This API is available on Firefox OS for internal applications only.
The MozPowerManager
interface allows to explicitly control the part of the device that uses power.
Properties
MozPowerManager.screenEnabled
- This property allows to know if the device's screen is currently enabled (
true
). This property also controls the device's screen, so setting it tofalse
will turn off the screen. MozPowerManager.screenBrightness
- This property defines how bright the screen's backlight is, on a scale from 0 (very dim) to 1 (full brightness). Setting this attribute modifies the screen's brightness.
MozPowerManager.cpuSleepAllowed
- This property determines if the device's CPU will sleep after the screen is disabled. Setting this attribute to
false
will prevent the device from entering a suspend state.
Methods
MozPowerManager.addWakeLockListener()
- Register a handler to be called each time a resource changes its lock state.
MozPowerManager.factoryReset()
- Reset the device to its factory state (all the user data will be lost).
MozPowerManager.getWakeLockState()
- Return the current lock state of a given topic on the device.
MozPowerManager.powerOff()
- Shut off the device.
MozPowerManager.reboot()
- Completely shut down and boot the device.
MozPowerManager.removeWakeLockListener()
- Remove a handler previously set with
addWakeLockListener
.
Example
var screenTimeout; var power = window.navigator.mozPower; var powerAction = { unlocked: function suspendDevice() { power.cpuSleepAllowed = true;
power.screenEnabled = false; }, 'locked-background': function shutOffOnlyScreen() { power.cpuSleepAllowed = false;
power.screenEnabled = false; } } function screenLockListener(topic, state) { if ('screen' !== topic) return; window.clearTimeout(screenTimeout); if (powerAction[state]) { screenTimeout = window.setTimeout(powerAction[state], 3000); } } power.addWakeLockListener(screenLockListener);
Specification
Not part of any specification