c68c744b68
so that subclasses can drop the lock while calling listeners Change-Id: I6105438110af08f10b0ed50057b28172c3442b95 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127434 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
111 lines
4.0 KiB
C++
111 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <sal/config.h>
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#include <comphelper/comphelperdllapi.h>
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#include <comphelper/interfacecontainer4.hxx>
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#include <cppuhelper/weak.hxx>
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#include <cppuhelper/queryinterface.hxx>
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#include <com/sun/star/lang/XComponent.hpp>
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#include <com/sun/star/lang/XTypeProvider.hpp>
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#include <mutex>
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namespace comphelper
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{
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/**
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Serves two purposes
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(1) extracts code that doesn't need to be templated
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(2) helps to handle the custom where we have conflicting interfaces
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e.g. multiple UNO interfaces that extend css::lang::XComponent
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*/
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class COMPHELPER_DLLPUBLIC WeakComponentImplHelperBase : public cppu::OWeakObject,
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public css::lang::XComponent
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{
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public:
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WeakComponentImplHelperBase();
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virtual ~WeakComponentImplHelperBase() override;
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// css::lang::XComponent
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virtual void SAL_CALL dispose() override;
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virtual void SAL_CALL
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addEventListener(css::uno::Reference<css::lang::XEventListener> const& rxListener) override;
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virtual void SAL_CALL
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removeEventListener(css::uno::Reference<css::lang::XEventListener> const& rxListener) override;
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/**
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Called by dispose for subclasses to do dispose() work.
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The mutex is held when called, and subclasses can unlock() the guard if necessary.
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*/
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virtual void disposing(std::unique_lock<std::mutex>&);
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protected:
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comphelper::OInterfaceContainerHelper4<css::lang::XEventListener> maEventListeners;
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mutable std::mutex m_aMutex;
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bool m_bDisposed = false;
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};
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template <typename... Ifc>
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class SAL_DLLPUBLIC_TEMPLATE WeakComponentImplHelper : public WeakComponentImplHelperBase,
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public css::lang::XTypeProvider,
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public Ifc...
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{
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public:
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virtual void SAL_CALL acquire() noexcept final override { OWeakObject::acquire(); }
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virtual void SAL_CALL release() noexcept final override { OWeakObject::release(); }
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// css::lang::XComponent
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virtual void SAL_CALL dispose() noexcept final override
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{
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WeakComponentImplHelperBase::dispose();
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}
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virtual void SAL_CALL addEventListener(
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css::uno::Reference<css::lang::XEventListener> const& rxListener) final override
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{
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WeakComponentImplHelperBase::addEventListener(rxListener);
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}
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virtual void SAL_CALL removeEventListener(
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css::uno::Reference<css::lang::XEventListener> const& rxListener) final override
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{
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WeakComponentImplHelperBase::removeEventListener(rxListener);
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}
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virtual css::uno::Any SAL_CALL queryInterface(css::uno::Type const& rType) override
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{
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css::uno::Any aReturn = ::cppu::queryInterface(
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rType, static_cast<css::uno::XWeak*>(this),
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static_cast<css::lang::XComponent*>(static_cast<WeakComponentImplHelperBase*>(this)),
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static_cast<css::lang::XTypeProvider*>(this), static_cast<Ifc*>(this)...);
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if (aReturn.hasValue())
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return aReturn;
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return OWeakObject::queryInterface(rType);
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}
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// css::lang::XTypeProvider
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virtual css::uno::Sequence<css::uno::Type> SAL_CALL getTypes() override
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{
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static const css::uno::Sequence<css::uno::Type> aTypeList{
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cppu::UnoType<css::uno::XWeak>::get(), cppu::UnoType<css::lang::XComponent>::get(),
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cppu::UnoType<css::lang::XTypeProvider>::get(), cppu::UnoType<Ifc>::get()...
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};
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return aTypeList;
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}
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virtual css::uno::Sequence<sal_Int8> SAL_CALL getImplementationId() override
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{
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return css::uno::Sequence<sal_Int8>();
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}
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};
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} // namespace comphelper
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/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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