1/* 2 * Copyright (C) 2013 Google Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "HTMLResourcePreloader.h" 28 29#include "CachedResourceLoader.h" 30#include "Document.h" 31 32#include "MediaList.h" 33#include "MediaQueryEvaluator.h" 34#include "RenderView.h" 35 36namespace WebCore { 37 38bool PreloadRequest::isSafeToSendToAnotherThread() const 39{ 40 return m_initiator.isSafeToSendToAnotherThread() 41 && m_charset.isSafeToSendToAnotherThread() 42 && m_resourceURL.isSafeToSendToAnotherThread() 43 && m_mediaAttribute.isSafeToSendToAnotherThread() 44 && m_baseURL.isSafeToSendToAnotherThread(); 45} 46 47URL PreloadRequest::completeURL(Document& document) 48{ 49 return document.completeURL(m_resourceURL, m_baseURL.isEmpty() ? document.url() : m_baseURL); 50} 51 52CachedResourceRequest PreloadRequest::resourceRequest(Document& document) 53{ 54 ASSERT(isMainThread()); 55 CachedResourceRequest request(ResourceRequest(completeURL(document))); 56 request.setInitiator(m_initiator); 57 58 // FIXME: It's possible CORS should work for other request types? 59 if (m_resourceType == CachedResource::Script) 60 request.mutableResourceRequest().setAllowCookies(m_crossOriginModeAllowsCookies); 61 return request; 62} 63 64void HTMLResourcePreloader::preload(PreloadRequestStream requests) 65{ 66 for (auto& request : requests) 67 preload(WTF::move(request)); 68} 69 70static bool mediaAttributeMatches(Frame* frame, RenderStyle* renderStyle, const String& attributeValue) 71{ 72 RefPtr<MediaQuerySet> mediaQueries = MediaQuerySet::createAllowingDescriptionSyntax(attributeValue); 73 MediaQueryEvaluator mediaQueryEvaluator("screen", frame, renderStyle); 74 return mediaQueryEvaluator.eval(mediaQueries.get()); 75} 76 77void HTMLResourcePreloader::preload(std::unique_ptr<PreloadRequest> preload) 78{ 79 ASSERT(m_document.frame()); 80 ASSERT(m_document.renderView()); 81 if (!preload->media().isEmpty() && !mediaAttributeMatches(m_document.frame(), &m_document.renderView()->style(), preload->media())) 82 return; 83 84 CachedResourceRequest request = preload->resourceRequest(m_document); 85 m_document.cachedResourceLoader()->preload(preload->resourceType(), request, preload->charset()); 86} 87 88 89} 90