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121 changes: 98 additions & 23 deletions
121
...ain/kotlin/com/arkivanov/mvikotlin/sample/coroutines/shared/details/store/DetailsStore.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,29 +1,104 @@ | ||
| package com.arkivanov.mvikotlin.sample.coroutines.shared.details.store | ||
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|
||
| import com.arkivanov.mvikotlin.core.store.SimpleBootstrapper | ||
| import com.arkivanov.mvikotlin.core.store.Store | ||
| import com.arkivanov.mvikotlin.core.store.StoreFactory | ||
| import com.arkivanov.mvikotlin.core.utils.JvmSerializable | ||
| import com.arkivanov.mvikotlin.extensions.coroutines.CoroutineExecutorScope | ||
| import com.arkivanov.mvikotlin.extensions.coroutines.coroutineExecutorFactory | ||
| import com.arkivanov.mvikotlin.sample.database.TodoDatabase | ||
| import com.arkivanov.mvikotlin.sample.database.TodoItem | ||
| import com.arkivanov.mvikotlin.sample.coroutines.shared.details.store.DetailsStore.Intent | ||
| import com.arkivanov.mvikotlin.sample.coroutines.shared.details.store.DetailsStore.Label | ||
| import com.arkivanov.mvikotlin.sample.coroutines.shared.details.store.DetailsStore.State | ||
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|
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| internal interface DetailsStore : Store<Intent, State, Label> { | ||
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| // Serializable only for exporting events in Time Travel, no need otherwise. | ||
| sealed class Intent : JvmSerializable { | ||
| data class SetText(val text: String) : Intent() | ||
| data object ToggleDone : Intent() | ||
| data object Delete : Intent() | ||
| } | ||
|
|
||
| data class State( | ||
| val data: TodoItem.Data? = null, | ||
| val isFinished: Boolean = false, | ||
| ) : JvmSerializable // Serializable only for exporting events in Time Travel, no need otherwise. | ||
|
|
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| // Serializable only for exporting events in Time Travel, no need otherwise. | ||
| sealed class Label : JvmSerializable { | ||
| data class Changed(val id: String, val data: TodoItem.Data) : Label() | ||
| data class Deleted(val id: String) : Label() | ||
| } | ||
| import kotlinx.coroutines.launch | ||
| import kotlinx.coroutines.withContext | ||
| import kotlin.coroutines.CoroutineContext | ||
|
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| // Serializable only for exporting events in Time Travel, no need otherwise. | ||
| internal sealed class Intent : JvmSerializable { | ||
| data class SetText(val text: String) : Intent() | ||
| data object ToggleDone : Intent() | ||
| data object Delete : Intent() | ||
| } | ||
|
|
||
| internal data class State( | ||
| val data: TodoItem.Data? = null, | ||
| val isFinished: Boolean = false, | ||
| ) : JvmSerializable // Serializable only for exporting events in Time Travel, no need otherwise. | ||
|
|
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| // Serializable only for exporting events in Time Travel, no need otherwise. | ||
| internal sealed class Label : JvmSerializable { | ||
| data class Changed(val id: String, val data: TodoItem.Data) : Label() | ||
| data class Deleted(val id: String) : Label() | ||
| } | ||
|
|
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| // Serializable only for exporting events in Time Travel, no need otherwise. | ||
| private sealed class Msg : JvmSerializable { | ||
| data class Loaded(val data: TodoItem.Data) : Msg() | ||
| data object Finished : Msg() | ||
| data class TextChanged(val text: String) : Msg() | ||
| data object DoneToggled : Msg() | ||
| } | ||
|
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| private typealias ExecutorScope = CoroutineExecutorScope<State, Msg, Unit, Label> | ||
|
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| /** | ||
| * This builder function showcases the way of creating a [Store] using | ||
| * the DSL API and *without* a dedicated interface. | ||
| * This option may work better for smaller and simpler stores. | ||
| * The [Intent], [State] and [Label] classes are top-level, the returned | ||
| * type is just the generic [Store] interface. | ||
| */ | ||
| internal fun StoreFactory.detailsStore( | ||
| database: TodoDatabase, | ||
| mainContext: CoroutineContext, | ||
| ioContext: CoroutineContext, | ||
| itemId: String, | ||
| ): Store<Intent, State, Label> = | ||
| create<Intent, Unit, Msg, State, Label>( | ||
| name = "TodoDetailsStore", | ||
| initialState = State(), | ||
| bootstrapper = SimpleBootstrapper(Unit), | ||
| executorFactory = coroutineExecutorFactory(mainContext) { | ||
| fun ExecutorScope.save() { | ||
| val data = state().data ?: return | ||
| publish(Label.Changed(itemId, data)) | ||
|
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| launch(ioContext) { | ||
| database.save(itemId, data) | ||
| } | ||
| } | ||
|
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| onAction<Unit> { | ||
| launch { | ||
| val item: TodoItem? = withContext(ioContext) { database.get(itemId) } | ||
| dispatch(item?.data?.let(Msg::Loaded) ?: Msg.Finished) | ||
| } | ||
| } | ||
|
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| onIntent<Intent.SetText> { | ||
| dispatch(Msg.TextChanged(it.text)) | ||
| save() | ||
| } | ||
|
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| onIntent<Intent.ToggleDone> { | ||
| dispatch(Msg.DoneToggled) | ||
| save() | ||
| } | ||
|
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| onIntent<Intent.Delete> { | ||
| publish(Label.Deleted(itemId)) | ||
|
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| launch { | ||
| withContext(ioContext) { database.delete(itemId) } | ||
| dispatch(Msg.Finished) | ||
| } | ||
| } | ||
| }, | ||
| reducer = { msg: Msg -> | ||
| when (msg) { | ||
| is Msg.Loaded -> copy(data = msg.data) | ||
| is Msg.Finished -> copy(isFinished = true) | ||
| is Msg.TextChanged -> copy(data = data?.copy(text = msg.text)) | ||
| is Msg.DoneToggled -> copy(data = data?.copy(isDone = !data.isDone)) | ||
| } | ||
| }, | ||
| ) |
82 changes: 0 additions & 82 deletions
82
...lin/com/arkivanov/mvikotlin/sample/coroutines/shared/details/store/DetailsStoreFactory.kt
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