IGListKit/Tests/Objects
Jared Verdi f15b167e85 Interactive Reordering
Summary:
I had a desire for interactive reordering in a personal project, so here's a first attempt at adding support in IGListKit.

I figured I might as well get a WIP PR up for comments before I continue further as there are a few aspects to interactive reordering that don't interplay perfectly with IGListKit.

As discussed in #291, I went after two prime use cases:
1. Moving items amongst a section
2. Rearranging whole sections

I also "disabled" moving items between sections by having those moves revert, to mimic interactive reordering cancellation as closely as possible.

You can see both in the Mixed Data example. Grid items can be moved within a section, while users can be moved to reorder whole sections. But trying to move a grid item out of a grid or a user item into a grid will auto-revert. The revert animation isn't as tight as it should be. It may be more desirable to disable the animation - though you lose the visual cue.

There is a also a new example, `ReorderableViewController`, that demonstrates 2 in its pure form (likely the most desired use case), where all sections are reorderable single rows.

Happy to take feedback -- this is my first experience working on IGListKit, so I would expect there to be gaps. (Ex. I haven't used `IGListStackedSectionController`, and its tests failed as I hadn't implemented reordering delegates for it. Those are simply stubbed out for now.)

Issue fixed: #291

- [x] All tests pass. Demo project builds and runs.
- [x] I added tests, an experiment, or detailed why my change isn't tested.
- [x] I added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes.
- [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md)

- [x] Proper support in `IGListStackedSectionController`
Closes https://github.com/Instagram/IGListKit/pull/976

Differential Revision: D6674493

Pulled By: rnystrom

fbshipit-source-id: cd53c5fdc6fb59636edc4747c4bbd0f81a4610e5
2018-02-12 09:27:08 -08:00
..
IGLayoutTestDataSource.h Vertical UICollectionViewLayout supporting inline sections (take 2) 2017-02-10 18:01:22 -08:00
IGLayoutTestDataSource.m Added support UICollectionElementKindSectionFooter for IGListCollectionViewLayout 2017-11-21 12:45:38 -08:00
IGLayoutTestItem.h created IGListCollectionView 2017-12-15 09:33:39 -08:00
IGLayoutTestItem.m Vertical UICollectionViewLayout supporting inline sections (take 2) 2017-02-10 18:01:22 -08:00
IGLayoutTestSection.h Update pods and examples 2017-12-15 09:33:39 -08:00
IGLayoutTestSection.m created IGListCollectionView 2017-12-15 09:33:39 -08:00
IGListAdapterUpdateTester.h Add update finished announcer API 2017-10-20 08:57:11 -07:00
IGListAdapterUpdateTester.m Add update finished announcer API 2017-10-20 08:57:11 -07:00
IGListTestAdapterDataSource.h Add base test case class for simpler unit testing 2017-04-20 14:36:28 -07:00
IGListTestAdapterDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGListTestAdapterHorizontalDataSource.h Unit tests for -scrollToObject horizontal end position 2016-11-22 06:44:01 -08:00
IGListTestAdapterHorizontalDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGListTestAdapterReorderingDataSource.h Interactive Reordering 2018-02-12 09:27:08 -08:00
IGListTestAdapterReorderingDataSource.m Interactive Reordering 2018-02-12 09:27:08 -08:00
IGListTestAdapterStackedReorderingDataSource.h Interactive Reordering 2018-02-12 09:27:08 -08:00
IGListTestAdapterStackedReorderingDataSource.m Interactive Reordering 2018-02-12 09:27:08 -08:00
IGListTestAdapterStoryboardDataSource.h Support supplementaryViews created from storyboard 2016-11-01 10:59:21 -07:00
IGListTestAdapterStoryboardDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGListTestContainerSizeSection.h Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGListTestContainerSizeSection.m Container Inset Size For Section Controller 2017-03-15 09:25:40 -07:00
IGListTestHorizontalSection.h Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGListTestHorizontalSection.m Unit tests for -scrollToObject horizontal end position 2016-11-22 06:44:01 -08:00
IGListTestOffsettingLayout.h Initial commit 2016-10-11 10:12:17 -04:00
IGListTestOffsettingLayout.m Initial commit 2016-10-11 10:12:17 -04:00
IGListTestSection.h Add cell (un)highlight APIs 2017-09-20 08:46:17 -07:00
IGListTestSection.m Add cell (un)highlight APIs 2017-09-20 08:46:17 -07:00
IGListTestStoryboardSection.h Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGListTestStoryboardSection.m Support supplementaryViews created from storyboard 2016-11-01 10:59:21 -07:00
IGListTestUICollectionViewDataSource.h Initial commit 2016-10-11 10:12:17 -04:00
IGListTestUICollectionViewDataSource.m Change equality API to avoid NSObject override 2016-11-10 16:59:02 -08:00
IGTestBindingWithoutDeselectionDelegate.h Fix binding SC deselection crash and publish 3.1.1 2017-08-31 12:51:10 -07:00
IGTestBindingWithoutDeselectionDelegate.m Fix binding SC deselection crash and publish 3.1.1 2017-08-31 12:51:10 -07:00
IGTestCell.h Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestCell.m Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestDelegateController.h Customized animation unit test 2018-01-29 12:34:13 -08:00
IGTestDelegateController.m Customized animation unit test 2018-01-29 12:34:13 -08:00
IGTestDelegateDataSource.h Add base test case class for simpler unit testing 2017-04-20 14:36:28 -07:00
IGTestDelegateDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestDiffingDataSource.h Add base test case class for simpler unit testing 2017-04-20 14:36:28 -07:00
IGTestDiffingDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestDiffingObject.h Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestDiffingObject.m Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestDiffingSectionController.h Add cell (un)highlight APIs 2017-09-20 08:46:17 -07:00
IGTestDiffingSectionController.m Add cell (un)highlight APIs 2017-09-20 08:46:17 -07:00
IGTestNibSupplementaryView.h Support supplementaryViews created from nibs (continued) 2016-11-05 16:29:06 -07:00
IGTestNibSupplementaryView.m Support supplementaryViews created from nibs (continued) 2016-11-05 16:29:06 -07:00
IGTestNumberBindableCell.h Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestNumberBindableCell.m Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestObject.h Add base test case class for simpler unit testing 2017-04-20 14:36:28 -07:00
IGTestObject.m Remove NSObject+IGListDiffable category 2016-11-21 16:59:00 -08:00
IGTestReorderableSection.h Interactive Reordering 2018-02-12 09:27:08 -08:00
IGTestReorderableSection.m Interactive Reordering 2018-02-12 09:27:08 -08:00
IGTestSingleItemDataSource.h Add base test case class for simpler unit testing 2017-04-20 14:36:28 -07:00
IGTestSingleItemDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestSingleNibItemDataSource.h Add base test case class for simpler unit testing 2017-04-20 14:36:28 -07:00
IGTestSingleNibItemDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestSingleStoryboardItemDataSource.h Add storyboard support #39 2016-10-25 15:29:13 -07:00
IGTestSingleStoryboardItemDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestSingleWithoutDeselectionDelegate.h IGListSingleSectionControllerDelegate: add deselect delegate method 2017-12-18 12:45:09 -08:00
IGTestSingleWithoutDeselectionDelegate.m IGListSingleSectionControllerDelegate: add deselect delegate method 2017-12-18 12:45:09 -08:00
IGTestStackedDataSource.h Add base test case class for simpler unit testing 2017-04-20 14:36:28 -07:00
IGTestStackedDataSource.m Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestStoryboardCell.h Add storyboard support #39 2016-10-25 15:29:13 -07:00
IGTestStoryboardCell.m Add storyboard support #39 2016-10-25 15:29:13 -07:00
IGTestStoryboardSupplementarySource.h Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestStoryboardSupplementarySource.m Prevent negative spaces for items and supplementaries 2017-03-29 15:01:08 -07:00
IGTestStoryboardSupplementaryView.h Support supplementaryViews created from storyboard 2016-11-01 10:59:21 -07:00
IGTestStoryboardSupplementaryView.m Support supplementaryViews created from storyboard 2016-11-01 10:59:21 -07:00
IGTestStoryboardViewController.h kill IGListCollectionView. GH issue #409 (redo of D4640425) 2017-03-31 14:54:09 -07:00
IGTestStoryboardViewController.m Support supplementaryViews created from storyboard 2016-11-01 10:59:21 -07:00
IGTestStringBindableCell.h Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestStringBindableCell.m Auto diffing section controller 2017-03-15 07:47:24 -07:00
IGTestSupplementarySource.h Remove IGListSectionType 2017-04-19 08:26:30 -07:00
IGTestSupplementarySource.m Prevent negative spaces for items and supplementaries 2017-03-29 15:01:08 -07:00