cros: WIP patch to remove EnableDebuggingScreenView

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

 // Copyright 2013 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_CORE_OOBE_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_CORE_OOBE_VIEW_H_
 
 #include <string>
 
 #include "chrome/browser/chromeos/login/help_app_launcher.h"
+#include "chrome/browser/chromeos/login/oobe_screen.h"
 
 namespace base {
 class DictionaryValue;
 }
 
 namespace chromeos {
 
+// CoreOobeView contains the API and general interface between the UI specific
+// (Handlers) and the non-UI specific (Model) classes.
+//
+// The Model -> Handler API is declared inside of CoreOobeView, ie, Model
+// classes invoke these methods which are defined inside of the Handlers.
+//
+// The Handler -> Model API is declared inside of CoreOobeView::Delegate, ie,
+// Handler classes invoke these methods which are defined inside of the Models.
+//
+// Moving all of the existing Views and View::Delegates into this one class will
+// help decouple the current Model/View/Handler setup, which will enable the
+// UI-agnostic code to diverge from the UI implementation as it no longer needs
+// a 1-1 association. Further, the entire API will be visible from one spot;
+// this will enable significant deduplication.
 class CoreOobeView {
  public:
-  virtual ~CoreOobeView() {}
+  class Delegate {
+   public:
+    virtual ~Delegate();
 
+    // Called when enable debugging screen has exited.
+    virtual void OnEnableDebuggingScreenViewExit(bool success);
+
+    // Called when the |view| has been destroyed and should no longer be used.
+    virtual void OnViewDestroyed(CoreOobeView* view);
+  };
+
+  virtual ~CoreOobeView();
+
+  // Set the CoreOobeView::Delegate instance so that derived CoreOobeView types
+  // (aka JS Handlers) can call into generic login code (aka Models).
+  virtual void SetDelegate(Delegate* delegate);
+
+  // Called when the given |screen| should be shown.
+  virtual void Show(OobeScreen screen);
+  virtual void Hide(OobeScreen screen);
+
+  // Associated with CoreOobeView:
   virtual void ShowSignInError(int login_attempts,
                                const std::string& error_text,
                                const std::string& help_link_text,
-                               HelpAppLauncher::HelpTopic help_topic_id) = 0;
-  virtual void ShowTpmError() = 0;
-  virtual void ShowSignInUI(const std::string& email) = 0;
-  virtual void ResetSignInUI(bool force_online) = 0;
-  virtual void ClearUserPodPassword() = 0;
-  virtual void RefocusCurrentPod() = 0;
+                               HelpAppLauncher::HelpTopic help_topic_id);
+  virtual void ShowTpmError();
+  virtual void ShowSignInUI(const std::string& email);
+  virtual void ResetSignInUI(bool force_online);
+  virtual void ClearUserPodPassword();
+  virtual void RefocusCurrentPod();
   virtual void ShowPasswordChangedScreen(bool show_password_error,
-                                         const std::string& email) = 0;
-  virtual void SetUsageStats(bool checked) = 0;
-  virtual void SetOemEulaUrl(const std::string& oem_eula_url) = 0;
-  virtual void SetTpmPassword(const std::string& tmp_password) = 0;
-  virtual void ClearErrors() = 0;
-  virtual void ReloadContent(const base::DictionaryValue& dictionary) = 0;
-  virtual void ShowControlBar(bool show) = 0;
-  virtual void ShowPinKeyboard(bool show) = 0;
-  virtual void SetClientAreaSize(int width, int height) = 0;
-  virtual void ShowDeviceResetScreen() = 0;
-  virtual void ShowEnableDebuggingScreen() = 0;
-  virtual void InitDemoModeDetection() = 0;
-  virtual void StopDemoModeDetection() = 0;
-  virtual void UpdateKeyboardState() = 0;
+                                         const std::string& email);
+  virtual void SetUsageStats(bool checked);
+  virtual void SetOemEulaUrl(const std::string& oem_eula_url);
+  virtual void SetTpmPassword(const std::string& tmp_password);
+  virtual void ClearErrors();
+  virtual void ReloadContent(const base::DictionaryValue& dictionary);
+  virtual void ShowControlBar(bool show);
+  virtual void ShowPinKeyboard(bool show);
+  virtual void SetClientAreaSize(int width, int height);
+  virtual void ShowDeviceResetScreen();
+  virtual void ShowEnableDebuggingScreen();
+  virtual void InitDemoModeDetection();
+  virtual void StopDemoModeDetection();
+  virtual void UpdateKeyboardState();
   virtual void ShowActiveDirectoryPasswordChangeScreen(
-      const std::string& username) = 0;
+      const std::string& username);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_CORE_OOBE_VIEW_H_