/* -*- 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 nsXULAlerts_h__

#define nsXULAlerts_h__

#include "nsCycleCollectionParticipant.h"

#include "nsDataHashtable.h"

#include "nsHashKeys.h"

#include "nsInterfaceHashtable.h"

#include "mozIDOMWindow.h"

#include "nsIObserver.h"

struct PendingAlert

{

  void Init(nsIAlertNotification* aAlert, nsIObserver* aListener)

  {

    mAlert = aAlert;

    mListener = aListener;

  }

  nsCOMPtr<nsIAlertNotification> mAlert;

  nsCOMPtr<nsIObserver> mListener;

};

class nsXULAlerts : public nsIAlertsService,

                    public nsIAlertsDoNotDisturb,

                    public nsIAlertsIconURI

{

  friend class nsXULAlertObserver;

public:

  NS_DECL_NSIALERTSICONURI

  NS_DECL_NSIALERTSDONOTDISTURB

  NS_DECL_NSIALERTSSERVICE

  NS_DECL_ISUPPORTS

  nsXULAlerts()

  {

  }

  static already_AddRefed<nsXULAlerts> GetInstance();

protected:

  virtual ~nsXULAlerts() {}

  void PersistentAlertFinished();

  nsInterfaceHashtable<nsStringHashKey, mozIDOMWindowProxy> mNamedWindows;

  uint32_t mPersistentAlertCount = 0;

  nsTArray<PendingAlert> mPendingPersistentAlerts;

  bool mDoNotDisturb = false;

};

/**

 * This class wraps observers for alerts and watches

 * for the "alertfinished" event in order to release

 * the reference on the nsIDOMWindow of the XUL alert.

 */

class nsXULAlertObserver : public nsIObserver {

public:

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_NSIOBSERVER

  NS_DECL_CYCLE_COLLECTION_CLASS(nsXULAlertObserver)

  nsXULAlertObserver(nsXULAlerts* aXULAlerts, const nsAString& aAlertName,

                     nsIObserver* aObserver, bool aIsPersistent)

    : mXULAlerts(aXULAlerts), mAlertName(aAlertName),

      mObserver(aObserver), mIsPersistent(aIsPersistent) {}

  void SetAlertWindow(mozIDOMWindowProxy* aWindow) { mAlertWindow = aWindow; }

protected:

  virtual ~nsXULAlertObserver() {}

  RefPtr<nsXULAlerts> mXULAlerts;

  nsString mAlertName;

  nsCOMPtr<mozIDOMWindowProxy> mAlertWindow;

  nsCOMPtr<nsIObserver> mObserver;

  bool mIsPersistent;

};

#endif /* nsXULAlerts_h__ */