de.fu_berlin.inf.dpp.net.xmpp.roster.RosterTracker Class Reference

List of all members.

Public Member Functions
	RosterTracker (XMPPConnectionService connectionService)
void	addRosterListener (IRosterListener rosterListener)
void	removeRosterListener (IRosterListener rosterListener)
Roster	getRoster ()
List< Presence >	getPresences (JID from)
List< JID >	getAvailablePresences (JID from)

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Detailed Description

The RosterTracker is responsible for offering a convenient access for receiving roster listener changes, if one is not interested in tracking whether the connection is changed.

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Constructor & Destructor Documentation

de.fu_berlin.inf.dpp.net.xmpp.roster.RosterTracker.RosterTracker

(

XMPPConnectionService

connectionService

)

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Member Function Documentation

void de.fu_berlin.inf.dpp.net.xmpp.roster.RosterTracker.addRosterListener

(

IRosterListener

rosterListener

)

Adds a listener to this roster. The listener will be fired anytime one or more changes to the roster are pushed from the server.

Parameters:

rosterListener

a roster listener.

List<JID> de.fu_berlin.inf.dpp.net.xmpp.roster.RosterTracker.getAvailablePresences

(

JID

from

)

Returns the RQ-JIDs of all presences of the given (plain) JID which are available.

An empty list is returned if no presence for the given JID is online.

List<Presence> de.fu_berlin.inf.dpp.net.xmpp.roster.RosterTracker.getPresences

(

JID

from

)

Returns all currently known online presences associated with a JID or an unavailable presence if the user is not online or an empty list if no roster is available.

Roster de.fu_berlin.inf.dpp.net.xmpp.roster.RosterTracker.getRoster

(

)

Returns the roster that this tracker is currently using.

Returns:

the current roster or null if no roster is available

void de.fu_berlin.inf.dpp.net.xmpp.roster.RosterTracker.removeRosterListener

(

IRosterListener

rosterListener

)

Removes a listener from this roster. The listener will be fired anytime one or more changes to the roster are pushed from the server.

Parameters:

rosterListener

a roster listener.