Use ConcatAdapter for the navigation drawer.

14 files changed, 1552 insertions, 973 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
index d42ca18d..2e253dfe 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
@@ -83,8 +83,8 @@ import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
 import ml.docilealligator.infinityforreddit.SortType;
 import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.account.AccountViewModel;
-import ml.docilealligator.infinityforreddit.adapters.NavigationDrawerRecyclerViewAdapter;
 import ml.docilealligator.infinityforreddit.adapters.SubredditAutocompleteRecyclerViewAdapter;
+import ml.docilealligator.infinityforreddit.adapters.navigationdrawer.NavigationDrawerRecyclerViewMergedAdapter;
 import ml.docilealligator.infinityforreddit.apis.RedditAPI;
 import ml.docilealligator.infinityforreddit.asynctasks.InsertSubscribedThings;
 import ml.docilealligator.infinityforreddit.asynctasks.SwitchAccount;
@@ -217,7 +217,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
     Executor mExecutor;
     private FragmentManager fragmentManager;
     private SectionsPagerAdapter sectionsPagerAdapter;
-    private NavigationDrawerRecyclerViewAdapter adapter;
+    private NavigationDrawerRecyclerViewMergedAdapter adapter;
     private Call<String> subredditAutocompleteCall;
     private String mAccessToken;
     private String mAccountName;
@@ -297,9 +297,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
             @Override
             public void onDrawerClosed(View drawerView) {
                 if (adapter != null) {
-                    if (adapter.closeAccountSectionWithoutChangeIconResource(true)) {
-                        adapter.notifyItemChanged(0);
-                    }
+                    adapter.closeAccountSectionWithoutChangeIconResource(true);
                 }
             }
         });
@@ -726,9 +724,9 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
         });
         fab.setVisibility(View.VISIBLE);
 
-        adapter = new NavigationDrawerRecyclerViewAdapter(this, mSharedPreferences,
+        adapter = new NavigationDrawerRecyclerViewMergedAdapter(this, mSharedPreferences,
                 mNsfwAndSpoilerSharedPreferences, mNavigationDrawerSharedPreferences, mCustomThemeWrapper, mAccountName,
-                new NavigationDrawerRecyclerViewAdapter.ItemClickListener() {
+                new NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener() {
                     @Override
                     public void onMenuClick(int stringId) {
                         Intent intent = null;
@@ -830,7 +828,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                 });
         adapter.setInboxCount(inboxCount);
         navDrawerRecyclerView.setLayoutManager(new LinearLayoutManagerBugFixed(this));
-        navDrawerRecyclerView.setAdapter(adapter);
+        navDrawerRecyclerView.setAdapter(adapter.getConcatAdapter());
 
         int tabCount = mMainActivityTabsSharedPreferences.getInt((mAccountName == null ? "" : mAccountName) + SharedPreferencesUtils.MAIN_PAGE_TAB_COUNT, 3);
         mShowFavoriteMultiReddits = mMainActivityTabsSharedPreferences.getBoolean((mAccountName == null ? "" : mAccountName) + SharedPreferencesUtils.MAIN_PAGE_SHOW_FAVORITE_MULTIREDDITS, false);
@@ -1241,7 +1239,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
             RecyclerView.LayoutManager layoutManager = navDrawerRecyclerView.getLayoutManager();
             navDrawerRecyclerView.setAdapter(null);
             navDrawerRecyclerView.setLayoutManager(null);
-            navDrawerRecyclerView.setAdapter(adapter);
+            navDrawerRecyclerView.setAdapter(adapter.getConcatAdapter());
             navDrawerRecyclerView.setLayoutManager(layoutManager);
 
             if (previousPosition > 0) {
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/NavigationDrawerRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/NavigationDrawerRecyclerViewAdapter.java
deleted file mode 100644
index d5e0f502..00000000
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/NavigationDrawerRecyclerViewAdapter.java
+++ /dev/null
@@ -1,963 +0,0 @@
-package ml.docilealligator.infinityforreddit.adapters;
-
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.content.res.Configuration;
-import android.content.res.Resources;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ImageView;
-import android.widget.RelativeLayout;
-import android.widget.TextView;
-
-import androidx.annotation.NonNull;
-import androidx.biometric.BiometricManager;
-import androidx.biometric.BiometricPrompt;
-import androidx.core.content.ContextCompat;
-import androidx.core.content.res.ResourcesCompat;
-import androidx.recyclerview.widget.RecyclerView;
-
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.RequestManager;
-import com.bumptech.glide.request.RequestOptions;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.concurrent.Executor;
-
-import butterknife.BindView;
-import butterknife.ButterKnife;
-import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
-import ml.docilealligator.infinityforreddit.R;
-import ml.docilealligator.infinityforreddit.account.Account;
-import ml.docilealligator.infinityforreddit.activities.BaseActivity;
-import ml.docilealligator.infinityforreddit.activities.InboxActivity;
-import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
-import ml.docilealligator.infinityforreddit.subscribedsubreddit.SubscribedSubredditData;
-import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
-import pl.droidsonroids.gif.GifImageView;
-
-import static androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG;
-import static androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL;
-
-public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
-
-    public interface ItemClickListener {
-        void onMenuClick(int stringId);
-        void onSubscribedSubredditClick(String subredditName);
-        void onAccountClick(String accountName);
-    }
-
-    private static final int VIEW_TYPE_NAV_HEADER = 0;
-    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
-    private static final int VIEW_TYPE_MENU_ITEM = 2;
-    private static final int VIEW_TYPE_DIVIDER = 3;
-    private static final int VIEW_TYPE_FAVORITE_SUBSCRIBED_SUBREDDIT = 4;
-    private static final int VIEW_TYPE_SUBSCRIBED_SUBREDDIT = 5;
-    private static final int VIEW_TYPE_ACCOUNT = 6;
-    private static final int CURRENT_MENU_ITEMS = 20;
-    private static final int ACCOUNT_SECTION_ITEMS = 4;
-    private static final int REDDIT_SECTION_ITEMS = 2;
-    private static final int POST_SECTION_ITEMS = 5;
-    private static final int PREFERENCES_SECTION_ITEMS = 3;
-
-    private BaseActivity baseActivity;
-    private Resources resources;
-    private RequestManager glide;
-    private String accountName;
-    private String profileImageUrl;
-    private String bannerImageUrl;
-    private int karma;
-    private int inboxCount;
-    private boolean isNSFWEnabled;
-    private boolean requireAuthToAccountSection;
-    private boolean showAvatarOnTheRightInTheNavigationDrawer;
-    private ItemClickListener itemClickListener;
-    private boolean isLoggedIn;
-    private boolean isInMainPage = true;
-    private boolean collapseAccountSection;
-    private boolean collapseRedditSection;
-    private boolean collapsePostSection;
-    private boolean collapsePreferencesSection;
-    private boolean collapseFavoriteSubredditsSection;
-    private boolean collapseSubscribedSubredditsSection;
-    private boolean hideFavoriteSubredditsSection;
-    private boolean hideSubscribedSubredditsSection;
-    private ArrayList<SubscribedSubredditData> favoriteSubscribedSubreddits;
-    private ArrayList<SubscribedSubredditData> subscribedSubreddits;
-    private ArrayList<Account> accounts;
-    private int primaryTextColor;
-    private int secondaryTextColor;
-    private int dividerColor;
-    private int primaryIconColor;
-
-    public NavigationDrawerRecyclerViewAdapter(BaseActivity baseActivity, SharedPreferences sharedPreferences,
-                                               SharedPreferences nsfwAndSpoilerSharedPreferences,
-                                               SharedPreferences navigationDrawerSharedPreferences,
-                                               CustomThemeWrapper customThemeWrapper,
-                                               String accountName,
-                                               ItemClickListener itemClickListener) {
-        this.baseActivity = baseActivity;
-        resources = baseActivity.getResources();
-        glide = Glide.with(baseActivity);
-        this.accountName = accountName;
-        isNSFWEnabled = nsfwAndSpoilerSharedPreferences.getBoolean((accountName == null ? "" : accountName) + SharedPreferencesUtils.NSFW_BASE, false);
-        requireAuthToAccountSection = sharedPreferences.getBoolean(SharedPreferencesUtils.REQUIRE_AUTHENTICATION_TO_GO_TO_ACCOUNT_SECTION_IN_NAVIGATION_DRAWER, false);
-        showAvatarOnTheRightInTheNavigationDrawer = sharedPreferences.getBoolean(SharedPreferencesUtils.SHOW_AVATAR_ON_THE_RIGHT, false);
-        isLoggedIn = accountName != null;
-        collapseAccountSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_ACCOUNT_SECTION, false);
-        collapseRedditSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_REDDIT_SECTION, false);
-        collapsePostSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_POST_SECTION, false);
-        collapsePreferencesSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_PREFERENCES_SECTION, false);
-        collapseFavoriteSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_FAVORITE_SUBREDDITS_SECTION, false);
-        collapseSubscribedSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_SUBSCRIBED_SUBREDDITS_SECTION, false);
-        hideFavoriteSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.HIDE_FAVORITE_SUBREDDITS_SECTION, false);
-        hideSubscribedSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.HIDE_SUBSCRIBED_SUBREDDITS_SECTIONS, false);
-        showAvatarOnTheRightInTheNavigationDrawer = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.SHOW_AVATAR_ON_THE_RIGHT, false);
-
-        this.itemClickListener = itemClickListener;
-        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
-        secondaryTextColor = customThemeWrapper.getSecondaryTextColor();
-        dividerColor = customThemeWrapper.getDividerColor();
-        primaryIconColor = customThemeWrapper.getPrimaryIconColor();
-        favoriteSubscribedSubreddits = new ArrayList<>();
-        subscribedSubreddits = new ArrayList<>();
-    }
-
-    @Override
-    public int getItemViewType(int position) {
-        if (isInMainPage) {
-            if (isLoggedIn) {
-                if (position == CURRENT_MENU_ITEMS - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                        - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)) {
-                    return VIEW_TYPE_MENU_GROUP_TITLE;
-                } else if (!hideFavoriteSubredditsSection && !favoriteSubscribedSubreddits.isEmpty() && position == CURRENT_MENU_ITEMS
-                        - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                        - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)
-                        + (collapseFavoriteSubredditsSection ? 0 : favoriteSubscribedSubreddits.size()) + 1) {
-                    return VIEW_TYPE_MENU_GROUP_TITLE;
-                } else if (position > CURRENT_MENU_ITEMS - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                        - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)) {
-                    if (!favoriteSubscribedSubreddits.isEmpty() && !hideFavoriteSubredditsSection &&
-                            !collapseFavoriteSubredditsSection && position <= CURRENT_MENU_ITEMS
-                            - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                            - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                            - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                            - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)
-                            + favoriteSubscribedSubreddits.size()) {
-                        return VIEW_TYPE_FAVORITE_SUBSCRIBED_SUBREDDIT;
-                    } else {
-                        return VIEW_TYPE_SUBSCRIBED_SUBREDDIT;
-                    }
-                } else if (position == 0) {
-                    return VIEW_TYPE_NAV_HEADER;
-                } else if (position == 1
-                        || position == (ACCOUNT_SECTION_ITEMS + 2) - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        || position == (ACCOUNT_SECTION_ITEMS + REDDIT_SECTION_ITEMS + 3)
-                        - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        || position == (ACCOUNT_SECTION_ITEMS + REDDIT_SECTION_ITEMS + POST_SECTION_ITEMS + 4)
-                        - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        - (collapsePostSection ? POST_SECTION_ITEMS : 0)) {
-                    return VIEW_TYPE_MENU_GROUP_TITLE;
-                } else if (position == (CURRENT_MENU_ITEMS - 1) - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                        - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)) {
-                    return VIEW_TYPE_DIVIDER;
-                } else {
-                    return VIEW_TYPE_MENU_ITEM;
-                }
-            } else {
-                if (position == 0) {
-                    return VIEW_TYPE_NAV_HEADER;
-                } else {
-                    return VIEW_TYPE_MENU_ITEM;
-                }
-            }
-        } else {
-            if (position == 0) {
-                return VIEW_TYPE_NAV_HEADER;
-            }
-            if (accounts != null) {
-                if (position > accounts.size()) {
-                    return VIEW_TYPE_MENU_ITEM;
-                } else {
-                    return VIEW_TYPE_ACCOUNT;
-                }
-            } else {
-                return VIEW_TYPE_MENU_ITEM;
-            }
-        }
-    }
-
-    @NonNull
-    @Override
-    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        switch (viewType) {
-            case VIEW_TYPE_NAV_HEADER:
-                return new NavHeaderViewHolder(LayoutInflater.from(parent.getContext())
-                        .inflate(R.layout.nav_header_main, parent, false));
-            case VIEW_TYPE_MENU_GROUP_TITLE:
-                return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
-                        .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
-            case VIEW_TYPE_MENU_ITEM:
-                return new MenuItemViewHolder(LayoutInflater.from(parent.getContext())
-                        .inflate(R.layout.item_nav_drawer_menu_item, parent, false));
-            case VIEW_TYPE_DIVIDER:
-                return new DividerViewHolder(LayoutInflater.from(parent.getContext())
-                        .inflate(R.layout.item_nav_drawer_divider, parent, false));
-            case VIEW_TYPE_ACCOUNT:
-                return new AccountViewHolder(LayoutInflater.from(parent.getContext())
-                        .inflate(R.layout.item_nav_drawer_account, parent, false));
-            case VIEW_TYPE_FAVORITE_SUBSCRIBED_SUBREDDIT:
-                return new FavoriteSubscribedThingViewHolder(LayoutInflater.from(parent.getContext())
-                        .inflate(R.layout.item_nav_drawer_subscribed_thing, parent, false));
-            default:
-                return new SubscribedThingViewHolder(LayoutInflater.from(parent.getContext())
-                        .inflate(R.layout.item_nav_drawer_subscribed_thing, parent, false));
-        }
-    }
-
-    @Override
-    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
-        if (holder instanceof NavHeaderViewHolder) {
-            RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) ((NavHeaderViewHolder) holder).profileImageView.getLayoutParams();
-            if (showAvatarOnTheRightInTheNavigationDrawer) {
-                params.addRule(RelativeLayout.ALIGN_PARENT_END);
-            } else {
-                params.removeRule(RelativeLayout.ALIGN_PARENT_END);
-            }
-            ((NavHeaderViewHolder) holder).profileImageView.setLayoutParams(params);
-            if (isLoggedIn) {
-                ((NavHeaderViewHolder) holder).karmaTextView.setText(baseActivity.getString(R.string.karma_info, karma));
-                ((NavHeaderViewHolder) holder).accountNameTextView.setText(accountName);
-                if (profileImageUrl != null && !profileImageUrl.equals("")) {
-                    glide.load(profileImageUrl)
-                            .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
-                            .error(glide.load(R.drawable.subreddit_default_icon)
-                                    .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0))))
-                            .into(((NavHeaderViewHolder) holder).profileImageView);
-                } else {
-                    glide.load(R.drawable.subreddit_default_icon)
-                            .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
-                            .into(((NavHeaderViewHolder) holder).profileImageView);
-                }
-
-                if (bannerImageUrl != null && !bannerImageUrl.equals("")) {
-                    glide.load(bannerImageUrl).into(((NavHeaderViewHolder) holder).bannerImageView);
-                }
-            } else {
-                ((NavHeaderViewHolder) holder).karmaTextView.setText(R.string.press_here_to_login);
-                ((NavHeaderViewHolder) holder).accountNameTextView.setText(R.string.anonymous_account);
-                glide.load(R.drawable.subreddit_default_icon)
-                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
-                        .into(((NavHeaderViewHolder) holder).profileImageView);
-            }
-
-            if (isInMainPage) {
-                ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_down_24px));
-            } else {
-                ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_up_24px));
-            }
-
-            holder.itemView.setOnClickListener(view -> {
-                if (isInMainPage) {
-                    if (requireAuthToAccountSection) {
-                        BiometricManager biometricManager = BiometricManager.from(baseActivity);
-                        if (biometricManager.canAuthenticate(BIOMETRIC_STRONG | DEVICE_CREDENTIAL) == BiometricManager.BIOMETRIC_SUCCESS) {
-                            Executor executor = ContextCompat.getMainExecutor(baseActivity);
-                            BiometricPrompt biometricPrompt = new BiometricPrompt(baseActivity,
-                                    executor, new BiometricPrompt.AuthenticationCallback() {
-                                @Override
-                                public void onAuthenticationSucceeded(
-                                        @NonNull BiometricPrompt.AuthenticationResult result) {
-                                    super.onAuthenticationSucceeded(result);
-                                    openAccountSection(((NavHeaderViewHolder) holder).dropIconImageView);
-                                }
-                            });
-
-                            BiometricPrompt.PromptInfo promptInfo = new BiometricPrompt.PromptInfo.Builder()
-                                    .setTitle(baseActivity.getString(R.string.unlock_account_section))
-                                    .setAllowedAuthenticators(BIOMETRIC_STRONG | DEVICE_CREDENTIAL)
-                                    .build();
-
-                            biometricPrompt.authenticate(promptInfo);
-                        } else {
-                            openAccountSection(((NavHeaderViewHolder) holder).dropIconImageView);
-                        }
-                    } else {
-                        openAccountSection(((NavHeaderViewHolder) holder).dropIconImageView);
-                    }
-                } else {
-                    ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.ic_baseline_arrow_drop_down_24px, null));
-                    closeAccountSectionWithoutChangeIconResource(false);
-                }
-            });
-        } else if (holder instanceof MenuGroupTitleViewHolder) {
-            int type;
-            if (position == 1) {
-                ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_account);
-                if (collapseAccountSection) {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24px);
-                } else {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24px);
-                }
-                type = 0;
-            } else if (position == (ACCOUNT_SECTION_ITEMS + 2) - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)) {
-                ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_reddit);
-                if (collapseRedditSection) {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24px);
-                } else {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24px);
-                }
-                type = 1;
-            } else if (position == (ACCOUNT_SECTION_ITEMS + REDDIT_SECTION_ITEMS + 3)
-                    - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                    - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)) {
-                ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_post);
-                if (collapsePostSection) {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24px);
-                } else {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24px);
-                }
-                type = 2;
-            } else if (position == (ACCOUNT_SECTION_ITEMS + REDDIT_SECTION_ITEMS + POST_SECTION_ITEMS + 4)
-                    - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                    - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                    - (collapsePostSection ? POST_SECTION_ITEMS : 0)) {
-                ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_preferences);
-                if (collapsePreferencesSection) {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24px);
-                } else {
-                    ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24px);
-                }
-                type = 3;
-            } else {
-                if (!hideFavoriteSubredditsSection && !favoriteSubscribedSubreddits.isEmpty() && position == CURRENT_MENU_ITEMS
-                        - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                        - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)) {
-                    ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.favorites);
-                    if (collapseFavoriteSubredditsSection) {
-                        ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24px);
-                    } else {
-                        ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24px);
-                    }
-                    type = 4;
-                } else {
-                    ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.subscriptions);
-                    if (collapseSubscribedSubredditsSection) {
-                        ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24px);
-                    } else {
-                        ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24px);
-                    }
-                    type = 5;
-                }
-            }
-
-            holder.itemView.setOnClickListener(view -> {
-                switch (type) {
-                    case 0:
-                        if (collapseAccountSection) {
-                            collapseAccountSection = !collapseAccountSection;
-                            notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, ACCOUNT_SECTION_ITEMS);
-                        } else {
-                            collapseAccountSection = !collapseAccountSection;
-                            notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, ACCOUNT_SECTION_ITEMS);
-                        }
-                        break;
-                    case 1:
-                        if (collapseRedditSection) {
-                            collapseRedditSection = !collapseRedditSection;
-                            notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, REDDIT_SECTION_ITEMS);
-                        } else {
-                            collapseRedditSection = !collapseRedditSection;
-                            notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, REDDIT_SECTION_ITEMS);
-                        }
-                        break;
-                    case 2:
-                        if (collapsePostSection) {
-                            collapsePostSection = !collapsePostSection;
-                            notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, POST_SECTION_ITEMS);
-                        } else {
-                            collapsePostSection = !collapsePostSection;
-                            notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, POST_SECTION_ITEMS);
-                        }
-                        break;
-                    case 3:
-                        if (collapsePreferencesSection) {
-                            collapsePreferencesSection = !collapsePreferencesSection;
-                            notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, PREFERENCES_SECTION_ITEMS);
-                        } else {
-                            collapsePreferencesSection = !collapsePreferencesSection;
-                            notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, PREFERENCES_SECTION_ITEMS);
-                        }
-                        break;
-                    case 4:
-                        if (collapseFavoriteSubredditsSection) {
-                            collapseFavoriteSubredditsSection = !collapseFavoriteSubredditsSection;
-                            notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, favoriteSubscribedSubreddits.size());
-                        } else {
-                            collapseFavoriteSubredditsSection = !collapseFavoriteSubredditsSection;
-                            notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, favoriteSubscribedSubreddits.size());
-                        }
-                        break;
-                    case 5:
-                        if (collapseSubscribedSubredditsSection) {
-                            collapseSubscribedSubredditsSection = !collapseSubscribedSubredditsSection;
-                            notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, subscribedSubreddits.size());
-                        } else {
-                            collapseSubscribedSubredditsSection = !collapseSubscribedSubredditsSection;
-                            notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, subscribedSubreddits.size());
-                        }
-                        break;
-                }
-                notifyItemChanged(holder.getBindingAdapterPosition());
-            });
-        } else if (holder instanceof MenuItemViewHolder) {
-            int stringId = 0;
-            int drawableId = 0;
-            boolean setOnClickListener = true;
-
-            if (isInMainPage) {
-                if (isLoggedIn) {
-                    int pseudoPosition = position;
-                    if (collapseAccountSection && collapseRedditSection && collapsePostSection) {
-                        pseudoPosition += ACCOUNT_SECTION_ITEMS + REDDIT_SECTION_ITEMS + POST_SECTION_ITEMS;
-                    } else if (collapseAccountSection && collapseRedditSection) {
-                        pseudoPosition += ACCOUNT_SECTION_ITEMS + REDDIT_SECTION_ITEMS;
-                    } else if (collapseAccountSection && collapsePostSection) {
-                        if (position > REDDIT_SECTION_ITEMS + 2) {
-                            pseudoPosition += ACCOUNT_SECTION_ITEMS + POST_SECTION_ITEMS;
-                        } else {
-                            pseudoPosition += ACCOUNT_SECTION_ITEMS;
-                        }
-                    } else if (collapseRedditSection && collapsePostSection) {
-                        if (position > ACCOUNT_SECTION_ITEMS + 1) {
-                            pseudoPosition += REDDIT_SECTION_ITEMS + POST_SECTION_ITEMS;
-                        }
-                    } else if (collapseAccountSection) {
-                        pseudoPosition += ACCOUNT_SECTION_ITEMS;
-                    } else if (collapseRedditSection) {
-                        if (position > ACCOUNT_SECTION_ITEMS + 1) {
-                            pseudoPosition += REDDIT_SECTION_ITEMS;
-                        }
-                    } else if (collapsePostSection) {
-                        if (position > ACCOUNT_SECTION_ITEMS + REDDIT_SECTION_ITEMS + 2) {
-                            pseudoPosition += POST_SECTION_ITEMS;
-                        }
-                    }
-                    switch (pseudoPosition) {
-                        case 2:
-                            stringId = R.string.profile;
-                            drawableId = R.drawable.ic_account_circle_24dp;
-                            break;
-                        case 3:
-                            stringId = R.string.subscriptions;
-                            drawableId = R.drawable.ic_subscritptions_bottom_app_bar_24dp;
-                            break;
-                        case 4:
-                            stringId = R.string.multi_reddit;
-                            drawableId = R.drawable.ic_multi_reddit_24dp;
-                            break;
-                        case 5:
-                            setOnClickListener = false;
-                            if (inboxCount > 0) {
-                                ((MenuItemViewHolder) holder).menuTextView.setText(baseActivity.getString(R.string.inbox_with_count, inboxCount));
-                            } else {
-                                ((MenuItemViewHolder) holder).menuTextView.setText(R.string.inbox);
-                            }
-                            ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_inbox_24dp));
-                            holder.itemView.setOnClickListener(view -> {
-                                Intent intent = new Intent(baseActivity, InboxActivity.class);
-                                baseActivity.startActivity(intent);
-                            });
-                            break;
-                        case 7:
-                            stringId = R.string.rpan;
-                            drawableId = R.drawable.ic_rpan_24dp;
-                            break;
-                        case 8:
-                            stringId = R.string.trending;
-                            drawableId = R.drawable.ic_trending_24dp;
-                            break;
-                        case 10:
-                            stringId = R.string.upvoted;
-                            drawableId = R.drawable.ic_arrow_upward_black_24dp;
-                            break;
-                        case 11:
-                            stringId = R.string.downvoted;
-                            drawableId = R.drawable.ic_arrow_downward_black_24dp;
-                            break;
-                        case 12:
-                            stringId = R.string.hidden;
-                            drawableId = R.drawable.ic_outline_lock_24dp;
-                            break;
-                        case 13:
-                            stringId = R.string.account_saved_thing_activity_label;
-                            drawableId = R.drawable.ic_outline_bookmarks_24dp;
-                            break;
-                        case 14:
-                            stringId = R.string.gilded;
-                            drawableId = R.drawable.ic_star_border_24dp;
-                            break;
-                        case 16:
-                            if ((resources.getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK) != Configuration.UI_MODE_NIGHT_YES) {
-                                stringId = R.string.dark_theme;
-                                drawableId = R.drawable.ic_dark_theme_24dp;
-                            } else {
-                                stringId = R.string.light_theme;
-                                drawableId = R.drawable.ic_light_theme_24dp;
-                            }
-                            break;
-                        case 17:
-                            setOnClickListener = false;
-                            if (isNSFWEnabled) {
-                                stringId = R.string.disable_nsfw;
-                                drawableId = R.drawable.ic_nsfw_off_24dp;
-                            } else {
-                                stringId = R.string.enable_nsfw;
-                                drawableId = R.drawable.ic_nsfw_on_24dp;
-                            }
-
-                            holder.itemView.setOnClickListener(view -> {
-                                if (isNSFWEnabled) {
-                                    isNSFWEnabled = false;
-                                    ((MenuItemViewHolder) holder).menuTextView.setText(R.string.enable_nsfw);
-                                    ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_nsfw_on_24dp));
-                                    itemClickListener.onMenuClick(R.string.disable_nsfw);
-                                } else {
-                                    isNSFWEnabled = true;
-                                    ((MenuItemViewHolder) holder).menuTextView.setText(R.string.disable_nsfw);
-                                    ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_nsfw_off_24dp));
-                                    itemClickListener.onMenuClick(R.string.enable_nsfw);
-                                }
-                            });
-                            break;
-                        case 18:
-                            stringId = R.string.settings;
-                            drawableId = R.drawable.ic_settings_24dp;
-                    }
-                } else {
-                    switch (position) {
-                        case 1:
-                            stringId = R.string.subscriptions;
-                            drawableId = R.drawable.ic_subscritptions_bottom_app_bar_24dp;
-                            break;
-                        case 2:
-                            stringId = R.string.rpan;
-                            drawableId = R.drawable.ic_rpan_24dp;
-                            break;
-                        case 3:
-                            stringId = R.string.trending;
-                            drawableId = R.drawable.ic_trending_24dp;
-                            break;
-                        case 4:
-                            if ((resources.getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK) != Configuration.UI_MODE_NIGHT_YES) {
-                                stringId = R.string.dark_theme;
-                                drawableId = R.drawable.ic_dark_theme_24dp;
-                            } else {
-                                stringId = R.string.light_theme;
-                                drawableId = R.drawable.ic_light_theme_24dp;
-                            }
-                            break;
-                        case 5:
-                            setOnClickListener = false;
-                            if (isNSFWEnabled) {
-                                stringId = R.string.disable_nsfw;
-                                drawableId = R.drawable.ic_nsfw_off_24dp;
-                            } else {
-                                stringId = R.string.enable_nsfw;
-                                drawableId = R.drawable.ic_nsfw_on_24dp;
-                            }
-
-                            holder.itemView.setOnClickListener(view -> {
-                                if (isNSFWEnabled) {
-                                    isNSFWEnabled = false;
-                                    ((MenuItemViewHolder) holder).menuTextView.setText(R.string.enable_nsfw);
-                                    ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_nsfw_on_24dp));
-                                    itemClickListener.onMenuClick(R.string.disable_nsfw);
-                                } else {
-                                    isNSFWEnabled = true;
-                                    ((MenuItemViewHolder) holder).menuTextView.setText(R.string.disable_nsfw);
-                                    ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_nsfw_off_24dp));
-                                    itemClickListener.onMenuClick(R.string.enable_nsfw);
-                                }
-                            });
-                            break;
-                        case 6:
-                            stringId = R.string.settings;
-                            drawableId = R.drawable.ic_settings_24dp;
-                    }
-                }
-            } else {
-                if (isLoggedIn) {
-                    int offset = accounts == null ? 0 : accounts.size();
-                    if (position == offset + 1) {
-                        stringId = R.string.add_account;
-                        drawableId = R.drawable.ic_outline_add_circle_outline_24dp;
-                    } else if (position == offset + 2) {
-                        stringId = R.string.anonymous_account;
-                        drawableId = R.drawable.ic_anonymous_24dp;
-                    } else if (position == offset + 3) {
-                        stringId = R.string.log_out;
-                        drawableId = R.drawable.ic_log_out_24dp;
-                    }
-                } else {
-                    stringId = R.string.add_account;
-                    drawableId = R.drawable.ic_outline_add_circle_outline_24dp;
-                }
-            }
-
-            if (stringId != 0) {
-                ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
-                ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, drawableId));
-                if (setOnClickListener) {
-                    int finalStringId = stringId;
-                    holder.itemView.setOnClickListener(view -> itemClickListener.onMenuClick(finalStringId));
-                }
-            }
-        } else if (holder instanceof FavoriteSubscribedThingViewHolder) {
-            SubscribedSubredditData subreddit = favoriteSubscribedSubreddits.get(position - (CURRENT_MENU_ITEMS
-                    - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                    - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                    - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                    - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0))
-                    - 1);
-            String subredditName = subreddit.getName();
-            String iconUrl = subreddit.getIconUrl();
-            ((FavoriteSubscribedThingViewHolder) holder).subredditNameTextView.setText(subredditName);
-            if (iconUrl != null && !iconUrl.equals("")) {
-                glide.load(iconUrl)
-                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
-                        .error(glide.load(R.drawable.subreddit_default_icon)
-                                .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0))))
-                        .into(((FavoriteSubscribedThingViewHolder) holder).iconGifImageView);
-            } else {
-                glide.load(R.drawable.subreddit_default_icon)
-                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
-                        .into(((FavoriteSubscribedThingViewHolder) holder).iconGifImageView);
-            }
-
-            holder.itemView.setOnClickListener(view -> {
-                itemClickListener.onSubscribedSubredditClick(subredditName);
-            });
-        } else if (holder instanceof SubscribedThingViewHolder) {
-            SubscribedSubredditData subreddit = favoriteSubscribedSubreddits.isEmpty() || hideFavoriteSubredditsSection ? subscribedSubreddits.get(position - (CURRENT_MENU_ITEMS
-                    - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                    - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                    - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                    - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0))
-                    - 1)
-                    : subscribedSubreddits.get(position - (CURRENT_MENU_ITEMS
-                    - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                    - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                    - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                    - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0))
-                    - (collapseFavoriteSubredditsSection ? 0 : favoriteSubscribedSubreddits.size())
-                    - 2);
-            String subredditName = subreddit.getName();
-            String iconUrl = subreddit.getIconUrl();
-            ((SubscribedThingViewHolder) holder).subredditNameTextView.setText(subredditName);
-            if (iconUrl != null && !iconUrl.equals("")) {
-                glide.load(iconUrl)
-                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
-                        .error(glide.load(R.drawable.subreddit_default_icon)
-                                .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0))))
-                        .into(((SubscribedThingViewHolder) holder).iconGifImageView);
-            } else {
-                glide.load(R.drawable.subreddit_default_icon)
-                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
-                        .into(((SubscribedThingViewHolder) holder).iconGifImageView);
-            }
-
-            holder.itemView.setOnClickListener(view -> {
-                itemClickListener.onSubscribedSubredditClick(subredditName);
-            });
-        } else if (holder instanceof AccountViewHolder) {
-            glide.load(accounts.get(position - 1).getProfileImageUrl())
-                    .error(glide.load(R.drawable.subreddit_default_icon))
-                    .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(128, 0)))
-                    .into(((AccountViewHolder) holder).profileImageGifImageView);
-            ((AccountViewHolder) holder).usernameTextView.setText(accounts.get(position - 1).getAccountName());
-            holder.itemView.setOnClickListener(view ->
-                    itemClickListener.onAccountClick(accounts.get(position - 1).getAccountName()));
-        }
-    }
-
-    public boolean closeAccountSectionWithoutChangeIconResource(boolean checkIsInMainPage) {
-        if (!(checkIsInMainPage && isInMainPage)) {
-            notifyItemRangeRemoved(1, getItemCount() - 1);
-            if (isLoggedIn) {
-                notifyItemRangeInserted(1, (favoriteSubscribedSubreddits.isEmpty() ? 0 : favoriteSubscribedSubreddits.size() + 1)
-                        + (subscribedSubreddits.isEmpty() ? 0 : subscribedSubreddits.size() + 1) + CURRENT_MENU_ITEMS - 1);
-            } else {
-                notifyItemRangeInserted(1, 2);
-            }
-            isInMainPage = true;
-
-            return true;
-        }
-
-        return false;
-    }
-
-    private void openAccountSection(ImageView dropIconImageView) {
-        dropIconImageView.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.ic_baseline_arrow_drop_up_24px, null));
-        notifyItemRangeRemoved(1, getItemCount() - 1);
-        if (accounts != null) {
-            notifyItemRangeInserted(1, accounts.size() + 3);
-        } else {
-            if (isLoggedIn) {
-                notifyItemRangeInserted(1, 3);
-            } else {
-                notifyItemInserted(1);
-            }
-        }
-        isInMainPage = false;
-    }
-
-    @Override
-    public int getItemCount() {
-        if (isInMainPage) {
-            if (isLoggedIn) {
-                if (!(favoriteSubscribedSubreddits.isEmpty() && subscribedSubreddits.isEmpty())) {
-                    if (hideFavoriteSubredditsSection && hideSubscribedSubredditsSection) {
-                        return CURRENT_MENU_ITEMS
-                                - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                                - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                                - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                                - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0);
-                    } else if (hideFavoriteSubredditsSection) {
-                        return CURRENT_MENU_ITEMS
-                                + (subscribedSubreddits.isEmpty() ? 0 : subscribedSubreddits.size() + 1)
-                                - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                                - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                                - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                                - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)
-                                - (collapseSubscribedSubredditsSection ? subscribedSubreddits.size() : 0);
-                    } else if (hideSubscribedSubredditsSection) {
-                        return CURRENT_MENU_ITEMS + (favoriteSubscribedSubreddits.isEmpty() ? 0 : favoriteSubscribedSubreddits.size() + 1)
-                                - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                                - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                                - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                                - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)
-                                - (collapseFavoriteSubredditsSection ? favoriteSubscribedSubreddits.size() : 0);
-                    }
-                    return CURRENT_MENU_ITEMS + (favoriteSubscribedSubreddits.isEmpty() ? 0 : favoriteSubscribedSubreddits.size() + 1)
-                            + (subscribedSubreddits.isEmpty() ? 0 : subscribedSubreddits.size() + 1)
-                            - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                            - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                            - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                            - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0)
-                            - (collapseFavoriteSubredditsSection ? favoriteSubscribedSubreddits.size() : 0)
-                            - (collapseSubscribedSubredditsSection ? subscribedSubreddits.size() : 0);
-                }
-                return CURRENT_MENU_ITEMS - 1
-                        - (collapseAccountSection ? ACCOUNT_SECTION_ITEMS : 0)
-                        - (collapseRedditSection ? REDDIT_SECTION_ITEMS : 0)
-                        - (collapsePostSection ? POST_SECTION_ITEMS : 0)
-                        - (collapsePreferencesSection ? PREFERENCES_SECTION_ITEMS : 0);
-            } else {
-                return 7;
-            }
-        } else {
-            if (isLoggedIn) {
-                if (accounts != null && !accounts.isEmpty()) {
-                    return 4 + accounts.size();
-                } else {
-                    return 4;
-                }
-            } else {
-                if (accounts != null && !accounts.isEmpty()) {
-                    return 2 + accounts.size();
-                } else {
-                    return 2;
-                }
-            }
-        }
-    }
-
-    @Override
-    public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
-        super.onViewRecycled(holder);
-        if (holder instanceof SubscribedThingViewHolder) {
-            glide.clear(((SubscribedThingViewHolder) holder).iconGifImageView);
-        }
-    }
-
-    public void setFavoriteSubscribedSubreddits(List<SubscribedSubredditData> favoriteSubscribedSubreddits) {
-        this.favoriteSubscribedSubreddits = (ArrayList<SubscribedSubredditData>) favoriteSubscribedSubreddits;
-        if (isInMainPage) {
-            notifyDataSetChanged();
-        }
-    }
-
-    public void setSubscribedSubreddits(List<SubscribedSubredditData> subscribedSubreddits) {
-        this.subscribedSubreddits = (ArrayList<SubscribedSubredditData>) subscribedSubreddits;
-        if (isInMainPage) {
-            notifyDataSetChanged();
-        }
-    }
-
-    public void changeAccountsDataset(List<Account> accounts) {
-        this.accounts = (ArrayList<Account>) accounts;
-        if (!isInMainPage) {
-            notifyDataSetChanged();
-        }
-    }
-
-    public void updateAccountInfo(String profileImageUrl, String bannerImageUrl, int karma) {
-        this.profileImageUrl = profileImageUrl;
-        this.bannerImageUrl = bannerImageUrl;
-        this.karma = karma;
-        notifyItemChanged(0);
-    }
-
-    public void setNSFWEnabled(boolean isNSFWEnabled) {
-        this.isNSFWEnabled = isNSFWEnabled;
-        if (isInMainPage) {
-            if (isLoggedIn) {
-                notifyItemChanged(CURRENT_MENU_ITEMS - 3);
-            } else {
-                notifyItemChanged(3);
-            }
-        }
-    }
-
-    public void setRequireAuthToAccountSection(boolean requireAuthToAccountSection) {
-        this.requireAuthToAccountSection = requireAuthToAccountSection;
-    }
-
-    public void setShowAvatarOnTheRightInTheNavigationDrawer(boolean showAvatarOnTheRightInTheNavigationDrawer) {
-        this.showAvatarOnTheRightInTheNavigationDrawer = showAvatarOnTheRightInTheNavigationDrawer;
-    }
-
-    public void setInboxCount(int inboxCount) {
-        this.inboxCount = inboxCount;
-        notifyDataSetChanged();
-    }
-
-    class NavHeaderViewHolder extends RecyclerView.ViewHolder {
-        @BindView(R.id.name_text_view_nav_header_main)
-        TextView accountNameTextView;
-        @BindView(R.id.karma_text_view_nav_header_main)
-        TextView karmaTextView;
-        @BindView(R.id.profile_image_view_nav_header_main)
-        GifImageView profileImageView;
-        @BindView(R.id.banner_image_view_nav_header_main)
-        ImageView bannerImageView;
-        @BindView(R.id.account_switcher_image_view_nav_header_main)
-        ImageView dropIconImageView;
-
-        NavHeaderViewHolder(@NonNull View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-
-            if (baseActivity.typeface != null) {
-                accountNameTextView.setTypeface(baseActivity.typeface);
-                karmaTextView.setTypeface(baseActivity.typeface);
-            }
-        }
-    }
-
-    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
-        @BindView(R.id.title_text_view_item_nav_drawer_menu_group_title)
-        TextView titleTextView;
-        @BindView(R.id.collapse_indicator_image_view_item_nav_drawer_menu_group_title)
-        ImageView collapseIndicatorImageView;
-
-        MenuGroupTitleViewHolder(@NonNull View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-            if (baseActivity.typeface != null) {
-                titleTextView.setTypeface(baseActivity.typeface);
-            }
-            titleTextView.setTextColor(secondaryTextColor);
-            collapseIndicatorImageView.setColorFilter(secondaryTextColor, android.graphics.PorterDuff.Mode.SRC_IN);
-        }
-    }
-
-    class MenuItemViewHolder extends RecyclerView.ViewHolder {
-        @BindView(R.id.image_view_item_nav_drawer_menu_item)
-        ImageView imageView;
-        @BindView(R.id.text_view_item_nav_drawer_menu_item)
-        TextView menuTextView;
-
-        MenuItemViewHolder(@NonNull View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-            if (baseActivity.typeface != null) {
-                menuTextView.setTypeface(baseActivity.typeface);
-            }
-            menuTextView.setTextColor(primaryTextColor);
-            imageView.setColorFilter(primaryIconColor, android.graphics.PorterDuff.Mode.SRC_IN);
-        }
-    }
-
-    class DividerViewHolder extends RecyclerView.ViewHolder {
-
-        DividerViewHolder(@NonNull View itemView) {
-            super(itemView);
-            itemView.setBackgroundColor(dividerColor);
-        }
-    }
-
-    class FavoriteSubscribedThingViewHolder extends RecyclerView.ViewHolder {
-        @BindView(R.id.thing_icon_gif_image_view_item_nav_drawer_subscribed_thing)
-        GifImageView iconGifImageView;
-        @BindView(R.id.thing_name_text_view_item_nav_drawer_subscribed_thing)
-        TextView subredditNameTextView;
-
-        FavoriteSubscribedThingViewHolder(@NonNull View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-            if (baseActivity.typeface != null) {
-                subredditNameTextView.setTypeface(baseActivity.typeface);
-            }
-            subredditNameTextView.setTextColor(primaryTextColor);
-        }
-    }
-
-    class SubscribedThingViewHolder extends RecyclerView.ViewHolder {
-        @BindView(R.id.thing_icon_gif_image_view_item_nav_drawer_subscribed_thing)
-        GifImageView iconGifImageView;
-        @BindView(R.id.thing_name_text_view_item_nav_drawer_subscribed_thing)
-        TextView subredditNameTextView;
-
-        SubscribedThingViewHolder(@NonNull View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-            if (baseActivity.typeface != null) {
-                subredditNameTextView.setTypeface(baseActivity.typeface);
-            }
-            subredditNameTextView.setTextColor(primaryTextColor);
-        }
-    }
-
-    class AccountViewHolder extends RecyclerView.ViewHolder {
-        @BindView(R.id.profile_image_item_account)
-        GifImageView profileImageGifImageView;
-        @BindView(R.id.username_text_view_item_account)
-        TextView usernameTextView;
-
-        AccountViewHolder(@NonNull View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-            if (baseActivity.typeface != null) {
-                usernameTextView.setTypeface(baseActivity.typeface);
-            }
-            usernameTextView.setTextColor(primaryTextColor);
-        }
-    }
-}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/AccountManagementSectionRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/AccountManagementSectionRecyclerViewAdapter.java
new file mode 100644
index 00000000..55bf9602
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/AccountManagementSectionRecyclerViewAdapter.java
@@ -0,0 +1,167 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.bumptech.glide.RequestManager;
+import com.bumptech.glide.request.RequestOptions;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.account.Account;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import pl.droidsonroids.gif.GifImageView;
+
+public class AccountManagementSectionRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final int VIEW_TYPE_ACCOUNT = 1;
+    private static final int VIEW_TYPE_MENU_ITEM = 2;
+
+    private BaseActivity baseActivity;
+    private ArrayList<Account> accounts;
+    private RequestManager glide;
+    private int primaryTextColor;
+    private int primaryIconColor;
+    private boolean isLoggedIn;
+    private NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener;
+
+    public AccountManagementSectionRecyclerViewAdapter(BaseActivity baseActivity, CustomThemeWrapper customThemeWrapper,
+                                                       RequestManager glide, boolean isLoggedIn,
+                                                       NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener) {
+        this.baseActivity = baseActivity;
+        this.glide = glide;
+        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        primaryIconColor = customThemeWrapper.getPrimaryIconColor();
+        this.isLoggedIn = isLoggedIn;
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        if (position >= accounts.size()) {
+            return VIEW_TYPE_MENU_ITEM;
+        } else {
+            return VIEW_TYPE_ACCOUNT;
+        }
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        if (viewType == VIEW_TYPE_ACCOUNT) {
+            return new AccountViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_account, parent, false));
+        }
+
+        return new MenuItemViewHolder(LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.item_nav_drawer_menu_item, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof AccountViewHolder) {
+            glide.load(accounts.get(position).getProfileImageUrl())
+                    .error(glide.load(R.drawable.subreddit_default_icon))
+                    .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(128, 0)))
+                    .into(((AccountViewHolder) holder).profileImageGifImageView);
+            ((AccountViewHolder) holder).usernameTextView.setText(accounts.get(position).getAccountName());
+            holder.itemView.setOnClickListener(view ->
+                    itemClickListener.onAccountClick(accounts.get(position).getAccountName()));
+        } else if (holder instanceof MenuItemViewHolder) {
+            int stringId = 0;
+            int drawableId = 0;
+
+            if (isLoggedIn) {
+                int offset = accounts == null ? 0 : accounts.size();
+                if (position == offset) {
+                    stringId = R.string.add_account;
+                    drawableId = R.drawable.ic_outline_add_circle_outline_24dp;
+                } else if (position == offset + 1) {
+                    stringId = R.string.anonymous_account;
+                    drawableId = R.drawable.ic_anonymous_24dp;
+                } else if (position == offset + 2) {
+                    stringId = R.string.log_out;
+                    drawableId = R.drawable.ic_log_out_24dp;
+                }
+            } else {
+                stringId = R.string.add_account;
+                drawableId = R.drawable.ic_outline_add_circle_outline_24dp;
+            }
+
+            if (stringId != 0) {
+                ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
+                ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, drawableId));
+            }
+            int finalStringId = stringId;
+            holder.itemView.setOnClickListener(view -> itemClickListener.onMenuClick(finalStringId));
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        if (isLoggedIn) {
+            if (accounts != null && !accounts.isEmpty()) {
+                return 3 + accounts.size();
+            } else {
+                return 3;
+            }
+        } else {
+            if (accounts != null && !accounts.isEmpty()) {
+                return 1 + accounts.size();
+            } else {
+                return 1;
+            }
+        }
+    }
+
+    public void changeAccountsDataset(List<Account> accounts) {
+        this.accounts = (ArrayList<Account>) accounts;
+        notifyDataSetChanged();
+    }
+
+    class AccountViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.profile_image_item_account)
+        GifImageView profileImageGifImageView;
+        @BindView(R.id.username_text_view_item_account)
+        TextView usernameTextView;
+
+        AccountViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                usernameTextView.setTypeface(baseActivity.typeface);
+            }
+            usernameTextView.setTextColor(primaryTextColor);
+        }
+    }
+
+    class MenuItemViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.image_view_item_nav_drawer_menu_item)
+        ImageView imageView;
+        @BindView(R.id.text_view_item_nav_drawer_menu_item)
+        TextView menuTextView;
+
+        MenuItemViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                menuTextView.setTypeface(baseActivity.typeface);
+            }
+            menuTextView.setTextColor(primaryTextColor);
+            imageView.setColorFilter(primaryIconColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/AccountSectionRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/AccountSectionRecyclerViewAdapter.java
new file mode 100644
index 00000000..348eb199
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/AccountSectionRecyclerViewAdapter.java
@@ -0,0 +1,188 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.activities.InboxActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+
+public class AccountSectionRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
+    private static final int VIEW_TYPE_MENU_ITEM = 2;
+    private static final int ACCOUNT_SECTION_ITEMS = 4;
+
+    private BaseActivity baseActivity;
+    private int inboxCount;
+    private int primaryTextColor;
+    private int secondaryTextColor;
+    private int primaryIconColor;
+    private boolean collapseAccountSection;
+    private boolean isLoggedIn;
+    private NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener;
+
+    public AccountSectionRecyclerViewAdapter(BaseActivity baseActivity, CustomThemeWrapper customThemeWrapper,
+                                             SharedPreferences navigationDrawerSharedPreferences, boolean isLoggedIn,
+                                             NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener) {
+        this.baseActivity = baseActivity;
+        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        secondaryTextColor = customThemeWrapper.getSecondaryTextColor();
+        primaryIconColor = customThemeWrapper.getPrimaryIconColor();
+        collapseAccountSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_ACCOUNT_SECTION, false);
+        this.isLoggedIn = isLoggedIn;
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? VIEW_TYPE_MENU_GROUP_TITLE : VIEW_TYPE_MENU_ITEM;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        if (viewType == VIEW_TYPE_MENU_GROUP_TITLE) {
+            return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
+        } else {
+            return new MenuItemViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_item, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof MenuGroupTitleViewHolder) {
+            ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_account);
+            if (collapseAccountSection) {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24dp);
+            } else {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24dp);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                if (collapseAccountSection) {
+                    collapseAccountSection = !collapseAccountSection;
+                    notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, ACCOUNT_SECTION_ITEMS);
+                } else {
+                    collapseAccountSection = !collapseAccountSection;
+                    notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, ACCOUNT_SECTION_ITEMS);
+                }
+                notifyItemChanged(holder.getBindingAdapterPosition());
+            });
+        } else if (holder instanceof MenuItemViewHolder) {
+            int stringId = 0;
+            int drawableId = 0;
+            boolean setOnClickListener = true;
+
+            if (isLoggedIn) {
+                switch (position) {
+                    case 1:
+                        stringId = R.string.profile;
+                        drawableId = R.drawable.ic_account_circle_24dp;
+                        break;
+                    case 2:
+                        stringId = R.string.subscriptions;
+                        drawableId = R.drawable.ic_subscritptions_bottom_app_bar_24dp;
+                        break;
+                    case 3:
+                        stringId = R.string.multi_reddit;
+                        drawableId = R.drawable.ic_multi_reddit_24dp;
+                        break;
+                    case 4:
+                        setOnClickListener = false;
+                        if (inboxCount > 0) {
+                            ((MenuItemViewHolder) holder).menuTextView.setText(baseActivity.getString(R.string.inbox_with_count, inboxCount));
+                        } else {
+                            ((MenuItemViewHolder) holder).menuTextView.setText(R.string.inbox);
+                        }
+                        ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_inbox_24dp));
+                        holder.itemView.setOnClickListener(view -> {
+                            Intent intent = new Intent(baseActivity, InboxActivity.class);
+                            baseActivity.startActivity(intent);
+                        });
+                        break;
+
+                }
+            } else {
+                if (position == 1) {
+                    stringId = R.string.subscriptions;
+                    drawableId = R.drawable.ic_subscritptions_bottom_app_bar_24dp;
+                } else {
+                    stringId = R.string.multi_reddit;
+                    drawableId = R.drawable.ic_multi_reddit_24dp;
+                }
+            }
+
+            if (stringId != 0) {
+                ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
+                ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, drawableId));
+            }
+            if (setOnClickListener) {
+                int finalStringId = stringId;
+                holder.itemView.setOnClickListener(view -> itemClickListener.onMenuClick(finalStringId));
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        if (isLoggedIn) {
+            return ACCOUNT_SECTION_ITEMS + 1;
+        }
+        return 3;
+    }
+
+    public void setInboxCount(int inboxCount) {
+        this.inboxCount = inboxCount;
+        notifyDataSetChanged();
+    }
+
+    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.title_text_view_item_nav_drawer_menu_group_title)
+        TextView titleTextView;
+        @BindView(R.id.collapse_indicator_image_view_item_nav_drawer_menu_group_title)
+        ImageView collapseIndicatorImageView;
+
+        MenuGroupTitleViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                titleTextView.setTypeface(baseActivity.typeface);
+            }
+            titleTextView.setTextColor(secondaryTextColor);
+            collapseIndicatorImageView.setColorFilter(secondaryTextColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    class MenuItemViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.image_view_item_nav_drawer_menu_item)
+        ImageView imageView;
+        @BindView(R.id.text_view_item_nav_drawer_menu_item)
+        TextView menuTextView;
+
+        MenuItemViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                menuTextView.setTypeface(baseActivity.typeface);
+            }
+            menuTextView.setTextColor(primaryTextColor);
+            imageView.setColorFilter(primaryIconColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/FavoriteSubscribedSubredditsSectionRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/FavoriteSubscribedSubredditsSectionRecyclerViewAdapter.java
new file mode 100644
index 00000000..023b7944
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/FavoriteSubscribedSubredditsSectionRecyclerViewAdapter.java
@@ -0,0 +1,169 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.content.SharedPreferences;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.bumptech.glide.RequestManager;
+import com.bumptech.glide.request.RequestOptions;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.subscribedsubreddit.SubscribedSubredditData;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+import pl.droidsonroids.gif.GifImageView;
+
+public class FavoriteSubscribedSubredditsSectionRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
+    private static final int VIEW_TYPE_FAVORITE_SUBSCRIBED_SUBREDDIT = 2;
+
+    private BaseActivity baseActivity;
+    private RequestManager glide;
+    private int primaryTextColor;
+    private int secondaryTextColor;
+    private boolean collapseFavoriteSubredditsSection;
+    private boolean hideFavoriteSubredditsSection;
+    private NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener;
+    private ArrayList<SubscribedSubredditData> favoriteSubscribedSubreddits = new ArrayList<>();
+
+    public FavoriteSubscribedSubredditsSectionRecyclerViewAdapter(BaseActivity baseActivity, RequestManager glide,
+                                                                  CustomThemeWrapper customThemeWrapper,
+                                                                  SharedPreferences navigationDrawerSharedPreferences,
+                                                                  NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener) {
+        this.baseActivity = baseActivity;
+        this.glide = glide;
+        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        secondaryTextColor = customThemeWrapper.getSecondaryTextColor();
+        collapseFavoriteSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_FAVORITE_SUBREDDITS_SECTION, false);
+        hideFavoriteSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.HIDE_FAVORITE_SUBREDDITS_SECTION, false);
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? VIEW_TYPE_MENU_GROUP_TITLE : VIEW_TYPE_FAVORITE_SUBSCRIBED_SUBREDDIT;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        if (viewType == VIEW_TYPE_MENU_GROUP_TITLE) {
+            return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
+        } else {
+            return new FavoriteSubscribedThingViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_subscribed_thing, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof MenuGroupTitleViewHolder) {
+            ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.favorites);
+            if (collapseFavoriteSubredditsSection) {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24dp);
+            } else {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24dp);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                if (collapseFavoriteSubredditsSection) {
+                    collapseFavoriteSubredditsSection = !collapseFavoriteSubredditsSection;
+                    notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, favoriteSubscribedSubreddits.size());
+                } else {
+                    collapseFavoriteSubredditsSection = !collapseFavoriteSubredditsSection;
+                    notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, favoriteSubscribedSubreddits.size());
+                }
+                notifyItemChanged(holder.getBindingAdapterPosition());
+            });
+        } else if (holder instanceof FavoriteSubscribedThingViewHolder) {
+            SubscribedSubredditData subreddit = favoriteSubscribedSubreddits.get(position - 1);
+            String subredditName = subreddit.getName();
+            String iconUrl = subreddit.getIconUrl();
+            ((FavoriteSubscribedThingViewHolder) holder).subredditNameTextView.setText(subredditName);
+            if (iconUrl != null && !iconUrl.equals("")) {
+                glide.load(iconUrl)
+                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
+                        .error(glide.load(R.drawable.subreddit_default_icon)
+                                .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0))))
+                        .into(((FavoriteSubscribedThingViewHolder) holder).iconGifImageView);
+            } else {
+                glide.load(R.drawable.subreddit_default_icon)
+                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
+                        .into(((FavoriteSubscribedThingViewHolder) holder).iconGifImageView);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                itemClickListener.onSubscribedSubredditClick(subredditName);
+            });
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        if (hideFavoriteSubredditsSection) {
+            return 0;
+        }
+        return favoriteSubscribedSubreddits.isEmpty() ? 0 : (collapseFavoriteSubredditsSection ? 1 : favoriteSubscribedSubreddits.size() + 1);
+    }
+
+    @Override
+    public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
+        super.onViewRecycled(holder);
+        if (holder instanceof FavoriteSubscribedThingViewHolder) {
+            glide.clear(((FavoriteSubscribedThingViewHolder) holder).iconGifImageView);
+        }
+    }
+
+    public void setFavoriteSubscribedSubreddits(List<SubscribedSubredditData> favoriteSubscribedSubreddits) {
+        this.favoriteSubscribedSubreddits = (ArrayList<SubscribedSubredditData>) favoriteSubscribedSubreddits;
+        notifyDataSetChanged();
+    }
+
+    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.title_text_view_item_nav_drawer_menu_group_title)
+        TextView titleTextView;
+        @BindView(R.id.collapse_indicator_image_view_item_nav_drawer_menu_group_title)
+        ImageView collapseIndicatorImageView;
+
+        MenuGroupTitleViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                titleTextView.setTypeface(baseActivity.typeface);
+            }
+            titleTextView.setTextColor(secondaryTextColor);
+            collapseIndicatorImageView.setColorFilter(secondaryTextColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    class FavoriteSubscribedThingViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.thing_icon_gif_image_view_item_nav_drawer_subscribed_thing)
+        GifImageView iconGifImageView;
+        @BindView(R.id.thing_name_text_view_item_nav_drawer_subscribed_thing)
+        TextView subredditNameTextView;
+
+        FavoriteSubscribedThingViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                subredditNameTextView.setTypeface(baseActivity.typeface);
+            }
+            subredditNameTextView.setTextColor(primaryTextColor);
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/HeaderSectionRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/HeaderSectionRecyclerViewAdapter.java
new file mode 100644
index 00000000..6533f610
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/HeaderSectionRecyclerViewAdapter.java
@@ -0,0 +1,215 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import static androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG;
+import static androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL;
+
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.biometric.BiometricManager;
+import androidx.biometric.BiometricPrompt;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.res.ResourcesCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.bumptech.glide.RequestManager;
+import com.bumptech.glide.request.RequestOptions;
+
+import java.util.concurrent.Executor;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+import pl.droidsonroids.gif.GifImageView;
+
+public class HeaderSectionRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+    private BaseActivity baseActivity;
+    private Resources resources;
+    private RequestManager glide;
+    private String accountName;
+    private String profileImageUrl;
+    private String bannerImageUrl;
+    private int karma;
+    private boolean requireAuthToAccountSection;
+    private boolean showAvatarOnTheRightInTheNavigationDrawer;
+    private boolean isLoggedIn;
+    private boolean isInMainPage = true;
+    private PageToggle pageToggle;
+
+    public HeaderSectionRecyclerViewAdapter(BaseActivity baseActivity, RequestManager glide, String accountName,
+                                            SharedPreferences sharedPreferences,
+                                            SharedPreferences navigationDrawerSharedPreferences,
+                                            PageToggle pageToggle) {
+        this.baseActivity = baseActivity;
+        resources = baseActivity.getResources();
+        this.glide = glide;
+        this.accountName = accountName;
+        isLoggedIn = accountName != null;
+        this.pageToggle = pageToggle;
+        requireAuthToAccountSection = sharedPreferences.getBoolean(SharedPreferencesUtils.REQUIRE_AUTHENTICATION_TO_GO_TO_ACCOUNT_SECTION_IN_NAVIGATION_DRAWER, false);
+        showAvatarOnTheRightInTheNavigationDrawer = sharedPreferences.getBoolean(SharedPreferencesUtils.SHOW_AVATAR_ON_THE_RIGHT, false);
+        showAvatarOnTheRightInTheNavigationDrawer = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.SHOW_AVATAR_ON_THE_RIGHT, false);
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        return new NavHeaderViewHolder(LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.nav_header_main, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof NavHeaderViewHolder) {
+            RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) ((NavHeaderViewHolder) holder).profileImageView.getLayoutParams();
+            if (showAvatarOnTheRightInTheNavigationDrawer) {
+                params.addRule(RelativeLayout.ALIGN_PARENT_END);
+            } else {
+                params.removeRule(RelativeLayout.ALIGN_PARENT_END);
+            }
+            ((NavHeaderViewHolder) holder).profileImageView.setLayoutParams(params);
+            if (isLoggedIn) {
+                ((NavHeaderViewHolder) holder).karmaTextView.setText(baseActivity.getString(R.string.karma_info, karma));
+                ((NavHeaderViewHolder) holder).accountNameTextView.setText(accountName);
+                if (profileImageUrl != null && !profileImageUrl.equals("")) {
+                    glide.load(profileImageUrl)
+                            .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
+                            .error(glide.load(R.drawable.subreddit_default_icon)
+                                    .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0))))
+                            .into(((NavHeaderViewHolder) holder).profileImageView);
+                } else {
+                    glide.load(R.drawable.subreddit_default_icon)
+                            .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
+                            .into(((NavHeaderViewHolder) holder).profileImageView);
+                }
+
+                if (bannerImageUrl != null && !bannerImageUrl.equals("")) {
+                    glide.load(bannerImageUrl).into(((NavHeaderViewHolder) holder).bannerImageView);
+                }
+            } else {
+                ((NavHeaderViewHolder) holder).karmaTextView.setText(R.string.press_here_to_login);
+                ((NavHeaderViewHolder) holder).accountNameTextView.setText(R.string.anonymous_account);
+                glide.load(R.drawable.subreddit_default_icon)
+                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
+                        .into(((NavHeaderViewHolder) holder).profileImageView);
+            }
+
+            if (isInMainPage) {
+                ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_down_24dp));
+            } else {
+                ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_up_24dp));
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                if (isInMainPage) {
+                    if (requireAuthToAccountSection) {
+                        BiometricManager biometricManager = BiometricManager.from(baseActivity);
+                        if (biometricManager.canAuthenticate(BIOMETRIC_STRONG | DEVICE_CREDENTIAL) == BiometricManager.BIOMETRIC_SUCCESS) {
+                            Executor executor = ContextCompat.getMainExecutor(baseActivity);
+                            BiometricPrompt biometricPrompt = new BiometricPrompt(baseActivity,
+                                    executor, new BiometricPrompt.AuthenticationCallback() {
+                                @Override
+                                public void onAuthenticationSucceeded(
+                                        @NonNull BiometricPrompt.AuthenticationResult result) {
+                                    super.onAuthenticationSucceeded(result);
+                                    pageToggle.openAccountSection();
+                                    openAccountSection(((NavHeaderViewHolder) holder).dropIconImageView);
+                                }
+                            });
+
+                            BiometricPrompt.PromptInfo promptInfo = new BiometricPrompt.PromptInfo.Builder()
+                                    .setTitle(baseActivity.getString(R.string.unlock_account_section))
+                                    .setAllowedAuthenticators(BIOMETRIC_STRONG | DEVICE_CREDENTIAL)
+                                    .build();
+
+                            biometricPrompt.authenticate(promptInfo);
+                        } else {
+                            pageToggle.openAccountSection();
+                            openAccountSection(((NavHeaderViewHolder) holder).dropIconImageView);
+                        }
+                    } else {
+                        pageToggle.openAccountSection();
+                        openAccountSection(((NavHeaderViewHolder) holder).dropIconImageView);
+                    }
+                } else {
+                    ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.ic_baseline_arrow_drop_down_24dp, null));
+                    pageToggle.closeAccountSectionWithoutChangeIconResource();
+                    closeAccountSectionWithoutChangeIconResource(false);
+                }
+            });
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return 1;
+    }
+
+    private void openAccountSection(ImageView dropIconImageView) {
+        dropIconImageView.setImageDrawable(ResourcesCompat.getDrawable(resources, R.drawable.ic_baseline_arrow_drop_up_24dp, null));
+        isInMainPage = false;
+    }
+
+    public boolean closeAccountSectionWithoutChangeIconResource(boolean checkIsInMainPage) {
+        if (!(checkIsInMainPage && isInMainPage)) {
+            isInMainPage = true;
+            return true;
+        }
+
+        notifyItemChanged(0);
+        return false;
+    }
+
+    public void updateAccountInfo(String profileImageUrl, String bannerImageUrl, int karma) {
+        this.profileImageUrl = profileImageUrl;
+        this.bannerImageUrl = bannerImageUrl;
+        this.karma = karma;
+        notifyItemChanged(0);
+    }
+
+    public void setRequireAuthToAccountSection(boolean requireAuthToAccountSection) {
+        this.requireAuthToAccountSection = requireAuthToAccountSection;
+    }
+
+    public void setShowAvatarOnTheRightInTheNavigationDrawer(boolean showAvatarOnTheRightInTheNavigationDrawer) {
+        this.showAvatarOnTheRightInTheNavigationDrawer = showAvatarOnTheRightInTheNavigationDrawer;
+    }
+
+    class NavHeaderViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.name_text_view_nav_header_main)
+        TextView accountNameTextView;
+        @BindView(R.id.karma_text_view_nav_header_main)
+        TextView karmaTextView;
+        @BindView(R.id.profile_image_view_nav_header_main)
+        GifImageView profileImageView;
+        @BindView(R.id.banner_image_view_nav_header_main)
+        ImageView bannerImageView;
+        @BindView(R.id.account_switcher_image_view_nav_header_main)
+        ImageView dropIconImageView;
+
+        NavHeaderViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+
+            if (baseActivity.typeface != null) {
+                accountNameTextView.setTypeface(baseActivity.typeface);
+                karmaTextView.setTypeface(baseActivity.typeface);
+            }
+        }
+    }
+
+    public interface PageToggle {
+        void openAccountSection();
+        void closeAccountSectionWithoutChangeIconResource();
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/NavigationDrawerRecyclerViewMergedAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/NavigationDrawerRecyclerViewMergedAdapter.java
new file mode 100644
index 00000000..553aaee4
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/NavigationDrawerRecyclerViewMergedAdapter.java
@@ -0,0 +1,149 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+
+import androidx.recyclerview.widget.ConcatAdapter;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.RequestManager;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ml.docilealligator.infinityforreddit.account.Account;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.subscribedsubreddit.SubscribedSubredditData;
+
+public class NavigationDrawerRecyclerViewMergedAdapter {
+    private HeaderSectionRecyclerViewAdapter headerSectionRecyclerViewAdapter;
+    private AccountSectionRecyclerViewAdapter accountSectionRecyclerViewAdapter;
+    private RedditSectionRecyclerViewAdapter redditSectionRecyclerViewAdapter;
+    private PostSectionRecyclerViewAdapter postSectionRecyclerViewAdapter;
+    private PreferenceSectionRecyclerViewAdapter preferenceSectionRecyclerViewAdapter;
+    private FavoriteSubscribedSubredditsSectionRecyclerViewAdapter favoriteSubscribedSubredditsSectionRecyclerViewAdapter;
+    private SubscribedSubredditsRecyclerViewAdapter subscribedSubredditsRecyclerViewAdapter;
+    private AccountManagementSectionRecyclerViewAdapter accountManagementSectionRecyclerViewAdapter;
+    private ConcatAdapter mainPageConcatAdapter;
+
+    private Resources resources;
+    private ArrayList<Account> accounts;
+    private boolean isLoggedIn;
+    private boolean isInMainPage = true;
+
+    public NavigationDrawerRecyclerViewMergedAdapter(BaseActivity baseActivity, SharedPreferences sharedPreferences,
+                                                     SharedPreferences nsfwAndSpoilerSharedPreferences,
+                                                     SharedPreferences navigationDrawerSharedPreferences,
+                                                     CustomThemeWrapper customThemeWrapper,
+                                                     String accountName,
+                                                     ItemClickListener itemClickListener) {
+        RequestManager glide = Glide.with(baseActivity);
+
+        headerSectionRecyclerViewAdapter = new HeaderSectionRecyclerViewAdapter(baseActivity, glide, accountName,
+                sharedPreferences, navigationDrawerSharedPreferences, new HeaderSectionRecyclerViewAdapter.PageToggle() {
+            @Override
+            public void openAccountSection() {
+                NavigationDrawerRecyclerViewMergedAdapter.this.openAccountSection();
+            }
+
+            @Override
+            public void closeAccountSectionWithoutChangeIconResource() {
+                NavigationDrawerRecyclerViewMergedAdapter.this.closeAccountSectionWithoutChangeIconResource();
+            }
+        });
+        accountSectionRecyclerViewAdapter = new AccountSectionRecyclerViewAdapter(baseActivity, customThemeWrapper,
+                navigationDrawerSharedPreferences, accountName != null, itemClickListener);
+        redditSectionRecyclerViewAdapter = new RedditSectionRecyclerViewAdapter(baseActivity, customThemeWrapper,
+                navigationDrawerSharedPreferences, itemClickListener);
+        postSectionRecyclerViewAdapter = new PostSectionRecyclerViewAdapter(baseActivity, customThemeWrapper,
+                navigationDrawerSharedPreferences, accountName != null, itemClickListener);
+        preferenceSectionRecyclerViewAdapter = new PreferenceSectionRecyclerViewAdapter(baseActivity, customThemeWrapper,
+                accountName, nsfwAndSpoilerSharedPreferences, navigationDrawerSharedPreferences, itemClickListener);
+        favoriteSubscribedSubredditsSectionRecyclerViewAdapter = new FavoriteSubscribedSubredditsSectionRecyclerViewAdapter(
+                baseActivity, glide, customThemeWrapper, navigationDrawerSharedPreferences, itemClickListener);
+        subscribedSubredditsRecyclerViewAdapter = new SubscribedSubredditsRecyclerViewAdapter(baseActivity, glide,
+                customThemeWrapper, navigationDrawerSharedPreferences, itemClickListener);
+        accountManagementSectionRecyclerViewAdapter = new AccountManagementSectionRecyclerViewAdapter(baseActivity,
+                customThemeWrapper, glide, accountName != null, itemClickListener);
+
+        mainPageConcatAdapter = new ConcatAdapter(
+                headerSectionRecyclerViewAdapter,
+                accountSectionRecyclerViewAdapter,
+                redditSectionRecyclerViewAdapter,
+                postSectionRecyclerViewAdapter,
+                preferenceSectionRecyclerViewAdapter,
+                favoriteSubscribedSubredditsSectionRecyclerViewAdapter,
+                subscribedSubredditsRecyclerViewAdapter);
+    }
+
+    public ConcatAdapter getConcatAdapter() {
+        return mainPageConcatAdapter;
+    }
+
+    private void openAccountSection() {
+        mainPageConcatAdapter.removeAdapter(accountSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.removeAdapter(redditSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.removeAdapter(postSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.removeAdapter(preferenceSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.removeAdapter(favoriteSubscribedSubredditsSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.removeAdapter(subscribedSubredditsRecyclerViewAdapter);
+
+        mainPageConcatAdapter.addAdapter(accountManagementSectionRecyclerViewAdapter);
+        isInMainPage = false;
+    }
+
+    public void closeAccountSectionWithoutChangeIconResource() {
+        mainPageConcatAdapter.removeAdapter(accountManagementSectionRecyclerViewAdapter);
+
+        mainPageConcatAdapter.addAdapter(accountSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.addAdapter(redditSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.addAdapter(postSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.addAdapter(preferenceSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.addAdapter(favoriteSubscribedSubredditsSectionRecyclerViewAdapter);
+        mainPageConcatAdapter.addAdapter(subscribedSubredditsRecyclerViewAdapter);
+    }
+
+    public void closeAccountSectionWithoutChangeIconResource(boolean checkIsInMainPage) {
+        closeAccountSectionWithoutChangeIconResource();
+        headerSectionRecyclerViewAdapter.closeAccountSectionWithoutChangeIconResource(checkIsInMainPage);
+    }
+
+    public void updateAccountInfo(String profileImageUrl, String bannerImageUrl, int karma) {
+        headerSectionRecyclerViewAdapter.updateAccountInfo(profileImageUrl, bannerImageUrl, karma);
+    }
+
+    public void setRequireAuthToAccountSection(boolean requireAuthToAccountSection) {
+        headerSectionRecyclerViewAdapter.setRequireAuthToAccountSection(requireAuthToAccountSection);
+    }
+
+    public void setShowAvatarOnTheRightInTheNavigationDrawer(boolean showAvatarOnTheRightInTheNavigationDrawer) {
+        headerSectionRecyclerViewAdapter.setShowAvatarOnTheRightInTheNavigationDrawer(showAvatarOnTheRightInTheNavigationDrawer);
+    }
+
+    public void changeAccountsDataset(List<Account> accounts) {
+        accountManagementSectionRecyclerViewAdapter.changeAccountsDataset(accounts);
+    }
+
+    public void setInboxCount(int inboxCount) {
+        accountSectionRecyclerViewAdapter.setInboxCount(inboxCount);
+    }
+
+    public void setNSFWEnabled(boolean isNSFWEnabled) {
+        preferenceSectionRecyclerViewAdapter.setNSFWEnabled(isNSFWEnabled);
+    }
+
+    public void setFavoriteSubscribedSubreddits(List<SubscribedSubredditData> favoriteSubscribedSubreddits) {
+        favoriteSubscribedSubredditsSectionRecyclerViewAdapter.setFavoriteSubscribedSubreddits(favoriteSubscribedSubreddits);
+    }
+
+    public void setSubscribedSubreddits(List<SubscribedSubredditData> subscribedSubreddits) {
+        subscribedSubredditsRecyclerViewAdapter.setSubscribedSubreddits(subscribedSubreddits);
+    }
+
+    public interface ItemClickListener {
+        void onMenuClick(int stringId);
+        void onSubscribedSubredditClick(String subredditName);
+        void onAccountClick(String accountName);
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/PostSectionRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/PostSectionRecyclerViewAdapter.java
new file mode 100644
index 00000000..608d1e18
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/PostSectionRecyclerViewAdapter.java
@@ -0,0 +1,158 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.content.SharedPreferences;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+
+public class PostSectionRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
+    private static final int VIEW_TYPE_MENU_ITEM = 2;
+    private static final int POST_SECTION_ITEMS = 5;
+
+    private BaseActivity baseActivity;
+    private int primaryTextColor;
+    private int secondaryTextColor;
+    private int primaryIconColor;
+    private boolean collapsePostSection;
+    private boolean isLoggedIn;
+    private NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener;
+
+    public PostSectionRecyclerViewAdapter(BaseActivity baseActivity, CustomThemeWrapper customThemeWrapper,
+                                          SharedPreferences navigationDrawerSharedPreferences,
+                                          boolean isLoggedIn, NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener) {
+        this.baseActivity = baseActivity;
+        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        secondaryTextColor = customThemeWrapper.getSecondaryTextColor();
+        primaryIconColor = customThemeWrapper.getPrimaryIconColor();
+        collapsePostSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_POST_SECTION, false);
+        this.isLoggedIn = isLoggedIn;
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? VIEW_TYPE_MENU_GROUP_TITLE : VIEW_TYPE_MENU_ITEM;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        if (viewType == VIEW_TYPE_MENU_GROUP_TITLE) {
+            return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
+        } else {
+            return new MenuItemViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_item, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof MenuGroupTitleViewHolder) {
+            ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_post);
+            if (collapsePostSection) {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24dp);
+            } else {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24dp);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                if (collapsePostSection) {
+                    collapsePostSection = !collapsePostSection;
+                    notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, POST_SECTION_ITEMS);
+                } else {
+                    collapsePostSection = !collapsePostSection;
+                    notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, POST_SECTION_ITEMS);
+                }
+                notifyItemChanged(holder.getBindingAdapterPosition());
+            });
+        } else if (holder instanceof MenuItemViewHolder) {
+            int stringId = 0;
+            int drawableId = 0;
+
+            if (isLoggedIn) {
+                switch (position) {
+                    case 1:
+                        stringId = R.string.upvoted;
+                        drawableId = R.drawable.ic_arrow_upward_black_24dp;
+                        break;
+                    case 2:
+                        stringId = R.string.downvoted;
+                        drawableId = R.drawable.ic_arrow_downward_black_24dp;
+                        break;
+                    case 3:
+                        stringId = R.string.hidden;
+                        drawableId = R.drawable.ic_outline_lock_24dp;
+                        break;
+                    case 4:
+                        stringId = R.string.account_saved_thing_activity_label;
+                        drawableId = R.drawable.ic_outline_bookmarks_24dp;
+                        break;
+                    case 5:
+                        stringId = R.string.gilded;
+                        drawableId = R.drawable.ic_star_border_24dp;
+                        break;
+                }
+            }
+
+            ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
+            ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, drawableId));
+            int finalStringId = stringId;
+            holder.itemView.setOnClickListener(view -> itemClickListener.onMenuClick(finalStringId));
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return isLoggedIn ? POST_SECTION_ITEMS + 1 : 0;
+    }
+
+    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.title_text_view_item_nav_drawer_menu_group_title)
+        TextView titleTextView;
+        @BindView(R.id.collapse_indicator_image_view_item_nav_drawer_menu_group_title)
+        ImageView collapseIndicatorImageView;
+
+        MenuGroupTitleViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                titleTextView.setTypeface(baseActivity.typeface);
+            }
+            titleTextView.setTextColor(secondaryTextColor);
+            collapseIndicatorImageView.setColorFilter(secondaryTextColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    class MenuItemViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.image_view_item_nav_drawer_menu_item)
+        ImageView imageView;
+        @BindView(R.id.text_view_item_nav_drawer_menu_item)
+        TextView menuTextView;
+
+        MenuItemViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                menuTextView.setTypeface(baseActivity.typeface);
+            }
+            menuTextView.setTextColor(primaryTextColor);
+            imageView.setColorFilter(primaryIconColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/PreferenceSectionRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/PreferenceSectionRecyclerViewAdapter.java
new file mode 100644
index 00000000..788b4895
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/PreferenceSectionRecyclerViewAdapter.java
@@ -0,0 +1,187 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.content.SharedPreferences;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+
+public class PreferenceSectionRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
+    private static final int VIEW_TYPE_MENU_ITEM = 2;
+    private static final int PREFERENCES_SECTION_ITEMS = 3;
+
+    private BaseActivity baseActivity;
+    private Resources resources;
+    private int primaryTextColor;
+    private int secondaryTextColor;
+    private int primaryIconColor;
+    private boolean isNSFWEnabled;
+    private boolean collapsePreferencesSection;
+    private NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener;
+
+    public PreferenceSectionRecyclerViewAdapter(BaseActivity baseActivity, CustomThemeWrapper customThemeWrapper,
+                                                String accountName, SharedPreferences nsfwAndSpoilerSharedPreferences,
+                                                SharedPreferences navigationDrawerSharedPreferences,
+                                                NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener) {
+        this.baseActivity = baseActivity;
+        resources = baseActivity.getResources();
+        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        secondaryTextColor = customThemeWrapper.getSecondaryTextColor();
+        primaryIconColor = customThemeWrapper.getPrimaryIconColor();
+        isNSFWEnabled = nsfwAndSpoilerSharedPreferences.getBoolean((accountName == null ? "" : accountName) + SharedPreferencesUtils.NSFW_BASE, false);
+        collapsePreferencesSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_PREFERENCES_SECTION, false);
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? VIEW_TYPE_MENU_GROUP_TITLE : VIEW_TYPE_MENU_ITEM;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        if (viewType == VIEW_TYPE_MENU_GROUP_TITLE) {
+            return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
+        } else {
+            return new MenuItemViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_item, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof MenuGroupTitleViewHolder) {
+            ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_preferences);
+            if (collapsePreferencesSection) {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24dp);
+            } else {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24dp);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                if (collapsePreferencesSection) {
+                    collapsePreferencesSection = !collapsePreferencesSection;
+                    notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, PREFERENCES_SECTION_ITEMS);
+                } else {
+                    collapsePreferencesSection = !collapsePreferencesSection;
+                    notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, PREFERENCES_SECTION_ITEMS);
+                }
+                notifyItemChanged(holder.getBindingAdapterPosition());
+            });
+        } else if (holder instanceof MenuItemViewHolder) {
+            int stringId = 0;
+            int drawableId = 0;
+            boolean setOnClickListener = true;
+
+            switch (position) {
+                case 1:
+                    if ((resources.getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK) != Configuration.UI_MODE_NIGHT_YES) {
+                        stringId = R.string.dark_theme;
+                        drawableId = R.drawable.ic_dark_theme_24dp;
+                    } else {
+                        stringId = R.string.light_theme;
+                        drawableId = R.drawable.ic_light_theme_24dp;
+                    }
+                    break;
+                case 2:
+                    setOnClickListener = false;
+                    if (isNSFWEnabled) {
+                        stringId = R.string.disable_nsfw;
+                        drawableId = R.drawable.ic_nsfw_off_24dp;
+                    } else {
+                        stringId = R.string.enable_nsfw;
+                        drawableId = R.drawable.ic_nsfw_on_24dp;
+                    }
+
+                    holder.itemView.setOnClickListener(view -> {
+                        if (isNSFWEnabled) {
+                            isNSFWEnabled = false;
+                            ((MenuItemViewHolder) holder).menuTextView.setText(R.string.enable_nsfw);
+                            ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_nsfw_on_24dp));
+                            itemClickListener.onMenuClick(R.string.disable_nsfw);
+                        } else {
+                            isNSFWEnabled = true;
+                            ((MenuItemViewHolder) holder).menuTextView.setText(R.string.disable_nsfw);
+                            ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, R.drawable.ic_nsfw_off_24dp));
+                            itemClickListener.onMenuClick(R.string.enable_nsfw);
+                        }
+                    });
+                    break;
+                case 3:
+                    stringId = R.string.settings;
+                    drawableId = R.drawable.ic_settings_24dp;
+            }
+
+            if (stringId != 0) {
+                ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
+                ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, drawableId));
+                if (setOnClickListener) {
+                    int finalStringId = stringId;
+                    holder.itemView.setOnClickListener(view -> itemClickListener.onMenuClick(finalStringId));
+                }
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return PREFERENCES_SECTION_ITEMS + 1;
+    }
+
+    public void setNSFWEnabled(boolean isNSFWEnabled) {
+        this.isNSFWEnabled = isNSFWEnabled;
+        notifyItemChanged(3);
+    }
+
+    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.title_text_view_item_nav_drawer_menu_group_title)
+        TextView titleTextView;
+        @BindView(R.id.collapse_indicator_image_view_item_nav_drawer_menu_group_title)
+        ImageView collapseIndicatorImageView;
+
+        MenuGroupTitleViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                titleTextView.setTypeface(baseActivity.typeface);
+            }
+            titleTextView.setTextColor(secondaryTextColor);
+            collapseIndicatorImageView.setColorFilter(secondaryTextColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    class MenuItemViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.image_view_item_nav_drawer_menu_item)
+        ImageView imageView;
+        @BindView(R.id.text_view_item_nav_drawer_menu_item)
+        TextView menuTextView;
+
+        MenuItemViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                menuTextView.setTypeface(baseActivity.typeface);
+            }
+            menuTextView.setTextColor(primaryTextColor);
+            imageView.setColorFilter(primaryIconColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/RedditSectionRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/RedditSectionRecyclerViewAdapter.java
new file mode 100644
index 00000000..4d33b3ef
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/RedditSectionRecyclerViewAdapter.java
@@ -0,0 +1,142 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.content.SharedPreferences;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.RecyclerView;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+
+public class RedditSectionRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
+    private static final int VIEW_TYPE_MENU_ITEM = 2;
+    private static final int REDDIT_SECTION_ITEMS = 2;
+
+    private BaseActivity baseActivity;
+    private int primaryTextColor;
+    private int secondaryTextColor;
+    private int primaryIconColor;
+    private boolean collapseRedditSection;
+    private NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener;
+
+    public RedditSectionRecyclerViewAdapter(BaseActivity baseActivity, CustomThemeWrapper customThemeWrapper,
+                                            SharedPreferences navigationDrawerSharedPreferences,
+                                            NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener) {
+        this.baseActivity = baseActivity;
+        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        secondaryTextColor = customThemeWrapper.getSecondaryTextColor();
+        primaryIconColor = customThemeWrapper.getPrimaryIconColor();
+        collapseRedditSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_REDDIT_SECTION, false);
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? VIEW_TYPE_MENU_GROUP_TITLE : VIEW_TYPE_MENU_ITEM;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        if (viewType == VIEW_TYPE_MENU_GROUP_TITLE) {
+            return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
+        } else {
+            return new MenuItemViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_item, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof MenuGroupTitleViewHolder) {
+            ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_reddit);
+            if (collapseRedditSection) {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24dp);
+            } else {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24dp);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                if (collapseRedditSection) {
+                    collapseRedditSection = !collapseRedditSection;
+                    notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, REDDIT_SECTION_ITEMS);
+                } else {
+                    collapseRedditSection = !collapseRedditSection;
+                    notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, REDDIT_SECTION_ITEMS);
+                }
+                notifyItemChanged(holder.getBindingAdapterPosition());
+            });
+        } else if (holder instanceof MenuItemViewHolder) {
+            int stringId = 0;
+            int drawableId = 0;
+
+            switch (position) {
+                case 1:
+                    stringId = R.string.rpan;
+                    drawableId = R.drawable.ic_rpan_24dp;
+                    break;
+                case 2:
+                    stringId = R.string.trending;
+                    drawableId = R.drawable.ic_trending_24dp;
+                    break;
+            }
+
+            ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
+            ((MenuItemViewHolder) holder).imageView.setImageDrawable(ContextCompat.getDrawable(baseActivity, drawableId));
+            int finalStringId = stringId;
+            holder.itemView.setOnClickListener(view -> itemClickListener.onMenuClick(finalStringId));
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return REDDIT_SECTION_ITEMS + 1;
+    }
+
+    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.title_text_view_item_nav_drawer_menu_group_title)
+        TextView titleTextView;
+        @BindView(R.id.collapse_indicator_image_view_item_nav_drawer_menu_group_title)
+        ImageView collapseIndicatorImageView;
+
+        MenuGroupTitleViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                titleTextView.setTypeface(baseActivity.typeface);
+            }
+            titleTextView.setTextColor(secondaryTextColor);
+            collapseIndicatorImageView.setColorFilter(secondaryTextColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    class MenuItemViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.image_view_item_nav_drawer_menu_item)
+        ImageView imageView;
+        @BindView(R.id.text_view_item_nav_drawer_menu_item)
+        TextView menuTextView;
+
+        MenuItemViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                menuTextView.setTypeface(baseActivity.typeface);
+            }
+            menuTextView.setTextColor(primaryTextColor);
+            imageView.setColorFilter(primaryIconColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/SubscribedSubredditsRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/SubscribedSubredditsRecyclerViewAdapter.java
new file mode 100644
index 00000000..3e77b1e0
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/navigationdrawer/SubscribedSubredditsRecyclerViewAdapter.java
@@ -0,0 +1,169 @@
+package ml.docilealligator.infinityforreddit.adapters.navigationdrawer;
+
+import android.content.SharedPreferences;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.bumptech.glide.RequestManager;
+import com.bumptech.glide.request.RequestOptions;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.subscribedsubreddit.SubscribedSubredditData;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+import pl.droidsonroids.gif.GifImageView;
+
+public class SubscribedSubredditsRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+
+    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
+    private static final int VIEW_TYPE_SUBSCRIBED_SUBREDDIT = 2;
+
+    private BaseActivity baseActivity;
+    private RequestManager glide;
+    private int primaryTextColor;
+    private int secondaryTextColor;
+    private boolean collapseSubscribedSubredditsSection;
+    private boolean hideSubscribedSubredditsSection;
+    private ArrayList<SubscribedSubredditData> subscribedSubreddits = new ArrayList<>();
+    private NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener;
+
+    public SubscribedSubredditsRecyclerViewAdapter(BaseActivity baseActivity, RequestManager glide,
+                                                   CustomThemeWrapper customThemeWrapper,
+                                                   SharedPreferences navigationDrawerSharedPreferences,
+                                                   NavigationDrawerRecyclerViewMergedAdapter.ItemClickListener itemClickListener) {
+        this.baseActivity = baseActivity;
+        this.glide = glide;
+        primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        secondaryTextColor = customThemeWrapper.getSecondaryTextColor();
+        collapseSubscribedSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.COLLAPSE_SUBSCRIBED_SUBREDDITS_SECTION, false);
+        hideSubscribedSubredditsSection = navigationDrawerSharedPreferences.getBoolean(SharedPreferencesUtils.HIDE_SUBSCRIBED_SUBREDDITS_SECTIONS, false);
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? VIEW_TYPE_MENU_GROUP_TITLE : VIEW_TYPE_SUBSCRIBED_SUBREDDIT;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        if (viewType == VIEW_TYPE_MENU_GROUP_TITLE) {
+            return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
+        } else {
+            return new SubscribedThingViewHolder(LayoutInflater.from(parent.getContext())
+                    .inflate(R.layout.item_nav_drawer_subscribed_thing, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof MenuGroupTitleViewHolder) {
+            ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.subscriptions);
+            if (collapseSubscribedSubredditsSection) {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_up_24dp);
+            } else {
+                ((MenuGroupTitleViewHolder) holder).collapseIndicatorImageView.setImageResource(R.drawable.ic_baseline_arrow_drop_down_24dp);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                if (collapseSubscribedSubredditsSection) {
+                    collapseSubscribedSubredditsSection = !collapseSubscribedSubredditsSection;
+                    notifyItemRangeInserted(holder.getBindingAdapterPosition() + 1, subscribedSubreddits.size());
+                } else {
+                    collapseSubscribedSubredditsSection = !collapseSubscribedSubredditsSection;
+                    notifyItemRangeRemoved(holder.getBindingAdapterPosition() + 1, subscribedSubreddits.size());
+                }
+                notifyItemChanged(holder.getBindingAdapterPosition());
+            });
+        } else if (holder instanceof SubscribedThingViewHolder) {
+            SubscribedSubredditData subreddit = subscribedSubreddits.get(position - 1);
+            String subredditName = subreddit.getName();
+            String iconUrl = subreddit.getIconUrl();
+            ((SubscribedThingViewHolder) holder).subredditNameTextView.setText(subredditName);
+            if (iconUrl != null && !iconUrl.equals("")) {
+                glide.load(iconUrl)
+                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
+                        .error(glide.load(R.drawable.subreddit_default_icon)
+                                .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0))))
+                        .into(((SubscribedThingViewHolder) holder).iconGifImageView);
+            } else {
+                glide.load(R.drawable.subreddit_default_icon)
+                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
+                        .into(((SubscribedThingViewHolder) holder).iconGifImageView);
+            }
+
+            holder.itemView.setOnClickListener(view -> {
+                itemClickListener.onSubscribedSubredditClick(subredditName);
+            });
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        if (hideSubscribedSubredditsSection) {
+            return 0;
+        }
+        return subscribedSubreddits.isEmpty() ? 0 : (collapseSubscribedSubredditsSection ? 1 : subscribedSubreddits.size() + 1);
+    }
+
+    @Override
+    public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
+        super.onViewRecycled(holder);
+        if (holder instanceof SubscribedThingViewHolder) {
+            glide.clear(((SubscribedThingViewHolder) holder).iconGifImageView);
+        }
+    }
+
+    public void setSubscribedSubreddits(List<SubscribedSubredditData> subscribedSubreddits) {
+        this.subscribedSubreddits = (ArrayList<SubscribedSubredditData>) subscribedSubreddits;
+        notifyDataSetChanged();
+    }
+
+    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.title_text_view_item_nav_drawer_menu_group_title)
+        TextView titleTextView;
+        @BindView(R.id.collapse_indicator_image_view_item_nav_drawer_menu_group_title)
+        ImageView collapseIndicatorImageView;
+
+        MenuGroupTitleViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                titleTextView.setTypeface(baseActivity.typeface);
+            }
+            titleTextView.setTextColor(secondaryTextColor);
+            collapseIndicatorImageView.setColorFilter(secondaryTextColor, android.graphics.PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    class SubscribedThingViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.thing_icon_gif_image_view_item_nav_drawer_subscribed_thing)
+        GifImageView iconGifImageView;
+        @BindView(R.id.thing_name_text_view_item_nav_drawer_subscribed_thing)
+        TextView subredditNameTextView;
+
+        SubscribedThingViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            if (baseActivity.typeface != null) {
+                subredditNameTextView.setTypeface(baseActivity.typeface);
+            }
+            subredditNameTextView.setTextColor(primaryTextColor);
+        }
+    }
+}
diff --git a/app/src/main/res/drawable/ic_baseline_arrow_drop_down_24px.xml b/app/src/main/res/drawable/ic_baseline_arrow_drop_down_24dp.xml
index af6df01c..af6df01c 100644
--- a/app/src/main/res/drawable/ic_baseline_arrow_drop_down_24px.xml
+++ b/app/src/main/res/drawable/ic_baseline_arrow_drop_down_24dp.xml
diff --git a/app/src/main/res/drawable/ic_baseline_arrow_drop_up_24px.xml b/app/src/main/res/drawable/ic_baseline_arrow_drop_up_24dp.xml
index 2cfbe4d2..2cfbe4d2 100644
--- a/app/src/main/res/drawable/ic_baseline_arrow_drop_up_24px.xml
+++ b/app/src/main/res/drawable/ic_baseline_arrow_drop_up_24dp.xml
diff --git a/app/src/main/res/layout/nav_header_main.xml b/app/src/main/res/layout/nav_header_main.xml
index 8ccdbe04..2b30f55a 100644
--- a/app/src/main/res/layout/nav_header_main.xml
+++ b/app/src/main/res/layout/nav_header_main.xml
@@ -55,6 +55,6 @@
         android:layout_margin="16dp"
         android:layout_alignParentBottom="true"
         android:layout_alignParentEnd="true"
-        android:src="@drawable/ic_baseline_arrow_drop_down_24px" />
+        android:src="@drawable/ic_baseline_arrow_drop_down_24dp" />
 
 </RelativeLayout>