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Diffstat (limited to 'include/comphelper/propmultiplex2.hxx')
-rw-r--r-- | include/comphelper/propmultiplex2.hxx | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/include/comphelper/propmultiplex2.hxx b/include/comphelper/propmultiplex2.hxx new file mode 100644 index 0000000000..ff3a9abaf2 --- /dev/null +++ b/include/comphelper/propmultiplex2.hxx @@ -0,0 +1,111 @@ +/* -*- 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 . + */ +#pragma once + +#include <com/sun/star/beans/XPropertyChangeListener.hpp> +#include <cppuhelper/implbase.hxx> +#include <comphelper/comphelperdllapi.h> +#include <rtl/ref.hxx> +#include <mutex> +#include <vector> + +namespace com::sun::star::beans +{ +class XPropertySet; +} + +//= property helper classes + +namespace comphelper +{ +class OPropertyChangeMultiplexer2; + +//= OPropertyChangeListener + +/// simple listener adapter for property sets +class COMPHELPER_DLLPUBLIC OPropertyChangeListener2 +{ + friend class OPropertyChangeMultiplexer2; + + rtl::Reference<OPropertyChangeMultiplexer2> m_xAdapter; + +public: + virtual ~OPropertyChangeListener2(); + + /// @throws css::uno::RuntimeException + virtual void _propertyChanged(const css::beans::PropertyChangeEvent& _rEvent) = 0; + +protected: + /** If the derivee also owns the mutex which we know as reference, then call this within your + derivee's dtor. + */ + void disposeAdapter(std::unique_lock<std::mutex>& rGuard); + +private: + void setAdapter(std::unique_lock<std::mutex>& rGuard, OPropertyChangeMultiplexer2* _pAdapter); +}; + +//= OPropertyChangeMultiplexer2 +// A copy of OPropertyChangeMultiplexer except that it uses std::mutex instead osl::Mutex + +/// multiplexer for property changes +// workaround for incremental linking bugs in MSVC2019 +class SAL_DLLPUBLIC_TEMPLATE OPropertyChangeMultiplexer_Base2 + : public cppu::WeakImplHelper<css::beans::XPropertyChangeListener> +{ +}; +class COMPHELPER_DLLPUBLIC OPropertyChangeMultiplexer2 final + : public OPropertyChangeMultiplexer_Base2 +{ + friend class OPropertyChangeListener2; + std::mutex& m_rMutex; + std::vector<OUString> m_aProperties; + css::uno::Reference<css::beans::XPropertySet> m_xSet; + OPropertyChangeListener2* m_pListener; + sal_Int32 m_nLockCount; + bool m_bListening : 1; + + void onListenerDestruction(); + virtual ~OPropertyChangeMultiplexer2() override; + +public: + OPropertyChangeMultiplexer2(std::mutex& rMutex, std::unique_lock<std::mutex>& rGuard, + OPropertyChangeListener2* _pListener, + const css::uno::Reference<css::beans::XPropertySet>& _rxSet); + + // XEventListener + virtual void SAL_CALL disposing(const css::lang::EventObject& Source) override; + + // XPropertyChangeListener + virtual void SAL_CALL propertyChange(const css::beans::PropertyChangeEvent& evt) override; + + /// incremental lock + void lock(); + /// incremental unlock + void unlock(); + /// get the lock count + sal_Int32 locked() const { return m_nLockCount; } + + void addProperty(const OUString& aPropertyName); + void dispose(std::unique_lock<std::mutex>& rGuard); +}; + +} // namespace comphelper + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |