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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, 2010, 2015 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 "CachedImage.h"
#include "CommonVM.h"
#include "Element.h"
#include "Event.h"
#include "EventNames.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "HTMLVideoElement.h"
#include "LocalDOMWindow.h"
#include "Settings.h"
#include "JSDOMWindowBase.h"
#include <JavaScriptCore/JSCInlines.h>
#include <JavaScriptCore/JSLock.h>
namespace WebCore {
HTMLImageLoader::HTMLImageLoader(Element& element)
: ImageLoader(element)
{
}
HTMLImageLoader::~HTMLImageLoader() = default;
void HTMLImageLoader::dispatchLoadEvent()
{
#if ENABLE(VIDEO)
// HTMLVideoElement uses this class to load the poster image, but it should not fire events for loading or failure.
if (is<HTMLVideoElement>(element()))
return;
#endif
#if PLATFORM(IOS_FAMILY)
// iOS loads PDF inside <object> elements as images since we don't support loading them
// as plugins (see logic in WebFrameLoaderClient::objectContentType()). However, WebKit
// doesn't normally fire load/error events when loading <object> as plugins. Therefore,
// firing such events for PDF loads on iOS can cause confusion on some sites.
// See rdar://107795151.
if (auto* objectElement = dynamicDowncast<HTMLObjectElement>(element())) {
if (MIMETypeRegistry::isPDFMIMEType(objectElement->serviceType()))
return;
}
#endif
bool errorOccurred = image()->errorOccurred();
if (!errorOccurred && image()->response().httpStatusCode() >= 400)
errorOccurred = is<HTMLObjectElement>(element()); // An <object> considers a 404 to be an error and should fire onerror.
element().dispatchEvent(Event::create(errorOccurred ? eventNames().errorEvent : eventNames().loadEvent, Event::CanBubble::No, Event::IsCancelable::No));
}
void HTMLImageLoader::notifyFinished(CachedResource&, const NetworkLoadMetrics& metrics, LoadWillContinueInAnotherProcess loadWillContinueInAnotherProcess)
{
ASSERT(image());
CachedImage& cachedImage = *image();
Ref<Element> protect(element());
ImageLoader::notifyFinished(cachedImage, metrics, loadWillContinueInAnotherProcess);
bool loadError = cachedImage.errorOccurred() || cachedImage.response().httpStatusCode() >= 400;
if (!loadError) {
if (!element().isConnected()) {
JSC::VM& vm = commonVM();
JSC::JSLockHolder lock(vm);
// FIXME: Adopt reportExtraMemoryVisited, and switch to reportExtraMemoryAllocated.
// https://bugs.webkit.org/show_bug.cgi?id=142595
vm.heap.deprecatedReportExtraMemory(cachedImage.encodedSize());
}
}
if (loadError) {
if (RefPtr objectElement = dynamicDowncast<HTMLObjectElement>(element()))
objectElement->renderFallbackContent();
}
}
}
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