3 commits

Author	SHA1	Message	Date
Ryan Nystrom	073fc073e0	Prevent duplicate item deletes and drop reload collisions ... Summary: a415ef5552 exposed a bug in `UICollectionView` where its state gets corrupted when deleting the same index path more than once in a single batch update block. This resulted crashes like ``` * thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x4) Closes https://github.com/Instagram/IGListKit/pull/657 Reviewed By: jessesquires Differential Revision: D4913790 Pulled By: rnystrom fbshipit-source-id: 8f6fcdd2e2438da309fc64ca0ac111b9a0980149	2017-04-19 17:17:41 -07:00
Ryan Nystrom	4dec244416	Add item-level moves to IGListCollectionContext ... Summary: Adding an API to do item-level (cell) moves on the collection view. This complicates things a little bit because of all the issues that moving sections have while in batch updates (e.g. simultaneous animation UICV bugs). Thankfully we use pretty strict types so the compiler does most of the work for us. Closes #145 - [x] Tests build and pass - [x] Add `IGListBatchUpdateData` tests to check moves during - [x] ~~Moving within a reloaded section (no op)~~ can't reload sections - [x] Moving within a deleted section (no op) - [x] Moving within a moved section (convert section ops to delete+insert) - [x] Moving an index path that is also reloaded (convert to delete+insert path) - [x] Add move unit tests to `IGListAdapterUpdater` - [x] Add move unit tests to `IGListReloadDataUpdater` (mostly for code coverage...) - [x] Add move unit tests to `IGListStackedSectionController` - [x] Add `CHANGELOG.md` entry for 3.0.0 - [x] Test moving without batch Closes https://github.com/Instagram/IGListKit/pull/418 Reviewed By: jessesquires Differential Revision: D4521732 Pulled By: rnystrom fbshipit-source-id: 99a46d1cbb0cc1f857a62ff6ca257aff6e8b7f25	2017-02-10 18:01:18 -08:00
FBShipIt	cdc796746a	Initial commit ... fbshipit-source-id: c38b897b9e2b87c782e0e01b0145d9189dc7f9d8	2016-10-11 10:12:17 -04:00