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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_IMAGE_FETCHER_IMAGE_FETCHER_H_
#define COMPONENTS_IMAGE_FETCHER_IMAGE_FETCHER_H_
#include <string>
#include "base/callback.h"
#include "base/macros.h"
#include "components/data_use_measurement/core/data_use_user_data.h"
#include "components/image_fetcher/image_fetcher_delegate.h"
#include "url/gurl.h"
namespace gfx {
class Image;
}
namespace image_fetcher {
// A class used to fetch server images. It can be called from any thread and the
// callback will be called on the thread which initiated the fetch.
class ImageFetcher {
public:
ImageFetcher() {}
virtual ~ImageFetcher() {}
using DataUseServiceName = data_use_measurement::DataUseUserData::ServiceName;
virtual void SetImageFetcherDelegate(ImageFetcherDelegate* delegate) = 0;
// Sets a service name against which to track data usage.
virtual void SetDataUseServiceName(
DataUseServiceName data_use_service_name) = 0;
// An empty gfx::Image will be returned to the callback in case the image
// could not be fetched.
virtual void StartOrQueueNetworkRequest(
const std::string& id,
const GURL& image_url,
base::Callback<void(const std::string&, const gfx::Image&)> callback) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(ImageFetcher);
};
} // namespace image_fetcher
#endif // COMPONENTS_IMAGE_FETCHER_IMAGE_FETCHER_H_
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