Use Compose on BrowseSourceScreens (#7901)
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Andreas
GitHub
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package eu.kanade.presentation.browse
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import androidx.compose.foundation.layout.PaddingValues
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import androidx.compose.foundation.layout.navigationBarsPadding
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import androidx.compose.foundation.lazy.grid.GridCells
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import androidx.compose.material.icons.Icons
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import androidx.compose.material.icons.outlined.FilterList
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import androidx.compose.material3.Icon
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import androidx.compose.material3.SnackbarDuration
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import androidx.compose.material3.SnackbarHost
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import androidx.compose.material3.SnackbarHostState
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import androidx.compose.material3.SnackbarResult
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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.LaunchedEffect
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import androidx.compose.runtime.State
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import androidx.compose.runtime.getValue
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import androidx.compose.runtime.remember
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.platform.LocalContext
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import androidx.compose.ui.platform.LocalUriHandler
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import androidx.compose.ui.res.stringResource
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import androidx.paging.LoadState
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import androidx.paging.compose.LazyPagingItems
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import androidx.paging.compose.collectAsLazyPagingItems
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import eu.kanade.domain.manga.model.Manga
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import eu.kanade.presentation.browse.components.BrowseSourceComfortableGrid
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import eu.kanade.presentation.browse.components.BrowseSourceCompactGrid
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import eu.kanade.presentation.browse.components.BrowseSourceList
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import eu.kanade.presentation.browse.components.BrowseSourceToolbar
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import eu.kanade.presentation.components.EmptyScreen
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import eu.kanade.presentation.components.ExtendedFloatingActionButton
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import eu.kanade.presentation.components.Scaffold
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import eu.kanade.tachiyomi.R
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import eu.kanade.tachiyomi.source.CatalogueSource
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import eu.kanade.tachiyomi.source.LocalSource
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import eu.kanade.tachiyomi.source.online.HttpSource
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import eu.kanade.tachiyomi.ui.browse.source.browse.BrowseSourcePresenter
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import eu.kanade.tachiyomi.ui.browse.source.browse.NoResultsException
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import eu.kanade.tachiyomi.ui.library.setting.LibraryDisplayMode
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import eu.kanade.tachiyomi.ui.more.MoreController
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import eu.kanade.tachiyomi.ui.webview.WebViewActivity
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import eu.kanade.tachiyomi.widget.EmptyView
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@Composable
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fun BrowseSourceScreen(
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presenter: BrowseSourcePresenter,
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navigateUp: () -> Unit,
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onDisplayModeChange: (LibraryDisplayMode) -> Unit,
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onFabClick: () -> Unit,
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onMangaClick: (Manga) -> Unit,
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onMangaLongClick: (Manga) -> Unit,
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) {
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val columns by presenter.getColumnsPreferenceForCurrentOrientation()
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val mangaList = presenter.getMangaList().collectAsLazyPagingItems()
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val snackbarHostState = remember { SnackbarHostState() }
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val context = LocalContext.current
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val uriHandler = LocalUriHandler.current
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val onHelpClick = {
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uriHandler.openUri(LocalSource.HELP_URL)
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}
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val onWebViewClick = f@{
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val source = presenter.source as? HttpSource ?: return@f
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val intent = WebViewActivity.newIntent(context, source.baseUrl, source.id, source.name)
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context.startActivity(intent)
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}
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Scaffold(
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topBar = {
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BrowseSourceToolbar(
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state = presenter,
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source = presenter.source!!,
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displayMode = presenter.displayMode,
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onDisplayModeChange = onDisplayModeChange,
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navigateUp = navigateUp,
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onWebViewClick = onWebViewClick,
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onHelpClick = onHelpClick,
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onSearch = { presenter.search() },
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)
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},
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floatingActionButton = {
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if (presenter.filters.isNotEmpty()) {
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ExtendedFloatingActionButton(
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modifier = Modifier.navigationBarsPadding(),
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text = { Text(text = stringResource(id = R.string.action_filter)) },
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icon = { Icon(Icons.Outlined.FilterList, contentDescription = "") },
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onClick = onFabClick,
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)
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}
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},
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snackbarHost = {
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SnackbarHost(hostState = snackbarHostState)
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},
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) { paddingValues ->
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BrowseSourceContent(
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source = presenter.source,
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mangaList = mangaList,
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getMangaState = { presenter.getManga(it) },
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columns = columns,
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displayMode = presenter.displayMode,
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snackbarHostState = snackbarHostState,
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contentPadding = paddingValues,
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onWebViewClick = onWebViewClick,
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onHelpClick = { uriHandler.openUri(MoreController.URL_HELP) },
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onLocalSourceHelpClick = onHelpClick,
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onMangaClick = onMangaClick,
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onMangaLongClick = onMangaLongClick,
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)
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}
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}
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@Composable
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fun BrowseSourceContent(
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source: CatalogueSource?,
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mangaList: LazyPagingItems<Manga>,
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getMangaState: @Composable ((Manga) -> State<Manga>),
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columns: GridCells,
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displayMode: LibraryDisplayMode,
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snackbarHostState: SnackbarHostState,
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contentPadding: PaddingValues,
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onWebViewClick: () -> Unit,
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onHelpClick: () -> Unit,
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onLocalSourceHelpClick: () -> Unit,
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onMangaClick: (Manga) -> Unit,
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onMangaLongClick: (Manga) -> Unit,
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) {
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val context = LocalContext.current
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val errorState = mangaList.loadState.refresh.takeIf { it is LoadState.Error }
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?: mangaList.loadState.append.takeIf { it is LoadState.Error }
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val getErrorMessage: (LoadState.Error) -> String = { state ->
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when {
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state.error is NoResultsException -> context.getString(R.string.no_results_found)
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state.error.message == null -> ""
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state.error.message!!.startsWith("HTTP error") -> "${state.error.message}: ${context.getString(R.string.http_error_hint)}"
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else -> state.error.message!!
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}
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}
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LaunchedEffect(errorState) {
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if (mangaList.itemCount > 0 && errorState != null && errorState is LoadState.Error) {
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val result = snackbarHostState.showSnackbar(
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message = getErrorMessage(errorState),
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actionLabel = context.getString(R.string.action_webview_refresh),
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duration = SnackbarDuration.Indefinite,
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)
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when (result) {
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SnackbarResult.Dismissed -> snackbarHostState.currentSnackbarData?.dismiss()
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SnackbarResult.ActionPerformed -> mangaList.refresh()
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}
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}
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}
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if (mangaList.itemCount <= 0 && errorState != null && errorState is LoadState.Error) {
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EmptyScreen(
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message = getErrorMessage(errorState),
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actions = if (source is LocalSource) {
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listOf(
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EmptyView.Action(R.string.local_source_help_guide, R.drawable.ic_help_24dp) { onLocalSourceHelpClick() },
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)
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} else {
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listOf(
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EmptyView.Action(R.string.action_retry, R.drawable.ic_refresh_24dp) { mangaList.refresh() },
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EmptyView.Action(R.string.action_open_in_web_view, R.drawable.ic_public_24dp) { onWebViewClick() },
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EmptyView.Action(R.string.label_help, R.drawable.ic_help_24dp) { onHelpClick() },
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)
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},
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)
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return
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}
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when (displayMode) {
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LibraryDisplayMode.ComfortableGrid -> {
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BrowseSourceComfortableGrid(
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mangaList = mangaList,
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getMangaState = getMangaState,
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columns = columns,
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contentPadding = contentPadding,
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onMangaClick = onMangaClick,
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onMangaLongClick = onMangaLongClick,
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)
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}
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LibraryDisplayMode.List -> {
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BrowseSourceList(
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mangaList = mangaList,
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getMangaState = getMangaState,
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contentPadding = contentPadding,
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onMangaClick = onMangaClick,
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onMangaLongClick = onMangaLongClick,
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)
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}
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else -> {
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BrowseSourceCompactGrid(
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mangaList = mangaList,
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getMangaState = getMangaState,
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columns = columns,
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contentPadding = contentPadding,
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onMangaClick = onMangaClick,
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onMangaLongClick = onMangaLongClick,
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)
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}
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}
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}
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