Method Detail

• onPaywallPresented

   Unit onPaywallPresented(String paywallId)

• onPaywallAction

   Unit onPaywallAction(String paywallId, String action)

• onPaywallPurchaseStarted

   Unit onPaywallPurchaseStarted(String paywallId, String productId)

• onPaywallPurchaseCompleted

   Unit onPaywallPurchaseCompleted(String paywallId, String productId, Map<String, Object> transaction)

• onPaywallPurchaseFailed

   Unit onPaywallPurchaseFailed(String paywallId, Throwable error, String errorType, String productId)

  A wrapper host cannot introspect error: it crosses the bridge as an opaque platform object, so a JS or Dart host could not tell a user cancel from a declined card from a dead network — and so could not decide whether a retry was even sensible. errorType is the stable discriminator (userCancelled | productNotFound | verificationFailed | networkError | serverError | pending | providerNotAvailable | unknown). productId is null only when no product was ever selected — a paywall selling two plans must say WHICH one failed.

• onPaywallRestoreStarted

   Unit onPaywallRestoreStarted(String paywallId)

• onPaywallRestoreCompleted

   Unit onPaywallRestoreCompleted(String paywallId, List<String> restoredProductIds)

• onPaywallRestoreFailed

   Unit onPaywallRestoreFailed(String paywallId, Throwable error)

• onPaywallDismissed

   Unit onPaywallDismissed(String paywallId)

• onPromoCodeSubmit

   Boolean onPromoCodeSubmit(String paywallId, String code)

  Validate a user-entered promo code. Return true to accept, false to reject. Routed via sync_callbacks; defaults to reject on no-delegate/timeout (SPEC-070-C §3.7).

• onPostPurchaseDeepLink

   Unit onPostPurchaseDeepLink(String paywallId, String url)

  Post-purchase: the SDK asks the host to open a deep-link URL.

• onPostPurchaseNextStep

   Unit onPostPurchaseNextStep(String paywallId)

  Post-purchase: the SDK asks the host to continue to the next onboarding step.