Continue adding comment filter.

10 files changed, 432 insertions, 10 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java b/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java
index 2bb4f6ec..1cb8956a 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java
@@ -10,6 +10,7 @@ import ml.docilealligator.infinityforreddit.activities.AccountPostsActivity;
 import ml.docilealligator.infinityforreddit.activities.AccountSavedThingActivity;
 import ml.docilealligator.infinityforreddit.activities.CommentActivity;
 import ml.docilealligator.infinityforreddit.activities.CommentFilterPreferenceActivity;
+import ml.docilealligator.infinityforreddit.activities.CommentFilterUsageListingActivity;
 import ml.docilealligator.infinityforreddit.activities.CreateMultiRedditActivity;
 import ml.docilealligator.infinityforreddit.activities.CustomThemeListingActivity;
 import ml.docilealligator.infinityforreddit.activities.CustomThemePreviewActivity;
@@ -313,6 +314,8 @@ public interface AppComponent {
 
     void inject(CustomizeCommentFilterActivity customizeCommentFilterActivity);
 
+    void inject(CommentFilterUsageListingActivity commentFilterUsageListingActivity);
+
     @Component.Factory
     interface Factory {
         AppComponent create(@BindsInstance Application application);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterPreferenceActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterPreferenceActivity.java
index 170c5335..71b2a765 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterPreferenceActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterPreferenceActivity.java
@@ -89,7 +89,7 @@ public class CommentFilterPreferenceActivity extends BaseActivity {
 
     public void applyCommentFilterTo(CommentFilter commentFilter) {
         Intent intent = new Intent(this, CommentFilterUsageListingActivity.class);
-        intent.putExtra(CommentFilterUsageListingActivity.EXTRA_POST_FILTER, commentFilter);
+        intent.putExtra(CommentFilterUsageListingActivity.EXTRA_COMMENT_FILTER, commentFilter);
         startActivity(intent);
     }
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterUsageListingActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterUsageListingActivity.java
index 587addcf..b174e9e8 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterUsageListingActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/CommentFilterUsageListingActivity.java
@@ -1,18 +1,183 @@
 package ml.docilealligator.infinityforreddit.activities;
 
+import android.content.SharedPreferences;
+import android.content.res.ColorStateList;
 import android.os.Bundle;
+import android.os.Handler;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.TextView;
 
-import androidx.appcompat.app.AppCompatActivity;
+import androidx.annotation.NonNull;
+import androidx.lifecycle.ViewModelProvider;
 
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.google.android.material.textfield.TextInputEditText;
+import com.google.android.material.textfield.TextInputLayout;
+
+import java.util.concurrent.Executor;
+
+import javax.inject.Inject;
+import javax.inject.Named;
+
+import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.adapters.CommentFilterUsageRecyclerViewAdapter;
+import ml.docilealligator.infinityforreddit.bottomsheetfragments.CommentFilterUsageOptionsBottomSheetFragment;
+import ml.docilealligator.infinityforreddit.bottomsheetfragments.NewCommentFilterUsageBottomSheetFragment;
+import ml.docilealligator.infinityforreddit.commentfilter.CommentFilter;
+import ml.docilealligator.infinityforreddit.commentfilter.CommentFilterUsage;
+import ml.docilealligator.infinityforreddit.commentfilter.CommentFilterUsageViewModel;
+import ml.docilealligator.infinityforreddit.commentfilter.DeleteCommentFilterUsage;
+import ml.docilealligator.infinityforreddit.commentfilter.SaveCommentFilterUsage;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.databinding.ActivityCommentFilterUsageListingBinding;
+import ml.docilealligator.infinityforreddit.utils.Utils;
 
-public class CommentFilterUsageListingActivity extends AppCompatActivity {
+public class CommentFilterUsageListingActivity extends BaseActivity {
 
-    public static final String EXTRA_POST_FILTER = "EPF";
+    public static final String EXTRA_COMMENT_FILTER = "ECF";
+    @Inject
+    @Named("default")
+    SharedPreferences sharedPreferences;
+    @Inject
+    RedditDataRoomDatabase redditDataRoomDatabase;
+    @Inject
+    CustomThemeWrapper customThemeWrapper;
+    @Inject
+    Executor executor;
+    private ActivityCommentFilterUsageListingBinding binding;
+    public CommentFilterUsageViewModel commentFilterUsageViewModel;
+    private CommentFilterUsageRecyclerViewAdapter adapter;
+    private CommentFilter commentFilter;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        ((Infinity) getApplication()).getAppComponent().inject(this);
+
+        setImmersiveModeNotApplicable();
+
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_comment_filter_usage_listing);
+        binding = ActivityCommentFilterUsageListingBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        applyCustomTheme();
+
+        setSupportActionBar(binding.toolbarCommentFilterUsageListingActivity);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+        commentFilter = getIntent().getParcelableExtra(EXTRA_COMMENT_FILTER);
+
+        setTitle(commentFilter.name);
+
+        binding.fabCommentFilterUsageListingActivity.setOnClickListener(view -> {
+            NewCommentFilterUsageBottomSheetFragment newCommentFilterUsageBottomSheetFragment = new NewCommentFilterUsageBottomSheetFragment();
+            newCommentFilterUsageBottomSheetFragment.show(getSupportFragmentManager(), newCommentFilterUsageBottomSheetFragment.getTag());
+        });
+
+        adapter = new CommentFilterUsageRecyclerViewAdapter(this, customThemeWrapper, commentFilterUsage -> {
+            CommentFilterUsageOptionsBottomSheetFragment commentFilterUsageOptionsBottomSheetFragment = new CommentFilterUsageOptionsBottomSheetFragment();
+            Bundle bundle = new Bundle();
+            bundle.putParcelable(CommentFilterUsageOptionsBottomSheetFragment.EXTRA_COMMENT_FILTER_USAGE, commentFilterUsage);
+            commentFilterUsageOptionsBottomSheetFragment.setArguments(bundle);
+            commentFilterUsageOptionsBottomSheetFragment.show(getSupportFragmentManager(), commentFilterUsageOptionsBottomSheetFragment.getTag());
+        });
+        binding.recyclerViewCommentFilterUsageListingActivity.setAdapter(adapter);
+
+        commentFilterUsageViewModel = new ViewModelProvider(this,
+                new CommentFilterUsageViewModel.Factory(redditDataRoomDatabase, commentFilter.name)).get(CommentFilterUsageViewModel.class);
+
+        commentFilterUsageViewModel.getCommentFilterUsageListLiveData().observe(this, commentFilterUsages -> adapter.setCommentFilterUsages(commentFilterUsages));
+    }
+
+    public void newCommentFilterUsage(int type) {
+        switch (type) {
+            case CommentFilterUsage.SUBREDDIT_TYPE:
+            case CommentFilterUsage.USER_TYPE:
+                editAndCommentFilterUsageNameOfUsage(type, null);
+                break;
+        }
+    }
+
+    private void editAndCommentFilterUsageNameOfUsage(int type, String nameOfUsage) {
+        View dialogView = getLayoutInflater().inflate(R.layout.dialog_edit_post_or_comment_filter_name_of_usage, null);
+        TextView messageTextView = dialogView.findViewById(R.id.message_text_view_edit_post_or_comment_filter_name_of_usage_dialog);
+        messageTextView.setVisibility(View.GONE);
+        TextInputLayout textInputLayout = dialogView.findViewById(R.id.text_input_layout_edit_post_or_comment_filter_name_of_usage_dialog);
+        TextInputEditText textInputEditText = dialogView.findViewById(R.id.text_input_edit_text_edit_post_or_comment_filter_name_of_usage_dialog);
+        int primaryTextColor = customThemeWrapper.getPrimaryTextColor();
+        textInputLayout.setBoxStrokeColor(primaryTextColor);
+        textInputLayout.setDefaultHintTextColor(ColorStateList.valueOf(primaryTextColor));
+        textInputEditText.setTextColor(primaryTextColor);
+        if (nameOfUsage != null) {
+            textInputEditText.setText(nameOfUsage);
+        }
+        textInputEditText.requestFocus();
+        int titleStringId = R.string.subreddit;
+        switch (type) {
+            case CommentFilterUsage.SUBREDDIT_TYPE:
+                textInputEditText.setHint(R.string.settings_tab_subreddit_name);
+                break;
+            case CommentFilterUsage.USER_TYPE:
+                textInputEditText.setHint(R.string.settings_tab_username);
+                titleStringId = R.string.user;
+                break;
+        }
+
+        Utils.showKeyboard(this, new Handler(), textInputEditText);
+        new MaterialAlertDialogBuilder(this, R.style.MaterialAlertDialogTheme)
+                .setTitle(titleStringId)
+                .setView(dialogView)
+                .setPositiveButton(R.string.ok, (editTextDialogInterface, i1)
+                        -> {
+                    Utils.hideKeyboard(this);
+
+                    CommentFilterUsage commentFilterUsage;
+                    if (!textInputEditText.getText().toString().equals("")) {
+                        commentFilterUsage = new CommentFilterUsage(commentFilter.name, type, textInputEditText.getText().toString());
+                        SaveCommentFilterUsage.saveCommentFilterUsage(redditDataRoomDatabase, executor, commentFilterUsage);
+                    }
+                })
+                .setNegativeButton(R.string.cancel, null)
+                .setOnDismissListener(editTextDialogInterface -> {
+                    Utils.hideKeyboard(this);
+                })
+                .show();
+    }
+
+    public void editCommentFilterUsage(CommentFilterUsage commentFilterUsage) {
+        editAndCommentFilterUsageNameOfUsage(commentFilterUsage.usage, commentFilterUsage.nameOfUsage);
+    }
+
+    public void deleteCommentFilterUsage(CommentFilterUsage commentFilterUsage) {
+        DeleteCommentFilterUsage.deleteCommentFilterUsage(redditDataRoomDatabase, executor, commentFilterUsage);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        }
+
+        return false;
+    }
+
+    @Override
+    protected SharedPreferences getDefaultSharedPreferences() {
+        return sharedPreferences;
+    }
+
+    @Override
+    protected CustomThemeWrapper getCustomThemeWrapper() {
+        return customThemeWrapper;
+    }
+
+    @Override
+    protected void applyCustomTheme() {
+        applyAppBarLayoutAndCollapsingToolbarLayoutAndToolbarTheme(binding.appbarLayoutCommentFilterUsageListingActivity, binding.collapsingToolbarLayoutCommentFilterUsageListingActivity, binding.toolbarCommentFilterUsageListingActivity);
+        applyFABTheme(binding.fabCommentFilterUsageListingActivity);
+        binding.getRoot().setBackgroundColor(customThemeWrapper.getBackgroundColor());
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostFilterUsageListingActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostFilterUsageListingActivity.java
index f92bf933..bb3265fa 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostFilterUsageListingActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/PostFilterUsageListingActivity.java
@@ -1,13 +1,11 @@
 package ml.docilealligator.infinityforreddit.activities;
 
-import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.ColorStateList;
 import android.os.Bundle;
 import android.os.Handler;
 import android.view.MenuItem;
 import android.view.View;
-import android.view.inputmethod.InputMethodManager;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.widget.Toolbar;
@@ -127,9 +125,9 @@ public class PostFilterUsageListingActivity extends BaseActivity {
     }
 
     private void editAndPostFilterUsageNameOfUsage(int type, String nameOfUsage) {
-        View dialogView = getLayoutInflater().inflate(R.layout.dialog_edit_post_filter_name_of_usage, null);
-        TextInputLayout textInputLayout = dialogView.findViewById(R.id.text_input_layout_edit_post_filter_name_of_usage_dialog);
-        TextInputEditText textInputEditText = dialogView.findViewById(R.id.text_input_edit_text_edit_post_filter_name_of_usage_dialog);
+        View dialogView = getLayoutInflater().inflate(R.layout.dialog_edit_post_or_comment_filter_name_of_usage, null);
+        TextInputLayout textInputLayout = dialogView.findViewById(R.id.text_input_layout_edit_post_or_comment_filter_name_of_usage_dialog);
+        TextInputEditText textInputEditText = dialogView.findViewById(R.id.text_input_edit_text_edit_post_or_comment_filter_name_of_usage_dialog);
         int primaryTextColor = customThemeWrapper.getPrimaryTextColor();
         textInputLayout.setBoxStrokeColor(primaryTextColor);
         textInputLayout.setDefaultHintTextColor(ColorStateList.valueOf(primaryTextColor));
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentFilterUsageRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentFilterUsageRecyclerViewAdapter.java
new file mode 100644
index 00000000..a6f510fd
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentFilterUsageRecyclerViewAdapter.java
@@ -0,0 +1,82 @@
+package ml.docilealligator.infinityforreddit.adapters;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.List;
+
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.activities.BaseActivity;
+import ml.docilealligator.infinityforreddit.commentfilter.CommentFilterUsage;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+
+public class CommentFilterUsageRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+    private List<CommentFilterUsage> commentFilterUsages;
+    private BaseActivity activity;
+    private CustomThemeWrapper customThemeWrapper;
+    private CommentFilterUsageRecyclerViewAdapter.OnItemClickListener onItemClickListener;
+
+    public interface OnItemClickListener {
+        void onClick(CommentFilterUsage commentFilterUsage);
+    }
+
+    public CommentFilterUsageRecyclerViewAdapter(BaseActivity activity, CustomThemeWrapper customThemeWrapper,
+                                              CommentFilterUsageRecyclerViewAdapter.OnItemClickListener onItemClickListener) {
+        this.activity = activity;
+        this.customThemeWrapper = customThemeWrapper;
+        this.onItemClickListener = onItemClickListener;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        return new CommentFilterUsageRecyclerViewAdapter.CommentFilterUsageViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_filter_usage, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        CommentFilterUsage commentFilterUsage = commentFilterUsages.get(position);
+        switch (commentFilterUsage.usage) {
+            case CommentFilterUsage.SUBREDDIT_TYPE:
+                ((CommentFilterUsageRecyclerViewAdapter.CommentFilterUsageViewHolder) holder).usageTextView.setText(activity.getString(R.string.post_filter_usage_subreddit, commentFilterUsage.nameOfUsage));
+                break;
+            case CommentFilterUsage.USER_TYPE:
+                ((CommentFilterUsageRecyclerViewAdapter.CommentFilterUsageViewHolder) holder).usageTextView.setText(activity.getString(R.string.post_filter_usage_user, commentFilterUsage.nameOfUsage));
+                break;
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return commentFilterUsages == null ? 0 : commentFilterUsages.size();
+    }
+
+    public void setCommentFilterUsages(List<CommentFilterUsage> commentFilterUsages) {
+        this.commentFilterUsages = commentFilterUsages;
+        notifyDataSetChanged();
+    }
+
+    private class CommentFilterUsageViewHolder extends RecyclerView.ViewHolder {
+        TextView usageTextView;
+
+        public CommentFilterUsageViewHolder(@NonNull View itemView) {
+            super(itemView);
+            usageTextView = (TextView) itemView;
+
+            usageTextView.setTextColor(customThemeWrapper.getPrimaryTextColor());
+
+            if (activity.typeface != null) {
+                usageTextView.setTypeface(activity.typeface);
+            }
+
+            usageTextView.setOnClickListener(view -> {
+                onItemClickListener.onClick(commentFilterUsages.get(getBindingAdapterPosition()));
+            });
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/CommentFilterUsageOptionsBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/CommentFilterUsageOptionsBottomSheetFragment.java
new file mode 100644
index 00000000..988dfdad
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/CommentFilterUsageOptionsBottomSheetFragment.java
@@ -0,0 +1,58 @@
+package ml.docilealligator.infinityforreddit.bottomsheetfragments;
+
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+
+import ml.docilealligator.infinityforreddit.activities.CommentFilterUsageListingActivity;
+import ml.docilealligator.infinityforreddit.commentfilter.CommentFilterUsage;
+import ml.docilealligator.infinityforreddit.customviews.LandscapeExpandedRoundedBottomSheetDialogFragment;
+import ml.docilealligator.infinityforreddit.databinding.FragmentCommentFilterUsageOptionsBottomSheetBinding;
+import ml.docilealligator.infinityforreddit.utils.Utils;
+
+public class CommentFilterUsageOptionsBottomSheetFragment extends LandscapeExpandedRoundedBottomSheetDialogFragment {
+
+    public static final String EXTRA_COMMENT_FILTER_USAGE = "ECFU";
+
+    private CommentFilterUsageListingActivity activity;
+
+    public CommentFilterUsageOptionsBottomSheetFragment() {
+        // Required empty public constructor
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        FragmentCommentFilterUsageOptionsBottomSheetBinding binding = FragmentCommentFilterUsageOptionsBottomSheetBinding.inflate(inflater, container, false);
+
+        CommentFilterUsage commentFilterUsage = getArguments().getParcelable(EXTRA_COMMENT_FILTER_USAGE);
+
+        binding.editTextViewCommentFilterUsageOptionsBottomSheetFragment.setOnClickListener(view -> {
+            activity.editCommentFilterUsage(commentFilterUsage);
+            dismiss();
+        });
+
+        binding.deleteTextViewCommentFilterUsageOptionsBottomSheetFragment.setOnClickListener(view -> {
+            activity.deleteCommentFilterUsage(commentFilterUsage);
+            dismiss();
+        });
+
+        if (activity.typeface != null) {
+            Utils.setFontToAllTextViews(binding.getRoot(), activity.typeface);
+        }
+
+        return binding.getRoot();
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        activity = (CommentFilterUsageListingActivity) context;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/NewCommentFilterUsageBottomSheetFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/NewCommentFilterUsageBottomSheetFragment.java
new file mode 100644
index 00000000..2ff59d2b
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/bottomsheetfragments/NewCommentFilterUsageBottomSheetFragment.java
@@ -0,0 +1,52 @@
+package ml.docilealligator.infinityforreddit.bottomsheetfragments;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+
+import ml.docilealligator.infinityforreddit.activities.CommentFilterUsageListingActivity;
+import ml.docilealligator.infinityforreddit.commentfilter.CommentFilterUsage;
+import ml.docilealligator.infinityforreddit.customviews.LandscapeExpandedRoundedBottomSheetDialogFragment;
+import ml.docilealligator.infinityforreddit.databinding.FragmentNewCommentFilterUsageBottomSheetBinding;
+import ml.docilealligator.infinityforreddit.utils.Utils;
+
+public class NewCommentFilterUsageBottomSheetFragment extends LandscapeExpandedRoundedBottomSheetDialogFragment {
+    private CommentFilterUsageListingActivity activity;
+
+    public NewCommentFilterUsageBottomSheetFragment() {
+        // Required empty public constructor
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        FragmentNewCommentFilterUsageBottomSheetBinding binding = FragmentNewCommentFilterUsageBottomSheetBinding.inflate(inflater, container, false);
+
+        binding.subredditTextViewNewCommentFilterUsageBottomSheetFragment.setOnClickListener(view -> {
+            activity.newCommentFilterUsage(CommentFilterUsage.SUBREDDIT_TYPE);
+            dismiss();
+        });
+
+        binding.userTextViewNewCommentFilterUsageBottomSheetFragment.setOnClickListener(view -> {
+            activity.newCommentFilterUsage(CommentFilterUsage.USER_TYPE);
+            dismiss();
+        });
+
+        if (activity.typeface != null) {
+            Utils.setFontToAllTextViews(binding.getRoot(), activity.typeface);
+        }
+
+        return binding.getRoot();
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        activity = (CommentFilterUsageListingActivity) context;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/CommentFilterUsageViewModel.java b/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/CommentFilterUsageViewModel.java
new file mode 100644
index 00000000..89a03f41
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/CommentFilterUsageViewModel.java
@@ -0,0 +1,40 @@
+package ml.docilealligator.infinityforreddit.commentfilter;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+
+import java.util.List;
+
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+
+public class CommentFilterUsageViewModel extends ViewModel {
+    private LiveData<List<CommentFilterUsage>> mCommentFilterUsageListLiveData;
+
+    public CommentFilterUsageViewModel(RedditDataRoomDatabase redditDataRoomDatabase, String name) {
+        mCommentFilterUsageListLiveData = redditDataRoomDatabase.commentFilterUsageDao().getAllCommentFilterUsageLiveData(name);
+    }
+
+    public LiveData<List<CommentFilterUsage>> getCommentFilterUsageListLiveData() {
+        return mCommentFilterUsageListLiveData;
+    }
+
+    public static class Factory extends ViewModelProvider.NewInstanceFactory {
+
+        private final RedditDataRoomDatabase mRedditDataRoomDatabase;
+        private final String mName;
+
+        public Factory(RedditDataRoomDatabase redditDataRoomDatabase, String name) {
+            mRedditDataRoomDatabase = redditDataRoomDatabase;
+            mName = name;
+        }
+
+        @NonNull
+        @Override
+        public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
+            //noinspection unchecked
+            return (T) new CommentFilterUsageViewModel(mRedditDataRoomDatabase, mName);
+        }
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/DeleteCommentFilterUsage.java b/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/DeleteCommentFilterUsage.java
new file mode 100644
index 00000000..69051515
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/DeleteCommentFilterUsage.java
@@ -0,0 +1,12 @@
+package ml.docilealligator.infinityforreddit.commentfilter;
+
+import java.util.concurrent.Executor;
+
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+
+public class DeleteCommentFilterUsage {
+    public static void deleteCommentFilterUsage(RedditDataRoomDatabase redditDataRoomDatabase, Executor executor,
+                                             CommentFilterUsage commentFilterUsage) {
+        executor.execute(() -> redditDataRoomDatabase.commentFilterUsageDao().deleteCommentFilterUsage(commentFilterUsage));
+    }
+}
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/SaveCommentFilterUsage.java b/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/SaveCommentFilterUsage.java
new file mode 100644
index 00000000..8060d9c0
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/commentfilter/SaveCommentFilterUsage.java
@@ -0,0 +1,12 @@
+package ml.docilealligator.infinityforreddit.commentfilter;
+
+import java.util.concurrent.Executor;
+
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+
+public class SaveCommentFilterUsage {
+    public static void saveCommentFilterUsage(RedditDataRoomDatabase redditDataRoomDatabase, Executor executor,
+                                           CommentFilterUsage commentFilterUsage) {
+        executor.execute(() -> redditDataRoomDatabase.commentFilterUsageDao().insert(commentFilterUsage));
+    }
+}