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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
| (...skipping 16 matching lines...) Expand all Loading... |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ | 29 */ |
| 30 | 30 |
| 31 #ifndef WebScopedUserGesture_h | 31 #ifndef WebScopedUserGesture_h |
| 32 #define WebScopedUserGesture_h | 32 #define WebScopedUserGesture_h |
| 33 | 33 |
| 34 #include "../platform/WebPrivateOwnPtr.h" | 34 #include "../platform/WebPrivateOwnPtr.h" |
| 35 | 35 |
| 36 namespace blink { | 36 namespace blink { |
| 37 |
| 37 class UserGestureIndicator; | 38 class UserGestureIndicator; |
| 38 } | |
| 39 | |
| 40 namespace blink { | |
| 41 | |
| 42 class WebUserGestureToken; | 39 class WebUserGestureToken; |
| 43 | 40 |
| 44 // An instance of this class, while kept alive, will indicate that we are in | 41 // An instance of this class, while kept alive, will indicate that we are in |
| 45 // the context of a known user gesture. To use, create one, perform whatever | 42 // the context of a known user gesture. To use, create one, perform whatever |
| 46 // actions were done under color of a known user gesture, and then delete it. | 43 // actions were done under color of a known user gesture, and then delete it. |
| 47 // Usually this will be done on the stack. | 44 // Usually this will be done on the stack. |
| 48 // | 45 // |
| 49 // SECURITY WARNING: Do not create several instances of this class for the same | 46 // SECURITY WARNING: Do not create several instances of this class for the same |
| 50 // user gesture. Doing so might enable malicious code to work around certain | 47 // user gesture. Doing so might enable malicious code to work around certain |
| 51 // restrictions such as opening multiple windows. | 48 // restrictions such as opening multiple windows. |
| 52 // Instead, obtain the current WebUserGestureToken from the | 49 // Instead, obtain the current WebUserGestureToken from the |
| 53 // WebUserGestureIndicator, and use this token to create a | 50 // WebUserGestureIndicator, and use this token to create a |
| 54 // WebScopedUserGesture. If the token was alrady consumed, the new | 51 // WebScopedUserGesture. If the token was alrady consumed, the new |
| 55 // WebScopedUserGesture will not indicate that we are in the context of a user | 52 // WebScopedUserGesture will not indicate that we are in the context of a user |
| 56 // gesture. | 53 // gesture. |
| 57 class WebScopedUserGesture { | 54 class WebScopedUserGesture { |
| 58 public: | 55 public: |
| 59 explicit WebScopedUserGesture(const WebUserGestureToken& token) { initialize
WithToken(token); } | 56 explicit WebScopedUserGesture(const WebUserGestureToken& token) { initialize
WithToken(token); } |
| 60 WebScopedUserGesture() { initialize(); } | 57 WebScopedUserGesture() { initialize(); } |
| 61 ~WebScopedUserGesture() { reset(); } | 58 ~WebScopedUserGesture() { reset(); } |
| 62 | 59 |
| 63 private: | 60 private: |
| 64 BLINK_EXPORT void initialize(); | 61 BLINK_EXPORT void initialize(); |
| 65 BLINK_EXPORT void initializeWithToken(const WebUserGestureToken&); | 62 BLINK_EXPORT void initializeWithToken(const WebUserGestureToken&); |
| 66 BLINK_EXPORT void reset(); | 63 BLINK_EXPORT void reset(); |
| 67 | 64 |
| 68 WebPrivateOwnPtr<blink::UserGestureIndicator> m_indicator; | 65 WebPrivateOwnPtr<UserGestureIndicator> m_indicator; |
| 69 }; | 66 }; |
| 70 | 67 |
| 71 } // namespace blink | 68 } // namespace blink |
| 72 | 69 |
| 73 #endif // WebScopedUserGesture_h | 70 #endif // WebScopedUserGesture_h |
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