xal.extension.scan

Class MonitoredPV

java.lang.Object

xal.extension.scan.MonitoredPV

Direct Known Subclasses:

WrappedChannel

public class MonitoredPV
extends java.lang.Object

Manage the monitor events for a Process Variable

Field Summary

Fields

Modifier and Type	Field and Description
protected ScanChannelMonitor	_monitor monitor of channel to monitor

Method Summary

Modifier and Type	Method and Description
void	addStateListener(java.awt.event.ActionListener actionListener) Add a listener for state change events from this monitored PV
void	addValueListener(java.awt.event.ActionListener actionListener) Add a listener for value change events from this monitored PV
java.lang.String	getAlias() Returns the alias attribute of the MonitoredPV object
static java.lang.Object[]	getAliases() Returns the aliases attribute of the MonitoredPV class
Channel	getChannel() Get the channel to be monitored
java.lang.String	getChannelName() Get the name of the channel to be monitored
static MonitoredPV	getMonitoredPV(java.lang.String alias) Returns the monitoredPV attribute of the MonitoredPV class
double	getValue() Get the latest value of the monitored channel
boolean	isGood() Determine whether the channel is good meaning that it is connected, has posted a monitored value and the latest event was successful
static void	removeMonitoredPV(MonitoredPV mpv) Dispose of the monitored PV and remove its alias
static void	removeMonitoredPV(java.lang.String alias) Remove the monitored PV associated with the alias
void	removeStateListener(java.awt.event.ActionListener actionListener) Remove the listener from getting state change events from this monitored PV
void	removeValueListener(java.awt.event.ActionListener actionListener) Remove the listener from getting value change events from this monitored PV
void	setChannel(Channel channel) Sets the channel to monitor
void	setChannelName(java.lang.String channelName) Set the name of the channel to monitor
void	setChannelNameQuietly(java.lang.String chanName) Sets the name of the channel to monitor without posting events
void	setChannelQuietly(Channel channel) Sets the channelQuietly attribute of the MonitoredPV object
void	setValueChanged(boolean valueChanged) Sets the boolean marker to the specified change state
void	startMonitor() Start the monitor
void	stopMonitor() Stop the monitor
boolean	valueChanged() Determine whether the value was changed since the last reset (i.e.

Methods inherited from class java.lang.Object

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

Field Detail

_monitor

protected ScanChannelMonitor _monitor

monitor of channel to monitor

Method Detail

getMonitoredPV

public static MonitoredPV getMonitoredPV(java.lang.String alias)

Returns the monitoredPV attribute of the MonitoredPV class

Parameters:

alias - The Parameter

Returns:

The monitoredPV value

valueChanged

public boolean valueChanged()

Determine whether the value was changed since the last reset (i.e. setValueChanged(false)).

Returns:

true if the value was changed since the last time it was reset; false otherwise

setValueChanged

public void setValueChanged(boolean valueChanged)

Sets the boolean marker to the specified change state

Parameters:

valueChanged - The new value change marker state

removeMonitoredPV

public static void removeMonitoredPV(java.lang.String alias)

Remove the monitored PV associated with the alias

Parameters:

alias - The Parameter

removeMonitoredPV

public static void removeMonitoredPV(MonitoredPV mpv)

Dispose of the monitored PV and remove its alias

Parameters:

mpv - the monitored PV to remove

getAliases

public static java.lang.Object[] getAliases()

Returns the aliases attribute of the MonitoredPV class

Returns:

The aliases value

getAlias

public java.lang.String getAlias()

Returns the alias attribute of the MonitoredPV object

Returns:

The alias value

getChannelName

public java.lang.String getChannelName()

Get the name of the channel to be monitored

Returns:

The channelName value

getChannel

public Channel getChannel()

Get the channel to be monitored

Returns:

The channel value

setChannel

public void setChannel(Channel channel)

Sets the channel to monitor

Parameters:

channel - the new channel to monitor

setChannelQuietly

public void setChannelQuietly(Channel channel)

Sets the channelQuietly attribute of the MonitoredPV object

Parameters:

channel - The new channelQuietly value

setChannelName

public void setChannelName(java.lang.String channelName)

Set the name of the channel to monitor

Parameters:

channelName - The new channelName value

setChannelNameQuietly

public void setChannelNameQuietly(java.lang.String chanName)

Sets the name of the channel to monitor without posting events

Parameters:

chanName - The new channelNameQuietly value

getValue

public double getValue()

Get the latest value of the monitored channel

Returns:

The value value

isGood

public boolean isGood()

Determine whether the channel is good meaning that it is connected, has posted a monitored value and the latest event was successful

Returns:

channel status

addStateListener

public void addStateListener(java.awt.event.ActionListener actionListener)

Add a listener for state change events from this monitored PV

Parameters:

actionListener - listener of state change events

removeStateListener

public void removeStateListener(java.awt.event.ActionListener actionListener)

Remove the listener from getting state change events from this monitored PV

Parameters:

actionListener - the listener to remove

addValueListener

public void addValueListener(java.awt.event.ActionListener actionListener)

Add a listener for value change events from this monitored PV

Parameters:

actionListener - The listener to add for value change events

removeValueListener

public void removeValueListener(java.awt.event.ActionListener actionListener)

Remove the listener from getting value change events from this monitored PV

Parameters:

actionListener - the listener to remove

stopMonitor

public void stopMonitor()

Stop the monitor

startMonitor

public void startMonitor()

Start the monitor