/
MaterialDatePickerPositiveClicks.kt
118 lines (110 loc) · 3.79 KB
/
MaterialDatePickerPositiveClicks.kt
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/*
* Copyright 2019 Vladimir Raupov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ru.ldralighieri.corbind.material
import androidx.annotation.CheckResult
import com.google.android.material.datepicker.MaterialDatePicker
import com.google.android.material.datepicker.MaterialPickerOnPositiveButtonClickListener
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.channels.ReceiveChannel
import kotlinx.coroutines.channels.actor
import kotlinx.coroutines.channels.awaitClose
import kotlinx.coroutines.coroutineScope
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.channelFlow
import kotlinx.coroutines.isActive
import ru.ldralighieri.corbind.internal.corbindReceiveChannel
/**
* Perform an action on [MaterialDatePicker] positive button click.
*
* @param scope Root coroutine scope
* @param capacity Capacity of the channel's buffer (no buffer by default)
* @param action An action to perform
*/
fun <S> MaterialDatePicker<S>.positiveClicks(
scope: CoroutineScope,
capacity: Int = Channel.RENDEZVOUS,
action: suspend (S) -> Unit,
) {
val events = scope.actor<S>(Dispatchers.Main.immediate, capacity) {
for (selection in channel) action(selection)
}
val listener = listener(scope, events::trySend)
addOnPositiveButtonClickListener(listener)
events.invokeOnClose { removeOnPositiveButtonClickListener(listener) }
}
/**
* Perform an action on [MaterialDatePicker] positive button click, inside new [CoroutineScope].
*
* @param capacity Capacity of the channel's buffer (no buffer by default)
* @param action An action to perform
*/
suspend fun <S> MaterialDatePicker<S>.positiveClicks(
capacity: Int = Channel.RENDEZVOUS,
action: suspend (S) -> Unit,
) = coroutineScope {
positiveClicks(this, capacity, action)
}
/**
* Create a channel which emits on [MaterialDatePicker] positive button click.
*
* Example:
*
* ```
* launch {
* materialDatePicker.positiveClicks(scope)
* .consumeEach { /* handle positive button click */ }
* }
* ```
*
* @param scope Root coroutine scope
* @param capacity Capacity of the channel's buffer (no buffer by default)
*/
@CheckResult
fun <S> MaterialDatePicker<S>.positiveClicks(
scope: CoroutineScope,
capacity: Int = Channel.RENDEZVOUS,
): ReceiveChannel<S> = corbindReceiveChannel(capacity) {
val listener = listener(scope, ::trySend)
addOnPositiveButtonClickListener(listener)
invokeOnClose { removeOnPositiveButtonClickListener(listener) }
}
/**
* Create a flow which emits on [MaterialDatePicker] positive button click.
*
* Example:
*
* ```
* materialDatePicker.positiveClicks()
* .onEach { /* handle positive button click */ }
* .flowWithLifecycle(lifecycle)
* .launchIn(lifecycleScope) // lifecycle-runtime-ktx
* ```
*/
@CheckResult
fun <S> MaterialDatePicker<S>.positiveClicks(): Flow<S> = channelFlow {
val listener = listener(this, ::trySend)
addOnPositiveButtonClickListener(listener)
awaitClose { removeOnPositiveButtonClickListener(listener) }
}
@CheckResult
private fun <S> listener(
scope: CoroutineScope,
emitter: (S) -> Unit,
) = MaterialPickerOnPositiveButtonClickListener<S> { selection ->
if (scope.isActive) emitter(selection)
}