Refactor code

lib/src/models/documents/attribute.dart

@@ -89,6 +89,14 @@ class Attribute<T> {
 
   static final ScriptAttribute script = ScriptAttribute('');
 
+  static const String mobileWidth = 'mobileWidth';
+
+  static const String mobileHeight = 'mobileHeight';
+
+  static const String mobileMargin = 'mobileMargin';
+
+  static const String mobileAlignment = 'mobileAlignment';
+
   static final Set<String> inlineKeys = {
     Attribute.bold.key,
     Attribute.italic.key,

lib/src/utils/string.dart

@@ -1,5 +1,7 @@
 import 'package:flutter/cupertino.dart';
 
+import '../models/documents/attribute.dart';
+
 Map<String, String> parseKeyValuePairs(String s, Set<String> targetKeys) {
   final result = <String, String>{};
   final pairs = s.split(';');
@@ -29,8 +31,8 @@ String replaceStyleString(String s, double width, double height) {
     result[_key] = pair.substring(_index + 1).trim();
   }
 
-  result['mobileWidth'] = width.toString();
-  result['mobileHeight'] = height.toString();
+  result[Attribute.mobileWidth] = width.toString();
+  result[Attribute.mobileHeight] = height.toString();
   final sb = StringBuffer();
   for (final pair in result.entries) {
     sb

lib/src/widgets/embeds/default_embed_builder.dart

@@ -29,19 +29,24 @@ Widget defaultEmbedBuilder(BuildContext context, QuillController controller,
       var image;
       final style = node.style.attributes['style'];
       if (isMobile() && style != null) {
-        final _attrs = parseKeyValuePairs(style.value.toString(),
-            {'mobileWidth', 'mobileHeight', 'mobileMargin', 'mobileAlignment'});
+        final _attrs = parseKeyValuePairs(style.value.toString(), {
+          Attribute.mobileWidth,
+          Attribute.mobileHeight,
+          Attribute.mobileMargin,
+          Attribute.mobileAlignment
+        });
         if (_attrs.isNotEmpty) {
           assert(
-              _attrs['mobileWidth'] != null && _attrs['mobileHeight'] != null,
+              _attrs[Attribute.mobileWidth] != null &&
+                  _attrs[Attribute.mobileHeight] != null,
               'mobileWidth and mobileHeight must be specified');
-          final w = double.parse(_attrs['mobileWidth']!);
-          final h = double.parse(_attrs['mobileHeight']!);
+          final w = double.parse(_attrs[Attribute.mobileWidth]!);
+          final h = double.parse(_attrs[Attribute.mobileHeight]!);
           _widthHeight = Tuple2(w, h);
-          final m = _attrs['mobileMargin'] == null
+          final m = _attrs[Attribute.mobileMargin] == null
               ? 0.0
-              : double.parse(_attrs['mobileMargin']!);
-          final a = getAlignment(_attrs['mobileAlignment']);
+              : double.parse(_attrs[Attribute.mobileMargin]!);
+          final a = getAlignment(_attrs[Attribute.mobileAlignment]);
           image = Padding(
               padding: EdgeInsets.all(m),
               child: imageByUrl(imageUrl, width: w, height: h, alignment: a));