From 4208b05bb4db26cb5a57a20d0682f9f43c986b5a Mon Sep 17 00:00:00 2001
From: Vishesh Handa <me@vhanda.in>
Date: Tue, 19 May 2020 00:02:07 +0200
Subject: [PATCH] NoteEditor: Only enable 'Discard Changes' option if we have
 changes

Otherwise disable the button.
---
 lib/editors/checklist_editor.dart | 3 +++
 lib/editors/common.dart           | 3 +++
 lib/editors/journal_editor.dart   | 3 +++
 lib/editors/markdown_editor.dart  | 3 +++
 lib/editors/raw_editor.dart       | 3 +++
 5 files changed, 15 insertions(+)

diff --git a/lib/editors/checklist_editor.dart b/lib/editors/checklist_editor.dart
index 4db77c26..31486556 100644
--- a/lib/editors/checklist_editor.dart
+++ b/lib/editors/checklist_editor.dart
@@ -279,6 +279,9 @@ class ChecklistEditorState extends State<ChecklistEditor>
       _noteModified = true;
     });
   }
+
+  @override
+  bool get noteModified => _noteModified;
 }
 
 typedef TextChangedFunction = void Function(String);
diff --git a/lib/editors/common.dart b/lib/editors/common.dart
index bb075d7f..c3c8ae1c 100644
--- a/lib/editors/common.dart
+++ b/lib/editors/common.dart
@@ -26,6 +26,8 @@ abstract class Editor {
 abstract class EditorState {
   Note getNote();
   Future<void> addImage(File file);
+
+  bool get noteModified;
 }
 
 class EditorAppBar extends StatelessWidget implements PreferredSizeWidget {
@@ -214,6 +216,7 @@ Widget _buildBottomMenuSheet(
 
             editor.discardChangesSelected(note);
           },
+          enabled: editorState.noteModified,
         ),
         ListTile(
           leading: Icon(Icons.share),
diff --git a/lib/editors/journal_editor.dart b/lib/editors/journal_editor.dart
index ffeca4c7..68112215 100644
--- a/lib/editors/journal_editor.dart
+++ b/lib/editors/journal_editor.dart
@@ -123,6 +123,9 @@ class JournalEditorState extends State<JournalEditor> implements EditorState {
       _noteModified = true;
     });
   }
+
+  @override
+  bool get noteModified => _noteModified;
 }
 
 class _NoteBodyEditor extends StatelessWidget {
diff --git a/lib/editors/markdown_editor.dart b/lib/editors/markdown_editor.dart
index 61716b4e..d687847b 100644
--- a/lib/editors/markdown_editor.dart
+++ b/lib/editors/markdown_editor.dart
@@ -163,6 +163,9 @@ class MarkdownEditorState extends State<MarkdownEditor> implements EditorState {
       _noteModified = true;
     });
   }
+
+  @override
+  bool get noteModified => _noteModified;
 }
 
 class _NoteBodyEditor extends StatelessWidget {
diff --git a/lib/editors/raw_editor.dart b/lib/editors/raw_editor.dart
index b3e9b6f4..acd73d86 100644
--- a/lib/editors/raw_editor.dart
+++ b/lib/editors/raw_editor.dart
@@ -119,6 +119,9 @@ class RawEditorState extends State<RawEditor> implements EditorState {
       _noteModified = true;
     });
   }
+
+  @override
+  bool get noteModified => _noteModified;
 }
 
 class _NoteEditor extends StatelessWidget {