1 files changed, 50 insertions, 3 deletions

diff --git a/indra/newview/llnavigationbar.h b/indra/newview/llnavigationbar.h
index 55bbfa164a..9d0abc7a3a 100644
--- a/indra/newview/llnavigationbar.h
+++ b/indra/newview/llnavigationbar.h
@@ -34,14 +34,61 @@
 #define LL_LLNAVIGATIONBAR_H
 
 #include "llpanel.h"
+#include "llbutton.h"
 
-class LLButton;
 class LLLocationInputCtrl;
 class LLMenuGL;
 class LLSearchEditor;
 class LLSearchComboBox;
 
 /**
+ * This button is able to handle click-dragging mouse event.
+ * It has appropriated signal for this event.
+ * Dragging direction can be set from xml by attribute called 'direction'
+ * 
+ * *TODO: move to llui?  
+ */
+
+class LLPullButton : public LLButton
+{
+	LOG_CLASS(LLPullButton);
+	
+public:
+	
+	struct Params : public LLInitParam::Block<Params, LLButton::Params>
+	{
+		Optional<std::string>	direction; // left, right, down, up
+		
+		Params()
+		:	direction("direction","down")
+		{}
+	};
+	
+	/*virtual*/ BOOL handleMouseDown(S32 x, S32 y, MASK mask);
+	
+	/*virtual*/ BOOL handleMouseUp(S32 x, S32 y, MASK mask);
+	
+	/*virtual*/ void onMouseLeave(S32 x, S32 y, MASK mask);
+
+	boost::signals2::connection setClickDraggingCallback( const commit_signal_t::slot_type& cb );
+	
+	/* virtual*/ ~LLPullButton()
+	{
+		delete mClickDraggingSignal;
+	}
+	
+protected:
+	friend class LLUICtrlFactory;
+	// convert string name into direction vector
+	void setDirectionFromName(const std::string& name);
+	LLPullButton(const LLPullButton::Params& params);
+	
+	commit_signal_t* mClickDraggingSignal;	
+	LLVector2 mLastMouseDown;
+	LLVector2 mDraggingDirection;
+};
+
+/**
  * Web browser-like navigation bar.
  */ 
 class LLNavigationBar
@@ -95,8 +142,8 @@ private:
 	void fillSearchComboBox();
 
 	LLMenuGL*					mTeleportHistoryMenu;
-	LLButton*					mBtnBack;
-	LLButton*					mBtnForward;
+	LLPullButton*				mBtnBack;
+	LLPullButton*				mBtnForward;
 	LLButton*					mBtnHome;
 	LLSearchComboBox*			mSearchComboBox;
 	LLLocationInputCtrl*		mCmbLocation;