Changelog

All notable changes to this project are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.8.0 - 2022-07-28

Added

• Added SwiftUIMeasurementContainer for calculating the ideal height of a UIView for wrapping for SwiftUI usage.
• Added MeasuringUIViewRepresentable as a convenience API for measuring a UIView within a UIViewRepresentable using an enclosing SwiftUIMeasurementContainer.
• Added a method to CollectionViewReorderingDelegate to check the reordering destination is expected.
• Added the ability to pass a CollectionViewConfiguration to the CollectionViewController initializers.
• Added additional sizing behaviors to SwiftUIMeasurementContainer for sizing UIViews hosted in a SwiftUI View.
• Added a static swiftUIView(…) method to UIView for hosting UIKit views that aren't EpoxyableViews while still leveraging the layout helpers.
• Added support for calling configure { _ in } on the SwiftUI View resulting from a swiftUIView(…) invocation to perform additional configuration of the UIView instance.
• Added LayoutGroupUpdateAnimation for customizing Group animated updates.
• Added support for WillDisplay callbacks to be added to type-erased AnyBarModel types.

Fixed

• Fixed sizing of reused EpoxySwiftUIHostingControllers on iOS 15.2+.
• Fixed crash in ScrollToItemHelper caused by preferredFrameRateRanges on devices running iOS 15.0 (this issue is not present in devices on 15.1+)
• Fixed an ambiguous layout issue when using LayoutSpacer without a fixedWidth or fixedHeight.
• Gracefully support cases where a SwiftUIMeasurementContainer with an intrinsicSize SwiftUIMeasurementContainerStrategy has an intrinsic size that exceeds the proposed size by compressing rather than overflowing, which could result in broken layouts.
• Fixed intrinsic size invalidation triggered by a SwiftUI view from within a collection view cell by invalidating the enclosing collection view layout.
• Fixed an issue where EpoxyLogger.shared.assertionFailure and EpoxyLogger.shared.assert would unexpectedly crash in release builds.

Changed

• Updated name of Spacer to LayoutSpacer to avoid name conflict with SwiftUI's Spacer
• Updated to have Swift 5.4 as the minimum supported Swift version (previously Swift 5.3).
• Updated HGroupView and VGroupView to have insetsLayoutMarginsFromSafeArea = false by default
• Gated an old autoresizing-mask-related bug workaround to only run on iOS versions 13 and below
• The swiftUIView(…) methods now default to an automatic sizing behavior that makes a best effort at sizing the view based on heuristics, rather than defaulting to intrinsic height and proposed width.

0.7.0 - 2021-12-09

Added

• Added a weak reference from TopBarContainer / BottomBarContainer to their parent bar installer
• Added a BarInstallerConfiguration type to allow both global and per-instance configuration of bar installers.
• Added an applyBars closure to BarInstallerConfiguration to allow consumers to configure when bars are applied to the underlying BarContainer by a bar installer, e.g. to defer bar model updates that might conflict with an in-flight shared element transition.
• Support for hitting 120 FPS on iPhone ProMotion displays when programmatically scrolling to an item in a collection view.
• Added itemModel(…), barModel(…) methods to host a SwiftUI View within an Epoxy container and the swiftUIView(…) method to host an EpoxyableView within a SwiftUI View
• Added a SwiftUI environment value for requesting size invalidation of the containing Epoxy collection view cell.

Fixed

• Fixes an issue that could cause CollectionView scroll animation frames to have an incorrect content offset when paired with a non-zero adjustedContentInset.
• Fixes an issue that could cause VGroupView and HGroupView to grow too tall when nested in containers that give them a larger height than their natural height.
• Fixes a bug in the KeyboardPositionWatcher that would consider an even slightly offscreen view as having a keyboard overlap when the keyboard is dismissed, resulting in incorrect keyboard offsets.
• Fixes an issue when mutating state synchronously does not pick up the current SwiftUI transaction.
• Fixes a bug where the avoidsKeyboard parameter would be disregarded in a BottomBarInstaller initializer.

Changed

• Removed the default bar installer behavior where bar model updates were deferred while a view controller transition is in progress.

0.6.0 - 2021-08-31

Added

• Added an insetMargins property to TopBarContainer and BottomBarContainer that configures whether or not the container sets layout margins derived from the safeAreaInsets of its viewController.

Fixed

• Fixed incorrect assertion logging when accessing an item with an invalid index path.
• Mitigated a EXC_BAD_ACCESS crash that caused by a bad nonnull bridge in CollectionViewCell.
• Fixed an issue where styles were not being used in the diffIdentifier calculation of GroupItems.

Changed

• The SectionModel initializer now requires a dataID to make it harder to have sections with duplicate identity that causes a runtime warning and potentially unexpected diffing behavior.

0.5.0 - 2021-06-23

Added

• Added an UpdateStrategy to CollectionView to allow specifying that it should update using non- animated performBatchUpdates(…), which can be more performant and behave more predictably than reloadData().
• Added reflowsForAccessibilityTypeSizes and forceVerticalAccessibilityLayout properties to HGroup.Style.

Fixed

• Improved CollectionView logic for deciding when to reloadData(…) over performBatchUpdates(…) in specific scenarios.
• Fixed an issue where the accessibilityAlignment property of HGroup was not being respected.
• Fixed an issue where accessibilityAlignment and horizontalAlignment would overwrite one another.
• Break a temporary retain cycle in .system presentation style

Changed

• CollectionViewConfiguration.usesBatchUpdatesForAllReloads now defaults to true.
• Changed CollectionViewConfiguration from an immutable class to a struct to make it easier to modify an existing configuration.

0.4.0 - 2021-05-17

Added

• Added an example with text field to show how can we use avoidsKeyboard feature
• Add EpoxyLayoutGroups, a declarative API for creating components

Fixed

• AnyItemModel is selectable when there are no DidSelect callbacks on the underlying model

0.3.0 - 2021-04-23

Added

• Added support for Array and Optional expressions to model result builders
• Added support for Optional expressions to PresentationModel result builders
• Made AnyItemModel and AnySupplementaryItemModel conform to DidChangeStateProviding, DidChangeStateProviding and SetBehaviorsProviding
• Made AnyItemModel, AnySupplementaryItemModel, and AnyBarModel conform to StyleIDProviding
• Adds a keyboardContentInsetAdjustment property to UIScrollView with the amount that the that its contentInset.bottom has been adjusted to accommodate for the keyboard by a KeyboardPositionWatcher
• Made ItemSelectionStyle conform to Hashable
• ReuseIDStore has a new method to vend a previously registered reuse ID, registeredReuseID(for:)

Fixed

• Bar installers gracefully handle redundant calls to install/uninstall
• CollectionView more gracefully handles styleID mutations after registration

Changed

• ReuseIDStore.registerReuseID(for:) has been renamed to ReuseIDStore.reuseID(byRegistering:)

0.2.0 - 2021-03-16

Added

• Added result builders for SectionModel, ItemModel, BarModel, PresentationModel, and NavigationModel
• Added initializers and methods to CollectionViewController that take an array of ItemModels and transparently wrap them in a SectionModel for consumers.

Changed

• Updated public let properties of public structs with memberwise initializers to be public var
• BarStackView now handles selection of bar models and can be used as an EpoxyableView
• The cases of BarStackView.ZOrder have been renamed to be more semantically accurate
• Enables CollectionView prefetching by default, as the issues preventing it from being enabled by default are now resolved in recent iOS versions
• Support animated moves in BarStackView
• Fixed ordering when inserting and removing bar models
• Crossfade between bars of the same view type with different style IDs in BarStackView

0.1.0 - 2021-02-01

Added

• Initial release of Epoxy