Embed object toPlainText is empty string and length is 0

lib/src/models/documents/nodes/leaf.dart

@@ -40,8 +40,8 @@ abstract class Leaf extends Node {
     if (_value is String) {
       return (_value as String).length;
     }
-    // return 1 for embedded object
-    return 1;
+    // return 0 for embedded object
+    return 0;
   }
 
   @override
@@ -257,5 +257,8 @@ class Embed extends Leaf {
   // Embed nodes are represented as unicode object replacement character in
   // plain text.
   @override
-  String toPlainText() => kObjectReplacementCharacter;
+  String toPlainText() => '';
+
+  @override
+  String toString() => kObjectReplacementCharacter;
 }

lib/src/models/documents/nodes/line.dart

@@ -393,17 +393,12 @@ class Line extends Container<Leaf?> {
     final data = queryChild(offset, true);
     var node = data.node as Leaf?;
     if (node != null) {
-      var pos = 0;
-      if (node is Text) {
-        pos = node.length - data.offset;
-        result.add(Tuple2(beg, node.style));
-      }
+      var pos = node.length - data.offset;
+      result.add(Tuple2(beg, node.style));
       while (!node!.isLast && pos < local) {
         node = node.next as Leaf;
-        if (node is Text) {
-          result.add(Tuple2(pos + beg, node.style));
-          pos += node.length;
-        }
+        result.add(Tuple2(pos + beg, node.style));
+        pos += node.length;
       }
     }
 
@@ -458,31 +453,23 @@ class Line extends Container<Leaf?> {
     if (res.length == 1) {
       final data = queryChild(offset, true);
       final text = res.single.item2;
-      return text == Embed.kObjectReplacementCharacter
-          ? ''
-          : text.substring(data.offset, data.offset + len);
+      return text.substring(data.offset, data.offset + len);
     }
 
     final total = <String>[];
     // Adjust first node
     final firstNodeLen = res[1].item1;
     var text = res[0].item2;
-    if (text != Embed.kObjectReplacementCharacter) {
-      total.add(text.substring(text.length - firstNodeLen));
-    }
+    total.add(text.substring(text.length - firstNodeLen));
 
     for (var i = 1; i < res.length - 1; i++) {
-      if (res[i].item2 != Embed.kObjectReplacementCharacter) {
-        total.add(res[i].item2);
-      }
+      total.add(res[i].item2);
     }
 
     // Adjust last node
     final lastNodeLen = len - res[res.length - 1].item1;
     text = res[res.length - 1].item2;
-    if (text != Embed.kObjectReplacementCharacter) {
-      total.add(text.substring(0, lastNodeLen));
-    }
+    total.add(text.substring(0, lastNodeLen));
     return total.join();
   }
 

lib/src/widgets/raw_editor/raw_editor_state_selection_delegate_mixin.dart

@@ -3,7 +3,6 @@ import 'dart:math' as math;
 import 'package:flutter/rendering.dart';
 import 'package:flutter/widgets.dart';
 
-import '../../models/documents/nodes/leaf.dart';
 import '../../utils/delta.dart';
 import '../editor.dart';
 
@@ -20,7 +19,7 @@ mixin RawEditorStateSelectionDelegateMixin on EditorState
     final oldText = widget.controller.document.toPlainText();
     final newText = value.text;
     final diff = getDiff(oldText, newText, cursorPosition);
-    final insertedText = _adjustInsertedText(diff.inserted);
+    final insertedText = diff.inserted;
 
     widget.controller.replaceText(
         diff.start, diff.deleted.length, insertedText, value.selection);
@@ -40,24 +39,6 @@ mixin RawEditorStateSelectionDelegateMixin on EditorState
     }
   }
 
-  String _adjustInsertedText(String text) {
-    // For clip from editor, it may contain image, a.k.a 65532 or '\uFFFC'.
-    // For clip from browser, image is directly ignore.
-    // Here we skip image when pasting.
-    if (!text.codeUnits.contains(Embed.kObjectReplacementInt)) {
-      return text;
-    }
-
-    final sb = StringBuffer();
-    for (var i = 0; i < text.length; i++) {
-      if (text.codeUnitAt(i) == Embed.kObjectReplacementInt) {
-        continue;
-      }
-      sb.write(text[i]);
-    }
-    return sb.toString();
-  }
-
   @override
   void bringIntoView(TextPosition position) {
     final localRect = renderEditor.getLocalRectForCaret(position);