Merge from viewer-2-0

1 files changed, 33 insertions, 0 deletions

diff --git a/indra/llui/llscrolllistctrl.h b/indra/llui/llscrolllistctrl.h
index d2d2379328..e819c5fdea 100644
--- a/indra/llui/llscrolllistctrl.h
+++ b/indra/llui/llscrolllistctrl.h
@@ -73,6 +73,30 @@ public:
 
 	// *TODO: Add callbacks to Params
 	typedef boost::function<void (void)> callback_t;
+
+	template<typename T> struct maximum
+	{
+		typedef T result_type;
+
+		template<typename InputIterator>
+		T operator()(InputIterator first, InputIterator last) const
+		{
+			// If there are no slots to call, just return the
+			// default-constructed value
+			if(first == last ) return T();
+			T max_value = *first++;
+			while (first != last) {
+				if (max_value < *first)
+				max_value = *first;
+				++first;
+			}
+
+			return max_value;
+		}
+	};
+
+	
+	typedef boost::signals2::signal<S32 (S32,const LLScrollListItem*,const LLScrollListItem*),maximum<S32> > sort_signal_t;
 	
 	struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
 	{
@@ -362,6 +386,13 @@ public:
 	void			setNeedsSort(bool val = true) { mSorted = !val; }
 	void			dirtyColumns(); // some operation has potentially affected column layout or ordering
 
+	boost::signals2::connection setSortCallback(sort_signal_t::slot_type cb )
+	{
+		if (!mSortCallback) mSortCallback = new sort_signal_t();
+		return mSortCallback->connect(cb);
+	}
+
+
 protected:
 	// "Full" interface: use this when you're creating a list that has one or more of the following:
 	// * contains icons
@@ -474,6 +505,8 @@ private:
 
 	typedef std::pair<S32, BOOL> sort_column_t;
 	std::vector<sort_column_t>	mSortColumns;
+
+	sort_signal_t*	mSortCallback;
 }; // end class LLScrollListCtrl
 
 #endif  // LL_SCROLLLISTCTRL_H