implemented CPCoding support for CPSortDescriptor and made CPTableColumn decode it's _sortDescriptorPrototype

AppKit/CPTableColumn.j

@@ -396,7 +396,8 @@ var CPTableColumnIdentifierKey   = @"CPTableColumnIdentifierKey",
     CPTableColumnMinWidthKey     = @"CPTableColumnMinWidthKey",
     CPTableColumnMaxWidthKey     = @"CPTableColumnMaxWidthKey",
     CPTableColumnResizingMaskKey = @"CPTableColumnResizingMaskKey",
-    CPTableColumnIsHiddenkey     = @"CPTableColumnIsHiddenKey";
+    CPTableColumnIsHiddenkey     = @"CPTableColumnIsHiddenKey",
+    CPSortDescriptorPrototypeKey = @"CPSortDescriptorPrototypeKey";
 
 @implementation CPTableColumn (CPCoding)
 
@@ -419,6 +420,8 @@ var CPTableColumnIdentifierKey   = @"CPTableColumnIdentifierKey",
 
         _resizingMask  = [aCoder decodeBoolForKey:CPTableColumnResizingMaskKey];
         _isHidden = [aCoder decodeBoolForKey:CPTableColumnIsHiddenkey];
+        
+        _sortDescriptorPrototype = [aCoder decodeObjectForKey:CPSortDescriptorPrototypeKey];
     }
 
     return self;
@@ -437,6 +440,8 @@ var CPTableColumnIdentifierKey   = @"CPTableColumnIdentifierKey",
 
     [aCoder encodeObject:_resizingMask forKey:CPTableColumnResizingMaskKey];
     [aCoder encodeBool:_isHidden forKey:CPTableColumnIsHiddenkey];
+    
+    [aCoder encodeObject:_sortDescriptorPrototype forKey:CPSortDescriptorPrototypeKey];
 }
 
 @end

Foundation/CPSortDescriptor.j

@@ -149,3 +149,31 @@ CPOrderedDescending     =  1;
 }
 
 @end
+
+var CPSortDescriptorKeyKey = @"CPSortDescriptorKeyKey", // Don't you just love naming schemes ;)
+    CPSortDescriptorAscendingKey = @"CPSortDescriptorAscendingKey",
+    CPSortDescriptorSelectorKey = @"CPSortDescriptorSelectorKey";
+
+@implementation CPSortDescriptor (CPCoding)
+
+- (id)initWithCoder:(CPCoder)aCoder
+{
+    if (self = [super init])
+    {
+        _key = [aCoder decodeObjectForKey:CPSortDescriptorKeyKey];
+        _ascending = [aCoder decodeBoolForKey:CPSortDescriptorAscendingKey];
+        _selector = CPSelectorFromString([aCoder decodeObjectForKey:CPSortDescriptorSelectorKey]);
+    }
+    
+    return self;
+}
+
+- (void)encodeWithCoder:(CPCoder)aCoder
+{
+    [aCoder encodeObject:_key forKey:CPSortDescriptorKeyKey];
+    [aCoder encodeBool:_ascending forKey:CPSortDescriptorAscendingKey];
+    [aCoder encodeObject:CPStringFromSelector(_selector) forKey:CPSortDescriptorSelectorKey];
+}
+
+@end
+

Tools/nib2cib/NSAppKit.j

@@ -67,6 +67,7 @@
 @import "NSViewController.j"
 @import "NSWindowTemplate.j"
 @import "WebView.j"
+@import "NSSortDescriptor.j"
 
 
 function CP_NSMapClassName(aClassName)

Tools/nib2cib/NSSortDescriptor.j

@@ -0,0 +1,35 @@
+@import <Foundation/CPSortDescriptor.j>
+
+@implementation CPSortDescriptor (NSCoding)
+{
+}
+
+- (id)NS_initWithCoder:(CPCoder)aCoder
+{
+    if (self = [super init])
+    {
+        _key = [aCoder decodeObjectForKey:@"NSKey"];
+        _selector = CPSelectorFromString([aCoder decodeObjectForKey:@"NSSelector"]);
+        _ascending = [aCoder decodeBoolForKey:@"NSAscending"];
+    }
+
+    return self;
+}
+
+@end
+
+@implementation NSSortDescriptor : CPSortDescriptor
+{
+}
+
+- (id)initWithCoder:(CPCoder)aCoder
+{
+    return [self NS_initWithCoder:aCoder];
+}
+
+- (Class)classForKeyedArchiver
+{
+    return [CPSortDescriptor class];
+}
+
+@end

Tools/nib2cib/NSTableColumn.j

@@ -53,6 +53,8 @@
 
         _resizingMask = [aCoder decodeBoolForKey:@"NSIsResizeable"] ? CPTableColumnUserResizingMask : CPTableColumnAutoresizingMask;
         _isHidden = [aCoder decodeBoolForKey:@"NSHidden"];
+
+        _sortDescriptorPrototype = [aCoder decodeObjectForKey:@"NSSortDescriptorPrototype"];
     }
 
     return self;