LinkLoader.h   [plain text]


/*
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#pragma once

#include "CachedResource.h"
#include "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include "LinkLoaderClient.h"

#include <wtf/WeakPtr.h>

namespace WebCore {

class Document;
class LinkPreloadResourceClient;

struct LinkRelAttribute;

class LinkLoader : private CachedResourceClient, public CanMakeWeakPtr<LinkLoader> {
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 Optional<CachedResource::Type> resourceTypeFromAsAttribute(const String& as);

    enum class MediaAttributeCheck { MediaAttributeEmpty, MediaAttributeNotEmpty, SkipMediaAttributeCheck };
    static void loadLinksFromHeader(const String& headerValue, const URL& baseURL, Document&, MediaAttributeCheck);
    static bool isSupportedType(CachedResource::Type, const String& mimeType);

    void triggerEvents(const CachedResource&);
    void cancelLoad();

private:
    void notifyFinished(CachedResource&) override;
    static void preconnectIfNeeded(const LinkRelAttribute&, const URL& href, Document&, const String& crossOrigin);
    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*);
    void prefetchIfNeeded(const LinkRelAttribute&, const URL& href, Document&);

    LinkLoaderClient& m_client;
    CachedResourceHandle<CachedResource> m_cachedLinkResource;
    std::unique_ptr<LinkPreloadResourceClient> m_preloadResourceClient;
};

}