Updates to the Source Filter Sheet

With some renaming, but mostly taking changes from upstream + some from the new set categories sheet (such as reset/filter at the bottom

Co-Authored-By: arkon <4098258+arkon@users.noreply.github.com>

app/src/main/java/eu/kanade/tachiyomi/ui/source/browse/BrowseSourceController.kt

@@ -289,7 +289,7 @@ open class BrowseSourceController(bundle: Bundle) :
     }
 
     private fun showFilters() {
-        val sheet = SourceSearchSheet(activity!!)
+        val sheet = SourceFilterSheet(activity!!)
         sheet.setFilters(presenter.filterItems)
         presenter.filtersChanged = false
         val oldFilters = mutableListOf<Any?>()

app/src/main/java/eu/kanade/tachiyomi/ui/source/browse/SourceFilterSheet.kt

@@ -0,0 +1,150 @@
+package eu.kanade.tachiyomi.ui.source.browse
+
+import android.app.Activity
+import android.os.Bundle
+import android.view.View
+import android.view.ViewGroup
+import android.view.ViewTreeObserver.OnGlobalLayoutListener
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.bottomsheet.BottomSheetBehavior
+import com.google.android.material.bottomsheet.BottomSheetDialog
+import eu.davidea.flexibleadapter.FlexibleAdapter
+import eu.davidea.flexibleadapter.items.IFlexible
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.databinding.SourceFilterSheetBinding
+import eu.kanade.tachiyomi.util.system.dpToPx
+import eu.kanade.tachiyomi.util.view.collapse
+import eu.kanade.tachiyomi.util.view.setEdgeToEdge
+import eu.kanade.tachiyomi.util.view.updateLayoutParams
+import eu.kanade.tachiyomi.util.view.updatePaddingRelative
+
+class SourceFilterSheet(val activity: Activity) :
+    BottomSheetDialog(activity, R.style.BottomSheetDialogTheme) {
+
+    private val sheetBehavior: BottomSheetBehavior<*>
+
+    private var filterChanged = true
+
+    val adapter: FlexibleAdapter<IFlexible<*>> = FlexibleAdapter<IFlexible<*>>(null)
+        .setDisplayHeadersAtStartUp(true)
+
+    var onSearchClicked = {}
+
+    var onResetClicked = {}
+
+    private val binding = SourceFilterSheetBinding.inflate(activity.layoutInflater)
+    init {
+        setContentView(binding.root)
+        binding.searchBtn.setOnClickListener { dismiss() }
+        binding.resetBtn.setOnClickListener { onResetClicked() }
+
+        sheetBehavior = BottomSheetBehavior.from(binding.root.parent as ViewGroup)
+        sheetBehavior.peekHeight = 450.dpToPx
+        sheetBehavior.collapse()
+        setEdgeToEdge(activity, binding.root)
+
+        binding.titleLayout.viewTreeObserver.addOnGlobalLayoutListener(object : OnGlobalLayoutListener {
+            override fun onGlobalLayout() {
+                binding.cardView.updateLayoutParams<ConstraintLayout.LayoutParams> {
+                    val fullHeight = activity.window.decorView.height
+                    val insets = activity.window.decorView.rootWindowInsets
+                    matchConstraintMaxHeight =
+                        fullHeight - (insets?.systemWindowInsetTop ?: 0) -
+                        binding.titleLayout.height - 75.dpToPx
+                }
+                if (binding.titleLayout.height > 0) {
+                    binding.titleLayout.viewTreeObserver.removeOnGlobalLayoutListener(this)
+                }
+            }
+        })
+
+        (binding.root.parent.parent as? View)?.viewTreeObserver?.addOnGlobalLayoutListener(object : OnGlobalLayoutListener {
+            override fun onGlobalLayout() {
+                updateBottomButtons()
+                if (sheetBehavior.state != BottomSheetBehavior.STATE_COLLAPSED) {
+                    (binding.root.parent.parent as? View)?.viewTreeObserver?.removeOnGlobalLayoutListener(this)
+                }
+            }
+        })
+
+        setOnShowListener {
+            updateBottomButtons()
+        }
+
+        binding.filtersRecycler.layoutManager = androidx.recyclerview.widget.LinearLayoutManager(context)
+        binding.filtersRecycler.clipToPadding = false
+        binding.filtersRecycler.adapter = adapter
+        binding.filtersRecycler.setHasFixedSize(true)
+
+        sheetBehavior.addBottomSheetCallback(
+            object : BottomSheetBehavior.BottomSheetCallback() {
+                override fun onSlide(bottomSheet: View, progress: Float) {
+                    updateBottomButtons()
+                }
+
+                override fun onStateChanged(p0: View, state: Int) {
+                    updateBottomButtons()
+                }
+            }
+        )
+
+        binding.filtersRecycler.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+            override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
+                super.onScrollStateChanged(recyclerView, newState)
+                if (newState == RecyclerView.SCROLL_STATE_IDLE) {
+                    sheetBehavior.isDraggable = true
+                }
+            }
+
+            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                super.onScrolled(recyclerView, dx, dy)
+                if (recyclerView.canScrollVertically(-1)) {
+                    sheetBehavior.isDraggable = false
+                }
+            }
+        })
+    }
+
+    override fun onStart() {
+        super.onStart()
+        sheetBehavior.collapse()
+        updateBottomButtons()
+        binding.root.post {
+            updateBottomButtons()
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val attrsArray = intArrayOf(android.R.attr.actionBarSize)
+        val array = context.obtainStyledAttributes(attrsArray)
+        val headerHeight = array.getDimensionPixelSize(0, 0)
+        binding.titleLayout.updatePaddingRelative(
+            bottom = activity.window.decorView.rootWindowInsets.systemWindowInsetBottom
+        )
+
+        binding.titleLayout.updateLayoutParams<ConstraintLayout.LayoutParams> {
+            height = headerHeight + binding.titleLayout.paddingBottom
+        }
+        array.recycle()
+    }
+
+    private fun updateBottomButtons() {
+        val bottomSheet = binding.root.parent as View
+        val bottomSheetVisibleHeight = -bottomSheet.top + (activity.window.decorView.height - bottomSheet.height)
+
+        binding.titleLayout.translationY = bottomSheetVisibleHeight.toFloat()
+    }
+
+    override fun dismiss() {
+        super.dismiss()
+        if (filterChanged) {
+            onSearchClicked()
+        }
+    }
+
+    fun setFilters(items: List<IFlexible<*>>) {
+        adapter.updateDataSet(items)
+    }
+}

app/src/main/java/eu/kanade/tachiyomi/ui/source/browse/SourceSearchSheet.kt

@@ -1,130 +0,0 @@
-package eu.kanade.tachiyomi.ui.source.browse
-
-import android.animation.ObjectAnimator
-import android.animation.ValueAnimator
-import android.app.Activity
-import android.view.ActionMode
-import android.view.View
-import android.view.ViewGroup
-import androidx.recyclerview.widget.RecyclerView
-import com.google.android.material.bottomsheet.BottomSheetBehavior
-import com.google.android.material.bottomsheet.BottomSheetDialog
-import eu.davidea.flexibleadapter.FlexibleAdapter
-import eu.davidea.flexibleadapter.items.IFlexible
-import eu.kanade.tachiyomi.R
-import eu.kanade.tachiyomi.data.preference.PreferencesHelper
-import eu.kanade.tachiyomi.databinding.SourceFilterSheetBinding
-import eu.kanade.tachiyomi.util.system.dpToPx
-import eu.kanade.tachiyomi.util.view.RecyclerWindowInsetsListener
-import eu.kanade.tachiyomi.util.view.expand
-import eu.kanade.tachiyomi.util.view.setEdgeToEdge
-import uy.kohesive.injekt.injectLazy
-
-class SourceSearchSheet(activity: Activity) :
-    BottomSheetDialog(activity, R.style.BottomSheetDialogTheme) {
-
-    /**
-     * Preferences helper.
-     */
-    private val preferences by injectLazy<PreferencesHelper>()
-
-    private var sheetBehavior: BottomSheetBehavior<*>
-
-    private var elevationAnimator: ValueAnimator? = null
-
-    var filterChanged = true
-
-    var isNotElevated = false
-
-    val adapter: FlexibleAdapter<IFlexible<*>> = FlexibleAdapter<IFlexible<*>>(null)
-        .setDisplayHeadersAtStartUp(true)
-
-    var onSearchClicked = {}
-
-    var onResetClicked = {}
-
-    private val binding = SourceFilterSheetBinding.inflate(activity.layoutInflater)
-    init {
-        setContentView(binding.root)
-        binding.toolbarTitle.text = context.getString(R.string.search_filters)
-        binding.searchBtn.setOnClickListener { dismiss() }
-        binding.resetBtn.setOnClickListener { onResetClicked() }
-
-        sheetBehavior = BottomSheetBehavior.from(binding.root.parent as ViewGroup)
-        sheetBehavior.skipCollapsed = true
-        sheetBehavior.expand()
-        setEdgeToEdge(
-            activity,
-            binding.root,
-            50.dpToPx
-        )
-
-        binding.recycler.layoutManager = androidx.recyclerview.widget.LinearLayoutManager(context)
-        binding.recycler.clipToPadding = false
-        binding.recycler.adapter = adapter
-        binding.recycler.setHasFixedSize(true)
-        binding.recycler.setOnApplyWindowInsetsListener(RecyclerWindowInsetsListener)
-
-        // the spinner in the recycler can break the sheet's layout on change
-        // this is to reset it back
-        binding.sourceFilterSheet.post {
-            (binding.sourceFilterSheet.parent as? View)?.fitsSystemWindows = false
-            binding.sourceFilterSheet.viewTreeObserver.addOnDrawListener {
-                (binding.sourceFilterSheet.parent as? View)?.fitsSystemWindows = false
-            }
-        }
-
-        sheetBehavior.addBottomSheetCallback(
-            object : BottomSheetBehavior.BottomSheetCallback() {
-                override fun onSlide(bottomSheet: View, progress: Float) {}
-
-                override fun onStateChanged(p0: View, state: Int) {
-                    if (state == BottomSheetBehavior.STATE_EXPANDED) {
-                        sheetBehavior.skipCollapsed = true
-                    }
-                }
-            }
-        )
-
-        binding.recycler.addOnScrollListener(
-            object : RecyclerView.OnScrollListener() {
-                override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
-                    super.onScrolled(recyclerView, dx, dy)
-                    val atTop = !binding.recycler.canScrollVertically(-1)
-                    if (atTop != isNotElevated) {
-                        elevationAnimator?.cancel()
-                        isNotElevated = atTop
-                        elevationAnimator?.cancel()
-                        elevationAnimator = ObjectAnimator.ofFloat(
-                            binding.titleLayout,
-                            "elevation",
-                            binding.titleLayout.elevation,
-                            if (atTop) 0f else 10f.dpToPx
-                        )
-                        elevationAnimator?.duration = 100
-                        elevationAnimator?.start()
-                    }
-                }
-            }
-        )
-    }
-
-    override fun onWindowStartingActionMode(
-        callback: ActionMode.Callback?,
-        type: Int
-    ): ActionMode? {
-        (binding.sourceFilterSheet.parent as View).fitsSystemWindows = false
-        return super.onWindowStartingActionMode(callback, type)
-    }
-
-    override fun dismiss() {
-        super.dismiss()
-        if (filterChanged) {
-            onSearchClicked()
-        }
-    }
-
-    fun setFilters(items: List<IFlexible<*>>) {
-        adapter.updateDataSet(items)
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/ui/source/filter/GroupItem.kt

@@ -36,9 +36,9 @@ class GroupItem(val filter: Filter.Group<*>) : AbstractExpandableHeaderItem<Grou
 
         holder.icon.setVectorCompat(
             if (isExpanded) {
-                R.drawable.ic_expand_more_24dp
+                R.drawable.ic_expand_less_24dp
             } else {
-                R.drawable.ic_chevron_right_24dp
+                R.drawable.ic_expand_more_24dp
             }
         )
 

app/src/main/java/eu/kanade/tachiyomi/ui/source/filter/SelectItem.kt

@@ -1,9 +1,6 @@
 package eu.kanade.tachiyomi.ui.source.filter
 
 import android.view.View
-import android.widget.ArrayAdapter
-import android.widget.Spinner
-import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
@@ -11,7 +8,7 @@ import eu.davidea.flexibleadapter.items.IFlexible
 import eu.davidea.viewholders.FlexibleViewHolder
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.source.model.Filter
-import eu.kanade.tachiyomi.widget.IgnoreFirstSpinnerListener
+import eu.kanade.tachiyomi.widget.MaterialSpinnerView
 
 open class SelectItem(val filter: Filter.Select<*>) : AbstractFlexibleItem<SelectItem.Holder>() {
 
@@ -24,21 +21,13 @@ open class SelectItem(val filter: Filter.Select<*>) : AbstractFlexibleItem<Selec
     }
 
     override fun bindViewHolder(adapter: FlexibleAdapter<IFlexible<RecyclerView.ViewHolder>>, holder: Holder, position: Int, payloads: MutableList<Any?>?) {
-        holder.text.text = filter.name + ": "
+        holder.spinnerView.title = filter.name + ": "
 
-        val spinner = holder.spinner
-        spinner.prompt = filter.name
-        spinner.adapter = ArrayAdapter<Any>(
-            holder.itemView.context,
-            android.R.layout.simple_spinner_item,
-            filter.values
-        ).apply {
-            setDropDownViewResource(R.layout.common_spinner_item)
-        }
-        spinner.onItemSelectedListener = IgnoreFirstSpinnerListener { pos ->
+        holder.spinnerView.setEntries(filter.values.map { it.toString() })
+        holder.spinnerView.setSelection(filter.state)
+        holder.spinnerView.onItemSelectedListener = { pos ->
             filter.state = pos
         }
-        spinner.setSelection(filter.state)
     }
 
     override fun equals(other: Any?): Boolean {
@@ -52,8 +41,6 @@ open class SelectItem(val filter: Filter.Select<*>) : AbstractFlexibleItem<Selec
     }
 
     class Holder(view: View, adapter: FlexibleAdapter<IFlexible<RecyclerView.ViewHolder>>) : FlexibleViewHolder(view, adapter) {
-
-        val text: TextView = itemView.findViewById(R.id.nav_view_item_text)
-        val spinner: Spinner = itemView.findViewById(R.id.nav_view_item)
+        val spinnerView: MaterialSpinnerView = itemView.findViewById(R.id.nav_view_item)
     }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/source/filter/SortGroup.kt

@@ -33,9 +33,9 @@ class SortGroup(val filter: Filter.Sort) : AbstractExpandableHeaderItem<SortGrou
 
         holder.icon.setVectorCompat(
             if (isExpanded) {
-                R.drawable.ic_expand_more_24dp
+                R.drawable.ic_expand_less_24dp
             } else {
-                R.drawable.ic_chevron_right_24dp
+                R.drawable.ic_expand_more_24dp
             }
         )
 

app/src/main/java/eu/kanade/tachiyomi/widget/MaterialSpinnerView.kt

@@ -56,25 +56,36 @@ class MaterialSpinnerView @JvmOverloads constructor(context: Context, attrs: Att
 
     init {
         addView(binding.root)
-        val a = context.obtainStyledAttributes(attrs, R.styleable.ReaderSpinnerView, 0, 0)
+        val a = context.obtainStyledAttributes(attrs, R.styleable.MaterialSpinnerView, 0, 0)
 
-        val str = a.getString(R.styleable.ReaderSpinnerView_title) ?: ""
+        val str = a.getString(R.styleable.MaterialSpinnerView_title) ?: ""
         title = str
 
-        val entries = (a.getTextArray(R.styleable.ReaderSpinnerView_android_entries) ?: emptyArray()).map { it.toString() }
+        val entries = (a.getTextArray(R.styleable.MaterialSpinnerView_android_entries) ?: emptyArray()).map { it.toString() }
         this.entries = entries
 
         binding.detailView.text = entries.firstOrNull().orEmpty()
 
+        if (entries.isNotEmpty()) {
             popup = makeSettingsPopup()
             setOnTouchListener(popup?.dragToOpenListener)
             setOnClickListener {
                 popup?.show()
             }
+        }
 
         a.recycle()
     }
 
+    fun setEntries(entries: List<String>) {
+        this.entries = entries
+        popup = makeSettingsPopup()
+        setOnTouchListener(popup?.dragToOpenListener)
+        setOnClickListener {
+            popup?.show()
+        }
+    }
+
     fun setSelection(selection: Int) {
         popup?.menu?.get(selectedPosition)?.let {
             it.icon = ContextCompat.getDrawable(context, R.drawable.ic_blank_24dp)

app/src/main/java/eu/kanade/tachiyomi/widget/SimpleNavigationView.kt

@@ -9,7 +9,6 @@ import android.widget.CheckBox
 import android.widget.CheckedTextView
 import android.widget.EditText
 import android.widget.RadioButton
-import android.widget.Spinner
 import android.widget.TextView
 import androidx.appcompat.widget.TintTypedArray
 import androidx.core.view.ViewCompat
@@ -154,8 +153,7 @@ open class SimpleNavigationView @JvmOverloads constructor(
     class SpinnerHolder(parent: ViewGroup, listener: OnClickListener? = null) :
         ClickableHolder(parent.inflate(TR.layout.navigation_view_spinner), listener) {
 
-        val text: TextView = itemView.findViewById(TR.id.nav_view_item_text)
-        val spinner: Spinner = itemView.findViewById(TR.id.nav_view_item)
+        val spinnerView: MaterialSpinnerView = itemView.findViewById(TR.id.nav_view_item)
     }
 
     class EditTextHolder(parent: ViewGroup) :

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

@@ -1,30 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="?attr/listPreferredItemHeightSmall"
-    android:background="?colorPrimaryVariant"
-    android:orientation="horizontal"
     android:gravity="center_vertical"
+    android:background="?android:attr/colorBackground"
+    android:orientation="horizontal"
     android:paddingStart="?attr/listPreferredItemPaddingStart"
-    android:paddingEnd="?attr/listPreferredItemPaddingEnd"
-    android:elevation="2dp">
+    android:paddingEnd="?attr/listPreferredItemPaddingEnd">
 
     <TextView
         android:id="@+id/title"
         android:layout_width="0dp"
-        android:layout_weight="1"
         android:layout_height="wrap_content"
+        android:layout_weight="1"
         android:ellipsize="end"
         android:maxLines="1"
-        android:textAppearance="@style/TextAppearance.AppCompat.Body2"
-        android:textColor="?attr/actionBarTintColor"
+        android:textAllCaps="true"
+        android:textSize="15sp"
+        android:textAppearance="@style/TextAppearance.MaterialComponents.Headline6"
+        android:textColor="?android:attr/textColorPrimary"
         tools:text="Header" />
 
     <ImageView
         android:id="@+id/expand_icon"
         android:layout_width="wrap_content"
-        android:layout_height="wrap_content"/>
+        android:layout_height="wrap_content"
+        tools:src="@drawable/ic_expand_more_24dp"
+        app:tint="?android:attr/textColorPrimary" />
 
 </LinearLayout>

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

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="?attr/listPreferredItemHeightSmall"
@@ -9,24 +8,12 @@
     android:background="?attr/selectableItemBackground"
     android:focusable="true">
 
-    <TextView
-        android:id="@+id/nav_view_item_text"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        android:layout_weight="1"
-        android:ellipsize="end"
-        android:maxLines="1"
-        android:layout_gravity="center"
-        android:paddingEnd="8dp"
-        tools:text="Filter:" />
-
-    <Spinner
+    <eu.kanade.tachiyomi.widget.MaterialSpinnerView
         android:id="@+id/nav_view_item"
-        android:layout_width="0dp"
+        android:layout_marginEnd="8dp"
+        android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_weight="1"
-        android:gravity="center_vertical|start"
-        android:maxLines="1"
-        android:textAppearance="@style/TextAppearance.AppCompat.Body2" />
+        tools:entries="@array/viewers_selector"
+        tools:title="Filter: "/>
 
-</LinearLayout>
+</FrameLayout>

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

@@ -1,19 +1,40 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/source_filter_sheet"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="wrap_content"
     android:background="@drawable/bottom_sheet_rounded_background"
+    app:layout_constraintVertical_chainStyle="packed"
     android:backgroundTint="?android:attr/colorBackground">
 
+    <androidx.cardview.widget.CardView
+        android:id="@+id/card_view"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toTopOf="@id/title_layout"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:cardCornerRadius="@dimen/rounded_radius"
+        app:cardElevation="0dp"
+        app:layout_constraintTop_toTopOf="parent">
+
         <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/recycler"
+            android:id="@+id/filters_recycler"
             android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:layout_marginTop="?attr/actionBarSize"
-        android:clipToPadding="false" />
+            android:layout_height="wrap_content"
+            android:paddingTop="12dp"
+            android:paddingBottom="12dp"
+            android:clipToPadding="false"
+            android:background="@drawable/bottom_sheet_rounded_background"
+            android:backgroundTint="?attr/colorSecondary"
+            app:layout_constraintBottom_toTopOf="@id/title_layout"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.0"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+    </androidx.cardview.widget.CardView>
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:id="@+id/title_layout"
@@ -23,49 +44,49 @@
         android:background="@drawable/bottom_sheet_rounded_background"
         android:backgroundTint="?attr/colorSecondary"
         android:clickable="true"
-        android:elevation="0dp"
         android:focusable="true"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/card_view"
+        app:layout_constraintBottom_toBottomOf="parent"
         android:orientation="horizontal">
 
         <com.google.android.material.button.MaterialButton
             android:id="@+id/reset_btn"
             style="@style/Theme.Widget.Button.TextButton"
             android:layout_width="wrap_content"
-            android:textColor="?attr/tabBarIconColor"
-            android:layout_height="match_parent"
-            android:textSize="16sp"
-            android:letterSpacing="0.0"
+            android:layout_height="wrap_content"
             android:text="@string/reset"
             app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@id/search_btn"
+            app:layout_constraintHorizontal_chainStyle="spread_inside"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
-        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/toolbar_title"
-            style="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="center"
-            android:ellipsize="end"
-            android:maxLines="1"
-            android:textColor="?actionBarTintColor"
-            android:textSize="20sp"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:text="Title Text" />
-
         <com.google.android.material.button.MaterialButton
             android:id="@+id/search_btn"
-            style="@style/Theme.Widget.Button.TextButton"
-            android:textSize="16sp"
+            style="@style/Theme.Widget.Button.Primary"
             android:layout_width="wrap_content"
-            android:textColor="?attr/tabBarIconColor"
-            android:layout_height="match_parent"
-            android:text="@string/search"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="48dp"
+            android:layout_marginEnd="16dp"
+            android:text="@string/filter"
+            app:flow_verticalBias="1.0"
+            app:iconTint="?colorAccent"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
+            app:layout_constraintHorizontal_chainStyle="spread"
+            app:layout_constraintStart_toEndOf="@id/reset_btn"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintWidth_min="150dp" />
+
+        <View
+            android:id="@+id/bottom_divider"
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            android:background="@color/divider"/>
+    </androidx.constraintlayout.widget.ConstraintLayout>
 </androidx.constraintlayout.widget.ConstraintLayout>
-</FrameLayout>

app/src/main/res/values/attrs.xml

@@ -19,7 +19,7 @@
     <attr name="tabBarIconInactive" format="reference|integer"/>
     <attr name="tabHighlightBackground" format="color"/>
 
-    <declare-styleable name="ReaderSpinnerView">
+    <declare-styleable name="MaterialSpinnerView">
         <attr name="title" format="reference|string"/>
         <attr name="android:entries"/>
         <attr name="summary" format="reference|string" />