Add observeWithoutEffect method

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Wolf-Martell Montwé 2023-09-13 17:46:07 +02:00
parent 11b12f9c5e
commit 25accaf905
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2 changed files with 44 additions and 3 deletions

View file

@ -102,3 +102,45 @@ inline fun <reified STATE, EVENT, EFFECT> UnidirectionalViewModel<STATE, EVENT,
dispatch = dispatch,
)
}
/**
* Composable function that observes a UnidirectionalViewModel without handling side effects.
*
* Example usage:
* ```
* @Composable
* fun MyScreen(
* viewModel: MyUnidirectionalViewModel<MyState, MyEvent, MyEffect>,
* onNavigateNext: () -> Unit,
* onNavigateBack: () -> Unit,
* ) {
* val (state, dispatch) = viewModel.observeWithoutEffect()
*
* MyContent(
* onNextClick = {
* dispatch(MyEvent.OnNext)
* },
* onBackClick = {
* dispatch(MyEvent.OnBack)
* },
* state = state.value,
* )
* }
* ```
*
* @param STATE The type that represents the state of the ViewModel.
* @param EVENT The type that represents user actions that can occur and should be handled by the ViewModel.
*
* @return A [StateDispatch] containing the state and a dispatch function.
*/
@Composable
inline fun <reified STATE, EVENT, EFFECT> UnidirectionalViewModel<STATE, EVENT, EFFECT>
.observeWithoutEffect(): StateDispatch<STATE, EVENT> {
val collectedState = state.collectAsStateWithLifecycle()
val dispatch: (EVENT) -> Unit = { event(it) }
return StateDispatch(
state = collectedState,
dispatch = dispatch,
)
}

View file

@ -2,8 +2,8 @@ package app.k9mail.feature.account.server.validation.ui
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import app.k9mail.core.ui.compose.common.DevicePreviews
import app.k9mail.core.ui.compose.common.mvi.observeWithoutEffect
import app.k9mail.core.ui.compose.designsystem.template.Scaffold
import app.k9mail.core.ui.compose.theme.K9Theme
import app.k9mail.core.ui.compose.theme.ThunderbirdTheme
@ -21,8 +21,7 @@ internal fun ServerValidationMainScreen(
viewModel: ViewModel,
modifier: Modifier = Modifier,
) {
val state = viewModel.state.collectAsStateWithLifecycle()
val dispatch = { event: Event -> viewModel.event(event) }
val (state, dispatch) = viewModel.observeWithoutEffect()
Scaffold(
topBar = {