounce:(BOOL)bounce options:(UIViewAnimationOptions)options animations:(void (^ __nullable)(void))animations;

- (void)slk_animateLayoutIfNeededWithBounce:(BOOL)bounce options:(UIViewAnimationOptions)options animations:(void (^ __nullable)(void))animations completion:(void (^ __nullable)(BOOL finished))completion;

/**
 Animates the view's constraints by calling layoutIfNeeded.
 
 @param duration The total duration of the animations, measured in seconds.
 @param bounce YES if the animation should use spring damping and velocity to give a bouncy effect to animations.
 @param options A mask of options indicating how you want to perform the animations.
 @param animations An additional block for custom animations.
 */
- (void)slk_animateLayoutIfNeededWithDuration:(NSTimeInterval)duration bounce:(BOOL)bounce options:(UIViewAnimationOptions)options animations:(void (^ __nullable)(void))animations completion:(void (^ __nullable)(BOOL finished))completion;

/**
 Returns the view constraints matching a specific layout attribute (top, bottom, left, right, leading, trailing, etc.)
 
 @param attribute The layout attribute to use for searching.
 @return An array of matching constraints.
 */
- (nullable NSArray *)slk_constraintsForAttribute:(NSLayoutAttribute)attribute;

/**
 Returns a layout constraint matching a specific layout attribute and relationship between 2 items, first and second items.
 
 @param attribute The layout attribute to use for searching.
 @param first The first item in the relationship.
 @param second The second item in the relationship.
 @return A layout constraint.
 */
- (nullable NSLayoutConstraint *)slk_constraintForAttribute:(NSLayoutAttribute)attribute firstItem:(id __nullable)first secondItem:(id __nullable)second;

@end

NS_ASSUME_NONNULL_END