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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.Presence;
import com.isode.stroke.elements.ChatState;
import com.isode.stroke.signals.Signal1;
import com.isode.stroke.base.NotNull;
public class ChatStateTracker {
private ChatState.ChatStateType currentState_;
public final Signal1<ChatState.ChatStateType> onChatStateChange = new Signal1<ChatState.ChatStateType>();
/**
* ChatStateTracker();
*/
public ChatStateTracker() {
currentState_ = ChatState.ChatStateType.Gone;
}
/**
* @param message, notnull
*/
public void handleMessageReceived(Message message) {
NotNull.exceptIfNull(message, "message");
if (message.getType() == Message.Type.Error) {
return;
}
ChatState statePayload = message.getPayload(new ChatState());
if (statePayload != null) {
changeState(statePayload.getChatState());
}
}
/**
* @param newPresence, notnull
*/
public void handlePresenceChange(Presence newPresence) {
NotNull.exceptIfNull(newPresence, "newPresence");
if (newPresence.getType() == Presence.Type.Unavailable) {
onChatStateChange.emit(ChatState.ChatStateType.Gone);
}
}
private void changeState(ChatState.ChatStateType state) {
if (state != currentState_) {
currentState_ = state;
onChatStateChange.emit(state);
}
}
}
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