Fix tests & make selection optional is AutoFormatResult

packages/fleather/lib/src/widgets/autoformats.dart

@@ -72,7 +72,7 @@ class AutoFormats {
 
   /// Remove auto format from [document] and de-activate current suggestion
   /// It will throw if [_activeSuggestion] is null.
-  TextSelection undoActive(ParchmentDocument document) {
+  TextSelection? undoActive(ParchmentDocument document) {
     final undoSelection = _activeSuggestion!.undoSelection;
     document.compose(_activeSuggestion!.undo, ChangeSource.local);
     _activeSuggestion = null;
@@ -88,22 +88,24 @@ class AutoFormats {
 /// An auto format result
 class AutoFormatResult {
   AutoFormatResult({
-    required this.selection,
+    this.selection,
     required this.change,
-    required this.undoSelection,
+    this.undoSelection,
     required this.undo,
     required this.undoPositionCandidate,
     required this.keepTriggerCharacter,
   });
 
   /// The selection after applying the auto format
-  final TextSelection selection;
+  /// Optional
+  final TextSelection? selection;
 
   /// The change that was applied
   final Delta change;
 
   /// The selection after undoing the formatting
-  final TextSelection undoSelection;
+  /// Optional
+  final TextSelection? undoSelection;
 
   /// The changes to undo the formatting
   final Delta undo;
@@ -162,10 +164,8 @@ class _AutoFormatLinks extends AutoFormat {
       final undo = change.invert(documentDelta);
       document.compose(change, ChangeSource.local);
       return AutoFormatResult(
-          selection: TextSelection.collapsed(offset: position + 1),
           change: change,
           undo: undo,
-          undoSelection: TextSelection.collapsed(offset: position),
           keepTriggerCharacter: keepTriggerCharacter,
           undoPositionCandidate: position);
     } on FormatException {
@@ -391,9 +391,7 @@ class _AutoTextDirection extends AutoFormat {
     final undo = change.invert(documentDelta);
     document.compose(change, ChangeSource.local);
     return AutoFormatResult(
-        selection: TextSelection.collapsed(offset: position + data.length),
         change: change,
-        undoSelection: TextSelection.collapsed(offset: position),
         undo: undo,
         keepTriggerCharacter: keepTriggerCharacter,
         undoPositionCandidate: position);

packages/fleather/lib/src/widgets/controller.dart

@@ -187,7 +187,9 @@ class FleatherController extends ChangeNotifier {
       // Undo if deleting 1 character after retain of autoformat
       if (position == _autoFormats.undoPosition) {
         final undoSelection = _autoFormats.undoActive(document);
-        _updateSelectionSilent(undoSelection, source: ChangeSource.local);
+        if (undoSelection != null) {
+          _updateSelectionSilent(undoSelection, source: ChangeSource.local);
+        }
         return keepTriggerCharacter;
       }
     }

packages/fleather/test/widgets/autoformats_test.dart

@@ -15,7 +15,7 @@ void main() {
         {'insert': 'Some long text and a https://fleather-editor.github.io\n'}
       ]);
       final selection = autoformats.run(document, 54, ' ');
-      expect(selection, const TextSelection.collapsed(offset: 55));
+      expect(selection, isNull);
       final attributes = document.toDelta().toList()[1].attributes;
       expect(attributes, isNotNull);
       expect(attributes!.containsKey(ParchmentAttribute.link.key), isTrue);
@@ -28,7 +28,7 @@ void main() {
         {'insert': 'Some long text and a www.github.com\n'}
       ]);
       final selection = autoformats.run(document, 35, ' ');
-      expect(selection, const TextSelection.collapsed(offset: 36));
+      expect(selection, isNull);
       final attributes = document.toDelta().toList()[1].attributes;
       expect(attributes, isNotNull);
       expect(attributes!.containsKey(ParchmentAttribute.link.key), isTrue);
@@ -53,7 +53,7 @@ void main() {
       ]);
       autoformats.run(document, 54, ' ');
       final undoSelection = autoformats.undoActive(document);
-      expect(undoSelection, const TextSelection.collapsed(offset: 54));
+      expect(undoSelection, isNull);
       expect(document.toDelta().length, 1);
       expect(document.toDelta().first.isInsert, isTrue);
       expect(document.toDelta().first.data, text);
@@ -147,7 +147,7 @@ void main() {
         {'insert': 'some ltr text\nש\n'}
       ]);
       final selection = autoformats.run(document, 14, 'ש');
-      expect(selection, const TextSelection.collapsed(offset: 15));
+      expect(selection, isNull);
       final attributes = document.toDelta().toList()[1].attributes;
       expect(attributes, isNotNull);
       expect(attributes!.containsKey(ParchmentAttribute.direction.key), isTrue);