root/chrome/browser/ui/ash/chrome_shell_delegate.cc

DEFINITIONS

1. IsMultiProfilesEnabled
2. IsIncognitoAllowed
3. IsRunningInForcedAppMode
4. Exit
5. GetActiveBrowserContext
6. CreateAppListViewDelegate
7. CreateShelfDelegate
8. CreateContextMenu
9. CreateWindowTreeHostFactory
10. CreateGPUSupport
11. GetProductName
12. CreateKeyboardControllerProxy
13. VirtualKeyboardActivated
14. AddVirtualKeyboardStateObserver
15. RemoveVirtualKeyboardStateObserver

// 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/ash/chrome_shell_delegate.h"

#include "apps/app_window.h"
#include "apps/app_window_registry.h"
#include "ash/content_support/gpu_support_impl.h"
#include "ash/host/window_tree_host_factory.h"
#include "ash/magnifier/magnifier_constants.h"
#include "ash/wm/window_state.h"
#include "ash/wm/window_util.h"
#include "base/command_line.h"
#include "chrome/browser/app_mode/app_mode_utils.h"
#include "chrome/browser/lifetime/application_lifetime.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/app_list/app_list_service.h"
#include "chrome/browser/ui/app_list/app_list_view_delegate.h"
#include "chrome/browser/ui/ash/app_list/app_list_controller_ash.h"
#include "chrome/browser/ui/ash/ash_keyboard_controller_proxy.h"
#include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
#include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
#include "chrome/browser/ui/browser_commands.h"
#include "chrome/common/chrome_switches.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"

#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
#include "chrome/browser/chromeos/display/display_configuration_observer.h"
#include "chrome/browser/chromeos/login/user_manager.h"
#endif

// static
ChromeShellDelegate* ChromeShellDelegate::instance_ = NULL;

ChromeShellDelegate::ChromeShellDelegate()
    : shelf_delegate_(NULL) {
  instance_ = this;
  PlatformInit();
}

ChromeShellDelegate::~ChromeShellDelegate() {
  if (instance_ == this)
    instance_ = NULL;
}

bool ChromeShellDelegate::IsMultiProfilesEnabled() const {
  // TODO(skuhne): There is a function named profiles::IsMultiProfilesEnabled
  // which does similar things - but it is not the same. We should investigate
  // if these two could be folded together.
  if (!CommandLine::ForCurrentProcess()->HasSwitch(switches::kMultiProfiles))
    return false;
#if defined(OS_CHROMEOS)
  // If there is a user manager, we need to see that we can at least have 2
  // simultaneous users to allow this feature.
  if (!chromeos::UserManager::IsInitialized())
    return false;
  size_t admitted_users_to_be_added =
      chromeos::UserManager::Get()->GetUsersAdmittedForMultiProfile().size();
  size_t logged_in_users =
      chromeos::UserManager::Get()->GetLoggedInUsers().size();
  if (!logged_in_users) {
    // The shelf gets created on the login screen and as such we have to create
    // all multi profile items of the the system tray menu before the user logs
    // in. For special cases like Kiosk mode and / or guest mode this isn't a
    // problem since either the browser gets restarted and / or the flag is not
    // allowed, but for an "ephermal" user (see crbug.com/312324) it is not
    // decided yet if he could add other users to his session or not.
    // TODO(skuhne): As soon as the issue above needs to be resolved, this logic
    // should change.
    logged_in_users = 1;
  }
  if (admitted_users_to_be_added + logged_in_users <= 1)
    return false;
#endif
  return true;
}

bool ChromeShellDelegate::IsIncognitoAllowed() const {
#if defined(OS_CHROMEOS)
  return chromeos::AccessibilityManager::Get()->IsIncognitoAllowed();
#endif
  return true;
}

bool ChromeShellDelegate::IsRunningInForcedAppMode() const {
  return chrome::IsRunningInForcedAppMode();
}

void ChromeShellDelegate::Exit() {
  chrome::AttemptUserExit();
}

content::BrowserContext* ChromeShellDelegate::GetActiveBrowserContext() {
#if defined(OS_CHROMEOS)
  DCHECK(chromeos::UserManager::Get()->GetLoggedInUsers().size());
#endif
  return ProfileManager::GetActiveUserProfile();
}

app_list::AppListViewDelegate*
ChromeShellDelegate::CreateAppListViewDelegate() {
  DCHECK(ash::Shell::HasInstance());
  // Shell will own the created delegate, and the delegate will own
  // the controller.
  return new AppListViewDelegate(
      Profile::FromBrowserContext(GetActiveBrowserContext()),
      AppListService::Get(chrome::HOST_DESKTOP_TYPE_ASH)->
      GetControllerDelegate());
}

ash::ShelfDelegate* ChromeShellDelegate::CreateShelfDelegate(
    ash::ShelfModel* model) {
  if (!shelf_delegate_) {
    shelf_delegate_ = ChromeLauncherController::CreateInstance(NULL, model);
    shelf_delegate_->Init();
  }
  return shelf_delegate_;
}

ui::MenuModel* ChromeShellDelegate::CreateContextMenu(
    aura::Window* root,
    ash::ShelfItemDelegate* item_delegate,
    ash::ShelfItem* item) {
  DCHECK(shelf_delegate_);
  // Don't show context menu for exclusive app runtime mode.
  if (chrome::IsRunningInAppMode())
    return NULL;

  if (item_delegate && item)
    return new LauncherContextMenu(shelf_delegate_, item_delegate, item, root);

  return new LauncherContextMenu(shelf_delegate_, root);
}

ash::WindowTreeHostFactory* ChromeShellDelegate::CreateWindowTreeHostFactory() {
  return ash::WindowTreeHostFactory::Create();
}

ash::GPUSupport* ChromeShellDelegate::CreateGPUSupport() {
  // Chrome uses real GPU support.
  return new ash::GPUSupportImpl;
}

base::string16 ChromeShellDelegate::GetProductName() const {
  return l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
}

keyboard::KeyboardControllerProxy*
    ChromeShellDelegate::CreateKeyboardControllerProxy() {
  return new AshKeyboardControllerProxy();
}

void ChromeShellDelegate::VirtualKeyboardActivated(bool activated) {
  FOR_EACH_OBSERVER(ash::VirtualKeyboardStateObserver,
                    keyboard_state_observer_list_,
                    OnVirtualKeyboardStateChanged(activated));
}

void ChromeShellDelegate::AddVirtualKeyboardStateObserver(
    ash::VirtualKeyboardStateObserver* observer) {
  keyboard_state_observer_list_.AddObserver(observer);
}

void ChromeShellDelegate::RemoveVirtualKeyboardStateObserver(
    ash::VirtualKeyboardStateObserver* observer) {
  keyboard_state_observer_list_.RemoveObserver(observer);
}