com.inductiveautomation.ignition.common.expressions

Class TagListener

java.lang.Object

com.inductiveautomation.ignition.common.expressions.TagListener

All Implemented Interfaces:

TagChangeListener, java.util.EventListener

public class TagListener
extends java.lang.Object
implements TagChangeListener

A class that can listen for tag changes and notify an InteractionListener. It also holds the last value seen internally and will serialize it.

Constructor Summary

Constructors

Constructor and Description
TagListener()
TagListener(TagPath path, java.lang.Object value, Quality quality)
TagListener(TagPath path, TagValue qv)

Method Summary

Modifier and Type	Method and Description
TagPath	_getTagPath()
void	_setTagPath(TagPath path)
java.lang.String	getTagPath()
TagProp	getTagProperty() The TagProp that this listener cares about.
BasicTagValue	getTagValue()
void	setQValue(BasicQualifiedValue bqv) Deprecated.
void	setQValue(BasicQualifiedValue bqv) Deprecated.
void	setQValue(BasicTagValue btv) Deprecated.
void	setTagPath(java.lang.String tagPath)
void	setTagValue(BasicTagValue value)
void	shutdown()
void	startup(BaseContext context, InteractionListener listener)
void	tagChanged(TagChangeEvent e) Invoked when the tag has changed

Methods inherited from class java.lang.Object

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

Constructor Detail

TagListener

public TagListener(TagPath path,
                   java.lang.Object value,
                   Quality quality)

TagListener

public TagListener(TagPath path,
                   TagValue qv)

TagListener

public TagListener()

Method Detail

getTagProperty

public TagProp getTagProperty()

Description copied from interface: TagChangeListener

The TagProp that this listener cares about. Use null to receive all property's events.

Specified by:

getTagProperty in interface TagChangeListener

Returns:

tagChanged

public void tagChanged(TagChangeEvent e)

Description copied from interface: TagChangeListener

Invoked when the tag has changed

Specified by:

tagChanged in interface TagChangeListener

Parameters:

e - a ChangeEvent object

startup

public void startup(BaseContext context,
                    InteractionListener listener)

shutdown

public void shutdown()

_getTagPath

public TagPath _getTagPath()

_setTagPath

public void _setTagPath(TagPath path)

getTagPath

public java.lang.String getTagPath()

setTagPath

public void setTagPath(java.lang.String tagPath)

getTagValue

public BasicTagValue getTagValue()

setTagValue

public void setTagValue(BasicTagValue value)

setQValue

@Deprecated
public void setQValue(BasicTagValue btv)

Deprecated.

setQValue

@Deprecated
public void setQValue(BasicQualifiedValue bqv)

Deprecated.

setQValue

@Deprecated
public void setQValue(BasicQualifiedValue bqv)

Deprecated.