| /* |
| * 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. |
| * |
| */ |
| |
| #ifndef LinkLoader_h |
| #define LinkLoader_h |
| |
| #include "core/CoreExport.h" |
| #include "core/dom/Modulator.h" |
| #include "core/loader/LinkLoaderClient.h" |
| #include "platform/CrossOriginAttributeValue.h" |
| #include "platform/PrerenderClient.h" |
| #include "platform/loader/fetch/ResourceOwner.h" |
| #include "platform/wtf/Optional.h" |
| |
| namespace blink { |
| |
| class Document; |
| class LinkRelAttribute; |
| class LocalFrame; |
| class NetworkHintsInterface; |
| class PrerenderHandle; |
| struct ViewportDescriptionWrapper; |
| |
| // The LinkLoader can load link rel types icon, dns-prefetch, prefetch, and |
| // prerender. |
| class CORE_EXPORT LinkLoader final : public SingleModuleClient, |
| public PrerenderClient { |
| USING_GARBAGE_COLLECTED_MIXIN(LinkLoader); |
| |
| public: |
| static LinkLoader* Create(LinkLoaderClient* client) { |
| return new LinkLoader(client, client->GetLoadingTaskRunner()); |
| } |
| ~LinkLoader() override; |
| |
| // from PrerenderClient |
| void DidStartPrerender() override; |
| void DidStopPrerender() override; |
| void DidSendLoadForPrerender() override; |
| void DidSendDOMContentLoadedForPrerender() override; |
| |
| void Abort(); |
| bool LoadLink(const LinkRelAttribute&, |
| CrossOriginAttributeValue, |
| const String& type, |
| const String& as, |
| const String& media, |
| const String& nonce, |
| ReferrerPolicy, |
| const KURL&, |
| Document&, |
| const NetworkHintsInterface&); |
| enum CanLoadResources { |
| kOnlyLoadResources, |
| kDoNotLoadResources, |
| kLoadResourcesAndPreconnect |
| }; |
| // Media links cannot be preloaded until the first chunk is parsed. The rest |
| // can be preloaded at commit time. |
| enum MediaPreloadPolicy { kLoadAll, kOnlyLoadNonMedia, kOnlyLoadMedia }; |
| static void LoadLinksFromHeader(const String& header_value, |
| const KURL& base_url, |
| LocalFrame&, |
| Document*, // can be nullptr |
| const NetworkHintsInterface&, |
| CanLoadResources, |
| MediaPreloadPolicy, |
| ViewportDescriptionWrapper*); |
| static WTF::Optional<Resource::Type> GetResourceTypeFromAsAttribute( |
| const String& as); |
| |
| Resource* GetResourceForTesting(); |
| |
| void Trace(blink::Visitor*) override; |
| |
| private: |
| class FinishObserver; |
| LinkLoader(LinkLoaderClient*, scoped_refptr<WebTaskRunner>); |
| |
| void NotifyFinished(); |
| // SingleModuleClient implementation |
| void NotifyModuleLoadFinished(ModuleScript*) override; |
| |
| Member<FinishObserver> finish_observer_; |
| Member<LinkLoaderClient> client_; |
| |
| Member<PrerenderHandle> prerender_; |
| }; |
| |
| } // namespace blink |
| |
| #endif |