Add markdown support for OpenNoteActivity

app/build.gradle

@@ -119,6 +119,7 @@ dependencies {
     implementation "androidx.media3:media3-ui:1.1.0"
     annotationProcessor 'androidx.room:room-compiler:2.6.1'
     implementation 'net.zetetic:android-database-sqlcipher:4.5.4'
+    implementation 'io.noties.markwon:core:4.6.2'
     testImplementation 'junit:junit:4.13.2'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.11.4'
     testImplementation 'org.junit.jupiter:junit-jupiter-params:5.11.4'

app/src/main/java/app/notesr/activity/note/DeleteNoteOnClick.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2026 zHd4
+ * SPDX-License-Identifier: MIT
+ */
+
+package app.notesr.activity.note;
+
+import static java.util.concurrent.Executors.newSingleThreadExecutor;
+
+import android.app.Dialog;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.view.MenuItem;
+
+import androidx.annotation.NonNull;
+
+import java.io.IOException;
+
+import app.notesr.R;
+import app.notesr.activity.ActivityBase;
+import app.notesr.activity.DialogFactory;
+import app.notesr.data.model.Note;
+import app.notesr.service.file.FileService;
+import app.notesr.service.note.NoteService;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public class DeleteNoteOnClick implements MenuItem.OnMenuItemClickListener {
+
+    private final ActivityBase activity;
+    private final Note note;
+    private final NoteService noteService;
+    private final FileService fileService;
+    private final DialogFactory dialogFactory;
+
+    @Override
+    public boolean onMenuItemClick(@NonNull MenuItem item) {
+        DialogInterface.OnClickListener buttonHandler = deleteNoteDialogOnClick();
+        dialogFactory.getThemedAlertDialogBuilder(R.layout.dialog_action_cannot_be_undo)
+                .setTitle(R.string.warning)
+                .setPositiveButton(R.string.delete, buttonHandler)
+                .setNegativeButton(R.string.no, buttonHandler)
+                .create()
+                .show();
+
+        return true;
+    }
+
+    private DialogInterface.OnClickListener deleteNoteDialogOnClick() {
+        return (dialog, result) -> {
+            if (result == DialogInterface.BUTTON_POSITIVE) {
+                Dialog progressDialog = dialogFactory
+                        .getThemedProgressDialog(R.layout.progress_dialog_deleting);
+
+                newSingleThreadExecutor().execute(() -> {
+                    activity.runOnUiThread(progressDialog::show);
+
+                    try {
+                        noteService.delete(note.getId(), fileService);
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    }
+
+                    activity.runOnUiThread(() -> {
+                        progressDialog.dismiss();
+                        activity.startActivity(new Intent(activity.getApplicationContext(),
+                                NotesListActivity.class));
+                    });
+                });
+            }
+        };
+    }
+}

app/src/main/java/app/notesr/activity/note/OpenFilesListOnClick.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2026 zHd4
+ * SPDX-License-Identifier: MIT
+ */
+
+package app.notesr.activity.note;
+
+import android.content.Intent;
+import android.view.MenuItem;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+
+import app.notesr.activity.ActivityBase;
+import app.notesr.activity.file.FilesListActivity;
+import app.notesr.data.model.Note;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public class OpenFilesListOnClick implements MenuItem.OnMenuItemClickListener, View.OnClickListener {
+
+    private final ActivityBase activity;
+    private final Note note;
+
+    @Override
+    public boolean onMenuItemClick(@NonNull MenuItem item) {
+        onClickAction();
+        return true;
+    }
+
+    @Override
+    public void onClick(View v) {
+        onClickAction();
+    }
+
+    private void onClickAction() {
+        Intent intent = new Intent(activity.getApplicationContext(), FilesListActivity.class);
+
+        intent.putExtra(FilesListActivity.EXTRA_NOTE_ID, note.getId());
+        activity.startActivity(intent);
+    }
+}