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CHANGELOG.md

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Changelog

[0.8.0] - TBD

  • Breaking: ActivityStoreContext.selectActivityEvents and StreamConfigurator.update now explicitly requires a non-null type. This allows Formula to be compatible with Kotlin 1.8
  • Breaking: Remove Integration and FragmentContract
  • Breaking: Remove Stream, StreamBuilder and StreamFormula
  • Breaking: Rewrite internals of formula action handling to enable inline re-evaluation. Lots of changes, can review them in #301
  • Breaking: Remove FragmentFlowState.activeKeys and FragmentFlowState.visibleKeys
  • Move Renderer and RenderView from formula core into formula-android module
  • Enable fine-grained control of dispatching via Plugin.defaultDispatcher, RuntimeConfig.defaultDispatcher, Transition.ExecutionType and Effect.Type.
  • Remove RxStream type alias.
  • Replace implementation function with a value
  • Breaking: Removed FlowFactory and Flow
  • Breaking: Replace FragmentStoreBuilder with FeaturesBuilder
  • Breaking: Rename FragmentFlowStore to FragmentStore, FragmentState to FragmentOutput, FragmentFlowState to FragmentState
  • Breaking: Making FeatureFactory into an abstract class and modifying the initialize API to use Params wrapper type

[0.7.1] - June 28, 2022

  • Breaking: Rename FragmentBindingBuilder to FragmentStoreBuilder
  • Breaking: Removed old com.instacart.formula.RxStream. Note: you should use com.instacart.formula.rxjava3.RxAction.
  • Breaking: Removed Formula.start() extension, use Formula.toObservable() extension instead.
  • Add FormulaContext.onEvent to replace FormulaContext.callback and FormulaContext.eventCallback
  • Add Kotlin coroutine support! New formula-coroutines module to provide toFlow() extension function and FlowStream.
  • Add Listener type to consolidate event handling types () -> Unit and (Event) -> Unit
  • Breaking: Rename and move FormulaContext.UpdateBuilder into StreamBuilder.
  • Breaking: Restructuring Transition type into Transition<State, Event> and Transition.Result<State>
  • Breaking: Make Formula abstract class instead of an interface.
  • Breaking: Introducing Snapshot type and changing evaluate signature.
  • Renaming Stream to Action (non-breaking change for now)
  • Add action.runAgain() extension function
  • Add action.cancelPrevious(previousAction) extension function
  • Add DelegateAction abstract class
  • Add child formula support for context.key scopes.
  • Add support for nested context.key calls.
  • Auto-index duplicate listener keys.

[0.7.0] - June 30, 2021

  • Breaking: Remove events(observable) { } utility function.
  • Removing rxjava3 from core module.
  • Moving key function into IFormula
  • Breaking: Remove state.noEffects() extension function. Use transition(state) instead.
  • Added StreamFormula and ObservableFormula.
  • Allow nullable formula state.
  • Breaking: Removing FormulaFragment.renderView() function
  • Breaking: Replace FormulaFragment.getFragmentContract() with getFragmentKey().
  • Breaking: Removing generic key parameter from KeyState.
  • Breaking: Removing generic parameter from FormulaFragment
  • Added new Feature API with FeatureFactory and other related classes.
  • Update ActivityStoreContext.isFragmentStarted and ActivityStoreContext.isFragmentResumed functions.
  • Breaking: Removed BackStackStore and BackStack.
  • Breaking: Removed SharedStateStore.
  • Breaking: Replacing FlowDeclaration and FlowIntegration with FlowFactory.
  • Added bind(myFeatureFactory) { component -> component.myFeatureDependency() } binding method.
  • Added bind(myFlowFactory) { component -> component.createMyFlowDependencies() } binding method.
  • Rename KeyState to FragmentState and move it to android package.
  • Move ActivityStoreContext into android package.
  • Move ActivityStore into android package.
  • Move FragmentId into android package.
  • Move FormulaAppCompatActivity into android package.
  • Move ActivityResult into android.events package.
  • Move FragmentKey into android package.
  • Move BaseFormulaFragment into android package.
  • Move DisposableScope into android package.
  • Move FormulaFragment into android package.
  • Move BackCallback into android package.
  • Move FragmentLifecycleEvent into android.events package.
  • Move Integration into android package.
  • Move FragmentLifecycleCallback into android package.
  • Move FragmentComponent into android package.
  • Move FragmentContract into android package.
  • Move FragmentFlowState into android package.
  • Move FragmentFlowStore into android package.
  • Breaking: Replaced formula.test(inputObservable) with formula.test().input()
  • Add TestFormulaObserver.assertNoErrors()
  • Added formula-android-compose module

[0.6.1] - November 18, 2020

  • Bugfix: Fix runtime ignoring Formula.key for the root formula.
  • [formula-android] Adding main thread check before notifying fragments.
  • Breaking: Crash when duplicate fragment contract is registered.
  • Migrated formula-android to use core Formula interface.
  • Breaking: Delete FlowStore and FlowState.
  • Adding formula-rxjava3 module.

[0.6.0] - July 27, 2020

  • Breaking: Changing from RxJava 2.x to RxJava 3.x
  • Change callback key type from String to Any.
  • Removed deprecated state() extension
  • Updated AndroidX appcompat to 1.1.0
  • Updated AndroidX fragment-ktx extensions to 1.2.1
  • Bugfix: Fix Stream.onTerminate causing illegal state exception.
  • Breaking: In formula-android, replacing lastEntry() with visibleState() in FragmentFlowState.
  • Allow down-casting ActivityStoreContext<MyActivity> to ActivityStoreContext<FragmentActivity>
  • Enable global fragment error logging.
  • Breaking: Replacing Renderer function render with invoke. You can now directly call renderer(value).
  • Breaking: Renaming RenderView property renderer to render.
  • Breaking: Replaced TestFormulaObserver.childInput functions with TestFormula.
  • Breaking: StatelessFormula no longer implements Formula, but rather implements IFormula.
  • Breaking: Removing child builder.
  • Breaking: Renaming Evaluation.renderModel to Evaluation.output.
  • Breaking: Moving child key into Formula and StatelessFormula interfaces.

[0.5.3] - December 10, 2019

  • Change child formula key from String to Any.

[0.5.2] - October 25, 2019

  • Maven central release

[0.5.2-alpha2] - October 22, 2019

  • Bugfix: Fix context.key exit scope logic.

[0.5.2-alpha1] - October 22, 2019

  • Breaking: Replacing message API with post transition side-effect block. #115

Before:

transition(state.copy()) {
  message(analytics::trackEvent)
}

After:

transition(state.copy()) {
  analytics.trackEvent()
}

[0.5.1] - October 7, 2019

  • Initial release.