39 lines
1.3 KiB
Kotlin
39 lines
1.3 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.mvi
|
|
|
|
import io.reactivex.Observable
|
|
import io.reactivex.Observer
|
|
import io.reactivex.android.schedulers.AndroidSchedulers
|
|
import io.reactivex.disposables.Disposable
|
|
import io.reactivex.schedulers.Schedulers
|
|
|
|
abstract class UIComponent<S : ViewState, A : Action, C : Change>(
|
|
protected val actionEmitter: Observer<A>,
|
|
protected val changesObservable: Observable<C>
|
|
) {
|
|
|
|
abstract var initialState: S
|
|
abstract val reducer: Reducer<S, C>
|
|
|
|
open val uiView: UIView<S, A, C> by lazy { initView() }
|
|
|
|
abstract fun initView(): UIView<S, A, C>
|
|
open fun getContainerId() = uiView.containerId
|
|
/**
|
|
* Render the ViewState to the View through the Reducer
|
|
*/
|
|
fun render(reducer: Reducer<S, C>): Disposable =
|
|
internalRender(reducer)
|
|
.subscribe(uiView.updateView())
|
|
|
|
fun internalRender(reducer: Reducer<S, C>): Observable<S> =
|
|
changesObservable
|
|
.scan(initialState, reducer)
|
|
.distinctUntilChanged()
|
|
.subscribeOn(Schedulers.io())
|
|
.observeOn(AndroidSchedulers.mainThread())
|
|
}
|