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      1 // Copyright (c) 2009 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_COCOA_PROTOCOLS_MAC_H_
      6 #define BASE_COCOA_PROTOCOLS_MAC_H_
      7 
      8 #import <Cocoa/Cocoa.h>
      9 
     10 // The Mac OS X 10.6 SDK introduced new protocols used for delegates.  These
     11 // protocol defintions were 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 #if !defined(MAC_OS_X_VERSION_10_6) || \
     18     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_6
     19 
     20 #define DEFINE_EMPTY_PROTOCOL(p) \
     21 @protocol p \
     22 @end
     23 
     24 DEFINE_EMPTY_PROTOCOL(NSAlertDelegate)
     25 DEFINE_EMPTY_PROTOCOL(NSAnimationDelegate)
     26 DEFINE_EMPTY_PROTOCOL(NSControlTextEditingDelegate)
     27 DEFINE_EMPTY_PROTOCOL(NSMatrixDelegate)
     28 DEFINE_EMPTY_PROTOCOL(NSMenuDelegate)
     29 DEFINE_EMPTY_PROTOCOL(NSOutlineViewDelegate)
     30 DEFINE_EMPTY_PROTOCOL(NSTableViewDataSource)
     31 DEFINE_EMPTY_PROTOCOL(NSTableViewDelegate)
     32 DEFINE_EMPTY_PROTOCOL(NSTextFieldDelegate)
     33 DEFINE_EMPTY_PROTOCOL(NSTextViewDelegate)
     34 DEFINE_EMPTY_PROTOCOL(NSWindowDelegate)
     35 
     36 #undef DEFINE_EMPTY_PROTOCOL
     37 
     38 #endif
     39 
     40 #endif  // BASE_COCOA_PROTOCOLS_MAC_H_
     41