Migrate (Network)ErrorScreen to ScreenContext

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

+// 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_VIEW_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_VIEW_H_
+
+#include "base/strings/string16.h"
+#include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
+
+namespace chromeos {
+
+class NetworkErrorModel;
+
+// Interface for dependency injection between ErrorScreen and its actual
+// representation. Owned by ErrorScreen.
+class NetworkErrorView {
+ public:
+  virtual ~NetworkErrorView() {}
+
+  // Prepare the contents to showing.
+  virtual void PrepareToShow() = 0;
+
+  // Shows the contents of the screen.
+  virtual void Show() = 0;
+
+  // Hides the contents of the screen.
+  virtual void Hide() = 0;
+
+  // Binds |model| to the view.
+  virtual void Bind(NetworkErrorModel& model) = 0;
+
+  // Unbinds model from the view.
+  virtual void Unbind() = 0;
+
+  // Switches to |screen|.
+  virtual void ShowScreen(OobeUI::Screen screen) = 0;
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_VIEW_H_