printing_context_chromeos.h

// Copyright 2016 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 PRINTING_PRINTING_CONTEXT_CHROMEOS_H_
#define PRINTING_PRINTING_CONTEXT_CHROMEOS_H_

#include <memory>
#include <string>
#include <vector>

#include "base/macros.h"
#include "printing/backend/cups_connection.h"
#include "printing/backend/cups_printer.h"
#include "printing/printing_context.h"

namespace printing {

class PRINTING_EXPORT PrintingContextChromeos : public PrintingContext {
 public:
  explicit PrintingContextChromeos(Delegate* delegate);
  ~PrintingContextChromeos() override;

  // PrintingContext implementation.
  void AskUserForSettings(int max_pages,
                          bool has_selection,
                          bool is_scripted,
                          PrintSettingsCallback callback) override;
  Result UseDefaultSettings() override;
  gfx::Size GetPdfPaperSizeDeviceUnits() override;
  Result UpdatePrinterSettings(bool external_preview,
                               bool show_system_dialog,
                               int page_count) override;
  Result NewDocument(const base::string16& document_name) override;
  Result NewPage() override;
  Result PageDone() override;
  Result DocumentDone() override;
  void Cancel() override;
  void ReleaseContext() override;
  printing::NativeDrawingContext context() const override;

  Result StreamData(const std::vector<char>& buffer);

 private:
  // Lazily initializes |printer_|.
  Result InitializeDevice(const std::string& device);

  CupsConnection connection_;
  std::unique_ptr<CupsPrinter> printer_;

  DISALLOW_COPY_AND_ASSIGN(PrintingContextChromeos);
};

}  // namespace printing

#endif  // PRINTING_PRINTING_CONTEXT_CHROMEOS_H_