Put OOBE UI on touch display if no keyboard detected

chrome/browser/ui/webui/chromeos/login/oobe_ui.cc

 // Copyright (c) 2012 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/chromeos/login/oobe_ui.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 33 matching lines @@
 #include "chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/host_pairing_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/kiosk_app_menu_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/kiosk_autolaunch_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/kiosk_enable_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/network_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/network_state_informer.h"
+#include "chrome/browser/ui/webui/chromeos/login/oobe_display_chooser.h"
 #include "chrome/browser/ui/webui/chromeos/login/reset_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/supervised_user_creation_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/terms_of_service_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/update_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/user_board_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/user_image_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/wrong_hwid_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/network_element_localized_strings_provider.h"
 #include "chrome/browser/ui/webui/options/chromeos/user_image_source.h"
 #include "chrome/browser/ui/webui/test_files_request_filter.h"
 #include "chrome/browser/ui/webui/theme_source.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/browser_resources.h"
 #include "chrome/grit/chrome_unscaled_resources.h"
 #include "chrome/grit/component_extension_resources.h"
 #include "chromeos/chromeos_switches.h"
 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "content/public/common/content_switches.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/webui/web_ui_util.h"
+#include "ui/display/display.h"
+#include "ui/events/devices/input_device.h"
+#include "ui/events/devices/input_device_manager.h"
 
 namespace chromeos {
 
 namespace {
 
 const char* kKnownDisplayTypes[] = {OobeUI::kOobeDisplay,
                                     OobeUI::kLoginDisplay,
                                     OobeUI::kLockDisplay,
                                     OobeUI::kUserAddingDisplay,
                                     OobeUI::kAppLaunchSplashDisplay,
@@ skipping 109 matching lines @@
   std::string path = url.path().size() ? url.path().substr(1) : "";
   if (std::find(kKnownDisplayTypes,
                 kKnownDisplayTypes + arraysize(kKnownDisplayTypes),
                 path) == kKnownDisplayTypes + arraysize(kKnownDisplayTypes)) {
     LOG(ERROR) << "Unknown display type '" << path << "'. Setting default.";
     return OobeUI::kLoginDisplay;
   }
   return path;
 }
 
+bool IsKeyboardConnected() {
+  auto& keyboards = ui::InputDeviceManager::GetInstance()->GetKeyboardDevices();

[jdufault, 2017/05/08 17:44:58]

nit: auto type is not obvious

+  for (auto& keyboard : keyboards) {
+    if (keyboard.type == ui::INPUT_DEVICE_INTERNAL ||
+        keyboard.type == ui::INPUT_DEVICE_EXTERNAL) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
 }  // namespace
 
 // static
 const char OobeUI::kOobeDisplay[] = "oobe";
 const char OobeUI::kLoginDisplay[] = "login";
 const char OobeUI::kLockDisplay[] = "lock";
 const char OobeUI::kUserAddingDisplay[] = "user-adding";
 const char OobeUI::kAppLaunchSplashDisplay[] = "app-launch-splash";
 const char OobeUI::kArcKioskSplashDisplay[] = "arc-kiosk-splash";
 
@@ skipping 110 matching lines @@
   network_element::AddLocalizedStrings(html_source);
 
   // Set up the chrome://userimage/ source.
   options::UserImageSource* user_image_source =
       new options::UserImageSource();
   content::URLDataSource::Add(profile, user_image_source);
 
   // TabHelper is required for OOBE webui to make webview working on it.
   content::WebContents* contents = web_ui->GetWebContents();
   extensions::TabHelper::CreateForWebContents(contents);
+
+  if (!IsKeyboardConnected() &&
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kOobePreferTouchDisplay)) {
+    oobe_display_chooser_ = OobeDisplayChooser::CreateDefault();
+  }
 }
 
 OobeUI::~OobeUI() {
   network_dropdown_handler_->RemoveObserver(GetView<ErrorScreenHandler>());
   if (ash_util::IsRunningInMash()) {
     // TODO: Ash needs to expose screen dimming api. See
     // http://crbug.com/646034.
     NOTIMPLEMENTED();
   }
 }
@@ skipping 203 matching lines @@
 }
 
 bool OobeUI::IsJSReady(const base::Closure& display_is_ready_callback) {
   if (!ready_)
     ready_callbacks_.push_back(display_is_ready_callback);
   return ready_;
 }
 
 void OobeUI::ShowOobeUI(bool show) {
   core_handler_->ShowOobeUI(show);
+
+  if (show && oobe_display_chooser_) {
+    oobe_display_chooser_->TryToPlaceUIOnTouchDisplay();

[jdufault, 2017/05/08 17:44:58]

nit: no {}

+  }
 }
 
 void OobeUI::ShowSigninScreen(const LoginScreenContext& context,
                               SigninScreenHandlerDelegate* delegate,
                               NativeWindowDelegate* native_window_delegate) {
   // Check our device mode.
   policy::BrowserPolicyConnectorChromeOS* connector =
       g_browser_process->platform_part()->browser_policy_connector_chromeos();
   if (connector->GetDeviceMode() == policy::DEVICE_MODE_LEGACY_RETAIL_MODE) {
     // If we're in legacy retail mode, the best thing we can do is launch the
@@ skipping 28 matching lines @@
   if (oobe_ui_md_mode_ ==
       g_browser_process->local_state()->GetBoolean(prefs::kOobeMdMode)) {
     return;
   }
 
   base::DictionaryValue localized_strings;
   GetLocalizedStrings(&localized_strings);
   static_cast<CoreOobeView*>(core_handler_)->ReloadContent(localized_strings);
 }
 
+void OobeUI::OnDisplayAdded(const display::Display& new_display) {
+  if (oobe_display_chooser_) {
+    oobe_display_chooser_->OnDisplayAdded(new_display);

[jdufault, 2017/05/08 17:44:58]

nit: no {}

+  }
+}
+
 }  // namespace chromeos