Migrate (Network)ErrorScreen to ScreenContext

chrome/browser/chromeos/login/screens/network_error_model.h

+// Copyright 2015 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_MODEL_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_MODEL_H_
+
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/chromeos/login/screens/base_screen.h"
+#include "chrome/browser/chromeos/login/screens/network_error.h"
+#include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
+
+namespace base {
+class ListValue;
+}
+
+namespace chromeos {
+
+class BaseScreenDelegate;
+class NetworkErrorView;
+
+class NetworkErrorModel : public BaseScreen {
+ public:
+  static const char kContextKeyErrorStateCode[];
+  static const char kContextKeyErrorStateNetwork[];
+  static const char kContextKeyGuestSigninAllowed[];
+  static const char kContextKeyOfflineSigninAllowed[];
+  static const char kContextKeyShowConnectingIndicator[];
+  static const char kContextKeyUIState[];
+  static const char kUserActionConfigureCertsButtonClicked[];
+  static const char kUserActionDiagnoseButtonClicked[];
+  static const char kUserActionLaunchOobeGuestSessionClicked[];
+  static const char kUserActionLocalStateErrorPowerwashButtonClicked[];
+  static const char kUserActionRebootButtonClicked[];
+  static const char kUserActionShowCaptivePortalClicked[];
+
+  explicit NetworkErrorModel(BaseScreenDelegate* base_screen_delegate);
+  ~NetworkErrorModel() override;
+
+  NetworkError::UIState ui_state() const { return ui_state_; }
+  NetworkError::ErrorState error_state() const { return error_state_; }
+
+  // Returns id of the screen behind error screen ("caller" screen).
+  // Returns OobeUI::SCREEN_UNKNOWN if error screen isn't the current
+  // screen.
+  OobeUI::Screen parent_screen() const { return parent_screen_; }
+
+  // BaseScreen:
+  std::string GetName() const override;
+  void OnHide() override;
+
+  // Toggles the guest sign-in prompt.
+  virtual void AllowGuestSignin(bool allowed);
+
+  // Toggles the offline sign-in.
+  virtual void AllowOfflineLogin(bool allowed);
+
+  // Initializes captive portal dialog and shows that if needed.
+  virtual void FixCaptivePortal() = 0;
+
+  // Called when we're asked to hide captive portal dialog.
+  virtual void HideCaptivePortal() = 0;
+
+  // This method is called, when view is being destroyed. Note, if model
+  // is destroyed earlier then it has to call Unbind().
+  virtual void OnViewDestroyed(NetworkErrorView* view) = 0;
+
+  // Sets current UI state.
+  void SetUIState(NetworkError::UIState ui_state);
+
+  // Sets current error screen content according to current UI state,
+  // |error_state|, and |network|.
+  void SetErrorState(NetworkError::ErrorState error_state,
+                     const std::string& network);
+
+  // Sets "parent screen" i.e. one that has initiated this network error screen
+  // instance.
+  virtual void SetParentScreen(OobeUI::Screen parent_screen);
+
+  // Sets callback that is called on hide.
+  void SetHideCallback(const base::Closure& on_hide);
+
+  // Shows captive portal dialog.
+  virtual void ShowCaptivePortal() = 0;
+
+  // Toggles the connection pending indicator.
+  virtual void ShowConnectingIndicator(bool show);
+
+ protected:
+  base::Closure* on_hide_callback() { return on_hide_.get(); }
+
+ private:
+  NetworkError::UIState ui_state_;
+  NetworkError::ErrorState error_state_;
+
+  OobeUI::Screen parent_screen_;
+
+  // Optional callback that is called when NetworkError screen is hidden.
+  scoped_ptr<base::Closure> on_hide_;
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_MODEL_H_