Remove horizontal line support

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

@@ -34,9 +34,6 @@ class Embeddable {
 class BlockEmbed extends Embeddable {
   const BlockEmbed(String type, String data) : super(type, data);
 
-  static const String horizontalRuleType = 'divider';
-  static BlockEmbed horizontalRule = const BlockEmbed(horizontalRuleType, 'hr');
-
   static const String imageType = 'image';
   static BlockEmbed image(String imageUrl) => BlockEmbed(imageType, imageUrl);
 

lib/src/widgets/toolbar.dart

@@ -15,7 +15,6 @@ import 'toolbar/history_button.dart';
 import 'toolbar/image_button.dart';
 import 'toolbar/image_video_utils.dart';
 import 'toolbar/indent_button.dart';
-import 'toolbar/insert_horizontal_line_button.dart';
 import 'toolbar/link_style_button.dart';
 import 'toolbar/select_alignment_button.dart';
 import 'toolbar/select_header_style_button.dart';
@@ -29,7 +28,6 @@ export 'toolbar/history_button.dart';
 export 'toolbar/image_button.dart';
 export 'toolbar/image_video_utils.dart';
 export 'toolbar/indent_button.dart';
-export 'toolbar/insert_horizontal_line_button.dart';
 export 'toolbar/link_style_button.dart';
 export 'toolbar/quill_dropdown_button.dart';
 export 'toolbar/quill_icon_button.dart';
@@ -97,7 +95,6 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
     bool showIndent = true,
     bool showLink = true,
     bool showHistory = true,
-    bool showHorizontalRule = false,
     bool multiRowsDisplay = true,
     bool showImageButton = true,
     bool showVideoButton = true,
@@ -147,7 +144,7 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
       showHeaderStyle,
       showListNumbers || showListBullets || showListCheck || showCodeBlock,
       showQuote || showIndent,
-      showLink || showHorizontalRule
+      showLink
     ];
 
     return QuillToolbar(
@@ -409,14 +406,6 @@ class QuillToolbar extends StatelessWidget implements PreferredSizeWidget {
             iconTheme: iconTheme,
             dialogTheme: dialogTheme,
           ),
-        if (showHorizontalRule)
-          // ignore: deprecated_member_use_from_same_package
-          InsertHorizontalLineButton(
-            controller: controller,
-            icon: Icons.horizontal_rule,
-            iconSize: toolbarIconSize,
-            iconTheme: iconTheme,
-          ),
       ],
     );
   }

lib/src/widgets/toolbar/insert_horizontal_line_button.dart

@@ -1,50 +0,0 @@
-import 'package:flutter/material.dart';
-
-import '../../models/documents/nodes/embed.dart';
-import '../../models/themes/quill_icon_theme.dart';
-import '../controller.dart';
-import '../toolbar.dart';
-
-@Deprecated('This is for horizontal line and not supported')
-class InsertHorizontalLineButton extends StatelessWidget {
-  const InsertHorizontalLineButton({
-    required this.controller,
-    required this.icon,
-    this.iconSize = kDefaultIconSize,
-    this.fillColor,
-    this.iconTheme,
-    Key? key,
-  }) : super(key: key);
-
-  final QuillController controller;
-  final IconData icon;
-  final double iconSize;
-  final Color? fillColor;
-  final QuillIconTheme? iconTheme;
-
-  @override
-  Widget build(BuildContext context) {
-    final theme = Theme.of(context);
-
-    final iconColor = iconTheme?.iconUnselectedColor ?? theme.iconTheme.color;
-    final iconFillColor =
-        iconTheme?.iconUnselectedFillColor ?? (fillColor ?? theme.canvasColor);
-
-    return QuillIconButton(
-      highlightElevation: 0,
-      hoverElevation: 0,
-      size: iconSize * kIconButtonFactor,
-      icon: Icon(
-        icon,
-        size: iconSize,
-        color: iconColor,
-      ),
-      fillColor: iconFillColor,
-      onPressed: () {
-        final index = controller.selection.baseOffset;
-        final length = controller.selection.extentOffset - index;
-        controller.replaceText(index, length, BlockEmbed.horizontalRule, null);
-      },
-    );
-  }
-}