Ivan Iskandar
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package eu.kanade.tachiyomi.ui.home
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import androidx.activity.compose.BackHandler
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import androidx.compose.animation.AnimatedContent
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import androidx.compose.animation.AnimatedVisibility
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import androidx.compose.animation.expandVertically
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import androidx.compose.animation.shrinkVertically
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.Row
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import androidx.compose.foundation.layout.RowScope
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import androidx.compose.foundation.layout.WindowInsets
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import androidx.compose.foundation.layout.consumedWindowInsets
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import androidx.compose.foundation.layout.padding
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import androidx.compose.material3.Badge
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import androidx.compose.material3.BadgedBox
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import androidx.compose.material3.Icon
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import androidx.compose.material3.MaterialTheme
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import androidx.compose.material3.NavigationBarItem
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import androidx.compose.material3.NavigationRailItem
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import androidx.compose.material3.Text
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.CompositionLocalProvider
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import androidx.compose.runtime.LaunchedEffect
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.produceState
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import androidx.compose.runtime.rememberCoroutineScope
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.res.pluralStringResource
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import androidx.compose.ui.semantics.contentDescription
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import androidx.compose.ui.semantics.semantics
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import androidx.compose.ui.util.fastForEach
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import cafe.adriel.voyager.core.screen.Screen
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import cafe.adriel.voyager.navigator.LocalNavigator
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import cafe.adriel.voyager.navigator.currentOrThrow
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import cafe.adriel.voyager.navigator.tab.LocalTabNavigator
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import cafe.adriel.voyager.navigator.tab.TabNavigator
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import eu.kanade.domain.library.service.LibraryPreferences
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import eu.kanade.domain.source.service.SourcePreferences
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import eu.kanade.presentation.components.NavigationBar
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import eu.kanade.presentation.components.NavigationRail
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import eu.kanade.presentation.components.Scaffold
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import eu.kanade.presentation.util.Tab
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import eu.kanade.presentation.util.Transition
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import eu.kanade.presentation.util.isTabletUi
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import eu.kanade.tachiyomi.R
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import eu.kanade.tachiyomi.ui.browse.BrowseTab
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import eu.kanade.tachiyomi.ui.history.HistoryTab
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import eu.kanade.tachiyomi.ui.library.LibraryTab
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import eu.kanade.tachiyomi.ui.manga.MangaScreen
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import eu.kanade.tachiyomi.ui.more.MoreTab
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import eu.kanade.tachiyomi.ui.updates.UpdatesTab
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import kotlinx.coroutines.channels.Channel
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import kotlinx.coroutines.flow.collectLatest
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import kotlinx.coroutines.flow.combine
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import kotlinx.coroutines.flow.receiveAsFlow
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import kotlinx.coroutines.launch
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import uy.kohesive.injekt.Injekt
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import uy.kohesive.injekt.api.get
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object HomeScreen : Screen {
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private val librarySearchEvent = Channel<String>()
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private val openTabEvent = Channel<Tab>()
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private val showBottomNavEvent = Channel<Boolean>()
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private val tabs = listOf(
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LibraryTab,
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UpdatesTab,
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HistoryTab,
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BrowseTab(),
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MoreTab(),
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)
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@Composable
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override fun Content() {
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val navigator = LocalNavigator.currentOrThrow
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TabNavigator(
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tab = LibraryTab,
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) { tabNavigator ->
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// Provide usable navigator to content screen
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CompositionLocalProvider(LocalNavigator provides navigator) {
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Row(verticalAlignment = Alignment.CenterVertically) {
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if (isTabletUi()) {
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NavigationRail {
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tabs.fastForEach {
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NavigationRailItem(it)
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}
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}
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}
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Scaffold(
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bottomBar = {
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if (!isTabletUi()) {
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val bottomNavVisible by produceState(initialValue = true) {
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showBottomNavEvent.receiveAsFlow().collectLatest { value = it }
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}
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AnimatedVisibility(
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visible = bottomNavVisible,
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enter = expandVertically(),
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exit = shrinkVertically(),
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) {
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NavigationBar {
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tabs.fastForEach {
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NavigationBarItem(it)
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}
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}
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}
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}
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},
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contentWindowInsets = WindowInsets(0),
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) { contentPadding ->
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Box(
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modifier = Modifier
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.padding(contentPadding)
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.consumedWindowInsets(contentPadding),
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) {
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AnimatedContent(
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targetState = tabNavigator.current,
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transitionSpec = { Transition.OneWayFade },
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content = {
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tabNavigator.saveableState(key = "currentTab", it) {
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it.Content()
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}
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},
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)
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}
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}
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}
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}
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val goToLibraryTab = { tabNavigator.current = LibraryTab }
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BackHandler(
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enabled = tabNavigator.current != LibraryTab,
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onBack = goToLibraryTab,
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)
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LaunchedEffect(Unit) {
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launch {
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librarySearchEvent.receiveAsFlow().collectLatest {
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goToLibraryTab()
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LibraryTab.search(it)
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}
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}
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launch {
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openTabEvent.receiveAsFlow().collectLatest {
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tabNavigator.current = when (it) {
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is Tab.Library -> LibraryTab
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Tab.Updates -> UpdatesTab
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Tab.History -> HistoryTab
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is Tab.Browse -> BrowseTab(it.toExtensions)
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is Tab.More -> MoreTab(it.toDownloads)
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}
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if (it is Tab.Library && it.mangaIdToOpen != null) {
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navigator.push(MangaScreen(it.mangaIdToOpen))
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}
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}
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}
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}
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}
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}
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@Composable
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private fun RowScope.NavigationBarItem(tab: eu.kanade.presentation.util.Tab) {
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val tabNavigator = LocalTabNavigator.current
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val navigator = LocalNavigator.currentOrThrow
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val scope = rememberCoroutineScope()
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val selected = tabNavigator.current::class == tab::class
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NavigationBarItem(
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selected = selected,
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onClick = {
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if (!selected) {
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tabNavigator.current = tab
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} else {
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scope.launch { tab.onReselect(navigator) }
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}
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},
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icon = { NavigationIconItem(tab) },
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label = {
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Text(
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text = tab.options.title,
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style = MaterialTheme.typography.labelLarge,
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)
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},
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alwaysShowLabel = true,
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)
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}
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@Composable
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fun NavigationRailItem(tab: eu.kanade.presentation.util.Tab) {
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val tabNavigator = LocalTabNavigator.current
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val navigator = LocalNavigator.currentOrThrow
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val scope = rememberCoroutineScope()
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val selected = tabNavigator.current::class == tab::class
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NavigationRailItem(
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selected = selected,
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onClick = {
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if (!selected) {
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tabNavigator.current = tab
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} else {
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scope.launch { tab.onReselect(navigator) }
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}
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},
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icon = { NavigationIconItem(tab) },
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label = {
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Text(
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text = tab.options.title,
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style = MaterialTheme.typography.labelLarge,
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)
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},
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alwaysShowLabel = true,
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)
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}
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@Composable
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private fun NavigationIconItem(tab: eu.kanade.presentation.util.Tab) {
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BadgedBox(
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badge = {
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when {
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tab is UpdatesTab -> {
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val count by produceState(initialValue = 0) {
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val pref = Injekt.get<LibraryPreferences>()
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combine(
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pref.showUpdatesNavBadge().changes(),
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pref.unreadUpdatesCount().changes(),
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) { show, count -> if (show) count else 0 }
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.collectLatest { value = it }
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}
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if (count > 0) {
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Badge {
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val desc = pluralStringResource(
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id = R.plurals.notification_chapters_generic,
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count = count,
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count,
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)
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Text(
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text = count.toString(),
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modifier = Modifier.semantics { contentDescription = desc },
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)
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}
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}
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}
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BrowseTab::class.isInstance(tab) -> {
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val count by produceState(initialValue = 0) {
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Injekt.get<SourcePreferences>().extensionUpdatesCount().changes()
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.collectLatest { value = it }
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}
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if (count > 0) {
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Badge {
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val desc = pluralStringResource(
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id = R.plurals.update_check_notification_ext_updates,
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count = count,
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count,
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)
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Text(
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text = count.toString(),
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modifier = Modifier.semantics { contentDescription = desc },
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)
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}
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}
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}
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}
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},
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) {
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Icon(painter = tab.options.icon!!, contentDescription = tab.options.title)
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}
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}
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suspend fun search(query: String) {
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librarySearchEvent.send(query)
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}
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suspend fun openTab(tab: Tab) {
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openTabEvent.send(tab)
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}
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suspend fun showBottomNav(show: Boolean) {
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showBottomNavEvent.send(show)
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}
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sealed class Tab {
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data class Library(val mangaIdToOpen: Long? = null) : Tab()
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object Updates : Tab()
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object History : Tab()
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data class Browse(val toExtensions: Boolean = false) : Tab()
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data class More(val toDownloads: Boolean) : Tab()
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}
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}
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Reference in New Issue
Block a user