CheckoutWebView class

A widget that opens a WebView for a payment checkout flow.

It loads the given checkoutUrl and monitors navigation events. When the page navigates to returnDeepLink, the onReturn callback is invoked with the full Uri. The widget then automatically pops itself from the navigation stack.

This is commonly used for handling PhonePe (or other PSP) checkout flows where the provider redirects back to your app via a deep link.

Example:

await Navigator.of(context).push(
  MaterialPageRoute(
    builder: (_) => CheckoutWebView(
      checkoutUrl: 'https://example.com/pay',
      returnDeepLink: 'myapp://payment-return',
      onReturn: (uri) {
        final status = uri.queryParameters['status'];
        debugPrint('Returned with status: $status');
      },
    ),
  ),
);