Displaying an iframe in Dart - dart

Question

Is it possible to display an iframe in Dart?
Below is the code that I am using
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
final wordPair = WordPair.random();
return MaterialApp(
title: 'Welcome to Flutter',
home: Scaffold(
appBar: AppBar(
title: Text('Welcome to Flutter'),
),
body: Center(
child: Text(wordPair.asPascalCase), // With this highlighted text.
),
),
);
}
}
I am not sure how to add an iframe into this. Below is the snippet that is given in the documentation
factory IFrameElement() => JS(
'returns:IFrameElement;creates:IFrameElement;new:true',
'#.createElement(#)',
document,
"iframe");

Answer 1

I agree that using webview_flutter plugin shows HTML in Flutter. But, this plugin is currently supported in mobile but not yet for web. Here is an example of how you implement this on mobile:
Sample code using webview_flutter plugin:
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'dart:async';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final Completer<WebViewController> _controller =
Completer<WebViewController>();
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: WebView(
initialUrl: 'https://flutter.dev/',
onWebViewCreated: (WebViewController webViewController) {
_controller.complete(webViewController);
},
javascriptMode: JavascriptMode.unrestricted,
),
);
}
}
Actual Output:
And regarding your question how to implement IFrameElement. There is actually an existing blog where it provides all the steps to understand this. But as mentioned, this is still in beta.
After I followed all the necessary steps, I've ended up in this example:
import 'package:flutter/material.dart';
import 'dart:ui' as ui;
import 'dart:html';
final Color darkBlue = Color.fromARGB(255, 18, 32, 47);
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData.dark().copyWith(scaffoldBackgroundColor: darkBlue),
debugShowCheckedModeBanner: false,
home: Scaffold(
body: Center(
child: IframeDemo(),
),
),
);
}
}
class IframeDemo extends StatefulWidget {
#override
State<StatefulWidget> createState() {
return MyWidget();
}
}
class MyWidget extends State<IframeDemo> {
String _url;
IFrameElement _iframeElement;
#override
initState() {
super.initState();
_url = 'https://flutter.dev/';
_iframeElement = IFrameElement()
..src = _url
..id = 'iframe'
..style.border = 'none';
//ignore: undefined_prefixed_name
ui.platformViewRegistry.registerViewFactory(
'iframeElement',
(int viewId) => _iframeElement,
);
}
#override
Widget build(BuildContext context) {
print('url is $_url');
return Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.center,
),
SizedBox(
height: 600,
width: 600,
child: HtmlElementView(
viewType: 'iframeElement',
),
),
],
);
}
}
Sample Output: