Re-implement WidgetPlaceholder.firstChild usage

Author: daohoangson

lib/src/widgets/html.dart

@@ -5,6 +5,9 @@ import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:flutter_widget_from_html/flutter_widget_from_html.dart';
+// ignore: implementation_imports
+import 'package:flutter_widget_from_html_core/src/internal/core_ops.dart'
+    show Priority;
 import 'package:fwfh_webview/fwfh_webview.dart';
 import 'package:html_unescape/html_unescape.dart';
 import 'package:http/http.dart';

lib/src/widgets/html/photo_compare.dart

@@ -15,18 +15,15 @@ class PhotoCompare {
             subTree.register(
               BuildOp(
                 onRenderBlock: (_, placeholder) {
-                  final child = placeholder.firstChild;
-                  if (child != null) {
-                    final value = tree.getNonInherited<_Images>();
-                    if (value == null) {
-                      tree.setNonInherited(_Images([child]));
-                    } else {
-                      value.widgets.add(child);
-                    }
+                  final value = tree.getNonInherited<_Images>();
+                  if (value == null) {
+                    tree.setNonInherited(_Images([placeholder]));
+                  } else {
+                    value.widgets.add(placeholder);
                   }
-                  return placeholder;
+                  return widget0;
                 },
-                priority: 5000000000000000, // Priority._baseBoxModel
+                priority: Priority.tagImg + 1,
               ),
             );
           }

pubspec.lock

@@ -438,7 +438,7 @@ packages:
     source: hosted
     version: "0.14.11"
   flutter_widget_from_html_core:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: flutter_widget_from_html_core
       sha256: "028f4989b9ff4907466af233d50146d807772600d98a3e895662fbdb09c39225"

pubspec.yaml

@@ -16,6 +16,7 @@ dependencies:
 
   # ours
   flutter_widget_from_html: ^0.14.11
+  flutter_widget_from_html_core: any
   fwfh_webview: any
   the_api:
     path: ./packages/api