// Constants
typedef enum {
    kUIAnimationCurveLinear,
    kUIAnimationCurveEaseIn,
    kUIAnimationCurveEaseOut,
    kUIAnimationCurveEaseInEaseOut
} UIAnimationCurve;


@interface UIAnimation : NSObject
{
}

// Creating animations
- (id)initWithTarget:(id)target;

// Properties
- (id)target;
- (void)setDelegate:(id)delegate;
- (id)delegate;
- (void)setAction:(SEL)action;
- (SEL)action;
- (void)setAnimationCurve:(UIAnimationCurve)animationCurve;
- (float)progressForFraction:(float)fraction;

// Implemented by subclasses
- (void)setProgress:(float)progress;

// Controlling animations
- (void)stopAnimation;

@end


// UIAnimator controls global animations
@interface UIAnimator : NSObject
{
}

+ (id)sharedAnimator;

+ (void)disableAnimation;
+ (void)enableAnimation;

- (void)addAnimation:(UIAnimation *)animation withDuration:(double)duration start:(BOOL)start;
- (void)addAnimations:(NSArray *)animations withDuration:(double)duration start:(BOOL)start;
- (void)removeAnimationsForTarget:(id)target;
- (void)removeAnimationsForTarget:(id)target ofKind:(Class)classOfTarget;

- (void)startAnimation:(UIAnimation *)animation;
- (void)stopAnimation:(UIAnimation *)animation;

- (float)fractionForAnimation:(UIAnimation *)animation;

@end


// Provided UIAnimation subclasses

@interface UIAlphaAnimation : UIAnimation
{
}

- (void)setStartAlpha:(float)alpha;
- (void)setEndAlpha:(float)alpha;

- (float)alphaForFraction:(float)fraction;

@end

@interface UIFrameAnimation : UIAnimation
{
}

- (void)setStartFrame:(CGRect)frame;
- (void)setEndFrame:(CGRect)frame;

- (CGRect)endFrame;

@end

@interface UIRotationAnimation : UIAnimation
{
}

- (void)setStartRotationAngle:(float)angle;
- (void)setEndRotationAngle:(float)angle;

@end

@interface UIScrollAnimation : UIAnimation
{
}

- (void)setStartPoint:(CGPoint)startPoint;
- (void)setEndPoint:(CGPoint)endPoint;

@end

@interface UITransformAnimation : UIAnimation
{
}

- (void)setStartTransform:(CGAffineTransform)transform;
- (void)setEndTransform:(CGAffineTransform)transform;

- (CGAffineTransform)transformForFraction:(float)fraction;

@end

@interface UIZoomAnimation : UIAnimation
{
}

+ (float)defaultDuration;

+ (id)zoomAnimationForTarget:(id)target endScale:(float)scale endScrollPoint:(CGPoint)point;
+ (id)zoomAnimationForTarget:(id)target focusRect:(CGRect)focusRect deviceBoundaryRect:(CGRect)deviceBoundaryRect scale:(float)scale;

- (void)setEndScale:(float)scale;
- (void)setStartScale:(float)scale;
- (void)setEndScrollPoint:(CGPoint)point;
- (void)setStartScrollPoint:(CGPoint)point;

@end

@interface UIView (Animation)

+ (void)beginAnimations:(NSArray *)animations;
+ (void)endAnimations;

+ (void)enableAnimation;
+ (void)disableAnimation;

+ (void)setAnimationAutoreverses:(BOOL)autoreverses;
+ (void)setAnimationCurve:(UIAnimationCurve)animationCurve;
+ (void)setAnimationDelay:(double)startDelay;
+ (void)setAnimationDelegate:(id)delegate;
+ (void)setAnimationDuration:(double)duration;
+ (void)setAnimationFrameInterval:(double)minimumTimeIntervalBetweenFrames;
+ (void)setAnimationFromCurrentState:(BOOL)shouldAnimateFromCurrentState;
+ (void)setAnimationPosition:(CGPoint)position;
+ (void)setAnimationStartTime:(double)startTime;
+ (void)setAnimationRepeatCount:(float)repeatCount;
+ (void)setAnimationRoundsToInteger:(BOOL)shouldRoundToInteger;
+ (void)setAnimationWillStartSelector:(SEL)willStartSelector;
+ (void)setAnimationDidStopSelector:(SEL)willEndSelector;

- (void)addAnimation:(UIAnimation *)animation forKey:(NSString *)key;

@end