Created
February 3, 2025 09:14
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DeclarativeModalBottomSheet
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| import androidx.compose.foundation.background | |
| import androidx.compose.foundation.layout.Box | |
| import androidx.compose.foundation.layout.Column | |
| import androidx.compose.foundation.layout.WindowInsets | |
| import androidx.compose.foundation.layout.WindowInsetsSides | |
| import androidx.compose.foundation.layout.asPaddingValues | |
| import androidx.compose.foundation.layout.fillMaxWidth | |
| import androidx.compose.foundation.layout.height | |
| import androidx.compose.foundation.layout.imePadding | |
| import androidx.compose.foundation.layout.navigationBars | |
| import androidx.compose.foundation.layout.only | |
| import androidx.compose.foundation.layout.padding | |
| import androidx.compose.foundation.layout.statusBarsPadding | |
| import androidx.compose.foundation.shape.RoundedCornerShape | |
| import androidx.compose.runtime.Composable | |
| import androidx.compose.runtime.LaunchedEffect | |
| import androidx.compose.runtime.mutableStateOf | |
| import androidx.compose.runtime.remember | |
| import androidx.compose.runtime.snapshotFlow | |
| import androidx.compose.ui.Alignment | |
| import androidx.compose.ui.Modifier | |
| import androidx.compose.ui.draw.clip | |
| import androidx.compose.ui.draw.shadow | |
| import androidx.compose.ui.graphics.Color | |
| import androidx.compose.ui.unit.dp | |
| import com.arkivanov.decompose.extensions.compose.subscribeAsState | |
| import com.arkivanov.decompose.router.slot.ChildSlot | |
| import com.arkivanov.decompose.value.Value | |
| import com.composables.core.BottomSheetScope | |
| import com.composables.core.DragIndication | |
| import com.composables.core.ModalBottomSheet | |
| import com.composables.core.ModalBottomSheetScope | |
| import com.composables.core.Scrim | |
| import com.composables.core.Sheet | |
| import com.composables.core.SheetDetent | |
| import com.composables.core.rememberModalBottomSheetState | |
| import com.flipperdevices.bsb.core.theme.LocalPallet | |
| import kotlinx.coroutines.flow.distinctUntilChanged | |
| import kotlinx.coroutines.flow.drop | |
| @Composable | |
| fun BSheetDragIndicator(modifier: Modifier = Modifier) { | |
| Box( | |
| modifier = modifier | |
| .height(5.dp) | |
| .fillMaxWidth(0.3f) | |
| .clip(RoundedCornerShape(100.dp)) | |
| .background(LocalPallet.current.transparent.whiteInvert.tertiary.copy(0.1f)) | |
| ) | |
| } | |
| @Composable | |
| fun ModalBottomSheetScope.BModalBottomSheetContent( | |
| background: Color = Color(0xFF1E1E1E), | |
| content: @Composable BottomSheetScope.() -> Unit | |
| ) { | |
| Scrim() | |
| Sheet( | |
| modifier = Modifier | |
| .padding(top = 12.dp) | |
| .statusBarsPadding() | |
| .padding( | |
| WindowInsets.navigationBars.only(WindowInsetsSides.Horizontal).asPaddingValues() | |
| ) | |
| .shadow(4.dp, RoundedCornerShape(topStart = 28.dp, topEnd = 28.dp)) | |
| .clip(RoundedCornerShape(topStart = 28.dp, topEnd = 28.dp)) | |
| .background(background) // todo | |
| .padding(horizontal = 24.dp) | |
| .fillMaxWidth() | |
| .imePadding(), | |
| ) { | |
| Column { | |
| DragIndication() | |
| Box( | |
| modifier = Modifier | |
| .fillMaxWidth() | |
| .padding(vertical = 24.dp), | |
| contentAlignment = Alignment.Center, | |
| content = { BSheetDragIndicator() } | |
| ) | |
| content.invoke(this@Sheet) | |
| } | |
| } | |
| } | |
| private val emptyContent: @Composable ModalBottomSheetScope.() -> Unit = { | |
| BModalBottomSheetContent { Box(Modifier) } | |
| } | |
| @Composable | |
| fun <C : Any> ModalBottomSheetSlot( | |
| initialDetent: SheetDetent = SheetDetent.Companion.Hidden, | |
| instance: C?, | |
| onDismiss: () -> Unit, | |
| content: @Composable ModalBottomSheetScope.(C) -> Unit | |
| ) { | |
| val childContent = remember { mutableStateOf(emptyContent) } | |
| val modalSheetState = rememberModalBottomSheetState( | |
| initialDetent = initialDetent | |
| ) | |
| LaunchedEffect(modalSheetState) { | |
| snapshotFlow { | |
| modalSheetState.targetDetent == SheetDetent.Companion.Hidden && | |
| modalSheetState.currentDetent == SheetDetent.Companion.Hidden && | |
| modalSheetState.isIdle | |
| } | |
| .distinctUntilChanged() | |
| .drop(1) | |
| .collect { isHidden -> | |
| if (isHidden) { | |
| onDismiss() | |
| } | |
| } | |
| } | |
| LaunchedEffect(instance) { | |
| if (instance == null && modalSheetState.currentDetent == SheetDetent.Companion.FullyExpanded) { | |
| modalSheetState.animateTo(SheetDetent.Companion.Hidden) | |
| childContent.value = emptyContent | |
| modalSheetState.jumpTo(SheetDetent.Companion.Hidden) | |
| } else if (instance != null && modalSheetState.currentDetent == SheetDetent.Companion.Hidden) { | |
| modalSheetState.animateTo(SheetDetent.Companion.FullyExpanded) | |
| childContent.value = { content(instance) } | |
| } | |
| } | |
| ModalBottomSheet( | |
| state = modalSheetState, | |
| content = { | |
| childContent.value.invoke(this) | |
| } | |
| ) | |
| } | |
| @Composable | |
| fun <C : Any, T : Any> ModalBottomSheetSlot( | |
| initialDetent: SheetDetent = SheetDetent.Companion.Hidden, | |
| slot: ChildSlot<C, T>, | |
| onDismiss: () -> Unit, | |
| content: @Composable ModalBottomSheetScope.(T) -> Unit | |
| ) { | |
| ModalBottomSheetSlot( | |
| initialDetent = initialDetent, | |
| instance = slot.child?.instance, | |
| onDismiss = onDismiss, | |
| content = content | |
| ) | |
| } | |
| @Composable | |
| fun <C : Any, T : Any> ModalBottomSheetSlot( | |
| initialDetent: SheetDetent = SheetDetent.Companion.Hidden, | |
| slot: Value<ChildSlot<C, T>>, | |
| onDismiss: () -> Unit, | |
| content: @Composable ModalBottomSheetScope.(T) -> Unit | |
| ) { | |
| ModalBottomSheetSlot( | |
| initialDetent = initialDetent, | |
| instance = slot.subscribeAsState().value.child?.instance, | |
| onDismiss = onDismiss, | |
| content = content | |
| ) | |
| } |
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