Add toPlainText method to `EmbedBuilder` and Revert example (#1280)

example/lib/pages/home_page.dart

@@ -14,6 +14,7 @@ import 'package:path/path.dart';
 import 'package:path_provider/path_provider.dart';
 
 import '../universal_ui/universal_ui.dart';
+import '../widgets/time_stamp_embed_widget.dart';
 import 'read_only_page.dart';
 
 enum _SelectionType {
@@ -80,9 +81,24 @@ class _HomePageState extends State<HomePage> {
         ),
         actions: [
           IconButton(
-            onPressed: () => _addEditNote(context),
-            icon: const Icon(Icons.note_add),
+            onPressed: () => _insertTimeStamp(
+              _controller!,
+              DateTime.now().toString(),
+            ),
+            icon: const Icon(Icons.add_alarm_rounded),
           ),
+          IconButton(
+            onPressed: () => showDialog(
+              context: context,
+              builder: (context) => AlertDialog(
+                content: Text(_controller!.document.toPlainText([
+                  ...FlutterQuillEmbeds.builders(),
+                  TimeStampEmbedBuilderWidget()
+                ])),
+              ),
+            ),
+            icon: const Icon(Icons.text_fields_rounded),
+          )
         ],
       ),
       drawer: Container(
@@ -188,7 +204,7 @@ class _HomePageState extends State<HomePage> {
       ),
       embedBuilders: [
         ...FlutterQuillEmbeds.builders(),
-        NotesEmbedBuilder(addEditNote: _addEditNote)
+        TimeStampEmbedBuilderWidget()
       ],
     );
     if (kIsWeb) {
@@ -220,7 +236,7 @@ class _HomePageState extends State<HomePage> {
           ),
           embedBuilders: [
             ...defaultEmbedBuildersWeb,
-            NotesEmbedBuilder(addEditNote: _addEditNote),
+            TimeStampEmbedBuilderWidget()
           ]);
     }
     var toolbar = QuillToolbar.basic(
@@ -433,99 +449,41 @@ class _HomePageState extends State<HomePage> {
     return file.path.toString();
   }
 
-  Future<void> _addEditNote(BuildContext context, {Document? document}) async {
-    final isEditing = document != null;
-    final quillEditorController = QuillController(
-      document: document ?? Document(),
-      selection: const TextSelection.collapsed(offset: 0),
-    );
-
-    await showDialog(
-      context: context,
-      builder: (context) => AlertDialog(
-        titlePadding: const EdgeInsets.only(left: 16, top: 8),
-        title: Row(
-          mainAxisAlignment: MainAxisAlignment.spaceBetween,
-          children: [
-            Text('${isEditing ? 'Edit' : 'Add'} note'),
-            IconButton(
-              onPressed: () => Navigator.of(context).pop(),
-              icon: const Icon(Icons.close),
-            )
-          ],
-        ),
-        content: QuillEditor.basic(
-          controller: quillEditorController,
-          readOnly: false,
-        ),
+  static void _insertTimeStamp(QuillController controller, String string) {
+    controller.document.insert(controller.selection.extentOffset, '\n');
+    controller.updateSelection(
+      TextSelection.collapsed(
+        offset: controller.selection.extentOffset + 1,
       ),
+      ChangeSource.LOCAL,
     );
 
-    if (quillEditorController.document.isEmpty()) return;
-
-    final block = BlockEmbed.custom(
-      NotesBlockEmbed.fromDocument(quillEditorController.document),
+    controller.document.insert(
+      controller.selection.extentOffset,
+      TimeStampEmbed(string),
     );
-    final controller = _controller!;
-    final index = controller.selection.baseOffset;
-    final length = controller.selection.extentOffset - index;
-
-    if (isEditing) {
-      final offset =
-          getEmbedNode(controller, controller.selection.start).offset;
-      controller.replaceText(
-          offset, 1, block, TextSelection.collapsed(offset: offset));
-    } else {
-      controller.replaceText(index, length, block, null);
-    }
-  }
-}
 
-class NotesEmbedBuilder extends EmbedBuilder {
-  NotesEmbedBuilder({required this.addEditNote});
-
-  Future<void> Function(BuildContext context, {Document? document}) addEditNote;
+    controller.updateSelection(
+      TextSelection.collapsed(
+        offset: controller.selection.extentOffset + 1,
+      ),
+      ChangeSource.LOCAL,
+    );
 
-  @override
-  String get key => 'notes';
+    controller.document.insert(controller.selection.extentOffset, ' ');
+    controller.updateSelection(
+      TextSelection.collapsed(
+        offset: controller.selection.extentOffset + 1,
+      ),
+      ChangeSource.LOCAL,
+    );
 
-  @override
-  Widget build(
-    BuildContext context,
-    QuillController controller,
-    Embed node,
-    bool readOnly,
-    bool inline,
-    TextStyle textStyle,
-  ) {
-    final notes = NotesBlockEmbed(node.value.data).document;
-
-    return Material(
-      color: Colors.transparent,
-      child: ListTile(
-        title: Text(
-          notes.toPlainText().replaceAll('\n', ' '),
-          maxLines: 3,
-          overflow: TextOverflow.ellipsis,
-        ),
-        leading: const Icon(Icons.notes),
-        onTap: () => addEditNote(context, document: notes),
-        shape: RoundedRectangleBorder(
-          borderRadius: BorderRadius.circular(10),
-          side: const BorderSide(color: Colors.grey),
-        ),
+    controller.document.insert(controller.selection.extentOffset, '\n');
+    controller.updateSelection(
+      TextSelection.collapsed(
+        offset: controller.selection.extentOffset + 1,
       ),
+      ChangeSource.LOCAL,
     );
   }
 }
-
-class NotesBlockEmbed extends CustomBlockEmbed {
-  const NotesBlockEmbed(String value) : super(noteType, value);
-
-  static const String noteType = 'notes';
-
-  static NotesBlockEmbed fromDocument(Document document) =>
-      NotesBlockEmbed(jsonEncode(document.toDelta().toJson()));
-
-  Document get document => Document.fromJson(jsonDecode(data));
-}

example/lib/widgets/time_stamp_embed_widget.dart

@@ -0,0 +1,44 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_quill/flutter_quill.dart' hide Text;
+
+class TimeStampEmbed extends Embeddable {
+  const TimeStampEmbed(
+    String value,
+  ) : super(timeStampType, value);
+
+  static const String timeStampType = 'timeStamp';
+
+  static TimeStampEmbed fromDocument(Document document) =>
+      TimeStampEmbed(jsonEncode(document.toDelta().toJson()));
+
+  Document get document => Document.fromJson(jsonDecode(data));
+}
+
+class TimeStampEmbedBuilderWidget extends EmbedBuilder {
+  @override
+  String get key => 'timeStamp';
+
+  @override
+  String toPlainText(Embed embed) {
+    return embed.value.data;
+  }
+
+  @override
+  Widget build(
+    BuildContext context,
+    QuillController controller,
+    Embed node,
+    bool readOnly,
+    bool inline,
+    TextStyle textStyle,
+  ) {
+    return Row(
+      children: [
+        const Icon(Icons.access_time_rounded),
+        Text(node.value.data as String),
+      ],
+    );
+  }
+}

lib/src/models/documents/document.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import '../../widgets/embeds.dart';
 import '../quill_delta.dart';
 import '../rules/rule.dart';
 import '../structs/doc_change.dart';
@@ -349,7 +350,13 @@ class Document {
   }
 
   /// Returns plain text representation of this document.
-  String toPlainText() => _root.children.map((e) => e.toPlainText()).join();
+  String toPlainText([
+    Iterable<EmbedBuilder>? embedBuilders,
+    EmbedBuilder? unknownEmbedBuilder,
+  ]) =>
+      _root.children
+          .map((e) => e.toPlainText(embedBuilders, unknownEmbedBuilder))
+          .join();
 
   void _loadDocument(Delta doc) {
     if (doc.isEmpty) {

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

@@ -1,5 +1,6 @@
 import 'dart:collection';
 
+import '../../../widgets/embeds.dart';
 import '../style.dart';
 import 'leaf.dart';
 import 'line.dart';
@@ -103,7 +104,13 @@ abstract class Container<T extends Node?> extends Node {
   }
 
   @override
-  String toPlainText() => children.map((child) => child.toPlainText()).join();
+  String toPlainText([
+    Iterable<EmbedBuilder>? embedBuilders,
+    EmbedBuilder? unknownEmbedBuilder,
+  ]) =>
+      children
+          .map((e) => e.toPlainText(embedBuilders, unknownEmbedBuilder))
+          .join();
 
   /// Content length of this node's children.
   ///

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

@@ -1,5 +1,6 @@
 import 'dart:math' as math;
 
+import '../../../widgets/embeds.dart';
 import '../../quill_delta.dart';
 import '../style.dart';
 import 'embeddable.dart';
@@ -224,7 +225,11 @@ class Text extends Leaf {
   String get value => _value as String;
 
   @override
-  String toPlainText() => value;
+  String toPlainText([
+    Iterable<EmbedBuilder>? embedBuilders,
+    EmbedBuilder? unknownEmbedBuilder,
+  ]) =>
+      value;
 }
 
 /// An embed node inside of a line in a Quill document.
@@ -257,7 +262,26 @@ class Embed extends Leaf {
   // Embed nodes are represented as unicode object replacement character in
   // plain text.
   @override
-  String toPlainText() => kObjectReplacementCharacter;
+  String toPlainText([
+    Iterable<EmbedBuilder>? embedBuilders,
+    EmbedBuilder? unknownEmbedBuilder,
+  ]) {
+    final builders = embedBuilders;
+
+    if (builders != null) {
+      for (final builder in builders) {
+        if (builder.key == value.type) {
+          return builder.toPlainText(this);
+        }
+      }
+    }
+
+    if (unknownEmbedBuilder != null) {
+      return unknownEmbedBuilder.toPlainText(this);
+    }
+
+    return Embed.kObjectReplacementCharacter;
+  }
 
   @override
   String toString() => '${super.toString()} ${value.type}';

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

@@ -2,6 +2,7 @@ import 'dart:math' as math;
 
 import 'package:collection/collection.dart';
 
+import '../../../widgets/embeds.dart';
 import '../../quill_delta.dart';
 import '../../structs/offset_value.dart';
 import '../attribute.dart';
@@ -65,7 +66,11 @@ class Line extends Container<Leaf?> {
   }
 
   @override
-  String toPlainText() => '${super.toPlainText()}\n';
+  String toPlainText([
+    Iterable<EmbedBuilder>? embedBuilders,
+    EmbedBuilder? unknownEmbedBuilder,
+  ]) =>
+      '${super.toPlainText(embedBuilders, unknownEmbedBuilder)}\n';
 
   @override
   String toString() {

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

@@ -1,5 +1,6 @@
 import 'dart:collection';
 
+import '../../../widgets/embeds.dart';
 import '../../quill_delta.dart';
 import '../attribute.dart';
 import '../style.dart';
@@ -109,7 +110,10 @@ abstract class Node extends LinkedListEntry<Node> {
 
   Node newInstance();
 
-  String toPlainText();
+  String toPlainText([
+    Iterable<EmbedBuilder>? embedBuilders,
+    EmbedBuilder? unknownEmbedBuilder,
+  ]);
 
   Delta toDelta();
 

lib/src/widgets/embeds.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 
+import '../../extensions.dart';
 import '../models/documents/nodes/leaf.dart' as leaf;
 import '../models/themes/quill_dialog_theme.dart';
 import '../models/themes/quill_icon_theme.dart';
@@ -15,6 +16,8 @@ abstract class EmbedBuilder {
     return WidgetSpan(child: widget);
   }
 
+  String toPlainText(Embed node) => Embed.kObjectReplacementCharacter;
+
   Widget build(
     BuildContext context,
     QuillController controller,