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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved. | 4 * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved. |
5 * | 5 * |
6 * This library is free software; you can redistribute it and/or | 6 * This library is free software; you can redistribute it and/or |
7 * modify it under the terms of the GNU Library General Public | 7 * modify it under the terms of the GNU Library General Public |
8 * License as published by the Free Software Foundation; either | 8 * License as published by the Free Software Foundation; either |
9 * version 2 of the License, or (at your option) any later version. | 9 * version 2 of the License, or (at your option) any later version. |
10 * | 10 * |
11 * This library is distributed in the hope that it will be useful, | 11 * This library is distributed in the hope that it will be useful, |
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 * Library General Public License for more details. | 14 * Library General Public License for more details. |
15 * | 15 * |
16 * You should have received a copy of the GNU Library General Public License | 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 | 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, | 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 * Boston, MA 02110-1301, USA. | 19 * Boston, MA 02110-1301, USA. |
20 */ | 20 */ |
21 | 21 |
22 #include "config.h" | 22 #include "config.h" |
23 #include "core/html/HTMLImageLoader.h" | 23 #include "core/html/HTMLImageLoader.h" |
24 | 24 |
25 #include "core/HTMLNames.h" | 25 #include "core/HTMLNames.h" |
26 #include "core/dom/Element.h" | 26 #include "core/dom/Element.h" |
27 #include "core/events/Event.h" | 27 #include "core/events/Event.h" |
28 #include "core/fetch/ImageResource.h" | 28 #include "core/fetch/ImageResource.h" |
29 #include "core/html/HTMLImageElement.h" | 29 #include "core/html/HTMLImageElement.h" |
30 #include "core/html/HTMLInputElement.h" | |
31 #include "core/html/HTMLObjectElement.h" | 30 #include "core/html/HTMLObjectElement.h" |
32 #include "core/html/parser/HTMLParserIdioms.h" | 31 #include "core/html/parser/HTMLParserIdioms.h" |
33 #include "platform/Logging.h" | 32 #include "platform/Logging.h" |
34 | 33 |
35 namespace blink { | 34 namespace blink { |
36 | 35 |
37 using namespace HTMLNames; | 36 HTMLImageLoader::HTMLImageLoader(Element* node) |
38 | 37 : ImageLoader(node) |
39 HTMLImageLoader::HTMLImageLoader(Element* element) | |
40 : ImageLoader(element) | |
41 , m_loadFallbackContentTimer(this, &HTMLImageLoader::timerFired) | |
42 { | 38 { |
43 } | 39 } |
44 | 40 |
45 HTMLImageLoader::~HTMLImageLoader() | 41 HTMLImageLoader::~HTMLImageLoader() |
46 { | 42 { |
47 } | 43 } |
48 | 44 |
49 void HTMLImageLoader::dispatchLoadEvent() | 45 void HTMLImageLoader::dispatchLoadEvent() |
50 { | 46 { |
51 WTF_LOG(Timers, "HTMLImageLoader::dispatchLoadEvent %p", this); | 47 WTF_LOG(Timers, "HTMLImageLoader::dispatchLoadEvent %p", this); |
52 | 48 |
53 // HTMLVideoElement uses this class to load the poster image, but it should
not fire events for loading or failure. | 49 // HTMLVideoElement uses this class to load the poster image, but it should
not fire events for loading or failure. |
54 if (isHTMLVideoElement(*element())) | 50 if (isHTMLVideoElement(*element())) |
55 return; | 51 return; |
56 | 52 |
57 bool errorOccurred = image()->errorOccurred(); | 53 bool errorOccurred = image()->errorOccurred(); |
58 if (isHTMLObjectElement(*element()) && !errorOccurred) | 54 if (isHTMLObjectElement(*element()) && !errorOccurred) |
59 errorOccurred = (image()->response().httpStatusCode() >= 400); // An <ob
ject> considers a 404 to be an error and should fire onerror. | 55 errorOccurred = (image()->response().httpStatusCode() >= 400); // An <ob
ject> considers a 404 to be an error and should fire onerror. |
60 element()->dispatchEvent(Event::create(errorOccurred ? EventTypeNames::error
: EventTypeNames::load)); | 56 element()->dispatchEvent(Event::create(errorOccurred ? EventTypeNames::error
: EventTypeNames::load)); |
61 } | 57 } |
62 | 58 |
63 String HTMLImageLoader::sourceURI(const AtomicString& attr) const | 59 String HTMLImageLoader::sourceURI(const AtomicString& attr) const |
64 { | 60 { |
65 return stripLeadingAndTrailingHTMLSpaces(attr); | 61 return stripLeadingAndTrailingHTMLSpaces(attr); |
66 } | 62 } |
67 | 63 |
68 static void loadFallbackContentForElement(Element* element) | |
69 { | |
70 if (isHTMLImageElement(element)) | |
71 toHTMLImageElement(element)->ensureFallbackContent(); | |
72 else if (isHTMLInputElement(element)) | |
73 toHTMLInputElement(element)->ensureFallbackContent(); | |
74 } | |
75 | |
76 void HTMLImageLoader::noImageResourceToLoad() | |
77 { | |
78 // FIXME: Use fallback content even when there is no alt-text. The only bloc
ker is the large amount of rebaselining it requires. | |
79 if (!toHTMLElement(element())->altText().isEmpty()) | |
80 loadFallbackContentForElement(element()); | |
81 } | |
82 | |
83 void HTMLImageLoader::notifyFinished(Resource*) | 64 void HTMLImageLoader::notifyFinished(Resource*) |
84 { | 65 { |
85 ImageResource* cachedImage = image(); | 66 ImageResource* cachedImage = image(); |
| 67 |
86 RefPtrWillBeRawPtr<Element> element = this->element(); | 68 RefPtrWillBeRawPtr<Element> element = this->element(); |
87 ImageLoader::notifyFinished(cachedImage); | 69 ImageLoader::notifyFinished(cachedImage); |
88 | 70 |
89 bool loadError = cachedImage->errorOccurred() || cachedImage->response().htt
pStatusCode() >= 400; | 71 bool loadError = cachedImage->errorOccurred() || cachedImage->response().htt
pStatusCode() >= 400; |
90 if (isHTMLImageElement(*element)) { | |
91 if (loadError) | |
92 ensureFallbackContent(); | |
93 else | |
94 toHTMLImageElement(element)->ensurePrimaryContent(); | |
95 } | |
96 | |
97 if (isHTMLInputElement(*element)) { | |
98 if (loadError) | |
99 ensureFallbackContent(); | |
100 else | |
101 toHTMLInputElement(element)->ensurePrimaryContent(); | |
102 } | |
103 | 72 |
104 if (loadError && isHTMLObjectElement(*element)) | 73 if (loadError && isHTMLObjectElement(*element)) |
105 toHTMLObjectElement(element)->renderFallbackContent(); | 74 toHTMLObjectElement(element)->renderFallbackContent(); |
106 } | 75 } |
107 | 76 |
108 void HTMLImageLoader::ensureFallbackContent() | |
109 { | |
110 if (image()->url().protocolIsData()) | |
111 m_loadFallbackContentTimer.startOneShot(0, FROM_HERE); | |
112 else | |
113 loadFallbackContentForElement(element()); | |
114 } | 77 } |
115 | |
116 void HTMLImageLoader::timerFired(Timer<HTMLImageLoader>*) | |
117 { | |
118 loadFallbackContentForElement(element()); | |
119 } | |
120 } | |
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