feat: allow to delete the last note (#174)

* feat: allow to delete the last note

* fix: avoid inserting a note with null id

* fix: remove unused import

* fix: remove unnecessary call to getNotes

* fix: avoid wildcard imports

* feat: only display "delete note" menu option if the current note is not the empty default one

* fix: use getCurrentNoteViewText instead of value to check if note has text

* feat: allow deleting default empty note if more than 1 note exist

* docs(changelog): added feature to CHANGELOG.md

* style: break long line in two

* fix: refresh menu items when note was empty and is not anymore, or when it wasn't and now is

CHANGELOG.md

@@ -6,6 +6,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 ### Added
+- Option to delete the last open note ([#157])
 - Option to uncheck all checked items ([#156])
 
 ## [1.3.1] - 2025-07-12
@@ -64,6 +65,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#99]: https://github.com/FossifyOrg/Notes/issues/99
 [#110]: https://github.com/FossifyOrg/Notes/issues/110
 [#156]: https://github.com/FossifyOrg/Notes/issues/156
+[#157]: https://github.com/FossifyOrg/Notes/issues/157
 [#164]: https://github.com/FossifyOrg/Notes/issues/164
 [#178]: https://github.com/FossifyOrg/Notes/issues/178
 

app/src/main/kotlin/org/fossify/notes/activities/MainActivity.kt

@@ -147,6 +147,7 @@ class MainActivity : SimpleActivity() {
     private var searchIndex = 0
     private var searchMatches = emptyList<Int>()
     private var isSearchActive = false
+    private var wasNoteTextEmpty: Boolean = false
 
     private lateinit var searchQueryET: MyEditText
     private lateinit var searchPrevBtn: ImageView
@@ -252,6 +253,7 @@ class MainActivity : SimpleActivity() {
     private fun refreshMenuItems() {
         val multipleNotesExist = mNotes.size > 1
         val isCurrentItemChecklist = isCurrentItemChecklist()
+        val isDefaultEmptyNote = isDefaultEmptyNote()
 
         binding.mainToolbar.menu.apply {
             findItem(R.id.undo).apply {
@@ -266,7 +268,6 @@ class MainActivity : SimpleActivity() {
 
             findItem(R.id.rename_note).isVisible = multipleNotesExist
             findItem(R.id.open_note).isVisible = multipleNotesExist
-            findItem(R.id.delete_note).isVisible = multipleNotesExist
             findItem(R.id.open_search).isVisible = !isCurrentItemChecklist
             findItem(R.id.remove_done_items).isVisible = isCurrentItemChecklist
             findItem(R.id.uncheck_all_items).isVisible = isCurrentItemChecklist
@@ -278,6 +279,7 @@ class MainActivity : SimpleActivity() {
                 mNotes.isNotEmpty() && (::mCurrentNote.isInitialized && mCurrentNote.isLocked())
             findItem(R.id.more_apps_from_us).isVisible =
                 !resources.getBoolean(org.fossify.commons.R.bool.hide_google_relations)
+            findItem(R.id.delete_note).isVisible = !isDefaultEmptyNote || mNotes.size > 1
 
             saveNoteButton = findItem(R.id.save_note)
             saveNoteButton!!.isVisible =
@@ -399,6 +401,16 @@ class MainActivity : SimpleActivity() {
         }
     }
 
+    private fun isDefaultEmptyNote(): Boolean {
+        return if (::mCurrentNote.isInitialized) {
+            (mCurrentNote.title == getString(R.string.general_note) &&
+                getCurrentNoteText().isNullOrEmpty() &&
+                mCurrentNote.value.isEmpty())
+        } else {
+            false
+        }
+    }
+
     @SuppressLint("NewApi")
     private fun checkShortcuts() {
         val appIconColor = config.appIconColor
@@ -557,6 +569,7 @@ class MainActivity : SimpleActivity() {
 
             mNotes = notes
             mCurrentNote = mNotes[0]
+            wasNoteTextEmpty = mCurrentNote.value.isEmpty()
             mAdapter = NotesPagerAdapter(supportFragmentManager, mNotes, this)
             binding.viewPager.apply {
                 adapter = mAdapter
@@ -1339,7 +1352,7 @@ class MainActivity : SimpleActivity() {
     }
 
     fun deleteNote(deleteFile: Boolean, note: Note) {
-        if (mNotes.size <= 1 || note != mCurrentNote) {
+        if (mNotes.isEmpty() || note != mCurrentNote) {
             return
         }
 
@@ -1360,8 +1373,12 @@ class MainActivity : SimpleActivity() {
     private fun doDeleteNote(note: Note, deleteFile: Boolean) {
         ensureBackgroundThread {
             val currentNoteIndex = mNotes.indexOf(note)
-            val noteToRefresh =
+
+            val noteToRefresh = if (mNotes.size == 1) {
+                 null
+            } else {
                 mNotes[if (currentNoteIndex > 0) currentNoteIndex - 1 else currentNoteIndex + 1]
+            }
 
             notesDB.deleteNote(note)
             widgetsDB.deleteNoteWidgets(note.id!!)
@@ -1370,12 +1387,13 @@ class MainActivity : SimpleActivity() {
         }
     }
 
-    private fun refreshNotes(note: Note, deleteFile: Boolean) {
+    private fun refreshNotes(note: Note?, deleteFile: Boolean) {
         NotesHelper(this).getNotes {
             mNotes = it
-            val noteId = note.id
+            val currentNote = note ?: mNotes[0]
+            val noteId = currentNote.id
             updateSelectedNote(noteId!!)
-            if (config.widgetNoteId == note.id) {
+            if (config.widgetNoteId == currentNote.id) {
                 config.widgetNoteId = mCurrentNote.id!!
                 updateWidgets()
             }
@@ -1383,7 +1401,7 @@ class MainActivity : SimpleActivity() {
             initViewPager()
 
             if (deleteFile) {
-                deleteFile(FileDirItem(note.path, note.title)) {
+                deleteFile(FileDirItem(currentNote.path, currentNote.title)) {
                     if (!it) {
                         toast(org.fossify.commons.R.string.unknown_error_occurred)
                     }
@@ -1541,6 +1559,14 @@ class MainActivity : SimpleActivity() {
                 }
             }
 
+            if (getCurrentNoteText().isNullOrEmpty()) {
+                wasNoteTextEmpty = true
+                shouldRecreateMenu = true
+            } else if (wasNoteTextEmpty) {
+                wasNoteTextEmpty = false
+                shouldRecreateMenu = true
+            }
+
             if (shouldRecreateMenu) {
                 refreshMenuItems()
             }

app/src/main/kotlin/org/fossify/notes/helpers/NotesHelper.kt

@@ -3,7 +3,6 @@ package org.fossify.notes.helpers
 import android.content.Context
 import android.os.Handler
 import android.os.Looper
-import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import org.fossify.commons.activities.BaseSimpleActivity
 import org.fossify.commons.helpers.ExportResult
@@ -42,7 +41,8 @@ class NotesHelper(val context: Context) {
             if (notes.isEmpty()) {
                 val generalNote = context.resources.getString(R.string.general_note)
                 val note = Note(null, generalNote, "", NoteType.TYPE_TEXT, "", PROTECTION_NONE, "")
-                context.notesDB.insertOrUpdate(note)
+                val insertedId = context.notesDB.insertOrUpdate(note)
+                note.id = insertedId
                 notes.add(note)
             }