Package org.ka2ddo.yaac.filter

Class PacketTypeFilter

java.lang.Object

org.ka2ddo.yaac.filter.Filter

org.ka2ddo.yaac.filter.PacketTypeFilter

public class PacketTypeFilter
extends Filter

Filter based on the type of APRS packet in the frame. This filter has no affect (positive or negative) on non-APRS packets.

The present implementation of this filter does not permit editing or modification of the filter settings. As such, it does not have an associated configuration editor class.

Author:

Andrew Pavlin, KA2DDO

Field Summary

Fields inherited from class org.ka2ddo.yaac.filter.Filter

RESULT_NEUTRAL, RESULT_PASS, RESULT_REJECT, RESULT_WEAK_PASS, RESULT_WEAK_REJECT

Constructor Summary

Constructors

Constructor	Description
PacketTypeFilter(String typeCodes)	Create a non-modifiable PacketTypeFilter that will only pass packets matching the specified APRS packet types.

Method Summary

Modifier and Type	Method	Description
int	acceptAX25Frame(AX25Frame frame)	Indicate whether the specified frame should be displayed.
int	acceptMessage(AX25Message msg)	Indicate whether the specified message should be displayed or used to determine if a station should be displayed (if recursively called from acceptStation()).
int	acceptStation(StationState ss)	Indicate whether the specified station should be displayed.
void	addFilterChangeListener(FilterChangeListener l)	Register a listener for changes of this Filter.
String	getFilterHelpTagName()	Report a tag name used to look up JavaHelp for a filter editor.
String	getFilterTypeTagName()	Report a tag name used to look up the labelling for an editor panel for this editor instance in a ResourceBundle of translated names.
String	getFilterUIName()	Get the class name of a dynamically loadable class for the the GUI for this filter.
void	removeFilterChangeListener(FilterChangeListener l)	Deregisters a listener.
void	setToPassall()	Reset the filter to a configuration that would pass the maximum amount of messages, packets, and stations.

Methods inherited from class org.ka2ddo.yaac.filter.Filter

canRejectSome, clone

Methods inherited from class java.lang.Object

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

Constructor Details

PacketTypeFilter

public PacketTypeFilter(String typeCodes)
                 throws IllegalArgumentException

Create a non-modifiable PacketTypeFilter that will only pass packets matching the specified APRS packet types. Type codes that can be specified in the parameter are:

p	Position packets
o	Objects
i	Items
m	Message
q	Query
s	Status
t	Telemetry
u	User-defined
n	NWS format messages and objects
w	Weather

Parameters:

typeCodes - String of lowercase letters matching the types to be accepted by the filter.

Throws:

IllegalArgumentException - if an unrecognized type code is specified in typeCodes

Method Details

acceptAX25Frame

public int acceptAX25Frame(AX25Frame frame)

Indicate whether the specified frame should be displayed.

Specified by:

acceptAX25Frame in class Filter

Parameters:

frame - the timestamped AX25 frame record to analyze

Returns:

RESULT_xxx constant indicating if message information should be displayed

getFilterTypeTagName

public String getFilterTypeTagName()

Report a tag name used to look up the labelling for an editor panel for this editor instance in a ResourceBundle of translated names.

Specified by:

getFilterTypeTagName in class Filter

Returns:

String to use in looking up form label for this filter's editor

getFilterHelpTagName

public String getFilterHelpTagName()

Report a tag name used to look up JavaHelp for a filter editor.

Specified by:

getFilterHelpTagName in class Filter

Returns:

String name (as defined in HelpMap.jhm) for this filter's online help, or null if there is no filter specific help

getFilterUIName

public String getFilterUIName()

Get the class name of a dynamically loadable class for the the GUI for this filter. The name is allowed to have a wildcard '*' in it where a GUI type ("gui" for standard Java or "android" for Android) can be substituted.

Specified by:

getFilterUIName in class Filter

Returns:

String name of GUI class for this filter

acceptStation

public int acceptStation(StationState ss)

Indicate whether the specified station should be displayed. The acceptMessage() and acceptAX25Frame() methods may be called to assist in the determination.

Specified by:

acceptStation in class Filter

Parameters:

ss - StationState record to analyze

Returns:

RESULT_xxx constant indicating if station information should be displayed

acceptMessage

public int acceptMessage(AX25Message msg)

Indicate whether the specified message should be displayed or used to determine if a station should be displayed (if recursively called from acceptStation()).

Specified by:

acceptMessage in class Filter

Parameters:

msg - the APRS Message record to analyze

Returns:

RESULT_xxx constant indicating if message information should be displayed

addFilterChangeListener

public void addFilterChangeListener(FilterChangeListener l)

Register a listener for changes of this Filter.

Specified by:

addFilterChangeListener in class Filter

Parameters:

l - FilterChangeListener to register

removeFilterChangeListener

public void removeFilterChangeListener(FilterChangeListener l)

Deregisters a listener. The listener will no longer be informed of changes to this filter.

Specified by:

removeFilterChangeListener in class Filter

Parameters:

l - FilterChangeListener to deregister

setToPassall

public void setToPassall()

Reset the filter to a configuration that would pass the maximum amount of messages, packets, and stations. Because this filter is presently not modifiable, this method is a no-op.

Specified by:

setToPassall in class Filter