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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CHROME_BROWSER_UI_COCOA_OBJC_METHOD_SWIZZLE_H_ | 5 #ifndef CHROME_COMMON_MAC_OBJC_METHOD_SWIZZLE_H_ |
| 6 #define CHROME_BROWSER_UI_COCOA_OBJC_METHOD_SWIZZLE_H_ | 6 #define CHROME_COMMON_MAC_OBJC_METHOD_SWIZZLE_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #import <objc/objc-class.h> | 9 #import <objc/objc-class.h> |
| 10 | 10 |
| 11 // You should think twice every single time you use anything from this | 11 // You should think twice every single time you use anything from this |
| 12 // namespace. | 12 // namespace. |
| 13 namespace ObjcEvilDoers { | 13 namespace ObjcEvilDoers { |
| 14 | 14 |
| 15 // This is similar to class_getInstanceMethod(), except that it | 15 // This is similar to class_getInstanceMethod(), except that it |
| 16 // returns NULL if |aClass| does not directly implement |aSelector|. | 16 // returns NULL if |aClass| does not directly implement |aSelector|. |
| 17 Method GetImplementedInstanceMethod(Class aClass, SEL aSelector); | 17 Method GetImplementedInstanceMethod(Class aClass, SEL aSelector); |
| 18 | 18 |
| 19 // Exchanges the implementation of |originalSelector| and | 19 // Exchanges the implementation of |originalSelector| and |
| 20 // |alternateSelector| within |aClass|. Both selectors must be | 20 // |alternateSelector| within |aClass|. Both selectors must be |
| 21 // implemented directly by |aClass|, not inherited. The IMP returned | 21 // implemented directly by |aClass|, not inherited. The IMP returned |
| 22 // is for |originalSelector| (for purposes of forwarding). | 22 // is for |originalSelector| (for purposes of forwarding). |
| 23 IMP SwizzleImplementedInstanceMethods( | 23 IMP SwizzleImplementedInstanceMethods( |
| 24 Class aClass, const SEL originalSelector, const SEL alternateSelector); | 24 Class aClass, const SEL originalSelector, const SEL alternateSelector); |
| 25 | 25 |
| 26 } // namespace ObjcEvilDoers | 26 } // namespace ObjcEvilDoers |
| 27 | 27 |
| 28 #endif // CHROME_BROWSER_UI_COCOA_OBJC_METHOD_SWIZZLE_H_ | 28 #endif // CHROME_COMMON_MAC_OBJC_METHOD_SWIZZLE_H_ |
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