Hide feed section if tracker is disabled

app/src/main/java/org/koitharu/kotatsu/main/ui/MainActivity.kt

@@ -15,15 +15,21 @@ import androidx.core.app.ActivityOptionsCompat
 import androidx.core.content.ContextCompat
 import androidx.core.graphics.Insets
 import androidx.core.util.size
-import androidx.core.view.*
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.isVisible
+import androidx.core.view.updateLayoutParams
+import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentTransaction
 import androidx.fragment.app.commit
 import androidx.lifecycle.lifecycleScope
 import androidx.transition.TransitionManager
-import com.google.android.material.R as materialR
 import com.google.android.material.appbar.AppBarLayout
-import com.google.android.material.appbar.AppBarLayout.LayoutParams.*
+import com.google.android.material.appbar.AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS
+import com.google.android.material.appbar.AppBarLayout.LayoutParams.SCROLL_FLAG_NO_SCROLL
+import com.google.android.material.appbar.AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL
+import com.google.android.material.appbar.AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.Dispatchers
@@ -34,7 +40,6 @@ import org.koitharu.kotatsu.base.ui.BaseActivity
 import org.koitharu.kotatsu.base.ui.widgets.SlidingBottomNavigationView
 import org.koitharu.kotatsu.databinding.ActivityMainBinding
 import org.koitharu.kotatsu.details.ui.DetailsActivity
-import org.koitharu.kotatsu.shelf.ui.ShelfFragment
 import org.koitharu.kotatsu.main.ui.owners.AppBarOwner
 import org.koitharu.kotatsu.main.ui.owners.BottomNavOwner
 import org.koitharu.kotatsu.parsers.model.Manga
@@ -48,11 +53,18 @@ import org.koitharu.kotatsu.search.ui.suggestion.SearchSuggestionListener
 import org.koitharu.kotatsu.search.ui.suggestion.SearchSuggestionViewModel
 import org.koitharu.kotatsu.settings.newsources.NewSourcesDialogFragment
 import org.koitharu.kotatsu.settings.onboard.OnboardDialogFragment
+import org.koitharu.kotatsu.shelf.ui.ShelfFragment
 import org.koitharu.kotatsu.suggestions.ui.SuggestionsWorker
 import org.koitharu.kotatsu.tracker.work.TrackWorker
 import org.koitharu.kotatsu.utils.VoiceInputContract
-import org.koitharu.kotatsu.utils.ext.*
+import org.koitharu.kotatsu.utils.ext.drawableEnd
-import kotlin.text.Typography.dagger
+import org.koitharu.kotatsu.utils.ext.getDisplayMessage
+import org.koitharu.kotatsu.utils.ext.hideKeyboard
+import org.koitharu.kotatsu.utils.ext.resolve
+import org.koitharu.kotatsu.utils.ext.scaleUpActivityOptionsOf
+import org.koitharu.kotatsu.utils.ext.setNavigationBarTransparentCompat
+import org.koitharu.kotatsu.utils.ext.tryLaunch
+import com.google.android.material.R as materialR
 
 private const val TAG_SEARCH = "search"
 
@@ -116,6 +128,7 @@ class MainActivity :
 		viewModel.isLoading.observe(this, this::onLoadingStateChanged)
 		viewModel.isResumeEnabled.observe(this, this::onResumeEnabledChanged)
 		viewModel.counters.observe(this, ::onCountersChanged)
+		viewModel.isFeedAvailable.observe(this, ::onFeedAvailabilityChanged)
 	}
 
 	override fun onRestoreInstanceState(savedInstanceState: Bundle) {
@@ -261,6 +274,10 @@ class MainActivity :
 		}
 	}
 
+	private fun onFeedAvailabilityChanged(isFeedAvailable: Boolean) {
+		navigationDelegate.setItemVisibility(R.id.nav_feed, isFeedAvailable)
+	}
+
 	private fun onLoadingStateChanged(isLoading: Boolean) {
 		binding.fab?.isEnabled = !isLoading
 	}

app/src/main/java/org/koitharu/kotatsu/main/ui/MainNavigationDelegate.kt

@@ -3,6 +3,7 @@ package org.koitharu.kotatsu.main.ui
 import android.os.Bundle
 import android.view.MenuItem
 import androidx.annotation.IdRes
+import androidx.core.view.iterator
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
 import androidx.fragment.app.FragmentTransaction
@@ -62,6 +63,14 @@ class MainNavigationDelegate(
 		}
 	}
 
+	fun setItemVisibility(@IdRes itemId: Int, isVisible: Boolean) {
+		val item = navBar.menu.findItem(itemId) ?: return
+		item.isVisible = isVisible
+		if (item.isChecked && !isVisible) {
+			navBar.selectedItemId = firstItem()?.itemId ?: return
+		}
+	}
+
 	fun addOnFragmentChangedListener(listener: OnFragmentChangedListener) {
 		listeners.add(listener)
 	}
@@ -96,6 +105,14 @@ class MainNavigationDelegate(
 		listeners.forEach { it.onFragmentChanged(fragment, fromUser) }
 	}
 
+	private fun firstItem(): MenuItem? {
+		val menu = navBar.menu
+		for (item in menu) {
+			if (item.isVisible) return item
+		}
+		return null
+	}
+
 	interface OnFragmentChangedListener {
 
 		fun onFragmentChanged(fragment: Fragment, fromUser: Boolean)

app/src/main/java/org/koitharu/kotatsu/main/ui/MainViewModel.kt

@@ -4,7 +4,6 @@ import android.util.SparseIntArray
 import androidx.core.util.set
 import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
-import javax.inject.Inject
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.combine
 import org.koitharu.kotatsu.R
@@ -12,6 +11,8 @@ import org.koitharu.kotatsu.base.ui.BaseViewModel
 import org.koitharu.kotatsu.core.db.MangaDatabase
 import org.koitharu.kotatsu.core.exceptions.EmptyHistoryException
 import org.koitharu.kotatsu.core.github.AppUpdateRepository
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.core.prefs.observeAsLiveData
 import org.koitharu.kotatsu.history.domain.HistoryRepository
 import org.koitharu.kotatsu.parsers.model.Manga
 import org.koitharu.kotatsu.sync.domain.SyncController
@@ -19,6 +20,7 @@ import org.koitharu.kotatsu.tracker.domain.TrackingRepository
 import org.koitharu.kotatsu.utils.SingleLiveEvent
 import org.koitharu.kotatsu.utils.asFlowLiveData
 import org.koitharu.kotatsu.utils.ext.asLiveDataDistinct
+import javax.inject.Inject
 
 @HiltViewModel
 class MainViewModel @Inject constructor(
@@ -27,6 +29,7 @@ class MainViewModel @Inject constructor(
 	private val trackingRepository: TrackingRepository,
 	syncController: SyncController,
 	database: MangaDatabase,
+	private val settings: AppSettings,
 ) : BaseViewModel() {
 
 	val onOpenReader = SingleLiveEvent<Manga>()
@@ -35,6 +38,12 @@ class MainViewModel @Inject constructor(
 		.observeHasItems()
 		.asFlowLiveData(viewModelScope.coroutineContext + Dispatchers.Default, false)
 
+	val isFeedAvailable = settings.observeAsLiveData(
+		context = viewModelScope.coroutineContext + Dispatchers.Default,
+		key = AppSettings.KEY_TRACKER_ENABLED,
+		valueProducer = { isTrackerEnabled },
+	)
+
 	val counters = combine(
 		appUpdateRepository.observeAvailableUpdate(),
 		trackingRepository.observeUpdatedMangaCount(),