flutter_html_iframe 3.0.0

This extension package allows the <iframe> tag to be rendered using the flutter_html package

flutter_html_iframe

Iframe widget for flutter_html.

This package renders iframes using the webview_flutter plugin.

When rendering iframes, the package considers the width, height, and sandbox attributes.

Sandbox controls the JavaScript mode of the webview - a value of null or allow-scripts will set javascriptMode: JavascriptMode.unrestricted, otherwise it will set javascriptMode: JavascriptMode.disabled.

Registering the IframeHtmlExtension:

Widget html = Html(
  extensions: {
    IframeHtmlExtension(),
  }
);

You can set the navigationDelegate of the webview with the navigationDelegate property on IframeHtmlExtension. This allows you to block or allow the loading of certain URLs.

NavigationDelegate example:

Widget html = Html(
  extensions: {
    IframeHtmlExtension(navigationDelegate: (NavigationRequest request) {
      if (request.url.contains("google.com/images")) {
        return NavigationDecision.prevent;
      } else {
        return NavigationDecision.navigate;
      }
    }),
  }
);