/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* Interface to the Service for gwetting the Global PrintSettings object
   or a unique PrintSettings object
*/

#include "nsISupports.idl"

interface nsIPrintSettings;

%{ C++
namespace mozilla {
namespace embedding {
  class PrintData;
}
}
%}

/**
 * Native types
 */
[ref] native PrintDataRef(const mozilla::embedding::PrintData);
[ptr] native PrintDataPtr(mozilla::embedding::PrintData);

[scriptable, uuid(841387C8-72E6-484b-9296-BF6EEA80D58A)]
interface nsIPrintSettingsService : nsISupports
{
  /**
   * Returns the default print settings as used for printing.
   */
  [noscript] readonly attribute nsIPrintSettings defaultPrintSettingsForPrinting;

  /**
   * Creates a new nsIPrintSettings object.
   *
   * Initializes the settings object from the unprefixed printer
   * (Note: this may not happen if there is an OS specific implementation.)
   */
  nsIPrintSettings createNewPrintSettings();

  /**
   * The name of the last printer used. Note that this may not be set, or may
   * no longer be a valid printer. The caller is responsible for checking and
   * falling back to some other printer (such as the system default printer).
   *
   * XXX: make it [infallible] when AString supports that (bug 1491187).
   */
  readonly attribute AString lastUsedPrinterName;

  /**
   * Initializes certain settings from the native printer into the PrintSettings
   * if aPrinterName is null then it uses the default printer name if it can
   * These settings include, but are not limited to:
   *   Page Orientation
   *   Page Size
   *   Number of Copies
   */
  void initPrintSettingsFromPrinter(in AString aPrinterName,
                                    in nsIPrintSettings aPrintSettings);

  /**
   * Reads PrintSettings values from Prefs,
   * the values to be read are indicated by the "flags" arg.
   *
   * aPrintSettings should be initialized with the name of a printer. First
   * it reads in the PrintSettings from the last print job. Then it uses the
   * PrinterName in the PrinterSettings to read any settings that were saved
   * just for that printer.
   *
   * aPS - PrintSettings to have its settings read
   * aUsePrinterNamePrefix - indicates whether to use the printer name as a prefix
   * aFlags - indicates which prefs to read, see nsIPrintSettings.idl for the
   *          const values.
   *
   * Items not read:
   *   startPageRange, endPageRange, scaling, printRange, title
   *   docURL, isCancelled,
   *   printSilent, shrinkToFit, numCopies,
   *   printerName
   *
   */
  void initPrintSettingsFromPrefs(in nsIPrintSettings aPrintSettings, in boolean aUsePrinterNamePrefix, in unsigned long aFlags);

  /**
   * As long as the pref print.save_print_settings isn't set to false, this
   * saves to prefs the settings from aPrintSettings that are indicated by
   * aFlags.
   *
   * If there is no PrinterName in the PrinterSettings
   * the values are saved as the "generic" values not associated with any printer.
   * If a PrinterName is there, then it saves the items qualified for that Printer
   *
   * aPS - PrintSettings to have its settings saved
   * aFlags - indicates which prefs to save, see nsIPrintSettings.idl for the const values.
   *
   * Items not written:
   *   startPageRange, endPageRange, scaling, printRange, title
   *   docURL, isCancelled,
   *   printSilent, shrinkToFit, numCopies
   *
   */
  void maybeSavePrintSettingsToPrefs(in nsIPrintSettings aPrintSettings, in unsigned long aFlags);

  /**
   * As long as the pref print.save_print_settings isn't set to false, this
   * saves the given printer name as the last used printer name.
   */
  void maybeSaveLastUsedPrinterNameToPrefs(in AString aPrinterName);

  /**
   * Given some nsIPrintSettings,
   * populates a PrintData representing them which can be sent over IPC. Values
   * are only ever read from aSettings and aWBP.
   *
   * @param aSettings
   *        An nsIPrintSettings for a print job.
   * @param data
   *        Pointer to a pre-existing PrintData to populate.
   *
   * @return nsresult
   */
  [noscript]
  void SerializeToPrintData(in nsIPrintSettings aPrintSettings,
                            in PrintDataPtr data);

  /**
   * This function is the opposite of SerializeToPrintData, in that it takes
   * a PrintData, and populates a pre-existing nsIPrintSettings with the data
   * from PrintData.
   *
   * @param PrintData
   *        Printing information sent through IPC.
   * @param settings
   *        A pre-existing nsIPrintSettings to populate with the PrintData.
   *
   * @return nsresult
   */
  [noscript]
  void DeserializeToPrintSettings(in PrintDataRef data,
                                  in nsIPrintSettings aPrintSettings);

};