Fix context menu anchor

packages/fleather/lib/src/rendering/editor.dart

@@ -60,6 +60,12 @@ abstract class RenderAbstractEditor implements TextLayoutMetrics {
       Offset lastBoundedOffset, TextPosition lastTextPosition,
       {double? resetLerpValue});
 
+  /// Tracks the position of a secondary tap event.
+  ///
+  /// Should be called before attempting to change the selection based on the
+  /// position of a secondary tap.
+  void handleSecondaryTapDown(TapDownDetails details);
+
   /// If [ignorePointer] is false (the default) then this method is called by
   /// the internal gesture recognizer's [TapGestureRecognizer.onTapDown]
   /// callback.
@@ -187,6 +193,9 @@ class RenderEditor extends RenderEditableContainerBox
     markNeedsLayout();
   }
 
+  Offset? _lastSecondaryTapDownPosition;
+  Offset? get lastSecondaryTapDownPosition => _lastSecondaryTapDownPosition;
+
   /// The region of text that is selected, if any.
   ///
   /// The caret position is represented by a collapsed selection.
@@ -418,6 +427,12 @@ class RenderEditor extends RenderEditableContainerBox
   // by dragging
   TextSelection? _extendSelectionOrigin;
 
+  @override
+  void handleSecondaryTapDown(TapDownDetails details) {
+    _lastTapDownPosition = details.globalPosition;
+    _lastSecondaryTapDownPosition = details.globalPosition;
+  }
+
   @override
   void handleTapDown(TapDownDetails details) {
     _lastTapDownPosition = details.globalPosition;

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

@@ -1628,6 +1628,10 @@ class RawEditorState extends EditorState
   /// Returns the anchor points for the default context menu.
   @override
   TextSelectionToolbarAnchors get contextMenuAnchors {
+    if (renderEditor.lastSecondaryTapDownPosition != null) {
+      return TextSelectionToolbarAnchors(
+          primaryAnchor: renderEditor.lastSecondaryTapDownPosition!);
+    }
     final selection = textEditingValue.selection;
     // Find the horizontal midpoint, just above the selected text.
     final List<TextSelectionPoint> endpoints =

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

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-
 import 'dart:math' as math;
 
 import 'package:flutter/foundation.dart';
@@ -599,14 +598,12 @@ class EditorTextSelectionGestureDetectorBuilder {
   @protected
   final EditorTextSelectionGestureDetectorBuilderDelegate delegate;
 
-  Offset? _lastSecondaryTapDownPosition;
-
   /// Returns true if lastSecondaryTapDownPosition was on selection.
   bool get _lastSecondaryTapWasOnSelection {
-    assert(_lastSecondaryTapDownPosition != null);
+    assert(renderEditor.lastSecondaryTapDownPosition != null);
 
-    final TextPosition textPosition =
-        renderEditor.getPositionForOffset(_lastSecondaryTapDownPosition!);
+    final TextPosition textPosition = renderEditor
+        .getPositionForOffset(renderEditor.lastSecondaryTapDownPosition!);
 
     return renderEditor.selection.start <= textPosition.offset &&
         renderEditor.selection.end >= textPosition.offset;
@@ -1159,7 +1156,8 @@ class EditorTextSelectionGestureDetectorBuilder {
     // vs [TapGestureRecognizer.onSecondaryTapUp] instead of having to track state in
     // renderEditor. When this migration is complete we should remove this hack.
     // See https://github.com/flutter/flutter/issues/115130.
-    _lastSecondaryTapDownPosition = details.globalPosition;
+    renderEditor.handleSecondaryTapDown(
+        TapDownDetails(globalPosition: details.globalPosition));
     _shouldShowSelectionToolbar = true;
   }