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51 changes: 51 additions & 0 deletions
51
android-app/lynket-playground/src/main/java/arun/com/chromer/halo/Halo.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| /* | ||
| * | ||
| * Lynket | ||
| * | ||
| * Copyright (C) 2023 Arunkumar | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| package arun.com.chromer.halo | ||
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| import androidx.compose.runtime.Composable | ||
| import androidx.lifecycle.ViewModel | ||
| import androidx.lifecycle.viewModelScope | ||
| import app.cash.molecule.AndroidUiDispatcher | ||
| import app.cash.molecule.RecompositionMode | ||
| import app.cash.molecule.launchMolecule | ||
| import kotlinx.coroutines.CoroutineScope | ||
| import kotlinx.coroutines.flow.Flow | ||
| import kotlinx.coroutines.flow.MutableSharedFlow | ||
| import kotlinx.coroutines.flow.StateFlow | ||
| import kotlinx.coroutines.flow.asSharedFlow | ||
|
|
||
| /** | ||
| * UDF based ViewModel via Molecule | ||
| */ | ||
| abstract class HaloViewModel<Action, State> : ViewModel() { | ||
| private val scope = CoroutineScope(viewModelScope.coroutineContext + AndroidUiDispatcher.Main) | ||
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| private val actions = MutableSharedFlow<Action>() | ||
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| val state: StateFlow<State> by lazy(LazyThreadSafetyMode.NONE) { | ||
| scope.launchMolecule(mode = RecompositionMode.ContextClock) { | ||
| process(actions.asSharedFlow()) | ||
| } | ||
| } | ||
|
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| @Composable | ||
| protected abstract fun process(actions: Flow<Action>): State | ||
| } |
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77 changes: 77 additions & 0 deletions
77
android-app/lynket-playground/src/main/java/arun/com/chromer/home/HomeViewModel.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| /* | ||
| * | ||
| * Lynket | ||
| * | ||
| * Copyright (C) 2023 Arunkumar | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| package arun.com.chromer.home | ||
|
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| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.LaunchedEffect | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.runtime.setValue | ||
| import arun.com.chromer.halo.HaloViewModel | ||
| import com.deliveryhero.whetstone.viewmodel.ContributesViewModel | ||
| import kotlinx.coroutines.Dispatchers | ||
| import kotlinx.coroutines.delay | ||
| import kotlinx.coroutines.flow.Flow | ||
| import kotlinx.coroutines.flow.flow | ||
| import kotlinx.coroutines.withContext | ||
| import javax.inject.Inject | ||
|
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| sealed class HomeAction { | ||
| data object Load : HomeAction() | ||
| } | ||
|
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| sealed class HomeState { | ||
| data object Loading : HomeState() | ||
| data class Items(val items: List<String>) : HomeState() | ||
| } | ||
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| @ContributesViewModel | ||
| class HomeViewModel | ||
| @Inject | ||
| constructor() : HaloViewModel<HomeAction, HomeState>() { | ||
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| private val dummyItems by lazy { | ||
| flow { | ||
| delay(2000) | ||
| repeat(100) { | ||
| emit(it) | ||
| } | ||
| } | ||
| } | ||
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| @Composable | ||
| override fun process(actions: Flow<HomeAction>): HomeState { | ||
| var items by remember { mutableStateOf(emptyList<String>()) } | ||
| LaunchedEffect(Unit) { | ||
| withContext(Dispatchers.IO) { | ||
| dummyItems.collect { | ||
| items = items + it.toString() | ||
| } | ||
| } | ||
| } | ||
| return if (items.isEmpty()) { | ||
| HomeState.Loading | ||
| } else { | ||
| HomeState.Items(items) | ||
| } | ||
| } | ||
| } |