From 77c039be428f402d1a2c982fa2be68f04e08e8e3 Mon Sep 17 00:00:00 2001
From: beru <berupon@gmail.com>
Date: Mon, 27 Apr 2015 06:18:28 +0900
Subject: [PATCH] add methods to get/set sortability of listbox

---
 include/nana/gui/widgets/listbox.hpp |  5 ++++-
 source/gui/widgets/listbox.cpp       | 23 ++++++++++++++++++++++-
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/include/nana/gui/widgets/listbox.hpp b/include/nana/gui/widgets/listbox.hpp
index 1827a585..4ad8d9da 100644
--- a/include/nana/gui/widgets/listbox.hpp
+++ b/include/nana/gui/widgets/listbox.hpp
@@ -552,7 +552,10 @@ By \a clicking on a header the list get \a reordered, first up, and then down al
 			_m_ease_key(&key);
 		}
 
-		            ///Sets a strict weak ordering comparer for a column
+		bool sortable() const;
+		void sortable(bool enable);
+		
+		///Sets a strict weak ordering comparer for a column
 		void set_sort_compare(size_type col, std::function<bool(const nana::string&, nana::any*,
 				                                        const nana::string&, nana::any*, bool reverse)> strick_ordering);
 
diff --git a/source/gui/widgets/listbox.cpp b/source/gui/widgets/listbox.cpp
index e47706d2..3f7c6a46 100644
--- a/source/gui/widgets/listbox.cpp
+++ b/source/gui/widgets/listbox.cpp
@@ -348,6 +348,16 @@ namespace nana
 					return false;
 				}
 
+				bool sortable() const
+				{
+					return sortable_;
+				}
+
+				void sortable(bool enable)
+				{
+					sortable_ = enable;
+				}
+
 				std::function<bool(const nana::string&, nana::any*, const nana::string&, nana::any*, bool reverse)> fetch_comp(std::size_t index) const
 				{
 					if(index < cont_.size())
@@ -507,6 +517,7 @@ namespace nana
 				}
 			private:
 				bool visible_{true};
+				bool sortable_{true};
 				container cont_;
 			};
 
@@ -3183,7 +3194,7 @@ namespace nana
 					auto prev_state = essence_->ptr_state;
 					essence_->ptr_state = item_state::highlighted;
 					//Do sort
-					if (essence_->pointer_where.first == parts::header && prev_state == item_state::pressed)
+					if (essence_->header.sortable() && essence_->pointer_where.first == parts::header && prev_state == item_state::pressed)
 					{
 						if(essence_->pointer_where.second < essence_->header.cont().size())
 						{
@@ -4018,6 +4029,16 @@ namespace nana
 			return item_proxy(ess);
 		}
 
+		bool listbox::sortable() const
+		{
+			return _m_ess().header.sortable();
+		}
+
+		void listbox::sortable(bool enable)
+		{
+			_m_ess().header.sortable(enable);
+		}
+
 		void listbox::set_sort_compare(size_type col, std::function<bool(const nana::string&, nana::any*, const nana::string&, nana::any*, bool reverse)> strick_ordering)
 		{
 			_m_ess().header.column(col).weak_ordering = std::move(strick_ordering);