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Support constructor injection for view models
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65 changes: 65 additions & 0 deletions
65
app/src/main/java/com/bubelov/coins/dagger/ViewModelFactory.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* | ||
| * This is free and unencumbered software released into the public domain. | ||
| * | ||
| * Anyone is free to copy, modify, publish, use, compile, sell, or | ||
| * distribute this software, either in source code form or as a compiled | ||
| * binary, for any purpose, commercial or non-commercial, and by any | ||
| * means. | ||
| * | ||
| * In jurisdictions that recognize copyright laws, the author or authors | ||
| * of this software dedicate any and all copyright interest in the | ||
| * software to the public domain. We make this dedication for the benefit | ||
| * of the public at large and to the detriment of our heirs and | ||
| * successors. We intend this dedication to be an overt act of | ||
| * relinquishment in perpetuity of all present and future rights to this | ||
| * software under copyright law. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
| * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR | ||
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | ||
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
| * OTHER DEALINGS IN THE SOFTWARE. | ||
| * | ||
| * For more information, please refer to <https://unlicense.org> | ||
| */ | ||
|
|
||
| package com.bubelov.coins.dagger | ||
|
|
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| import android.arch.lifecycle.ViewModel | ||
| import android.arch.lifecycle.ViewModelProvider | ||
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| import javax.inject.Inject | ||
| import javax.inject.Provider | ||
| import javax.inject.Singleton | ||
|
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| @Singleton | ||
| class ViewModelFactory @Inject constructor( | ||
| private val creators: Map<Class<out ViewModel>, @JvmSuppressWildcards Provider<ViewModel>> | ||
| ) : ViewModelProvider.Factory { | ||
|
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| @Suppress("UNCHECKED_CAST") | ||
| override fun <T : ViewModel> create(modelClass: Class<T>): T { | ||
| var creator: Provider<out ViewModel>? = creators[modelClass] | ||
|
|
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| if (creator == null) { | ||
| for ((key, value) in creators) { | ||
| if (modelClass.isAssignableFrom(key)) { | ||
| creator = value | ||
| break | ||
| } | ||
| } | ||
| } | ||
|
|
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| if (creator == null) { | ||
| throw IllegalArgumentException("unknown model class " + modelClass) | ||
| } | ||
|
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| try { | ||
| return creator.get() as T | ||
| } catch (e: Exception) { | ||
| throw RuntimeException(e) | ||
| } | ||
| } | ||
| } |
46 changes: 46 additions & 0 deletions
46
app/src/main/java/com/bubelov/coins/dagger/ViewModelKey.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,46 @@ | ||
| /* | ||
| * This is free and unencumbered software released into the public domain. | ||
| * | ||
| * Anyone is free to copy, modify, publish, use, compile, sell, or | ||
| * distribute this software, either in source code form or as a compiled | ||
| * binary, for any purpose, commercial or non-commercial, and by any | ||
| * means. | ||
| * | ||
| * In jurisdictions that recognize copyright laws, the author or authors | ||
| * of this software dedicate any and all copyright interest in the | ||
| * software to the public domain. We make this dedication for the benefit | ||
| * of the public at large and to the detriment of our heirs and | ||
| * successors. We intend this dedication to be an overt act of | ||
| * relinquishment in perpetuity of all present and future rights to this | ||
| * software under copyright law. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
| * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR | ||
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | ||
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
| * OTHER DEALINGS IN THE SOFTWARE. | ||
| * | ||
| * For more information, please refer to <https://unlicense.org> | ||
| */ | ||
|
|
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| package com.bubelov.coins.dagger | ||
|
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| import android.arch.lifecycle.ViewModel | ||
|
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| import java.lang.annotation.Documented | ||
| import java.lang.annotation.ElementType | ||
| import java.lang.annotation.Retention | ||
| import java.lang.annotation.RetentionPolicy | ||
| import java.lang.annotation.Target | ||
|
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| import dagger.MapKey | ||
| import kotlin.reflect.KClass | ||
|
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| @Suppress("DEPRECATED_JAVA_ANNOTATION") | ||
| @Documented | ||
| @Target(ElementType.METHOD) | ||
| @Retention(RetentionPolicy.RUNTIME) | ||
| @MapKey | ||
| internal annotation class ViewModelKey(val value: KClass<out ViewModel>) |
46 changes: 46 additions & 0 deletions
46
app/src/main/java/com/bubelov/coins/dagger/ViewModelModule.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| /* | ||
| * This is free and unencumbered software released into the public domain. | ||
| * | ||
| * Anyone is free to copy, modify, publish, use, compile, sell, or | ||
| * distribute this software, either in source code form or as a compiled | ||
| * binary, for any purpose, commercial or non-commercial, and by any | ||
| * means. | ||
| * | ||
| * In jurisdictions that recognize copyright laws, the author or authors | ||
| * of this software dedicate any and all copyright interest in the | ||
| * software to the public domain. We make this dedication for the benefit | ||
| * of the public at large and to the detriment of our heirs and | ||
| * successors. We intend this dedication to be an overt act of | ||
| * relinquishment in perpetuity of all present and future rights to this | ||
| * software under copyright law. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
| * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR | ||
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | ||
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
| * OTHER DEALINGS IN THE SOFTWARE. | ||
| * | ||
| * For more information, please refer to <https://unlicense.org> | ||
| */ | ||
|
|
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| package com.bubelov.coins.dagger | ||
|
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| import dagger.Module | ||
| import android.arch.lifecycle.ViewModel | ||
| import dagger.multibindings.IntoMap | ||
| import dagger.Binds | ||
| import android.arch.lifecycle.ViewModelProvider | ||
| import com.bubelov.coins.ui.viewmodel.EditPlaceViewModel | ||
|
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| @Module | ||
| abstract class ViewModelModule { | ||
| @Binds | ||
| @IntoMap | ||
| @ViewModelKey(EditPlaceViewModel::class) // PROVIDE YOUR OWN MODELS HERE | ||
| internal abstract fun bindEditPlaceViewModel(dashboardViewModel: EditPlaceViewModel): ViewModel | ||
|
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| @Binds | ||
| internal abstract fun bindViewModelFactory(factory: ViewModelFactory): ViewModelProvider.Factory | ||
| } |
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