// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module blink.mojom;

import "third_party/blink/public/mojom/content_extraction/ai_page_content_metadata.mojom";
import "url/mojom/url.mojom";

// An observer to be notified whenever metadata derived from the associated
// Document changes.
interface PaidContentMetadataObserver {
  // Called when the paid content metadata changes.  Clients should consider the
  // value to be unspecified (eg. document not loaded yet) until this method
  // is called.
  // This value is based solely on this frame's Document.
  OnPaidContentMetadataChanged(bool has_paid_content);
};

// An observer to be notified when meta tags change.
interface MetaTagsObserver {
  // Called when meta tags change.  This is based solely on this frame's
  // document.
  OnMetaTagsChanged(array<MetaTag> meta_tags);
};

// Allows observers in the browser to register to be notified whenever metadata
// derived from the associated Document changes.
interface FrameMetadataObserverRegistry {
  // Adds an observer to be notified whenever metadata derived from the
  // associated Document changes.
  AddPaidContentMetadataObserver(
      pending_remote<PaidContentMetadataObserver> observer);

  // Adds an observer to be notified whenever meta tags change.
  AddMetaTagsObserver(
      array<string> names, pending_remote<MetaTagsObserver> observer);
};