/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_extensions_DocumentObserver_h

#define mozilla_extensions_DocumentObserver_h

#include "mozilla/dom/BindingDeclarations.h"

#include "mozilla/dom/MozDocumentObserverBinding.h"

#include "mozilla/extensions/WebExtensionContentScript.h"

class nsILoadInfo;

class nsPIDOMWindowOuter;

namespace mozilla {

namespace extensions {

class DocumentObserver final : public nsISupports

                             , public nsWrapperCache

{

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DocumentObserver)

  static already_AddRefed<DocumentObserver>

  Constructor(dom::GlobalObject& aGlobal,

              dom::MozDocumentCallback& aCallbacks,

              ErrorResult& aRv);

  void Observe(const dom::Sequence<OwningNonNull<MozDocumentMatcher>>& matchers, ErrorResult& aRv);

  void Disconnect();

  const nsTArray<RefPtr<MozDocumentMatcher>>& Matchers() const { return mMatchers; }

  void NotifyMatch(MozDocumentMatcher& aMatcher, nsPIDOMWindowOuter* aWindow);

  void NotifyMatch(MozDocumentMatcher& aMatcher, nsILoadInfo* aLoadInfo);

  nsISupports* GetParentObject() const { return mParent; }

  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;

protected:

  virtual ~DocumentObserver() = default;

private:

  explicit DocumentObserver(nsISupports* aParent, dom::MozDocumentCallback& aCallbacks)

    : mParent(aParent)

    , mCallbacks(&aCallbacks)

  {}

  nsCOMPtr<nsISupports> mParent;

  RefPtr<dom::MozDocumentCallback> mCallbacks;

  nsTArray<RefPtr<MozDocumentMatcher>> mMatchers;

};

} // namespace extensions

} // namespace mozilla

#endif // mozilla_extensions_DocumentObserver_h