43 lines
1.4 KiB
Objective-C
43 lines
1.4 KiB
Objective-C
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_COCOA_PROTOCOLS_MAC_H_
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#define BASE_COCOA_PROTOCOLS_MAC_H_
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#import <Cocoa/Cocoa.h>
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// GTM also maintinas a list of empty protocols, but only the ones the library
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// requires. Augment that below.
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#import "third_party/GTM/GTMDefines.h"
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// New Mac OS X SDKs introduce new protocols used for delegates. These
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// protocol defintions aren't not present in earlier releases of the Mac OS X
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// SDK. In order to support building against the new SDK, which requires
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// delegates to conform to these protocols, and earlier SDKs, which do not
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// define these protocols at all, this file will provide empty protocol
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// definitions when used with earlier SDK versions.
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#define DEFINE_EMPTY_PROTOCOL(p) \
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@protocol p \
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@end
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#if !defined(MAC_OS_X_VERSION_10_7) || \
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MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
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DEFINE_EMPTY_PROTOCOL(NSDraggingDestination)
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DEFINE_EMPTY_PROTOCOL(ICCameraDeviceDownloadDelegate)
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#endif // MAC_OS_X_VERSION_10_7
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#if !defined(MAC_OS_X_VERSION_10_8) || \
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MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_8
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DEFINE_EMPTY_PROTOCOL(NSUserNotificationCenterDelegate)
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#endif // MAC_OS_X_VERSION_10_8
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#undef DEFINE_EMPTY_PROTOCOL
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#endif // BASE_COCOA_PROTOCOLS_MAC_H_
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