fr.liglab.adele.icasa.location.util

Class ZoneTracker

java.lang.Object

fr.liglab.adele.icasa.location.util.ZoneTracker

All Implemented Interfaces:

ZoneTrackerCustomizer

public class ZoneTracker
extends Object
implements ZoneTrackerCustomizer

Utility class to track zones. User: garciai@imag.fr Date: 8/2/13 Time: 11:24 AM

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.felix.ipojo.util.Tracker	contextMgrTracker Tracker of technical service used to listen zone events.
protected static org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor and Description
ZoneTracker(org.osgi.framework.BundleContext context, ZoneTrackerCustomizer customizer, String... mandatoryVariables) Creates a ZoneTracker object for the specified zone.

Method Summary

Methods

Modifier and Type	Method and Description
void	addedZone(Zone zone) A zone tracked by the Tracker object has been added in the list.
boolean	addingZone(Zone zone) A zone is being added to the Tracker object.
void	close() Closes this ZoneTracker object.
List<Zone>	getZones() Gets the list of stored zones.
void	modifiedZone(Zone zone, String variableName, Object oldValue, Object newValue) Called when a zone tracked by the Tracker object has been modified.
void	movedZone(Zone zone, Position oldPosition, Position newPosition)
void	open() Opens this ZoneTracker object and begin tracking services.
void	removedZone(Zone zone) A zone tracked by the Tracker object has been removed.
void	resizedZone(Zone zone) Called when a zone tracked by the Tracker object has been resized.
int	size() Returns the number of zones being tracked by this ZoneTracker object.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static org.slf4j.Logger logger

contextMgrTracker

protected org.apache.felix.ipojo.util.Tracker contextMgrTracker

Tracker of technical service used to listen zone events.

Constructor Detail

ZoneTracker

public ZoneTracker(org.osgi.framework.BundleContext context,
           ZoneTrackerCustomizer customizer,
           String... mandatoryVariables)

Creates a ZoneTracker object for the specified zone. Zone.

Parameters:

context -

customizer -

mandatoryVariables -

Method Detail

open

public void open()

Opens this ZoneTracker object and begin tracking services.

Services which match the search criteria specified when this ZoneTracker object was created are now tracked by this ZoneTracker object.

close

public void close()

Closes this ZoneTracker object.

This method should be called when this ZoneTracker object should end the tracking of services.

addingZone

public boolean addingZone(Zone zone)

A zone is being added to the Tracker object. This method is called before a zone which matched the search parameters of the Tracker object is added to it. This method must return true to be tracked for this zone object.

Specified by:

addingZone in interface ZoneTrackerCustomizer

Parameters:

zone - the zone being added to the Tracker object.

Returns:

true if the zone will be tracked, false if not.

addedZone

public void addedZone(Zone zone)

A zone tracked by the Tracker object has been added in the list. This method is called when a zone has been added in the managed list (after addingZone) and if the zone has not disappeared before during the callback.

Specified by:

addedZone in interface ZoneTrackerCustomizer

Parameters:

zone - the added zone

modifiedZone

public void modifiedZone(Zone zone,
                String variableName,
                Object oldValue,
                Object newValue)

Called when a zone tracked by the Tracker object has been modified. A tracked zone is considered modified according to tracker configuration.

Specified by:

modifiedZone in interface ZoneTrackerCustomizer

Parameters:

zone - the changed zone

variableName - name of the variable that has changed

oldValue - previous value of the property

newValue - new value of the property

movedZone

public void movedZone(Zone zone,
             Position oldPosition,
             Position newPosition)

Specified by:

movedZone in interface ZoneTrackerCustomizer

Parameters:

zone -

oldPosition -

newPosition -

resizedZone

public void resizedZone(Zone zone)

Description copied from interface: ZoneTrackerCustomizer

Called when a zone tracked by the Tracker object has been resized.

Specified by:

resizedZone in interface ZoneTrackerCustomizer

Parameters:

zone - the resized zone

removedZone

public void removedZone(Zone zone)

A zone tracked by the Tracker object has been removed. This method is called after a zone is no longer being tracked by the Tracker object.

Specified by:

removedZone in interface ZoneTrackerCustomizer

Parameters:

zone - the removed zone.

getZones

public List<Zone> getZones()

Gets the list of stored zones.

Returns:

the list containing zp,es

size

public int size()

Returns the number of zones being tracked by this ZoneTracker object.

Returns:

the Number of zones being tracked.