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diff --git a/indra/newview/llimfloater.h b/indra/newview/llimfloater.h
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+/** 
+ * @file llimfloater.h
+ * @brief LLIMFloater class definition
+ *
+ * $LicenseInfo:firstyear=2009&license=viewergpl$
+ * 
+ * Copyright (c) 2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_IMFLOATER_H
+#define LL_IMFLOATER_H
+
+#include "lldockablefloater.h"
+
+class LLLineEditor;
+class LLPanelChatControlPanel;
+class LLViewerTextEditor;
+
+
+/**
+ * Individual IM window that appears at the bottom of the screen,
+ * optionally "docked" to the bottom tray.
+ */
+class LLIMFloater : public LLDockableFloater
+{
+public:
+	LLIMFloater(const LLUUID& session_id);
+
+	virtual ~LLIMFloater();
+	
+	// LLView overrides
+	/*virtual*/ BOOL postBuild();
+	/*virtual*/ void setVisible(BOOL visible);
+
+	// LLFloater overrides
+	/*virtual*/ void setDocked(bool docked, bool pop_on_undock = true);
+
+	// Make IM conversion visible and update the message history
+	static LLIMFloater* show(const LLUUID& session_id);
+
+	// Toggle panel specified by session_id
+	// Returns true iff panel became visible
+	static bool toggle(const LLUUID& session_id);
+
+	// get new messages from LLIMModel
+	void updateMessages();
+	static void onSendMsg( LLUICtrl*, void*);
+	void sendMsg();
+
+	// callback for LLIMModel on new messages
+	// route to specific floater if it is visible
+	static void newIMCallback(const LLSD& data);
+
+	// called when docked floater's position has been set by chiclet
+	void setPositioned(bool b) { mPositioned = b; };
+
+	// handler for a CLOSE signal
+	void onClose();
+
+
+private:
+	
+	static void		onInputEditorFocusReceived( LLFocusableElement* caller, void* userdata );
+	static void		onInputEditorFocusLost(LLFocusableElement* caller, void* userdata);
+	static void		onInputEditorKeystroke(LLLineEditor* caller, void* userdata);
+	void			setTyping(BOOL typing);
+	void			onSlide();
+	static void*	createPanelIMControl(void* userdata);
+	static void*	createPanelGroupControl(void* userdata);
+	void focusChangeCallback();
+	void getEnabledRect(LLRect& rect);
+	
+	LLPanelChatControlPanel* mControlPanel;
+	LLUUID mSessionID;
+	S32 mLastMessageIndex;
+
+	// username of last user who added text to this conversation, used to
+	// suppress duplicate username divider bars
+	std::string mLastFromName;
+
+	EInstantMessage mDialog;
+	LLUUID mOtherParticipantUUID;
+	LLViewerTextEditor* mHistoryEditor;
+	LLLineEditor* mInputEditor;
+	bool mPositioned;
+};
+
+
+#endif  // LL_IMFLOATER_H