From 25ac77a612c47645787e7af71f7298d511c480ea Mon Sep 17 00:00:00 2001
From: alberth <alberth@openttd.org>
Date: Sun, 26 Apr 2009 16:30:12 +0000
Subject: (svn r16167) -Codechange: Added empty-ness test to nested widget
 containers.

---
 src/widget_type.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/widget_type.h b/src/widget_type.h
index 39ed87c2b..f34be9bf1 100644
--- a/src/widget_type.h
+++ b/src/widget_type.h
@@ -212,6 +212,9 @@ public:
 	void Add(NWidgetBase *wid);
 	void SetPIP(uint8 pip_pre, uint8 pip_inter, uint8 pip_post);
 
+	/** Return whether the container is empty. */
+	inline bool IsEmpty() { return head == NULL; };
+
 protected:
 	uint8 pip_pre;     ///< Amount of space before first widget.
 	uint8 pip_inter;   ///< Amount of space between widgets.
-- 
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