1/* 2 * Copyright (C) 2011 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 */ 31 32#ifndef LinkLoader_h 33#define LinkLoader_h 34 35#include "core/fetch/ResourceClient.h" 36#include "core/fetch/ResourceOwner.h" 37#include "core/loader/LinkLoaderClient.h" 38#include "platform/PrerenderClient.h" 39#include "platform/Timer.h" 40#include "wtf/OwnPtr.h" 41 42namespace blink { 43 44class Document; 45class LinkRelAttribute; 46class PrerenderHandle; 47 48// The LinkLoader can load link rel types icon, dns-prefetch, subresource, prefetch and prerender. 49class LinkLoader FINAL : public ResourceOwner<Resource, ResourceClient>, public PrerenderClient { 50 51public: 52 explicit LinkLoader(LinkLoaderClient*); 53 virtual ~LinkLoader(); 54 55 // from ResourceClient 56 virtual void notifyFinished(Resource*) OVERRIDE; 57 58 // from PrerenderClient 59 virtual void didStartPrerender() OVERRIDE; 60 virtual void didStopPrerender() OVERRIDE; 61 virtual void didSendLoadForPrerender() OVERRIDE; 62 virtual void didSendDOMContentLoadedForPrerender() OVERRIDE; 63 64 void released(); 65 bool loadLink(const LinkRelAttribute&, const AtomicString& crossOriginMode, const String& type, const KURL&, Document&); 66 67private: 68 void linkLoadTimerFired(Timer<LinkLoader>*); 69 void linkLoadingErrorTimerFired(Timer<LinkLoader>*); 70 71 LinkLoaderClient* m_client; 72 73 Timer<LinkLoader> m_linkLoadTimer; 74 Timer<LinkLoader> m_linkLoadingErrorTimer; 75 76 OwnPtr<PrerenderHandle> m_prerender; 77}; 78 79} 80 81#endif 82