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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 <framework/dispatchhelper.hxx>
+
+#include <com/sun/star/frame/XNotifyingDispatch.hpp>
+#include <com/sun/star/util/URLTransformer.hpp>
+#include <com/sun/star/util/XURLTransformer.hpp>
+
+#include <comphelper/profilezone.hxx>
+#include <unotools/mediadescriptor.hxx>
+#include <utility>
+#include <vcl/threadex.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+namespace framework
+{
+// XInterface, XTypeProvider, XServiceInfo
+
+OUString SAL_CALL DispatchHelper::getImplementationName()
+{
+ return "com.sun.star.comp.framework.services.DispatchHelper";
+}
+
+sal_Bool SAL_CALL DispatchHelper::supportsService(const OUString& sServiceName)
+{
+ return cppu::supportsService(this, sServiceName);
+}
+
+css::uno::Sequence<OUString> SAL_CALL DispatchHelper::getSupportedServiceNames()
+{
+ return { "com.sun.star.frame.DispatchHelper" };
+}
+
+/** ctor.
+
+ @param xSMGR the global uno service manager, which can be used to create own needed services.
+*/
+DispatchHelper::DispatchHelper(css::uno::Reference<css::uno::XComponentContext> xContext)
+ : m_xContext(std::move(xContext))
+ , m_aBlockFlag(false)
+{
+}
+
+/** dtor.
+*/
+DispatchHelper::~DispatchHelper() {}
+
+/** capsulate all steps of a dispatch request and provide so an easy way for dispatches.
+
+ @param xDispatchProvider
+ identifies the object, which provides may be valid dispatch objects for this execute.
+
+ @param sURL
+ describes the requested feature.
+
+ @param sTargetFrameName
+ points to the frame, which must be used (or may be created) for this dispatch.
+
+ @param nSearchFlags
+ in case the <var>sTargetFrameName</var> isn't unique, these flags regulate further searches.
+
+ @param lArguments
+ optional arguments for this request.
+
+ @return An Any which capsulate a possible result of the internal wrapped dispatch.
+ */
+css::uno::Any SAL_CALL DispatchHelper::executeDispatch(
+ const css::uno::Reference<css::frame::XDispatchProvider>& xDispatchProvider,
+ const OUString& sURL, const OUString& sTargetFrameName, sal_Int32 nSearchFlags,
+ const css::uno::Sequence<css::beans::PropertyValue>& lArguments)
+{
+ // check for valid parameters
+ if ((!xDispatchProvider.is()) || (!m_xContext.is()) || (sURL.isEmpty()))
+ {
+ return css::uno::Any();
+ }
+
+ // parse given URL
+ css::uno::Reference<css::util::XURLTransformer> xParser;
+ /* SAFE { */
+ {
+ std::scoped_lock aReadLock(m_mutex);
+ xParser = css::util::URLTransformer::create(m_xContext);
+ }
+ /* } SAFE */
+
+ css::util::URL aURL;
+ aURL.Complete = sURL;
+ xParser->parseStrict(aURL);
+
+ // search dispatcher
+ css::uno::Reference<css::frame::XDispatch> xDispatch
+ = xDispatchProvider->queryDispatch(aURL, sTargetFrameName, nSearchFlags);
+
+ utl::MediaDescriptor aDescriptor(lArguments);
+ bool bOnMainThread = aDescriptor.getUnpackedValueOrDefault("OnMainThread", false);
+
+ if (bOnMainThread)
+ return vcl::solarthread::syncExecute([this, &xDispatch, &aURL, &lArguments]() {
+ return executeDispatch(xDispatch, aURL, true, lArguments);
+ });
+ else
+ return executeDispatch(xDispatch, aURL, true, lArguments);
+}
+
+const css::uno::Any&
+DispatchHelper::executeDispatch(const css::uno::Reference<css::frame::XDispatch>& xDispatch,
+ const css::util::URL& aURL, bool SyncronFlag,
+ const css::uno::Sequence<css::beans::PropertyValue>& lArguments)
+{
+ comphelper::ProfileZone aZone("executeDispatch");
+ css::uno::Reference<css::uno::XInterface> xTHIS(static_cast<::cppu::OWeakObject*>(this),
+ css::uno::UNO_QUERY);
+ m_aResult.clear();
+
+ // check for valid parameters
+ if (xDispatch.is())
+ {
+ css::uno::Reference<css::frame::XNotifyingDispatch> xNotifyDispatch(xDispatch,
+ css::uno::UNO_QUERY);
+
+ // make sure that synchronous execution is used (if possible)
+ css::uno::Sequence<css::beans::PropertyValue> aArguments(lArguments);
+ sal_Int32 nLength = lArguments.getLength();
+ aArguments.realloc(nLength + 1);
+ auto pArguments = aArguments.getArray();
+ pArguments[nLength].Name = "SynchronMode";
+ pArguments[nLength].Value <<= SyncronFlag;
+
+ if (xNotifyDispatch.is())
+ {
+ // dispatch it with guaranteed notification
+ // Here we can hope for a result ... instead of the normal dispatch.
+ css::uno::Reference<css::frame::XDispatchResultListener> xListener(xTHIS,
+ css::uno::UNO_QUERY);
+ /* SAFE { */
+ {
+ std::scoped_lock aWriteLock(m_mutex);
+ m_xBroadcaster = xNotifyDispatch;
+ m_aBlockFlag = false;
+ }
+ /* } SAFE */
+
+ // dispatch it and wait for a notification
+ // TODO/MBA: waiting in main thread?!
+ xNotifyDispatch->dispatchWithNotification(aURL, aArguments, xListener);
+
+ std::unique_lock aWriteLock(m_mutex);
+ m_aBlock.wait(aWriteLock, [this] { return m_aBlockFlag; }); // wait for result
+ }
+ else
+ {
+ // dispatch it without any chance to get a result
+ xDispatch->dispatch(aURL, aArguments);
+ }
+ }
+
+ return m_aResult;
+}
+
+/** callback for started dispatch with guaranteed notifications.
+
+ We must save the result, so the method executeDispatch() can return it.
+ Further we must release the broadcaster (otherwise it can't die)
+ and unblock the waiting executeDispatch() request.
+
+ @param aResult
+ describes the result of the dispatch operation
+ */
+void SAL_CALL DispatchHelper::dispatchFinished(const css::frame::DispatchResultEvent& aResult)
+{
+ std::scoped_lock g(m_mutex);
+ m_aResult <<= aResult;
+ m_aBlockFlag = true;
+ m_aBlock.notify_one();
+ m_xBroadcaster.clear();
+}
+
+/** we have to release our broadcaster reference.
+
+ @param aEvent
+ describe the source of this event and MUST be our save broadcaster!
+ */
+void SAL_CALL DispatchHelper::disposing(const css::lang::EventObject&)
+{
+ std::scoped_lock g(m_mutex);
+ m_aResult.clear();
+ m_aBlockFlag = true;
+ m_aBlock.notify_one();
+ m_xBroadcaster.clear();
+}
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+framework_DispatchHelper_get_implementation(css::uno::XComponentContext* context,
+ css::uno::Sequence<css::uno::Any> const&)
+{
+ return cppu::acquire(new framework::DispatchHelper(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */