org.mortbay.cometd.IFrameTransport Maven / Gradle / Ivy

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package org.mortbay.cometd;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

public class IFrameTransport extends AbstractTransport
{
    PrintWriter _writer;
    boolean _initialized=false;

    public void setResponse(HttpServletResponse response) throws IOException
    {
        _initialized=false;
        super.setResponse(response);
    }

    private void init(Map reply) throws IOException
    {
        if (_initialized)
            return;
        _initialized=true;
        
        String channel=(String)reply.get("channel");
        if (!"/meta/connect".equals(channel)&&!"/meta/reconnect".equals(channel))
            reply=null;

        getResponse().setContentType("text/html; charset=UTF-8");
        _writer=getResponse().getWriter();

        _writer.println("");
        _writer.println("");
        _writer.println("");
        _writer.println("");
        _writer.println("cometd: over jetty");

        if (reply!=null)
        {
            _writer.write("");
        }
        _writer.println("");
        _writer.println("");
        _writer.flush();
    }

    public void send(Map reply) throws IOException
    {
        if (!_initialized)
            init(reply);
        else
        {
            _writer.write("

");
            for (int i=0; i<16; i++)
                _writer.write("                                                                                                                                ");
            _writer.write("
");
            _writer.flush();
        }
    }

    public void send(List replies) throws IOException
    {
        if (replies==null)
            return;
        
        int m=0;
        
        if (!_initialized)
        {
            if (replies.size()>0)
                init((Map)replies.get(m++));
            else
                init(null);
        }
        
        if (replies.size()>m)
        {
            _writer.write("

");
            for (int i=0; i<16; i++)
                _writer
                        .write("                                                                                                                                ");
            _writer.write("
");
            _writer.flush();
        }
    }

    public void complete() throws IOException
    {
        // _writer.write("");
        _writer.write("");
        _writer.write("");
        _writer.flush();
    }

    public boolean keepAlive() throws IOException
    {
        return false;
    }

    public void initTunnel(HttpServletResponse response) throws IOException
    {
        response.setContentType("text/html; charset=utf-8");
        _writer=response.getWriter();
        _writer.println("");
        _writer.println("");
        _writer.println("");
        _writer.println(" ");
        _writer.println("  cometd: The Long Tail of Comet");
        _writer.println("  ");
        _writer.println("  ");
        _writer.println(" ");
        _writer.println(" ");
        _writer.println("  cometd: The Long Tail of Comet");
        _writer.println(" ");
        _writer.println("");

    }

}