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SimpleReorderableLazyRowScreen.kt
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SimpleReorderableLazyRowScreen.kt
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package sh.calvin.reorderable.demo.ui
import androidx.compose.foundation.ExperimentalFoundationApi
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.lazy.LazyRow
import androidx.compose.foundation.lazy.itemsIndexed
import androidx.compose.foundation.lazy.rememberLazyListState
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.rounded.DragHandle
import androidx.compose.material3.Card
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.CustomAccessibilityAction
import androidx.compose.ui.semantics.clearAndSetSemantics
import androidx.compose.ui.semantics.customActions
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.unit.dp
import sh.calvin.reorderable.ReorderableItem
import sh.calvin.reorderable.demo.ReorderHapticFeedbackType
import sh.calvin.reorderable.demo.items
import sh.calvin.reorderable.demo.rememberReorderHapticFeedback
import sh.calvin.reorderable.rememberReorderableLazyListState
@OptIn(ExperimentalFoundationApi::class)
@Composable
fun SimpleReorderableLazyRowScreen() {
val haptic = rememberReorderHapticFeedback()
var list by remember { mutableStateOf(items) }
val lazyListState = rememberLazyListState()
val reorderableLazyRowState = rememberReorderableLazyListState(lazyListState) { from, to ->
list = list.toMutableList().apply {
add(to.index, removeAt(from.index))
}
haptic.performHapticFeedback(ReorderHapticFeedbackType.MOVE)
}
LazyRow(
modifier = Modifier.fillMaxSize(),
state = lazyListState,
contentPadding = PaddingValues(8.dp),
horizontalArrangement = Arrangement.spacedBy(8.dp),
) {
itemsIndexed(list, key = { _, item -> item.id }) { index, item ->
ReorderableItem(reorderableLazyRowState, item.id) {
val interactionSource = remember { MutableInteractionSource() }
Card(
onClick = {},
modifier = Modifier
.width(item.size.dp)
.height(128.dp)
.semantics {
customActions = listOf(
CustomAccessibilityAction(
label = "Move Left",
action = {
if (index > 0) {
list = list.toMutableList().apply {
add(index - 1, removeAt(index))
}
true
} else {
false
}
}
),
CustomAccessibilityAction(
label = "Move Right",
action = {
if (index < list.size - 1) {
list = list.toMutableList().apply {
add(index + 1, removeAt(index))
}
true
} else {
false
}
}
),
)
},
interactionSource = interactionSource,
) {
Column(
Modifier.fillMaxSize(),
horizontalAlignment = Alignment.CenterHorizontally,
verticalArrangement = Arrangement.SpaceBetween,
) {
IconButton(
modifier = Modifier
.draggableHandle(
onDragStarted = {
haptic.performHapticFeedback(ReorderHapticFeedbackType.START)
},
onDragStopped = {
haptic.performHapticFeedback(ReorderHapticFeedbackType.END)
},
interactionSource = interactionSource,
)
.clearAndSetSemantics { },
onClick = {},
) {
Icon(Icons.Rounded.DragHandle, contentDescription = "Reorder")
}
Text(item.text, Modifier.padding(8.dp))
}
}
}
}
}
}