/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.java.sip.communicator.impl.protocol.gibberish;
import net.java.sip.communicator.service.protocol.*;
/**
* Instant messaging functionalites for the Gibberish protocol.
*
* @author Emil Ivov
*/
public class OperationSetBasicInstantMessagingGibberishImpl
extends AbstractOperationSetBasicInstantMessaging
{
/**
* The currently valid persistent presence operation set..
*/
private OperationSetPersistentPresenceGibberishImpl opSetPersPresence = null;
/**
* The protocol provider that created us.
*/
private ProtocolProviderServiceGibberishImpl parentProvider = null;
/**
* Creates an instance of this operation set keeping a reference to the
* parent protocol provider and presence operation set.
*
* @param provider The provider instance that creates us.
* @param opSetPersPresence the currently valid
* <tt>OperationSetPersistentPresenceGibberishImpl</tt> instance.
*/
public OperationSetBasicInstantMessagingGibberishImpl(
ProtocolProviderServiceGibberishImpl provider,
OperationSetPersistentPresenceGibberishImpl opSetPersPresence)
{
this.opSetPersPresence = opSetPersPresence;
this.parentProvider = provider;
}
@Override
public Message createMessage(String content, String contentType,
String encoding, String subject)
{
return new MessageGibberishImpl(content, contentType, encoding, subject);
}
/**
* Sends the <tt>message</tt> to the destination indicated by the
* <tt>to</tt> contact.
*
* @param to the <tt>Contact</tt> to send <tt>message</tt> to
* @param message the <tt>Message</tt> to send.
* @throws IllegalStateException if the underlying ICQ stack is not
* registered and initialized.
* @throws IllegalArgumentException if <tt>to</tt> is not an instance
* belonging to the underlying implementation.
*/
public void sendInstantMessage(Contact to, Message message) throws
IllegalStateException, IllegalArgumentException
{
if( !(to instanceof ContactGibberishImpl) )
throw new IllegalArgumentException(
"The specified contact is not a Gibberish contact."
+ to);
//first fire an event that we've delivered the message.
//Note that in a real world protocol implementation we would first wait
//for a delivery confirmation coming from the protocol stack.
fireMessageDelivered(message, to);
//now do message delivery.
deliverMessage(message, (ContactGibberishImpl)to);
}
/**
* In case the to the <tt>to</tt> Contact corresponds to another gibberish
* protocol provider registered with SIP Communicator, we deliver
* the message to them, in case the <tt>to</tt> Contact represents us, we
* fire a <tt>MessageReceivedEvent</tt>, and if <tt>to</tt> is simply
* a contact in our contact list, then we simply echo the message.
*
* @param message the <tt>Message</tt> the message to deliver.
* @param to the <tt>Contact</tt> that we should deliver the message to.
*/
private void deliverMessage(Message message, ContactGibberishImpl to)
{
String userID = to.getAddress();
//if the user id is owr own id, then this message is being routed to us
//from another instance of the gibberish provider.
if (userID.equals(this.parentProvider.getAccountID().getUserID()))
{
//check who is the provider sending the message
String sourceUserID
= to.getProtocolProvider().getAccountID().getUserID();
//check whether they are in our contact list
Contact from = opSetPersPresence.findContactByID(sourceUserID);
//and if not - add them there as volatile.
if(from == null)
{
from = opSetPersPresence.createVolatileContact(sourceUserID);
}
//and now fire the message received event.
fireMessageReceived(message, from);
}
else
{
//if userID is not our own, try an check whether another provider
//has that id and if yes - deliver the message to them.
ProtocolProviderServiceGibberishImpl gibberishProvider
= this.opSetPersPresence.findProviderForGibberishUserID(userID);
if(gibberishProvider != null)
{
OperationSetBasicInstantMessagingGibberishImpl opSetIM
= (OperationSetBasicInstantMessagingGibberishImpl)
gibberishProvider.getOperationSet(
OperationSetBasicInstantMessaging.class);
opSetIM.deliverMessage(message, to);
}
else
{
//if we got here then "to" is simply someone in our contact
//list so let's just echo the message.
fireMessageReceived(message, to);
}
}
}
/**
* Determines wheter the protocol provider (or the protocol itself) support
* sending and receiving offline messages. Most often this method would
* return true for protocols that support offline messages and false for
* those that don't. It is however possible for a protocol to support these
* messages and yet have a particular account that does not (i.e. feature
* not enabled on the protocol server). In cases like this it is possible
* for this method to return true even when offline messaging is not
* supported, and then have the sendMessage method throw an
* OperationFailedException with code - OFFLINE_MESSAGES_NOT_SUPPORTED.
*
* @return <tt>true</tt> if the protocol supports offline messages and
* <tt>false</tt> otherwise.
*/
public boolean isOfflineMessagingSupported()
{
return true;
}
/**
* Determines wheter the protocol supports the supplied content type
*
* @param contentType the type we want to check
* @return <tt>true</tt> if the protocol supports it and
* <tt>false</tt> otherwise.
*/
public boolean isContentTypeSupported(String contentType)
{
if(contentType.equals(DEFAULT_MIME_TYPE))
return true;
else
return false;
}
}