/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
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 * 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 <salinst.hxx>
#include <svdata.hxx>
#include <unx/X11DisplayConnectionDispatch.hxx>
#include <unx/X11_selection.hxx>
#include <unx/salinst.h>

#include <tools/debug.hxx>
#include <vcl/svapp.hxx>

using namespace vcl;

X11DisplayConnectionDispatch::X11DisplayConnectionDispatch() {}

X11DisplayConnectionDispatch::~X11DisplayConnectionDispatch() {}

void X11DisplayConnectionDispatch::start()
{
    DBG_TESTSOLARMUTEX();
    GetX11SalInstance()->SetEventCallback(this);
}

void X11DisplayConnectionDispatch::terminate()
{
    DBG_TESTSOLARMUTEX();
    ImplSVData* pSVData = ImplGetSVData();

    if (pSVData)
    {
        GetX11SalInstance()->SetEventCallback(nullptr);
    }

    SolarMutexReleaser aRel;

    std::scoped_lock aGuard(m_aMutex);
    std::vector<rtl::Reference<x11::SelectionManager>> aLocalList(m_aHandlers);
    for (auto const& elem : aLocalList)
        elem->shutdown();
}

void X11DisplayConnectionDispatch::addEventHandler(
    const rtl::Reference<x11::SelectionManager>& handler)
{
    std::scoped_lock aGuard(m_aMutex);

    m_aHandlers.push_back(handler);
}

void X11DisplayConnectionDispatch::removeEventHandler(
    const rtl::Reference<x11::SelectionManager>& handler)
{
    std::scoped_lock aGuard(m_aMutex);

    std::erase(m_aHandlers, handler);
}

bool X11DisplayConnectionDispatch::dispatchEvent(const void* pEvent)
{
    SolarMutexReleaser aRel;

    std::vector<rtl::Reference<x11::SelectionManager>> handlers;
    {
        std::scoped_lock aGuard(m_aMutex);
        handlers = m_aHandlers;
    }
    for (auto const& handle : handlers)
        if (handle->handleEvent(pEvent))
            return true;
    return false;
}

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