1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) 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 33 namespace WebCore { 34 35 HTMLImageLoader::HTMLImageLoader(Element* node) 36 : ImageLoader(node) 37 { 38 } 39 40 HTMLImageLoader::~HTMLImageLoader() 41 { 42 } 43 44 void HTMLImageLoader::dispatchLoadEvent() 45 { 46 // HTMLVideoElement uses this class to load the poster image, but it should not fire events for loading or failure. 47 if (isHTMLVideoElement(*element())) 48 return; 49 50 bool errorOccurred = image()->errorOccurred(); 51 if (isHTMLObjectElement(*element()) && !errorOccurred) 52 errorOccurred = (image()->response().httpStatusCode() >= 400); // An <object> considers a 404 to be an error and should fire onerror. 53 element()->dispatchEvent(Event::create(errorOccurred ? EventTypeNames::error : EventTypeNames::load)); 54 } 55 56 String HTMLImageLoader::sourceURI(const AtomicString& attr) const 57 { 58 return stripLeadingAndTrailingHTMLSpaces(attr); 59 } 60 61 void HTMLImageLoader::notifyFinished(Resource*) 62 { 63 ImageResource* cachedImage = image(); 64 65 RefPtrWillBeRawPtr<Element> element = this->element(); 66 ImageLoader::notifyFinished(cachedImage); 67 68 bool loadError = cachedImage->errorOccurred() || cachedImage->response().httpStatusCode() >= 400; 69 70 if (loadError && isHTMLObjectElement(*element)) 71 toHTMLObjectElement(element)->renderFallbackContent(); 72 } 73 74 } 75