From ed1603afadaee71f87c4d995fa940ce425c43c56 Mon Sep 17 00:00:00 2001
From: Agnieszka C <85929121+Aga-C@users.noreply.github.com>
Date: Sun, 26 Sep 2021 19:15:34 +0200
Subject: [PATCH] Changed undo/redo visibility behavior (#427)

---
 .../notes/pro/activities/MainActivity.kt          | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/app/src/main/kotlin/com/simplemobiletools/notes/pro/activities/MainActivity.kt b/app/src/main/kotlin/com/simplemobiletools/notes/pro/activities/MainActivity.kt
index f6618754..ca1c24da 100644
--- a/app/src/main/kotlin/com/simplemobiletools/notes/pro/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/notes/pro/activities/MainActivity.kt
@@ -136,8 +136,17 @@ class MainActivity : SimpleActivity() {
     override fun onCreateOptionsMenu(menu: Menu): Boolean {
         menuInflater.inflate(R.menu.menu, menu)
         menu.apply {
-            findItem(R.id.undo).isVisible = showUndoButton && mCurrentNote.type == NoteType.TYPE_TEXT.value
-            findItem(R.id.redo).isVisible = showRedoButton && mCurrentNote.type == NoteType.TYPE_TEXT.value
+            val areButtonsVisible = (showRedoButton || showUndoButton) && mCurrentNote.type == NoteType.TYPE_TEXT.value
+            findItem(R.id.undo).apply {
+                isVisible = areButtonsVisible
+                isEnabled = showUndoButton && mCurrentNote.type == NoteType.TYPE_TEXT.value
+                icon.alpha = if (isEnabled) 255 else 127
+            }
+            findItem(R.id.redo).apply {
+                isVisible = areButtonsVisible
+                isEnabled = showRedoButton && mCurrentNote.type == NoteType.TYPE_TEXT.value
+                icon.alpha = if (isEnabled) 255 else 127
+            }
         }
 
         updateMenuItemColors(menu)
@@ -505,6 +514,8 @@ class MainActivity : SimpleActivity() {
         NotesHelper(this).insertOrUpdateNote(note) {
             val newNoteId = it
             showSaveButton = false
+            showUndoButton = false
+            showRedoButton = false
             initViewPager(newNoteId)
             updateSelectedNote(newNoteId)
             view_pager.onGlobalLayout {