Safe Haskell	None
Language	Haskell2010

System.Information.Battery

Contents

Types
Accessors

Description

This is a simple library to query the Linux UPower daemon (via DBus) for battery information. Currently, it only retrieves information for the first battery it finds.

Synopsis

Types

data BatteryContext Source #

An opaque wrapper around some internal library state

data BatteryInfo Source #

There are a few fields supported by UPower that aren't exposed here.. could be easily.

Constructors

BatteryInfo

Fields

batteryNativePath :: Text
batteryVendor :: Text
batteryModel :: Text
batterySerial :: Text
batteryType :: BatteryType
batteryPowerSupply :: Bool
batteryHasHistory :: Bool
batteryHasStatistics :: Bool
batteryOnline :: Bool
batteryEnergy :: Double
batteryEnergyEmpty :: Double
batteryEnergyFull :: Double
batteryEnergyFullDesign :: Double
batteryEnergyRate :: Double
batteryVoltage :: Double
batteryTimeToEmpty :: Int64
batteryTimeToFull :: Int64
batteryPercentage :: Double
batteryIsPresent :: Bool
batteryState :: BatteryState
batteryIsRechargable :: Bool
batteryCapacity :: Double
batteryTechnology :: BatteryTechnology

data BatteryState Source #

Constructors

BatteryStateUnknown
BatteryStateCharging
BatteryStateDischarging
BatteryStateEmpty
BatteryStateFullyCharged
BatteryStatePendingCharge
BatteryStatePendingDischarge

Instances

Enum BatteryState Source #
Methods succ :: BatteryState -> BatteryState # pred :: BatteryState -> BatteryState # toEnum :: Int -> BatteryState # fromEnum :: BatteryState -> Int # enumFrom :: BatteryState -> [BatteryState] # enumFromThen :: BatteryState -> BatteryState -> [BatteryState] # enumFromTo :: BatteryState -> BatteryState -> [BatteryState] # enumFromThenTo :: BatteryState -> BatteryState -> BatteryState -> [BatteryState] #
Eq BatteryState Source #
Methods (==) :: BatteryState -> BatteryState -> Bool # (/=) :: BatteryState -> BatteryState -> Bool #
Ord BatteryState Source #
Methods compare :: BatteryState -> BatteryState -> Ordering # (<) :: BatteryState -> BatteryState -> Bool # (<=) :: BatteryState -> BatteryState -> Bool # (>) :: BatteryState -> BatteryState -> Bool # (>=) :: BatteryState -> BatteryState -> Bool # max :: BatteryState -> BatteryState -> BatteryState # min :: BatteryState -> BatteryState -> BatteryState #
Show BatteryState Source #
Methods showsPrec :: Int -> BatteryState -> ShowS # show :: BatteryState -> String # showList :: [BatteryState] -> ShowS #

data BatteryTechnology Source #

Constructors

BatteryTechnologyUnknown
BatteryTechnologyLithiumIon
BatteryTechnologyLithiumPolymer
BatteryTechnologyLithiumIronPhosphate
BatteryTechnologyLeadAcid
BatteryTechnologyNickelCadmium
BatteryTechnologyNickelMetalHydride

Instances

Enum BatteryTechnology Source #
Methods succ :: BatteryTechnology -> BatteryTechnology # pred :: BatteryTechnology -> BatteryTechnology # toEnum :: Int -> BatteryTechnology # fromEnum :: BatteryTechnology -> Int # enumFrom :: BatteryTechnology -> [BatteryTechnology] # enumFromThen :: BatteryTechnology -> BatteryTechnology -> [BatteryTechnology] # enumFromTo :: BatteryTechnology -> BatteryTechnology -> [BatteryTechnology] # enumFromThenTo :: BatteryTechnology -> BatteryTechnology -> BatteryTechnology -> [BatteryTechnology] #
Eq BatteryTechnology Source #
Methods (==) :: BatteryTechnology -> BatteryTechnology -> Bool # (/=) :: BatteryTechnology -> BatteryTechnology -> Bool #
Ord BatteryTechnology Source #
Methods compare :: BatteryTechnology -> BatteryTechnology -> Ordering # (<) :: BatteryTechnology -> BatteryTechnology -> Bool # (<=) :: BatteryTechnology -> BatteryTechnology -> Bool # (>) :: BatteryTechnology -> BatteryTechnology -> Bool # (>=) :: BatteryTechnology -> BatteryTechnology -> Bool # max :: BatteryTechnology -> BatteryTechnology -> BatteryTechnology # min :: BatteryTechnology -> BatteryTechnology -> BatteryTechnology #
Show BatteryTechnology Source #
Methods showsPrec :: Int -> BatteryTechnology -> ShowS # show :: BatteryTechnology -> String # showList :: [BatteryTechnology] -> ShowS #

data BatteryType Source #

Constructors

BatteryTypeUnknown
BatteryTypeLinePower
BatteryTypeBatteryType
BatteryTypeUps
BatteryTypeMonitor
BatteryTypeMouse
BatteryTypeKeyboard
BatteryTypePda
BatteryTypePhone

Instances

Enum BatteryType Source #
Methods succ :: BatteryType -> BatteryType # pred :: BatteryType -> BatteryType # toEnum :: Int -> BatteryType # fromEnum :: BatteryType -> Int # enumFrom :: BatteryType -> [BatteryType] # enumFromThen :: BatteryType -> BatteryType -> [BatteryType] # enumFromTo :: BatteryType -> BatteryType -> [BatteryType] # enumFromThenTo :: BatteryType -> BatteryType -> BatteryType -> [BatteryType] #
Eq BatteryType Source #
Methods (==) :: BatteryType -> BatteryType -> Bool # (/=) :: BatteryType -> BatteryType -> Bool #
Ord BatteryType Source #
Methods compare :: BatteryType -> BatteryType -> Ordering # (<) :: BatteryType -> BatteryType -> Bool # (<=) :: BatteryType -> BatteryType -> Bool # (>) :: BatteryType -> BatteryType -> Bool # (>=) :: BatteryType -> BatteryType -> Bool # max :: BatteryType -> BatteryType -> BatteryType # min :: BatteryType -> BatteryType -> BatteryType #
Show BatteryType Source #
Methods showsPrec :: Int -> BatteryType -> ShowS # show :: BatteryType -> String # showList :: [BatteryType] -> ShowS #

Accessors

batteryContextNew :: IO (Maybe BatteryContext) Source #

Construct a battery context if possible. This could fail if the UPower daemon is not running. The context can be used to get actual battery state with getBatteryInfo.

getBatteryInfo :: BatteryContext -> IO (Maybe BatteryInfo) Source #

Query the UPower daemon about information on a specific battery. If some fields are not actually present, they may have bogus values here. Don't bet anything critical on it.