Passing around a pointer was leading to crashes as the ASVC was the sole owner of the context. There are cases where the VC would dealloc while its subnodes were laying out. This could lead to the subnodes accessing a garbage pointer.
* Perhaps controversially, decomposing ASRangeControllerUpdateRangeProtocol+Beta.h such that the categories on various classes are defined in the classes themselves since that's where the implementation of those categories is provided.
* Updating unit tests and import other headers the tests took for granted. The tests could probably import the umbrella header and not have to worry about this.
* Updating the "Life without Cocoapods" sample to build and run dependent on ASDK as a static library.
* Added a "Life With Frameworks" sample app to build and run dependent on ASDK as a framework, proving the framework targets work.
Currently measurement always needs to happen on the main thread if implicit hierarchy management is enabled as adding and removing from nodes needs to happen on the main thread. We now will trampoline to the main thread to do the insertion and deletion of nodes.
This also resolves the issue that can occur if a node is already loaded deep in the layout hierarchy in the layout that the node is transforming to. Before insertion or deletion is happening we need to crawl the layout hierarchy to check that though.
* [ASDataController] Add some assertions to clarify what queues things happen on
* [ASCollectionDataController] Optimize willReloadData
* [ASDataController] Minor optimizations, no functional changes
* [ASDataController] Always reload data on _editingTransactionQueue
* [ASDataController] Remove async data fetching option, deprecate callbacks
* [ASDataController] Not mutable
* [ASMultidimensionalArrayUtils] Use fast enumeration
* Optimize ASMultidimensionalArrayUtils
* Fix some concurrency problems detected by Xcode 8's new Thread Sanitizer.
Some of these changes are arguably just to silence the warnings from Thread Sanitizer.
* Fix several memory leaks in the unit tests.
A number of the unit test source files are compield with `-fno-objc-arc`. This was clearly overlooked when writing several of the unit tests.
Fixed by (mostly) switching to use of `-autorelease` for the problem code.
NOTE: This commit doesn't fix all the memory leaks found. There's still at least one leak in `-[ASDisplayNodeTests testSetNeedsDataFetchImmediateState]`, and several leaks in `ASBasicImageDownloader.mm`. I wasn't able to find a trivial cause to these, unfortunately.
Currently within `ASCollectionView`, there is an assumption that there will always be a static number of supplementary views per section—even when additional items are added or removed from that section. This is evidenced by the fact that when you invoke -[ASCollectionView insertItemsAtIndexPaths:], the data source method -[ASCollectionDataSource collectionView:nodeForSupplementaryElementOfKind:atIndexPath:] is not invoked, preventing consumers from specifying a new number of supplementary nodes for the new set of items.
With this change, the set of supplementary nodes for a section is now recalculated not only on section-level mutations, but also on item-level mutations as well. This adds item-level counterparts to the section-level `-prepareFor...` subclassing hooks in `ASDataController+Subclasses.h` to make this possible.
This should fix#1278 and #1322
This has been tested in my project and seen to fix the assertion. Open to suggestions on how to test in a more universal way.
* make variable naming reflect ASEnvironmentTraitCollection vs ASTraitCollection
* move trait propagation to cell allocation instead of via a nested block
* move trait propagation when setting a displaynode's supernode instead of when adding a subnode
* fixed misspelling of "colection"
* Fixed bug in `ASEnvironmentMergeObjectAndState`
* New ASLayoutSpec methods for `setChild`/`setChildren`/`setChild:forIdentifier:` have been added to take in a trait collection.
* Added `setChild:`-like methods for ASLayoutSpecs take a traitCollection
* Fixed instances where nodes in a data controller were not getting their trait collections
* propagate traitCollection in ASDisplayNode on insertSubnode or addSubnode
