1/* 2 * (C) 1999-2003 Lars Knoll (knoll@kde.org) 3 * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21#include "config.h" 22#include "core/css/CSSImageValue.h" 23 24#include "FetchInitiatorTypeNames.h" 25#include "core/css/CSSParser.h" 26#include "core/dom/Document.h" 27#include "core/fetch/CrossOriginAccessControl.h" 28#include "core/fetch/FetchRequest.h" 29#include "core/fetch/ImageResource.h" 30#include "core/rendering/style/StyleFetchedImage.h" 31#include "core/rendering/style/StylePendingImage.h" 32 33namespace WebCore { 34 35CSSImageValue::CSSImageValue(const String& url) 36 : CSSValue(ImageClass) 37 , m_url(url) 38 , m_accessedImage(false) 39{ 40} 41 42CSSImageValue::CSSImageValue(const String& url, StyleImage* image) 43 : CSSValue(ImageClass) 44 , m_url(url) 45 , m_image(image) 46 , m_accessedImage(true) 47{ 48} 49 50CSSImageValue::~CSSImageValue() 51{ 52} 53 54StyleImage* CSSImageValue::cachedOrPendingImage() 55{ 56 if (!m_image) 57 m_image = StylePendingImage::create(this); 58 59 return m_image.get(); 60} 61 62StyleFetchedImage* CSSImageValue::cachedImage(ResourceFetcher* fetcher, const ResourceLoaderOptions& options, CORSEnabled corsEnabled) 63{ 64 ASSERT(fetcher); 65 66 if (!m_accessedImage) { 67 m_accessedImage = true; 68 69 FetchRequest request(ResourceRequest(fetcher->document()->completeURL(m_url)), m_initiatorName.isEmpty() ? FetchInitiatorTypeNames::css : m_initiatorName, options); 70 71 if (corsEnabled == PotentiallyCORSEnabled) 72 updateRequestForAccessControl(request.mutableResourceRequest(), fetcher->document()->securityOrigin(), options.allowCredentials); 73 74 if (ResourcePtr<ImageResource> cachedImage = fetcher->fetchImage(request)) 75 m_image = StyleFetchedImage::create(cachedImage.get()); 76 } 77 78 return (m_image && m_image->isImageResource()) ? toStyleFetchedImage(m_image) : 0; 79} 80 81bool CSSImageValue::hasFailedOrCanceledSubresources() const 82{ 83 if (!m_image || !m_image->isImageResource()) 84 return false; 85 if (Resource* cachedResource = toStyleFetchedImage(m_image)->cachedImage()) 86 return cachedResource->loadFailedOrCanceled(); 87 return true; 88} 89 90bool CSSImageValue::equals(const CSSImageValue& other) const 91{ 92 return m_url == other.m_url; 93} 94 95String CSSImageValue::customCSSText() const 96{ 97 return "url(" + quoteCSSURLIfNeeded(m_url) + ")"; 98} 99 100PassRefPtr<CSSValue> CSSImageValue::cloneForCSSOM() const 101{ 102 // NOTE: We expose CSSImageValues as URI primitive values in CSSOM to maintain old behavior. 103 RefPtr<CSSPrimitiveValue> uriValue = CSSPrimitiveValue::create(m_url, CSSPrimitiveValue::CSS_URI); 104 uriValue->setCSSOMSafe(); 105 return uriValue.release(); 106} 107 108bool CSSImageValue::knownToBeOpaque(const RenderObject* renderer) const 109{ 110 return m_image ? m_image->knownToBeOpaque(renderer) : false; 111} 112 113} // namespace WebCore 114