compbase.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
 * 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/.
 */
 
#pragma once
 
#include <sal/config.h>
 
#include <comphelper/comphelperdllapi.h>
#include <comphelper/interfacecontainer4.hxx>
#include <comphelper/unoimplbase.hxx>
#include <cppuhelper/weak.hxx>
#include <cppuhelper/queryinterface.hxx>
#include <cppuhelper/implbase.hxx>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/lang/XTypeProvider.hpp>
#include <mutex>
 
namespace comphelper
{
class COMPHELPER_DLLPUBLIC WeakComponentImplHelperBase : public virtual comphelper::UnoImplBase,
                                                         public cppu::OWeakObject,
                                                         public css::lang::XComponent
{
public:
    virtual ~WeakComponentImplHelperBase() override;
 
    // css::lang::XComponent
    virtual void SAL_CALL dispose() override;
    virtual void SAL_CALL
    addEventListener(css::uno::Reference<css::lang::XEventListener> const& rxListener) override;
    virtual void SAL_CALL
    removeEventListener(css::uno::Reference<css::lang::XEventListener> const& rxListener) override;
 
    virtual css::uno::Any SAL_CALL queryInterface(css::uno::Type const& rType) override;
 
    virtual void disposing(std::unique_lock<std::mutex>&);
 
protected:
    void throwIfDisposed(std::unique_lock<std::mutex>&)
    {
        if (m_bDisposed)
            throw css::lang::DisposedException(OUString(), static_cast<cppu::OWeakObject*>(this));
    }
    comphelper::OInterfaceContainerHelper4<css::lang::XEventListener> maEventListeners;
};
 
template <typename... Ifc>
class SAL_DLLPUBLIC_TEMPLATE WeakComponentImplHelper : public WeakComponentImplHelperBase,
                                                       public css::lang::XTypeProvider,
                                                       public Ifc...
{
public:
    virtual void SAL_CALL acquire() noexcept override { OWeakObject::acquire(); }
 
    virtual void SAL_CALL release() noexcept override { OWeakObject::release(); }
 
    // css::lang::XComponent
    virtual void SAL_CALL dispose() noexcept final override
    {
        WeakComponentImplHelperBase::dispose();
    }
    virtual void SAL_CALL addEventListener(
        css::uno::Reference<css::lang::XEventListener> const& rxListener) final override
    {
        WeakComponentImplHelperBase::addEventListener(rxListener);
    }
    virtual void SAL_CALL removeEventListener(
        css::uno::Reference<css::lang::XEventListener> const& rxListener) final override
    {
        WeakComponentImplHelperBase::removeEventListener(rxListener);
    }
 
    virtual css::uno::Any SAL_CALL queryInterface(css::uno::Type const& rType) override
    {
        return WeakComponentImplHelper_query(rType, class_data_get(), this);
    }
 
    // css::lang::XTypeProvider
    virtual css::uno::Sequence<css::uno::Type> SAL_CALL getTypes() override
    {
        static const css::uno::Sequence<css::uno::Type> aTypeList{
            cppu::UnoType<css::uno::XWeak>::get(), cppu::UnoType<css::lang::XComponent>::get(),
            cppu::UnoType<css::lang::XTypeProvider>::get(), cppu::UnoType<Ifc>::get()...
        };
        return aTypeList;
    }
    virtual css::uno::Sequence<sal_Int8> SAL_CALL getImplementationId() override
    {
        return css::uno::Sequence<sal_Int8>();
    }
 
private:
    static cppu::class_data* class_data_get()
    {
        return cppu::detail::ImplClassData<WeakComponentImplHelper, Ifc...>{}();
    }
};
 
COMPHELPER_DLLPUBLIC css::uno::Any
WeakComponentImplHelper_query(css::uno::Type const& rType, cppu::class_data* cd,
                              WeakComponentImplHelperBase* pBase);
 
} //  namespace comphelper
 
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