Merge pull request #9207 from cern1710/list-view-alt-alt-implementation

undefined

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListFragment.java

@@ -5,7 +5,6 @@ import static org.schabi.newpipe.ktx.ViewUtils.animateHideRecyclerViewAllowingSc
 
 import android.content.Context;
 import android.content.SharedPreferences;
-import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.os.Bundle;
 import android.util.Log;
@@ -31,6 +30,7 @@ import org.schabi.newpipe.info_list.dialog.InfoItemDialog;
 import org.schabi.newpipe.util.NavigationHelper;
 import org.schabi.newpipe.util.OnClickGesture;
 import org.schabi.newpipe.util.StateSaver;
+import org.schabi.newpipe.util.ThemeHelper;
 import org.schabi.newpipe.views.SuperScrollLayoutManager;
 
 import java.util.List;
@@ -476,15 +476,6 @@ public abstract class BaseListFragment<I, N> extends BaseStateFragment<I>
     }
 
     protected boolean isGridLayout() {
-        final String listMode = PreferenceManager.getDefaultSharedPreferences(activity)
+        return ThemeHelper.shouldUseGridLayout(activity);
-                .getString(getString(R.string.list_view_mode_key),
-                        getString(R.string.list_view_mode_value));
-        if ("auto".equals(listMode)) {
-            final Configuration configuration = getResources().getConfiguration();
-            return configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
-                    && configuration.isLayoutSizeAtLeast(Configuration.SCREENLAYOUT_SIZE_LARGE);
-        } else {
-            return "grid".equals(listMode);
-        }
     }
 }

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionFragment.kt

@@ -22,7 +22,6 @@ import androidx.lifecycle.ViewModelProvider
 import androidx.recyclerview.widget.GridLayoutManager
 import com.xwray.groupie.Group
 import com.xwray.groupie.GroupAdapter
-import com.xwray.groupie.Item
 import com.xwray.groupie.Section
 import com.xwray.groupie.viewbinding.GroupieViewHolder
 import icepick.State
@@ -43,11 +42,13 @@ import org.schabi.newpipe.local.subscription.dialog.FeedGroupDialog
 import org.schabi.newpipe.local.subscription.dialog.FeedGroupReorderDialog
 import org.schabi.newpipe.local.subscription.item.ChannelItem
 import org.schabi.newpipe.local.subscription.item.EmptyPlaceholderItem
-import org.schabi.newpipe.local.subscription.item.FeedGroupAddItem
+import org.schabi.newpipe.local.subscription.item.FeedGroupAddNewGridItem
+import org.schabi.newpipe.local.subscription.item.FeedGroupAddNewItem
+import org.schabi.newpipe.local.subscription.item.FeedGroupCardGridItem
 import org.schabi.newpipe.local.subscription.item.FeedGroupCardItem
 import org.schabi.newpipe.local.subscription.item.FeedGroupCarouselItem
-import org.schabi.newpipe.local.subscription.item.HeaderWithMenuItem
+import org.schabi.newpipe.local.subscription.item.GroupsHeader
-import org.schabi.newpipe.local.subscription.item.HeaderWithMenuItem.Companion.PAYLOAD_UPDATE_VISIBILITY_MENU_ITEM
+import org.schabi.newpipe.local.subscription.item.Header
 import org.schabi.newpipe.local.subscription.services.SubscriptionsExportService
 import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService
 import org.schabi.newpipe.local.subscription.services.SubscriptionsImportService.KEY_MODE
@@ -74,9 +75,9 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     private val disposables: CompositeDisposable = CompositeDisposable()
 
     private val groupAdapter = GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>()
-    private val feedGroupsSection = Section()
+    private lateinit var carouselAdapter: GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>
-    private var feedGroupsCarousel: FeedGroupCarouselItem? = null
+    private lateinit var feedGroupsCarousel: FeedGroupCarouselItem
-    private lateinit var feedGroupsSortMenuItem: HeaderWithMenuItem
+    private lateinit var feedGroupsSortMenuItem: GroupsHeader
     private val subscriptionsSection = Section()
 
     private val requestExportLauncher =
@@ -90,7 +91,7 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
 
     @State
     @JvmField
-    var feedGroupsListState: Parcelable? = null
+    var feedGroupsCarouselState: Parcelable? = null
 
     init {
         setHasOptionsMenu(true)
@@ -100,11 +101,6 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     // Fragment LifeCycle
     // /////////////////////////////////////////////////////////////////////////
 
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setupInitialLayout()
-    }
-
     override fun onAttach(context: Context) {
         super.onAttach(context)
         subscriptionManager = SubscriptionManager(requireContext())
@@ -117,7 +113,7 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     override fun onPause() {
         super.onPause()
         itemsListState = binding.itemsList.layoutManager?.onSaveInstanceState()
-        feedGroupsListState = feedGroupsCarousel?.onSaveInstanceState()
+        feedGroupsCarouselState = feedGroupsCarousel.onSaveInstanceState()
     }
 
     override fun onDestroy() {
@@ -184,7 +180,7 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
         menuItem: MenuItem,
         onClick: Runnable
     ): MenuItem {
-        menuItem.setOnMenuItemClickListener { _ ->
+        menuItem.setOnMenuItemClickListener {
             onClick.run()
             true
         }
@@ -245,51 +241,6 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     // Fragment Views
     // ////////////////////////////////////////////////////////////////////////
 
-    private fun setupInitialLayout() {
-        Section().apply {
-            val carouselAdapter = GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>()
-
-            carouselAdapter.add(FeedGroupCardItem(-1, getString(R.string.all), FeedGroupIcon.RSS))
-            carouselAdapter.add(feedGroupsSection)
-            carouselAdapter.add(FeedGroupAddItem())
-
-            carouselAdapter.setOnItemClickListener { item, _ ->
-                listenerFeedGroups.selected(item)
-            }
-            carouselAdapter.setOnItemLongClickListener { item, _ ->
-                if (item is FeedGroupCardItem) {
-                    if (item.groupId == FeedGroupEntity.GROUP_ALL_ID) {
-                        return@setOnItemLongClickListener false
-                    }
-                }
-                listenerFeedGroups.held(item)
-                return@setOnItemLongClickListener true
-            }
-
-            feedGroupsCarousel = FeedGroupCarouselItem(requireContext(), carouselAdapter)
-            feedGroupsSortMenuItem = HeaderWithMenuItem(
-                getString(R.string.feed_groups_header_title),
-                R.drawable.ic_sort,
-                menuItemOnClickListener = ::openReorderDialog
-            )
-            add(Section(feedGroupsSortMenuItem, listOf(feedGroupsCarousel)))
-
-            groupAdapter.add(this)
-        }
-
-        subscriptionsSection.setPlaceholder(EmptyPlaceholderItem())
-        subscriptionsSection.setHideWhenEmpty(true)
-
-        groupAdapter.add(
-            Section(
-                HeaderWithMenuItem(
-                    getString(R.string.tab_subscriptions)
-                ),
-                listOf(subscriptionsSection)
-            )
-        )
-    }
-
     override fun initViews(rootView: View, savedInstanceState: Bundle?) {
         super.initViews(rootView, savedInstanceState)
         _binding = FragmentSubscriptionBinding.bind(rootView)
@@ -299,10 +250,83 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
             spanSizeLookup = groupAdapter.spanSizeLookup
         }
         binding.itemsList.adapter = groupAdapter
+        binding.itemsList.itemAnimator = null
 
-        viewModel = ViewModelProvider(this).get(SubscriptionViewModel::class.java)
+        viewModel = ViewModelProvider(this)[SubscriptionViewModel::class.java]
         viewModel.stateLiveData.observe(viewLifecycleOwner) { it?.let(this::handleResult) }
         viewModel.feedGroupsLiveData.observe(viewLifecycleOwner) { it?.let(this::handleFeedGroups) }
+
+        setupInitialLayout()
+    }
+
+    private fun setupInitialLayout() {
+        Section().apply {
+            carouselAdapter = GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>()
+
+            carouselAdapter.setOnItemClickListener { item, _ ->
+                when (item) {
+                    is FeedGroupCardItem ->
+                        NavigationHelper.openFeedFragment(fm, item.groupId, item.name)
+                    is FeedGroupCardGridItem ->
+                        NavigationHelper.openFeedFragment(fm, item.groupId, item.name)
+                    is FeedGroupAddNewItem ->
+                        FeedGroupDialog.newInstance().show(fm, null)
+                    is FeedGroupAddNewGridItem ->
+                        FeedGroupDialog.newInstance().show(fm, null)
+                }
+            }
+            carouselAdapter.setOnItemLongClickListener { item, _ ->
+                if ((
+                    item is FeedGroupCardItem &&
+                        item.groupId == FeedGroupEntity.GROUP_ALL_ID
+                    ) ||
+                    (
+                        item is FeedGroupCardGridItem &&
+                            item.groupId == FeedGroupEntity.GROUP_ALL_ID
+                        )
+                ) {
+                    return@setOnItemLongClickListener false
+                }
+
+                when (item) {
+                    is FeedGroupCardItem ->
+                        FeedGroupDialog.newInstance(item.groupId).show(fm, null)
+                    is FeedGroupCardGridItem ->
+                        FeedGroupDialog.newInstance(item.groupId).show(fm, null)
+                }
+                return@setOnItemLongClickListener true
+            }
+
+            feedGroupsCarousel = FeedGroupCarouselItem(
+                carouselAdapter = carouselAdapter,
+                listViewMode = viewModel.getListViewMode()
+            )
+
+            feedGroupsSortMenuItem = GroupsHeader(
+                title = getString(R.string.feed_groups_header_title),
+                onSortClicked = ::openReorderDialog,
+                onToggleListViewModeClicked = ::toggleListViewMode,
+                listViewMode = viewModel.getListViewMode(),
+            )
+
+            add(Section(feedGroupsSortMenuItem, listOf(feedGroupsCarousel)))
+            groupAdapter.clear()
+            groupAdapter.add(this)
+        }
+
+        subscriptionsSection.setPlaceholder(EmptyPlaceholderItem())
+        subscriptionsSection.setHideWhenEmpty(true)
+
+        groupAdapter.add(
+            Section(
+                Header(getString(R.string.tab_subscriptions)),
+                listOf(subscriptionsSection)
+            )
+        )
+    }
+
+    private fun toggleListViewMode() {
+        viewModel.setListViewMode(!viewModel.getListViewMode())
     }
 
     private fun showLongTapDialog(selectedItem: ChannelInfoItem) {
@@ -346,21 +370,6 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     override fun doInitialLoadLogic() = Unit
     override fun startLoading(forceLoad: Boolean) = Unit
 
-    private val listenerFeedGroups = object : OnClickGesture<Item<*>> {
-        override fun selected(selectedItem: Item<*>?) {
-            when (selectedItem) {
-                is FeedGroupCardItem -> NavigationHelper.openFeedFragment(fm, selectedItem.groupId, selectedItem.name)
-                is FeedGroupAddItem -> FeedGroupDialog.newInstance().show(fm, null)
-            }
-        }
-
-        override fun held(selectedItem: Item<*>?) {
-            when (selectedItem) {
-                is FeedGroupCardItem -> FeedGroupDialog.newInstance(selectedItem.groupId).show(fm, null)
-            }
-        }
-    }
-
     private val listenerChannelItem = object : OnClickGesture<ChannelInfoItem> {
         override fun selected(selectedItem: ChannelInfoItem) = NavigationHelper.openChannelFragment(
             fm,
@@ -403,15 +412,39 @@ class SubscriptionFragment : BaseStateFragment<SubscriptionState>() {
     }
 
     private fun handleFeedGroups(groups: List<Group>) {
-        feedGroupsSection.update(groups)
+        val listViewMode = viewModel.getListViewMode()
 
-        if (feedGroupsListState != null) {
+        if (feedGroupsCarouselState != null) {
-            feedGroupsCarousel?.onRestoreInstanceState(feedGroupsListState)
+            feedGroupsCarousel.onRestoreInstanceState(feedGroupsCarouselState)
-            feedGroupsListState = null
+            feedGroupsCarouselState = null
         }
 
-        feedGroupsSortMenuItem.showMenuItem = groups.size > 1
+        feedGroupsCarousel.listViewMode = listViewMode
-        binding.itemsList.post { feedGroupsSortMenuItem.notifyChanged(PAYLOAD_UPDATE_VISIBILITY_MENU_ITEM) }
+        feedGroupsSortMenuItem.showSortButton = groups.size > 1
+        feedGroupsSortMenuItem.listViewMode = listViewMode
+        binding.itemsList.post {
+            if (context == null) {
+                // since this part was posted to the next UI cycle, the fragment might have been
+                // removed in the meantime
+                return@post
+            }
+
+            feedGroupsCarousel.notifyChanged(FeedGroupCarouselItem.PAYLOAD_UPDATE_LIST_VIEW_MODE)
+            feedGroupsSortMenuItem.notifyChanged(GroupsHeader.PAYLOAD_UPDATE_ICONS)
+
+            // update items here to prevent flickering
+            carouselAdapter.apply {
+                clear()
+                if (listViewMode) {
+                    add(FeedGroupAddNewItem())
+                    add(FeedGroupCardItem(-1, getString(R.string.all), FeedGroupIcon.RSS))
+                } else {
+                    add(FeedGroupAddNewGridItem())
+                    add(FeedGroupCardGridItem(-1, getString(R.string.all), FeedGroupIcon.RSS))
+                }
+                addAll(groups)
+            }
+        }
     }
 
     // /////////////////////////////////////////////////////////////////////////

app/src/main/java/org/schabi/newpipe/local/subscription/SubscriptionViewModel.kt

@@ -5,25 +5,42 @@ import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import com.xwray.groupie.Group
+import io.reactivex.rxjava3.core.Flowable
+import io.reactivex.rxjava3.processors.BehaviorProcessor
 import io.reactivex.rxjava3.schedulers.Schedulers
 import org.schabi.newpipe.local.feed.FeedDatabaseManager
 import org.schabi.newpipe.local.subscription.item.ChannelItem
+import org.schabi.newpipe.local.subscription.item.FeedGroupCardGridItem
 import org.schabi.newpipe.local.subscription.item.FeedGroupCardItem
 import org.schabi.newpipe.util.DEFAULT_THROTTLE_TIMEOUT
+import org.schabi.newpipe.util.ThemeHelper
 import java.util.concurrent.TimeUnit
 
 class SubscriptionViewModel(application: Application) : AndroidViewModel(application) {
     private var feedDatabaseManager: FeedDatabaseManager = FeedDatabaseManager(application)
     private var subscriptionManager = SubscriptionManager(application)
 
+    // true -> list view, false -> grid view
+    private val listViewMode = BehaviorProcessor.createDefault(
+        !ThemeHelper.shouldUseGridLayout(application)
+    )
+    private val listViewModeFlowable = listViewMode.distinctUntilChanged()
+
     private val mutableStateLiveData = MutableLiveData<SubscriptionState>()
     private val mutableFeedGroupsLiveData = MutableLiveData<List<Group>>()
     val stateLiveData: LiveData<SubscriptionState> = mutableStateLiveData
     val feedGroupsLiveData: LiveData<List<Group>> = mutableFeedGroupsLiveData
 
-    private var feedGroupItemsDisposable = feedDatabaseManager.groups()
+    private var feedGroupItemsDisposable = Flowable
+        .combineLatest(
+            feedDatabaseManager.groups(),
+            listViewModeFlowable,
+            ::Pair
+        )
         .throttleLatest(DEFAULT_THROTTLE_TIMEOUT, TimeUnit.MILLISECONDS)
-        .map { it.map(::FeedGroupCardItem) }
+        .map { (feedGroups, listViewMode) ->
+            feedGroups.map(if (listViewMode) ::FeedGroupCardItem else ::FeedGroupCardGridItem)
+        }
         .subscribeOn(Schedulers.io())
         .subscribe(
             { mutableFeedGroupsLiveData.postValue(it) },
@@ -45,6 +62,14 @@ class SubscriptionViewModel(application: Application) : AndroidViewModel(applica
         feedGroupItemsDisposable.dispose()
     }
 
+    fun setListViewMode(newListViewMode: Boolean) {
+        listViewMode.onNext(newListViewMode)
+    }
+
+    fun getListViewMode(): Boolean {
+        return listViewMode.value ?: true
+    }
+
     sealed class SubscriptionState {
         data class LoadedState(val subscriptions: List<Group>) : SubscriptionState()
         data class ErrorState(val error: Throwable? = null) : SubscriptionState()

app/src/main/java/org/schabi/newpipe/local/subscription/decoration/FeedGroupCarouselDecoration.kt

@@ -1,35 +0,0 @@
-package org.schabi.newpipe.local.subscription.decoration
-
-import android.content.Context
-import android.graphics.Rect
-import android.view.View
-import androidx.recyclerview.widget.RecyclerView
-import org.schabi.newpipe.R
-
-class FeedGroupCarouselDecoration(context: Context) : RecyclerView.ItemDecoration() {
-
-    private val marginStartEnd: Int
-    private val marginTopBottom: Int
-    private val marginBetweenItems: Int
-
-    init {
-        with(context.resources) {
-            marginStartEnd = getDimensionPixelOffset(R.dimen.feed_group_carousel_start_end_margin)
-            marginTopBottom = getDimensionPixelOffset(R.dimen.feed_group_carousel_top_bottom_margin)
-            marginBetweenItems = getDimensionPixelOffset(R.dimen.feed_group_carousel_between_items_margin)
-        }
-    }
-
-    override fun getItemOffsets(outRect: Rect, child: View, parent: RecyclerView, state: RecyclerView.State) {
-        val childAdapterPosition = parent.getChildAdapterPosition(child)
-        val childAdapterCount = parent.adapter?.itemCount ?: 0
-
-        outRect.set(marginBetweenItems, marginTopBottom, 0, marginTopBottom)
-
-        if (childAdapterPosition == 0) {
-            outRect.left = marginStartEnd
-        } else if (childAdapterPosition == childAdapterCount - 1) {
-            outRect.right = marginStartEnd
-        }
-    }
-}

app/src/main/java/org/schabi/newpipe/local/subscription/item/FeedGroupAddNewGridItem.kt

@@ -0,0 +1,14 @@
+package org.schabi.newpipe.local.subscription.item
+
+import android.view.View
+import com.xwray.groupie.viewbinding.BindableItem
+import org.schabi.newpipe.R
+import org.schabi.newpipe.databinding.FeedGroupAddNewGridItemBinding
+
+class FeedGroupAddNewGridItem : BindableItem<FeedGroupAddNewGridItemBinding>() {
+    override fun getLayout(): Int = R.layout.feed_group_add_new_grid_item
+    override fun initializeViewBinding(view: View) = FeedGroupAddNewGridItemBinding.bind(view)
+    override fun bind(viewBinding: FeedGroupAddNewGridItemBinding, position: Int) {
+        // this is a static item, nothing to do here
+    }
+}

app/src/main/java/org/schabi/newpipe/local/subscription/item/FeedGroupAddNewItem.kt

@@ -5,8 +5,10 @@ import com.xwray.groupie.viewbinding.BindableItem
 import org.schabi.newpipe.R
 import org.schabi.newpipe.databinding.FeedGroupAddNewItemBinding
 
-class FeedGroupAddItem : BindableItem<FeedGroupAddNewItemBinding>() {
+class FeedGroupAddNewItem : BindableItem<FeedGroupAddNewItemBinding>() {
     override fun getLayout(): Int = R.layout.feed_group_add_new_item
-    override fun bind(viewBinding: FeedGroupAddNewItemBinding, position: Int) {}
     override fun initializeViewBinding(view: View) = FeedGroupAddNewItemBinding.bind(view)
+    override fun bind(viewBinding: FeedGroupAddNewItemBinding, position: Int) {
+        // this is a static item, nothing to do here
+    }
 }

app/src/main/java/org/schabi/newpipe/local/subscription/item/FeedGroupCardGridItem.kt

@@ -0,0 +1,32 @@
+package org.schabi.newpipe.local.subscription.item
+
+import android.view.View
+import com.xwray.groupie.viewbinding.BindableItem
+import org.schabi.newpipe.R
+import org.schabi.newpipe.database.feed.model.FeedGroupEntity
+import org.schabi.newpipe.databinding.FeedGroupCardGridItemBinding
+import org.schabi.newpipe.local.subscription.FeedGroupIcon
+
+data class FeedGroupCardGridItem(
+    val groupId: Long = FeedGroupEntity.GROUP_ALL_ID,
+    val name: String,
+    val icon: FeedGroupIcon,
+) : BindableItem<FeedGroupCardGridItemBinding>() {
+    constructor (feedGroupEntity: FeedGroupEntity) : this(feedGroupEntity.uid, feedGroupEntity.name, feedGroupEntity.icon)
+
+    override fun getId(): Long {
+        return when (groupId) {
+            FeedGroupEntity.GROUP_ALL_ID -> super.getId()
+            else -> groupId
+        }
+    }
+
+    override fun getLayout(): Int = R.layout.feed_group_card_grid_item
+
+    override fun bind(viewBinding: FeedGroupCardGridItemBinding, position: Int) {
+        viewBinding.title.text = name
+        viewBinding.icon.setImageResource(icon.getDrawableRes())
+    }
+
+    override fun initializeViewBinding(view: View) = FeedGroupCardGridItemBinding.bind(view)
+}

app/src/main/java/org/schabi/newpipe/local/subscription/item/FeedGroupCarouselItem.kt

@@ -1,60 +1,85 @@
 package org.schabi.newpipe.local.subscription.item
 
-import android.content.Context
 import android.os.Parcelable
 import android.view.View
+import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
 import com.xwray.groupie.GroupAdapter
 import com.xwray.groupie.viewbinding.BindableItem
 import com.xwray.groupie.viewbinding.GroupieViewHolder
 import org.schabi.newpipe.R
 import org.schabi.newpipe.databinding.FeedItemCarouselBinding
-import org.schabi.newpipe.local.subscription.decoration.FeedGroupCarouselDecoration
+import org.schabi.newpipe.util.DeviceUtils
+import java.lang.Integer.max
 
 class FeedGroupCarouselItem(
-    context: Context,
+    private val carouselAdapter: GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>,
-    private val carouselAdapter: GroupAdapter<GroupieViewHolder<FeedItemCarouselBinding>>
+    var listViewMode: Boolean
 ) : BindableItem<FeedItemCarouselBinding>() {
-    private val feedGroupCarouselDecoration = FeedGroupCarouselDecoration(context)
+    companion object {
+        const val PAYLOAD_UPDATE_LIST_VIEW_MODE = 2
+    }
 
-    private var linearLayoutManager: LinearLayoutManager? = null
+    private var carouselLayoutManager: LinearLayoutManager? = null
     private var listState: Parcelable? = null
 
     override fun getLayout() = R.layout.feed_item_carousel
 
     fun onSaveInstanceState(): Parcelable? {
-        listState = linearLayoutManager?.onSaveInstanceState()
+        listState = carouselLayoutManager?.onSaveInstanceState()
         return listState
     }
 
     fun onRestoreInstanceState(state: Parcelable?) {
-        linearLayoutManager?.onRestoreInstanceState(state)
+        carouselLayoutManager?.onRestoreInstanceState(state)
         listState = state
     }
 
     override fun initializeViewBinding(view: View): FeedItemCarouselBinding {
-        val viewHolder = FeedItemCarouselBinding.bind(view)
+        val viewBinding = FeedItemCarouselBinding.bind(view)
+        updateViewMode(viewBinding)
+        return viewBinding
+    }
 
-        linearLayoutManager = LinearLayoutManager(view.context, RecyclerView.HORIZONTAL, false)
+    override fun bind(
-
+        viewBinding: FeedItemCarouselBinding,
-        viewHolder.recyclerView.apply {
+        position: Int,
-            layoutManager = linearLayoutManager
+        payloads: MutableList<Any>
-            adapter = carouselAdapter
+    ) {
-            addItemDecoration(feedGroupCarouselDecoration)
+        if (payloads.contains(PAYLOAD_UPDATE_LIST_VIEW_MODE)) {
+            updateViewMode(viewBinding)
+            return
         }
 
-        return viewHolder
+        super.bind(viewBinding, position, payloads)
     }
 
     override fun bind(viewBinding: FeedItemCarouselBinding, position: Int) {
         viewBinding.recyclerView.apply { adapter = carouselAdapter }
-        linearLayoutManager?.onRestoreInstanceState(listState)
+        carouselLayoutManager?.onRestoreInstanceState(listState)
     }
 
     override fun unbind(viewHolder: GroupieViewHolder<FeedItemCarouselBinding>) {
         super.unbind(viewHolder)
+        listState = carouselLayoutManager?.onSaveInstanceState()
+    }
 
-        listState = linearLayoutManager?.onSaveInstanceState()
+    private fun updateViewMode(viewBinding: FeedItemCarouselBinding) {
+        viewBinding.recyclerView.apply { adapter = carouselAdapter }
+
+        val context = viewBinding.root.context
+        carouselLayoutManager = if (listViewMode) {
+            LinearLayoutManager(context)
+        } else {
+            GridLayoutManager(
+                context,
+                max(1, viewBinding.recyclerView.width / DeviceUtils.dpToPx(112, context))
+            )
+        }
+
+        viewBinding.recyclerView.apply {
+            layoutManager = carouselLayoutManager
+            adapter = carouselAdapter
+        }
     }
 }

app/src/main/java/org/schabi/newpipe/local/subscription/item/GroupsHeader.kt

@@ -0,0 +1,50 @@
+package org.schabi.newpipe.local.subscription.item
+
+import android.view.View
+import androidx.core.view.isVisible
+import com.xwray.groupie.viewbinding.BindableItem
+import org.schabi.newpipe.R
+import org.schabi.newpipe.databinding.SubscriptionGroupsHeaderBinding
+
+class GroupsHeader(
+    private val title: String,
+    private val onSortClicked: () -> Unit,
+    private val onToggleListViewModeClicked: () -> Unit,
+    var showSortButton: Boolean = true,
+    var listViewMode: Boolean = true
+) : BindableItem<SubscriptionGroupsHeaderBinding>() {
+    companion object {
+        const val PAYLOAD_UPDATE_ICONS = 1
+    }
+
+    override fun getLayout(): Int = R.layout.subscription_groups_header
+
+    override fun bind(
+        viewBinding: SubscriptionGroupsHeaderBinding,
+        position: Int,
+        payloads: MutableList<Any>
+    ) {
+        if (payloads.contains(PAYLOAD_UPDATE_ICONS)) {
+            updateIcons(viewBinding)
+            return
+        }
+
+        super.bind(viewBinding, position, payloads)
+    }
+
+    override fun bind(viewBinding: SubscriptionGroupsHeaderBinding, position: Int) {
+        viewBinding.headerTitle.text = title
+        viewBinding.headerSort.setOnClickListener { onSortClicked() }
+        viewBinding.headerToggleViewMode.setOnClickListener { onToggleListViewModeClicked() }
+        updateIcons(viewBinding)
+    }
+
+    override fun initializeViewBinding(view: View) = SubscriptionGroupsHeaderBinding.bind(view)
+
+    private fun updateIcons(viewBinding: SubscriptionGroupsHeaderBinding) {
+        viewBinding.headerToggleViewMode.setImageResource(
+            if (listViewMode) R.drawable.ic_apps else R.drawable.ic_list
+        )
+        viewBinding.headerSort.isVisible = showSortButton
+    }
+}

app/src/main/java/org/schabi/newpipe/local/subscription/item/Header.kt

@@ -0,0 +1,17 @@
+package org.schabi.newpipe.local.subscription.item
+
+import android.view.View
+import com.xwray.groupie.viewbinding.BindableItem
+import org.schabi.newpipe.R
+import org.schabi.newpipe.databinding.SubscriptionHeaderBinding
+
+class Header(private val title: String) : BindableItem<SubscriptionHeaderBinding>() {
+
+    override fun getLayout(): Int = R.layout.subscription_header
+
+    override fun bind(viewBinding: SubscriptionHeaderBinding, position: Int) {
+        viewBinding.root.text = title
+    }
+
+    override fun initializeViewBinding(view: View) = SubscriptionHeaderBinding.bind(view)
+}

app/src/main/java/org/schabi/newpipe/local/subscription/item/HeaderWithMenuItem.kt

@@ -1,50 +0,0 @@
-package org.schabi.newpipe.local.subscription.item
-
-import android.view.View
-import android.view.View.OnClickListener
-import androidx.annotation.DrawableRes
-import androidx.core.view.isVisible
-import com.xwray.groupie.viewbinding.BindableItem
-import org.schabi.newpipe.R
-import org.schabi.newpipe.databinding.HeaderWithMenuItemBinding
-
-class HeaderWithMenuItem(
-    val title: String,
-    @DrawableRes val itemIcon: Int = 0,
-    var showMenuItem: Boolean = true,
-    private val onClickListener: (() -> Unit)? = null,
-    private val menuItemOnClickListener: (() -> Unit)? = null
-) : BindableItem<HeaderWithMenuItemBinding>() {
-    companion object {
-        const val PAYLOAD_UPDATE_VISIBILITY_MENU_ITEM = 1
-    }
-
-    override fun getLayout(): Int = R.layout.header_with_menu_item
-
-    override fun bind(viewBinding: HeaderWithMenuItemBinding, position: Int, payloads: MutableList<Any>) {
-        if (payloads.contains(PAYLOAD_UPDATE_VISIBILITY_MENU_ITEM)) {
-            updateMenuItemVisibility(viewBinding)
-            return
-        }
-
-        super.bind(viewBinding, position, payloads)
-    }
-
-    override fun bind(viewBinding: HeaderWithMenuItemBinding, position: Int) {
-        viewBinding.headerTitle.text = title
-        viewBinding.headerMenuItem.setImageResource(itemIcon)
-
-        val listener = onClickListener?.let { OnClickListener { onClickListener.invoke() } }
-        viewBinding.root.setOnClickListener(listener)
-
-        val menuItemListener = menuItemOnClickListener?.let { OnClickListener { menuItemOnClickListener.invoke() } }
-        viewBinding.headerMenuItem.setOnClickListener(menuItemListener)
-        updateMenuItemVisibility(viewBinding)
-    }
-
-    override fun initializeViewBinding(view: View) = HeaderWithMenuItemBinding.bind(view)
-
-    private fun updateMenuItemVisibility(viewBinding: HeaderWithMenuItemBinding) {
-        viewBinding.headerMenuItem.isVisible = showMenuItem
-    }
-}

app/src/main/java/org/schabi/newpipe/util/ThemeHelper.java

@@ -349,7 +349,7 @@ public final class ThemeHelper {
             return false;
         } else if (listMode.equals(context.getString(R.string.list_view_mode_grid_key))) {
             return true;
-        } else {
+        } else /* listMode.equals("auto") */ {
             final Configuration configuration = context.getResources().getConfiguration();
             return configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
                     && configuration.isLayoutSizeAtLeast(Configuration.SCREENLAYOUT_SIZE_LARGE);

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

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.cardview.widget.CardView 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="wrap_content"
+    android:layout_gravity="center_vertical"
+    android:layout_margin="4dp"
+    android:clickable="true"
+    android:focusable="true"
+    android:foreground="?attr/selectableItemBackground"
+    app:cardBackgroundColor="?attr/card_item_background_color">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="?attr/dashed_border"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:padding="4dp">
+
+        <ImageView
+            android:id="@+id/icon"
+            android:layout_width="36dp"
+            android:layout_height="36dp"
+            android:layout_gravity="center"
+            android:padding="4dp"
+            android:scaleType="centerInside"
+            android:src="@drawable/ic_add"
+            tools:ignore="ContentDescription" />
+
+        <org.schabi.newpipe.views.NewPipeTextView
+            android:id="@+id/title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:ellipsize="end"
+            android:gravity="center"
+            android:maxLines="1"
+            android:text="@string/feed_create_new_group_button_title"
+            android:textAllCaps="true"
+            android:textColor="?attr/colorAccent"
+            android:textSize="14sp"
+            android:textStyle="bold" />
+    </LinearLayout>
+</androidx.cardview.widget.CardView>

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

@@ -2,9 +2,10 @@
 <androidx.cardview.widget.CardView 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="64dp"
+    android:layout_width="match_parent"
-    android:layout_height="48dp"
+    android:layout_height="wrap_content"
     android:layout_gravity="center_vertical"
+    android:layout_margin="4dp"
     android:clickable="true"
     android:focusable="true"
     android:foreground="?attr/selectableItemBackground"
@@ -14,15 +15,14 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:background="?attr/dashed_border"
-        android:gravity="center"
+        android:orientation="horizontal">
-        android:orientation="vertical"
-        android:padding="4dp">
 
         <ImageView
             android:id="@+id/icon"
-            android:layout_width="14dp"
+            android:layout_width="48dp"
-            android:layout_height="14dp"
+            android:layout_height="48dp"
             android:layout_gravity="center"
+            android:padding="8dp"
             android:scaleType="centerInside"
             android:src="@drawable/ic_add"
             tools:ignore="ContentDescription" />
@@ -31,15 +31,14 @@
             android:id="@+id/title"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginTop="2dp"
+            android:layout_gravity="center_vertical"
             android:ellipsize="end"
-            android:gravity="center"
             android:maxLines="1"
+            android:padding="10dp"
             android:text="@string/feed_create_new_group_button_title"
             android:textAllCaps="true"
             android:textColor="?attr/colorAccent"
-            android:textSize="10sp"
+            android:textSize="14sp"
-            android:textStyle="bold"
+            android:textStyle="bold" />
-            tools:ignore="SmallSp" />
     </LinearLayout>
 </androidx.cardview.widget.CardView>

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

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.cardview.widget.CardView 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="wrap_content"
+    android:layout_gravity="center"
+    android:clickable="true"
+    android:focusable="true"
+    android:foreground="?attr/selectableItemBackground"
+    android:layout_margin="4dp"
+    app:cardBackgroundColor="?attr/card_item_background_color">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical"
+        android:paddingTop="2dp">
+
+        <ImageView
+            android:id="@+id/icon"
+            android:layout_width="36dp"
+            android:layout_height="0dp"
+            android:layout_gravity="center"
+            android:layout_weight="1"
+            android:padding="4dp"
+            android:scaleType="fitCenter"
+            tools:ignore="ContentDescription"
+            tools:src="@drawable/ic_fastfood" />
+
+        <org.schabi.newpipe.views.NewPipeTextView
+            android:id="@+id/title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="?attr/card_item_contrast_color"
+            android:ellipsize="end"
+            android:gravity="center"
+            android:maxLines="2"
+            android:padding="2dp"
+            android:textAllCaps="false"
+            android:textColor="?attr/colorAccent"
+            android:textSize="14sp"
+            android:textStyle="bold"
+            tools:text="ALL" />
+    </LinearLayout>
+</androidx.cardview.widget.CardView>

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

@@ -2,9 +2,10 @@
 <androidx.cardview.widget.CardView 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="64dp"
+    android:layout_width="match_parent"
-    android:layout_height="48dp"
+    android:layout_height="wrap_content"
     android:layout_gravity="center_vertical"
+    android:layout_margin="4dp"
     android:clickable="true"
     android:focusable="true"
     android:foreground="?attr/selectableItemBackground"
@@ -12,36 +13,34 @@
 
     <LinearLayout
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
-        android:orientation="vertical"
+        android:orientation="horizontal">
-        android:paddingTop="2dp">
 
         <ImageView
             android:id="@+id/icon"
-            android:layout_width="18dp"
+            android:layout_width="48dp"
-            android:layout_height="0dp"
+            android:layout_height="48dp"
             android:layout_gravity="center"
-            android:layout_weight="1"
+            android:padding="8dp"
-            android:paddingTop="2dp"
+            android:scaleType="centerInside"
-            android:paddingBottom="2dp"
-            android:scaleType="fitCenter"
             tools:ignore="ContentDescription"
             tools:src="@drawable/ic_fastfood" />
 
         <org.schabi.newpipe.views.NewPipeTextView
             android:id="@+id/title"
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_gravity="center_vertical"
             android:background="?attr/card_item_contrast_color"
             android:ellipsize="end"
-            android:gravity="center"
+            android:gravity="center_vertical"
-            android:maxLines="2"
+            android:maxLines="1"
-            android:padding="2dp"
+            android:padding="10dp"
             android:textAllCaps="false"
             android:textColor="?attr/colorAccent"
-            android:textSize="10sp"
+            android:textSize="14sp"
             android:textStyle="bold"
-            tools:ignore="SmallSp"
+            tools:text="All" />
-            tools:text="ALL" />
     </LinearLayout>
+
 </androidx.cardview.widget.CardView>

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

@@ -3,4 +3,5 @@
     android:id="@+id/recycler_view"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_margin="4dp"
     android:scrollbars="none" />

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

@@ -2,11 +2,7 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content"
+    android:layout_height="wrap_content">
-    android:paddingLeft="16dp"
-    android:paddingTop="12dp"
-    android:paddingRight="16dp"
-    android:paddingBottom="12dp">
 
     <org.schabi.newpipe.views.NewPipeTextView
         android:id="@+id/header_title"
@@ -17,16 +13,29 @@
         android:gravity="start|center_vertical"
         android:maxLines="2"
         android:minHeight="24dp"
+        android:paddingHorizontal="16dp"
+        android:paddingVertical="12dp"
         android:textColor="?android:attr/textColorPrimary"
         android:textSize="16sp"
         android:textStyle="bold"
         tools:text="Header" />
 
     <ImageButton
-        android:id="@+id/header_menu_item"
+        android:id="@+id/header_toggle_view_mode"
-        android:layout_width="24dp"
+        android:layout_width="48dp"
-        android:layout_height="24dp"
+        android:layout_height="48dp"
-        android:layout_marginStart="16dp"
         android:background="?attr/selectableItemBackgroundBorderless"
-        tools:src="@drawable/ic_bookmark" />
+        android:contentDescription="@string/list_view_mode"
+        android:padding="8dp"
+        tools:src="@drawable/ic_apps" />
+
+    <ImageButton
+        android:id="@+id/header_sort"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:layout_marginEnd="4dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:contentDescription="@string/sort"
+        android:padding="8dp"
+        android:src="@drawable/ic_sort" />
 </LinearLayout>

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

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<org.schabi.newpipe.views.NewPipeTextView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:ellipsize="end"
+    android:maxLines="2"
+    android:paddingLeft="16dp"
+    android:paddingTop="12dp"
+    android:paddingRight="16dp"
+    android:paddingBottom="12dp"
+    android:textColor="?android:attr/textColorPrimary"
+    android:textSize="16sp"
+    android:textStyle="bold"
+    tools:text="Header" />

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

@@ -125,7 +125,7 @@
 
     <!-- Feed Groups dimensions-->
     <dimen name="feed_group_carousel_start_end_margin">12dp</dimen>
-    <dimen name="feed_group_carousel_top_bottom_margin">2dp</dimen>
+    <dimen name="feed_group_carousel_top_bottom_margin">6dp</dimen>
     <dimen name="feed_group_carousel_between_items_margin">4dp</dimen>
 
     <dimen name="search_suggestion_text_size">16sp</dimen>

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

@@ -754,4 +754,5 @@
     <string name="unknown_quality">Unknown quality</string>
     <string name="feed_toggle_show_future_items">Show future items</string>
     <string name="feed_toggle_hide_future_items">Hide future items</string>
+    <string name="sort">Sort</string>
 </resources>