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[resources] Use cached value synchronously on web. (#4893)

The change speeds resources web rendering up by the reading a cached
value instantly by request (it was being dispatched to the end of the UI
queue in `LaunchedEffect`)

## Release Notes
### Features - Resources
- Speed resources web rendering up by the reading a cached value
instantly
pull/4901/head
Konstantin 6 months ago committed by GitHub
parent
commit
2305ea77ee
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  1. 37
      components/resources/library/src/webMain/kotlin/org/jetbrains/compose/resources/ResourceState.web.kt

37
components/resources/library/src/webMain/kotlin/org/jetbrains/compose/resources/ResourceState.web.kt

@ -1,10 +1,12 @@
package org.jetbrains.compose.resources
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.State
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import kotlinx.coroutines.CoroutineStart
import kotlinx.coroutines.launch
@Composable
internal actual fun <T> rememberResourceState(
@ -13,11 +15,14 @@ internal actual fun <T> rememberResourceState(
block: suspend (ResourceEnvironment) -> T
): State<T> {
val environment = LocalComposeEnvironment.current.rememberEnvironment()
val state = remember(key1) { mutableStateOf(getDefault()) }
LaunchedEffect(key1) {
state.value = block(environment)
val scope = rememberCoroutineScope()
return remember(key1) {
val mutableState = mutableStateOf(getDefault())
scope.launch(start = CoroutineStart.UNDISPATCHED) {
mutableState.value = block(environment)
}
mutableState
}
return state
}
@Composable
@ -28,11 +33,14 @@ internal actual fun <T> rememberResourceState(
block: suspend (ResourceEnvironment) -> T
): State<T> {
val environment = LocalComposeEnvironment.current.rememberEnvironment()
val state = remember(key1, key2) { mutableStateOf(getDefault()) }
LaunchedEffect(key1, key2) {
state.value = block(environment)
val scope = rememberCoroutineScope()
return remember(key1, key2) {
val mutableState = mutableStateOf(getDefault())
scope.launch(start = CoroutineStart.UNDISPATCHED) {
mutableState.value = block(environment)
}
mutableState
}
return state
}
@Composable
@ -44,9 +52,12 @@ internal actual fun <T> rememberResourceState(
block: suspend (ResourceEnvironment) -> T
): State<T> {
val environment = LocalComposeEnvironment.current.rememberEnvironment()
val state = remember(key1, key2, key3) { mutableStateOf(getDefault()) }
LaunchedEffect(key1, key2, key3) {
state.value = block(environment)
val scope = rememberCoroutineScope()
return remember(key1, key2, key3) {
val mutableState = mutableStateOf(getDefault())
scope.launch(start = CoroutineStart.UNDISPATCHED) {
mutableState.value = block(environment)
}
mutableState
}
return state
}
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