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RXUtils.kt
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RXUtils.kt
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package com.rethinkbooks.utils
import android.content.Context
import android.databinding.ObservableField
import com.rethinkbooks.AsyncTaskReplacment.RxAsyncTask
import com.rethinkbooks.observables.*
import io.reactivex.*
import io.reactivex.android.schedulers.AndroidSchedulers
import io.reactivex.disposables.CompositeDisposable
import io.reactivex.schedulers.Schedulers
import timber.log.Timber
import java.util.concurrent.TimeUnit
/**
* Created by bradley.thome on 10/17/17.
*/
fun <T> CompositeDisposable.asyncMain(single: Single<T>): AsyncObserveResult<T, Throwable> {
val item = AsyncObserveResult<T, Throwable>()
add(single.delay(10, TimeUnit.MICROSECONDS).asyncMain.subscribe({
item.result = it
}, {
item.throwable = it
}))
return item
}
/**
* subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
*/
val <T> Single<T>.asyncMain: Single<T>
get() = this.subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
/**
* subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
*/
val <T> Observable<T>.asyncMain: Observable<T>
get() = this.subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
/**
* subscribeOn(Schedulers.io()).observeOn(Schedulers.io())
*/
val <T> Single<T>.async: Single<T>
get() = this.subscribeOn(Schedulers.io()).observeOn(Schedulers.io())
/**
* subscribeOn(Schedulers.io()).observeOn(Schedulers.io())
*/
val <T> Observable<T>.async: Observable<T>
get() = this.subscribeOn(Schedulers.io()).observeOn(Schedulers.io())
enum class AsyncType {
IO_MAIN, IO_IO, CURRENT_CURRENT, NEW_MAIN, NEW_NEW;
val subscribeOn
get() = when (this) {
IO_IO -> Schedulers.io()
IO_MAIN -> Schedulers.io()
NEW_MAIN -> Schedulers.newThread()
NEW_NEW -> Schedulers.newThread()
CURRENT_CURRENT -> Schedulers.io()
}
val observeOn
get() = when (this) {
IO_IO -> Schedulers.io()
IO_MAIN -> AndroidSchedulers.mainThread()
NEW_MAIN -> AndroidSchedulers.mainThread()
NEW_NEW -> Schedulers.newThread()
CURRENT_CURRENT -> Schedulers.io()
}
}
fun <T> Single<T>.async(asyncType: AsyncType): Single<T> {
return when (asyncType) {
AsyncType.CURRENT_CURRENT -> this
else -> subscribeOn(asyncType.subscribeOn).observeOn(asyncType.observeOn)
}
}
fun <T> Single<T>.asyncResult(asyncType: AsyncType = AsyncType.IO_MAIN, compositeDisposable: CompositeDisposable = CompositeDisposable()): AsyncObserveResult<T, Throwable> {
val item = AsyncObserveResult<T, Throwable>()
compositeDisposable.add(delay(10, TimeUnit.MICROSECONDS).async(asyncType).subscribe({
item.result = it
}, {
item.throwable = it
}))
return item
}
class RetrofitResult<T : Any?> : AsyncObserveResult<T, Throwable>()
open class AsyncObserveResult<T : Any?, ERROR : Any?>() {
val isSuccessful
get() = when (throwable) {
null -> false
else -> true
}
var result: T? = null
set(value) {
field = value
successFun?.let {
field?.apply(it)
successFun = null
}
}
var throwable: ERROR? = null
set(value) {
field = value
failFun?.let {
field?.apply(it)
failFun = null
}
}
private var successFun: ((T) -> Unit)? = null
private var failFun: ((ERROR) -> Unit)? = null
fun ifSuccessful(success: (T) -> Unit): AsyncObserveResult<T, ERROR> {
if (result != null) {
result?.let(success)
} else {
successFun = success
}
return this;
}
fun ifFail(fail: (ERROR) -> Unit): AsyncObserveResult<T, ERROR> {
if (throwable != null) {
throwable?.let(fail)
} else {
failFun = fail
}
return this;
}
fun ifFail(failResult: AsyncObserveResult<*, ERROR>): AsyncObserveResult<T, ERROR> {
return ifFail {
failResult.throwable = it
}
}
fun ifSuccessful(successResult: AsyncObserveResult<T, *>): AsyncObserveResult<T, ERROR> {
return ifSuccessful {
successResult.result = it
}
}
}
fun <T> Single<T>.subscribe(asyncType: AsyncType, compositeDisposable: CompositeDisposable = CompositeDisposable()): AsyncObserveResult<T, Throwable> {
val asyncResult = AsyncObserveResult<T, Throwable>()
compositeDisposable.add(delay(10, TimeUnit.MICROSECONDS).async(asyncType).subscribe({
asyncResult.result = it
}, {
asyncResult.throwable = it
}))
return asyncResult
}
fun <T> CompositeDisposable.subscribe(observableField: ObservableField<T>, subscription: (T) -> Unit) = subscribe(observableField, false, subscription)
fun <T> CompositeDisposable.subscribe(observableField: ObservableField<T>, throwOnError: Boolean, subscription: (T) -> Unit) {
add(observableField.rxObservable.subscribe({
try {
subscription(it)
} catch (e: Exception) {
throw e
}
}, {
Timber.e(it)
"RX_ERROR for $observableField : $it".timber.e
if (throwOnError) throw it
}))
}
fun <T> ObservableField<T>.subscribe(compositeDisposable: CompositeDisposable, subscription: (T) -> Unit) = subscribe(compositeDisposable, false, subscription)
fun <T> ObservableField<T>.subscribe(compositeDisposable: CompositeDisposable, throwOnError: Boolean, subscription: (T) -> Unit) {
compositeDisposable.add(rxObservable.subscribe({
try {
subscription(it)
} catch (e: Exception) {
throw e
}
}, {
Timber.e(it)
"RX_ERROR : $it".timber.e
if (throwOnError) throw it
}))
}
fun <T> ObservableField<T>.subscribe(subscription: (T) -> Unit) {
addOnPropertyChangedCallback(object : android.databinding.Observable.OnPropertyChangedCallback() {
override fun onPropertyChanged(p0: android.databinding.Observable?, p1: Int) {
subscription([email protected]())
}
})
}
fun <T> Observe<T>.subscribe(observe: Observe<T>, ifTrue: (item: T) -> Boolean = { true }) {
addOnPropertyChangedCallback(object : android.databinding.Observable.OnPropertyChangedCallback() {
override fun onPropertyChanged(p0: android.databinding.Observable?, p1: Int) {
if (ifTrue(item)) {
observe set item
}
}
})
}
fun <T> (() -> T).asyncResult(asyncType: AsyncType = AsyncType.IO_MAIN, compositeDisposable: CompositeDisposable = CompositeDisposable()): AsyncObserveResult<T, Throwable> {
return Single.create<T> {
try {
it.onSuccess(this())
} catch (e: Exception) {
it.onError(e)
}
}.asyncResult(asyncType, compositeDisposable)
}
val <T> ObservableField<T>.rxObservable: Observable<T>
get() {
return Observable.create({ emitter ->
val callback = object : android.databinding.Observable.OnPropertyChangedCallback() {
override fun onPropertyChanged(dataBindingObservable: android.databinding.Observable, propertyId: Int) {
if (dataBindingObservable === this@rxObservable) {
emitter.onNext([email protected]())
}
}
}
[email protected](callback)
emitter.setCancellable({ [email protected](callback) })
})
}
val <T> T.observe: Observe<T>
get() = Observe(this)
val <T> T.observeNull
get() = Observe<T?>(this)
inline fun <reified T> observeItem(item: T? = null, clazz: Class<T> = T::class.java) = Observe<T?>(item)
val <T> T.rxObservable: Observable<T>
get() = Observable.just(this)
val <T> T.rxSingle: Single<T>
get() = Single.just(this)
fun delay(delay: Long, unit: TimeUnit = TimeUnit.MILLISECONDS, callback: () -> Unit) = Completable.timer(delay, unit, AndroidSchedulers.mainThread()).subscribe(callback)
fun CompositeDisposable.delay(delay: Long, unit: TimeUnit = TimeUnit.MILLISECONDS, callback: () -> Unit) = add(com.rethinkbooks.utils.delay(delay, unit, callback))
fun <T> Observable<T>.subscribeSuccess(action: (T) -> Unit) = this.subscribe(action)
fun <T> Single<T>.subscribeSuccess(action: (T) -> Unit) = this.subscribe(action)
class RxObservableUpdate<T>(val item: T) {
lateinit var emitter: ObservableEmitter<T>
private set
val rxObservable: Observable<T>
init {
rxObservable = Observable.create<T> {
emitter = it
}
}
fun <I> observe(initialValue: I, preSetter: (I) -> I = { it }, onChanged: (I) -> Unit = {}): Observe<I> {
return Observe(initialValue).apply {
this.preSetter(preSetter)
this.onChanged(onChanged)
}
}
}
/*
open class OnChangeDelegate<T>(item: T) : ObservableProperty<T>(item) {
open var observableField: Observe<T> = Observe(item)
open var onlyUpdateIfValueChanged = true
override fun beforeChange(property: KProperty<*>, oldValue: T, newValue: T): Boolean {
val attemptedNewValue = observableField.customSetter?.let { it(newValue) } ?: newValue
if (onlyUpdateIfValueChanged && oldValue == attemptedNewValue) return false
return true
}
override fun afterChange(property: KProperty<*>, oldValue: T, newValue: T) {
super.afterChange(property, oldValue, newValue)
observableField.apply {
set(newValue)
}
}
fun addOnPropertyChangedCallback(onChanged: (T) -> Unit): OnChangeDelegate<T> {
observableField.addOnPropertyChangedCallback(onChanged)
return this
}
fun syncWithObserve(onChanged: Observe<T>): OnChangeDelegate<T> {
observableField.addOnPropertyChangedCallback {
onChanged set it
}
return this
}
fun preSetter(preSetter: (T) -> T): OnChangeDelegate<T> {
observableField.preSetter(preSetter)
return this
}
fun customGetter(customGetter: (T) -> T): OnChangeDelegate<T> {
observableField.preGetter(customGetter)
return this
}
fun onChangedValues(postSetter: (item: T, oldItem: T) -> Unit): OnChangeDelegate<T> {
observableField.configPostSetter(postSetter)
return this
}
fun onChanged(postSetter: (item: T) -> Unit): OnChangeDelegate<T> {
observableField.addOnPropertyChangedCallback { postSetter(it) }
return this
}
fun acceptChange(acceptChange: (currentItem: T, newItem: T) -> Boolean): OnChangeDelegate<T> {
observableField.acceptChange = acceptChange
return this
}
override fun getValue(thisRef: Any?, property: KProperty<*>): T {
val item = super.getValue(thisRef, property)
return observableField.customGetter?.let { it(item) } ?: item
}
}
val <T> T.changeDelegate
get() = OnChangeDelegate<T>(this)
*/
object CustomDelegates {
fun <T> observe(item: T) = Observe<T>(item)
}
fun <SETTER, GETTER> SETTER.formattedObserve(formattedGetter: (SETTER) -> GETTER, formattedSetter: (GETTER) -> SETTER): Observe<SETTER> {
return FormattedObserve<SETTER, GETTER>(this, formattedGetter, formattedSetter)
}
fun <T> createSingle(creator: (SingleEmitter<T>) -> Unit): Single<T> {
return Single.create<T>(creator)
}
val <T> (() -> T).single
get() = Single.create<T> { it.onSuccess(this()) }
interface CompositeDisposableInterface {
val compositeDisposable: CompositeDisposable
fun <T> Observe<T>.onChanged(action: (T) -> Unit): Observe<T> {
compositeDisposable.subscribe(this, action)
return this
}
fun <T> Observe<T>.updateFrom(observe: Observe<T>): Observe<T> {
observe.onChanged {
this set it
}
return this
}
fun <T> ObservableFieldItemAction<T>.onChanged(action: (T) -> Unit): ObservableFieldItemAction<T> {
this.observe(compositeDisposable, action)
return this
}
fun <T> ObservableField<T>.subscribe(subscription: (T) -> Unit) {
compositeDisposable.subscribe(this, subscription)
}
fun <Params> RxAsyncTask<Params, *, *>.execute(vararg params: Params) {
this.disposable(compositeDisposable).run(*params)
}
fun Network.hasNetwork(context: Context, callback: (NetworkStatus) -> Unit) = hasNetwork(context, compositeDisposable, callback)
fun <T> ActionItem<T>.subscribe(sub: (T) -> Unit) {
this.observe(compositeDisposable, sub)
}
fun <T> ActionItem<T>.onChanged(action: (T) -> Unit) = onActionTaken(action)
fun <T> ActionItem<T>.onActionTaken(action: (T) -> Unit): ActionItem<T> {
this.observe(compositeDisposable, action)
return this
}
fun Action.onActionTaken(action: () -> Unit): Action {
this.observe(compositeDisposable) {
action()
}
return this
}
fun <T> Single<T>.asyncResult(asyncType: AsyncType = AsyncType.IO_MAIN) = this.asyncResult(asyncType, compositeDisposable)
}