conditionalize usage of 10.6-only protocols

David Catmull (Uncommon)
Uncommon/gitx@e5b603f188760d341ca5c578ee9a42ebcc46ba4b

Conflicts:

	DBPrefsWindowController.h
	PBGitHistoryController.h
	PBGitSidebarController.h
	PBGitWindowController.h

Author: laullon

DBPrefsWindowController.h

@@ -42,7 +42,7 @@
 #import <Cocoa/Cocoa.h>
 
 
-@interface DBPrefsWindowController : NSWindowController /*<NSAnimationDelegate,NSToolbarDelegate>*/{
+@interface DBPrefsWindowController : NSWindowController PROTOCOL_10_6(NSAnimationDelegate,NSToolbarDelegate){
 	NSMutableArray *toolbarIdentifiers;
 	NSMutableDictionary *toolbarViews;
 	NSMutableDictionary *toolbarItems;

GitX_Prefix.pch

@@ -17,3 +17,16 @@
 #ifndef ALog
 #define ALog(...) DLog(__VA_ARGS__)
 #endif
+
+// In 10.6, some NSObject categories (like NSWindowDelegate) were changed to
+// protocols. Thus to avoid warnings we need to add protocol specifiers, but
+// only when compiling for 10.6+.
+#ifndef MAC_OS_X_VERSION_10_6
+#define MAC_OS_X_VERSION_10_6 1060
+#endif
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+#define PROTOCOL_10_6(...) <__VA_ARGS__>
+#else
+#define PROTOCOL_10_6(...)
+#endif

PBGitHistoryController.h

@@ -22,7 +22,7 @@
 
 @class PBHistorySearchController;
 
-@interface PBGitHistoryController : PBViewController /*<NSOutlineViewDelegate>*/{
+@interface PBGitHistoryController : PBViewController PROTOCOL_10_6(NSOutlineViewDelegate){
 	IBOutlet PBRefController *refController;
 	IBOutlet NSSearchField *searchField;
 	IBOutlet NSArrayController* commitController;

PBGitSidebarController.h

@@ -13,7 +13,7 @@
 @class PBGitHistoryController;
 @class PBGitCommitController;
 
-@interface PBGitSidebarController : PBViewController /*<NSOutlineViewDelegate>*/{
+@interface PBGitSidebarController : PBViewController PROTOCOL_10_6(NSOutlineViewDelegate, NSMenuDelegate){
 	IBOutlet NSWindow *window;
 	IBOutlet NSOutlineView *sourceView;
 	IBOutlet NSView *sourceListControlsView;

PBGitWindowController.h

@@ -14,7 +14,7 @@
 
 @class PBViewController, PBGitSidebarController, PBGitCommitController;
 
-@interface PBGitWindowController : NSWindowController /*<NSWindowDelegate>*/{
+@interface PBGitWindowController : NSWindowController PROTOCOL_10_6(NSWindowDelegate){
 	__weak PBGitRepository* repository;
 
 	PBViewController *contentController;