1 // Copyright 2014 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 CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_PROVIDER_H_ 6 #define CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_PROVIDER_H_ 7 8 #include "base/macros.h" 9 #include "content/common/content_export.h" 10 #include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h" 11 12 namespace content { 13 14 class ScreenOrientationDispatcherHost; 15 class WebContents; 16 17 // Interface that needs to be implemented by any backend that wants to handle 18 // screen orientation lock/unlock. 19 class CONTENT_EXPORT ScreenOrientationProvider { 20 public: 21 // Lock the screen orientation to |orientations|. 22 virtual void LockOrientation( 23 int request_id, 24 blink::WebScreenOrientationLockType orientations) = 0; 25 26 // Unlock the screen orientation. 27 virtual void UnlockOrientation() = 0; 28 29 // Inform about a screen orientation update. It is called to let the provider 30 // know if a lock has been resolved. 31 virtual void OnOrientationChange() = 0; 32 33 virtual ~ScreenOrientationProvider() {} 34 35 protected: 36 friend class ScreenOrientationDispatcherHostImpl; 37 38 static ScreenOrientationProvider* Create( 39 ScreenOrientationDispatcherHost* dispatcher_host, 40 WebContents* web_contents); 41 42 ScreenOrientationProvider() {} 43 44 DISALLOW_COPY_AND_ASSIGN(ScreenOrientationProvider); 45 }; 46 47 #if !defined(OS_ANDROID) 48 // static 49 ScreenOrientationProvider* ScreenOrientationProvider::Create( 50 ScreenOrientationDispatcherHost* dispatcher_host, 51 WebContents* web_contents) { 52 return NULL; 53 } 54 #endif // !defined(OS_ANDROID) 55 56 } // namespace content 57 58 #endif // CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_PROVIDER_H_ 59
