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• kmp-commons-jvm
• 0.0.1
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• RefreshFlow.kt

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commonMain.org.dbtools.kmp.commons.flow.RefreshFlow.kt Maven / Gradle / Ivy

@file:Suppress("unused")

package org.dbtools.kmp.commons.flow

import kotlinx.atomicfu.atomic
import kotlinx.coroutines.flow.AbstractFlow
import kotlinx.coroutines.flow.FlowCollector
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.emitAll

/**
 * A Flow that acts as a refresh emitter to restart other Flows.
 *
 * Example Usage:
 * private val refreshFlow = RefreshFlow()
 * val myDataFlow = refreshFlow.flatMapLatest {
 *    repository.getMyDataFromStoreFlow()
 * }
 *
 * fun refresh() {
 *    refreshFlow.refresh()
 * }
 */
class RefreshFlow : AbstractFlow() {
    private val refreshCount =  atomic(0)
    private val refreshCountFlow = MutableStateFlow(refreshCount.value)

    fun refresh() {
        refreshCountFlow.value = refreshCount.incrementAndGet()
    }

    override suspend fun collectSafely(collector: FlowCollector) {
        collector.emitAll(refreshCountFlow)
    }
}