electron/atom/common/fileicon_fetcher.h
2017-02-07 09:48:12 -08:00

48 lines
1.4 KiB
C++

// Copyright (c) 2016 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#ifndef ATOM_COMMON_API_FILEICON_FETCHER_H_
#define ATOM_COMMON_API_FILEICON_FETCHER_H_
#include <string>
#include "base/files/file_path.h"
#include "base/macros.h"
#include "base/task/cancelable_task_tracker.h"
#include "chrome/browser/icon_manager.h"
#include "content/public/browser/url_data_source.h"
namespace gfx {
class Image;
}
class FileIconFetcher {
using IconFetchedCallback = base::Callback<void(gfx::Image&)>;
public:
static void FetchFileIcon(const base::FilePath& path,
float scale_factor,
IconLoader::IconSize icon_size,
const IconFetchedCallback& callback);
private:
struct IconRequestDetails {
IconRequestDetails();
IconRequestDetails(const IconRequestDetails& other);
~IconRequestDetails();
// The callback to run with the response.
IconFetchedCallback callback;
// The requested scale factor to respond with.
float scale_factor;
};
// Called when favicon data is available from the history backend.
static void OnFileIconDataAvailable(const IconRequestDetails& details,
gfx::Image* icon);
// Tracks tasks requesting file icons.
base::CancelableTaskTracker cancelable_task_tracker_;
};
#endif // ATOM_COMMON_API_FILEICON_FETCHER_H_