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123
corbind-material/src/main/kotlin/ru/ldralighieri/corbind/material/RangeSliderTouches.kt
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| /* | ||
| * Copyright 2020 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.slider.RangeSlider | ||
| 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.corbindReceiveChannel | ||
| import ru.ldralighieri.corbind.safeOffer | ||
|
|
||
| /** | ||
| * Perform an action on touch tracking events for [RangeSlider]. | ||
| * | ||
| * @param scope Root coroutine scope | ||
| * @param capacity Capacity of the channel's buffer (no buffer by default) | ||
| * @param action An action to perform | ||
| */ | ||
| fun RangeSlider.touches( | ||
| scope: CoroutineScope, | ||
| capacity: Int = Channel.RENDEZVOUS, | ||
| action: suspend (Boolean) -> Unit | ||
| ) { | ||
| val events = scope.actor<Boolean>(Dispatchers.Main.immediate, capacity) { | ||
| for (event in channel) action(event) | ||
| } | ||
|
|
||
| val listener = listener(scope, events::offer) | ||
| addOnSliderTouchListener(listener) | ||
| events.invokeOnClose { removeOnSliderTouchListener(listener) } | ||
| } | ||
|
|
||
| /** | ||
| * Perform an action on touch tracking events for [RangeSlider], inside new [CoroutineScope]. | ||
| * | ||
| * @param capacity Capacity of the channel's buffer (no buffer by default) | ||
| * @param action An action to perform | ||
| */ | ||
| suspend fun RangeSlider.touches( | ||
| capacity: Int = Channel.RENDEZVOUS, | ||
| action: suspend (Boolean) -> Unit | ||
| ) = coroutineScope { | ||
| touches(this, capacity, action) | ||
| } | ||
|
|
||
| /** | ||
| * Create a channel of touch tracking events for [RangeSlider]. | ||
| * | ||
| * Example: | ||
| * | ||
| * ``` | ||
| * launch { | ||
| * rangeSlider.touches(scope) | ||
| * .consumeEach { /* handle touch tracking event */ } | ||
| * } | ||
| * ``` | ||
| * | ||
| * @param scope Root coroutine scope | ||
| * @param capacity Capacity of the channel's buffer (no buffer by default) | ||
| */ | ||
| @CheckResult | ||
| fun RangeSlider.touches( | ||
| scope: CoroutineScope, | ||
| capacity: Int = Channel.RENDEZVOUS | ||
| ): ReceiveChannel<Boolean> = corbindReceiveChannel(capacity) { | ||
| val listener = listener(scope, ::safeOffer) | ||
| addOnSliderTouchListener(listener) | ||
| invokeOnClose { removeOnSliderTouchListener(listener) } | ||
| } | ||
|
|
||
| /** | ||
| * Create a flow of touch tracking events for [RangeSlider]. | ||
| * | ||
| * Examples: | ||
| * | ||
| * ``` | ||
| * rangeSlider.touches() | ||
| * .onEach { /* handle touch tracking event */ } | ||
| * .launchIn(scope) | ||
| * ``` | ||
| */ | ||
| @CheckResult | ||
| fun RangeSlider.touches(): Flow<Boolean> = channelFlow { | ||
| val listener = listener(this, ::offer) | ||
| addOnSliderTouchListener(listener) | ||
| awaitClose { removeOnSliderTouchListener(listener) } | ||
| } | ||
|
|
||
| @CheckResult | ||
| private fun listener( | ||
| scope: CoroutineScope, | ||
| emitter: (Boolean) -> Unit | ||
| ) = object : RangeSlider.OnSliderTouchListener { | ||
|
|
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| override fun onStartTrackingTouch(slider: RangeSlider) { onEvent(true) } | ||
| override fun onStopTrackingTouch(slider: RangeSlider) { onEvent(false) } | ||
|
|
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| private fun onEvent(event: Boolean) { | ||
| if (scope.isActive) { emitter(event) } | ||
| } | ||
| } |
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