From 193dd68ccc9439c0fa880ebe33c27b7e25b9bfec Mon Sep 17 00:00:00 2001
From: X Code <singerdmx@gmail.com>
Date: Thu, 23 Dec 2021 17:28:26 -0800
Subject: [PATCH] Revert "Implements StyledNode"

This reverts commit dfa623a4fdd477ad21a317bf14daaff93d530524.
---
 lib/src/models/documents/nodes/block.dart |  2 +-
 lib/src/models/documents/nodes/leaf.dart  |  2 +-
 lib/src/models/documents/nodes/line.dart  |  2 +-
 lib/src/models/documents/nodes/node.dart  | 27 +++++++++++++++++++++++
 4 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/lib/src/models/documents/nodes/block.dart b/lib/src/models/documents/nodes/block.dart
index c69d6a8f..095f1183 100644
--- a/lib/src/models/documents/nodes/block.dart
+++ b/lib/src/models/documents/nodes/block.dart
@@ -13,7 +13,7 @@ import 'node.dart';
 /// - Text Alignment
 /// - Text Direction
 /// - Code Block
-class Block extends Container<Line?> implements StyledNode {
+class Block extends Container<Line?> {
   /// Creates new unmounted [Block].
   @override
   Node newInstance() => Block();
diff --git a/lib/src/models/documents/nodes/leaf.dart b/lib/src/models/documents/nodes/leaf.dart
index 48817a10..3895fd62 100644
--- a/lib/src/models/documents/nodes/leaf.dart
+++ b/lib/src/models/documents/nodes/leaf.dart
@@ -7,7 +7,7 @@ import 'line.dart';
 import 'node.dart';
 
 /// A leaf in Quill document tree.
-abstract class Leaf extends Node implements StyledNode {
+abstract class Leaf extends Node {
   /// Creates a new [Leaf] with specified [data].
   factory Leaf(Object data) {
     if (data is Embeddable) {
diff --git a/lib/src/models/documents/nodes/line.dart b/lib/src/models/documents/nodes/line.dart
index b0977500..bccd7fb8 100644
--- a/lib/src/models/documents/nodes/line.dart
+++ b/lib/src/models/documents/nodes/line.dart
@@ -17,7 +17,7 @@ import 'node.dart';
 ///
 /// When a line contains an embed, it fully occupies the line, no other embeds
 /// or text nodes are allowed.
-class Line extends Container<Leaf?> implements StyledNode {
+class Line extends Container<Leaf?> {
   @override
   Leaf get defaultChild => Text();
 
diff --git a/lib/src/models/documents/nodes/node.dart b/lib/src/models/documents/nodes/node.dart
index 090c1ba8..8863138a 100644
--- a/lib/src/models/documents/nodes/node.dart
+++ b/lib/src/models/documents/nodes/node.dart
@@ -127,6 +127,33 @@ abstract class StyledNode implements Node {
   Style get style;
 }
 
+/// Mixin used by nodes that wish to implement [StyledNode] interface.
+abstract class StyledNodeMixin implements StyledNode {
+  @override
+  Style get style => _style;
+  @override
+  Style _style = Style();
+
+  /// Applies style [attribute] to this node.
+  @override
+  void applyAttribute(Attribute attribute) {
+    _style = _style.merge(attribute);
+  }
+
+  /// Applies new style [value] to this node. Provided [value] is merged
+  /// into current style.
+  @override
+  void applyStyle(Style value) {
+    _style = _style.mergeAll(value);
+  }
+
+  /// Clears style of this node.
+  @override
+  void clearStyle() {
+    _style = Style();
+  }
+}
+
 /// Root node of document tree.
 class Root extends Container<Container<Node?>> {
   @override