tachiyomi/app/src/main/java/eu/kanade/presentation/components/TabbedScreen.kt
Ivan Iskandar d97eab0328
Move app state banner to the very top (#8706)
This moves the banners to the root composable and so eliminates the need to
track the app states in every screen.
2022-12-09 11:20:13 -05:00

101 lines
3.7 KiB
Kotlin

package eu.kanade.presentation.components
import androidx.annotation.StringRes
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.calculateEndPadding
import androidx.compose.foundation.layout.calculateStartPadding
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.SnackbarHost
import androidx.compose.material3.SnackbarHostState
import androidx.compose.material3.Tab
import androidx.compose.material3.TabRow
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalLayoutDirection
import androidx.compose.ui.res.stringResource
import kotlinx.coroutines.launch
@Composable
fun TabbedScreen(
@StringRes titleRes: Int,
tabs: List<TabContent>,
startIndex: Int? = null,
searchQuery: String? = null,
onChangeSearchQuery: (String?) -> Unit = {},
) {
val scope = rememberCoroutineScope()
val state = rememberPagerState()
val snackbarHostState = remember { SnackbarHostState() }
LaunchedEffect(startIndex) {
if (startIndex != null) {
state.scrollToPage(startIndex)
}
}
Scaffold(
topBar = {
val tab = tabs[state.currentPage]
val searchEnabled = tab.searchEnabled
SearchToolbar(
titleContent = { AppBarTitle(stringResource(titleRes)) },
searchEnabled = searchEnabled,
searchQuery = if (searchEnabled) searchQuery else null,
onChangeSearchQuery = onChangeSearchQuery,
actions = { AppBarActions(tab.actions) },
)
},
snackbarHost = { SnackbarHost(hostState = snackbarHostState) },
) { contentPadding ->
Column(
modifier = Modifier.padding(
top = contentPadding.calculateTopPadding(),
start = contentPadding.calculateStartPadding(LocalLayoutDirection.current),
end = contentPadding.calculateEndPadding(LocalLayoutDirection.current),
),
) {
TabRow(
selectedTabIndex = state.currentPage,
indicator = { TabIndicator(it[state.currentPage]) },
) {
tabs.forEachIndexed { index, tab ->
Tab(
selected = state.currentPage == index,
onClick = { scope.launch { state.animateScrollToPage(index) } },
text = { TabText(text = stringResource(tab.titleRes), badgeCount = tab.badgeNumber) },
unselectedContentColor = MaterialTheme.colorScheme.onSurface,
)
}
}
HorizontalPager(
count = tabs.size,
modifier = Modifier.fillMaxSize(),
state = state,
verticalAlignment = Alignment.Top,
) { page ->
tabs[page].content(
PaddingValues(bottom = contentPadding.calculateBottomPadding()),
snackbarHostState,
)
}
}
}
}
data class TabContent(
@StringRes val titleRes: Int,
val badgeNumber: Int? = null,
val searchEnabled: Boolean = false,
val actions: List<AppBar.Action> = emptyList(),
val content: @Composable (contentPadding: PaddingValues, snackbarHostState: SnackbarHostState) -> Unit,
)