calldispatcher.java.svn-base

开源项目openfire的完整源程序

/* ====================================================================
 * The Apache Software License, Version 1.1
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 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 *    notice, this list of conditions and the following disclaimer in
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 *    distribution.
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 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * SUCH DAMAGE.
 * ====================================================================
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 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
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package net.java.sipmack.sip;

import net.java.sipmack.sip.event.CallListener;
import net.java.sipmack.sip.event.CallStateEvent;

import javax.sip.Dialog;
import javax.sip.message.Request;

import java.util.Enumeration;
import java.util.Hashtable;

/**
 * <p/>
 * Title: SIP COMMUNICATOR
 * </p>
 * <p/>
 * Description:JAIN-SIP Audio/Video phone application
 * </p>
 * <p/>
 * Copyright: Copyright (c) 2003
 * </p>
 * <p/>
 * Organisation: LSIIT laboratory (http://lsiit.u-strasbg.fr)
 * </p>
 * <p/>
 * Network Research Team (http://www-r2.u-strasbg.fr))
 * </p>
 * <p/>
 * Louis Pasteur University - Strasbourg - France
 * </p>
 *
 * @author Emil Ivov (http://www.emcho.com)
 * @version 1.1
 */
class CallDispatcher implements CallListener {

    /**
     * All currently active calls.
     */
    Hashtable calls = new Hashtable();

    Call createCall(Dialog dialog, Request initialRequest) {
        Call call = null;
        if (dialog.getDialogId() != null) {
            call = findCall(dialog);
        }
        if (call == null) {
            call = new Call();
        }
        call.setDialog(dialog);
        call.setInitialRequest(initialRequest);
        // call.setState(Call.DIALING);
        calls.put(new Integer(call.getID()), call);
        call.addStateChangeListener(this);
        return call;
    }

    Call getCall(int id) {
        return (Call) calls.get(new Integer(id));
    }

    /**
     * Find the call that contains the specified dialog.
     *
     * @param dialog the dialog whose containg call is to be found
     * @return the call that contains the specified dialog.
     */
    Call findCall(Dialog dialog) {
        if (dialog == null) {
            return null;
        }
        synchronized (calls) {
            Enumeration callsEnum = calls.elements();
            while (callsEnum.hasMoreElements()) {
                Call item = (Call) callsEnum.nextElement();
                if (item.getDialog().getCallId().equals(dialog.getCallId())) {
                    return item;
                }
            }
        }
        return null;
    }

    /**
     * Find the call with the specified CallID header value.
     *
     * @param callId the CallID header value of the searched call.
     * @return the call with the specified CallID header value.
     */
    Call findCall(String callId) {
        if (callId == null) {
            return null;
        }
        synchronized (calls) {
            Enumeration callsEnum = calls.elements();
            while (callsEnum.hasMoreElements()) {
                Call item = (Call) callsEnum.nextElement();
                if (item.getDialog().getCallId().equals(callId)) {
                    return item;
                }
            }
        }
        return null;

    }

    Object[] getAllCalls() {
        return calls.keySet().toArray();
    }

    private void removeCall(Call call) {
        calls.remove(new Integer(call.getID()));
    }

    // ================================ DialogListener =================
    public void callStateChanged(CallStateEvent evt) {
        if (evt.getNewState().equals(Call.DISCONNECTED)) {
            removeCall(evt.getSourceCall());
        }
    }
}