/* -*- 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 "nsHashKeys.h"
#include "nsInterfaceHashtable.h"

#include "nsIDOMWindow.h"
#include "nsIObserver.h"

using namespace mozilla;

class nsXULAlerts {
  friend class nsXULAlertObserver;
public:
  nsXULAlerts()
  {
    mNamedWindows.Init();
  }

  virtual ~nsXULAlerts() {}

  nsresult ShowAlertNotification(const nsAString& aImageUrl, const nsAString& aAlertTitle,
                                 const nsAString& aAlertText, bool aAlertTextClickable,
                                 const nsAString& aAlertCookie, nsIObserver* aAlertListener,
                                 const nsAString& aAlertName, const nsAString& aBidi,
                                 const nsAString& aLang);

  nsresult CloseAlert(const nsAString& aAlertName);
protected:
  nsInterfaceHashtable<nsStringHashKey, nsIDOMWindow> mNamedWindows;
};

/**
 * 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_ISUPPORTS
  NS_DECL_NSIOBSERVER

  nsXULAlertObserver(nsXULAlerts* aXULAlerts, const nsAString& aAlertName,
                     nsIObserver* aObserver)
    : mXULAlerts(aXULAlerts), mAlertName(aAlertName),
      mObserver(aObserver) {}

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

  virtual ~nsXULAlertObserver() {}
protected:
  nsXULAlerts* mXULAlerts;
  nsString mAlertName;
  nsCOMPtr<nsIDOMWindow> mAlertWindow;
  nsCOMPtr<nsIObserver> mObserver;
};

#endif /* nsXULAlerts_h__ */

