widget/gtk/nsPrintSettingsServiceGTK.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsPrintSettingsServiceGTK.h"
   7
   8 #include "mozilla/embedding/PPrintingTypes.h"
   9 #include "nsPrintSettingsGTK.h"
  10
  11 using namespace mozilla::embedding;
  12
  13 static void serialize_gtk_printsettings_to_printdata(const gchar* key,
  14                                                      const gchar* value,
  15                                                      gpointer aData) {
  16   PrintData* data = (PrintData*)aData;
  17   CStringKeyValue pair;
  18   pair.key() = key;
  19   pair.value() = value;
  20   data->GTKPrintSettings().AppendElement(pair);
  21 }
  22
  23 NS_IMETHODIMP
  24 nsPrintSettingsServiceGTK::SerializeToPrintData(nsIPrintSettings* aSettings,
  25                                                 PrintData* data) {
  26   nsresult rv = nsPrintSettingsService::SerializeToPrintData(aSettings, data);
  27   NS_ENSURE_SUCCESS(rv, rv);
  28
  29   nsCOMPtr<nsPrintSettingsGTK> settingsGTK(do_QueryInterface(aSettings));
  30   NS_ENSURE_STATE(settingsGTK);
  31
  32   GtkPrintSettings* gtkPrintSettings = settingsGTK->GetGtkPrintSettings();
  33   NS_ENSURE_STATE(gtkPrintSettings);
  34
  35   gtk_print_settings_foreach(gtkPrintSettings,
  36                              serialize_gtk_printsettings_to_printdata, data);
  37
  38   return NS_OK;
  39 }
  40
  41 NS_IMETHODIMP
  42 nsPrintSettingsServiceGTK::DeserializeToPrintSettings(
  43     const PrintData& data, nsIPrintSettings* settings) {
  44   nsCOMPtr<nsPrintSettingsGTK> settingsGTK(do_QueryInterface(settings));
  45   NS_ENSURE_STATE(settingsGTK);
  46
  47   nsresult rv =
  48       nsPrintSettingsService::DeserializeToPrintSettings(data, settings);
  49   NS_ENSURE_SUCCESS(rv, rv);
  50
  51   // Instead of re-using the GtkPrintSettings that nsIPrintSettings is
  52   // wrapping, we'll create a new one to deserialize to and replace it
  53   // within nsIPrintSettings.
  54   GtkPrintSettings* newGtkPrintSettings = gtk_print_settings_new();
  55
  56   for (uint32_t i = 0; i < data.GTKPrintSettings().Length(); ++i) {
  57     CStringKeyValue pair = data.GTKPrintSettings()[i];
  58     gtk_print_settings_set(newGtkPrintSettings, pair.key().get(),
  59                            pair.value().get());
  60   }
  61
  62   settingsGTK->SetGtkPrintSettings(newGtkPrintSettings);
  63
  64   // nsPrintSettingsGTK is holding a reference to newGtkPrintSettings
  65   g_object_unref(newGtkPrintSettings);
  66   newGtkPrintSettings = nullptr;
  67   return NS_OK;
  68 }
  69
  70 nsresult nsPrintSettingsServiceGTK::_CreatePrintSettings(
  71     nsIPrintSettings** _retval) {
  72   *_retval = nullptr;
  73   nsPrintSettingsGTK* printSettings =
  74       new nsPrintSettingsGTK();  // does not initially ref count
  75   NS_ENSURE_TRUE(printSettings, NS_ERROR_OUT_OF_MEMORY);
  76
  77   NS_ADDREF(*_retval = printSettings);  // ref count
  78
  79   return NS_OK;
  80 }