/* Any copyright is dedicated to the Public Domain.
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

// Tests various aspects of the details view

var gManagerWindow;
var gCategoryUtilities;
var gProvider;

const SETTINGS_ROWS = 8;

var observer = {
  lastData: null,
  observe: function(aSubject, aTopic, aData) {
    if (aTopic == "addon-options-displayed")
      this.lastData = aData;
  }
};

function installAddon(aCallback) {
  AddonManager.getInstallForURL(TESTROOT + "addons/browser_inlinesettings1.xpi",
                                function(aInstall) {
    aInstall.addListener({
      onInstallEnded: function() {
        executeSoon(aCallback);
      }
    });
    aInstall.install();
  }, "application/x-xpinstall");
}

function test() {
  waitForExplicitFinish();

  gProvider = new MockProvider();

  gProvider.createAddons([{
    id: "inlinesettings2@tests.mozilla.org",
    name: "Inline Settings (Regular)",
    version: "1",
    optionsURL: CHROMEROOT + "options.xul",
    optionsType: AddonManager.OPTIONS_TYPE_INLINE
  },{
    id: "inlinesettings3@tests.mozilla.org",
    name: "Inline Settings (More Options)",
    description: "Tests for option types introduced after Mozilla 7.0",
    version: "1",
    optionsURL: CHROMEROOT + "more_options.xul",
    optionsType: AddonManager.OPTIONS_TYPE_INLINE
  },{
    id: "noninlinesettings@tests.mozilla.org",
    name: "Non-Inline Settings",
    version: "1",
    optionsURL: CHROMEROOT + "addon_prefs.xul"
  }]);

  installAddon(function () {
    open_manager("addons://list/extension", function(aWindow) {
      gManagerWindow = aWindow;
      gCategoryUtilities = new CategoryUtilities(gManagerWindow);

      Services.obs.addObserver(observer, "addon-options-displayed", false);

      run_next_test();
    });
  });
}

function end_test() {
  Services.obs.removeObserver(observer, "addon-options-displayed");

  Services.prefs.clearUserPref("extensions.inlinesettings1.bool");
  Services.prefs.clearUserPref("extensions.inlinesettings1.boolint");
  Services.prefs.clearUserPref("extensions.inlinesettings1.integer");
  Services.prefs.clearUserPref("extensions.inlinesettings1.string");
  Services.prefs.clearUserPref("extensions.inlinesettings1.color");
  Services.prefs.clearUserPref("extensions.inlinesettings1.file");
  Services.prefs.clearUserPref("extensions.inlinesettings1.directory");
  Services.prefs.clearUserPref("extensions.inlinesettings3.radioBool");
  Services.prefs.clearUserPref("extensions.inlinesettings3.radioInt");
  Services.prefs.clearUserPref("extensions.inlinesettings3.radioString");
  Services.prefs.clearUserPref("extensions.inlinesettings3.menulist");

  close_manager(gManagerWindow, function() {
    AddonManager.getAddonByID("inlinesettings1@tests.mozilla.org", function(aAddon) {
      aAddon.uninstall();
      finish();
    });
  });
}

// Addon with options.xul
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "inlinesettings1@tests.mozilla.org");
  is(addon.mAddon.optionsType, AddonManager.OPTIONS_TYPE_INLINE, "Options should be inline type");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
  is_element_visible(button, "Preferences button should be visible");

  run_next_test();
});

// Addon with inline preferences as optionsURL
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "inlinesettings2@tests.mozilla.org");
  is(addon.mAddon.optionsType, AddonManager.OPTIONS_TYPE_INLINE, "Options should be inline type");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
  is_element_visible(button, "Preferences button should be visible");

  run_next_test();
});

// Addon with non-inline preferences as optionsURL
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "noninlinesettings@tests.mozilla.org");
  is(addon.mAddon.optionsType, AddonManager.OPTIONS_TYPE_DIALOG, "Options should be dialog type");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
  is_element_visible(button, "Preferences button should be visible");

  run_next_test();
});

// Addon with options.xul, also a test for the setting.xml bindings
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "inlinesettings1@tests.mozilla.org");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
  EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

  wait_for_view_load(gManagerWindow, function() {
    is(observer.lastData, "inlinesettings1@tests.mozilla.org", "Observer notification should have fired");

    var grid = gManagerWindow.document.getElementById("detail-grid");
    var settings = grid.querySelectorAll("rows > setting");
    is(settings.length, SETTINGS_ROWS, "Grid should have settings children");

    // Force bindings to apply
    settings[0].clientTop;

    ok(settings[0].hasAttribute("first-row"), "First visible row should have first-row attribute");
    Services.prefs.setBoolPref("extensions.inlinesettings1.bool", false);
    var input = gManagerWindow.document.getAnonymousElementByAttribute(settings[0], "anonid", "input");
    isnot(input.checked, true, "Checkbox should have initial value");
    EventUtils.synthesizeMouseAtCenter(input, { clickCount: 1 }, gManagerWindow);
    is(input.checked, true, "Checkbox should have updated value");
    is(Services.prefs.getBoolPref("extensions.inlinesettings1.bool"), true, "Bool pref should have been updated");
    EventUtils.synthesizeMouseAtCenter(input, { clickCount: 1 }, gManagerWindow);
    isnot(input.checked, true, "Checkbox should have updated value");
    is(Services.prefs.getBoolPref("extensions.inlinesettings1.bool"), false, "Bool pref should have been updated");

    ok(!settings[1].hasAttribute("first-row"), "Not the first row");
    Services.prefs.setIntPref("extensions.inlinesettings1.boolint", 0);
    var input = gManagerWindow.document.getAnonymousElementByAttribute(settings[1], "anonid", "input");
    isnot(input.checked, true, "Checkbox should have initial value");
    EventUtils.synthesizeMouseAtCenter(input, { clickCount: 1 }, gManagerWindow);
    is(input.checked, true, "Checkbox should have updated value");
    is(Services.prefs.getIntPref("extensions.inlinesettings1.boolint"), 1, "BoolInt pref should have been updated");
    EventUtils.synthesizeMouseAtCenter(input, { clickCount: 1 }, gManagerWindow);
    isnot(input.checked, true, "Checkbox should have updated value");
    is(Services.prefs.getIntPref("extensions.inlinesettings1.boolint"), 2, "BoolInt pref should have been updated");

    ok(!settings[2].hasAttribute("first-row"), "Not the first row");
    Services.prefs.setIntPref("extensions.inlinesettings1.integer", 0);
    var input = gManagerWindow.document.getAnonymousElementByAttribute(settings[2], "anonid", "input");
    is(input.value, "0", "Number box should have initial value");
    input.select();
    EventUtils.synthesizeKey("1", {}, gManagerWindow);
    EventUtils.synthesizeKey("3", {}, gManagerWindow);
    is(input.value, "13", "Number box should have updated value");
    is(Services.prefs.getIntPref("extensions.inlinesettings1.integer"), 13, "Integer pref should have been updated");
    EventUtils.synthesizeKey("VK_DOWN", {}, gManagerWindow);
    is(input.value, "12", "Number box should have updated value");
    is(Services.prefs.getIntPref("extensions.inlinesettings1.integer"), 12, "Integer pref should have been updated");

    ok(!settings[3].hasAttribute("first-row"), "Not the first row");
    Services.prefs.setCharPref("extensions.inlinesettings1.string", "foo");
    var input = gManagerWindow.document.getAnonymousElementByAttribute(settings[3], "anonid", "input");
    is(input.value, "foo", "Text box should have initial value");
    input.select();
    EventUtils.synthesizeKey("b", {}, gManagerWindow);
    EventUtils.synthesizeKey("a", {}, gManagerWindow);
    EventUtils.synthesizeKey("r", {}, gManagerWindow);
    is(input.value, "bar", "Text box should have updated value");
    is(Services.prefs.getCharPref("extensions.inlinesettings1.string"), "bar", "String pref should have been updated");

    ok(!settings[4].hasAttribute("first-row"), "Not the first row");
    var input = settings[4].firstElementChild;
    is(input.value, "1", "Menulist should have initial value");
    input.focus();
    EventUtils.synthesizeKey("b", {}, gManagerWindow);
    is(input.value, "2", "Menulist should have updated value");
    is(gManagerWindow._testValue, "2", "Menulist oncommand handler should've updated the test value");
    delete gManagerWindow._testValue;

    ok(!settings[5].hasAttribute("first-row"), "Not the first row");
    Services.prefs.setCharPref("extensions.inlinesettings1.color", "#FF0000");
    input = gManagerWindow.document.getAnonymousElementByAttribute(settings[5], "anonid", "input");
    is(input.color, "#FF0000", "Color picker should have initial value");
    input.focus();
    EventUtils.synthesizeKey("VK_RIGHT", {}, gManagerWindow);
    EventUtils.synthesizeKey("VK_RIGHT", {}, gManagerWindow);
    EventUtils.synthesizeKey("VK_RETURN", {}, gManagerWindow);
    input.hidePopup();
    is(input.color, "#FF9900", "Color picker should have updated value");
    is(Services.prefs.getCharPref("extensions.inlinesettings1.color"), "#FF9900", "Color pref should have been updated");

    try {
      mockFilePickerFactory.register();

      ok(!settings[6].hasAttribute("first-row"), "Not the first row");
      var button = gManagerWindow.document.getAnonymousElementByAttribute(settings[6], "anonid", "button");
      input = gManagerWindow.document.getAnonymousElementByAttribute(settings[6], "anonid", "input");
      is(input.value, "", "Label value should be empty");

      var profD = Services.dirsvc.get("ProfD", Ci.nsIFile);
      var curProcD = Services.dirsvc.get("CurProcD", Ci.nsIFile);

      _returnFile = profD;
      _returnValue = Ci.nsIFilePicker.returnOK;
      EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);
      is(_mode, Ci.nsIFilePicker.modeOpen, "File picker mode should be open file");
      is(input.value, profD.path, "Label value should match file chosen");
      is(Services.prefs.getCharPref("extensions.inlinesettings1.file"), profD.path, "File pref should match file chosen");

      _returnFile = curProcD;
      _returnValue = Ci.nsIFilePicker.returnCancel;
      EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);
      is(_mode, Ci.nsIFilePicker.modeOpen, "File picker mode should be open file");
      is(input.value, profD.path, "Label value should not have changed");
      is(Services.prefs.getCharPref("extensions.inlinesettings1.file"), profD.path, "File pref should not have changed");

      ok(!settings[7].hasAttribute("first-row"), "Not the first row");
      button = gManagerWindow.document.getAnonymousElementByAttribute(settings[7], "anonid", "button");
      input = gManagerWindow.document.getAnonymousElementByAttribute(settings[7], "anonid", "input");
      is(input.value, "", "Label value should be empty");

      _returnFile = profD;
      _returnValue = Ci.nsIFilePicker.returnOK;
      EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);
      is(_mode, Ci.nsIFilePicker.modeGetFolder, "File picker mode should be directory");
      is(input.value, profD.path, "Label value should match file chosen");
      is(Services.prefs.getCharPref("extensions.inlinesettings1.directory"), profD.path, "Directory pref should match file chosen");

      _returnFile = curProcD;
      _returnValue = Ci.nsIFilePicker.returnCancel;
      EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);
      is(_mode, Ci.nsIFilePicker.modeGetFolder, "File picker mode should be directory");
      is(input.value, profD.path, "Label value should not have changed");
      is(Services.prefs.getCharPref("extensions.inlinesettings1.directory"), profD.path, "Directory pref should not have changed");

    } finally {
      mockFilePickerFactory.unregister();

      button = gManagerWindow.document.getElementById("detail-prefs-btn");
      is_element_hidden(button, "Preferences button should not be visible");

      gCategoryUtilities.openType("extension", run_next_test);
    }
  });
});

// Tests for the setting.xml bindings introduced after Mozilla 7
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "inlinesettings3@tests.mozilla.org");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
  EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

  wait_for_view_load(gManagerWindow, function() {
    is(observer.lastData, "inlinesettings3@tests.mozilla.org", "Observer notification should have fired");

    var grid = gManagerWindow.document.getElementById("detail-grid");
    var settings = grid.querySelectorAll("rows > setting");
    is(settings.length, 4, "Grid should have settings children");

    // Force bindings to apply
    settings[0].clientTop;

    ok(settings[0].hasAttribute("first-row"), "First visible row should have first-row attribute");
    Services.prefs.setBoolPref("extensions.inlinesettings3.radioBool", false);
    var radios = settings[0].getElementsByTagName("radio");
    isnot(radios[0].selected, true, "Correct radio button should be selected");
    is(radios[1].selected, true, "Correct radio button should be selected");
    EventUtils.synthesizeMouseAtCenter(radios[0], { clickCount: 1 }, gManagerWindow);
    is(Services.prefs.getBoolPref("extensions.inlinesettings3.radioBool"), true, "Radio pref should have been updated");
    EventUtils.synthesizeMouseAtCenter(radios[1], { clickCount: 1 }, gManagerWindow);
    is(Services.prefs.getBoolPref("extensions.inlinesettings3.radioBool"), false, "Radio pref should have been updated");

    ok(!settings[1].hasAttribute("first-row"), "Not the first row");
    Services.prefs.setIntPref("extensions.inlinesettings3.radioInt", 5);
    var radios = settings[1].getElementsByTagName("radio");
    isnot(radios[0].selected, true, "Correct radio button should be selected");
    is(radios[1].selected, true, "Correct radio button should be selected");
    isnot(radios[2].selected, true, "Correct radio button should be selected");
    EventUtils.synthesizeMouseAtCenter(radios[0], { clickCount: 1 }, gManagerWindow);
    is(Services.prefs.getIntPref("extensions.inlinesettings3.radioInt"), 4, "Radio pref should have been updated");
    EventUtils.synthesizeMouseAtCenter(radios[2], { clickCount: 1 }, gManagerWindow);
    is(Services.prefs.getIntPref("extensions.inlinesettings3.radioInt"), 6, "Radio pref should have been updated");

    ok(!settings[2].hasAttribute("first-row"), "Not the first row");
    Services.prefs.setCharPref("extensions.inlinesettings3.radioString", "juliet");
    var radios = settings[2].getElementsByTagName("radio");
    isnot(radios[0].selected, true, "Correct radio button should be selected");
    is(radios[1].selected, true, "Correct radio button should be selected");
    isnot(radios[2].selected, true, "Correct radio button should be selected");
    EventUtils.synthesizeMouseAtCenter(radios[0], { clickCount: 1 }, gManagerWindow);
    is(Services.prefs.getCharPref("extensions.inlinesettings3.radioString"), "india", "Radio pref should have been updated");
    EventUtils.synthesizeMouseAtCenter(radios[2], { clickCount: 1 }, gManagerWindow);
    is(Services.prefs.getCharPref("extensions.inlinesettings3.radioString"), "kilo", "Radio pref should have been updated");

    ok(!settings[3].hasAttribute("first-row"), "Not the first row");
    Services.prefs.setIntPref("extensions.inlinesettings3.menulist", 8);
    var input = settings[3].firstElementChild;
    is(input.value, "8", "Menulist should have initial value");
    input.focus();
    EventUtils.synthesizeKey("n", {}, gManagerWindow);
    is(input.value, "9", "Menulist should have updated value");
    is(Services.prefs.getIntPref("extensions.inlinesettings3.menulist"), 9, "Menulist pref should have been updated");

    button = gManagerWindow.document.getElementById("detail-prefs-btn");
    is_element_hidden(button, "Preferences button should not be visible");

    gCategoryUtilities.openType("extension", run_next_test);
  });
});

// Addon with inline preferences as optionsURL
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "inlinesettings2@tests.mozilla.org");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
  EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

  wait_for_view_load(gManagerWindow, function() {
    is(observer.lastData, "inlinesettings2@tests.mozilla.org", "Observer notification should have fired");

    var grid = gManagerWindow.document.getElementById("detail-grid");
    var settings = grid.querySelectorAll("rows > setting");
    is(settings.length, 5, "Grid should have settings children");

    // Force bindings to apply
    settings[0].clientTop;

    var node = settings[0];
    node = settings[0];
    is_element_hidden(node, "Unsupported settings should not be visible");
    ok(!node.hasAttribute("first-row"), "Hidden row is not the first row");

    node = settings[1];
    is(node.nodeName, "setting", "Should be a setting node");
    ok(node.hasAttribute("first-row"), "First visible row should have first-row attribute");
    var description = gManagerWindow.document.getAnonymousElementByAttribute(node, "class", "preferences-description");
    is(description.textContent.trim(), "", "Description node should be empty");

    node = node.nextSibling;
    is(node.nodeName, "row", "Setting should be followed by a row node");
    is_element_visible(node, "Description should be visible");
    is(node.textContent, "Description Attribute", "Description should be in this row");

    node = settings[2];
    is(node.nodeName, "setting", "Should be a setting node");
    ok(!node.hasAttribute("first-row"), "Not the first row");
    description = gManagerWindow.document.getAnonymousElementByAttribute(node, "class", "preferences-description");
    is(description.textContent.trim(), "", "Description node should be empty");

    node = node.nextSibling;
    is(node.nodeName, "row", "Setting should be followed by a row node");
    is_element_visible(node, "Description should be visible");
    is(node.textContent, "Description Text Node", "Description should be in this row");

    node = settings[3];
    is(node.nodeName, "setting", "Should be a setting node");
    ok(!node.hasAttribute("first-row"), "Not the first row");
    description = gManagerWindow.document.getAnonymousElementByAttribute(node, "class", "preferences-description");
    is(description.textContent.trim(), "", "Description node should be empty");
    var button = node.firstElementChild;
    isnot(button, null, "There should be a button");

    node = node.nextSibling;
    is(node.nodeName, "row", "Setting should be followed by a row node");
    is_element_visible(node, "Description should be visible");
    is(node.textContent.trim(), "This is a test, all this text should be visible", "Description should be in this row");

    node = settings[4];
    is_element_hidden(node, "Unsupported settings should not be visible");
    ok(!node.hasAttribute("first-row"), "Hidden row is not the first row");

    node = node.nextSibling;
    is(node.nodeName, "row", "Setting should be followed by a row node");
    is_element_hidden(node, "Descriptions of unsupported settings should not be visible");
    
    var button = gManagerWindow.document.getElementById("detail-prefs-btn");
    is_element_hidden(button, "Preferences button should not be visible");

    gCategoryUtilities.openType("extension", run_next_test);
  });
});

// Addon with non-inline preferences as optionsURL
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "noninlinesettings@tests.mozilla.org");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "details-btn");
  EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

  wait_for_view_load(gManagerWindow, function() {
    is(observer.lastData, "inlinesettings2@tests.mozilla.org", "Observer notification should not have fired");

    var grid = gManagerWindow.document.getElementById("detail-grid");
    var settings = grid.querySelectorAll("rows > setting");
    is(settings.length, 0, "Grid should not have settings children");

    var button = gManagerWindow.document.getElementById("detail-prefs-btn");
    is_element_visible(button, "Preferences button should be visible");

    gCategoryUtilities.openType("extension", run_next_test);
  });
});

// Addon with options.xul, disabling and enabling should hide and show settings UI
add_test(function() {
  var addon = get_addon_element(gManagerWindow, "inlinesettings1@tests.mozilla.org");
  addon.parentNode.ensureElementIsVisible(addon);

  var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
  EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

  wait_for_view_load(gManagerWindow, function() {
    var grid = gManagerWindow.document.getElementById("detail-grid");
    var settings = grid.querySelectorAll("rows > setting");
    is(settings.length, SETTINGS_ROWS, "Grid should have settings children");

    // disable
    var button = gManagerWindow.document.getElementById("detail-disable-btn");
    button.focus(); // make sure it's in view
    EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

    settings = grid.querySelectorAll("rows > setting");
    is(settings.length, 0, "Grid should not have settings children");

    gCategoryUtilities.openType("extension", function() {
      var addon = get_addon_element(gManagerWindow, "inlinesettings1@tests.mozilla.org");
      addon.parentNode.ensureElementIsVisible(addon);

      var button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "preferences-btn");
      is_element_hidden(button, "Preferences button should not be visible");

      button = gManagerWindow.document.getAnonymousElementByAttribute(addon, "anonid", "details-btn");
      EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

      wait_for_view_load(gManagerWindow, function() {
        var grid = gManagerWindow.document.getElementById("detail-grid");
        var settings = grid.querySelectorAll("rows > setting");
        is(settings.length, 0, "Grid should not have settings children");

        // enable
        var button = gManagerWindow.document.getElementById("detail-enable-btn");
        EventUtils.synthesizeMouseAtCenter(button, { clickCount: 1 }, gManagerWindow);

        settings = grid.querySelectorAll("rows > setting");
        is(settings.length, SETTINGS_ROWS, "Grid should have settings children");

        gCategoryUtilities.openType("extension", run_next_test);
      });
    });
  });
});

var _returnFile, _returnValue, _mode;

function MockFilePicker() { };
MockFilePicker.prototype = {
  QueryInterface: XPCOMUtils.generateQI([Ci.nsIFilePicker]),
  init: function(aParent, aTitle, aMode) {
    _mode = aMode;
  },
  appendFilters: function(aFilterMask) { },
  appendFilter: function(aTitle, aFilter) { },
  defaultString: "",
  defaultExtension: "",
  filterIndex: 0,
  displayDirectory: null,
  get file() {
    return _returnFile;
  },
  get fileURL() {
    throw Cr.NS_ERROR_NOT_IMPLEMENTED;
  },
  get files() {
    throw Cr.NS_ERROR_NOT_IMPLEMENTED;
  },
  show: function() {
    return _returnValue;
  }
};
var mockFilePickerFactory = {
  registrar: Components.manager.QueryInterface(Ci.nsIComponentRegistrar),
  contractID: "@mozilla.org/filepicker;1",
  classID: Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator).generateUUID(),

  register: function() {
    this.registrar.registerFactory(this.classID, "", this.contractID, this);
  },

  unregister: function() {
    this.registrar.unregisterFactory(this.classID, this);
  },

  // nsIFactory
  createInstance: function(aOuter, aIID) {
    if (aOuter) {
      throw Components.results.NS_ERROR_NO_AGGREGATION;
    }
    return new MockFilePicker().QueryInterface(aIID);
  },

  lockFactory: function(aLock) {
    throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
  },

  QueryInterface: XPCOMUtils.generateQI([
    Ci.nsIFactory
  ])
};
