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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
package complex.loadAllDocuments;
import com.sun.star.task.XInteractionHandler;
import com.sun.star.uno.AnyConverter;
/**
* Implemets a simple interaction handler,
* which can abort all incoming interactions only ... but make it possible to
* log it. So it can be used for debug and test purposes.
*/
public class InteractionHandler implements XInteractionHandler
{
// ____________________
/**
* @const RETRY_COUNT it defines the max count of
* retrying of an interaction
*/
private static final int RETRY_COUNT = 3;
// ____________________
/**
* @member m_aRequest the origianl interaction request
* safed for later analyzing
* @member m_bWasUsed true if the interaction handler was used
* @member m_nTry count using of RETRY continuations
*/
private Object m_aRequest ;
private int m_nTry ;
private boolean m_bWasUsed ;
/**
* ctor
* It's initialize an object of this class with default values
* and set the protocol stack. So the outside code can check
* if this handler was used or not.
*/
public InteractionHandler()
{
m_aRequest = null ;
m_nTry = 0 ;
m_bWasUsed = false;
}
/**
* Called to start the interaction, because the outside code whish to solve
* a detected problem or to inform the user about something.
* We save the information here and can handle two well known continuations
* only.
* [abort and retry].
*
* @param xRequest
* describe the interaction
*/
public void handle(com.sun.star.task.XInteractionRequest xRequest)
{
m_bWasUsed = true;
// first sav thje original request
// Our user can use this information later for some debug analyzing
Object aRequest = xRequest.getRequest();
synchronized(this)
{
m_aRequest = aRequest;
}
// analyze the possible continuations.
// We can abort all incoming interactions only.
// But additional we can try to continue it several times too.
// Of course after e.g. three loops we have to stop and abort it.
com.sun.star.task.XInteractionContinuation[] lContinuations = xRequest.getContinuations();
com.sun.star.task.XInteractionAbort xAbort = null;
com.sun.star.task.XInteractionRetry xRetry = null;
com.sun.star.uno.Type xAbortType = new com.sun.star.uno.Type(com.sun.star.task.XInteractionAbort.class);
com.sun.star.uno.Type xRetryType = new com.sun.star.uno.Type(com.sun.star.task.XInteractionRetry.class);
for (int i=0; i<lContinuations.length; ++i)
{
try
{
if (xAbort == null)
xAbort = (com.sun.star.task.XInteractionAbort)AnyConverter.toObject(xAbortType, lContinuations[i]);
if (xRetry == null)
xRetry = (com.sun.star.task.XInteractionRetry)AnyConverter.toObject(xRetryType, lContinuations[i]);
}
catch(com.sun.star.lang.IllegalArgumentException exArg) {}
}
// try it again, but only if it wasn't tried to much before.
if (xRetry != null)
{
synchronized(this)
{
if (m_nTry < RETRY_COUNT)
{
++m_nTry;
xRetry.select();
return;
}
}
}
// otherwise we can abort this interaction only
if (xAbort != null)
{
xAbort.select();
}
}
public boolean wasUsed() {
return m_bWasUsed;
}
}
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