From 8eb52f9a888c2183b7ee022eb52cea24ce8bb8c8 Mon Sep 17 00:00:00 2001
From: Antoine Mercadal <antoine.mercadal@gmail.com>
Date: Mon, 20 Oct 2014 19:36:48 -0700
Subject: [PATCH] FIXED: Previous commit about explicitely define the observing
 options broke the abolity to hide buttons in CPButtonBar

This patch ensure to correctly set the options
---
 AppKit/CPButtonBar.j | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/AppKit/CPButtonBar.j b/AppKit/CPButtonBar.j
index 4dd9db247..c524a2fcb 100644
--- a/AppKit/CPButtonBar.j
+++ b/AppKit/CPButtonBar.j
@@ -28,6 +28,8 @@
 @global CPPopUpButtonStatePullsDown
 @global CPKeyValueChangeOldKey
 @global CPKeyValueChangeNewKey
+@global CPKeyValueObservingOptionNew
+@global CPKeyValueObservingOptionOld
 
 @implementation CPButtonBar : CPView
 {
@@ -137,7 +139,7 @@
 
     for (var i = [_buttons count] - 1; i >= 0; i--)
     {
-        [_buttons[i] addObserver:self forKeyPath:@"hidden" options:nil context:nil];
+        [_buttons[i] addObserver:self forKeyPath:@"hidden" options:CPKeyValueObservingOptionNew | CPKeyValueObservingOptionOld context:nil];
         [_buttons[i] setBordered:YES];
     }