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| 1 // Copyright (c) 2010 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 BASE_MAC_SCOPED_AEDESC_H_ | |
| 6 #define BASE_MAC_SCOPED_AEDESC_H_ | |
| 7 | |
| 8 #import <CoreServices/CoreServices.h> | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 | |
| 12 namespace base { | |
| 13 namespace mac { | |
| 14 | |
| 15 // The ScopedAEDesc is used to scope AppleEvent descriptors. On creation, | |
| 16 // it will store a NULL descriptor. On destruction, it will dispose of the | |
| 17 // descriptor. | |
| 18 // | |
| 19 // This class is parameterized for additional type safety checks. You can use | |
| 20 // the generic AEDesc type by not providing a template parameter: | |
| 21 // ScopedAEDesc<> desc; | |
| 22 template <typename AEDescType = AEDesc> | |
| 23 class ScopedAEDesc { | |
| 24 public: | |
| 25 ScopedAEDesc() { | |
| 26 AECreateDesc(typeNull, NULL, 0, &desc_); | |
| 27 } | |
| 28 | |
| 29 ~ScopedAEDesc() { | |
| 30 AEDisposeDesc(&desc_); | |
| 31 } | |
| 32 | |
| 33 // Used for in parameters. | |
| 34 operator const AEDescType*() { | |
| 35 return &desc_; | |
| 36 } | |
| 37 | |
| 38 // Used for out parameters. | |
| 39 AEDescType* OutPointer() { | |
| 40 return &desc_; | |
| 41 } | |
| 42 | |
| 43 private: | |
| 44 AEDescType desc_; | |
| 45 | |
| 46 DISALLOW_COPY_AND_ASSIGN(ScopedAEDesc); | |
| 47 }; | |
| 48 | |
| 49 } // namespace mac | |
| 50 } // namespace base | |
| 51 | |
| 52 #endif // BASE_MAC_SCOPED_AEDESC_H_ | |
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