1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#include "config.h"
23#include "core/html/HTMLImageLoader.h"
24
25#include "core/HTMLNames.h"
26#include "core/dom/Element.h"
27#include "core/events/Event.h"
28#include "core/fetch/ImageResource.h"
29#include "core/html/HTMLImageElement.h"
30#include "core/html/HTMLObjectElement.h"
31#include "core/html/parser/HTMLParserIdioms.h"
32#include "platform/Logging.h"
33
34namespace blink {
35
36HTMLImageLoader::HTMLImageLoader(Element* node)
37    : ImageLoader(node)
38{
39}
40
41HTMLImageLoader::~HTMLImageLoader()
42{
43}
44
45void HTMLImageLoader::dispatchLoadEvent()
46{
47    WTF_LOG(Timers, "HTMLImageLoader::dispatchLoadEvent %p", this);
48
49    // HTMLVideoElement uses this class to load the poster image, but it should not fire events for loading or failure.
50    if (isHTMLVideoElement(*element()))
51        return;
52
53    bool errorOccurred = image()->errorOccurred();
54    if (isHTMLObjectElement(*element()) && !errorOccurred)
55        errorOccurred = (image()->response().httpStatusCode() >= 400); // An <object> considers a 404 to be an error and should fire onerror.
56    element()->dispatchEvent(Event::create(errorOccurred ? EventTypeNames::error : EventTypeNames::load));
57}
58
59String HTMLImageLoader::sourceURI(const AtomicString& attr) const
60{
61    return stripLeadingAndTrailingHTMLSpaces(attr);
62}
63
64void HTMLImageLoader::notifyFinished(Resource*)
65{
66    ImageResource* cachedImage = image();
67
68    RefPtrWillBeRawPtr<Element> element = this->element();
69    ImageLoader::notifyFinished(cachedImage);
70
71    bool loadError = cachedImage->errorOccurred() || cachedImage->response().httpStatusCode() >= 400;
72
73    if (loadError && isHTMLObjectElement(*element))
74        toHTMLObjectElement(element)->renderFallbackContent();
75}
76
77}
78