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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* ImageCacheKey is the key type for the image cache (see imgLoader.h).
*/
#ifndef mozilla_image_src_ImageCacheKey_h
#define mozilla_image_src_ImageCacheKey_h
#include "mozilla/BasePrincipal.h"
#include "mozilla/Maybe.h"
#include "mozilla/RefPtr.h"
class nsIDocument;
class nsIURI;
namespace mozilla {
namespace image {
class ImageURL;
/**
* An ImageLib cache entry key.
*
* We key the cache on the initial URI (before any redirects), with some
* canonicalization applied. See ComputeHash() for the details.
* Controlled documents do not share their cache entries with
* non-controlled documents, or other controlled documents.
*/
class ImageCacheKey final
{
public:
ImageCacheKey(nsIURI* aURI, const PrincipalOriginAttributes& aAttrs,
nsIDocument* aDocument, nsresult& aRv);
ImageCacheKey(ImageURL* aURI, const PrincipalOriginAttributes& aAttrs,
nsIDocument* aDocument);
ImageCacheKey(const ImageCacheKey& aOther);
ImageCacheKey(ImageCacheKey&& aOther);
bool operator==(const ImageCacheKey& aOther) const;
uint32_t Hash() const { return mHash; }
/// A weak pointer to the URI spec for this cache entry. For logging only.
const char* Spec() const;
/// Is this cache entry for a chrome image?
bool IsChrome() const { return mIsChrome; }
/// A token indicating which service worker controlled document this entry
/// belongs to, if any.
void* ControlledDocument() const { return mControlledDocument; }
private:
static uint32_t ComputeHash(ImageURL* aURI,
const Maybe<uint64_t>& aBlobSerial,
const PrincipalOriginAttributes& aAttrs,
void* aControlledDocument);
static void* GetControlledDocumentToken(nsIDocument* aDocument);
RefPtr<ImageURL> mURI;
Maybe<uint64_t> mBlobSerial;
PrincipalOriginAttributes mOriginAttributes;
void* mControlledDocument;
uint32_t mHash;
bool mIsChrome;
};
} // namespace image
} // namespace mozilla
#endif // mozilla_image_src_ImageCacheKey_h
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