chrome/browser/resources/print_preview/settings/dpi_settings.js

// Copyright 2014 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.

cr.define('print_preview', function() {
  'use strict';

  /**
   * Encapsulates all settings and logic related to the DPI selection UI.
   * @param {!print_preview.ticket_items.Dpi} ticketItem Used to read and write
   *     the DPI ticket item.
   * @constructor
   * @extends {print_preview.SettingsSectionSelect}
   */
  function DpiSettings(ticketItem) {
    print_preview.SettingsSectionSelect.call(this, ticketItem);
  };

  DpiSettings.prototype = {
    __proto__: print_preview.SettingsSectionSelect.prototype,

    /** @override */
    getDefaultDisplayName_: function(option) {
      var hDpi = option.horizontal_dpi || 0;
      var vDpi = option.vertical_dpi || 0;
      if (hDpi > 0 && vDpi > 0 && hDpi != vDpi)
        return loadTimeData.getStringF('nonIsotropicDpiItemLabel', hDpi, vDpi);
      return loadTimeData.getStringF('dpiItemLabel', hDpi || vDpi);
    }
  };

  // Export
  return {
    DpiSettings: DpiSettings
  };
});