/**
* Returns list of <tt>ChatTransport</tt> (i.e. contact) that supports the specified
* <tt>OperationSet</tt>.
*
* @param transports list of <tt>ChatTransport</tt>
* @param opSetClass <tt>OperationSet</tt> to find
* @return list of <tt>ChatTransport</tt> (i.e. contact) that supports the specified
* <tt>OperationSet</tt>.
*/
private List<ChatTransport> getOperationSetForCapabilities(
List<ChatTransport> transports, Class<? extends OperationSet> opSetClass) {
List<ChatTransport> list = new ArrayList<ChatTransport>();
for (ChatTransport transport : transports) {
ProtocolProviderService protocolProvider = transport.getProtocolProvider();
OperationSetContactCapabilities capOpSet =
protocolProvider.getOperationSet(OperationSetContactCapabilities.class);
OperationSetPersistentPresence presOpSet =
protocolProvider.getOperationSet(OperationSetPersistentPresence.class);
if (capOpSet == null) {
list.add(transport);
} else if (presOpSet != null) {
Contact contact = presOpSet.findContactByID(transport.getName());
if ((contact != null) && (capOpSet.getOperationSet(contact, opSetClass) != null)) {
// It supports OpSet for at least one of its
// ChatTransports
list.add(transport);
}
}
}
return list;
}
/**
* Sends a typing notification state.
*
* @param typingState the typing notification state to send
* @return the result of this operation. One of the TYPING_NOTIFICATION_XXX constants defined in
* this class
*/
public int sendTypingNotification(int typingState) {
// If this chat transport does not support sms messaging we do
// nothing here.
if (!allowsTypingNotifications()) return -1;
ProtocolProviderService protocolProvider = contact.getProtocolProvider();
OperationSetTypingNotifications tnOperationSet =
protocolProvider.getOperationSet(OperationSetTypingNotifications.class);
// if protocol is not registered or contact is offline don't
// try to send typing notifications
if (protocolProvider.isRegistered()
&& contact.getPresenceStatus().getStatus() >= PresenceStatus.ONLINE_THRESHOLD) {
try {
tnOperationSet.sendTypingNotification(contact, typingState);
return ChatPanel.TYPING_NOTIFICATION_SUCCESSFULLY_SENT;
} catch (Exception ex) {
logger.error("Failed to send typing notifications.", ex);
return ChatPanel.TYPING_NOTIFICATION_SEND_FAILED;
}
}
return ChatPanel.TYPING_NOTIFICATION_SEND_FAILED;
}