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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* 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 "DocLoader.h"
#include "Document.h"
#include "Element.h"
#include "EventNames.h"
#include "HTMLNames.h"
#include "RenderImage.h"
using namespace std;
namespace WebCore {
using namespace EventNames;
using namespace HTMLNames;
HTMLImageLoader::HTMLImageLoader(Element* elt)
: m_element(elt)
, m_image(0)
, m_firedLoad(true)
, m_imageComplete(true)
, m_loadManually(false)
{
}
HTMLImageLoader::~HTMLImageLoader()
{
if (m_image)
m_image->deref(this);
m_element->document()->removeImage(this);
}
void HTMLImageLoader::setImage(CachedImage *newImage)
{
CachedImage *oldImage = m_image;
if (newImage != oldImage) {
setLoadingImage(newImage);
m_firedLoad = true;
m_imageComplete = true;
if (newImage)
newImage->ref(this);
if (oldImage)
oldImage->deref(this);
}
if (RenderObject* renderer = element()->renderer())
if (renderer->isImage())
static_cast<RenderImage*>(renderer)->resetAnimation();
}
void HTMLImageLoader::setLoadingImage(CachedImage *loadingImage)
{
m_firedLoad = false;
m_imageComplete = false;
m_image = loadingImage;
}
void HTMLImageLoader::updateFromElement()
{
// If we're not making renderers for the page, then don't load images. We don't want to slow
// down the raw HTML parsing case by loading images we don't intend to display.
Element* elem = element();
Document* doc = elem->document();
if (!doc->renderer())
return;
AtomicString attr = elem->getAttribute(elem->imageSourceAttributeName());
// Treat a lack of src or empty string for src as no image at all.
CachedImage *newImage = 0;
if (!attr.isEmpty()) {
if (m_loadManually) {
doc->docLoader()->setAutoLoadImages(false);
newImage = new CachedImage(doc->docLoader(), parseURL(attr), false /* not for cache */);
newImage->setLoading(true);
newImage->setDocLoader(doc->docLoader());
doc->docLoader()->m_docResources.set(newImage->url(), newImage);
} else
newImage = doc->docLoader()->requestImage(parseURL(attr));
}
CachedImage *oldImage = m_image;
if (newImage != oldImage) {
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!doc->ownerElement() && newImage)
printf("Image requested at %d\n", doc->elapsedTime());
#endif
setLoadingImage(newImage);
if (newImage)
newImage->ref(this);
if (oldImage)
oldImage->deref(this);
}
if (RenderObject* renderer = elem->renderer())
if (renderer->isImage())
static_cast<RenderImage*>(renderer)->resetAnimation();
}
void HTMLImageLoader::dispatchLoadEvent()
{
if (!haveFiredLoadEvent() && image()) {
setHaveFiredLoadEvent(true);
element()->dispatchHTMLEvent(image()->errorOccurred() ? errorEvent : loadEvent, false, false);
}
}
void HTMLImageLoader::notifyFinished(CachedResource *image)
{
m_imageComplete = true;
Element* elem = element();
Document* doc = elem->document();
doc->dispatchImageLoadEventSoon(this);
#ifdef INSTRUMENT_LAYOUT_SCHEDULING
if (!doc->ownerElement())
printf("Image loaded at %d\n", doc->elapsedTime());
#endif
if (RenderObject* renderer = elem->renderer())
if (renderer->isImage())
static_cast<RenderImage*>(renderer)->setCachedImage(m_image);
}
}
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