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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_TEST_OOBE_SCREEN_WAITER_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_TEST_OOBE_SCREEN_WAITER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "chrome/browser/chromeos/login/ui/oobe_display.h"
     10 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
     11 
     12 namespace content {
     13 class MessageLoopRunner;
     14 }
     15 
     16 namespace chromeos {
     17 
     18 // A waiter that blocks until the expected oobe screen is reached.
     19 class OobeScreenWaiter : public OobeUI::Observer {
     20  public:
     21   explicit OobeScreenWaiter(OobeDisplay::Screen expected_screen);
     22   virtual ~OobeScreenWaiter();
     23 
     24   // Run message loop to wait for the expected_screen.
     25   void Wait();
     26 
     27   // Similar to Wait() but does not assert the current screen is
     28   // expected_screen on exit. Use this when there are multiple screen changes
     29   // during the wait and the screen to be waited is not the final one.
     30   void WaitNoAssertCurrentScreen();
     31 
     32   // OobeUI::Observer implementation:
     33   virtual void OnCurrentScreenChanged(
     34         OobeDisplay::Screen current_screen,
     35         OobeDisplay::Screen new_screen) OVERRIDE;
     36 
     37  private:
     38   OobeUI* GetOobeUI();
     39 
     40   bool waiting_for_screen_;
     41   OobeDisplay::Screen expected_screen_;
     42   scoped_refptr<content::MessageLoopRunner> runner_;
     43 
     44   DISALLOW_COPY_AND_ASSIGN(OobeScreenWaiter);
     45 };
     46 
     47 }  // namespace chromeos
     48 
     49 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_TEST_OOBE_SCREEN_WAITER_H_
     50