Fixes

app/src/main/java/org/koitharu/kotatsu/details/ui/ChaptersFragment.kt

@@ -75,7 +75,10 @@ class ChaptersFragment : BaseFragment<FragmentChaptersBinding>(),
 
 	override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
 		super.onCreateOptionsMenu(menu, inflater)
-		inflater.inflate(R.menu.opt_chapters, menu)
+		// workaround: duplication after screen rotation
+		if (menu.findItem(R.id.action_reversed) == null) {
+			inflater.inflate(R.menu.opt_chapters, menu)
+		}
 	}
 
 	override fun onPrepareOptionsMenu(menu: Menu) {

app/src/main/java/org/koitharu/kotatsu/details/ui/DetailsActivity.kt

@@ -30,8 +30,7 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.base.domain.MangaIntent
 import org.koitharu.kotatsu.base.ui.BaseActivity
 import org.koitharu.kotatsu.browser.BrowserActivity
-import org.koitharu.kotatsu.browser.cloudflare.CloudFlareDialog
-import org.koitharu.kotatsu.core.exceptions.CloudFlareProtectedException
+import org.koitharu.kotatsu.core.exceptions.resolve.ExceptionResolver
 import org.koitharu.kotatsu.core.model.parcelable.ParcelableManga
 import org.koitharu.kotatsu.core.os.ShortcutsRepository
 import org.koitharu.kotatsu.databinding.ActivityDetailsBinding
@@ -87,9 +86,8 @@ class DetailsActivity : BaseActivity<ActivityDetailsBinding>(), TabLayoutMediato
 
 	private fun onError(e: Throwable) {
 		when {
-			e is CloudFlareProtectedException -> {
-				CloudFlareDialog.newInstance(e.url)
-					.show(supportFragmentManager, CloudFlareDialog.TAG)
+			ExceptionResolver.canResolve(e) -> {
+				resolveError(e)
 			}
 			viewModel.manga.value == null -> {
 				Toast.makeText(this, e.getDisplayMessage(resources), Toast.LENGTH_LONG).show()
@@ -284,6 +282,17 @@ class DetailsActivity : BaseActivity<ActivityDetailsBinding>(), TabLayoutMediato
 		}
 	}
 
+	private fun resolveError(e: Throwable) {
+		lifecycleScope.launch {
+			if (exceptionResolver.resolve(e)) {
+				viewModel.reload()
+			} else if (viewModel.manga.value == null) {
+				Toast.makeText(this@DetailsActivity, e.getDisplayMessage(resources), Toast.LENGTH_LONG).show()
+				finishAfterTransition()
+			}
+		}
+	}
+
 	companion object {
 
 		fun newIntent(context: Context, manga: Manga): Intent {

app/src/main/java/org/koitharu/kotatsu/details/ui/DetailsViewModel.kt

@@ -5,6 +5,7 @@ import androidx.lifecycle.asFlow
 import androidx.lifecycle.asLiveData
 import androidx.lifecycle.viewModelScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.flow.*
 import kotlinx.coroutines.plus
 import org.koitharu.kotatsu.base.domain.MangaDataRepository
@@ -29,7 +30,7 @@ import org.koitharu.kotatsu.utils.ext.mapToSet
 import java.io.IOException
 
 class DetailsViewModel(
-	intent: MangaIntent,
+	private val intent: MangaIntent,
 	private val historyRepository: HistoryRepository,
 	private val favouritesRepository: FavouritesRepository,
 	private val localMangaRepository: LocalMangaRepository,
@@ -38,6 +39,7 @@ class DetailsViewModel(
 	private val settings: AppSettings,
 ) : BaseViewModel() {
 
+	private var loadingJob: Job
 	private val mangaData = MutableStateFlow<Manga?>(intent.manga)
 	private val selectedBranch = MutableStateFlow<String?>(null)
 
@@ -109,28 +111,12 @@ class DetailsViewModel(
 	}.asLiveData(viewModelScope.coroutineContext + Dispatchers.Default)
 
 	init {
-		launchLoadingJob(Dispatchers.Default) {
-			var manga = mangaDataRepository.resolveIntent(intent)
-				?: throw MangaNotFoundException("Cannot find manga")
-			mangaData.value = manga
-			manga = MangaRepository(manga.source).getDetails(manga)
-			// find default branch
-			val hist = historyRepository.getOne(manga)
-			selectedBranch.value = if (hist != null) {
-				manga.chapters?.find { it.id == hist.chapterId }?.branch
-			} else {
-				predictBranch(manga.chapters)
-			}
-			mangaData.value = manga
-			remoteManga.value = runCatching {
-				if (manga.source == MangaSource.LOCAL) {
-					val m = localMangaRepository.getRemoteManga(manga) ?: return@runCatching null
-					MangaRepository(m.source).getDetails(m)
-				} else {
-					localMangaRepository.findSavedManga(manga)
-				}
-			}.getOrNull()
-		}
+		loadingJob = doLoad()
+	}
+
+	fun reload() {
+		loadingJob.cancel()
+		loadingJob = doLoad()
 	}
 
 	fun deleteLocal(manga: Manga) {
@@ -156,6 +142,29 @@ class DetailsViewModel(
 		return remoteManga.value
 	}
 
+	private fun doLoad() = launchLoadingJob(Dispatchers.Default) {
+		var manga = mangaDataRepository.resolveIntent(intent)
+			?: throw MangaNotFoundException("Cannot find manga")
+		mangaData.value = manga
+		manga = MangaRepository(manga.source).getDetails(manga)
+		// find default branch
+		val hist = historyRepository.getOne(manga)
+		selectedBranch.value = if (hist != null) {
+			manga.chapters?.find { it.id == hist.chapterId }?.branch
+		} else {
+			predictBranch(manga.chapters)
+		}
+		mangaData.value = manga
+		remoteManga.value = runCatching {
+			if (manga.source == MangaSource.LOCAL) {
+				val m = localMangaRepository.getRemoteManga(manga) ?: return@runCatching null
+				MangaRepository(m.source).getDetails(m)
+			} else {
+				localMangaRepository.findSavedManga(manga)
+			}
+		}.getOrNull()
+	}
+
 	private fun mapChapters(
 		chapters: List<MangaChapter>,
 		downloadedChapters: List<MangaChapter>?,

app/src/main/res/layout/item_source_config_draggable.xml

@@ -4,6 +4,7 @@
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="?android:listPreferredItemHeightSmall"
+	android:background="?android:windowBackground"
 	android:gravity="center_vertical"
 	android:orientation="horizontal">