Added possibility to provide custom text controller

lib/src/annotation_editing_controller.dart

@@ -3,14 +3,19 @@ part of flutter_mentions;
 /// A custom implementation of [TextEditingController] to support @ mention or other
 /// trigger based mentions.
 class AnnotationEditingController extends TextEditingController {
-  Map<String, Annotation> _mapping;
+  Map<String, Annotation> _mapping = {};
   String? _pattern;
 
-  // Generate the Regex pattern for matching all the suggestions in one.
-  AnnotationEditingController(this._mapping)
-      : _pattern = _mapping.keys.isNotEmpty
-            ? "(${_mapping.keys.map((key) => RegExp.escape(key)).join('|')})"
-            : null;
+  void initialise(Map<String, Annotation> mapping) {
+    // Generate the Regex pattern for matching all the suggestions in one.
+    _mapping = mapping;
+    if (_mapping.keys.isNotEmpty) {
+      var result = _mapping.keys.map((key) => RegExp.escape(key)).toList();
+      result.sort((b, a) => a.toLowerCase().compareTo(b.toLowerCase()));
+      var finalresult = result.join('|');
+      _pattern = '($finalresult)(?![A-Za-z0-9_])';
+    }
+  }
 
   /// Can be used to get the markup from the controller directly.
   String get markupText {
@@ -51,11 +56,15 @@ class AnnotationEditingController extends TextEditingController {
   set mapping(Map<String, Annotation> _mapping) {
     this._mapping = _mapping;
 
-    _pattern = "(${_mapping.keys.map((key) => RegExp.escape(key)).join('|')})";
+    var result = _mapping.keys.map((key) => RegExp.escape(key)).toList();
+    result.sort((b, a) => a.toLowerCase().compareTo(b.toLowerCase()));
+    var finalresult = result.join('|');
+    _pattern = '($finalresult)(?![A-Za-z0-9_])';
   }
 
   @override
-  TextSpan buildTextSpan({BuildContext? context, TextStyle? style, bool? withComposing}) {
+  TextSpan buildTextSpan(
+      {BuildContext? context, TextStyle? style, bool? withComposing}) {
     var children = <InlineSpan>[];
 
     if (_pattern == null || _pattern == '()') {

lib/src/mention_view.dart

@@ -50,6 +50,7 @@ class FlutterMentions extends StatefulWidget {
     this.appendSpaceOnAdd = true,
     this.hideSuggestionList = false,
     this.onSuggestionVisibleChanged,
+    this.textController,
   }) : super(key: key);
 
   final bool hideSuggestionList;
@@ -241,6 +242,9 @@ class FlutterMentions extends StatefulWidget {
   /// {@macro flutter.services.autofill.autofillHints}
   final Iterable<String>? autofillHints;
 
+  /// Alternative for default text controller
+  final AnnotationEditingController? textController;
+
   @override
   FlutterMentionsState createState() => FlutterMentionsState();
 }
@@ -299,8 +303,7 @@ class FlutterMentionsState extends State<FlutterMentions> {
       _selectedMention = null;
     });
 
-    final _list = widget.mentions
-        .firstWhere((element) => selectedMention.str.contains(element.trigger));
+    final _list = _getSelectedMentionFromList();
 
     // find the text by range and replace with the new value.
     controller!.text = controller!.value.text.replaceRange(
@@ -336,10 +339,18 @@ class FlutterMentionsState extends State<FlutterMentions> {
       });
 
       final val = lengthMap.indexWhere((element) {
-        _pattern = widget.mentions.map((e) => e.trigger).join('|');
-
-        return element.end == cursorPos &&
+        _pattern = widget.mentions.map((e) {
+          if (e.trigger.contains(r'[')) {
+            return '\\${e.trigger}';
+          }
+          return e.trigger;
+        }).join('|');
+
+        var match = false;
+        match = element.end == cursorPos &&
             element.str.toLowerCase().contains(RegExp(_pattern));
+
+        return match;
       });
 
       showSuggestions.value = val != -1;
@@ -373,8 +384,12 @@ class FlutterMentionsState extends State<FlutterMentions> {
   @override
   void initState() {
     final data = mapToAnotation();
-
-    controller = AnnotationEditingController(data);
+    if (widget.textController != null) {
+      controller = widget.textController;
+    } else {
+      controller ??= AnnotationEditingController();
+    }
+    controller!.initialise(data);
 
     if (widget.defaultText != null) {
       controller!.text = widget.defaultText!;
@@ -392,7 +407,6 @@ class FlutterMentionsState extends State<FlutterMentions> {
   void dispose() {
     controller!.removeListener(suggestionListerner);
     controller!.removeListener(inputListeners);
-
     super.dispose();
   }
 
@@ -406,10 +420,7 @@ class FlutterMentionsState extends State<FlutterMentions> {
   @override
   Widget build(BuildContext context) {
     // Filter the list based on the selection
-    final list = _selectedMention != null
-        ? widget.mentions.firstWhere(
-            (element) => _selectedMention!.str.contains(element.trigger))
-        : widget.mentions[0];
+    final list = _getSelectedMentionFromList();
 
     return Container(
       child: PortalEntry(
@@ -489,4 +500,16 @@ class FlutterMentionsState extends State<FlutterMentions> {
       ),
     );
   }
+
+  Mention _getSelectedMentionFromList() {
+    return _selectedMention != null
+        ? widget.mentions.firstWhere((element) {
+            var trigger = element.trigger;
+            if (trigger.contains('\\')) {
+              trigger = trigger.substring(1);
+            }
+            return _selectedMention!.str.contains(trigger);
+          })
+        : widget.mentions[0];
+  }
 }

pubspec.lock

@@ -7,7 +7,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.6.1"
+    version: "2.8.1"
   boolean_selector:
     dependency: transitive
     description:
@@ -28,7 +28,7 @@ packages:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.1"
   clock:
     dependency: transitive
     description:
@@ -80,7 +80,7 @@ packages:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.7.0"
   path:
     dependency: transitive
     description:
@@ -134,7 +134,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.0"
+    version: "0.4.2"
   typed_data:
     dependency: transitive
     description: