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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 <dispatch/interceptionhelper.hxx>
+
+#include <com/sun/star/frame/XInterceptorInfo.hpp>
+#include <osl/diagnose.h>
+#include <vcl/svapp.hxx>
+
+namespace framework{
+
+InterceptionHelper::InterceptionHelper(const css::uno::Reference< css::frame::XFrame >& xOwner,
+ const css::uno::Reference< css::frame::XDispatchProvider >& xSlave)
+ : m_xOwnerWeak (xOwner )
+ , m_xSlave (xSlave )
+{
+}
+
+InterceptionHelper::~InterceptionHelper()
+{
+}
+
+css::uno::Reference< css::frame::XDispatch > SAL_CALL InterceptionHelper::queryDispatch(const css::util::URL& aURL ,
+ const OUString& sTargetFrameName,
+ sal_Int32 nSearchFlags )
+{
+ css::uno::Reference<css::frame::XDispatchProvider> xInterceptor;
+ // SAFE {
+ {
+ SolarMutexGuard aReadLock;
+
+ // a) first search an interceptor, which match to this URL by its URL pattern registration
+ // Note: if it return NULL - it does not mean an empty interceptor list automatically!
+ InterceptorList::const_iterator pIt = m_lInterceptionRegs.findByPattern(aURL.Complete);
+ if (pIt != m_lInterceptionRegs.end())
+ xInterceptor = pIt->xInterceptor;
+
+ // b) No match by registration - but a valid interceptor list.
+ // Find first interceptor w/o pattern, so we need to query it
+ if (!xInterceptor.is())
+ {
+ for (auto const& lInterceptionReg : m_lInterceptionRegs)
+ {
+ if (!lInterceptionReg.lURLPattern.hasElements())
+ {
+ // no pattern -> need to ask this guy!
+ xInterceptor = lInterceptionReg.xInterceptor;
+ break;
+ }
+ }
+ // if we didn't find any non-pattern interceptor, there's no-one
+ // registered for this command url (we already searched for matching
+ // patterns above)
+ }
+ // c) No registered interceptor => use our direct slave.
+ // This helper exist by design and must be valid everytimes ...
+ // But to be more feature proof - we should check that .-)
+ if (!xInterceptor.is() && m_xSlave.is())
+ xInterceptor = m_xSlave;
+ }
+ // } SAFE
+
+ css::uno::Reference< css::frame::XDispatch > xReturn;
+ if (xInterceptor.is())
+ xReturn = xInterceptor->queryDispatch(aURL, sTargetFrameName, nSearchFlags);
+ return xReturn;
+}
+
+css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > SAL_CALL InterceptionHelper::queryDispatches( const css::uno::Sequence< css::frame::DispatchDescriptor >& lDescriptor )
+{
+ sal_Int32 c = lDescriptor.getLength();
+ css::uno::Sequence< css::uno::Reference< css::frame::XDispatch > > lDispatches (c);
+ css::uno::Reference< css::frame::XDispatch >* pDispatches = lDispatches.getArray();
+ const css::frame::DispatchDescriptor* pDescriptor = lDescriptor.getConstArray();
+
+ for (sal_Int32 i=0; i<c; ++i)
+ pDispatches[i] = queryDispatch(pDescriptor[i].FeatureURL, pDescriptor[i].FrameName, pDescriptor[i].SearchFlags);
+
+ return lDispatches;
+}
+
+void SAL_CALL InterceptionHelper::registerDispatchProviderInterceptor(const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor)
+{
+ // reject incorrect calls of this interface method
+ css::uno::Reference< css::frame::XDispatchProvider > xThis(static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ if (!xInterceptor.is())
+ throw css::uno::RuntimeException("NULL references not allowed as in parameter", xThis);
+
+ // Fill a new info structure for new interceptor.
+ // Save his reference and try to get an additional URL/pattern list from him.
+ // If no list exist register these interceptor for all dispatch events with "*"!
+ InterceptorInfo aInfo;
+
+ aInfo.xInterceptor = xInterceptor;
+ css::uno::Reference< css::frame::XInterceptorInfo > xInfo(xInterceptor, css::uno::UNO_QUERY);
+ if (xInfo.is())
+ aInfo.lURLPattern = xInfo->getInterceptedURLs();
+ else
+ {
+ aInfo.lURLPattern.realloc(1);
+ aInfo.lURLPattern[0] = "*";
+ }
+
+ // SAFE {
+ SolarMutexClearableGuard aWriteLock;
+
+ // a) no interceptor at all - set this instance as master for given interceptor
+ // and set our slave as its slave - and put this interceptor to the list.
+ // Its place there doesn't matter. Because this list is currently empty.
+ if (m_lInterceptionRegs.empty())
+ {
+ xInterceptor->setMasterDispatchProvider(xThis );
+ xInterceptor->setSlaveDispatchProvider (m_xSlave);
+ m_lInterceptionRegs.push_back(aInfo);
+ }
+
+ // b) OK - there is at least one interceptor already registered.
+ // It's slave and it's master must be valid references ...
+ // because we created it.
+
+ // insert it before any other existing interceptor - means at the beginning of our list.
+ else
+ {
+ css::uno::Reference< css::frame::XDispatchProvider > xSlaveD = m_lInterceptionRegs.begin()->xInterceptor;
+ css::uno::Reference< css::frame::XDispatchProviderInterceptor > xSlaveI (xSlaveD , css::uno::UNO_QUERY);
+
+ xInterceptor->setMasterDispatchProvider(xThis );
+ xInterceptor->setSlaveDispatchProvider (xSlaveD );
+ xSlaveI->setMasterDispatchProvider (aInfo.xInterceptor);
+
+ m_lInterceptionRegs.push_front(aInfo);
+ }
+
+ css::uno::Reference< css::frame::XFrame > xOwner(m_xOwnerWeak.get(), css::uno::UNO_QUERY);
+
+ aWriteLock.clear();
+ // } SAFE
+
+ // Don't forget to send a frame action event "context changed".
+ // Any cached dispatch objects must be validated now!
+ if (xOwner.is())
+ xOwner->contextChanged();
+}
+
+void SAL_CALL InterceptionHelper::releaseDispatchProviderInterceptor(const css::uno::Reference< css::frame::XDispatchProviderInterceptor >& xInterceptor)
+{
+ // reject wrong calling of this interface method
+ css::uno::Reference< css::frame::XDispatchProvider > xThis(static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY);
+ if (!xInterceptor.is())
+ throw css::uno::RuntimeException("NULL references not allowed as in parameter", xThis);
+
+ // SAFE {
+ SolarMutexClearableGuard aWriteLock;
+
+ // search this interceptor ...
+ // If it could be located inside cache -
+ // use its slave/master relations to update the interception list;
+ // set empty references for it as new master and slave;
+ // and release it from out cache.
+ InterceptorList::iterator pIt = m_lInterceptionRegs.findByReference(xInterceptor);
+ if (pIt != m_lInterceptionRegs.end())
+ {
+ css::uno::Reference< css::frame::XDispatchProvider > xSlaveD = xInterceptor->getSlaveDispatchProvider();
+ css::uno::Reference< css::frame::XDispatchProvider > xMasterD = xInterceptor->getMasterDispatchProvider();
+ css::uno::Reference< css::frame::XDispatchProviderInterceptor > xSlaveI (xSlaveD , css::uno::UNO_QUERY);
+ css::uno::Reference< css::frame::XDispatchProviderInterceptor > xMasterI (xMasterD , css::uno::UNO_QUERY);
+
+ if (xMasterI.is())
+ xMasterI->setSlaveDispatchProvider(xSlaveD);
+
+ if (xSlaveI.is())
+ xSlaveI->setMasterDispatchProvider(xMasterD);
+
+ xInterceptor->setSlaveDispatchProvider (css::uno::Reference< css::frame::XDispatchProvider >());
+ xInterceptor->setMasterDispatchProvider(css::uno::Reference< css::frame::XDispatchProvider >());
+
+ m_lInterceptionRegs.erase(pIt);
+ }
+
+ css::uno::Reference< css::frame::XFrame > xOwner(m_xOwnerWeak.get(), css::uno::UNO_QUERY);
+
+ aWriteLock.clear();
+ // } SAFE
+
+ // Don't forget to send a frame action event "context changed".
+ // Any cached dispatch objects must be validated now!
+ if (xOwner.is())
+ xOwner->contextChanged();
+}
+
+#define FORCE_DESTRUCTION_OF_INTERCEPTION_CHAIN
+void SAL_CALL InterceptionHelper::disposing(const css::lang::EventObject& aEvent)
+{
+ #ifdef FORCE_DESTRUCTION_OF_INTERCEPTION_CHAIN
+ // SAFE ->
+ SolarMutexResettableGuard aReadLock;
+
+ // check call... we accept such disposing calls only from our owner frame.
+ css::uno::Reference< css::frame::XFrame > xOwner(m_xOwnerWeak.get(), css::uno::UNO_QUERY);
+ if (aEvent.Source != xOwner)
+ return;
+
+ // Because every interceptor hold at least one reference to us ... and we destruct this list
+ // of interception objects ... we should hold ourself alive .-)
+ css::uno::Reference< css::frame::XDispatchProvider > xThis(static_cast< ::cppu::OWeakObject* >(this), css::uno::UNO_QUERY_THROW);
+
+ // We need a full copy of all currently registered interceptor objects.
+ // Otherwise we can't iterate over this vector without the risk, that our iterator will be invalid.
+ // Because this vetor will be influenced by every deregistered interceptor.
+ InterceptionHelper::InterceptorList aCopy = m_lInterceptionRegs;
+
+ aReadLock.clear();
+ // <- SAFE
+
+ for (auto & elem : aCopy)
+ {
+ if (elem.xInterceptor.is())
+ {
+ css::uno::Reference< css::frame::XDispatchProviderInterceptor > xInterceptor(elem.xInterceptor, css::uno::UNO_QUERY_THROW);
+ releaseDispatchProviderInterceptor(xInterceptor);
+ elem.xInterceptor.clear();
+ }
+ }
+
+ aCopy.clear();
+
+ #if OSL_DEBUG_LEVEL > 0
+ // SAFE ->
+ aReadLock.reset();
+ if (!m_lInterceptionRegs.empty() )
+ OSL_FAIL("There are some pending interceptor objects, which seems to be registered during (!) the destruction of a frame.");
+ aReadLock.clear();
+ // <- SAFE
+ #endif // ODL_DEBUG_LEVEL>0
+
+ #endif // FORCE_DESTRUCTION_OF_INTERCEPTION_CHAIN
+}
+
+} // namespace framework
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */