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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 CHROME_BROWSER_ASH_PRINTING_SERVER_PRINTERS_FETCHER_H_
#define CHROME_BROWSER_ASH_PRINTING_SERVER_PRINTERS_FETCHER_H_
#include <memory>
#include <vector>
#include "base/functional/callback.h"
#include "chrome/browser/ash/printing/printer_detector.h"
class GURL;
class Profile;
namespace ash {
enum PrintServerQueryResult {
kNoErrors = 0,
kIncorrectUrl,
kConnectionError,
kHttpError,
kCannotParseIppResponse
};
// Instances of this class are used to query list of available printers from
// given print server. The constructor posts to an internal task runner
// a procedure responsible for building and sending the query request. When the
// response is obtained and parsed, the callback passed as a constructor's
// parameter is posted on the same sequence that constructor was called from.
// The object can be safely destroyed during query execution and on any
// sequence/thread.
class ServerPrintersFetcher {
public:
// The callback: |sender| is a pointer to the object calling the callback,
// |printers| is a list of queried printers.
using OnPrintersFetchedCallback = base::RepeatingCallback<void(
const ServerPrintersFetcher* sender,
const GURL& server_url,
std::vector<PrinterDetector::DetectedPrinter>&& printers)>;
ServerPrintersFetcher(Profile* profile,
const GURL& server_url,
const std::string& server_name,
OnPrintersFetchedCallback cb);
ServerPrintersFetcher(const ServerPrintersFetcher&) = delete;
ServerPrintersFetcher& operator=(const ServerPrintersFetcher&) = delete;
virtual ~ServerPrintersFetcher();
PrintServerQueryResult GetLastError() const;
private:
// Forward declaration of a type of an internal object.
class PrivateImplementation;
// Deleter of the internal object (called when unique_ptr is deleted).
struct PimDeleter {
void operator()(PrivateImplementation* pim) const;
};
// Internal object.
std::unique_ptr<PrivateImplementation, PimDeleter> pim_;
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_PRINTING_SERVER_PRINTERS_FETCHER_H_
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