Source/WebCore/platform/FileIconLoader.cpp

/*
 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2011 Google 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. 
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE 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 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 "config.h"
#include "FileIconLoader.h"

#include "Icon.h"

namespace WebCore {

FileIconLoaderClient::~FileIconLoaderClient()
{
    discardLoader();
}

FileIconLoader* FileIconLoaderClient::newFileIconLoader()
{
    discardLoader();

    m_loader = FileIconLoader::create(this);
    return m_loader.get();
}

void FileIconLoaderClient::discardLoader()
{
    if (m_loader)
        m_loader->disconnectClient();
}

PassRefPtr<FileIconLoader> FileIconLoader::create(FileIconLoaderClient* client)
{
    return adoptRef(new FileIconLoader(client));
}

void FileIconLoader::disconnectClient()
{
    m_client = 0;
}

void FileIconLoader::notifyFinished(PassRefPtr<Icon> icon)
{
    if (m_client)
        m_client->updateRendering(icon);
}

FileIconLoader::FileIconLoader(FileIconLoaderClient* client)
    : m_client(client)
{
}

}