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Diffstat (limited to 'ucbhelper/source/client/interceptedinteraction.cxx')
| -rw-r--r-- | ucbhelper/source/client/interceptedinteraction.cxx | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/ucbhelper/source/client/interceptedinteraction.cxx b/ucbhelper/source/client/interceptedinteraction.cxx new file mode 100644 index 000000000..682732958 --- /dev/null +++ b/ucbhelper/source/client/interceptedinteraction.cxx @@ -0,0 +1,138 @@ +/* -*- 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 <ucbhelper/interceptedinteraction.hxx> + +#include <osl/diagnose.h> + +namespace ucbhelper{ + +InterceptedInteraction::InterceptedInteraction() +{ +} + +void InterceptedInteraction::setInterceptedHandler(const css::uno::Reference< css::task::XInteractionHandler >& xInterceptedHandler) +{ + m_xInterceptedHandler = xInterceptedHandler; +} + +void InterceptedInteraction::setInterceptions(const ::std::vector< InterceptedRequest >& lInterceptions) +{ + m_lInterceptions = lInterceptions; +} + +InterceptedInteraction::EInterceptionState InterceptedInteraction::intercepted( + const InterceptedRequest&, + const css::uno::Reference< css::task::XInteractionRequest >&) +{ + // default behaviour! see impl_interceptRequest() for further information ... + return E_NOT_INTERCEPTED; +} + +css::uno::Reference< css::task::XInteractionContinuation > InterceptedInteraction::extractContinuation(const css::uno::Sequence< css::uno::Reference< css::task::XInteractionContinuation > >& lContinuations, + const css::uno::Type& aType ) +{ + const css::uno::Reference< css::task::XInteractionContinuation >* pContinuations = std::find_if(lContinuations.begin(), lContinuations.end(), + [&aType](const css::uno::Reference< css::task::XInteractionContinuation >& rContinuation) { + css::uno::Reference< css::uno::XInterface > xCheck(rContinuation, css::uno::UNO_QUERY); + return xCheck->queryInterface(aType).hasValue(); + }); + if (pContinuations != lContinuations.end()) + return *pContinuations; + + return css::uno::Reference< css::task::XInteractionContinuation >(); +} + +void SAL_CALL InterceptedInteraction::handle(const css::uno::Reference< css::task::XInteractionRequest >& xRequest) +{ + impl_handleDefault(xRequest); +} + +void InterceptedInteraction::impl_handleDefault(const css::uno::Reference< css::task::XInteractionRequest >& xRequest) +{ + EInterceptionState eState = impl_interceptRequest(xRequest); + + switch(eState) + { + case E_NOT_INTERCEPTED: + { + // Non of the intercepted requests match to the given one. + // => forward request to the internal wrapped handler - if there is one. + if (m_xInterceptedHandler.is()) + m_xInterceptedHandler->handle(xRequest); + } + break; + + case E_NO_CONTINUATION_FOUND: + { + // Runtime error! The defined continuation could not be located + // inside the set of available continuations of the incoming request. + // What's wrong - the interception list or the request? + OSL_FAIL("InterceptedInteraction::handle()\nCould intercept this interaction request - but can't locate the right continuation!"); + } + break; + + case E_INTERCEPTED: + break; + } +} + +InterceptedInteraction::EInterceptionState InterceptedInteraction::impl_interceptRequest(const css::uno::Reference< css::task::XInteractionRequest >& xRequest) +{ + css::uno::Any aRequest = xRequest->getRequest(); + const css::uno::Type& aRequestType = aRequest.getValueType(); + css::uno::Sequence< css::uno::Reference< css::task::XInteractionContinuation > > lContinuations = xRequest->getContinuations(); + + // check against the list of static requests + auto pIt = std::find_if(m_lInterceptions.begin(), m_lInterceptions.end(), + [&aRequestType](const InterceptedRequest& rInterception) { + // check the request + // don't change intercepted and request type here -> it will check the wrong direction! + return rInterception.Request.getValueType().isAssignableFrom(aRequestType); + }); + + if (pIt != m_lInterceptions.end()) // intercepted ... + { + const InterceptedRequest& rInterception = *pIt; + + // Call they might existing derived class, so they can handle that by its own. + // If it's not interested on that (maybe it's not overwritten and the default implementation + // returns E_NOT_INTERCEPTED as default) -> search required continuation + EInterceptionState eState = intercepted(rInterception, xRequest); + if (eState != E_NOT_INTERCEPTED) + return eState; + + css::uno::Reference< css::task::XInteractionContinuation > xContinuation = InterceptedInteraction::extractContinuation(lContinuations, rInterception.Continuation); + if (xContinuation.is()) + { + xContinuation->select(); + return E_INTERCEPTED; + } + + // Can be reached only, if the request does not support the given continuation! + // => RuntimeError!? + return E_NO_CONTINUATION_FOUND; + } + + return E_NOT_INTERCEPTED; +} + +} // namespace ucbhelper + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |