diff options
Diffstat (limited to 'odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/OnewayExecutor.java')
| -rw-r--r-- | odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/OnewayExecutor.java | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/OnewayExecutor.java b/odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/OnewayExecutor.java new file mode 100644 index 000000000..4eb7f80a7 --- /dev/null +++ b/odk/examples/DevelopersGuide/OfficeDev/DesktopEnvironment/OnewayExecutor.java @@ -0,0 +1,189 @@ +/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * The Contents of this file are made available subject to the terms of + * the BSD license. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * 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. Neither the name of Sun Microsystems, Inc. nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "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 OWNER OR CONTRIBUTORS 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. + * + *************************************************************************/ + +import java.util.ArrayList; + +// __________ Implementation __________ + +/** + * It's not allowed to call synchronous back inside a oneway interface call. + * (see IOnewayLink too). So we start a thread (implemented by this class), which + * gets all necessary parameters from the original called object and + * call it back later inside his run() method. So the execution of such oneway call + * will be asynchronous. It works in a generic way and can be used or any type + * of oneway request. Because the source and the target of this call-link knows, + * which method was used and which parameters must be handled. + * + */ +class OnewayExecutor extends Thread +{ + + + /** + * const + * We define some request for some well known oneway interface + * calls here too. So they mustn't be declared more than ones. + * Of course it's not necessary to use it ... but why not :-) + */ + + public static final int REQUEST_FRAMEACTION = 1 ; + + + + public static final int REQUEST_DISPATCH = 5 ; + + + + + + + /** + * @member m_rLink the object, which wishes to be called back by this thread + * @member m_nRequest describes the type of the original request (means the + * called oneway method) + * @member m_lParams list of parameters of the original request + */ + private final IOnewayLink m_rLink ; + private final int m_nRequest ; + private final ArrayList<Object> m_lParams ; + + + + /** + * ctor + * It's initialize this thread with all necessary parameters. + * It gets the object, which wishes to be called back and the type + * and parameters of the original request. + * + * @param nRequest + * The two user of this callback can define a unique number, + * which identify the type of original interface method. + * So the called interface object can decide, which action will be + * necessary. + * + * @param lParams + * If the original method used parameters, they will be coded here in + * a generic way. Only the called interface object know (it depends + * from the original request - see nRequest too), how this list must + * be interpreted. + * Note: Atomic types (e.g. int, long) will be transported as objects + * too (Integer, Long)! + */ + public OnewayExecutor( IOnewayLink rLink , + int nRequest , + ArrayList<Object> lParams ) + { + m_rLink = rLink ; + m_nRequest = nRequest; + m_lParams = lParams ; + + if (m_rLink==null) + System.out.println("ctor ... m_rLink == null"); + if (m_lParams==null) + System.out.println("ctor ... m_lParams == null"); + } + + + + /** + * implements the thread function + * Here we call the internal set link object back and + * give him all necessary parameters. + * After that we die by ourselves ... + */ + @Override + public void run() + { + if (m_rLink==null) + System.out.println("run ... m_rLink == null"); + if (m_lParams==null) + System.out.println("run ... m_lParams == null"); + + if (m_rLink!=null) + m_rLink.execOneway( m_nRequest, m_lParams ); + } + + + + /** + * static helper! + * To make conversion of the generic parameter list to the original + * one easier - you can use this helper methods. They know how such list + * must be coded. It's not a must to use it - but you can ... + */ + + + + public static ArrayList<Object> encodeDispatch( + com.sun.star.util.URL[] aURL, + com.sun.star.beans.PropertyValue[][] lArgs) + { + int nLength = lArgs.length+1; + int nPos = 0; + ArrayList<Object> lParams = new ArrayList<Object>(nLength); + + lParams.add( aURL[0] ); + --nLength; + + while (nLength>0) + { + lParams.add( lArgs[0][nPos] ); + --nLength; + ++nPos ; + } + return lParams; + } + + public static void decodeDispatch( + ArrayList<Object> lParams, + com.sun.star.util.URL[] aURL, + com.sun.star.beans.PropertyValue[][] lArgs) + { + int nLength = lParams.size()-1; + int nPos = 0; + + lArgs[0] = new com.sun.star.beans.PropertyValue[nLength]; + aURL[0] = (com.sun.star.util.URL) lParams.get(0); + + while (nPos<nLength) + { + lArgs[0][nPos] = (com.sun.star.beans.PropertyValue) + (lParams.get(nPos+1)); + ++nPos; + } + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |