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diff --git a/indra/newview/llpanelemojicomplete.h b/indra/newview/llpanelemojicomplete.h
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+/**
+* @file llpanelemojicomplete.h
+* @brief Header file for LLPanelEmojiComplete
+*
+* $LicenseInfo:firstyear=2014&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2014, 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
+* $/LicenseInfo$
+*/
+
+#pragma once
+
+#include "llfloater.h"
+#include "lluictrl.h"
+
+// ============================================================================
+// LLPanelEmojiComplete
+//
+
+class LLPanelEmojiComplete : public LLUICtrl
+{
+	friend class LLUICtrlFactory;
+public:
+	struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
+	{
+		Optional<bool>       autosize;
+		Optional<S32>        max_emoji,
+		                     padding;
+
+		Optional<LLUIImage*> selected_image;
+
+		Params();
+	};
+
+protected:
+	LLPanelEmojiComplete(const LLPanelEmojiComplete::Params&);
+public:
+	virtual ~LLPanelEmojiComplete();
+
+	void draw() override;
+	BOOL handleHover(S32 x, S32 y, MASK mask) override;
+	BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent) override;
+	BOOL handleMouseDown(S32 x, S32 y, MASK mask) override;
+	BOOL handleMouseUp(S32 x, S32 y, MASK mask) override;
+	void onCommit() override;
+	void reshape(S32 width, S32 height, BOOL called_from_parent) override;
+
+public:
+	size_t getEmojiCount() const { return mEmojis.size(); }
+	void   setEmojiHint(const std::string& hint);
+protected:
+	size_t posToIndex(S32 x, S32 y) const;
+	void select(size_t emoji_idx);
+	void selectNext();
+	void selectPrevious();
+	void setFont(const LLFontGL* fontp);
+	void updateConstraints();
+	void updateScrollPos();
+
+protected:
+	static constexpr auto npos = std::numeric_limits<size_t>::max();
+
+	bool            mAutoSize = false;
+	const LLFontGL* mFont;
+	U16             mEmojiWidth = 0;
+	size_t          mMaxVisible = 0;
+	S32             mPadding = 8;
+	LLRect          mRenderRect;
+	LLUIImagePtr	mSelectedImage;
+
+	LLWString       mEmojis;
+	U16             mVisibleEmojis = 0;
+	size_t          mFirstVisible = 0;
+	size_t          mScrollPos = 0;
+	size_t          mCurSelected = 0;
+	LLVector2       mLastHover;
+};
+
+// ============================================================================
+// LLFloaterEmojiComplete
+//
+
+class LLFloaterEmojiComplete : public LLFloater
+{
+public:
+	LLFloaterEmojiComplete(const LLSD& sdKey);
+
+public:
+	BOOL handleKey(KEY key, MASK mask, BOOL called_from_parent) override;
+	void onOpen(const LLSD& key) override;
+	BOOL postBuild() override;
+	void reshape(S32 width, S32 height, BOOL called_from_parent) override;
+
+protected:
+	LLPanelEmojiComplete* mEmojiCtrl = nullptr;
+	S32                   mEmojiCtrlHorz = 0;
+};
+
+// ============================================================================