Fixed: text date picker stepper incorrectly enabled after decode.

Without this fix the textual date picker would properly disable the text field bit but not its stepper when unarchived.

AppKit/CPDatePicker/CPDatePicker.j

@@ -216,6 +216,9 @@ CPEraDatePickerElementFlag              = 0x0100;
     [_datePickerCalendar setHidden:YES];
     [self addSubview:_datePickerCalendar];
 
+    // We might have been unarchived in a disabled state.
+    [_datePickerTextfield setEnabled:[self isEnabled]];
+
     [self setNeedsDisplay:YES];
     [self setNeedsLayout];
 }
@@ -651,7 +654,9 @@ var CPDatePickerModeKey         = @"CPDatePickerModeKey",
 
 - (void)encodeWithCoder:(CPCoder)aCoder
 {
+    // FIXME Do we need to encode _datePickerTextfield and _datePickerCalendar? As subviews they'll be encoded, but when we decode we recreate them anyhow.
     [super encodeWithCoder:aCoder];
+
     [aCoder encodeDouble:_timeInterval forKey:CPIntervalKey];
     [aCoder encodeInt:_datePickerMode forKey:CPDatePickerModeKey];
     [aCoder encodeInt:_datePickerStyle forKey:CPDatePickerStyleKey];
@@ -664,6 +669,7 @@ var CPDatePickerModeKey         = @"CPDatePickerModeKey",
     [aCoder encodeObject:_backgroundColor forKey:CPBackgroundColorKey];
     [aCoder encodeObject:_drawsBackground forKey:CPDrawsBackgroundKey];
     [aCoder encodeObject:_isBordered forKey:CPBorderedKey];
+
 }
 
 @end