Revert of Reset Screen moved to ScreenContext. (patchset #7 id:120001 of https://codereview.chromium.org/904163003/)

Reason for revert:
This is faling a compile on ChromeOS bots:

http://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20ChromeOS/builds/77470

Original issue's description:
> Reset Screen moved to ScreenContext.
>
> BUG=456778
>
> Committed: https://crrev.com/4b77f613917020e58b31975355e4ca2347f216e2
> Cr-Commit-Position: refs/heads/master@{#316212}
>
> Committed: https://crrev.com/ba85904895874b5d82d78bcb499c3c5ee7388e34
> Cr-Commit-Position: refs/heads/master@{#316232}

[email protected],[email protected]
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=456778

Review URL: https://codereview.chromium.org/928513002

Cr-Commit-Position: refs/heads/master@{#316237}

Author: jonross

chrome/browser/chromeos/login/screens/reset_model.cc

@@ -1,250 +1,54 @@
-// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// 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/chromeos/login/screens/reset_screen.h"
 
-#include "base/command_line.h"
-#include "base/metrics/histogram.h"
-#include "base/prefs/pref_registry_simple.h"
-#include "base/prefs/pref_service.h"
-#include "base/values.h"
-#include "chrome/browser/browser_process.h"
+#include "base/logging.h"
 #include "chrome/browser/chromeos/login/screens/base_screen_delegate.h"
-#include "chrome/browser/chromeos/login/screens/error_screen.h"
-#include "chrome/browser/chromeos/login/screens/network_error.h"
-#include "chrome/browser/chromeos/login/screens/reset_view.h"
-#include "chrome/browser/chromeos/reset/metrics.h"
-#include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
-#include "chrome/common/pref_names.h"
-#include "chromeos/chromeos_switches.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
-#include "chromeos/dbus/power_manager_client.h"
-#include "chromeos/dbus/session_manager_client.h"
-
+#include "chrome/browser/chromeos/login/wizard_controller.h"
 
 namespace chromeos {
 
 ResetScreen::ResetScreen(BaseScreenDelegate* base_screen_delegate,
-                         ResetView* view)
-    : ResetModel(base_screen_delegate),
-      view_(view),
-      weak_ptr_factory_(this) {
-  DCHECK(view_);
-  if (view_)
-    view_->Bind(*this);
-  context_.SetInteger(kContextKeyScreenState, STATE_RESTART_REQUIRED);
-  context_.SetBoolean(kContextKeyIsRollbackAvailable, false);
-  context_.SetBoolean(kContextKeyIsRollbackChecked, false);
-  context_.SetBoolean(kContextKeyIsConfirmational, false);
-  context_.SetBoolean(kContextKeyIsOfficialBuild, false);
-#if defined(OFFICIAL_BUILD)
-  context_.SetBoolean(kContextKeyIsOfficialBuild, true);
-#endif
+                         ResetScreenActor* actor)
+    : BaseScreen(base_screen_delegate), actor_(actor) {
+  DCHECK(actor_);
+  if (actor_)
+    actor_->SetDelegate(this);
 }
 
 ResetScreen::~ResetScreen() {
-  if (view_)
-    view_->Unbind();
-  DBusThreadManager::Get()->GetUpdateEngineClient()->RemoveObserver(this);
+  if (actor_)
+    actor_->SetDelegate(NULL);
 }
 
 void ResetScreen::PrepareToShow() {
-  if (view_)
-    view_->PrepareToShow();
+  if (actor_)
+    actor_->PrepareToShow();
 }
 
 void ResetScreen::Show() {
-  if (view_)
-    view_->Show();
-
-  int dialog_type = -1;  // used by UMA metrics.
-
-  ContextEditor context_editor = GetContextEditor();
-
-  bool restart_required = !base::CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kFirstExecAfterBoot);
-  if (restart_required) {
-    context_editor.SetInteger(kContextKeyScreenState, STATE_RESTART_REQUIRED);
-    dialog_type = reset::DIALOG_SHORTCUT_RESTART_REQUIRED;
-  } else {
-    context_editor.SetInteger(kContextKeyScreenState, STATE_POWERWASH_PROPOSAL);
-  }
-
-  // Set availability of Rollback feature.
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kDisableRollbackOption)) {
-    context_editor.SetBoolean(kContextKeyIsRollbackAvailable, false);
-    dialog_type = reset::DIALOG_SHORTCUT_OFFERING_ROLLBACK_UNAVAILABLE;
-  } else {
-    chromeos::DBusThreadManager::Get()->GetUpdateEngineClient()->
-        CanRollbackCheck(base::Bind(&ResetScreen::OnRollbackCheck,
-        weak_ptr_factory_.GetWeakPtr()));
-  }
-
-  if (dialog_type >= 0) {
-    UMA_HISTOGRAM_ENUMERATION("Reset.ChromeOS.PowerwashDialogShown",
-                              dialog_type,
-                              reset::DIALOG_VIEW_TYPE_SIZE);
-  }
-
-  PrefService* prefs = g_browser_process->local_state();
-  prefs->SetBoolean(prefs::kFactoryResetRequested, false);
-  prefs->CommitPendingWrite();
+  if (actor_)
+    actor_->Show();
 }
 
 void ResetScreen::Hide() {
-  if (view_)
-    view_->Hide();
-}
-
-void ResetScreen::OnViewDestroyed(ResetView* view) {
-  if (view_ == view)
-    view_ = nullptr;
+  if (actor_)
+    actor_->Hide();
 }
 
-void ResetScreen::OnUserAction(const std::string& action_id) {
-  if (action_id == kUserActionCancelReset)
-    OnCancel();
-  else if (action_id == kUserActionResetRestartPressed)
-    OnRestart();
-  else if (action_id == kUserActionResetPowerwashPressed)
-    OnPowerwash();
-  else if (action_id == kUserActionResetLearnMorePressed)
-    OnLearnMore();
-  else if (action_id == kUserActionResetRollbackToggled)
-    OnToggleRollback();
-  else if (action_id == kUserActionResetShowConfirmationPressed)
-    OnShowConfirm();
-  else if (action_id == kUserActionResetResetConfirmationDismissed)
-    OnConfirmationDismissed();
-  else
-    BaseScreen::OnUserAction(action_id);
+std::string ResetScreen::GetName() const {
+  return WizardController::kResetScreenName;
 }
 
-void ResetScreen::OnCancel() {
-  if (context_.GetInteger(
-      kContextKeyScreenState, STATE_RESTART_REQUIRED) == STATE_REVERT_PROMISE)
-    return;
-  // Hide Rollback view for the next show.
-  if (context_.GetBoolean(kContextKeyIsRollbackAvailable) &&
-      context_.GetBoolean(kContextKeyIsRollbackChecked))
-    OnToggleRollback();
+void ResetScreen::OnExit() {
   Finish(BaseScreenDelegate::RESET_CANCELED);
-  DBusThreadManager::Get()->GetUpdateEngineClient()->RemoveObserver(this);
-}
-
-void ResetScreen::OnPowerwash() {
-  if (context_.GetInteger(kContextKeyScreenState, 0) !=
-      STATE_POWERWASH_PROPOSAL)
-    return;
-
-  GetContextEditor().SetBoolean(kContextKeyIsConfirmational, false);
-  CommitContextChanges();
-
-  if (context_.GetBoolean(kContextKeyIsRollbackAvailable) &&
-      context_.GetBoolean(kContextKeyIsRollbackChecked)) {
-    GetContextEditor().SetInteger(kContextKeyScreenState, STATE_REVERT_PROMISE);
-    DBusThreadManager::Get()->GetUpdateEngineClient()->AddObserver(this);
-    VLOG(1) << "Starting Rollback";
-    DBusThreadManager::Get()->GetUpdateEngineClient()->Rollback();
-  } else {
-    if (context_.GetBoolean(kContextKeyIsRollbackChecked) &&
-        !context_.GetBoolean(kContextKeyIsRollbackAvailable)) {
-      NOTREACHED() <<
-          "Rollback was checked but not available. Starting powerwash.";
-    }
-    VLOG(1) << "Starting Powerwash";
-    DBusThreadManager::Get()->GetSessionManagerClient()->StartDeviceWipe();
-  }
-}
-
-void ResetScreen::OnRestart() {
-  PrefService* prefs = g_browser_process->local_state();
-  prefs->SetBoolean(prefs::kFactoryResetRequested, true);
-  prefs->CommitPendingWrite();
-
-  chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
-}
-
-void ResetScreen::OnToggleRollback() {
-  // Hide Rollback if visible.
-  if (context_.GetBoolean(kContextKeyIsRollbackAvailable) &&
-      context_.GetBoolean(kContextKeyIsRollbackChecked)) {
-    VLOG(1) << "Hiding rollback view on reset screen";
-    GetContextEditor().SetBoolean(kContextKeyIsRollbackChecked, false);
-    return;
-  }
-
-  // Show Rollback if available.
-  VLOG(1) << "Requested rollback availability" <<
-             context_.GetBoolean(kContextKeyIsRollbackAvailable);
-  if (context_.GetBoolean(kContextKeyIsRollbackAvailable) &&
-      !context_.GetBoolean(kContextKeyIsRollbackChecked)) {
-    UMA_HISTOGRAM_ENUMERATION(
-        "Reset.ChromeOS.PowerwashDialogShown",
-        reset::DIALOG_SHORTCUT_OFFERING_ROLLBACK_AVAILABLE,
-        reset::DIALOG_VIEW_TYPE_SIZE);
-    GetContextEditor().SetBoolean(kContextKeyIsRollbackChecked, true);
-  }
-}
-
-void ResetScreen::OnShowConfirm() {
-  int dialog_type = context_.GetBoolean(kContextKeyIsRollbackChecked) ?
-      reset::DIALOG_SHORTCUT_CONFIRMING_POWERWASH_AND_ROLLBACK :
-      reset::DIALOG_SHORTCUT_CONFIRMING_POWERWASH_ONLY;
-  UMA_HISTOGRAM_ENUMERATION(
-      "Reset.ChromeOS.PowerwashDialogShown",
-      dialog_type,
-      reset::DIALOG_VIEW_TYPE_SIZE);
-
-  GetContextEditor().SetBoolean(kContextKeyIsConfirmational, true);
-}
-
-void ResetScreen::OnLearnMore() {
-#if defined(OFFICIAL_BUILD)
-  VLOG(1) << "Trying to view the help article about reset options.";
-  if (!help_app_.get())
-    help_app_ = new HelpAppLauncher(GetNativeWindow());
-  help_app_->ShowHelpTopic(HelpAppLauncher::HELP_POWERWASH);
-#endif
-}
-
-void ResetScreen::OnConfirmationDismissed() {
-  GetContextEditor().SetBoolean(kContextKeyIsConfirmational, false);
-}
-
-void ResetScreen::UpdateStatusChanged(
-    const UpdateEngineClient::Status& status) {
-  VLOG(1) << "Update status change to " << status.status;
-  if (status.status == UpdateEngineClient::UPDATE_STATUS_ERROR ||
-      status.status ==
-          UpdateEngineClient::UPDATE_STATUS_REPORTING_ERROR_EVENT) {
-    GetContextEditor().SetInteger(kContextKeyScreenState, STATE_ERROR);
-    // Show error screen.
-    GetErrorScreen()->SetUIState(NetworkError::UI_STATE_ROLLBACK_ERROR);
-    get_base_screen_delegate()->ShowErrorScreen();
-  } else if (status.status ==
-      UpdateEngineClient::UPDATE_STATUS_UPDATED_NEED_REBOOT) {
-    DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
-  }
-}
-
-// Invoked from call to CanRollbackCheck upon completion of the DBus call.
-void ResetScreen::OnRollbackCheck(bool can_rollback) {
-  VLOG(1) << "Callback from CanRollbackCheck, result " << can_rollback;
-  int dialog_type = can_rollback ?
-      reset::DIALOG_SHORTCUT_OFFERING_ROLLBACK_AVAILABLE :
-      reset::DIALOG_SHORTCUT_OFFERING_ROLLBACK_UNAVAILABLE;
-  UMA_HISTOGRAM_ENUMERATION("Reset.ChromeOS.PowerwashDialogShown",
-                            dialog_type,
-                            reset::DIALOG_VIEW_TYPE_SIZE);
-
-  GetContextEditor().SetBoolean(kContextKeyIsRollbackAvailable, can_rollback);
 }
 
-ErrorScreen* ResetScreen::GetErrorScreen() {
-  return get_base_screen_delegate()->GetErrorScreen();
+void ResetScreen::OnActorDestroyed(ResetScreenActor* actor) {
+  if (actor_ == actor)
+    actor_ = NULL;
 }
 
 }  // namespace chromeos