34 lines
1.2 KiB
Kotlin
34 lines
1.2 KiB
Kotlin
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
License, v. 2.0. If a copy of the MPL was not distributed with this
|
||
|
|
file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
|
|
||
|
|
package org.mozilla.fenix.components
|
||
|
|
|
||
|
|
import androidx.fragment.app.Fragment
|
||
|
|
import androidx.lifecycle.ViewModel
|
||
|
|
import androidx.lifecycle.ViewModelProvider
|
||
|
|
import androidx.lifecycle.ViewModelProviders
|
||
|
|
import androidx.lifecycle.get
|
||
|
|
import mozilla.components.lib.state.Action
|
||
|
|
import mozilla.components.lib.state.State
|
||
|
|
import mozilla.components.lib.state.Store
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Generic ViewModel to wrap a State object for state restoration
|
||
|
|
*/
|
||
|
|
@Suppress("UNCHECKED_CAST")
|
||
|
|
class StoreProvider<S : State, A : Action, T : Store<S, A>>(val store: T) : ViewModel() {
|
||
|
|
companion object {
|
||
|
|
fun <S : State, A : Action, T : Store<S, A>> get(fragment: Fragment, initialStore: T): T {
|
||
|
|
val factory = object : ViewModelProvider.Factory {
|
||
|
|
override fun <VM : ViewModel?> create(modelClass: Class<VM>): VM {
|
||
|
|
return StoreProvider(initialStore) as VM
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
val viewModel: StoreProvider<S, A, T> = ViewModelProviders.of(fragment, factory).get()
|
||
|
|
return viewModel.store
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|