7 files changed, 271 insertions, 2 deletions
diff --git a/src/com/isode/stroke/chat/ChatStateTracker.java b/src/com/isode/stroke/chat/ChatStateTracker.java
new file mode 100644
index 0000000..c63d967
--- /dev/null
+++ b/src/com/isode/stroke/chat/ChatStateTracker.java
@@ -0,0 +1,62 @@
+/*
+ * 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);
+		}
+	}
+}
diff --git a/src/com/isode/stroke/elements/ChatState.java b/src/com/isode/stroke/elements/ChatState.java
new file mode 100644
index 0000000..151eec4
--- /dev/null
+++ b/src/com/isode/stroke/elements/ChatState.java
@@ -0,0 +1,54 @@
+/*
+ * 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.elements;
+
+import com.isode.stroke.base.NotNull;
+import com.isode.stroke.elements.Payload;
+
+public class ChatState extends Payload {
+
+	public enum ChatStateType {Active, Composing, Paused, Inactive, Gone};
+
+	private ChatStateType state_;
+	
+	/**
+	* ChatState();
+	*/
+	public ChatState() {
+		state_ = ChatStateType.Active;
+	}
+
+	/**
+	* ChatState(state);
+	*/
+	public ChatState(ChatStateType state) {
+		NotNull.exceptIfNull(state, "state");
+		state_ = state;
+	}
+
+	/**
+	*
+	* @return state, notnull.
+	*/
+	public ChatStateType getChatState() {
+		return state_;
+	}
+
+	/**
+	*
+	* @param state, notnull.
+	*/
+	public void setChatState(ChatStateType state) {
+		NotNull.exceptIfNull(state, "state");
+		state_ = state;
+	}
+}
+\ No newline at end of file
diff --git a/src/com/isode/stroke/parser/payloadparsers/ChatStateParser.java b/src/com/isode/stroke/parser/payloadparsers/ChatStateParser.java
new file mode 100644
index 0000000..12da1e8
--- /dev/null
+++ b/src/com/isode/stroke/parser/payloadparsers/ChatStateParser.java
@@ -0,0 +1,61 @@
+/*
+ * 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.parser.payloadparsers;
+
+import com.isode.stroke.parser.GenericPayloadParser;
+import com.isode.stroke.parser.AttributeMap;
+import com.isode.stroke.elements.ChatState;
+import com.isode.stroke.base.NotNull;
+
+public class ChatStateParser extends GenericPayloadParser<ChatState> {
+
+	private int level_ = 0;
+
+	/**
+	* ChatStateParser();
+	*/
+	public ChatStateParser() {
+		super(new ChatState());
+	}
+
+	/**
+	* @param attributes, notnull.
+	*/
+	public void handleStartElement(String element, String ns, AttributeMap attributes) {
+		NotNull.exceptIfNull(element, "element");
+		if (this.level_ == 0) {
+			ChatState.ChatStateType state = ChatState.ChatStateType.Active;
+			if (element.equals("active")) {
+				state = ChatState.ChatStateType.Active;
+			} else if (element.equals("composing")) {
+				state = ChatState.ChatStateType.Composing;
+			} else if (element.equals("inactive")) {
+				state = ChatState.ChatStateType.Inactive;
+			} else if (element.equals("paused")) {
+				state = ChatState.ChatStateType.Paused;
+			} else if (element.equals("gone")) {
+				state = ChatState.ChatStateType.Gone;
+			}
+			getPayloadInternal().setChatState(state);
+		}
+		++level_;
+	}
+
+	public void handleEndElement(String element, String ns) {
+		--level_;
+	}
+
+	public void handleCharacterData(String data) {
+
+	}
+
+}
+\ No newline at end of file
diff --git a/src/com/isode/stroke/parser/payloadparsers/ChatStateParserFactory.java b/src/com/isode/stroke/parser/payloadparsers/ChatStateParserFactory.java
new file mode 100644
index 0000000..406ffef
--- /dev/null
+++ b/src/com/isode/stroke/parser/payloadparsers/ChatStateParserFactory.java
@@ -0,0 +1,43 @@
+/*
+ * 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.parser.payloadparsers;
+
+import com.isode.stroke.parser.PayloadParserFactory;
+import com.isode.stroke.parser.payloadparsers.ChatStateParser;
+import com.isode.stroke.parser.AttributeMap;
+import com.isode.stroke.parser.PayloadParser;
+
+public class ChatStateParserFactory implements PayloadParserFactory {
+
+	/**
+	* ChatStateParserFactory();
+	*/
+	public ChatStateParserFactory() {
+
+	}
+
+	/**
+	* @param attributes, notnull
+	*/
+	public boolean canParse(String element, String ns, AttributeMap attributes) {
+		return  ((ns.equals("http://jabber.org/protocol/chatstates")) && 
+			(element.equals("active") || element.equals("composing") || element.equals("paused") || element.equals("inactive") || element.equals("gone")));
+	}
+
+	/**
+	* @return PayloadParser()
+	*/
+	public PayloadParser createPayloadParser() {
+		return (new ChatStateParser());
+	}
+}
+
diff --git a/src/com/isode/stroke/parser/payloadparsers/FullPayloadParserFactoryCollection.java b/src/com/isode/stroke/parser/payloadparsers/FullPayloadParserFactoryCollection.java
index e9d0fc1..5236d42 100644
--- a/src/com/isode/stroke/parser/payloadparsers/FullPayloadParserFactoryCollection.java
+++ b/src/com/isode/stroke/parser/payloadparsers/FullPayloadParserFactoryCollection.java
@@ -47,7 +47,7 @@ public class FullPayloadParserFactoryCollection extends PayloadParserFactoryColl
 	//addFactory(new VCardUpdateParserFactory());
 	//addFactory(new VCardParserFactory());
 	//addFactory(new PrivateStorageParserFactory(this));
-	//addFactory(new ChatStateParserFactory());
+	addFactory(new ChatStateParserFactory());
 	//addFactory(new DelayParserFactory());
 	addFactory(new MUCUserPayloadParserFactory(this));
 	addFactory(new MUCOwnerPayloadParserFactory(this));
diff --git a/src/com/isode/stroke/serializer/payloadserializers/ChatStateSerializer.java b/src/com/isode/stroke/serializer/payloadserializers/ChatStateSerializer.java
new file mode 100644
index 0000000..f11ccea
--- /dev/null
+++ b/src/com/isode/stroke/serializer/payloadserializers/ChatStateSerializer.java
@@ -0,0 +1,49 @@
+/*
+ * 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.serializer.payloadserializers;
+
+import com.isode.stroke.serializer.GenericPayloadSerializer;
+import com.isode.stroke.elements.ChatState;
+import com.isode.stroke.base.NotNull;
+
+public class ChatStateSerializer extends GenericPayloadSerializer<ChatState> {
+
+	/**
+	* CapsInfoSerializer();
+	*/
+	public ChatStateSerializer() {
+		super(ChatState.class);
+	}
+
+	/**
+	* @param chatState, notnull
+	*/
+	@Override
+	protected String serializePayload(ChatState chatState) {
+		NotNull.exceptIfNull(chatState, "chatState");
+		String result = "<";
+		ChatState.ChatStateType state = chatState.getChatState();
+		if (state == ChatState.ChatStateType.Active) {
+			result = result.concat("active");
+		} else if (state == ChatState.ChatStateType.Composing) {
+			result = result.concat("composing");
+		} else if (state == ChatState.ChatStateType.Paused) {
+			result = result.concat("paused");
+		} else if (state == ChatState.ChatStateType.Inactive) {
+			result = result.concat("inactive");	
+		} else if (state == ChatState.ChatStateType.Gone) {
+			result = result.concat("gone");
+		}
+		result = result.concat(" xmlns=\"http://jabber.org/protocol/chatstates\"/>");
+		return result;
+	}
+} 
+\ No newline at end of file
diff --git a/src/com/isode/stroke/serializer/payloadserializers/FullPayloadSerializerCollection.java b/src/com/isode/stroke/serializer/payloadserializers/FullPayloadSerializerCollection.java
index 83a252f..0b62e0f 100644
--- a/src/com/isode/stroke/serializer/payloadserializers/FullPayloadSerializerCollection.java
+++ b/src/com/isode/stroke/serializer/payloadserializers/FullPayloadSerializerCollection.java
@@ -23,7 +23,7 @@ public class FullPayloadSerializerCollection extends PayloadSerializerCollection
         //addSerializer(new IBBSerializer());
 	addSerializer(new BodySerializer());
 	addSerializer(new SubjectSerializer());
-	//addSerializer(new ChatStateSerializer());
+	addSerializer(new ChatStateSerializer());
 	//addSerializer(new PrioritySerializer());
 	addSerializer(new ErrorSerializer());
 	addSerializer(new RosterSerializer());