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refactor: enhance lifecycle management of Rime
Migrate the abilities of RimeWrapper to RimeDaemon, the real Rime instance will be kept in RimeDaemon and shared via RimeSession
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package com.osfans.trime.core | ||
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| import android.os.Handler | ||
| import android.os.Looper | ||
| import androidx.core.os.HandlerCompat | ||
| import kotlinx.coroutines.Job | ||
| import kotlinx.coroutines.MainScope | ||
| import kotlinx.coroutines.flow.MutableStateFlow | ||
| import kotlinx.coroutines.flow.StateFlow | ||
| import kotlinx.coroutines.flow.asStateFlow | ||
| import kotlinx.coroutines.flow.launchIn | ||
| import kotlinx.coroutines.flow.onEach | ||
| import java.util.Collections | ||
|
|
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| class RimeLifecycleImpl : RimeLifecycle { | ||
| private val _stateFlow = MutableStateFlow(RimeLifecycle.State.STOPPED) | ||
| override val stateFlow = _stateFlow.asStateFlow() | ||
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|
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| override val handler = HandlerCompat.createAsync(Looper.getMainLooper()) | ||
| override val runnableList: MutableList<Runnable> = Collections.synchronizedList(mutableListOf<Runnable>()) | ||
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| fun emitState(state: RimeLifecycle.State) { | ||
| when (state) { | ||
| RimeLifecycle.State.STARTING -> { | ||
| checkAtState(RimeLifecycle.State.STOPPED) | ||
| _stateFlow.value = RimeLifecycle.State.STARTING | ||
| } | ||
| RimeLifecycle.State.READY -> { | ||
| checkAtState(RimeLifecycle.State.STARTING) | ||
| _stateFlow.value = RimeLifecycle.State.READY | ||
| } | ||
| RimeLifecycle.State.STOPPED -> { | ||
| checkAtState(RimeLifecycle.State.READY) | ||
| _stateFlow.value = RimeLifecycle.State.STOPPED | ||
| } | ||
| } | ||
| } | ||
|
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| private fun checkAtState(state: RimeLifecycle.State) = | ||
| takeIf { (_stateFlow.value == state) } | ||
| ?: throw IllegalStateException("Currently not at $state! Actual state is ${_stateFlow.value}") | ||
| } | ||
|
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| interface RimeLifecycle { | ||
| val stateFlow: StateFlow<State> | ||
| val handler: Handler | ||
| val runnableList: MutableList<Runnable> | ||
|
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| enum class State { | ||
| STARTING, | ||
| READY, | ||
| STOPPED, | ||
| } | ||
| } | ||
|
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| interface RimeLifecycleOwner { | ||
| val lifecycle: RimeLifecycle | ||
| val handler get() = lifecycle.handler | ||
| } | ||
|
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| fun RimeLifecycle.whenAtState( | ||
| state: RimeLifecycle.State, | ||
| block: () -> Unit, | ||
| ) { | ||
| runnableList.add(Runnable { block() }) | ||
| if (stateFlow.value == state) { | ||
| handler.post(runnableList.removeFirst()) | ||
| } else { | ||
| StateDelegate(this, state).run(block) | ||
| } | ||
| } | ||
|
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| inline fun RimeLifecycle.whenReady(noinline block: () -> Unit) = whenAtState(RimeLifecycle.State.READY, block) | ||
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| private class StateDelegate(val lifecycle: RimeLifecycle, val state: RimeLifecycle.State) { | ||
| private var job: Job? = null | ||
|
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| init { | ||
| job = | ||
| lifecycle.stateFlow.onEach { | ||
| if (it == state) { | ||
| while (lifecycle.runnableList.isNotEmpty()) { | ||
| lifecycle.handler.post(lifecycle.runnableList.removeFirst()) | ||
| } | ||
| } | ||
| }.launchIn(MainScope()) | ||
| } | ||
|
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| fun <T> run(block: () -> T): T { | ||
| job?.cancel() | ||
| job = null | ||
| return block() | ||
| } | ||
| } |
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