Added CustomBlockEmbed and customElementsEmbedBuilder (#877)

example/ios/Runner/Info.plist

@@ -43,5 +43,7 @@
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 </dict>
 </plist>

example/lib/pages/home_page.dart

@@ -61,7 +61,12 @@ class _HomePageState extends State<HomePage> {
         title: const Text(
           'Flutter Quill',
         ),
-        actions: [],
+        actions: [
+          IconButton(
+            onPressed: () => _addEditNote(context),
+            icon: const Icon(Icons.note_add),
+          ),
+        ],
       ),
       drawer: Container(
         constraints:
@@ -92,28 +97,30 @@ class _HomePageState extends State<HomePage> {
 
   Widget _buildWelcomeEditor(BuildContext context) {
     var quillEditor = QuillEditor(
-        controller: _controller!,
-        scrollController: ScrollController(),
-        scrollable: true,
-        focusNode: _focusNode,
-        autoFocus: false,
-        readOnly: false,
-        placeholder: 'Add content',
-        expands: false,
-        padding: EdgeInsets.zero,
-        customStyles: DefaultStyles(
-          h1: DefaultTextBlockStyle(
-              const TextStyle(
-                fontSize: 32,
-                color: Colors.black,
-                height: 1.15,
-                fontWeight: FontWeight.w300,
-              ),
-              const Tuple2(16, 0),
-              const Tuple2(0, 0),
-              null),
-          sizeSmall: const TextStyle(fontSize: 9),
-        ));
+      controller: _controller!,
+      scrollController: ScrollController(),
+      scrollable: true,
+      focusNode: _focusNode,
+      autoFocus: false,
+      readOnly: false,
+      placeholder: 'Add content',
+      expands: false,
+      padding: EdgeInsets.zero,
+      customStyles: DefaultStyles(
+        h1: DefaultTextBlockStyle(
+            const TextStyle(
+              fontSize: 32,
+              color: Colors.black,
+              height: 1.15,
+              fontWeight: FontWeight.w300,
+            ),
+            const Tuple2(16, 0),
+            const Tuple2(0, 0),
+            null),
+        sizeSmall: const TextStyle(fontSize: 9),
+      ),
+      customElementsEmbedBuilder: customElementsEmbedBuilder,
+    );
     if (kIsWeb) {
       quillEditor = QuillEditor(
           controller: _controller!,
@@ -304,4 +311,91 @@ class _HomePageState extends State<HomePage> {
       ),
     );
   }
+
+  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,
+        ),
+      ),
+    );
+
+    if (quillEditorController.document.isEmpty()) return;
+
+    final block = BlockEmbed.custom(
+      NotesBlockEmbed.fromDocument(quillEditorController.document),
+    );
+    final controller = _controller!;
+    final index = controller.selection.baseOffset;
+    final length = controller.selection.extentOffset - index;
+
+    if (isEditing) {
+      final offset = getEmbedNode(controller, controller.selection.start).item1;
+      controller.replaceText(
+          offset, 1, block, TextSelection.collapsed(offset: offset));
+    } else {
+      controller.replaceText(index, length, block, null);
+    }
+  }
+
+  Widget customElementsEmbedBuilder(
+    BuildContext context,
+    QuillController controller,
+    CustomBlockEmbed block,
+    bool readOnly,
+    void Function(GlobalKey videoContainerKey)? onVideoInit,
+  ) {
+    switch (block.type) {
+      case 'notes':
+        final notes = NotesBlockEmbed(block.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),
+            ),
+          ),
+        );
+      default:
+        return const SizedBox();
+    }
+  }
+}
+
+class NotesBlockEmbed extends CustomBlockEmbed {
+  const NotesBlockEmbed(String value) : super('notes', value);
+
+  static NotesBlockEmbed fromDocument(Document document) =>
+      NotesBlockEmbed(jsonEncode(document.toDelta().toJson()));
+
+  Document get document => Document.fromJson(jsonDecode(data));
 }

lib/flutter_quill.dart

@@ -9,6 +9,7 @@ export 'src/models/quill_delta.dart';
 export 'src/models/themes/quill_custom_icon.dart';
 export 'src/models/themes/quill_dialog_theme.dart';
 export 'src/models/themes/quill_icon_theme.dart';
+export 'src/utils/embeds.dart';
 export 'src/widgets/controller.dart';
 export 'src/widgets/default_styles.dart';
 export 'src/widgets/editor.dart';

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

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 /// An object which can be embedded into a Quill document.
 ///
 /// See also:
@@ -35,4 +37,19 @@ class BlockEmbed extends Embeddable {
 
   static const String videoType = 'video';
   static BlockEmbed video(String videoUrl) => BlockEmbed(videoType, videoUrl);
+
+  static const String customType = 'custom';
+  static BlockEmbed custom(CustomBlockEmbed customBlock) =>
+      BlockEmbed(customType, customBlock.toJsonString());
+}
+
+class CustomBlockEmbed extends BlockEmbed {
+  const CustomBlockEmbed(String type, String data) : super(type, data);
+
+  String toJsonString() => jsonEncode(toJson());
+
+  static CustomBlockEmbed fromJsonString(String data) {
+    final embeddable = Embeddable.fromJson(jsonDecode(data));
+    return CustomBlockEmbed(embeddable.type, embeddable.data);
+  }
 }

lib/src/translations/toolbar.i18n.dart

@@ -273,10 +273,10 @@ extension Localization on String {
           'Saved': 'Salvo',
           'Text': 'Texto',
           'What is entered is not a link': 'O link inserido não é válido',
-          'Resize': 'Resize',
-          'Width': 'Width',
-          'Height': 'Height',
-          'Size': 'Size',
+          'Resize': 'Redimencionar',
+          'Width': 'Largura',
+          'Height': 'Altura',
+          'Size': 'Tamanho',
         },
         'pl': {
           'Paste a link': 'Wklej link',

lib/src/utils/embeds.dart

@@ -0,0 +1,19 @@
+import 'dart:math';
+
+import 'package:tuple/tuple.dart';
+
+import '../../flutter_quill.dart';
+
+Tuple2<int, Embed> getEmbedNode(QuillController controller, int offset) {
+  var offset = controller.selection.start;
+  var imageNode = controller.queryNode(offset);
+  if (imageNode == null || !(imageNode is Embed)) {
+    offset = max(0, offset - 1);
+    imageNode = controller.queryNode(offset);
+  }
+  if (imageNode != null && imageNode is Embed) {
+    return Tuple2(offset, imageNode);
+  }
+
+  return throw 'Embed node not found by offset $offset';
+}

lib/src/widgets/delegate.dart

@@ -14,6 +14,14 @@ typedef EmbedBuilder = Widget Function(
   void Function(GlobalKey videoContainerKey)? onVideoInit,
 );
 
+typedef CustomEmbedBuilder = Widget Function(
+  BuildContext context,
+  QuillController controller,
+  CustomBlockEmbed block,
+  bool readOnly,
+  void Function(GlobalKey videoContainerKey)? onVideoInit,
+);
+
 typedef CustomStyleBuilder = TextStyle Function(Attribute attribute);
 
 /// Delegate interface for the [EditorTextSelectionGestureDetectorBuilder].

lib/src/widgets/editor.dart

@@ -11,6 +11,7 @@ import 'package:tuple/tuple.dart';
 
 import '../models/documents/document.dart';
 import '../models/documents/nodes/container.dart' as container_node;
+import '../models/documents/nodes/embeddable.dart';
 import '../models/documents/style.dart';
 import '../utils/platform.dart';
 import 'box.dart';
@@ -168,6 +169,7 @@ class QuillEditor extends StatefulWidget {
       this.onSingleLongTapMoveUpdate,
       this.onSingleLongTapEnd,
       this.embedBuilder = defaultEmbedBuilder,
+      this.customElementsEmbedBuilder,
       this.linkActionPickerDelegate = defaultLinkActionPickerDelegate,
       this.customStyleBuilder,
       this.locale,
@@ -340,6 +342,7 @@ class QuillEditor extends StatefulWidget {
       onSingleLongTapEnd;
 
   final EmbedBuilder embedBuilder;
+  final CustomEmbedBuilder? customElementsEmbedBuilder;
   final CustomStyleBuilder? customStyleBuilder;
 
   /// The locale to use for the editor toolbar, defaults to system locale
@@ -458,7 +461,32 @@ class QuillEditorState extends State<QuillEditor>
       keyboardAppearance: widget.keyboardAppearance,
       enableInteractiveSelection: widget.enableInteractiveSelection,
       scrollPhysics: widget.scrollPhysics,
-      embedBuilder: widget.embedBuilder,
+      embedBuilder: (
+        context,
+        controller,
+        node,
+        readOnly,
+        onVideoInit,
+      ) {
+        final customElementsEmbedBuilder = widget.customElementsEmbedBuilder;
+        final isCustomType = node.value.type == BlockEmbed.customType;
+        if (customElementsEmbedBuilder != null && isCustomType) {
+          return customElementsEmbedBuilder(
+            context,
+            controller,
+            CustomBlockEmbed.fromJsonString(node.value.data),
+            readOnly,
+            onVideoInit,
+          );
+        }
+        return widget.embedBuilder(
+          context,
+          controller,
+          node,
+          readOnly,
+          onVideoInit,
+        );
+      },
       linkActionPickerDelegate: widget.linkActionPickerDelegate,
       customStyleBuilder: widget.customStyleBuilder,
       floatingCursorDisabled: widget.floatingCursorDisabled,

lib/src/widgets/embeds/default_embed_builder.dart

@@ -8,6 +8,7 @@ import '../../models/documents/attribute.dart';
 import '../../models/documents/nodes/embeddable.dart';
 import '../../models/documents/nodes/leaf.dart' as leaf;
 import '../../translations/toolbar.i18n.dart';
+import '../../utils/embeds.dart';
 import '../../utils/platform.dart';
 import '../../utils/string.dart';
 import '../controller.dart';
@@ -79,7 +80,7 @@ Widget defaultEmbedBuilder(
                               final _screenSize = MediaQuery.of(context).size;
                               return ImageResizer(
                                   onImageResize: (w, h) {
-                                    final res = getImageNode(
+                                    final res = getEmbedNode(
                                         controller, controller.selection.start);
                                     final attr = replaceStyleString(
                                         getImageStyleString(controller), w, h);
@@ -99,7 +100,7 @@ Widget defaultEmbedBuilder(
                       text: 'Copy'.i18n,
                       onPressed: () {
                         final imageNode =
-                            getImageNode(controller, controller.selection.start)
+                            getEmbedNode(controller, controller.selection.start)
                                 .item2;
                         final imageUrl = imageNode.value.data;
                         controller.copiedImageUrl =
@@ -113,7 +114,7 @@ Widget defaultEmbedBuilder(
                       text: 'Remove'.i18n,
                       onPressed: () {
                         final offset =
-                            getImageNode(controller, controller.selection.start)
+                            getEmbedNode(controller, controller.selection.start)
                                 .item1;
                         controller.replaceText(offset, 1, '',
                             TextSelection.collapsed(offset: offset));

lib/src/widgets/embeds/image.dart

@@ -1,14 +1,11 @@
 import 'dart:convert';
 import 'dart:io' as io;
-import 'dart:math';
 
 import 'package:flutter/material.dart';
 import 'package:photo_view/photo_view.dart';
 import 'package:string_validator/string_validator.dart';
-import 'package:tuple/tuple.dart';
 
 import '../../models/documents/attribute.dart';
-import '../../models/documents/nodes/leaf.dart';
 import '../../models/documents/style.dart';
 import '../controller.dart';
 
@@ -26,20 +23,6 @@ bool isImageBase64(String imageUrl) {
   return !imageUrl.startsWith('http') && isBase64(imageUrl);
 }
 
-Tuple2<int, Embed> getImageNode(QuillController controller, int offset) {
-  var offset = controller.selection.start;
-  var imageNode = controller.queryNode(offset);
-  if (imageNode == null || !(imageNode is Embed)) {
-    offset = max(0, offset - 1);
-    imageNode = controller.queryNode(offset);
-  }
-  if (imageNode != null && imageNode is Embed) {
-    return Tuple2(offset, imageNode);
-  }
-
-  return throw 'Image node not found by offset $offset';
-}
-
 String getImageStyleString(QuillController controller) {
   final String? s = controller
       .getAllSelectionStyles()