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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_IMAGE_FETCHER_CORE_REDUCED_MODE_IMAGE_FETCHER_H_
#define COMPONENTS_IMAGE_FETCHER_CORE_REDUCED_MODE_IMAGE_FETCHER_H_
#include "base/memory/raw_ptr.h"
#include "base/sequence_checker.h"
#include "components/image_fetcher/core/image_fetcher.h"
#include "url/gurl.h"
namespace image_fetcher {
class ImageFetcher;
// ReducedModeImageFetcher is used when Chrome is running in reduced mode. This
// image fetcher defers image decoding during fetching, since decoding in the
// utility process isn't available in the reduced mode. It ignores the
// ImageFetcherCallback, but will return the fetched but not-transcoding image
// to users by calling ImageDataFetcherCallback.
class ReducedModeImageFetcher : public ImageFetcher {
public:
ReducedModeImageFetcher(ImageFetcher* image_fetcher);
ReducedModeImageFetcher(const ReducedModeImageFetcher&) = delete;
ReducedModeImageFetcher& operator=(const ReducedModeImageFetcher&) = delete;
~ReducedModeImageFetcher() override;
// ImageFetcher:
void FetchImageAndData(const GURL& image_url,
ImageDataFetcherCallback image_data_callback,
ImageFetcherCallback image_callback,
ImageFetcherParams params) override;
ImageDecoder* GetImageDecoder() override;
private:
// Owned by ImageFetcherService.
raw_ptr<ImageFetcher> image_fetcher_;
// Used to ensure that operations are performed on the sequence that this
// object was created on.
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace image_fetcher
#endif // COMPONENTS_IMAGE_FETCHER_CORE_REDUCED_MODE_IMAGE_FETCHER_H_
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