Package xal.app.knobs

Class KnobElement.CALimitsHandler

java.lang.Object

xal.app.knobs.KnobElement.CALimitsHandler

All Implemented Interfaces:

KnobElement.LimitsHandler, xal.ca.ConnectionListener, xal.ca.IEventSinkValDbl

Enclosing class:

KnobElement

protected class KnobElement.CALimitsHandler
extends Object
implements KnobElement.LimitsHandler, xal.ca.ConnectionListener, xal.ca.IEventSinkValDbl

CA limits handler

Field Summary

Fields

Modifier and Type	Field	Description
protected xal.ca.Channel	_lowerChannel	the channel with the lower limit
protected xal.ca.Channel	_upperChannel	the channel with the upper limit

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CALimitsHandler()

Method Summary

Modifier and Type	Method	Description
void	connectionDropped(xal.ca.Channel channel)	handle the disconnect event
void	connectionMade(xal.ca.Channel channel)	handle the connection event
void	eventValue(double value, xal.ca.Channel channel)	handle the get value callback
String	getInactiveExcuse()	Determine the reason for not being ready
boolean	isReady()	Determine if the limits handler is ready
void	setChannel(xal.ca.Channel channel)	set a new channel whose limits we wish to monitor TODO: This will not work for PVaccess, but that's maybe not necessary?
void	updateLimits()	update the limits

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_lowerChannel

protected xal.ca.Channel _lowerChannel

the channel with the lower limit

_upperChannel

protected xal.ca.Channel _upperChannel

the channel with the upper limit

Constructor Detail

CALimitsHandler

protected CALimitsHandler()

Method Detail

setChannel

public void setChannel(xal.ca.Channel channel)

set a new channel whose limits we wish to monitor TODO: This will not work for PVaccess, but that's maybe not necessary?

connectionMade

public void connectionMade(xal.ca.Channel channel)

handle the connection event

Specified by:

connectionMade in interface xal.ca.ConnectionListener

connectionDropped

public void connectionDropped(xal.ca.Channel channel)

handle the disconnect event

Specified by:

connectionDropped in interface xal.ca.ConnectionListener

eventValue

public void eventValue(double value,
                       xal.ca.Channel channel)

handle the get value callback

Specified by:

eventValue in interface xal.ca.IEventSinkValDbl

updateLimits

public void updateLimits()

update the limits

Specified by:

updateLimits in interface KnobElement.LimitsHandler

isReady

public boolean isReady()

Determine if the limits handler is ready

Specified by:

isReady in interface KnobElement.LimitsHandler

getInactiveExcuse

public String getInactiveExcuse()

Determine the reason for not being ready

Specified by:

getInactiveExcuse in interface KnobElement.LimitsHandler