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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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 .
+ */
+
+#include <jobs/job.hxx>
+#include <jobs/jobresult.hxx>
+
+#include <com/sun/star/frame/Desktop.hpp>
+#include <com/sun/star/frame/TerminationVetoException.hpp>
+#include <com/sun/star/task/XJob.hpp>
+#include <com/sun/star/task/XAsyncJob.hpp>
+#include <com/sun/star/util/CloseVetoException.hpp>
+#include <com/sun/star/util/XCloseBroadcaster.hpp>
+#include <com/sun/star/util/XCloseable.hpp>
+#include <com/sun/star/lang/DisposedException.hpp>
+
+#include <comphelper/sequence.hxx>
+#include <sal/log.hxx>
+#include <tools/diagnose_ex.h>
+#include <vcl/svapp.hxx>
+
+namespace framework{
+
+/**
+ @short standard ctor
+ @descr It initialize this new instance. But it set some generic parameters here only.
+ Specialized information (e.g. the alias or service name ofthis job) will be set
+ later using the method setJobData().
+
+ @param xContext
+ reference to the uno service manager
+
+ @param xFrame
+ reference to the frame, in which environment we run
+ (May be null!)
+*/
+Job::Job( /*IN*/ const css::uno::Reference< css::uno::XComponentContext >& xContext ,
+ /*IN*/ const css::uno::Reference< css::frame::XFrame >& xFrame )
+ : m_aJobCfg (xContext )
+ , m_xContext (xContext )
+ , m_xFrame (xFrame )
+ , m_bListenOnDesktop (false )
+ , m_bListenOnFrame (false )
+ , m_bListenOnModel (false )
+ , m_bPendingCloseFrame (false )
+ , m_bPendingCloseModel (false )
+ , m_eRunState (E_NEW )
+{
+}
+
+/**
+ @short standard ctor
+ @descr It initialize this new instance. But it set some generic parameters here only.
+ Specialized information (e.g. the alias or service name ofthis job) will be set
+ later using the method setJobData().
+
+ @param xContext
+ reference to the uno service manager
+
+ @param xModel
+ reference to the model, in which environment we run
+ (May be null!)
+*/
+Job::Job( /*IN*/ const css::uno::Reference< css::uno::XComponentContext >& xContext ,
+ /*IN*/ const css::uno::Reference< css::frame::XModel >& xModel )
+ : m_aJobCfg (xContext )
+ , m_xContext (xContext )
+ , m_xModel (xModel )
+ , m_bListenOnDesktop (false )
+ , m_bListenOnFrame (false )
+ , m_bListenOnModel (false )
+ , m_bPendingCloseFrame (false )
+ , m_bPendingCloseModel (false )
+ , m_eRunState (E_NEW )
+{
+}
+
+/**
+ @short superfluous!
+ @descr Releasing of memory and reference must be done inside die() call.
+ Otherwise it's a bug.
+*/
+Job::~Job()
+{
+}
+
+/**
+ @short set (or delete) a listener for sending dispatch result events
+ @descr Because this object is used in a wrapped mode ... the original listener
+ for such events can't be registered here directly. Because the
+ listener expect to get the original object given as source of the event.
+ That's why we get this source here too, to fake(!) it at sending time!
+
+ @param xListener
+ the original listener for dispatch result events
+
+ @param xSourceFake
+ our user, which got the registration request for this listener
+*/
+void Job::setDispatchResultFake( /*IN*/ const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ,
+ /*IN*/ const css::uno::Reference< css::uno::XInterface >& xSourceFake )
+{
+ SolarMutexGuard g;
+
+ // reject dangerous calls
+ if (m_eRunState != E_NEW)
+ {
+ SAL_INFO("fwk", "Job::setJobData(): job may still running or already finished");
+ return;
+ }
+
+ m_xResultListener = xListener;
+ m_xResultSourceFake = xSourceFake;
+}
+
+void Job::setJobData( const JobData& aData )
+{
+ SolarMutexGuard g;
+
+ // reject dangerous calls
+ if (m_eRunState != E_NEW)
+ {
+ SAL_INFO("fwk", "Job::setJobData(): job may still running or already finished");
+ return;
+ }
+
+ m_aJobCfg = aData;
+}
+
+/**
+ @short runs the job
+ @descr It doesn't matter, if the job is an asynchronous or
+ synchronous one. This method returns only if it was finished
+ or cancelled.
+
+ @param lDynamicArgs
+ optional arguments for job execution
+ In case the represented job is a configured one (which uses static
+ arguments too) all information will be merged!
+*/
+void Job::execute( /*IN*/ const css::uno::Sequence< css::beans::NamedValue >& lDynamicArgs )
+{
+ /* SAFE { */
+ SolarMutexResettableGuard aWriteLock;
+
+ // reject dangerous calls
+ if (m_eRunState != E_NEW)
+ {
+ SAL_INFO("fwk", "Job::execute(): job may still running or already finished");
+ return;
+ }
+
+ // create the environment and mark this job as running ...
+ m_eRunState = E_RUNNING;
+ impl_startListening();
+
+ css::uno::Reference< css::task::XAsyncJob > xAJob;
+ css::uno::Reference< css::task::XJob > xSJob;
+ css::uno::Sequence< css::beans::NamedValue > lJobArgs = impl_generateJobArgs(lDynamicArgs);
+
+ // It's necessary to hold us self alive!
+ // Otherwise we might die by ref count ...
+ css::uno::Reference< css::task::XJobListener > xThis(static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+
+ try
+ {
+ // create the job
+ // We must check for the supported interface on demand!
+ // But we prefer the synchronous one ...
+ m_xJob = m_xContext->getServiceManager()->createInstanceWithContext(m_aJobCfg.getService(), m_xContext);
+ xSJob.set(m_xJob, css::uno::UNO_QUERY);
+ if (!xSJob.is())
+ xAJob.set(m_xJob, css::uno::UNO_QUERY);
+
+ // execute it asynchronous
+ if (xAJob.is())
+ {
+ m_aAsyncWait.reset();
+ aWriteLock.clear();
+ /* } SAFE */
+ xAJob->executeAsync(lJobArgs, xThis);
+ // wait for finishing this job - so this method
+ // does the same for synchronous and asynchronous jobs!
+ m_aAsyncWait.wait();
+ aWriteLock.reset();
+ /* SAFE { */
+ // Note: Result handling was already done inside the callback!
+ }
+ // execute it synchron
+ else if (xSJob.is())
+ {
+ aWriteLock.clear();
+ /* } SAFE */
+ css::uno::Any aResult = xSJob->execute(lJobArgs);
+ aWriteLock.reset();
+ /* SAFE { */
+ impl_reactForJobResult(aResult);
+ }
+ }
+ #if OSL_DEBUG_LEVEL > 0
+ catch(const css::uno::Exception&)
+ {
+ TOOLS_INFO_EXCEPTION("fwk", "Job::execute(): Got exception during job execution");
+ }
+ #else
+ catch(const css::uno::Exception&)
+ {}
+ #endif
+
+ // deinitialize the environment and mark this job as finished...
+ // but don't overwrite any information about STOPPED or might DISPOSED jobs!
+ impl_stopListening();
+ if (m_eRunState == E_RUNNING)
+ m_eRunState = E_STOPPED_OR_FINISHED;
+
+ // If we got a close request from our frame or model...
+ // but we disagreed with that by throwing a veto exception...
+ // and got the ownership...
+ // we have to close the resource frame or model now -
+ // and to disable ourself!
+ if (m_bPendingCloseFrame)
+ {
+ m_bPendingCloseFrame = false;
+ css::uno::Reference< css::util::XCloseable > xClose(m_xFrame, css::uno::UNO_QUERY);
+ if (xClose.is())
+ {
+ try
+ {
+ xClose->close(true);
+ }
+ catch(const css::util::CloseVetoException&) {}
+ }
+ }
+
+ if (m_bPendingCloseModel)
+ {
+ m_bPendingCloseModel = false;
+ css::uno::Reference< css::util::XCloseable > xClose(m_xModel, css::uno::UNO_QUERY);
+ if (xClose.is())
+ {
+ try
+ {
+ xClose->close(true);
+ }
+ catch(const css::util::CloseVetoException&) {}
+ }
+ }
+
+ aWriteLock.clear();
+ /* SAFE { */
+
+ // release this instance ...
+ die();
+}
+
+/**
+ @short kill this job
+ @descr It doesn't matter if this request is called from inside or
+ from outside. We release our internal structures and stop
+ every activity. After doing so - this instance will not be
+ usable any longer! Of course we try to handle further requests
+ carefully. Maybe someone else holds a reference to us ...
+*/
+void Job::die()
+{
+ SolarMutexGuard g;
+
+ impl_stopListening();
+
+ if (m_eRunState != E_DISPOSED)
+ {
+ try
+ {
+ css::uno::Reference< css::lang::XComponent > xDispose(m_xJob, css::uno::UNO_QUERY);
+ if (xDispose.is())
+ {
+ xDispose->dispose();
+ m_eRunState = E_DISPOSED;
+ }
+ }
+ catch(const css::lang::DisposedException&)
+ {
+ m_eRunState = E_DISPOSED;
+ }
+ }
+
+ m_xJob.clear();
+ m_xFrame.clear();
+ m_xModel.clear();
+ m_xDesktop.clear();
+ m_xResultListener.clear();
+ m_xResultSourceFake.clear();
+ m_bPendingCloseFrame = false;
+ m_bPendingCloseModel = false;
+}
+
+/**
+ @short generates list of arguments for job execute
+ @descr There exist a set of information, which can be needed by a job.
+ a) it's static configuration data (Equals for all jobs. )
+ b) it's specific configuration data (Different for every job.)
+ c) some environment values (e.g. the frame, for which this job was started)
+ d) any other dynamic data (e.g. parameters of a dispatch() request)
+ We collect all this information and generate one list which include all others.
+
+ @param lDynamicArgs
+ list of dynamic arguments (given by a corresponding dispatch() call)
+ Can be empty too.
+
+ @return A list which includes all mentioned sub lists.
+*/
+css::uno::Sequence< css::beans::NamedValue > Job::impl_generateJobArgs( /*IN*/ const css::uno::Sequence< css::beans::NamedValue >& lDynamicArgs )
+{
+ css::uno::Sequence< css::beans::NamedValue > lAllArgs;
+
+ /* SAFE { */
+ SolarMutexClearableGuard aReadLock;
+
+ // the real structure of the returned list depends from the environment of this job!
+ JobData::EMode eMode = m_aJobCfg.getMode();
+
+ // Create list of environment variables. This list must be part of the
+ // returned structure every time... but some of its members are optional!
+ css::uno::Sequence< css::beans::NamedValue > lEnvArgs(1);
+ lEnvArgs[0].Name = "EnvType";
+ lEnvArgs[0].Value <<= m_aJobCfg.getEnvironmentDescriptor();
+
+ if (m_xFrame.is())
+ {
+ sal_Int32 c = lEnvArgs.getLength();
+ lEnvArgs.realloc(c+1);
+ lEnvArgs[c].Name = "Frame";
+ lEnvArgs[c].Value <<= m_xFrame;
+ }
+ if (m_xModel.is())
+ {
+ sal_Int32 c = lEnvArgs.getLength();
+ lEnvArgs.realloc(c+1);
+ lEnvArgs[c].Name = "Model";
+ lEnvArgs[c].Value <<= m_xModel;
+ }
+ if (eMode==JobData::E_EVENT)
+ {
+ sal_Int32 c = lEnvArgs.getLength();
+ lEnvArgs.realloc(c+1);
+ lEnvArgs[c].Name = "EventName";
+ lEnvArgs[c].Value <<= m_aJobCfg.getEvent();
+ }
+
+ // get the configuration data from the job data container ... if possible
+ // Means: if this job has any configuration data. Note: only really
+ // filled lists will be set to the return structure at the end of this method.
+ css::uno::Sequence< css::beans::NamedValue > lConfigArgs;
+ std::vector< css::beans::NamedValue > lJobConfigArgs;
+ if (eMode==JobData::E_ALIAS || eMode==JobData::E_EVENT)
+ {
+ lConfigArgs = m_aJobCfg.getConfig();
+ lJobConfigArgs = m_aJobCfg.getJobConfig();
+ }
+
+ aReadLock.clear();
+ /* } SAFE */
+
+ // Add all valid (not empty) lists to the return list
+ if (lConfigArgs.hasElements())
+ {
+ sal_Int32 nLength = lAllArgs.getLength();
+ lAllArgs.realloc(nLength+1);
+ lAllArgs[nLength].Name = "Config";
+ lAllArgs[nLength].Value <<= lConfigArgs;
+ }
+ if (!lJobConfigArgs.empty())
+ {
+ sal_Int32 nLength = lAllArgs.getLength();
+ lAllArgs.realloc(nLength+1);
+ lAllArgs[nLength].Name = "JobConfig";
+ lAllArgs[nLength].Value <<= comphelper::containerToSequence(lJobConfigArgs);
+ }
+ if (lEnvArgs.hasElements())
+ {
+ sal_Int32 nLength = lAllArgs.getLength();
+ lAllArgs.realloc(nLength+1);
+ lAllArgs[nLength].Name = "Environment";
+ lAllArgs[nLength].Value <<= lEnvArgs;
+ }
+ if (lDynamicArgs.hasElements())
+ {
+ sal_Int32 nLength = lAllArgs.getLength();
+ lAllArgs.realloc(nLength+1);
+ lAllArgs[nLength].Name = "DynamicData";
+ lAllArgs[nLength].Value <<= lDynamicArgs;
+ }
+
+ return lAllArgs;
+}
+
+/**
+ @short analyze the given job result and change the job configuration
+ @descr Note: Some results can be handled only, if this job has a valid configuration!
+ For "not configured jobs" (means pure services) they can be ignored.
+ But these cases are handled by our JobData member. We can call it every time.
+ It does the right things automatically. E.g. if the job has no configuration ...
+ it does nothing during setJobConfig()!
+
+ @param aResult
+ the job result for analyzing
+*/
+void Job::impl_reactForJobResult( /*IN*/ const css::uno::Any& aResult )
+{
+ SolarMutexGuard g;
+
+ // analyze the result set ...
+ JobResult aAnalyzedResult(aResult);
+
+ // some of the following operations will be supported for different environments
+ // or different type of jobs only.
+ JobData::EEnvironment eEnvironment = m_aJobCfg.getEnvironment();
+
+ // write back the job specific configuration data ...
+ // If the environment allow it and if this job has a configuration!
+ if (
+ (m_aJobCfg.hasConfig() ) &&
+ (aAnalyzedResult.existPart(JobResult::E_ARGUMENTS))
+ )
+ {
+ m_aJobCfg.setJobConfig(aAnalyzedResult.getArguments());
+ }
+
+ // disable a job for further executions.
+ // Note: this option is available inside the environment EXECUTOR only
+ if (
+// (eEnvironment == JobData::E_EXECUTION ) &&
+ (m_aJobCfg.hasConfig() ) &&
+ (aAnalyzedResult.existPart(JobResult::E_DEACTIVATE))
+ )
+ {
+ m_aJobCfg.disableJob();
+ }
+
+ // notify any interested listener with the may given result state.
+ // Note: this option is available inside the environment DISPATCH only
+ if (
+ (eEnvironment == JobData::E_DISPATCH ) &&
+ (m_xResultListener.is() ) &&
+ (aAnalyzedResult.existPart(JobResult::E_DISPATCHRESULT))
+ )
+ {
+ // Attention: Because the listener expect that the original object send this event ...
+ // and we nor the job are the right ones ...
+ // our user has set itself before. So we can fake this source address!
+ css::frame::DispatchResultEvent aEvent = aAnalyzedResult.getDispatchResult();
+ aEvent.Source = m_xResultSourceFake;
+ m_xResultListener->dispatchFinished(aEvent);
+ }
+}
+
+/**
+ @short starts listening for office shutdown and closing of our
+ given target frame (if it's a valid reference)
+ @descr We will register ourself as terminate listener
+ at the global desktop instance. That will hold us
+ alive and additional we get the information, if the
+ office wish to shutdown. If then an internal job
+ is running we will have the chance to suppress that
+ by throwing a veto exception. If our internal wrapped
+ job finished his work, we can release this listener
+ connection.
+
+ Further we are listener for closing of the (possible valid)
+ given frame. We must be sure, that this resource won't be gone
+ if our internal job is still running.
+*/
+void Job::impl_startListening()
+{
+ SolarMutexGuard g;
+
+ // listening for office shutdown
+ if (!m_xDesktop.is() && !m_bListenOnDesktop)
+ {
+ try
+ {
+ m_xDesktop = css::frame::Desktop::create( m_xContext );
+ css::uno::Reference< css::frame::XTerminateListener > xThis(static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ m_xDesktop->addTerminateListener(xThis);
+ m_bListenOnDesktop = true;
+ }
+ catch(const css::uno::Exception&)
+ {
+ m_xDesktop.clear();
+ }
+ }
+
+ // listening for frame closing
+ if (m_xFrame.is() && !m_bListenOnFrame)
+ {
+ try
+ {
+ css::uno::Reference< css::util::XCloseBroadcaster > xCloseable(m_xFrame , css::uno::UNO_QUERY);
+ css::uno::Reference< css::util::XCloseListener > xThis (static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ if (xCloseable.is())
+ {
+ xCloseable->addCloseListener(xThis);
+ m_bListenOnFrame = true;
+ }
+ }
+ catch(const css::uno::Exception&)
+ {
+ m_bListenOnFrame = false;
+ }
+ }
+
+ // listening for model closing
+ if (!(m_xModel.is() && !m_bListenOnModel))
+ return;
+
+ try
+ {
+ css::uno::Reference< css::util::XCloseBroadcaster > xCloseable(m_xModel , css::uno::UNO_QUERY);
+ css::uno::Reference< css::util::XCloseListener > xThis (static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ if (xCloseable.is())
+ {
+ xCloseable->addCloseListener(xThis);
+ m_bListenOnModel = true;
+ }
+ }
+ catch(const css::uno::Exception&)
+ {
+ m_bListenOnModel = false;
+ }
+}
+
+/**
+ @short release listener connection for office shutdown
+ @descr see description of impl_startListening()
+*/
+void Job::impl_stopListening()
+{
+ SolarMutexGuard g;
+
+ // stop listening for office shutdown
+ if (m_xDesktop.is() && m_bListenOnDesktop)
+ {
+ try
+ {
+ css::uno::Reference< css::frame::XTerminateListener > xThis(static_cast< ::cppu::OWeakObject* >(this) , css::uno::UNO_QUERY);
+ m_xDesktop->removeTerminateListener(xThis);
+ m_xDesktop.clear();
+ m_bListenOnDesktop = false;
+ }
+ catch(const css::uno::Exception&)
+ {
+ }
+ }
+
+ // stop listening for frame closing
+ if (m_xFrame.is() && m_bListenOnFrame)
+ {
+ try
+ {
+ css::uno::Reference< css::util::XCloseBroadcaster > xCloseable(m_xFrame , css::uno::UNO_QUERY);
+ css::uno::Reference< css::util::XCloseListener > xThis (static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ if (xCloseable.is())
+ {
+ xCloseable->removeCloseListener(xThis);
+ m_bListenOnFrame = false;
+ }
+ }
+ catch(const css::uno::Exception&)
+ {
+ }
+ }
+
+ // stop listening for model closing
+ if (!(m_xModel.is() && m_bListenOnModel))
+ return;
+
+ try
+ {
+ css::uno::Reference< css::util::XCloseBroadcaster > xCloseable(m_xModel , css::uno::UNO_QUERY);
+ css::uno::Reference< css::util::XCloseListener > xThis (static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ if (xCloseable.is())
+ {
+ xCloseable->removeCloseListener(xThis);
+ m_bListenOnModel = false;
+ }
+ }
+ catch(const css::uno::Exception&)
+ {
+ }
+}
+
+/**
+ @short callback from any asynchronous executed job
+
+ @descr Our execute() method waits for this callback.
+ We have to react for the possible results here,
+ to kill the running job and disable the blocked condition
+ so execute() can be finished too.
+
+ @param xJob
+ the job, which was running and inform us now
+
+ @param aResult
+ its results
+*/
+void SAL_CALL Job::jobFinished( /*IN*/ const css::uno::Reference< css::task::XAsyncJob >& xJob ,
+ /*IN*/ const css::uno::Any& aResult )
+{
+ SolarMutexGuard g;
+
+ // It's necessary to check this.
+ // May this job was cancelled by any other reason
+ // some milliseconds before. :-)
+ if (m_xJob.is() && m_xJob==xJob)
+ {
+ // react for his results
+ // (means enable/disable it for further requests
+ // or save arguments or notify listener ...)
+ impl_reactForJobResult(aResult);
+
+ // Let the job die!
+ m_xJob.clear();
+ }
+
+ // And let the start method "execute()" finishing it's job.
+ // But do it every time. So any outside blocking code can finish
+ // his work too.
+ m_aAsyncWait.set();
+}
+
+/**
+ @short prevent internal wrapped job against office termination
+ @descr This event is broadcasted by the desktop instance and ask for an office termination.
+ If the internal wrapped job is still in progress, we disagree with that by throwing the
+ right veto exception. If not - we agree. But then we must be aware, that another event
+ notifyTermination() can follow. Then we have no chance to do the same. Then we have to
+ accept that and stop our work instandly.
+
+ @param aEvent
+ describes the broadcaster and must be the desktop instance
+
+ @throw TerminateVetoException
+ if our internal wrapped job is still running.
+ */
+void SAL_CALL Job::queryTermination( /*IN*/ const css::lang::EventObject& )
+{
+ SolarMutexGuard g;
+
+ // Otherwise try to close() it
+ css::uno::Reference< css::util::XCloseable > xClose(m_xJob, css::uno::UNO_QUERY);
+ if (xClose.is())
+ {
+ try
+ {
+ xClose->close(false);
+ m_eRunState = E_STOPPED_OR_FINISHED;
+ }
+ catch(const css::util::CloseVetoException&) {}
+ }
+
+ if (m_eRunState != E_STOPPED_OR_FINISHED)
+ {
+ css::uno::Reference< css::uno::XInterface > xThis(static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ throw css::frame::TerminationVetoException("job still in progress", xThis);
+ }
+}
+
+/**
+ @short inform us about office termination
+ @descr Instead of the method queryTermination(), here is no chance to disagree with that.
+ We have to accept it and cancel all current processes inside.
+ It can occur only, if job was not already started if queryTermination() was called here.
+ Then we had not thrown a veto exception. But now we must agree with this situation and break
+ all our internal processes. It's not a good idea to mark this instance as non startable any longer
+ inside queryTermination() if no job was running too. Because that would disable this job and may
+ the office does not really shutdown, because another listener has thrown the suitable exception.
+
+ @param aEvent
+ describes the broadcaster and must be the desktop instance
+ */
+void SAL_CALL Job::notifyTermination( /*IN*/ const css::lang::EventObject& )
+{
+ die();
+ // Do nothing else here. Our internal resources was released ...
+}
+
+/**
+ @short prevent internal wrapped job against frame closing
+ @descr This event is broadcasted by the frame instance and ask for closing.
+ If the internal wrapped job is still in progress, we disagree with that by throwing the
+ right veto exception. If not - we agree. But then we must be aware, that another event
+ notifyClosing() can follow. Then we have no chance to do the same. Then we have to
+ accept that and stop our work instandly.
+
+ @param aEvent
+ describes the broadcaster and must be the frame instance
+
+ @param bGetsOwnership
+ If it's set to <sal_True> and we throw the right veto exception, we have to close this frame later
+ if our internal processes will be finished. If it's set to <FALSE/> we can ignore it.
+
+ @throw CloseVetoException
+ if our internal wrapped job is still running.
+ */
+void SAL_CALL Job::queryClosing( const css::lang::EventObject& aEvent ,
+ sal_Bool bGetsOwnership )
+{
+ SolarMutexGuard g;
+
+ // do nothing, if no internal job is still running ...
+ // The frame or model can be closed then successfully.
+ if (m_eRunState != E_RUNNING)
+ return;
+
+ // try close() first at the job.
+ // The job can agree or disagree with this request.
+ css::uno::Reference< css::util::XCloseable > xClose(m_xJob, css::uno::UNO_QUERY);
+ if (xClose.is())
+ {
+ xClose->close(bGetsOwnership);
+ // Here we can say: "this job was stopped successfully". Because
+ // no veto exception was thrown!
+ m_eRunState = E_STOPPED_OR_FINISHED;
+ return;
+ }
+
+ // try dispose() then
+ // Here the job has no chance for a veto.
+ // But we must be aware of an "already disposed exception"...
+ try
+ {
+ css::uno::Reference< css::lang::XComponent > xDispose(m_xJob, css::uno::UNO_QUERY);
+ if (xDispose.is())
+ {
+ xDispose->dispose();
+ m_eRunState = E_DISPOSED;
+ }
+ }
+ catch(const css::lang::DisposedException&)
+ {
+ // the job was already disposed by any other mechanism !?
+ // But it's not interesting for us. For us this job is stopped now.
+ m_eRunState = E_DISPOSED;
+ }
+
+ if (m_eRunState != E_DISPOSED)
+ {
+ // analyze event source - to find out, which resource called queryClosing() at this
+ // job wrapper. We must bind a "pending close" request to this resource.
+ // Closing of the corresponding resource will be done if our internal job finish it's work.
+ m_bPendingCloseFrame = (m_xFrame.is() && aEvent.Source == m_xFrame);
+ m_bPendingCloseModel = (m_xModel.is() && aEvent.Source == m_xModel);
+
+ // throw suitable veto exception - because the internal job could not be cancelled.
+ css::uno::Reference< css::uno::XInterface > xThis(static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ throw css::util::CloseVetoException("job still in progress", xThis);
+ }
+
+ // No veto ...
+ // But don't call die() here or free our internal member.
+ // This must be done inside notifyClosing() only. Otherwise the
+ // might stopped job has no chance to return its results or
+ // call us back. We must give him the chance to finish it's work successfully.
+}
+
+/**
+ @short inform us about frame closing
+ @descr Instead of the method queryClosing(), here is no chance to disagree with that.
+ We have to accept it and cancel all current processes inside.
+
+ @param aEvent
+ describes the broadcaster and must be the frame or model instance we know
+ */
+void SAL_CALL Job::notifyClosing( const css::lang::EventObject& )
+{
+ die();
+ // Do nothing else here. Our internal resources was released ...
+}
+
+/**
+ @short shouldn't be called normally
+ @descr But it doesn't matter, who called it. We have to kill our internal
+ running processes hardly.
+
+ @param aEvent
+ describe the broadcaster
+*/
+void SAL_CALL Job::disposing( const css::lang::EventObject& aEvent )
+{
+ /* SAFE { */
+ {
+ SolarMutexGuard aWriteLock;
+
+ if (m_xDesktop.is() && aEvent.Source == m_xDesktop)
+ {
+ m_xDesktop.clear();
+ m_bListenOnDesktop = false;
+ }
+ else if (m_xFrame.is() && aEvent.Source == m_xFrame)
+ {
+ m_xFrame.clear();
+ m_bListenOnFrame = false;
+ }
+ else if (m_xModel.is() && aEvent.Source == m_xModel)
+ {
+ m_xModel.clear();
+ m_bListenOnModel = false;
+ }
+ }
+ /* } SAFE */
+
+ die();
+ // Do nothing else here. Our internal resources was released ...
+}
+
+} // namespace framework
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */