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Diffstat (limited to 'sc/source/ui/unoobj/listenercalls.cxx')
-rw-r--r-- | sc/source/ui/unoobj/listenercalls.cxx | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/sc/source/ui/unoobj/listenercalls.cxx b/sc/source/ui/unoobj/listenercalls.cxx new file mode 100644 index 000000000..7ff7c7df0 --- /dev/null +++ b/sc/source/ui/unoobj/listenercalls.cxx @@ -0,0 +1,69 @@ +/* -*- 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 <com/sun/star/util/XModifyListener.hpp> +#include <osl/diagnose.h> + +#include <listenercalls.hxx> + +using namespace com::sun::star; + +ScUnoListenerCalls::ScUnoListenerCalls() {} + +ScUnoListenerCalls::~ScUnoListenerCalls() +{ + OSL_ENSURE(aEntries.empty(), "unhandled listener calls remaining"); +} + +void ScUnoListenerCalls::Add(const uno::Reference<util::XModifyListener>& rListener, + const lang::EventObject& rEvent) +{ + if (rListener.is()) + aEntries.emplace_back(rListener, rEvent); +} + +void ScUnoListenerCalls::ExecuteAndClear() +{ + // Execute all stored calls and remove them from the list. + // During each modified() call, Add may be called again. + // These new calls are executed here, too. + + std::list<ScUnoListenerEntry>::iterator aItr(aEntries.begin()); + while (aItr != aEntries.end()) + { + ScUnoListenerEntry aEntry = *aItr; + try + { + aEntry.xListener->modified(aEntry.aEvent); + } + catch (const uno::RuntimeException&) + { + // the listener is an external object and may throw a RuntimeException + // for reasons we don't know + } + + // New calls that are added during the modified() call are appended to the end + // of aEntries, so the loop will catch them, too (as long as erase happens + // after modified). + + aItr = aEntries.erase(aItr); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |