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| -rw-r--r-- | framework/source/jobs/jobdispatch.cxx | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/framework/source/jobs/jobdispatch.cxx b/framework/source/jobs/jobdispatch.cxx new file mode 100644 index 000000000..d1e227b9a --- /dev/null +++ b/framework/source/jobs/jobdispatch.cxx @@ -0,0 +1,496 @@ +/* -*- 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/configaccess.hxx> +#include <jobs/joburl.hxx> +#include <jobs/job.hxx> +#include <classes/converter.hxx> + +#include <com/sun/star/frame/DispatchResultEvent.hpp> +#include <com/sun/star/frame/DispatchResultState.hpp> +#include <com/sun/star/frame/ModuleManager.hpp> +#include <com/sun/star/frame/XNotifyingDispatch.hpp> +#include <com/sun/star/frame/XDispatch.hpp> +#include <com/sun/star/frame/XStatusListener.hpp> +#include <com/sun/star/frame/XDispatchResultListener.hpp> +#include <com/sun/star/frame/XDispatchProvider.hpp> +#include <com/sun/star/lang/XInitialization.hpp> +#include <com/sun/star/lang/XServiceInfo.hpp> + +#include <cppuhelper/supportsservice.hxx> +#include <cppuhelper/implbase.hxx> +#include <rtl/ref.hxx> +#include <utility> +#include <vcl/svapp.hxx> + +using namespace framework; + +namespace { + +/** + @short implements a dispatch object for jobs + @descr Such dispatch object will be used by the generic dispatch mechanism if + a URL "vnd.sun.star.job:alias=<name>" occurs. + Then an instance of this class will be created and used. + This new instance will be called within his method + dispatch() or dispatchWithNotification() for executing the + real job. We do it, control the life cycle of this internal + wrapped job and inform any interested listener if it finish. + */ +class JobDispatch : public ::cppu::WeakImplHelper< + css::lang::XServiceInfo + , css::lang::XInitialization + , css::frame::XDispatchProvider + , css::frame::XNotifyingDispatch > // => XDispatch +{ +private: + + /** reference to the uno service manager */ + css::uno::Reference< css::uno::XComponentContext > m_xContext; + + /** reference to the frame, inside which this dispatch is used */ + css::uno::Reference< css::frame::XFrame > m_xFrame; + + /** name of module (writer, impress etc.) the frame is for */ + OUString m_sModuleIdentifier; + +// native interface methods + +public: + + explicit JobDispatch(css::uno::Reference< css::uno::XComponentContext > xContext); + virtual ~JobDispatch() override; + + void impl_dispatchEvent ( const OUString& sEvent , + const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ); + void impl_dispatchService( const OUString& sService , + const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ); + void impl_dispatchAlias ( const OUString& sAlias , + const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ); + +public: + virtual OUString SAL_CALL getImplementationName() override + { + return "com.sun.star.comp.framework.jobs.JobDispatch"; + } + + virtual sal_Bool SAL_CALL supportsService(OUString const & ServiceName) override + { + return cppu::supportsService(this, ServiceName); + } + + virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override + { + return {"com.sun.star.frame.ProtocolHandler"}; + } + + // Xinitialization + virtual void SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& lArguments ) override; + + // XDispatchProvider + virtual css::uno::Reference< css::frame::XDispatch > SAL_CALL queryDispatch ( const css::util::URL& aURL , + const OUString& sTargetFrameName , + sal_Int32 nSearchFlags ) override; + virtual css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > SAL_CALL queryDispatches( const css::uno::Sequence< css::frame::DispatchDescriptor >& lDescriptor ) override; + + // XNotifyingDispatch + virtual void SAL_CALL dispatchWithNotification( const css::util::URL& aURL , + const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ) override; + + // XDispatch + virtual void SAL_CALL dispatch ( const css::util::URL& aURL , + const css::uno::Sequence< css::beans::PropertyValue >& lArgs ) override; + virtual void SAL_CALL addStatusListener ( const css::uno::Reference< css::frame::XStatusListener >& xListener , + const css::util::URL& aURL ) override; + virtual void SAL_CALL removeStatusListener( const css::uno::Reference< css::frame::XStatusListener >& xListener , + const css::util::URL& aURL ) override; +}; + +/** + @short standard ctor + @descr It initialize this new instance. + + @param xContext + reference to the uno service manager +*/ +JobDispatch::JobDispatch( /*IN*/ css::uno::Reference< css::uno::XComponentContext > xContext ) + : m_xContext (std::move(xContext )) +{ +} + +/** + @short let this instance die + @descr We have to release all used resources and free used memory. +*/ +JobDispatch::~JobDispatch() +{ + // release all used resources + m_xContext.clear(); + m_xFrame.clear(); +} + +/** + @short implementation of XInitialization + @descr A protocol handler can provide this functionality, if it wish to get additional information + about the context it runs. In this case the frame reference would be given by the outside code. + + @param lArguments + the list of initialization arguments + First parameter should be the frame reference we need. +*/ +void SAL_CALL JobDispatch::initialize( const css::uno::Sequence< css::uno::Any >& lArguments ) +{ + SolarMutexGuard g; + + for (int a=0; a<lArguments.getLength(); ++a) + { + if (a==0) + { + lArguments[a] >>= m_xFrame; + + css::uno::Reference< css::frame::XModuleManager2 > xModuleManager = + css::frame::ModuleManager::create(m_xContext); + try + { + m_sModuleIdentifier = xModuleManager->identify( m_xFrame ); + } + catch( const css::uno::Exception& ) + {} + } + } +} + +/** + @short implementation of XDispatchProvider::queryDispatches() + @descr Every protocol handler will be asked for his agreement, if a URL was queried + for which this handler is registered. It's the chance for this handler to validate + the given URL and return a dispatch object (may be itself) or not. + + @param aURL + the queried URL, which should be checked + + @param sTargetFrameName + describes the target frame, in which context this handler will be used + Is mostly set to "", "_self", "_blank", "_default" or a non special one + using SELF/CREATE as search flags. + + @param nSearchFlags + Can be SELF or CREATE only and are set only if sTargetFrameName isn't a special target +*/ +css::uno::Reference< css::frame::XDispatch > SAL_CALL JobDispatch::queryDispatch( /*IN*/ const css::util::URL& aURL , + /*IN*/ const OUString& /*sTargetFrameName*/ , + /*IN*/ sal_Int32 /*nSearchFlags*/ ) +{ + css::uno::Reference< css::frame::XDispatch > xDispatch; + + JobURL aAnalyzedURL(aURL.Complete); + if (aAnalyzedURL.isValid()) + xDispatch = this; + + return xDispatch; +} + +/** + @short implementation of XDispatchProvider::queryDispatches() + @descr It's an optimized access for remote, so you can ask for + multiple dispatch objects at the same time. + + @param lDescriptor + a list of queryDispatch() parameter + + @return A list of corresponding dispatch objects. + NULL references are not skipped. Every result + match to one given descriptor item. +*/ +css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > SAL_CALL JobDispatch::queryDispatches( const css::uno::Sequence< css::frame::DispatchDescriptor >& lDescriptor ) +{ + // don't pack resulting list! + sal_Int32 nCount = lDescriptor.getLength(); + css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > lDispatches(nCount); + auto lDispatchesRange = asNonConstRange(lDispatches); + for (sal_Int32 i=0; i<nCount; ++i) + lDispatchesRange[i] = queryDispatch( lDescriptor[i].FeatureURL , + lDescriptor[i].FrameName , + lDescriptor[i].SearchFlags ); + return lDispatches; +} + +/** + @short implementation of XNotifyingDispatch::dispatchWithNotification() + @descr It creates the job service implementation and call execute on it. + Further it starts the life time control of it. (important for async job) + For synchronous job we react for the returned result directly ... for asynchronous + ones we do it later inside our callback method. But we use the same impl method + doing that to share the code. (see impl_finishJob()) + + If a job is already running, (it can only occur for asynchronous jobs) + don't start the same job a second time. Queue in the given dispatch parameter + and return immediately. If the current running job call us back, we will start this + new dispatch request. + If no job is running - queue the parameter too! But then start the new job immediately. + We have to queue it every time - because it hold us alive by ref count! + + @param aURL + describe the job(s), which should be started + + @param lArgs + optional arguments for this request + + @param xListener + an interested listener for possible results of this operation +*/ +void SAL_CALL JobDispatch::dispatchWithNotification( /*IN*/ const css::util::URL& aURL , + /*IN*/ const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + /*IN*/ const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ) +{ + JobURL aAnalyzedURL(aURL.Complete); + if (aAnalyzedURL.isValid()) + { + OUString sRequest; + if (aAnalyzedURL.getEvent(sRequest)) + impl_dispatchEvent(sRequest, lArgs, xListener); + else + if (aAnalyzedURL.getService(sRequest)) + impl_dispatchService(sRequest, lArgs, xListener); + else + if (aAnalyzedURL.getAlias(sRequest)) + impl_dispatchAlias(sRequest, lArgs, xListener); + } +} + +/** + @short dispatch an event + @descr We search all registered jobs for this event and execute it. + After doing so, we inform the given listener about the results. + (There will be one notify for every executed job!) + + @param sEvent + the event, for which jobs can be registered + + @param lArgs + optional arguments for this request + Currently not used! + + @param xListener + an interested listener for possible results of this operation +*/ +void JobDispatch::impl_dispatchEvent( /*IN*/ const OUString& sEvent , + /*IN*/ const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + /*IN*/ const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ) +{ + // get list of all enabled jobs + // The called static helper methods read it from the configuration and + // filter disabled jobs using it's time stamp values. + /* SAFE { */ + SolarMutexResettableGuard aReadLock; + std::vector< OUString > lJobs = JobData::getEnabledJobsForEvent(m_xContext, sEvent); + aReadLock.clear(); + /* } SAFE */ + + css::uno::Reference< css::frame::XDispatchResultListener > xThis( static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY ); + + // no jobs... no execution + // But a may given listener will know something... + // I think this operation was finished successfully. + // It's not really an error, if no registered jobs could be located. + // Step over all found jobs and execute it + int nExecutedJobs=0; + for (const OUString & lJob : lJobs) + { + /* SAFE { */ + aReadLock.reset(); + + JobData aCfg(m_xContext); + aCfg.setEvent(sEvent, lJob); + aCfg.setEnvironment(JobData::E_DISPATCH); + const bool bIsEnabled=aCfg.hasCorrectContext(m_sModuleIdentifier); + + rtl::Reference<Job> pJob = new Job(m_xContext, m_xFrame); + pJob->setJobData(aCfg); + + aReadLock.clear(); + /* } SAFE */ + + if (!bIsEnabled) + continue; + + // Special mode for listener. + // We don't notify it directly here. We delegate that + // to the job implementation. But we must set ourself there too. + // Because this job must fake the source address of the event. + // Otherwise the listener may ignore it. + if (xListener.is()) + pJob->setDispatchResultFake(xListener, xThis); + pJob->execute(Converter::convert_seqPropVal2seqNamedVal(lArgs)); + ++nExecutedJobs; + } + + if (nExecutedJobs<1 && xListener.is()) + { + css::frame::DispatchResultEvent aEvent; + aEvent.Source = xThis; + aEvent.State = css::frame::DispatchResultState::SUCCESS; + xListener->dispatchFinished(aEvent); + } +} + +/** + @short dispatch a service + @descr We use the given name only to create and if possible to initialize + it as a uno service. It can be useful for creating (caching?) + of e.g. one instance services. + + @param sService + the uno implementation or service name of the job, which should be instantiated + + @param lArgs + optional arguments for this request + Currently not used! + + @param xListener + an interested listener for possible results of this operation +*/ +void JobDispatch::impl_dispatchService( /*IN*/ const OUString& sService , + /*IN*/ const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + /*IN*/ const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ) +{ + /* SAFE { */ + SolarMutexClearableGuard aReadLock; + + JobData aCfg(m_xContext); + aCfg.setService(sService); + aCfg.setEnvironment(JobData::E_DISPATCH); + + /*Attention! + Jobs implements interfaces and dies by ref count! + And freeing of such uno object is done by uno itself. + So we have to use dynamic memory everytimes. + */ + rtl::Reference<Job> pJob = new Job(m_xContext, m_xFrame); + pJob->setJobData(aCfg); + + aReadLock.clear(); + /* } SAFE */ + + css::uno::Reference< css::frame::XDispatchResultListener > xThis( static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY ); + + // Special mode for listener. + // We don't notify it directly here. We delegate that + // to the job implementation. But we must set ourself there too. + // Because this job must fake the source address of the event. + // Otherwise the listener may ignore it. + if (xListener.is()) + pJob->setDispatchResultFake(xListener, xThis); + pJob->execute(Converter::convert_seqPropVal2seqNamedVal(lArgs)); +} + +/** + @short dispatch an alias + @descr We use this alias to locate a job inside the configuration + and execute it. Further we inform the given listener about the results. + + @param sAlias + the alias name of the configured job + + @param lArgs + optional arguments for this request + Currently not used! + + @param xListener + an interested listener for possible results of this operation +*/ +void JobDispatch::impl_dispatchAlias( /*IN*/ const OUString& sAlias , + /*IN*/ const css::uno::Sequence< css::beans::PropertyValue >& lArgs , + /*IN*/ const css::uno::Reference< css::frame::XDispatchResultListener >& xListener ) +{ + /* SAFE { */ + SolarMutexClearableGuard aReadLock; + + JobData aCfg(m_xContext); + aCfg.setAlias(sAlias); + aCfg.setEnvironment(JobData::E_DISPATCH); + + rtl::Reference<Job> pJob = new Job(m_xContext, m_xFrame); + pJob->setJobData(aCfg); + + aReadLock.clear(); + /* } SAFE */ + + css::uno::Reference< css::frame::XDispatchResultListener > xThis( static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY ); + + // Special mode for listener. + // We don't notify it directly here. We delegate that + // to the job implementation. But we must set ourself there too. + // Because this job must fake the source address of the event. + // Otherwise the listener may ignore it. + if (xListener.is()) + pJob->setDispatchResultFake(xListener, xThis); + pJob->execute(Converter::convert_seqPropVal2seqNamedVal(lArgs)); +} + +/** + @short implementation of XDispatch::dispatch() + @descr Because the methods dispatch() and dispatchWithNotification() are different in her parameters + only, we can forward this request to dispatchWithNotification() by using an empty listener! + + @param aURL + describe the job(s), which should be started + + @param lArgs + optional arguments for this request + + @see dispatchWithNotification() +*/ +void SAL_CALL JobDispatch::dispatch( /*IN*/ const css::util::URL& aURL , + /*IN*/ const css::uno::Sequence< css::beans::PropertyValue >& lArgs ) +{ + dispatchWithNotification(aURL, lArgs, css::uno::Reference< css::frame::XDispatchResultListener >()); +} + +/** + @short not supported +*/ +void SAL_CALL JobDispatch::addStatusListener( /*IN*/ const css::uno::Reference< css::frame::XStatusListener >&, + /*IN*/ const css::util::URL& ) +{ +} + +/** + @short not supported +*/ +void SAL_CALL JobDispatch::removeStatusListener( /*IN*/ const css::uno::Reference< css::frame::XStatusListener >&, + /*IN*/ const css::util::URL& ) +{ +} + +} + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * +com_sun_star_comp_framework_jobs_JobDispatch_get_implementation( + css::uno::XComponentContext *context, + css::uno::Sequence<css::uno::Any> const &) +{ + return cppu::acquire(new JobDispatch(context)); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |