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diff --git a/indra/llui/lldockcontrol.h b/indra/llui/lldockcontrol.h
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+++ b/indra/llui/lldockcontrol.h
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+/** 
+ * @file lldockcontrol.h
+ * @brief Creates a panel of a specific kind for a toast.
+ *
+ * $LicenseInfo:firstyear=2003&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_DOCKCONTROL_H
+#define LL_DOCKCONTROL_H
+
+#include "llerror.h"
+#include "llview.h"
+#include "llfloater.h"
+#include "lluiimage.h"
+
+/**
+ * Provides services for docking of specified floater.
+ * This class should be used in case impossibility deriving from LLDockableFloater.
+ */
+class LLDockControl
+{
+public:
+	enum DocAt
+	{
+		TOP,
+		LEFT,
+		BOTTOM
+	};
+
+public:
+	// callback for a function getting a rect valid for control's position
+	typedef boost::function<void (LLRect& )> get_allowed_rect_callback_t;
+
+	LOG_CLASS(LLDockControl);
+	LLDockControl(LLView* dockWidget, LLFloater* dockableFloater,
+			const LLUIImagePtr& dockTongue, DocAt dockAt, get_allowed_rect_callback_t get_rect_callback = NULL);
+	virtual ~LLDockControl();
+
+public:
+	void on();
+	void off();
+	void forceRecalculatePosition();
+	void setDock(LLView* dockWidget);
+	LLView* getDock()
+	{
+		return mDockWidget;
+	}
+	void repositionDockable();
+	void drawToungue();
+	bool isDockVisible();
+
+	// gets a rect that bounds possible positions for a dockable control (EXT-1111)
+	void getAllowedRect(LLRect& rect);
+
+	S32 getTongueWidth() { return mDockTongue->getWidth(); }
+	S32 getTongueHeight() { return mDockTongue->getHeight(); }
+
+private:
+	virtual void moveDockable();
+private:
+	get_allowed_rect_callback_t mGetAllowedRectCallback;
+	bool mEnabled;
+	bool mRecalculateDocablePosition;
+	bool mDockWidgetVisible;
+	DocAt mDockAt;
+	LLView* mDockWidget;
+	LLRect mPrevDockRect;
+	LLRect mRootRect;
+	LLFloater* mDockableFloater;
+	LLUIImagePtr mDockTongue;
+	S32 mDockTongueX;
+	S32 mDockTongueY;
+};
+
+#endif /* LL_DOCKCONTROL_H */