htmlimageloader.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 1999 Lars Knoll ([e-mail])
 *           (C) 1999 Antti Koivisto ([e-mail])
 * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "config.h"
#include "HTMLImageLoader.h"

#include "CSSHelper.h"
#include "CachedImage.h"
#include "Element.h"
#include "EventNames.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"

namespace WebCore {

HTMLImageLoader::HTMLImageLoader(Element* node)
    : ImageLoader(node)
{
}

HTMLImageLoader::~HTMLImageLoader()
{
}

void HTMLImageLoader::dispatchLoadEvent()
{
    if (!haveFiredLoadEvent() && image()) {
        setHaveFiredLoadEvent(true);
        element()->dispatchEventForType(image()->errorOccurred() ? eventNames().errorEvent : eventNames().loadEvent, false, false);
    }
}

String HTMLImageLoader::sourceURI(const AtomicString& attr) const
{
    return parseURL(attr);
}

void HTMLImageLoader::notifyFinished(CachedResource* image)
{
    Element* elem = element();
    ImageLoader::notifyFinished(image);

    if (image->errorOccurred() && elem->hasTagName(HTMLNames::objectTag))
        static_cast<HTMLObjectElement*>(elem)->renderFallbackContent();
}

}