fix(WatchHistory): always show filter bar (libre-tube#7258)

* fix(WatchHistory): always show filter bar

Fixes an issue, where the users could get soft-locked, by selecting a
filter, which had no items, leading to the filter bar being hidden, and
thus making the user unable to deselect the filter.
This is fixed, by only hiding recyclerView/No items views.

* feat(WatchHistory): disable 'Play all' if history is empty

* feat(WatchHistory): disable clear button, if history is empty

Author: FineFindus

app/src/main/java/com/github/libretube/ui/fragments/WatchHistoryFragment.kt

@@ -31,8 +31,10 @@ import com.github.libretube.ui.models.WatchHistoryModel
 import com.github.libretube.ui.sheets.BaseBottomSheet
 import com.github.libretube.util.PlayingQueue
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 class WatchHistoryFragment : DynamicLayoutManagerFragment(R.layout.fragment_watch_history) {
     private var _binding: FragmentWatchHistoryBinding? = null
@@ -67,7 +69,7 @@ class WatchHistoryFragment : DynamicLayoutManagerFragment(R.layout.fragment_watc
             RecyclerView.AdapterDataObserver() {
             override fun onItemRangeRemoved(positionStart: Int, itemCount: Int) {
                 if (watchHistoryAdapter.itemCount == 0) {
-                    binding.historyContainer.isGone = true
+                    binding.watchHistoryRecView.isGone = true
                     binding.historyEmpty.isVisible = true
                 }
             }
@@ -98,7 +100,7 @@ class WatchHistoryFragment : DynamicLayoutManagerFragment(R.layout.fragment_watc
                     selected[index] = newValue
                 }
                 .setPositiveButton(R.string.okay) { _, _ ->
-                    binding.historyContainer.isGone = true
+                    binding.watchHistoryRecView.isGone = true
                     binding.historyEmpty.isVisible = true
                     lifecycleScope.launch(Dispatchers.IO) {
                         Database.withTransaction {
@@ -149,7 +151,8 @@ class WatchHistoryFragment : DynamicLayoutManagerFragment(R.layout.fragment_watc
 
         viewModel.filteredWatchHistory.observe(viewLifecycleOwner) { history ->
             binding.historyEmpty.isGone = history.isNotEmpty()
-            binding.historyContainer.isVisible = history.isNotEmpty()
+            binding.playAll.isEnabled = history.isNotEmpty()
+            binding.watchHistoryRecView.isVisible = history.isNotEmpty()
 
             watchHistoryAdapter.submitList(history)
         }
@@ -163,6 +166,15 @@ class WatchHistoryFragment : DynamicLayoutManagerFragment(R.layout.fragment_watc
         if (NavBarHelper.getStartFragmentId(requireContext()) != R.id.watchHistoryFragment) {
             setupFragmentAnimation(binding.root)
         }
+
+        CoroutineScope(Dispatchers.IO).launch {
+            val hasItems = Database.watchHistoryDao().getSize() != 0
+
+            withContext(Dispatchers.Main) {
+                binding.clear.isEnabled = hasItems
+            }
+        }
+
     }
 
     override fun onConfigurationChanged(newConfig: Configuration) {

app/src/main/java/com/github/libretube/ui/models/sources/WatchHistoryPagingSource.kt

@@ -29,11 +29,9 @@
     </LinearLayout>
 
     <androidx.coordinatorlayout.widget.CoordinatorLayout
-        android:id="@+id/historyContainer"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:scrollbars="vertical"
-        android:visibility="gone">
+        android:scrollbars="vertical">
 
         <com.google.android.material.appbar.AppBarLayout
             android:id="@+id/watch_history_app_bar"