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James Robinson646469d2014-10-03 15:33:28 -07001// 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
Nick Bray0bcbd3b2015-03-12 16:29:36 -07005#ifndef BASE_MAC_COCOA_PROTOCOLS_H_
6#define BASE_MAC_COCOA_PROTOCOLS_H_
James Robinson646469d2014-10-03 15:33:28 -07007
8#import <Cocoa/Cocoa.h>
9
James Robinson646469d2014-10-03 15:33:28 -070010// 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
24DEFINE_EMPTY_PROTOCOL(NSDraggingDestination)
25DEFINE_EMPTY_PROTOCOL(ICCameraDeviceDownloadDelegate)
26
27#endif // MAC_OS_X_VERSION_10_7
28
29#undef DEFINE_EMPTY_PROTOCOL
30
Nick Bray0bcbd3b2015-03-12 16:29:36 -070031#endif // BASE_MAC_COCOA_PROTOCOLS_H_