Fix fast scroll issues

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/list/fastscroll/FastScroller.kt

@@ -9,6 +9,7 @@ import android.util.AttributeSet
 import android.util.TypedValue
 import android.view.LayoutInflater
 import android.view.MotionEvent
+import android.view.View
 import android.view.ViewGroup
 import android.widget.*
 import androidx.annotation.*
@@ -24,6 +25,7 @@ import androidx.recyclerview.widget.RecyclerView
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.util.ext.getThemeColor
 import org.koitharu.kotatsu.core.util.ext.isLayoutReversed
+import org.koitharu.kotatsu.core.util.ext.parents
 import org.koitharu.kotatsu.databinding.FastScrollerBinding
 import kotlin.math.roundToInt
 import com.google.android.material.R as materialR
@@ -115,6 +117,9 @@ class FastScroller @JvmOverloads constructor(
 			return viewHeight * proportion
 		}
 
+	val isScrollbarVisible: Boolean
+		get() = binding.scrollbar.isVisible
+
 	init {
 		clipChildren = false
 		orientation = HORIZONTAL
@@ -165,7 +170,9 @@ class FastScroller @JvmOverloads constructor(
 
 		when (event.actionMasked) {
 			MotionEvent.ACTION_DOWN -> {
-				if (event.x.toInt() !in binding.scrollbar.left..binding.scrollbar.right) return false
+				if (!isScrollbarVisible || event.x.toInt() !in binding.scrollbar.left..binding.scrollbar.right) {
+					return false
+				}
 
 				requestDisallowInterceptTouchEvent(true)
 				setHandleSelected(true)
@@ -296,10 +303,12 @@ class FastScroller @JvmOverloads constructor(
 
 		if (parent is ViewGroup) {
 			setLayoutParams(parent as ViewGroup)
-		} else if (recyclerView.parent is ViewGroup) {
-			val viewGroup = recyclerView.parent as ViewGroup
-			viewGroup.addView(this)
-			setLayoutParams(viewGroup)
+		} else {
+			val viewGroup = findValidParent(recyclerView)
+			if (viewGroup != null) {
+				viewGroup.addView(this)
+				setLayoutParams(viewGroup)
+			}
 		}
 
 		recyclerView.addOnScrollListener(scrollListener)
@@ -513,6 +522,14 @@ class FastScroller @JvmOverloads constructor(
 		return BubbleSize.values().getOrNull(ordinal) ?: defaultValue
 	}
 
+	private fun findValidParent(view: View): ViewGroup? = view.parents.firstNotNullOfOrNull { p ->
+		if (p is FrameLayout || p is ConstraintLayout || p is CoordinatorLayout || p is RelativeLayout) {
+			p as ViewGroup
+		} else {
+			null
+		}
+	}
+
 	private val BubbleSize.textSize
 		@Px get() = resources.getDimension(textSizeId)
 

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/FlowObserver.kt

@@ -14,9 +14,7 @@ import org.koitharu.kotatsu.core.util.Event
 fun <T> Flow<T>.observe(owner: LifecycleOwner, collector: FlowCollector<T>) {
 	val start = if (this is StateFlow) CoroutineStart.UNDISPATCHED else CoroutineStart.DEFAULT
 	owner.lifecycleScope.launch(start = start) {
-		owner.lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
-			collect(collector)
-		}
+		collect(collector)
 	}
 }
 

app/src/main/kotlin/org/koitharu/kotatsu/list/ui/MangaListFragment.kt

@@ -35,7 +35,6 @@ import org.koitharu.kotatsu.core.ui.util.ReversibleActionObserver
 import org.koitharu.kotatsu.core.util.ShareHelper
 import org.koitharu.kotatsu.core.util.ext.addMenuProvider
 import org.koitharu.kotatsu.core.util.ext.clearItemDecorations
-import org.koitharu.kotatsu.core.util.ext.getThemeColor
 import org.koitharu.kotatsu.core.util.ext.measureHeight
 import org.koitharu.kotatsu.core.util.ext.observe
 import org.koitharu.kotatsu.core.util.ext.observeEvent
@@ -114,8 +113,6 @@ abstract class MangaListFragment :
 			fastScroller.setFastScrollListener(this@MangaListFragment)
 		}
 		with(binding.swipeRefreshLayout) {
-			setProgressBackgroundColorSchemeColor(context.getThemeColor(com.google.android.material.R.attr.colorPrimary))
-			setColorSchemeColors(context.getThemeColor(com.google.android.material.R.attr.colorOnPrimary))
 			setOnRefreshListener(this@MangaListFragment)
 			isEnabled = isSwipeRefreshEnabled
 		}