Refactor code

lib/utils/diff_delta.dart

@@ -2,6 +2,35 @@ import 'dart:math' as math;
 
 import 'package:quill_delta/quill_delta.dart';
 
+const Set<int> WHITE_SPACE = {
+  0x9,
+  0xA,
+  0xB,
+  0xC,
+  0xD,
+  0x1C,
+  0x1D,
+  0x1E,
+  0x1F,
+  0x20,
+  0xA0,
+  0x1680,
+  0x2000,
+  0x2001,
+  0x2002,
+  0x2003,
+  0x2004,
+  0x2005,
+  0x2006,
+  0x2007,
+  0x2008,
+  0x2009,
+  0x200A,
+  0x202F,
+  0x205F,
+  0x3000
+};
+
 // Diff between two texts - old text and new text
 class Diff {
   // Start index in old text at which changes begin.

lib/widgets/editor.dart

@@ -17,34 +17,21 @@ import 'cursor.dart';
 import 'delegate.dart';
 import 'keyboard_listener.dart';
 
-const Set<int> WHITE_SPACE = {
-  0x9,
-  0xA,
-  0xB,
-  0xC,
-  0xD,
-  0x1C,
-  0x1D,
-  0x1E,
-  0x1F,
-  0x20,
-  0xA0,
-  0x1680,
-  0x2000,
-  0x2001,
-  0x2002,
-  0x2003,
-  0x2004,
-  0x2005,
-  0x2006,
-  0x2007,
-  0x2008,
-  0x2009,
-  0x200A,
-  0x202F,
-  0x205F,
-  0x3000
-};
+abstract class EditorState extends State<RawEditor> {
+  TextEditingValue getTextEditingValue();
+
+  void setTextEditingValue(TextEditingValue value);
+
+  RenderEditor getRenderEditor();
+
+  EditorTextSelectionOverlay getSelectionOverlay();
+
+  bool showToolbar();
+
+  void hideToolbar();
+
+  void requestKeyboard();
+}
 
 abstract class RenderAbstractEditor {
   TextSelection selectWordAtPosition(TextPosition position);
@@ -1150,19 +1137,3 @@ class RenderEditableContainerBox extends RenderBox
         _resolvedPadding.top;
   }
 }
-
-abstract class EditorState extends State<RawEditor> {
-  TextEditingValue getTextEditingValue();
-
-  void setTextEditingValue(TextEditingValue value);
-
-  RenderEditor getRenderEditor();
-
-  EditorTextSelectionOverlay getSelectionOverlay();
-
-  bool showToolbar();
-
-  void hideToolbar();
-
-  void requestKeyboard();
-}