chromeos: Move files in //ash/common to //ash, part 1

ash/system/chromeos/screen_layout_observer.cc

Index: ash/system/chromeos/screen_layout_observer.cc
diff --git a/ash/system/chromeos/screen_layout_observer.cc b/ash/system/chromeos/screen_layout_observer.cc
deleted file mode 100644
index 1110c769928c0c820973ab7daa99a805b91c97a5..0000000000000000000000000000000000000000
--- a/ash/system/chromeos/screen_layout_observer.cc
+++ /dev/null
@@ -1,424 +0,0 @@
-// 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 "ash/system/chromeos/screen_layout_observer.h"
-
-#include <memory>
-#include <utility>
-#include <vector>
-
-#include "ash/common/metrics/user_metrics_action.h"
-#include "ash/common/system/chromeos/devicetype_utils.h"
-#include "ash/common/system/system_notifier.h"
-#include "ash/common/system/tray/fixed_sized_image_view.h"
-#include "ash/common/system/tray/system_tray_controller.h"
-#include "ash/common/system/tray/system_tray_delegate.h"
-#include "ash/common/system/tray/tray_constants.h"
-#include "ash/common/wm_shell.h"
-#include "ash/display/screen_orientation_controller_chromeos.h"
-#include "ash/resources/grit/ash_resources.h"
-#include "ash/shell.h"
-#include "ash/strings/grit/ash_strings.h"
-#include "base/bind.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
-#include "ui/display/display.h"
-#include "ui/display/manager/display_manager.h"
-#include "ui/display/types/display_constants.h"
-#include "ui/message_center/message_center.h"
-#include "ui/message_center/notification.h"
-#include "ui/message_center/notification_delegate.h"
-#include "ui/strings/grit/ui_strings.h"
-
-using message_center::Notification;
-
-namespace ash {
-namespace {
-
-display::DisplayManager* GetDisplayManager() {
-  return Shell::GetInstance()->display_manager();
-}
-
-base::string16 GetDisplayName(int64_t display_id) {
-  return base::UTF8ToUTF16(
-      GetDisplayManager()->GetDisplayNameForId(display_id));
-}
-
-base::string16 GetDisplaySize(int64_t display_id) {
-  display::DisplayManager* display_manager = GetDisplayManager();
-
-  const display::Display* display =
-      &display_manager->GetDisplayForId(display_id);
-
-  // We don't show display size for mirrored display. Fallback
-  // to empty string if this happens on release build.
-  bool mirroring = display_manager->mirroring_display_id() == display_id;
-  DCHECK(!mirroring);
-  if (mirroring)
-    return base::string16();
-
-  DCHECK(display->is_valid());
-  return base::UTF8ToUTF16(display->size().ToString());
-}
-
-// Attempts to open the display settings, returns true if successful.
-bool OpenSettings() {
-  // switch is intentionally introduced without default, to cause an error when
-  // a new type of login status is introduced.
-  switch (WmShell::Get()->system_tray_delegate()->GetUserLoginStatus()) {
-    case LoginStatus::NOT_LOGGED_IN:
-    case LoginStatus::LOCKED:
-      return false;
-
-    case LoginStatus::USER:
-    case LoginStatus::OWNER:
-    case LoginStatus::GUEST:
-    case LoginStatus::PUBLIC:
-    case LoginStatus::SUPERVISED:
-    case LoginStatus::KIOSK_APP:
-    case LoginStatus::ARC_KIOSK_APP:
-      SystemTrayDelegate* delegate = WmShell::Get()->system_tray_delegate();
-      if (delegate->ShouldShowSettings()) {
-        WmShell::Get()->system_tray_controller()->ShowDisplaySettings();
-        return true;
-      }
-      break;
-  }
-
-  return false;
-}
-
-// Callback to handle a user selecting the notification view.
-void OpenSettingsFromNotification() {
-  WmShell::Get()->RecordUserMetricsAction(
-      UMA_STATUS_AREA_DISPLAY_NOTIFICATION_SELECTED);
-  if (OpenSettings()) {
-    WmShell::Get()->RecordUserMetricsAction(
-        UMA_STATUS_AREA_DISPLAY_NOTIFICATION_SHOW_SETTINGS);
-  }
-}
-
-// Returns the name of the currently connected external display whose ID is
-// |external_display_id|. This should not be used when the external display is
-// used for mirroring.
-base::string16 GetExternalDisplayName(int64_t external_display_id) {
-  DCHECK(!display::Display::IsInternalDisplayId(external_display_id));
-
-  display::DisplayManager* display_manager = GetDisplayManager();
-  DCHECK(!display_manager->IsInMirrorMode());
-
-  if (external_display_id == display::kInvalidDisplayId)
-    return l10n_util::GetStringUTF16(IDS_DISPLAY_NAME_UNKNOWN);
-
-  // The external display name may have an annotation of "(width x height)" in
-  // case that the display is rotated or its resolution is changed.
-  base::string16 name = GetDisplayName(external_display_id);
-  const display::ManagedDisplayInfo& display_info =
-      display_manager->GetDisplayInfo(external_display_id);
-  if (display_info.GetActiveRotation() != display::Display::ROTATE_0 ||
-      display_info.configured_ui_scale() != 1.0f ||
-      !display_info.overscan_insets_in_dip().IsEmpty()) {
-    name =
-        l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_DISPLAY_ANNOTATED_NAME,
-                                   name, GetDisplaySize(external_display_id));
-  } else if (display_info.overscan_insets_in_dip().IsEmpty() &&
-             display_info.has_overscan()) {
-    name = l10n_util::GetStringFUTF16(
-        IDS_ASH_STATUS_TRAY_DISPLAY_ANNOTATED_NAME, name,
-        l10n_util::GetStringUTF16(
-            IDS_ASH_STATUS_TRAY_DISPLAY_ANNOTATION_OVERSCAN));
-  }
-
-  return name;
-}
-
-// Returns true if docked mode is currently enabled.
-bool IsDockedModeEnabled() {
-  display::DisplayManager* display_manager = GetDisplayManager();
-  if (!display::Display::HasInternalDisplay())
-    return false;
-
-  for (size_t i = 0; i < display_manager->GetNumDisplays(); ++i) {
-    if (display::Display::IsInternalDisplayId(
-            display_manager->GetDisplayAt(i).id())) {
-      return false;
-    }
-  }
-
-  // We have an internal display but it's not one of the active displays.
-  return true;
-}
-
-// Returns the notification message that should be shown when mirror display
-// mode is entered.
-base::string16 GetEnterMirrorModeMessage() {
-  if (display::Display::HasInternalDisplay()) {
-    return l10n_util::GetStringFUTF16(
-        IDS_ASH_STATUS_TRAY_DISPLAY_MIRRORING,
-        GetDisplayName(GetDisplayManager()->mirroring_display_id()));
-  }
-
-  return l10n_util::GetStringUTF16(
-      IDS_ASH_STATUS_TRAY_DISPLAY_MIRRORING_NO_INTERNAL);
-}
-
-// Returns the notification message that should be shown when unified desktop
-// mode is entered.
-base::string16 GetEnterUnifiedModeMessage() {
-  return l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_DISPLAY_UNIFIED);
-}
-
-// Returns the notification message that should be shown when unified desktop
-// mode is exited.
-base::string16 GetExitUnifiedModeMessage() {
-  return l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_DISPLAY_UNIFIED_EXITING);
-}
-
-base::string16 GetDisplayRemovedMessage(
-    const display::ManagedDisplayInfo& removed_display_info,
-    base::string16* out_additional_message) {
-  return l10n_util::GetStringFUTF16(
-      IDS_ASH_STATUS_TRAY_DISPLAY_REMOVED,
-      base::UTF8ToUTF16(removed_display_info.name()));
-}
-
-base::string16 GetDisplayAddedMessage(int64_t added_display_id,
-                                      base::string16* additional_message_out) {
-  if (!display::Display::HasInternalDisplay()) {
-    return l10n_util::GetStringUTF16(
-        IDS_ASH_STATUS_TRAY_DISPLAY_EXTENDED_NO_INTERNAL);
-  }
-
-  return l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_DISPLAY_EXTENDED,
-                                    GetExternalDisplayName(added_display_id));
-}
-
-}  // namespace
-
-const char ScreenLayoutObserver::kNotificationId[] =
-    "chrome://settings/display";
-
-ScreenLayoutObserver::ScreenLayoutObserver() {
-  WmShell::Get()->AddDisplayObserver(this);
-  UpdateDisplayInfo(NULL);
-}
-
-ScreenLayoutObserver::~ScreenLayoutObserver() {
-  WmShell::Get()->RemoveDisplayObserver(this);
-}
-
-void ScreenLayoutObserver::UpdateDisplayInfo(
-    ScreenLayoutObserver::DisplayInfoMap* old_info) {
-  if (old_info)
-    old_info->swap(display_info_);
-  display_info_.clear();
-
-  display::DisplayManager* display_manager = GetDisplayManager();
-  for (size_t i = 0; i < display_manager->GetNumDisplays(); ++i) {
-    int64_t id = display_manager->GetDisplayAt(i).id();
-    display_info_[id] = display_manager->GetDisplayInfo(id);
-  }
-}
-
-bool ScreenLayoutObserver::GetDisplayMessageForNotification(
-    const ScreenLayoutObserver::DisplayInfoMap& old_info,
-    base::string16* out_message,
-    base::string16* out_additional_message) {
-  if (old_display_mode_ != current_display_mode_) {
-    // Detect changes in the mirror mode status.
-    if (current_display_mode_ == DisplayMode::MIRRORING) {
-      *out_message = GetEnterMirrorModeMessage();
-      return true;
-    }
-    if (old_display_mode_ == DisplayMode::MIRRORING &&
-        GetExitMirrorModeMessage(out_message, out_additional_message)) {
-      return true;
-    }
-
-    // Detect changes in the unified mode status.
-    if (current_display_mode_ == DisplayMode::UNIFIED) {
-      *out_message = GetEnterUnifiedModeMessage();
-      return true;
-    }
-    if (old_display_mode_ == DisplayMode::UNIFIED) {
-      *out_message = GetExitUnifiedModeMessage();
-      return true;
-    }
-
-    if (current_display_mode_ == DisplayMode::DOCKED ||
-        old_display_mode_ == DisplayMode::DOCKED) {
-      // We no longer show any notification for docked mode events.
-      // crbug.com/674719.
-      return false;
-    }
-  }
-
-  // Displays are added or removed.
-  if (display_info_.size() < old_info.size()) {
-    // A display has been removed.
-    for (const auto& iter : old_info) {
-      if (display_info_.count(iter.first))
-        continue;
-
-      *out_message =
-          GetDisplayRemovedMessage(iter.second, out_additional_message);
-      return true;
-    }
-  } else if (display_info_.size() > old_info.size()) {
-    // A display has been added.
-    for (const auto& iter : display_info_) {
-      if (old_info.count(iter.first))
-        continue;
-
-      *out_message = GetDisplayAddedMessage(iter.first, out_additional_message);
-      return true;
-    }
-  }
-
-  for (const auto& iter : display_info_) {
-    DisplayInfoMap::const_iterator old_iter = old_info.find(iter.first);
-    if (old_iter == old_info.end()) {
-      // The display's number is same but different displays. This happens
-      // for the transition between docked mode and mirrored display.
-      // This condition can never be reached here, since it is handled above.
-      NOTREACHED() << "A display mode transition that should have been handled"
-                      "earlier.";
-      return false;
-    }
-
-    if (iter.second.configured_ui_scale() !=
-        old_iter->second.configured_ui_scale()) {
-      *out_additional_message = l10n_util::GetStringFUTF16(
-          IDS_ASH_STATUS_TRAY_DISPLAY_RESOLUTION_CHANGED,
-          GetDisplayName(iter.first), GetDisplaySize(iter.first));
-      return true;
-    }
-    if (iter.second.GetActiveRotation() !=
-        old_iter->second.GetActiveRotation()) {
-      int rotation_text_id = 0;
-      switch (iter.second.GetActiveRotation()) {
-        case display::Display::ROTATE_0:
-          rotation_text_id = IDS_ASH_STATUS_TRAY_DISPLAY_STANDARD_ORIENTATION;
-          break;
-        case display::Display::ROTATE_90:
-          rotation_text_id = IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_90;
-          break;
-        case display::Display::ROTATE_180:
-          rotation_text_id = IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_180;
-          break;
-        case display::Display::ROTATE_270:
-          rotation_text_id = IDS_ASH_STATUS_TRAY_DISPLAY_ORIENTATION_270;
-          break;
-      }
-      *out_additional_message = l10n_util::GetStringFUTF16(
-          IDS_ASH_STATUS_TRAY_DISPLAY_ROTATED, GetDisplayName(iter.first),
-          l10n_util::GetStringUTF16(rotation_text_id));
-      return true;
-    }
-  }
-
-  // Found nothing special
-  return false;
-}
-
-void ScreenLayoutObserver::CreateOrUpdateNotification(
-    const base::string16& message,
-    const base::string16& additional_message) {
-  // Always remove the notification to make sure the notification appears
-  // as a popup in any situation.
-  message_center::MessageCenter::Get()->RemoveNotification(kNotificationId,
-                                                           false /* by_user */);
-
-  if (message.empty() && additional_message.empty())
-    return;
-
-  // Don't display notifications for accelerometer triggered screen rotations.
-  // See http://crbug.com/364949
-  if (Shell::GetInstance()
-          ->screen_orientation_controller()
-          ->ignore_display_configuration_updates()) {
-    return;
-  }
-
-  ui::ResourceBundle& bundle = ui::ResourceBundle::GetSharedInstance();
-  std::unique_ptr<Notification> notification(new Notification(
-      message_center::NOTIFICATION_TYPE_SIMPLE, kNotificationId, message,
-      additional_message, bundle.GetImageNamed(IDR_AURA_NOTIFICATION_DISPLAY),
-      base::string16(),  // display_source
-      GURL(),
-      message_center::NotifierId(message_center::NotifierId::SYSTEM_COMPONENT,
-                                 system_notifier::kNotifierDisplay),
-      message_center::RichNotificationData(),
-      new message_center::HandleNotificationClickedDelegate(
-          base::Bind(&OpenSettingsFromNotification))));
-
-  WmShell::Get()->RecordUserMetricsAction(
-      UMA_STATUS_AREA_DISPLAY_NOTIFICATION_CREATED);
-  message_center::MessageCenter::Get()->AddNotification(
-      std::move(notification));
-}
-
-void ScreenLayoutObserver::OnDisplayConfigurationChanged() {
-  DisplayInfoMap old_info;
-  UpdateDisplayInfo(&old_info);
-
-  old_display_mode_ = current_display_mode_;
-  if (GetDisplayManager()->IsInMirrorMode())
-    current_display_mode_ = DisplayMode::MIRRORING;
-  else if (GetDisplayManager()->IsInUnifiedMode())
-    current_display_mode_ = DisplayMode::UNIFIED;
-  else if (IsDockedModeEnabled())
-    current_display_mode_ = DisplayMode::DOCKED;
-  else if (GetDisplayManager()->GetNumDisplays() > 2)
-    current_display_mode_ = DisplayMode::EXTENDED_3_PLUS;
-  else if (GetDisplayManager()->GetNumDisplays() == 2)
-    current_display_mode_ = DisplayMode::EXTENDED_2;
-  else
-    current_display_mode_ = DisplayMode::SINGLE;
-
-  if (!show_notifications_for_testing)
-    return;
-
-  base::string16 message;
-  base::string16 additional_message;
-  if (GetDisplayMessageForNotification(old_info, &message, &additional_message))
-    CreateOrUpdateNotification(message, additional_message);
-}
-
-bool ScreenLayoutObserver::GetExitMirrorModeMessage(
-    base::string16* out_message,
-    base::string16* out_additional_message) {
-  switch (current_display_mode_) {
-    case DisplayMode::EXTENDED_3_PLUS:
-      // Mirror mode was turned off due to having more than two displays.
-      // Show a message that mirror mode for 3+ displays is not supported.
-      *out_message =
-          l10n_util::GetStringUTF16(IDS_ASH_DISPLAY_MIRRORING_NOT_SUPPORTED);
-      return true;
-
-    case DisplayMode::DOCKED:
-      // Handle disabling mirror mode as a result of going to docked mode
-      // when we only have a single display (this means we actually have two
-      // physical displays, one of which is the internal display, but they
-      // were in mirror mode, and hence considered as one. Closing the
-      // internal display disables mirror mode and we still have a single
-      // active display).
-      // Falls through.
-    case DisplayMode::SINGLE:
-      // We're exiting mirror mode because we removed one of the two
-      // displays.
-      *out_message =
-          l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_DISPLAY_MIRROR_EXIT);
-      return true;
-
-    default:
-      // Mirror mode was turned off; other messages should be shown e.g.
-      // extended mode is on, ... etc.
-      return false;
-  }
-}
-
-}  // namespace ash