comthread.java

jacob is a connection between java and windows

/*
 * Copyright (c) 1999 Dan Adler, 315 E72 St. NY, NY, 10021, USA.
 * mailto:[e-mail]. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in 
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Redistributions in any form must be accompanied by information on
 *    how to obtain complete source code for the JACOB software.
 *
 * Redistribution of the JACOB software is not permitted as part of any
 * commercial product that is targeted primarily at Java developers.
 * Such products include, but are not limited to: Java virtual machines,
 * integrated development environments, code libraries, and application
 * server products. Licensing terms for such distribution may be
 * obtained from the copyright holder.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
package com.jacob.com;
import java.util.Hashtable;
import java.util.Vector;

public abstract class ComThread
{
    private static final int MTA = 0x0; 
    private static final int STA = 0x2; 

    public static boolean haveSTA = false;
    public static MainSTA mainSTA = null;

    /**
     * Initialize the current java thread to be part of the 
     * Multi-threaded COM Apartment
     */
    public static synchronized void InitMTA()
    {
      InitMTA(false);
    }

    /**
     * Initialize the current java thread to be an STA
     */
    public static synchronized void InitSTA()
    {
      InitSTA(false);
    }

    /**
     * Initialize the current java thread to be part of the 
     * Multi-threaded COM Apartment, if createMainSTA is true,
     * create a separate MainSTA
     * thread that will house all Apartment Threaded components
     */
    public static synchronized void InitMTA(boolean createMainSTA)
    {
      Init(createMainSTA, MTA);
    }

    /**
     * Initialize the current java thread to be an STA
     * COM Apartment, if createMainSTA is true,
     * create a separate MainSTA
     * thread that will house all Apartment Threaded components
     */
    public static synchronized void InitSTA(boolean createMainSTA)
    {
      Init(createMainSTA, STA);
    }

    public static synchronized void startMainSTA()
    {
      mainSTA = new MainSTA();
      haveSTA = true;
    }

    public static synchronized void quitMainSTA()
    {
      if (mainSTA != null) mainSTA.quit();
    }

    /**
     * Initialize the current java thread to be part of the 
     * MTA/STA COM Apartment
     */
    public static synchronized void Init(boolean createMainSTA, int mode)
    {
      if (createMainSTA && !haveSTA)
      {
        // if the current thread is going to be in the MTA and there
        // is no STA thread yet, then create a main STA thread
        // to avoid COM creating its own
        startMainSTA();
      }
      //System.out.println("before Init: "+mode);
      doCoInitialize(mode);
      //System.out.println("after Init");
      ROT.addThread();
      //System.out.println("after ROT.addThread");
    }

    /**
     * Call CoUninitialize to release this java thread from COM
     */
    public static synchronized void Release()
    {
      //System.out.println("before clearObjects");
      ROT.clearObjects();
      //System.out.println("before UnInit");
      doCoUninitialize();
      //System.out.println("after UnInit");
    }

    public static native void doCoInitialize(int threadModel);
    public static native void doCoUninitialize();

    static {
      System.loadLibrary("jacob");
    }
}