1 // Copyright (c) 2012 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_COCOA_PROTOCOLS_H_ 6 #define BASE_MAC_COCOA_PROTOCOLS_H_ 7 8 #import <Cocoa/Cocoa.h> 9 10 // New Mac OS X SDKs introduce new protocols used for delegates. These 11 // protocol defintions aren't not present in earlier releases of the Mac OS X 12 // SDK. In order to support building against the new SDK, which requires 13 // delegates to conform to these protocols, and earlier SDKs, which do not 14 // define these protocols at all, this file will provide empty protocol 15 // definitions when used with earlier SDK versions. 16 17 #define DEFINE_EMPTY_PROTOCOL(p) \ 18 @protocol p \ 19 @end 20 21 #if !defined(MAC_OS_X_VERSION_10_7) || \ 22 MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7 23 24 DEFINE_EMPTY_PROTOCOL(NSDraggingDestination) 25 DEFINE_EMPTY_PROTOCOL(ICCameraDeviceDownloadDelegate) 26 27 #endif // MAC_OS_X_VERSION_10_7 28 29 #undef DEFINE_EMPTY_PROTOCOL 30 31 #endif // BASE_MAC_COCOA_PROTOCOLS_H_ 32