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LoxiaLiSA
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| package ceui.loxia | ||
|
|
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| import androidx.annotation.MainThread | ||
| import androidx.fragment.app.Fragment | ||
| import androidx.lifecycle.HasDefaultViewModelProviderFactory | ||
| import androidx.lifecycle.ViewModel | ||
| import androidx.lifecycle.ViewModelProvider | ||
| import androidx.lifecycle.ViewModelStore | ||
| import androidx.lifecycle.ViewModelStoreOwner | ||
| import androidx.lifecycle.viewmodel.CreationExtras | ||
| import kotlin.reflect.KClass | ||
|
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|
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|
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| @MainThread | ||
| public inline fun <reified VM : ViewModel> Fragment.keyedViewModels( | ||
| noinline keyPrefixProvider: ()->String, | ||
| noinline ownerProducer: () -> ViewModelStoreOwner = { this }, | ||
| noinline extrasProducer: (() -> CreationExtras)? = null, | ||
| noinline factoryProducer: (() -> ViewModelProvider.Factory)? = null | ||
| ): Lazy<VM> { | ||
| val owner by lazy(LazyThreadSafetyMode.NONE) { ownerProducer() } | ||
| return keyedCreateViewModelLazy( | ||
| keyPrefixProvider, | ||
| VM::class, | ||
| { owner.viewModelStore }, | ||
| { | ||
| extrasProducer?.invoke() | ||
| ?: (owner as? HasDefaultViewModelProviderFactory)?.defaultViewModelCreationExtras | ||
| ?: CreationExtras.Empty | ||
| }, | ||
| factoryProducer ?: { | ||
| (owner as? HasDefaultViewModelProviderFactory)?.defaultViewModelProviderFactory | ||
| ?: defaultViewModelProviderFactory | ||
| }) | ||
| } | ||
|
|
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| @MainThread | ||
| public fun <VM : ViewModel> Fragment.keyedCreateViewModelLazy( | ||
| keyPrefixProvider: ()->String, | ||
| viewModelClass: KClass<VM>, | ||
| storeProducer: () -> ViewModelStore, | ||
| extrasProducer: () -> CreationExtras = { defaultViewModelCreationExtras }, | ||
| factoryProducer: (() -> ViewModelProvider.Factory)? = null | ||
|
|
||
| ): Lazy<VM> { | ||
| val factoryPromise = factoryProducer ?: { | ||
| defaultViewModelProviderFactory | ||
| } | ||
| return KeyedViewModelLazy(keyPrefixProvider, viewModelClass, storeProducer, factoryPromise, extrasProducer) | ||
| } | ||
|
|
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| public class KeyedViewModelLazy<VM : ViewModel> @JvmOverloads constructor( | ||
| private val keyPrefixProvider: ()->String, | ||
| private val viewModelClass: KClass<VM>, | ||
| private val storeProducer: () -> ViewModelStore, | ||
| private val factoryProducer: () -> ViewModelProvider.Factory, | ||
| private val extrasProducer: () -> CreationExtras = { CreationExtras.Empty } | ||
| ) : Lazy<VM> { | ||
| private var cached: VM? = null | ||
|
|
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| override val value: VM | ||
| get() { | ||
| val viewModel = cached | ||
| return if (viewModel == null) { | ||
| val factory = factoryProducer() | ||
| val store = storeProducer() | ||
| val canonicalName: String = viewModelClass.java.canonicalName | ||
| ?: throw IllegalArgumentException("Local and anonymous classes can not be ViewModels") | ||
| ViewModelProvider( | ||
| store, | ||
| factory, | ||
| extrasProducer() | ||
| ).get("${keyPrefixProvider()} : $canonicalName", viewModelClass.java).also { | ||
| cached = it | ||
| } | ||
| } else { | ||
| viewModel | ||
| } | ||
| } | ||
|
|
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| override fun isInitialized(): Boolean = cached != null | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package ceui.loxia | ||
|
|
||
| import android.view.View | ||
| import androidx.fragment.app.Fragment | ||
| import androidx.fragment.app.findFragment | ||
| import kotlin.reflect.KClass | ||
|
|
||
| inline fun<reified InterfaceT> Fragment.sendAction(action: (receiver: InterfaceT)->Boolean) { | ||
| var received = false | ||
| var itr: Fragment? = this | ||
| while (itr != null) { | ||
| val receiver = itr as? InterfaceT | ||
| if (receiver != null && action(receiver)) { | ||
| received = true | ||
| break | ||
| } else { | ||
| itr = itr.parentFragment | ||
| } | ||
| } | ||
|
|
||
| if (!received) { | ||
| val receiver = this.activity as? InterfaceT | ||
| if (receiver != null) { | ||
| action(receiver) | ||
| } | ||
| } | ||
| } | ||
|
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| inline fun<reified InterfaceT> View.sendAction(action: (receiver: InterfaceT)->Boolean) { | ||
| val fragment = this.findFragment<Fragment>() | ||
| fragment.sendAction<InterfaceT>(action) | ||
| } | ||
|
|
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| inline fun <reified ActionReceiverT> Fragment.findActionReceiverOrNull(): ActionReceiverT? { | ||
| var itr: Fragment? = this | ||
| while (itr != null) { | ||
| val receiver = itr as? ActionReceiverT | ||
| if (receiver != null) { | ||
| return receiver | ||
| } else { | ||
| itr = itr.parentFragment | ||
| } | ||
| } | ||
|
|
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| return activity as? ActionReceiverT | ||
| } | ||
|
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|
|
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| inline fun<reified ActionReceiverT> View.findActionReceiverOrNull(): ActionReceiverT? { | ||
| val fragment = this.findFragmentOrNull<Fragment>() | ||
| return fragment?.findActionReceiverOrNull<ActionReceiverT>() | ||
| } | ||
|
|
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| inline fun<reified ActionReceiverT> View.findActionReceiver(): ActionReceiverT { | ||
| val fragment = this.findFragment<Fragment>() | ||
| return fragment.findActionReceiverOrNull<ActionReceiverT>()!! | ||
| } | ||
|
|
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| inline fun <reified F : Fragment> View.findFragmentOrNull(): F? { | ||
| return try { | ||
| val targetFragment = findFragment<Fragment>() | ||
| if (targetFragment is F) { | ||
| targetFragment as F | ||
| } else null | ||
| } catch (e: Exception) { | ||
| null | ||
| } | ||
| } |
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