Get rid of SlidingPaneLayout in settings

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/BasePreferenceFragment.kt

@@ -9,10 +9,10 @@ import androidx.core.view.updatePadding
 import androidx.preference.PreferenceFragmentCompat
 import androidx.recyclerview.widget.RecyclerView
 import dagger.hilt.android.AndroidEntryPoint
+import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.ui.util.RecyclerViewOwner
 import org.koitharu.kotatsu.core.ui.util.WindowInsetsDelegate
-import org.koitharu.kotatsu.settings.SettingsHeadersFragment
 import javax.inject.Inject
 
 @Suppress("LeakingThis")
@@ -56,9 +56,11 @@ abstract class BasePreferenceFragment(@StringRes private val titleId: Int) :
 		)
 	}
 
-	@Suppress("UsePropertyAccessSyntax")
 	protected fun setTitle(title: CharSequence) {
-		(parentFragment as? SettingsHeadersFragment)?.setTitle(title)
-			?: activity?.setTitle(title)
+		activity?.let {
+			if (!it.resources.getBoolean(R.bool.is_tablet)) {
+				it.title = title
+			}
+		}
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/settings/SettingsActivity.kt

@@ -6,7 +6,9 @@ import android.content.Intent
 import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
+import android.view.ViewGroup.MarginLayoutParams
 import androidx.core.graphics.Insets
+import androidx.core.view.updateLayoutParams
 import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
@@ -43,10 +45,18 @@ class SettingsActivity :
 		super.onCreate(savedInstanceState)
 		setContentView(ActivitySettingsBinding.inflate(layoutInflater))
 		supportActionBar?.setDisplayHomeAsUpEnabled(true)
-
-		if (supportFragmentManager.findFragmentById(R.id.container) == null) {
+		val isMasterDetails = viewBinding.containerMaster != null
+		val fm = supportFragmentManager
+		val currentFragment = fm.findFragmentById(R.id.container)
+		if (currentFragment == null || (isMasterDetails && currentFragment is RootSettingsFragment)) {
 			openDefaultFragment()
 		}
+		if (isMasterDetails && fm.findFragmentById(R.id.container_master) == null) {
+			supportFragmentManager.commit {
+				setReorderingAllowed(true)
+				replace(R.id.container_master, RootSettingsFragment())
+			}
+		}
 	}
 
 	override fun onTitleChanged(title: CharSequence?, color: Int) {
@@ -90,7 +100,6 @@ class SettingsActivity :
 		}
 	}
 
-	@Suppress("DEPRECATION")
 	override fun onPreferenceStartFragment(
 		caller: PreferenceFragmentCompat,
 		pref: Preference,
@@ -98,32 +107,35 @@ class SettingsActivity :
 		val fm = supportFragmentManager
 		val fragment = fm.fragmentFactory.instantiate(classLoader, pref.fragment ?: return false)
 		fragment.arguments = pref.extras
-		fragment.setTargetFragment(caller, 0)
-		openFragment(fragment)
+		openFragment(fragment, isFromRoot = caller is RootSettingsFragment)
 		return true
 	}
 
 	override fun onWindowInsetsChanged(insets: Insets) {
-		viewBinding.appbar.updatePadding(
-			left = insets.left,
-			right = insets.right,
-		)
-		viewBinding.container.updatePadding(
+		viewBinding.root.updatePadding(
 			left = insets.left,
 			right = insets.right,
 		)
+		viewBinding.cardDetails?.updateLayoutParams<MarginLayoutParams> {
+			bottomMargin = marginStart + insets.bottom
+		}
 	}
 
-	fun openFragment(fragment: Fragment) {
+	fun openFragment(fragment: Fragment, isFromRoot: Boolean) {
+		val hasFragment = supportFragmentManager.findFragmentById(R.id.container) != null
+		val isMasterDetail = viewBinding.containerMaster != null
 		supportFragmentManager.commit {
 			setReorderingAllowed(true)
 			replace(R.id.container, fragment)
-			setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
-			addToBackStack(null)
+			setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
+			if (!isMasterDetail || (hasFragment && !isFromRoot)) {
+				addToBackStack(null)
+			}
 		}
 	}
 
 	private fun openDefaultFragment() {
+		val hasMaster = viewBinding.containerMaster != null
 		val fragment = when (intent?.action) {
 			ACTION_READER -> ReaderSettingsFragment()
 			ACTION_SUGGESTIONS -> SuggestionsSettingsFragment()
@@ -138,12 +150,12 @@ class SettingsActivity :
 				when (intent.data?.host) {
 					HOST_ABOUT -> AboutSettingsFragment()
 					HOST_SYNC_SETTINGS -> SyncSettingsFragment()
-					else -> SettingsHeadersFragment()
+					else -> null
 				}
 			}
 
-			else -> SettingsHeadersFragment()
-		}
+			else -> null
+		} ?: if (hasMaster) AppearanceSettingsFragment() else RootSettingsFragment()
 		supportFragmentManager.commit {
 			setReorderingAllowed(true)
 			replace(R.id.container, fragment)

app/src/main/kotlin/org/koitharu/kotatsu/settings/SettingsHeadersFragment.kt

@@ -1,49 +0,0 @@
-package org.koitharu.kotatsu.settings
-
-import android.os.Bundle
-import android.view.View
-import androidx.fragment.app.Fragment
-import androidx.fragment.app.FragmentTransaction
-import androidx.fragment.app.commit
-import androidx.preference.PreferenceFragmentCompat
-import androidx.preference.PreferenceHeaderFragmentCompat
-import androidx.slidingpanelayout.widget.SlidingPaneLayout
-import org.koitharu.kotatsu.R
-
-class SettingsHeadersFragment : PreferenceHeaderFragmentCompat(), SlidingPaneLayout.PanelSlideListener {
-
-	private var currentTitle: CharSequence? = null
-
-	override fun onCreatePreferenceHeader(): PreferenceFragmentCompat = RootSettingsFragment()
-
-	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-		super.onViewCreated(view, savedInstanceState)
-		slidingPaneLayout.addPanelSlideListener(this)
-	}
-
-	override fun onPanelSlide(panel: View, slideOffset: Float) = Unit
-
-	override fun onPanelOpened(panel: View) {
-		activity?.title = currentTitle ?: getString(R.string.settings)
-	}
-
-	override fun onPanelClosed(panel: View) {
-		activity?.setTitle(R.string.settings)
-	}
-
-	fun setTitle(title: CharSequence?) {
-		currentTitle = title
-		if (slidingPaneLayout.width != 0 && slidingPaneLayout.isOpen) {
-			activity?.title = title
-		}
-	}
-
-	fun openFragment(fragment: Fragment) {
-		childFragmentManager.commit {
-			setReorderingAllowed(true)
-			replace(androidx.preference.R.id.preferences_detail, fragment)
-			setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
-			addToBackStack(null)
-		}
-	}
-}

app/src/main/kotlin/org/koitharu/kotatsu/settings/sources/SourcesListFragment.kt

@@ -26,7 +26,6 @@ import org.koitharu.kotatsu.core.util.ext.observeEvent
 import org.koitharu.kotatsu.databinding.FragmentSettingsSourcesBinding
 import org.koitharu.kotatsu.main.ui.owners.AppBarOwner
 import org.koitharu.kotatsu.settings.SettingsActivity
-import org.koitharu.kotatsu.settings.SettingsHeadersFragment
 import org.koitharu.kotatsu.settings.SourceSettingsFragment
 import org.koitharu.kotatsu.settings.sources.adapter.SourceConfigAdapter
 import org.koitharu.kotatsu.settings.sources.adapter.SourceConfigListener
@@ -90,8 +89,7 @@ class SourcesListFragment :
 
 	override fun onItemSettingsClick(item: SourceConfigItem.SourceItem) {
 		val fragment = SourceSettingsFragment.newInstance(item.source)
-		(parentFragment as? SettingsHeadersFragment)?.openFragment(fragment)
-			?: (activity as? SettingsActivity)?.openFragment(fragment)
+		(activity as? SettingsActivity)?.openFragment(fragment, false)
 	}
 
 	override fun onItemEnabledChanged(item: SourceConfigItem.SourceItem, isEnabled: Boolean) {

app/src/main/res/layout-w600dp/activity_settings.xml

@@ -1,17 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
+<androidx.constraintlayout.widget.ConstraintLayout
 	xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
 	android:layout_width="match_parent"
-	android:layout_height="match_parent"
-	android:orientation="vertical">
+	android:layout_height="match_parent">
 
 	<com.google.android.material.appbar.AppBarLayout
 		android:id="@+id/appbar"
-		android:layout_width="match_parent"
+		android:layout_width="0dp"
 		android:layout_height="wrap_content"
+		android:elevation="0dp"
 		android:fitsSystemWindows="true"
-		app:elevation="@dimen/design_appbar_elevation"
+		app:elevation="0dp"
 		app:layout_constraintEnd_toEndOf="parent"
 		app:layout_constraintStart_toStartOf="parent"
 		app:layout_constraintTop_toTopOf="parent"
@@ -25,8 +25,36 @@
 	</com.google.android.material.appbar.AppBarLayout>
 
 	<androidx.fragment.app.FragmentContainerView
-		android:id="@id/container"
-		android:layout_width="match_parent"
-		android:layout_height="match_parent" />
+		android:id="@+id/container_master"
+		android:layout_width="0dp"
+		android:layout_height="0dp"
+		app:layout_constraintBottom_toBottomOf="parent"
+		app:layout_constraintEnd_toStartOf="@id/card_details"
+		app:layout_constraintStart_toStartOf="parent"
+		app:layout_constraintTop_toBottomOf="@id/appbar"
+		app:layout_constraintWidth_max="400dp"
+		app:layout_constraintWidth_min="320dp"
+		app:layout_constraintWidth_percent="0.35" />
 
-</LinearLayout>
+	<com.google.android.material.card.MaterialCardView
+		android:id="@+id/card_details"
+		android:layout_width="0dp"
+		android:layout_height="0dp"
+		android:layout_marginStart="@dimen/side_card_offset"
+		android:layout_marginTop="2dp"
+		android:layout_marginEnd="@dimen/side_card_offset"
+		android:layout_marginBottom="@dimen/side_card_offset"
+		app:cardBackgroundColor="?colorBackgroundFloating"
+		app:layout_constraintBottom_toBottomOf="parent"
+		app:layout_constraintEnd_toEndOf="parent"
+		app:layout_constraintStart_toEndOf="@id/container_master"
+		app:layout_constraintTop_toBottomOf="@id/appbar">
+
+		<androidx.fragment.app.FragmentContainerView
+			android:id="@+id/container"
+			android:layout_width="match_parent"
+			android:layout_height="match_parent" />
+
+	</com.google.android.material.card.MaterialCardView>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -13,8 +13,9 @@
 
 		<com.google.android.material.appbar.CollapsingToolbarLayout
 			android:id="@+id/collapsingToolbarLayout"
+			style="?collapsingToolbarLayoutMediumStyle"
 			android:layout_width="match_parent"
-			android:layout_height="?attr/collapsingToolbarLayoutMediumSize"
+			android:layout_height="?collapsingToolbarLayoutMediumSize"
 			app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
 			app:toolbarId="@id/toolbar">