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

batteryContextsNew :: IO [BatteryContext] Source #

Construct a battery context for every battery in the system. This could fail if the UPower daemon is not running. The contexts 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.