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A Swift and Kotlin library for making composable state machines, and UIs driven by those state machines.
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blakelee/workflow-kmp
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Workflow is an application framework that provides architectural primitives.
Workflow is:
- Written in and used for Kotlin and Swift
- A unidirectional data flow library that uses immutable data within each Workflow.Data flows in a single direction from source to UI, and events in a single directionfrom the UI to the business logic.
- A library that supports writing business logic and complex UI navigation logic asstate machines, thereby enabling confident reasoning about state and validation ofcorrectness.
- Optimized for composability and scalability of features and screens.
- Corresponding UI frameworks that bind Rendering data classes for “views”(including event callbacks) to Mobile UI frameworks for Android and iOS.
- A corresponding testing framework that facilitates simple-to-write unittests for all application business logic and helps ensure correctness.
1.0.0-rc is ready and the core is stable. There are still experimental /under construction areas of the API for UI integration however.These classes and functions are marked with@WorkflowUIExperimentalApi.They are suitable for production use (we've been shipping them for monthsat the very heart of our flagship app), but may require signature tweaks aswe iterate a bit more on Dialog management, and configuring transition effects.If they do change, we will take care to minimize the impact via deprecation, etc.
Artifacts are hosted on Maven Central. If you're using Gradle, ensuremavenCentral() appears inyourrepositories block, and then add dependencies on the following artifacts:
| Maven Coordinates | Depend on this if… |
|---|---|
com.squareup.workflow1:workflow-core-jvm:x.y.z | You are writing a library module/project that uses Workflows, but you don't need to interact with the runtime from the outside. |
com.squareup.workflow1:workflow-rx2:x.y.z | You need to interact with RxJava2 from your Workflows. |
com.squareup.workflow1:workflow-testing-jvm:x.y.z | You are writing tests. This should only be included as a test dependency. |
com.squareup.workflow1:workflow-ui-core-android:x.y.z | You're writing an Android app that uses Workflows. |
Most code shouldn't need to depend on these directly. They should generally only be used to buildhigher-level integrations with UI frameworks.
| Maven Coordinates | Depend on this if… |
|---|---|
com.squareup.workflow1:workflow-runtime-jvm:x.y.z | You need to interact directly with the runtime, i.e. streams of renderings and outputs. |
com.squareup.workflow1:workflow-ui-core-common-jvm:x.y.z | You are writing workflow-ui-android for another UI framework. Defines the core types used by that artifact. |
Jetpack Compose is the new UI toolkit for Android.It is comparable to SwiftUI for iOS. The main UI artifacts in this repository support standardAndroid Views, but various types of Compose integrations are provided under thecompose folder.
You'll find workflow + compose info and documentation there.
- Wondering why to use Workflow? See"Why Workflow"
- There is aGlossary of Terms
- We have aUser Guidedescribing core concepts.
- For Kotlin (and Android), there is a codelab styletutorial in the repo.
- For Swift (and iOS), there is also a Getting Startedtutorial in the repo.
- There are also a number ofKotlin samplesandSwift samples.
Workflow discussion happens in the Workflow Community slack. Use thisopen invitation.
Workflow maintainers also hang out in the#squarelibrarieschannel on theKotlin Slack.
SeeRELEASING.md.
Copyright 2019 Square Inc.Licensed under the Apache License, Version 2.0 (the "License");you may not use this file except in compliance with the License.You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0Unless required by applicable law or agreed to in writing, softwaredistributed under the License is distributed on an "AS IS" BASIS,WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.See the License for the specific language governing permissions andlimitations under the License.