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/*
* 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;
};
}
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