/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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 <sal/config.h>

#include <memory>
#include <mutex>
#include <vector>

#include <com/sun/star/lang/XEventListener.hpp>
#include <com/sun/star/lang/EventObject.hpp>
#include <com/sun/star/awt/XControl.hpp>
#include <osl/thread.hxx>
#include <osl/conditn.hxx>
#include <cppuhelper/component.hxx>
#include <comphelper/uno3.hxx>
#include <rtl/ref.hxx>


using namespace comphelper;


namespace frm
{


typedef ::osl::Thread   OComponentEventThread_TBASE;
class OComponentEventThread
            :public OComponentEventThread_TBASE
            ,public css::lang::XEventListener
            ,public ::cppu::OWeakObject
{
    typedef std::vector<std::unique_ptr<css::lang::EventObject>> ThreadEvents;
    typedef std::vector< css::uno::Reference< css::uno::XAdapter> > ThreadObjects;

    std::mutex                      m_aMutex;
    ::osl::Condition                m_aCond;            // Queue filled?
    ThreadEvents                    m_aEvents;          // EventQueue
    ThreadObjects                   m_aControls;        // Control for Submit
    std::vector<bool>               m_aFlags;           // Flags for Submit/Reset

    rtl::Reference<::cppu::OComponentHelper>      m_xComp;    // Implementation of the Control

protected:

    // XThread
    virtual void SAL_CALL run() override;

    virtual void SAL_CALL onTerminated() override;

    // Edit an Event:
    // The mutex is not locked, but pCompImpl stays valid in any case.
    // pEvt can be a derived type, namely the one that cloneEvent returns.
    // rControl is only set, if a Control has been passed in addEvent.
    // Because the Control is only held as a WeakRef, it can disappear in the meantime.
    virtual void processEvent( ::cppu::OComponentHelper* _pCompImpl,
                               const css::lang::EventObject* _pEvt,
                               const css::uno::Reference< css::awt::XControl>& _rControl,
                               bool _bFlag) = 0;

public:

    // UNO binding
    DECLARE_UNO3_DEFAULTS(OComponentEventThread, OWeakObject)
    virtual css::uno::Any SAL_CALL queryInterface(const css::uno::Type& _rType) override;

    explicit OComponentEventThread(::cppu::OComponentHelper* pCompImpl);
    virtual ~OComponentEventThread() override;

    void addEvent( std::unique_ptr<css::lang::EventObject> _pEvt );
    void addEvent( std::unique_ptr<css::lang::EventObject> _pEvt, const css::uno::Reference< css::awt::XControl>& rControl,
                   bool bFlag = false );

    // css::lang::XEventListener
    virtual void SAL_CALL disposing(const css::lang::EventObject& _rSource ) override;

    // Resolve ambiguity: both OWeakObject and osl::Thread have these memory operators
    using osl::Thread::operator new;
    using osl::Thread::operator delete;

private:
    void    impl_clearEventQueue();
};


}   // namespace frm

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