/*

 * Copyright (C) 2010 Apple Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "NetscapePluginModule.h"

using namespace WebCore;

namespace WebKit {

static Vector<NetscapePluginModule*>& initializedNetscapePluginModules()

{

    DEFINE_STATIC_LOCAL(Vector<NetscapePluginModule*>, initializedNetscapePluginModules, ());

    return initializedNetscapePluginModules;

}

NetscapePluginModule::NetscapePluginModule(const String& pluginPath)

    : m_pluginPath(pluginPath)

    , m_isInitialized(false)

    , m_pluginCount(0)

    , m_shutdownProcPtr(0)

    , m_pluginFuncs()

{

}

NetscapePluginModule::~NetscapePluginModule()

{

    ASSERT(initializedNetscapePluginModules().find(this) == notFound);

}

void NetscapePluginModule::pluginCreated()

{

    m_pluginCount++;

}

void NetscapePluginModule::pluginDestroyed()

{

    ASSERT(m_pluginCount > 0);

    m_pluginCount--;

    if (!m_pluginCount)

        shutdown();

}

void NetscapePluginModule::shutdown()

{

    ASSERT(m_isInitialized);

    m_shutdownProcPtr();

    size_t pluginModuleIndex = initializedNetscapePluginModules().find(this);

    ASSERT(pluginModuleIndex != notFound);

    initializedNetscapePluginModules().remove(pluginModuleIndex);

}

PassRefPtr<NetscapePluginModule> NetscapePluginModule::getOrCreate(const String& pluginPath)

{

    // First, see if we already have a module with this plug-in path.

    for (size_t i = 0; i < initializedNetscapePluginModules().size(); ++i) {

        NetscapePluginModule* pluginModule = initializedNetscapePluginModules()[i];

        if (pluginModule->m_pluginPath == pluginPath)

            return pluginModule;

    }

    RefPtr<NetscapePluginModule> pluginModule(adoptRef(new NetscapePluginModule(pluginPath)));

    // Try to load and initialize the plug-in module.

    if (!pluginModule->load())

        return 0;

    return pluginModule.release();

}

bool NetscapePluginModule::load()

{

    if (!tryLoad()) {

        unload();

        return false;

    }

    m_isInitialized = true;

    ASSERT(initializedNetscapePluginModules().find(this) == notFound);

    initializedNetscapePluginModules().append(this);

    return true;

}

} // namespace WebKit