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