/* * Copyright (C) 2011 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #pragma once #include "CachedResource.h" #include "CachedResourceClient.h" #include "CachedResourceHandle.h" #include "LinkLoaderClient.h" #include <wtf/WeakPtr.h> namespace WebCore { class Document; class URL; class LinkPreloadResourceClient; struct LinkRelAttribute; class LinkLoader : private CachedResourceClient { public: explicit LinkLoader(LinkLoaderClient&); virtual ~LinkLoader(); bool loadLink(const LinkRelAttribute&, const URL&, const String& as, const String& media, const String& type, const String& crossOrigin, Document&); static std::optional<CachedResource::Type> resourceTypeFromAsAttribute(const String& as); enum class MediaAttributeCheck { MediaAttributeEmpty, MediaAttributeNotEmpty }; static void loadLinksFromHeader(const String& headerValue, const URL& baseURL, Document&, MediaAttributeCheck); static bool isSupportedType(CachedResource::Type, const String& mimeType); WeakPtr<LinkLoader> createWeakPtr() { return m_weakPtrFactory.createWeakPtr(); } void triggerEvents(const CachedResource&); void cancelLoad(); private: void notifyFinished(CachedResource&) override; static std::unique_ptr<LinkPreloadResourceClient> preloadIfNeeded(const LinkRelAttribute&, const URL& href, Document&, const String& as, const String& media, const String& type, const String& crossOriginMode, LinkLoader*); LinkLoaderClient& m_client; CachedResourceHandle<CachedResource> m_cachedLinkResource; std::unique_ptr<LinkPreloadResourceClient> m_preloadResourceClient; WeakPtrFactory<LinkLoader> m_weakPtrFactory; }; }