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Layout invalidation API #499

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Layout invalidation API #499

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Layout invalidation API
Feb 20, 2017
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changelog
Feb 20, 2017
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unit tests
Feb 20, 2017
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Feb 21, 2017
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9 changes: 5 additions & 4 deletions Source/IGListCollectionContext.h
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Original file line number Diff line number Diff line change
Expand Up @@ -219,13 +219,14 @@ NS_ASSUME_NONNULL_BEGIN
- (void)reloadSectionController:(IGListSectionController<IGListSectionType> *)sectionController;

/**
Invalidate the backing UICollectionViewLayout for all items in the section controller.
Invalidate the backing `UICollectionViewLayout` for all items in the section controller.

@param sectionController The section controller who needs invalidating.
@param sectionController The section controller that needs invalidating.
@param completion An optional completion block to execute when the updates are finished.

@discussion This method can be wrapped in UIView animation APIs to control the duration of the animation, perform
without animations, or use springs.
@note This method can be wrapped in `UIView` animation APIs to control the duration or perform without animations. This
will end up calling `-[UICollectionView performBatchUpdates:completion:] internally, so invalidated changes may not be
reflected in the cells immediately.
*/
- (void)invalidateLayoutForSectionController:(IGListSectionController<IGListSectionType> *)sectionController
completion:(nullable void (^)(BOOL finished))completion;
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