gecko/dom/power/nsIDOMPowerManager.idl
2012-05-21 12:12:37 +01:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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"
interface nsIDOMMozWakeLockListener;
/**
* This interface implements navigator.mozPower
*/
[scriptable, uuid(256a3287-f528-45b5-9ba8-2b3650c056e6)]
interface nsIDOMMozPowerManager : nsISupports
{
void powerOff();
void reboot();
/**
* The listeners are notified when a resource changes its lock state to:
* - unlocked
* - locked but not visible
* - locked and visible
*/
void addWakeLockListener(in nsIDOMMozWakeLockListener aListener);
void removeWakeLockListener(in nsIDOMMozWakeLockListener aListener);
/**
* Query the wake lock state of the topic.
*
* Possible states are:
*
* - "unlocked" - nobody holds the wake lock.
*
* - "locked-foreground" - at least one window holds the wake lock,
* and it is visible.
*
* - "locked-background" - at least one window holds the wake lock,
* but all of them are hidden.
*
* @param aTopic The resource name related to the wake lock.
*/
DOMString getWakeLockState(in DOMString aTopic);
/**
* Is the device's screen currently enabled? This attribute controls the
* device's screen, so setting it to false will turn off the screen.
*/
attribute boolean screenEnabled;
/**
* How bright is the screen's backlight, on a scale from 0 (very dim) to 1
* (full brightness)? Setting this attribute modifies the screen's
* brightness.
*
* You can read and write this attribute even when the screen is disabled,
* but the backlight is off while the screen is disabled.
*
* If you write a value of X into this attribute, the attribute may not have
* the same value X when you later read it. Most screens don't support as
* many different brightness levels as there are doubles between 0 and 1, so
* we may reduce the value's precision before storing it.
*
* @throw NS_ERROR_INVALID_ARG if brightness is not in the range [0, 1].
*/
attribute double screenBrightness;
/**
* Is it possible that the device's CPU will sleep after the screen is
* disabled? Setting this attribute to false will prevent the device
* entering suspend state.
*/
attribute boolean cpuSleepAllowed;
};