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/*
* Copyright (c) 2010 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
/*
* Copyright (c) 2015 Tarun Gupta.
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
package com.isode.stroke.chat;
import com.isode.stroke.elements.Message;
import com.isode.stroke.elements.ChatState;
import com.isode.stroke.elements.DiscoInfo;
import com.isode.stroke.disco.EntityCapsProvider;
import com.isode.stroke.client.StanzaChannel;
import com.isode.stroke.signals.SignalConnection;
import com.isode.stroke.signals.Slot1;
import com.isode.stroke.jid.JID;
public class ChatStateNotifier {
private StanzaChannel stanzaChannel_;
private EntityCapsProvider entityCapsManager_;
private JID contact_ = new JID();
private boolean contactHas85Caps_;
private boolean contactHasSentActive_;
private boolean userIsTyping_;
private boolean contactIsOnline_;
private SignalConnection onCapsChangedConnection;
public ChatStateNotifier(StanzaChannel stanzaChannel, JID contact, EntityCapsProvider entityCapsManager) {
this.stanzaChannel_ = stanzaChannel;
this.contact_ = contact;
this.entityCapsManager_ = entityCapsManager;
setContact(contact);
onCapsChangedConnection = entityCapsManager_.onCapsChanged.connect(new Slot1<JID>() {
public void call(JID j1) {
handleCapsChanged(j1);
}
});
}
private boolean contactShouldReceiveStates() {
/* So, yes, the XEP says to look at caps, but it also says that once you've
heard from the contact, the active state overrides this.
*HOWEVER* it says that the MUST NOT send csn if you haven't received
active is OPTIONAL behaviour for if you haven't got caps.*/
return contactIsOnline_ && (contactHasSentActive_ || contactHas85Caps_);
}
private void changeState(ChatState.ChatStateType state) {
Message message = new Message();
message.setTo(contact_);
message.addPayload(new ChatState(state));
stanzaChannel_.sendMessage(message);
}
private void handleCapsChanged(JID jid) {
if (jid.equals(contact_)) {
DiscoInfo caps = entityCapsManager_.getCaps(contact_);
boolean hasCSN = (caps != null) && (caps.hasFeature(DiscoInfo.ChatStatesFeature));
contactHas85Caps_ = hasCSN;
}
}
public void setContact(JID contact) {
contactHasSentActive_ = false;
userIsTyping_ = false;
contactIsOnline_ = false;
contact_ = contact;
handleCapsChanged(contact_);
}
public void addChatStateRequest(Message message) {
if (contactShouldReceiveStates()) {
message.addPayload(new ChatState(ChatState.ChatStateType.Active));
}
}
public void setUserIsTyping() {
boolean should = contactShouldReceiveStates();
if (should && !userIsTyping_) {
userIsTyping_ = true;
changeState(ChatState.ChatStateType.Composing);
}
}
public void userSentMessage() {
userIsTyping_ = false;
}
public void userCancelledNewMessage() {
if (userIsTyping_) {
userIsTyping_ = false;
changeState(ChatState.ChatStateType.Active);
}
}
public void receivedMessageFromContact(boolean hasActiveElement) {
contactHasSentActive_ = hasActiveElement;
}
public void setContactIsOnline(boolean online) {
contactIsOnline_ = online;
}
}
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Swift