First try at a user management screen for the desktop

chrome/browser/ui/webui/signin/user_chooser_screen_handler.cc

+// Copyright (c) 2013 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.
+
+#include "chrome/browser/ui/webui/signin/user_chooser_screen_handler.h"
+
+#include "base/bind.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_info_cache.h"
+#include "chrome/browser/profiles/profile_info_util.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/singleton_tabs.h"
+#include "grit/browser_resources.h"
+#include "grit/chromium_strings.h"
+#include "grit/generated_resources.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/gfx/image/image_util.h"
+#include "ui/webui/web_ui_util.h"
+
+namespace {
+// User dictionary keys.
+const char kKeyUsername[] = "username";
+const char kKeyDisplayName[]= "displayName";
+const char kKeyEmailAddress[] = "emailAddress";
+const char kKeyPublicAccount[] = "publicAccount";
+const char kKeyLocallyManagedUser[] = "locallyManagedUser";
+const char kKeySignedIn[] = "signedIn";
+const char kKeyCanRemove[] = "canRemove";
+const char kKeyIsOwner[] = "isOwner";
+const char kKeyIsDesktop[] = "isDesktopScreen";
+const char kKeyAvatarUrl[] = "userImage";
+const char kKeyNeedsSignin[] = "needsSignin";
+const char kGAIAPictureFileNameKey[] = "gaia_picture_file_name";
+
+// Max number of users to show.
+const size_t kMaxUsers = 18;
+
+// Type of the login screen UI that is currently presented to user.
+const char kSourceGaiaSignin[] = "gaia-signin";
+const char kSourceAccountPicker[] = "account-picker";
+
+// JS API callback names.
+const char kJsApiUserChooserInitialize[] = "userChooserInitialize";
+const char kJsApiUserChooserAddUser[] = "addUser";
+const char kJsApiUserChooserLaunchGuest[] = "launchGuest";
+const char kJsApiUserChooserLaunchUser[] = "launchUser";
+const char kJsApiUserChooserRemoveUser[] = "removeUser";
+} // namespace
+
+UserChooserScreenHandler::UserChooserScreenHandler() {
+}
+
+UserChooserScreenHandler::~UserChooserScreenHandler() {
+}
+
+void UserChooserScreenHandler::HandleInitialize(const base::ListValue* args) {
+  SendUserList();
+  web_ui()->CallJavascriptFunction("cr.ui.Oobe.showUserChooserScreen");
+}
+
+void UserChooserScreenHandler::HandleAddUser(const base::ListValue* args) {
+  // TODO(noms): Should redirect to a sign in page.
+  chrome::ShowSingletonTab(chrome::FindBrowserWithWebContents(
+      web_ui()->GetWebContents()),
+      GURL("chrome://settings/createProfile"));
+}
+
+void UserChooserScreenHandler::HandleRemoveUser(const base::ListValue* args) {
+  // TODO(noms): Should delete the user.
+  chrome::ShowSingletonTab(chrome::FindBrowserWithWebContents(
+      web_ui()->GetWebContents()),
+      GURL("chrome://settings/search#Users"));
+}
+
+void UserChooserScreenHandler::HandleLaunchGuest(const base::ListValue* args) {
+  // TODO(noms): Once guest mode is ready, should launch a guest browser.
+  chrome::NewIncognitoWindow(chrome::FindBrowserWithWebContents(
+      web_ui()->GetWebContents()));
+}
+
+void UserChooserScreenHandler::HandleLaunchUser(const base::ListValue* args) {
+  string16 emailAddress;
+  string16 displayName;
+
+  if (!args->GetString(0, &emailAddress) ||
+      !args->GetString(1, &displayName)) {
+    NOTREACHED();
+    return;
+  }
+
+  ProfileInfoCache& info_cache =
+      g_browser_process->profile_manager()->GetProfileInfoCache();
+  chrome::HostDesktopType desktop_type = chrome::GetActiveDesktop();
+
+  for (size_t i = 0; i < info_cache.GetNumberOfProfiles(); ++i) {
+    if (info_cache.GetUserNameOfProfileAtIndex(i) == emailAddress &&
+        info_cache.GetNameOfProfileAtIndex(i) == displayName) {

[Nikita (slow), 2013/06/11 18:43:28]

Why you have to check both email and displayName?
Email seems to be enough to identify user. Or is it for cases when email is
empty and only displayName could be used to identify such user?

[noms (inactive), 2013/06/11 19:39:41]

On the desktop you can have local profiles that aren't signed in, so they aren't
tied to an email address (which is empty in that case). On the other hand,
display name alone might not be unique.
On 2013/06/11 18:43:28, Nikita Kostylev wrote:

[Nikita (slow), 2013/06/13 08:12:38]

I've realized that there's probably no code that prevents you to add 2 different
"Chrome" users with the same email and display name. That's not an issue on
Chrome multi-profiles menu right now as they are identified by index.

Will this be an issue here as you imagine you duplicate users like have
user A: user1@gmail.com, "user A"
...
user B: user1@gmail.com, "user A"

When you select second (user B) user it will select user A in the backend
(here).
Does this make sense?

+      base::FilePath path = info_cache.GetPathOfProfileAtIndex(i);
+      ProfileManager::SwitchToProfile(path, desktop_type, true);
+      break;
+    }
+  }
+}
+
+void UserChooserScreenHandler::RegisterMessages() {
+  web_ui()->RegisterMessageCallback(kJsApiUserChooserInitialize,
+      base::Bind(&UserChooserScreenHandler::HandleInitialize,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(kJsApiUserChooserAddUser,
+      base::Bind(&UserChooserScreenHandler::HandleAddUser,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(kJsApiUserChooserLaunchGuest,
+      base::Bind(&UserChooserScreenHandler::HandleLaunchGuest,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(kJsApiUserChooserLaunchUser,
+      base::Bind(&UserChooserScreenHandler::HandleLaunchUser,
+                 base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(kJsApiUserChooserRemoveUser,
+      base::Bind(&UserChooserScreenHandler::HandleRemoveUser,
+                 base::Unretained(this)));
+}
+
+void UserChooserScreenHandler::GetLocalizedValues(
+    base::DictionaryValue* localized_strings) {
+
+  // For Header Bar.
+  localized_strings->SetString("signedIn",
+      l10n_util::GetStringUTF16(IDS_SCREEN_LOCK_ACTIVE_USER));
+  localized_strings->SetString("signinButton",
+      l10n_util::GetStringUTF16(IDS_LOGIN_BUTTON));
+  localized_strings->SetString("addUser",
+      l10n_util::GetStringUTF16(IDS_ADD_USER_BUTTON));
+  localized_strings->SetString("cancel", l10n_util::GetStringUTF16(IDS_CANCEL));
+  localized_strings->SetString("browseAsGuest",
+      l10n_util::GetStringUTF16(IDS_GO_INCOGNITO_BUTTON));
+  localized_strings->SetString("createAccount",
+      l10n_util::GetStringUTF16(IDS_CREATE_ACCOUNT_HTML));
+  localized_strings->SetString("guestSignin",
+      l10n_util::GetStringUTF16(IDS_BROWSE_WITHOUT_SIGNING_IN_HTML));
+  localized_strings->SetString("shutDown",
+      l10n_util::GetStringUTF16(IDS_SHUTDOWN_BUTTON));
+  localized_strings->SetString("showApps",
+      l10n_util::GetStringUTF16(IDS_KIOSK_APPS_BUTTON));
+  localized_strings->SetString("signOutUser",
+      l10n_util::GetStringUTF16(IDS_SCREEN_LOCK_SIGN_OUT));
+  localized_strings->SetString("bootIntoWallpaper", "off");
+  localized_strings->SetBoolean("enableAppMode", false);
+
+  // For AccountPickerScreen.
+  localized_strings->SetString("screenType", "login-add-user");
+  localized_strings->SetString("highlightStrength", "normal");
+  localized_strings->SetString("title", "User Chooser");
+  localized_strings->SetString("publicAccountReminder",
+      l10n_util::GetStringUTF16(IDS_LOGIN_PUBLIC_ACCOUNT_SIGNOUT_REMINDER));
+  localized_strings->SetString("publicAccountEnter",
+      l10n_util::GetStringUTF16(IDS_LOGIN_PUBLIC_ACCOUNT_ENTER));
+  localized_strings->SetString("publicAccountEnterAccessibleName",
+      l10n_util::GetStringUTF16(
+          IDS_LOGIN_PUBLIC_ACCOUNT_ENTER_ACCESSIBLE_NAME));
+  localized_strings->SetString("lockAnimationsType", "new");
+  localized_strings->SetString("passwordHint",
+      l10n_util::GetStringUTF16(IDS_LOGIN_POD_EMPTY_PASSWORD_TEXT));
+  localized_strings->SetString("podMenuButtonAccessibleName",
+      l10n_util::GetStringUTF16(IDS_LOGIN_POD_MENU_BUTTON_ACCESSIBLE_NAME));
+  localized_strings->SetString("podMenuRemoveItemAccessibleName",
+      l10n_util::GetStringUTF16(
+          IDS_LOGIN_POD_MENU_REMOVE_ITEM_ACCESSIBLE_NAME));
+  localized_strings->SetString("ownerUserPattern",
+      l10n_util::GetStringUTF16(IDS_LOGIN_POD_OWNER_USER));
+  localized_strings->SetString("removeUser",
+      l10n_util::GetStringUTF16(IDS_LOGIN_POD_REMOVE_USER));
+  localized_strings->SetString("passwordFieldAccessibleName",
+      l10n_util::GetStringUTF16(IDS_LOGIN_POD_PASSWORD_FIELD_ACCESSIBLE_NAME));
+  localized_strings->SetString("publicAccountInfoFormat",
+      l10n_util::GetStringUTF16(IDS_LOGIN_PUBLIC_ACCOUNT_INFO_FORMAT));
+
+  // For GaiaSigninScreen.
+  localized_strings->SetString("signinScreenTitle",
+      l10n_util::GetStringUTF16(IDS_SIGNIN_SCREEN_TITLE));
+  localized_strings->SetString("createLocallyManagedUser",
+      l10n_util::GetStringUTF16(IDS_CREATE_LOCALLY_MANAGED_USER_HTML));
+  localized_strings->SetString("createManagedUserFeatureName",
+      l10n_util::GetStringUTF16(IDS_CREATE_LOCALLY_MANAGED_USER_FEATURE_NAME));
+  localized_strings->SetString("createManagedUserNoManagerText",
+      l10n_util::GetStringUTF16(
+          IDS_CREATE_LOCALLY_MANAGED_USER_NO_MANAGER_TEXT));
+  localized_strings->SetString("learnMore",
+      l10n_util::GetStringUTF16(IDS_LEARN_MORE));
+}
+
+void UserChooserScreenHandler::SendUserList() {
+  ListValue users_list;
+  base::FilePath current_profile_path =
+      web_ui()->GetWebContents()->GetBrowserContext()->GetPath();
+  const ProfileInfoCache& info_cache =
+      g_browser_process->profile_manager()->GetProfileInfoCache();
+
+  for (size_t i = 0; i < info_cache.GetNumberOfProfiles(); ++i) {
+    DictionaryValue* profile_value = new DictionaryValue();
+
+    base::FilePath profile_path = info_cache.GetPathOfProfileAtIndex(i);
+    bool is_active_user = (profile_path == current_profile_path);
+    bool needs_signin = info_cache.ProfileIsSigninRequiredAtIndex(i);
+
+    profile_value->SetString(
+        kKeyUsername, info_cache.GetUserNameOfProfileAtIndex(i));
+    profile_value->SetString(
+        kKeyEmailAddress, info_cache.GetUserNameOfProfileAtIndex(i));
+    profile_value->SetString(
+        kKeyDisplayName, info_cache.GetNameOfProfileAtIndex(i));
+    profile_value->SetBoolean(kKeyPublicAccount, false);
+    profile_value->SetBoolean(kKeyLocallyManagedUser, false);
+    profile_value->SetBoolean(kKeySignedIn, is_active_user);
+    profile_value->SetBoolean(kKeyNeedsSignin, needs_signin);
+    profile_value->SetBoolean(kKeyIsOwner, false);
+    profile_value->SetBoolean(kKeyCanRemove, true);
+    profile_value->SetBoolean(kKeyIsDesktop, true);
+
+    bool is_gaia_picture =
+        info_cache.IsUsingGAIAPictureOfProfileAtIndex(i) &&
+        info_cache.GetGAIAPictureOfProfileAtIndex(i);
+
+    gfx::Image icon = profiles::GetSizedAvatarIconWithBorder(
+        info_cache.GetAvatarIconOfProfileAtIndex(i), is_gaia_picture, 160, 160);
+    profile_value->SetString(kKeyAvatarUrl,
+        webui::GetBitmapDataUrl(icon.AsBitmap()));
+
+    if (is_active_user)
+      users_list.Insert(0, profile_value);
+    else
+      users_list.Append(profile_value);
+  }
+
+  web_ui()->CallJavascriptFunction("login.AccountPickerScreen.loadUsers",
+    users_list, base::FundamentalValue(false), base::FundamentalValue(true));
+}