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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // ILChoreography.h | ||
| // Activity | ||
| // | ||
| // Created by ∞ on 02/10/11. | ||
| // Copyright (c) 2011 __MyCompanyName__. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| #if TARGET_OS_IPHONE | ||
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| #import "ILActivity.h" | ||
| #import <UIKit/UIKit.h> | ||
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| /* Choreographies are activities that handle a single- or multi-step UIKit animation. When started, they execute all animation and completion blocks in a UIView animation block. | ||
| Since animation is complex, subclasses can override the -startAnimating method to set up the animation themselves. (This method is called by ILChoreography's -main.) Subclasses can then use the -invokePreparationBlocks, -invokeAnimationBlocks and -invokeCompletionBlocksWithResult: methods to invoke any added animation or completion blocks. You can also perform multiple, chained or parallel animations. No matter what you do, it's this method's responsibility to call -end after all blocks have been invoked. | ||
| The default implementation runs animation blocks with the following settings: a duration of 0.25; ease-in-out easing; default options otherwise. The default implementation invokes completion blocks and calls -end when this animation ends. | ||
| Choreographies may be cancelled like any other activity. However, the default implementation does NOT stop animations right away, as it overrides -cancel to do nothing. To implement cancelling in a subclass, override -cancel entirely without calling super. | ||
| */ | ||
| @interface ILChoreography : ILActivity | ||
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| // All preparation blocks are invoked as the choreography begins, outside of an animation block. | ||
| // All animation blocks are invoked within the UIView animation context. | ||
| // All completion blocks are invoked as part of the UIView animation completion block, just before the activity ends. | ||
| - (void) addAnimationWithBlocksForPreparing:(void(^)()) preparation animating:(void(^)()) animations completing:(void(^)(BOOL)) completion; | ||
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| // Subclasses only. | ||
| - (void) cancel; // overridden to do nothing. overridable. | ||
| - (void) startAnimating; // overridable. | ||
| - (void) invokeAnimationBlocks; // in an arbitrary order | ||
| - (void) invokePreparationBlocks; // in an arbitrary order | ||
| - (void) invokeCompletionBlocksWithResult:(BOOL) finished; // in an arbitrary order | ||
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| @end | ||
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| #endif |
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| // | ||
| // ILChoreography.m | ||
| // Activity | ||
| // | ||
| // Created by ∞ on 02/10/11. | ||
| // Copyright (c) 2011 __MyCompanyName__. All rights reserved. | ||
| // | ||
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| #import "ILChoreography.h" | ||
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| #if TARGET_OS_IPHONE | ||
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| @implementation ILChoreography { | ||
| NSMutableSet* animationBlocks, * completionBlocks, * preparationBlocks; | ||
| } | ||
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| - (id)init; | ||
| { | ||
| self = [super init]; | ||
| if (self) { | ||
| animationBlocks = [NSMutableSet new]; | ||
| completionBlocks = [NSMutableSet new]; | ||
| preparationBlocks = [NSMutableSet new]; | ||
| } | ||
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| return self; | ||
| } | ||
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| - (void)dealloc; | ||
| { | ||
| [animationBlocks release]; | ||
| [completionBlocks release]; | ||
| [preparationBlocks release]; | ||
| [super dealloc]; | ||
| } | ||
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| - (void) addAnimationWithBlocksForPreparing:(void(^)()) preparation animating:(void(^)()) animations completing:(void(^)(BOOL)) completion; | ||
| { | ||
| [animationBlocks addObject:[[animations copy] autorelease]]; | ||
| [completionBlocks addObject:[[completion copy] autorelease]]; | ||
| [preparationBlocks addObject:[[preparation copy] autorelease]]; | ||
| } | ||
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| - (void)main; | ||
| { | ||
| [self startAnimating]; | ||
| } | ||
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| - (void)startAnimating; | ||
| { | ||
| [UIView animateWithDuration:0.25 delay:0.0 options:UIViewAnimationCurveEaseInOut animations:^{ | ||
| [self invokeAnimationBlocks]; | ||
| } completion:^(BOOL finished) { | ||
| [self invokeCompletionBlocksWithResult:finished]; | ||
| [self end]; | ||
| }]; | ||
| } | ||
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| - (void)cancel; | ||
| { /* This method intentionally left blank */ } | ||
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| - (void) invokePreparationBlocks; // in an arbitrary order | ||
| { | ||
| for (void (^block)() in preparationBlocks) | ||
| block(); | ||
| } | ||
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| - (void) invokeAnimationBlocks; // in an arbitrary order | ||
| { | ||
| for (void (^block)() in animationBlocks) | ||
| block(); | ||
| } | ||
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| - (void)invokeCompletionBlocksWithResult:(BOOL)finished; | ||
| { | ||
| for (void (^block)(BOOL) in completionBlocks) | ||
| block(finished); | ||
| } | ||
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| - (void)end; | ||
| { | ||
| [animationBlocks removeAllObjects]; | ||
| [completionBlocks removeAllObjects]; | ||
| [preparationBlocks removeAllObjects]; | ||
| } | ||
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| @end | ||
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| #endif |