Refactor code: isMobile function

lib/src/utils/platform_helper.dart

@@ -0,0 +1,3 @@
+import 'dart:io';
+
+bool isMobile() => Platform.isAndroid || Platform.isIOS;

lib/src/widgets/editor.dart

@@ -14,6 +14,7 @@ import '../models/documents/document.dart';
 import '../models/documents/nodes/container.dart' as container_node;
 import '../models/documents/nodes/leaf.dart' as leaf;
 import '../models/documents/nodes/line.dart';
+import '../utils/platform_helper.dart';
 import '../utils/string_helper.dart';
 import 'box.dart';
 import 'controller.dart';
@@ -163,8 +164,6 @@ String _standardizeImageUrl(String url) {
   return url;
 }
 
-bool _isMobile() => io.Platform.isAndroid || io.Platform.isIOS;
-
 Widget defaultEmbedBuilder(
     BuildContext context, leaf.Embed node, bool readOnly) {
   assert(!kIsWeb, 'Please provide EmbedBuilder for Web');
@@ -173,7 +172,7 @@ Widget defaultEmbedBuilder(
       final imageUrl = _standardizeImageUrl(node.value.data);
       var image;
       final style = node.style.attributes['style'];
-      if (_isMobile() && style != null) {
+      if (isMobile() && style != null) {
         final _attrs = parseKeyValuePairs(style.value.toString(),
             {'mobileWidth', 'mobileHeight', 'mobileMargin', 'mobileAlignment'});
         if (_attrs.isNotEmpty) {

lib/src/widgets/toolbar/image_video_utils.dart

@@ -6,6 +6,7 @@ import 'package:image_picker/image_picker.dart';
 
 import '../../models/documents/nodes/embed.dart';
 import '../../translations/toolbar.i18n.dart';
+import '../../utils/platform_helper.dart';
 import '../controller.dart';
 import '../toolbar.dart';
 
@@ -60,7 +61,7 @@ class ImageVideoUtils {
           'Please provide webImagePickImpl for Web '
           '(check out example directory for how to do it)');
       imageUrl = await webImagePickImpl!(onImagePickCallback);
-    } else if (_isMobile()) {
+    } else if (isMobile()) {
       imageUrl = await _pickImage(imageSource, onImagePickCallback);
     } else {
       assert(filePickImpl != null, 'Desktop must provide filePickImpl');
@@ -112,7 +113,7 @@ class ImageVideoUtils {
           'Please provide webVideoPickImpl for Web '
           '(check out example directory for how to do it)');
       videoUrl = await webVideoPickImpl!(onVideoPickCallback);
-    } else if (_isMobile()) {
+    } else if (isMobile()) {
       videoUrl = await _pickVideo(videoSource, onVideoPickCallback);
     } else {
       assert(filePickImpl != null, 'Desktop must provide filePickImpl');
@@ -125,8 +126,6 @@ class ImageVideoUtils {
     }
   }
 
-  static bool _isMobile() => Platform.isAndroid || Platform.isIOS;
-
   static Future<String?> _pickVideo(
       ImageSource source, OnVideoPickCallback onVideoPickCallback) async {
     final pickedFile = await ImagePicker().pickVideo(source: source);