/
MaterialTimePickerCancels.kt
134 lines (126 loc) · 4.43 KB
/
MaterialTimePickerCancels.kt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/*
* Copyright 2021 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 android.content.DialogInterface
import androidx.annotation.CheckResult
import com.google.android.material.timepicker.MaterialTimePicker
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 when the user cancels the [MaterialTimePicker] via back button or a touch
* outside the view.
*
* *Note:* It is not called when the user clicks the cancel button. To add a listener for use when
* the user clicks the cancel button, use `negativeClicks` extension instead.
*
* @param scope Root coroutine scope
* @param capacity Capacity of the channel's buffer (no buffer by default)
* @param action An action to perform
*/
fun MaterialTimePicker.cancels(
scope: CoroutineScope,
capacity: Int = Channel.RENDEZVOUS,
action: suspend () -> Unit,
) {
val events = scope.actor<Unit>(Dispatchers.Main.immediate, capacity) {
for (ignored in channel) action()
}
val listener = listener(scope, events::trySend)
addOnCancelListener(listener)
events.invokeOnClose { removeOnCancelListener(listener) }
}
/**
* Perform an action when the user cancels the [MaterialTimePicker] via back button or a touch
* outside the view, inside new [CoroutineScope].
*
* *Note:* It is not called when the user clicks the cancel button. To add a listener for use when
* the user clicks the cancel button, use `negativeClicks` extension instead.
*
* @param capacity Capacity of the channel's buffer (no buffer by default)
* @param action An action to perform
*/
suspend fun MaterialTimePicker.cancels(
capacity: Int = Channel.RENDEZVOUS,
action: suspend () -> Unit,
) = coroutineScope {
cancels(this, capacity, action)
}
/**
* Create a channel which emits when the user cancels the [MaterialTimePicker] via back button or a
* touch outside the view.
*
* *Note:* It is not called when the user clicks the cancel button. To add a listener for use when
* the user clicks the cancel button, use `negativeClicks` extension instead.
*
* Example:
*
* ```
* launch {
* materialTimePicker.cancels(scope)
* .consumeEach { /* handle cancel event */ }
* }
* ```
*
* @param scope Root coroutine scope
* @param capacity Capacity of the channel's buffer (no buffer by default)
*/
@CheckResult
fun MaterialTimePicker.cancels(
scope: CoroutineScope,
capacity: Int = Channel.RENDEZVOUS,
): ReceiveChannel<Unit> = corbindReceiveChannel(capacity) {
val listener = listener(scope, ::trySend)
addOnCancelListener(listener)
invokeOnClose { removeOnCancelListener(listener) }
}
/**
* Create a flow which emits when the user cancels the [MaterialTimePicker] via back button or a
* touch outside the view.
*
* *Note:* It is not called when the user clicks the cancel button. To add a listener for use when
* the user clicks the cancel button, use `negativeClicks` extension instead.
*
* Example:
*
* ```
* materialTimePicker.cancels()
* .onEach { /* handle cancel event */ }
* .flowWithLifecycle(lifecycle)
* .launchIn(lifecycleScope) // lifecycle-runtime-ktx
* ```
*/
@CheckResult
fun MaterialTimePicker.cancels(): Flow<Unit> = channelFlow {
val listener = listener(this, ::trySend)
addOnCancelListener(listener)
awaitClose { removeOnCancelListener(listener) }
}
@CheckResult
private fun listener(
scope: CoroutineScope,
emitter: (Unit) -> Unit,
) = DialogInterface.OnCancelListener {
if (scope.isActive) emitter(Unit)
}