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/* -*- Mode: IDL; 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/. */

#include "nsISupports.idl"
#include "nsIObserver.idl"

interface imgIRequest;
interface nsICancelable;
interface nsIPrincipal;
interface nsIURI;

%{C++
#define ALERT_NOTIFICATION_CONTRACTID "@mozilla.org/alert-notification;1"
%}

[scriptable, uuid(a71a637d-de1d-47c6-a8d2-c60b2596f471)]
interface nsIAlertNotificationImageListener : nsISupports
{
  /**
   * Called when the image finishes loading.
   *
   * @param aUserData An opaque parameter passed to |loadImage|.
   * @param aRequest  The image request.
   */
  void onImageReady(in nsISupports aUserData, in imgIRequest aRequest);

  /**
   * Called if the alert doesn't have an image, or if the image request times
   * out or fails.
   *
   * @param aUserData An opaque parameter passed to |loadImage|.
   */
  void onImageMissing(in nsISupports aUserData);
};

[scriptable, uuid(cf2e4cb6-4b8f-4eca-aea9-d51a8f9f7a50)]
interface nsIAlertNotification : nsISupports
{
  /** Initializes an alert notification. */
  void init([optional] in AString aName,
            [optional] in AString aImageURL,
            [optional] in AString aTitle,
            [optional] in AString aText,
            [optional] in boolean aTextClickable,
            [optional] in AString aCookie,
            [optional] in AString aDir,
            [optional] in AString aLang,
            [optional] in AString aData,
            [optional] in nsIPrincipal aPrincipal,
            [optional] in boolean aInPrivateBrowsing,
            [optional] in boolean aRequireInteraction);

  /**
   * The name of the notification. On Android, the name is hashed and used as
   * a notification ID. Notifications will replace previous notifications with
   * the same name.
   */
  readonly attribute AString name;

  /**
   * A URL identifying the image to put in the alert. The OS X backend limits
   * the amount of time it will wait for the image to load to six seconds. After
   * that time, the alert will show without an image.
   */
  readonly attribute AString imageURL;

  /** The title for the alert. */
  readonly attribute AString title;

  /** The contents of the alert. */
  readonly attribute AString text;

  /**
   * Controls the click behavior. If true, the alert listener will be notified
   * when the user clicks on the alert.
   */
  readonly attribute boolean textClickable;

  /**
   * An opaque cookie that will be passed to the alert listener for each
   * callback.
   */
  readonly attribute AString cookie;

  /**
   * Bidi override for the title and contents. Valid values are "auto", "ltr",
   * or "rtl". Ignored if the backend doesn't support localization.
   */
  readonly attribute AString dir;

  /**
   * Language of the title and text. Ignored if the backend doesn't support
   * localization.
   */
  readonly attribute AString lang;

  /**
   * A Base64-encoded structured clone buffer containing data associated with
   * this alert. Only used for web notifications. Chrome callers should use a
   * cookie instead.
   */
  readonly attribute AString data;

  /**
   * The principal of the page that created the alert. Used for IPC security
   * checks, and to determine whether the alert is actionable.
   */
  readonly attribute nsIPrincipal principal;

  /**
   * The URI of the page that created the alert. |null| if the alert is not
   * actionable.
   */
  readonly attribute nsIURI URI;

  /**
   * Controls the image loading behavior. If true, the image request will be
   * loaded anonymously (without cookies or authorization tokens).
   */
  readonly attribute boolean inPrivateBrowsing;

  /**
   * Indicates that the notification should remain readily available until
   * the user activates or dismisses the notification.
   */
  readonly attribute boolean requireInteraction;

  /**
   * Indicates whether this alert should show the source string and action
   * buttons. False for system alerts (which can omit the principal), or
   * expanded, system, and null principals.
   */
  readonly attribute boolean actionable;

  /**
   * The host and port of the originating page, or an empty string if the alert
   * is not actionable.
   */
  readonly attribute AString source;

  /**
   * Loads the image associated with this alert.
   *
   * @param aTimeout  The number of milliseconds to wait before cancelling the
   *                  image request. If zero, there is no timeout.
   * @param aListener An |nsIAlertNotificationImageListener| implementation,
   *                  notified when the image loads. The listener is kept alive
   *                  until the request completes.
   * @param aUserData An opaque parameter passed to the listener's methods.
   *                  Not used by the libnotify backend, but the OS X backend
   *                  passes the pending notification.
   */
  nsICancelable loadImage(in unsigned long aTimeout,
                          in nsIAlertNotificationImageListener aListener,
                          [optional] in nsISupports aUserData);
};

[scriptable, uuid(f7a36392-d98b-4141-a7d7-4e46642684e3)]
interface nsIAlertsService : nsISupports
{
  void showPersistentNotification(in AString aPersistentData,
                                  in nsIAlertNotification aAlert,
                                  [optional] in nsIObserver aAlertListener);

  void showAlert(in nsIAlertNotification aAlert,
                 [optional] in nsIObserver aAlertListener);
  /**
   * Initializes and shows an |nsIAlertNotification| with the given parameters.
   *
   * @param aAlertListener Used for callbacks. May be null if the caller
   *                       doesn't care about callbacks.
   * @see nsIAlertNotification for descriptions of all other parameters.
   * @throws NS_ERROR_NOT_AVAILABLE If the notification cannot be displayed.
   *
   * The following arguments will be passed to the alertListener's observe()
   * method:
   *   subject - null
   *   topic   - "alertfinished" when the alert goes away
   *             "alertdisablecallback" when alerts should be disabled for the principal
   *             "alertsettingscallback" when alert settings should be opened
   *             "alertclickcallback" when the text is clicked
   *             "alertshow" when the alert is shown
   *   data    - the value of the cookie parameter passed to showAlertNotification.
   *
   * @note Depending on current circumstances (if the user's in a fullscreen
   *       application, for instance), the alert might not be displayed at all.
   *       In that case, if an alert listener is passed in it will receive the
   *       "alertfinished" notification immediately.
   */
  void showAlertNotification(in AString aImageURL,
                             in AString aTitle,
                             in AString aText,
                             [optional] in boolean aTextClickable,
                             [optional] in AString aCookie,
                             [optional] in nsIObserver aAlertListener,
                             [optional] in AString aName,
                             [optional] in AString aDir,
                             [optional] in AString aLang,
                             [optional] in AString aData,
                             [optional] in nsIPrincipal aPrincipal,
                             [optional] in boolean aInPrivateBrowsing,
                             [optional] in boolean aRequireInteraction);

  /**
   * Close alerts created by the service.
   *
   * @param aName          The name of the notification to close. If no name
   *                       is provided then only a notification created with
   *                       no name (if any) will be closed.
   */
  void closeAlert([optional] in AString aName,
                  [optional] in nsIPrincipal aPrincipal);

};

[scriptable, uuid(c5d63e3a-259d-45a8-b964-8377967cb4d2)]
interface nsIAlertsDoNotDisturb : nsISupports
{
  /**
   * Toggles a manual Do Not Disturb mode for the service to reduce the amount
   * of disruption that alerts cause the user.
   * This may mean only displaying them in a notification tray/center or not
   * displaying them at all. If a system backend already supports a similar
   * feature controlled by the user, enabling this may not have any impact on
   * code to show an alert. e.g. on OS X, the system will take care not
   * disrupting a user if we simply create a notification like usual.
   */
  attribute bool manualDoNotDisturb;
};

[scriptable, uuid(fc6d7f0a-0cf6-4268-8c71-ab640842b9b1)]
interface nsIAlertsIconData : nsISupports
{
  /**
   * Shows an alert with an icon. Web notifications use the favicon of the
   * page that created the alert. If the favicon is not in the Places database,
   * |aIconSize| will be zero.
  */
  void showAlertWithIconData(in nsIAlertNotification aAlert,
                             [optional] in nsIObserver aAlertListener,
                             [optional] in uint32_t aIconSize,
                             [const, array, size_is(aIconSize)] in uint8_t
                                                                aIconData);
};

[scriptable, uuid(f3c82915-bf60-41ea-91ce-6c46b22e381a)]
interface nsIAlertsIconURI : nsISupports
{
  /**
   * Shows an alert with an icon URI. Web notifications use |moz-anno:|
   * URIs to reference favicons from Places. If the page doesn't have a
   * favicon, |aIconURI| will be |null|.
   */
  void showAlertWithIconURI(in nsIAlertNotification aAlert,
                            [optional] in nsIObserver aAlertListener,
                            [optional] in nsIURI aIconURI);
};