WideNavigationRail

WideNavigationRailCollapsedSample

@Preview
@Composable
fun WideNavigationRailCollapsedSample() {
    var selectedItem by remember { mutableIntStateOf(0) }
    val items = listOf("Home", "Search", "Settings")
    val selectedIcons = listOf(Icons.Filled.Home, Icons.Filled.Favorite, Icons.Filled.Star)
    val unselectedIcons =
        listOf(Icons.Outlined.Home, Icons.Outlined.FavoriteBorder, Icons.Outlined.StarBorder)
    WideNavigationRail {
        items.forEachIndexed { index, item ->
            WideNavigationRailItem(
                railExpanded = false,
                icon = {
                    Icon(
                        if (selectedItem == index) selectedIcons[index] else unselectedIcons[index],
                        contentDescription = null,
                    )
                },
                label = { Text(item) },
                selected = selectedItem == index,
                onClick = { selectedItem = index },
            )
        }
    }
}

WideNavigationRailExpandedSample

@Preview
@Composable
fun WideNavigationRailExpandedSample() {
    var selectedItem by remember { mutableIntStateOf(0) }
    val items = listOf("Home", "Search", "Settings")
    val selectedIcons = listOf(Icons.Filled.Home, Icons.Filled.Favorite, Icons.Filled.Star)
    val unselectedIcons =
        listOf(Icons.Outlined.Home, Icons.Outlined.FavoriteBorder, Icons.Outlined.StarBorder)
    WideNavigationRail(
        state = rememberWideNavigationRailState(initialValue = WideNavigationRailValue.Expanded)
    ) {
        items.forEachIndexed { index, item ->
            WideNavigationRailItem(
                railExpanded = true,
                icon = {
                    Icon(
                        if (selectedItem == index) selectedIcons[index] else unselectedIcons[index],
                        contentDescription = null,
                    )
                },
                label = { Text(item) },
                selected = selectedItem == index,
                onClick = { selectedItem = index },
            )
        }
    }
}

WideNavigationRailResponsiveSample

@OptIn(ExperimentalMaterial3Api::class)
@Preview
@Composable
fun WideNavigationRailResponsiveSample() {
    var selectedItem by remember { mutableIntStateOf(0) }
    val items = listOf("Home", "Search", "Settings")
    val selectedIcons = listOf(Icons.Filled.Home, Icons.Filled.Favorite, Icons.Filled.Star)
    val unselectedIcons =
        listOf(Icons.Outlined.Home, Icons.Outlined.FavoriteBorder, Icons.Outlined.StarBorder)
    val state = rememberWideNavigationRailState()
    val scope = rememberCoroutineScope()
    val headerDescription =
        if (state.targetValue == WideNavigationRailValue.Expanded) {
            "Collapse rail"
        } else {
            "Expand rail"
        }
    Row(Modifier.fillMaxWidth()) {
        WideNavigationRail(
            state = state,
            header = {
                // Header icon button should have a tooltip.
                TooltipBox(
                    positionProvider =
                        TooltipDefaults.rememberTooltipPositionProvider(
                            TooltipAnchorPosition.Above
                        ),
                    tooltip = { PlainTooltip { Text(headerDescription) } },
                    state = rememberTooltipState(),
                ) {
                    IconButton(
                        modifier =
                            Modifier.padding(start = 24.dp).semantics {
                                // The button must announce the expanded or collapsed state of the
                                // rail for accessibility.
                                stateDescription =
                                    if (state.currentValue == WideNavigationRailValue.Expanded) {
                                        "Expanded"
                                    } else {
                                        "Collapsed"
                                    }
                            },
                        onClick = {
                            scope.launch {
                                if (state.targetValue == WideNavigationRailValue.Expanded)
                                    state.collapse()
                                else state.expand()
                            }
                        },
                    ) {
                        if (state.targetValue == WideNavigationRailValue.Expanded) {
                            Icon(Icons.AutoMirrored.Filled.MenuOpen, headerDescription)
                        } else {
                            Icon(Icons.Filled.Menu, headerDescription)
                        }
                    }
                }
            },
        ) {
            items.forEachIndexed { index, item ->
                WideNavigationRailItem(
                    railExpanded = state.targetValue == WideNavigationRailValue.Expanded,
                    icon = {
                        val imageVector =
                            if (selectedItem == index) {
                                selectedIcons[index]
                            } else {
                                unselectedIcons[index]
                            }
                        Icon(imageVector = imageVector, contentDescription = null)
                    },
                    label = { Text(item) },
                    selected = selectedItem == index,
                    onClick = { selectedItem = index },
                )
            }
        }
        val textString =
            if (state.currentValue == WideNavigationRailValue.Expanded) {
                "Expanded"
            } else {
                "Collapsed"
            }
        Column {
            Text(modifier = Modifier.padding(16.dp), text = "Is animating: " + state.isAnimating)
            Text(modifier = Modifier.padding(16.dp), text = "The rail is $textString.")
            Text(
                modifier = Modifier.padding(16.dp),
                text =
                    "Note: This demo is best shown in portrait mode, as landscape mode" +
                        " may result in a compact height in certain devices. For any" +
                        " compact screen dimensions, use a Navigation Bar instead.",
            )
        }
    }
}