/**
* {@inheritDoc}
*
* <p>Handles messages received from other clients on this channel, as well as server
* notifications about other clients joining and leaving this channel.
*/
public void receivedMessage(ClientChannel channel, SessionId sender, byte[] message) {
ByteBuffer buf = ByteBuffer.wrap(message);
byte opcode = buf.get();
switch (opcode) {
case OP_JOINED:
memberList.addClient(ChatClient.getSessionId(buf));
break;
case OP_LEFT:
memberList.removeClient(ChatClient.getSessionId(buf));
break;
case OP_MESSAGE:
{
byte[] contents = new byte[buf.remaining()];
buf.get(contents);
// The server sends us a separate, private echoback in this
// application; those were from us originally, so use our
// own SessionId (instead of null).
outputArea.append(
String.format(
"%s: %s\n",
(sender != null) ? sender : myChatClient.getSessionId(), new String(contents)));
break;
}
default:
System.err.format("Unknown opcode 0x%02X\n", opcode);
}
}
/**
* Constructs a new ChatChannelFrame as a wrapper around the given channel.
*
* @param client the parent {@code ChatClient} of this frame.
* @param channel the channel that this class will manage.
*/
public ChatChannelFrame(ChatClient client, ClientChannel channel) {
super("Channel: " + channel.getName());
myChatClient = client;
myChannel = channel;
Container c = getContentPane();
c.setLayout(new BorderLayout());
JPanel eastPanel = new JPanel();
eastPanel.setLayout(new BorderLayout());
c.add(eastPanel, BorderLayout.EAST);
eastPanel.add(new JLabel("Users"), BorderLayout.NORTH);
memberList = new MemberList();
memberList.addMouseListener(myChatClient.getDCCMouseListener());
eastPanel.add(new JScrollPane(memberList), BorderLayout.CENTER);
JPanel southPanel = new JPanel();
c.add(southPanel, BorderLayout.SOUTH);
southPanel.setLayout(new GridLayout(1, 0));
inputField = new JTextField();
southPanel.add(inputField);
outputArea = new JTextArea();
c.add(new JScrollPane(outputArea), BorderLayout.CENTER);
inputField.addActionListener(this);
setSize(400, 400);
setClosable(true);
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
addInternalFrameListener(new FrameClosingListener(this));
setResizable(true);
setVisible(true);
}