Commit graph

48 commits

Author SHA1 Message Date
Qinghua Hong
08bf69cc2f Fix #1275 layouts inconsistency in updateAnimated:completion of IGListBindingSectionController (#1285)
Summary:
## Changes in this pull request

Issue fixed: https://github.com/Instagram/IGListKit/issues/1275

This PR is straintforward solution as mentioned in https://github.com/Instagram/IGListKit/issues/1275. When I finished it, I realized that it is not a problem in `IGListCollectionViewLayout Partial Optimization` and `IGListBindingSectionController` deserved it. Maybe `IGListCollectionViewLayout` is rarely used because of great builtin UICollectionViewFlowLayout or cells in section rarely need changing their sizes in practices.

Despite it is not `IGListCollectionViewLayout`'s fault, I think it can be more optimized against `invalidateLayoutWithContext`. I would like to make an another PR to optimize it.

Due to this PR just giving a proposed solution, it lacks of adding tests and changing log. When this solution is accepted, I would like to complete these todos.

### Checklist

- [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)
Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1285

Reviewed By: candance

Differential Revision: D15592807

Pulled By: lorixx

fbshipit-source-id: ae06abce896341509de4f3dfb73b3a7bc0a68c51
2019-06-11 22:29:34 -07:00
Ryan Nystrom
8d8a632b67 Update MIT license language (#1272)
Summary:
Updating license language to meet FB open source standards.
Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1272

Differential Revision: D12844366

Pulled By: rnystrom

fbshipit-source-id: 27ae49ae00d963c5c012c79c5738365c232a5773
2018-11-01 10:58:46 -07:00
Zhisheng Huang
f699ea0e17 Add option to update cells instead of delete+insert for section reload
Summary:
We have seen unnecessary flashiness updates for any section reload updates.

Basically we have 1 section for 1 cell, which is recommended by the IGListKit document in https://instagram.github.io/IGListKit/best-practices-and-faq.html, specifically:

> "We highly recommend using single-item sections when possible."

However, the issue is that whenever we update the underlying data model, we would trigger a delete+insert for the section reload.

In order to mitigate that, we can fix this delete+insert changes or we use the `IGListBindingSectionController`, however, the latter one requires more refactoring plus view model wrapper to have `isEqualToDifferable:` to return YES, which seems less than ideal.

I am proposing that we add an option to the `IGListAdapterUpdater`, as `preferItemReloadsForSectionReloads` so that when it's set to YES, we would trigger the proper `-[UICollectionView reloadItemsAtIndexPaths:]` which handles the cell update properly.

This option also handles the case where the number of items in the section is changed before and after the updates, in that case, it will fallback to do the "delete+insert" section operation.

Reviewed By: rnystrom

Differential Revision: D9519519

fbshipit-source-id: 22ecca07679ebdd212cf771c61e40887cb6a9ba8
2018-08-28 23:32:43 -07:00
Jeff Bailey
a7d720d007 IGListBindingSectionController no longer asserts when reloading the entire section. (#1213)
Summary:
Issue fixed: #1174

- [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)
Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1213

Differential Revision: D9003398

Pulled By: rnystrom

fbshipit-source-id: 2c68f42e21abaea9191f26309668d866544f80b4
2018-07-25 14:40:22 -07:00
Jesse Squires
0c0b31ad7c Run setup script with CocoaPods 1.5.3 (#1216)
Summary:
- Run setup script with CP 1.5.3
- Update to Xcode9.4 recommended settings
- Fix Xcode warnings about NSUInteger

This way we can avoid these changes on other open PRs/diffs.
Pull Request resolved: https://github.com/Instagram/IGListKit/pull/1216

Differential Revision: D8990061

Pulled By: rnystrom

fbshipit-source-id: ae15a267d7e6f19f71203ac4cd7d80ee966ee48b
2018-07-25 06:47:35 -07:00
Bofei Zhu
6c64c54a32 Remove optional (#1186)
Summary:
Issue fixed: #859

- [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)
Closes https://github.com/Instagram/IGListKit/pull/1186

Differential Revision: D8264918

Pulled By: rnystrom

fbshipit-source-id: 9f32c085f305299efd839bb365a5d32109ff4f17
2018-06-26 07:02:42 -07:00
Ryan Nystrom
000bc36919 Relicense to MIT
Summary: Relicensing IGListKit under MIT

Reviewed By: calimarkus

Differential Revision: D7764125

fbshipit-source-id: 6c773195ef3184202725fe7f08de754f979cb83f
2018-05-01 14:50:56 -07:00
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
Sue Suhan Ma
a18bd7c495 Customized animation unit test
Summary: test when the item is inserted/removed, if the layout could successfully get the initial/final attributes from the section controller

Reviewed By: rnystrom

Differential Revision: D6759201

fbshipit-source-id: e674662d1e47c374d38019c988c1a37fece2417a
2018-01-29 12:34:13 -08:00
Darren Clark
6e4979f6c4 IGListSingleSectionControllerDelegate: add deselect delegate method
Summary:
Added `-didDeselectSectionController:withObject:` to `IGListSingleSectionControllerDelegate`.

Not sure if it makes sense to make it non-optional in 4.0.0 or not (#909) - I can add the [same note](0f04a07319/Source/IGListBindingSectionControllerSelectionDelegate.h (L40)) to the docs if it is

- [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)
Closes https://github.com/Instagram/IGListKit/pull/954

Differential Revision: D6164711

Pulled By: rnystrom

fbshipit-source-id: aa8cfd2bb72a16cb525d875e2cad93888f13c641
2017-12-18 12:45:09 -08:00
Maxime Ollivier
74c5fb3566 Update pods and examples
Summary:
Update pod and examples so project builds when synced

Depends on D6545334

Reviewed By: rnystrom

Differential Revision: D6573821

fbshipit-source-id: b0d4246fa9c0d627ebcd34ac7abd5c8453964037
2017-12-15 09:33:39 -08:00
Maxime Ollivier
23bcc5c7c0 created IGListCollectionView
Summary: * IGListCollectionView passes update information to IGListCollectionViewLayout.

Reviewed By: rnystrom

Differential Revision: D6510139

fbshipit-source-id: ada194d009eca7f308887ec592ecc41fb9557855
2017-12-15 09:33:39 -08:00
Igor Vasilenko
a0cf76c757 Added support UICollectionElementKindSectionFooter for IGListCollectionViewLayout
Summary:
**Changes occurred only for the IGListCollectionViewLayout.**

**Specifically:**
1. Harnessed the hardcore to the fact that it is possible to use only headers.
2. Assertions removed
3. Caching for layout of attributes of footers
4. Implemented the location of the footers in any orientation scroll

Issue fixed: #898

I need this enhancement ASAP 🙏

**Example:**
Footers with user comments count
![simulator screen shot - iphone 6 - 2017-11-14 at 13 35 22](https://user-images.githubusercontent.com/7735730/32775551-c69868cc-c940-11e7-8307-ae2e353519ff.png)

- [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] I updated example project with implemented feature
Closes https://github.com/Instagram/IGListKit/pull/1017

Reviewed By: jeremycohen

Differential Revision: D6385893

Pulled By: rnystrom

fbshipit-source-id: 5f1bad5655d2df321f8c71496aa797ac8e3d226a
2017-11-21 12:45:38 -08:00
Ryan Nystrom
a6f264fc12 Update project settings and fix errors
Summary:
Updated the main project lib settings for iOS 11, fixed all errors (which are from warnings-as-errors).

- [x] All tests pass. Demo project builds and runs.
- [x] I added an entry to the `CHANGELOG.md` for any breaking changes, enhancements, or bug fixes.
Closes https://github.com/Instagram/IGListKit/pull/942

Differential Revision: D6161473

Pulled By: rnystrom

fbshipit-source-id: 1fd51d8805f9c6483942b44d750b2756efde9376
2017-10-26 11:20:55 -07:00
Ryan Nystrom
5cf01cc0a7 Add update finished announcer API
Summary:
Adding a new API to support adding 1:many listeners to observe when an `IGListAdapter` finishes performing an update event. It supports:

- `performUpdates:`
- `reloadData...`
- Even handling update triggered from //inside// a section controller

Differential Revision: D6108096

fbshipit-source-id: d0b43d83f1963fdbf6ef388685cbd8f6890177fa
2017-10-20 08:57:11 -07:00
Kevin Delannoy
9ddc64f4ce Add cell (un)highlight APIs
Summary:
This implements the `collectionView:didHighlightItemAtIndexPath:` and `collectionView:didUnhighlightItemAtIndexPath:` `UICollectionViewDelegate` APIs and forward the calls to the appropriate `IGListSectionController`.
For the most part, it's doing the same thing as the `collectionView:didDeselectItemAtIndexPath:` calls and tests are also based on that feature.

- Implements `collectionView:didHighlightItemAtIndexPath:` and `collectionView:didUnhighlightItemAtIndexPath:` in IGListAdapter
- Catch those selectors in `IGListAdapterProxy`
- Adds `didHighlightItemAtIndex:` and `didUnhighlightItemAtIndex:` methods to IGListSectionController and friends (supports `IGListBindingSectionController` via its delegate and `IGListStackedSectionController`)
- Tests for changes

Issue fixed: I didn't open one, so none I guess.

- [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)
Closes https://github.com/Instagram/IGListKit/pull/933

Differential Revision: D5872090

Pulled By: rnystrom

fbshipit-source-id: adc93b68aced3e995f32c291bf607a263cd58edf
2017-09-20 08:46:17 -07:00
Ryan Nystrom
65a5e6de05 Fix binding SC deselection crash and publish 3.1.1
Summary:
- Fixed #918 by checking `respondsToSelector:` (boo optionals)
- Cut 3.1.1 for immediate publish

- [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.
Closes https://github.com/Instagram/IGListKit/pull/921

Differential Revision: D5748009

Pulled By: rnystrom

fbshipit-source-id: b387b3988abc785f312bc47ac003851283972d7a
2017-08-31 12:51:10 -07:00
Peter Edmonston
9e312275c3 Add horizontal scrolling support to IGListCollectionViewLayout
Summary:
Issue fixed: #752

- [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)

This PR generalizes the layout logic in `IGListCollectionViewLayout.mm` to handle horizontally scrolling layouts, mainly by generalizing references to `width`, `height`, `x` and `y` to take scrolling direction into account. This changes the signature of `IGListCollectionViewLayout.init` as well as the names of a few properties, so it would be a breaking change.

I added a couple of unit tests specifically for horizontal layouts -- but held off from adding a horizontal version of *every* unit test for this class, as it would basically double the number of tests. But if you want that, just let me know and I'm happy to do it.

Also let me know if you want me to add a demo VC to the Examples project that uses this new horizontal flow layout -- I have some demo code handy (I used it for testing), but didn't want to clutter up the PR if you didn't want/need it.
Closes https://github.com/Instagram/IGListKit/pull/857

Reviewed By: ryanolsonk

Differential Revision: D5547266

Pulled By: rnystrom

fbshipit-source-id: 6094c45069fc265273d0f95c296fa78e47470384
2017-08-07 09:33:30 -07:00
Ryan Nystrom
6540f960e2 Add cell deselection API
Summary:
Adding support for a cell deselection API. Trying to make some headway to move and drag+drop support, but also want better stock `UICollectionView` API support. Will also assist eventual `UITableView` support.

- Added overridable API to `IGListSectionController`
- Support for stacked SC
- Breaking, required protocol for binding SC

Assists #524 and #184

- [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.
Closes https://github.com/Instagram/IGListKit/pull/853

Reviewed By: jeremycohen

Differential Revision: D5425414

Pulled By: rnystrom

fbshipit-source-id: 0b25c125b1f171979a15c3095095fc18b4108be6
2017-07-17 14:19:41 -07:00
Ryan Nystrom
fdbe025fe1 Add base test case class for simpler unit testing
Summary:
Making it simpler to setup tests w/ default config and objects. Less LoC in tests, lower setup cost when creating new test suites.

Should I changelog?

Issue fixed: #183

- [x] All tests pass. Demo project builds and runs.
- [x] I added tests, an experiment, or detailed why my change isn't tested.
Closes https://github.com/Instagram/IGListKit/pull/678

Differential Revision: D4921633

Pulled By: rnystrom

fbshipit-source-id: fb4d08acb6ed0ba885cf56ce147f70b304301ff1
2017-04-20 14:36:28 -07:00
Ryan Nystrom
3102852ce2 Remove IGListSectionType
Summary:
Removing the `IGListSectionType` protocol and adding default implementations into `IGListSectionController`.

- `numberOfItems` returns 1
- `cellForItemAtIndex:` asserts (have to return a cell)
- `didUpdateToObject:` no-ops
- `didSelectItemAtIndex:` no-ops

Fixes #168

Reviewed By: jessesquires

Differential Revision: D4909585

fbshipit-source-id: 8816702504e3fc0683868914ff4dd20e4af7c166
2017-04-19 08:26:30 -07:00
Jesse Squires
2284ce3897 kill IGListCollectionView. GH issue #409 (redo of D4640425)
Summary:
Take 2. Remove `IGListCollectionView` per #409. Use plain old `UICollectionView`.
(This re-applies D4640425 and updates as needed.)

Also:
- run `pod update` everywhere
- update changelog

Reviewed By: paulvanderspek

Differential Revision: D4812207

fbshipit-source-id: 1ddbae06cdeddb43d8af175d3e8a045a36ff150e
2017-03-31 14:54:09 -07:00
Ryan Nystrom
4e9b0bb4c4 Prevent negative spaces for items and supplementaries
Summary:
If a negative height/width comes down, cap it to `0.0`.

Issue fixed: #566

Also fixes t16455632 internally.

- [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.
Closes https://github.com/Instagram/IGListKit/pull/583

Differential Revision: D4797520

Pulled By: jessesquires

fbshipit-source-id: 3eeec5244a445bb451460286b4f006ca0d9c67d1
2017-03-29 15:01:08 -07:00
Bofei Zhu
f7702fa713 Container Inset Size For Section Controller
Summary:
Add API for #315. Not sure if this is what you want rnystrom though 🤔. Will add tests after you confirm.

- [x] All tests pass. Demo project builds and runs.
- [x] I added tests, an experiment, or detailed why my change isn't tested.
- [ ] 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)
Closes https://github.com/Instagram/IGListKit/pull/456

Reviewed By: jessesquires

Differential Revision: D4697190

Pulled By: rnystrom

fbshipit-source-id: f8513cf2fa33441eb40f486954136553d19dda0c
2017-03-15 09:25:40 -07:00
Ryan Nystrom
79348164a7 Auto diffing section controller
Summary:
Started work on the plane to get this moving since #418  is up and ready to land. We'll likely need to spend some time fleshing out the API of this, and I think I'll split it up into a couple different PRs once ready for review. Putting this up now to get early feedback.

This adds an auto-diffing section controller as outlined in #38. There are several key parts:

- Subclass a new section controller `IGListAutoSectionController` (naming wip)
- Connect a data source
- Implement the data source methods that do 3 things:
  - Given a top-level object, transform it into an array of **diffable** view models
  - Given a view model, return a cell
  - Given a view model, return a size for a cell
- A new protocol for the cell `IGListBindable` so that we can control when the cell is updated w/ the view model.
  - The most important part of this is that it unlocks moving and reloading a cell, which you can't do w/ `UICollectionView`

- [ ] Unit test `reloadObjects:`
- [x] Add
Closes https://github.com/Instagram/IGListKit/pull/494

Reviewed By: amonshiz

Differential Revision: D4696966

Pulled By: rnystrom

fbshipit-source-id: f21b8341b3ed4389f2a4a106d0d316f481ba6943
2017-03-15 07:47:24 -07:00
Ryan Nystrom
3f9dea21e0 Track batch updates in object and explicit state
Summary:
Batch updates are complicated b/c its unknown when the update block will actually execute. When executing the block, we want to collect inserts/deletes/reloads/moves (item and section). Allow mutations to happen synchronously outside of the update block.

Tracking state will also help with the auto-diff where we need to allow re-entrant updates.

Peeling off a chunk from #494

Issue fixed: #288

- [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.
Closes https://github.com/Instagram/IGListKit/pull/525

Reviewed By: jessesquires

Differential Revision: D4656463

Pulled By: rnystrom

fbshipit-source-id: 8f4d3dc21b03d595e02ee9ee9664277e8ead0531
2017-03-07 09:33:03 -08:00
Leyla Hujer
68a264d29c Revert D4640425: [IGListKit] kill IGListCollectionView. GH issue #409
Summary: This reverts commit 871b75eaeb1c9f2a40fe8f3fd81b209661704587

Differential Revision: D4640425

fbshipit-source-id: 4b0e8a9820891062cf7f8d13de13d678adb5df4a
2017-03-06 16:15:31 -08:00
Jesse Squires
3fb2ac0d60 kill IGListCollectionView. GH issue #409
Summary: Remove `IGListCollectionView` per #409. Use plain old `UICollectionView`.

Reviewed By: rnystrom

Differential Revision: D4640425

fbshipit-source-id: 871b75eaeb1c9f2a40fe8f3fd81b209661704587
2017-03-06 15:01:01 -08:00
Ryan Nystrom
6bdcac81d8 Layout invalidation API
Summary:
Adding a new layout-invalidation API, telling the layout object to query and rebuild the layout for all items in the section controller. This works with `UICollectionViewFlowLayout` and should work with other custom layouts (including our own).

Issue fixed: #360, #459

- [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.
Closes https://github.com/Instagram/IGListKit/pull/499

Reviewed By: jessesquires

Differential Revision: D4590274

Pulled By: rnystrom

fbshipit-source-id: f87235be4e6c024bf979b831a8938be68895e011
2017-02-21 15:30:56 -08:00
Ryan Nystrom
9c37fbf8a4 Handle nil section controllers from data source
Summary:
Removing the assert and handling `nil` section controllers. This wont effect Swift code which demands a non-optional section controller, but Objective-C is more nuanced. There is evidence that some callers do not have a default state and are returning `nil`.

Unfortunately this will [OOB here](https://github.com/Instagram/IGListKit/blob/master/Source/Internal/IGListSectionMap.m#L63) if using the original `objects` array provided by the data source. Instead we prune the array, only allowing in objects that have a matching section controller.

Fixes t15773862 internally.

- [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.
Closes https://github.com/Instagram/IGListKit/pull/488

Reviewed By: dshahidehpour

Differential Revision: D4553886

Pulled By: rnystrom

fbshipit-source-id: a473a99b5eb513e4b610019dba0394a014193fc4
2017-02-14 08:01:47 -08:00
Dustin Shahidehpour
fef72e579e Backed out changeset b72b444c1197
Summary: This diff isn't correct, and the Instagram cut happens today. Pulling back so I have time to test the correct change more throughly.

Reviewed By: rnystrom

Differential Revision: D4550149

fbshipit-source-id: 2e882caeb9ef999b7fd57562740b352ea8edfa5f
2017-02-12 14:30:39 -08:00
Ryan Nystrom
e2c2d3dcec Vertical UICollectionViewLayout supporting inline sections (take 2)
Summary:
Working on porting our collection view layout to IGListKit. I'm doing this because its a solid layout, and we just finished preparing it to work with inline sections. It is designed to work in tandem with IGListKit, so we're adding it.

This is still a WIP as I add more tests, but I'd love as much feedback as possible.

Aside from the glob of header documentation, this has the following features:

- Infinite sections that each have infinite items. Sections and items can fall inline. When they break the width of their container they will fall on the next row.
- Sections can have their own insets, line spacing, and interitem spacing.
- Sticky header support! When you use headers, it will always newline the section.
- Maximum width with a border decoration view
  - Use this to pinch in your content on larger devices

Followup to #423

- [ ] ~~Move decoration view support to delegate~~ removed
- [x] Unit test changing [top y sticky inset](https://coveralls.io/builds/9977284/source?filen
Closes https://github.com/Instagram/IGListKit/pull/484

Differential Revision: D4547760

Pulled By: rnystrom

fbshipit-source-id: 879e2da16eb78bb6a90967e77d9ad0bbf7c69594
2017-02-10 18:01:22 -08:00
Ryan Nystrom
80ad941369 Revert D4521797: [IGListKit][PR] Vertical UICollectionViewLayout supporting inline sections
Summary: This reverts commit 20b36ae573d38ca3125a6f3d5faec181c290ab94

Differential Revision: D4521797

fbshipit-source-id: 447de6cf2b30de9c2109dffb266326aceceec7fc
2017-02-10 11:33:07 -08:00
Ryan Nystrom
727833409f Vertical UICollectionViewLayout supporting inline sections
Summary:
Working on porting our collection view layout to IGListKit. I'm doing this because its a solid layout, and we just finished preparing it to work with inline sections. It is designed to work in tandem with IGListKit, so we're adding it.

This is still a WIP as I add more tests, but I'd love as much feedback as possible.

Aside from the glob of header documentation, this has the following features:

- Infinite sections that each have infinite items. Sections and items can fall inline. When they break the width of their container they will fall on the next row.
- Sections can have their own insets, line spacing, and interitem spacing.
- Sticky header support! When you use headers, it will always newline the section.
- Maximum width with a border decoration view
  - Use this to pinch in your content on larger devices

Followup to #423

- [ ] ~~Move decoration view support to delegate~~ removed
- [x] Unit test changing [top y sticky inset](https://coveralls.io/builds/9977284/source?filen
Closes https://github.com/Instagram/IGListKit/pull/450

Reviewed By: jessesquires

Differential Revision: D4521797

Pulled By: rnystrom

fbshipit-source-id: 20b36ae573d38ca3125a6f3d5faec181c290ab94
2017-02-10 08:30:33 -08:00
Dustin Shahidehpour
fce3286ae4 Decouple Empty View from backgroundView, make it move with PTR
Summary:
1. The "Empty View" and CV background view are different things. People can now differentiate.
2. The Empty View isn't created until it is needed.
3. The Empty View moves with Refresh Controls.

![](https://media.giphy.com/media/26gslZ7qP07e4N9h6/giphy.gif)

- [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)
Closes https://github.com/Instagram/IGListKit/pull/462

Reviewed By: rnystrom

Differential Revision: D4502591

Pulled By: dshahidehpour

fbshipit-source-id: b72b444c1197c90c385c7414f0662299070a86d1
2017-02-06 08:14:00 -08:00
Ryan Nystrom
10bdfb23f9 Add more unit tests to stack section controller
Summary:
Beefing up our test coverage. Made an improvement to supplementary view behavior along the way. Will update `CHANGELOG.md` once travis finishes w/ link to PR #.

- [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 have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/.github/CONTRIBUTING.md)
Closes https://github.com/Instagram/IGListKit/pull/286

Differential Revision: D4281961

Pulled By: jessesquires

fbshipit-source-id: 32b5877bd72250b9a99e600ceffc64d686fa5651
2016-12-05 17:44:02 -08:00
Bofei Zhu
4231235620 Unit tests for -scrollToObject horizontal end position
Summary:
Fixes #238

Try to finish what I started 😂
Closes https://github.com/Instagram/IGListKit/pull/247

Differential Revision: D4220011

Pulled By: rnystrom

fbshipit-source-id: 9f4e1bd4f112f69f601c83d6604dc18bc27f0c68
2016-11-22 06:44:01 -08:00
Ryan Nystrom
316fbe2b8b Remove NSObject+IGListDiffable category
Summary: Removing the category entirely (recreated for unit tests and examples). Went through and updated all of Instagram so we don't rely on the category and found a few models that needed cleaning up.

Reviewed By: jessesquires

Differential Revision: D4206552

fbshipit-source-id: ee8147e8872ea19f6c8bd8072df61eed5bffb6f3
2016-11-21 16:59:00 -08:00
Ryan Nystrom
74affe0887 Fixes crash when accessing a cell within working range updates
Summary:
I was able to build a unit test that reproduces the issue. We can avoid the crash by simply returning `nil` when accessing a cell while working range events are being vended.

There is definitely something weird going on here though. When debugging `cellForItemAtIndexPath:` I found:

```
(lldb) po indexPath
<NSIndexPath: 0xc000000000000516> {length = 2, path = 5 - 0}
(lldb) po [[self collectionView] numberOfSections]
11
```

So in theory we should be fine, right? But when I continue I get

```
*** Assertion failure in -[UICollectionViewData numberOfItemsBeforeSection:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-3600.5.2/UICollectionViewData.m:611
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'request for number of items before section 5 when there are only 3 sections in the collection view'
```

There _were_ 3 sections in the UICV before the update, but the data source and structure powering
Closes https://github.com/Instagram/IGListKit/pull/216

Differential Revision: D4204625

Pulled By: rnystrom

fbshipit-source-id: 455ed199dfc115077e4294e2843016a50e179015
2016-11-18 09:59:01 -08:00
Ryan Nystrom
87f02e8ca7 Unit test cell selection, display, and scroll dragging events
Summary:
Fixes #192, #193

- [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 have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md)
Closes https://github.com/Instagram/IGListKit/pull/219

Reviewed By: rnystrom

Differential Revision: D4201039

Pulled By: jessesquires

fbshipit-source-id: 39cd7d712d1ebef52c0ec3e148f532d5f62e56c8
2016-11-17 20:13:56 -08:00
Suraya Shivji
e2fbb68670 Swap NSUInteger to NSInteger Public API
Summary:
Swapped NSUInteger to NSInteger in public headers. Fixed a test in IGListSectionMapTests.m to pass with NSInteger. For issue #200!

- [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 have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md)
Closes https://github.com/Instagram/IGListKit/pull/205

Differential Revision: D4191521

Pulled By: rnystrom

fbshipit-source-id: 3f15c5ee3f8ed2d382de2602912a2e998bfbcbba
2016-11-16 15:28:59 -08:00
Ryan Nystrom
ab890fc607 Change equality API to avoid NSObject override
Summary:
Changing the API to avoid overiding `-[NSObject isEqual:]` because of the side effects it brings (e.g. `-hash`). Not to mention the problems with Swift 2.3.

Fixes #65.

Reviewed By: jessesquires

Differential Revision: D4138570

fbshipit-source-id: 804af6c468c4c273adb73377e9bfda22515121d1
2016-11-10 16:59:02 -08:00
Ryan Nystrom
f5339113df Support supplementaryViews created from nibs (continued)
Summary:
Continuing the work on #90. I don't believe I can push directly to that PR since the origin is `master` of a repo I don't have access to.

https://help.github.com/articles/checking-out-pull-requests-locally/

I went ahead and added another supplementary view test copying the old one we had.

cc jessesquires in case there's something else I can do here. I believe this will still give rawlinxx credit?
Closes https://github.com/Instagram/IGListKit/pull/162

Differential Revision: D4137364

Pulled By: rnystrom

fbshipit-source-id: d8418ac5728fd6d9570fa1d1568f4343f5c4112b
2016-11-05 16:29:06 -07:00
Bofei Zhu
158d04ebe0 Support supplementaryViews created from storyboard
Summary:
Miss this in the previous PR #92. Will add unit test soon.
Closes https://github.com/Instagram/IGListKit/pull/123

Differential Revision: D4101594

Pulled By: rnystrom

fbshipit-source-id: 820030358532b0878f6d9e9092834266c9260a38
2016-11-01 10:59:21 -07:00
Bofei Zhu
9685f2ba06 Provide object in IGListSingleSectionController size block
Summary:
Fix #144
Closes https://github.com/Instagram/IGListKit/pull/147

Differential Revision: D4111495

Pulled By: rnystrom

fbshipit-source-id: 34d66e60a7e389da684239b6a6aa992cbcd3d9cd
2016-11-01 10:59:21 -07:00
Bofei Zhu
8855b5156a Add storyboard support #39
Summary:
This PR is for #39

- [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md)
Closes https://github.com/Instagram/IGListKit/pull/92

Differential Revision: D4066721

Pulled By: rnystrom

fbshipit-source-id: 4fca278ae9a54aa46626932d47d4a4c001b437d6
2016-10-25 15:29:13 -07:00
Sven Bacia
ce4b851da3 Support cells created from nibs
Summary:
I started working on adding support for dequeuing cells created from nibs (issue #1). Additionally I extended `IGListSingleSectionController` so that it can be used with nibs too. I don't know if you had this also in mind.

- [x]  I'm currently thinking about the best way to test these changes.
- [x] I was not able to update the documentation (issue #55).

- [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 have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md)
Closes https://github.com/Instagram/IGListKit/pull/56

Reviewed By: dshahidehpour

Differential Revision: D4023746

Pulled By: rnystrom

fbshipit-source-id: 6a8b4cfb4dba38ea6e9870a9a4506288ee155cfe
2016-10-14 18:59:18 -07:00
FBShipIt
cdc796746a Initial commit
fbshipit-source-id: c38b897b9e2b87c782e0e01b0145d9189dc7f9d8
2016-10-11 10:12:17 -04:00