-
Notifications
You must be signed in to change notification settings - Fork 17
/
StackInLazyColumnScreen.kt
133 lines (129 loc) · 5.34 KB
/
StackInLazyColumnScreen.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
package com.github.terrakok.modo.sample.screens.containers
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.IntrinsicSize
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.navigationBars
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.statusBars
import androidx.compose.foundation.layout.windowInsetsPadding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.rememberLazyListState
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.Button
import androidx.compose.material.FloatingActionButton
import androidx.compose.material.Icon
import androidx.compose.material.Scaffold
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.runtime.Composable
import androidx.compose.runtime.derivedStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.vector.rememberVectorPainter
import androidx.compose.ui.unit.dp
import com.github.terrakok.modo.ContainerScreen
import com.github.terrakok.modo.lazylist.screenItems
import com.github.terrakok.modo.list.ListNavModel
import com.github.terrakok.modo.list.ListNavigationAction
import com.github.terrakok.modo.list.ListNavigationState
import com.github.terrakok.modo.sample.components.CancelButton
import com.github.terrakok.modo.sample.screens.MainScreen
import kotlinx.parcelize.Parcelize
/**
* Sample of embedding screens inside LazyColumn.
*/
@Parcelize
class StackInLazyColumnScreen(
@Suppress("MagicNumber")
private val navModel: ListNavModel = ListNavModel(
buildList {
repeat(5) {
add(SampleStack(MainScreen(0)))
}
}
)
) : ContainerScreen<ListNavigationState, ListNavigationAction>(
navModel
) {
@Suppress("LongMethod")
@Composable
override fun Content(modifier: Modifier) {
val lazyColumnState = rememberLazyListState()
Scaffold(
floatingActionButton = {
FloatingActionButton(onClick = { dispatch(ListNavigationAction.Add(SampleStack(MainScreen(0)))) }) {
Icon(painter = rememberVectorPainter(image = Icons.Default.Add), contentDescription = "Add screen")
}
},
topBar = {
TopAppBar(
windowInsets = WindowInsets.statusBars,
title = {
Text(
text = "Stacks in LazyColumn",
)
}
)
},
drawerElevation = if (remember { derivedStateOf { lazyColumnState.firstVisibleItemIndex } }.value > 0) 16.dp else 0.dp
) {
LazyColumn(
state = lazyColumnState,
contentPadding = it,
verticalArrangement = Arrangement.spacedBy(16.dp)
) {
item {
Button(
modifier = Modifier
.padding(horizontal = 16.dp)
.fillMaxWidth(),
onClick = {
dispatch(ListNavigationAction.Add(pos = 0, SampleStack(MainScreen(0))))
}
) {
Text(text = "Add item", modifier = Modifier.align(Alignment.CenterVertically))
}
}
// A shortcat for items(navigationState.screens, key = { it.screenKey })
screenItems(navigationState.screens) { screen ->
Box {
InternalContent(
screen = screen,
modifier = Modifier
.padding(horizontal = 16.dp)
.height(IntrinsicSize.Min)
.clip(RoundedCornerShape(8.dp))
)
CancelButton(
onClick = { dispatch(ListNavigationAction.Remove(screen)) },
contentDescription = "Close screen",
modifier = Modifier
.align(Alignment.TopEnd)
.padding(16.dp),
)
}
}
item {
Button(
modifier = Modifier
.padding(horizontal = 16.dp)
.fillMaxWidth()
.windowInsetsPadding(WindowInsets.navigationBars),
onClick = {
dispatch(ListNavigationAction.Add(SampleStack(MainScreen(0))))
}
) {
Text(text = "Add item", modifier = Modifier.align(Alignment.CenterVertically))
}
}
}
}
}
}