shouldInterceptAjaxRequest property Null safety

(Future<AjaxRequest?> Function?(InAppWebViewController controller, AjaxRequest ajaxRequest)?) shouldInterceptAjaxRequest
final

Event fired when an XMLHttpRequest is sent to a server. It gives the host application a chance to take control over the request before sending it.

ajaxRequest represents the XMLHttpRequest.

NOTE: In order to be able to listen this event, you need to set InAppWebViewOptions.useShouldInterceptAjaxRequest option to true. Also, unlike iOS that has WKUserScript that can inject javascript code right after the document element is created but before any other content is loaded, in Android the javascript code used to intercept ajax requests is loaded as soon as possible so it won't be instantaneous as iOS but just after some milliseconds (< ~100ms). Inside the window.addEventListener("flutterInAppWebViewPlatformReady") event, the ajax requests will be intercept for sure.

Implementation

final Future<AjaxRequest?> Function(
        InAppWebViewController controller, AjaxRequest ajaxRequest)?
    shouldInterceptAjaxRequest;