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diff --git a/indra/newview/llfloatereditdaycycle.h b/indra/newview/llfloatereditdaycycle.h
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+/** 
+ * @file llfloatereditdaycycle.h
+ * @brief Floater to create or edit a day cycle
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, 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_LLFLOATEREDITDAYCYCLE_H
+#define LL_LLFLOATEREDITDAYCYCLE_H
+
+#include "llfloater.h"
+
+#include "llwlparammanager.h" // for LLWLParamKey
+
+class LLCheckBoxCtrl;
+class LLComboBox;
+class LLLineEditor;
+class LLMultiSliderCtrl;
+class LLTimeCtrl;
+
+/**
+ * Floater for creating or editing a day cycle.
+ */
+class LLFloaterEditDayCycle : public LLFloater
+{
+	LOG_CLASS(LLFloaterEditDayCycle);
+
+public:
+	LLFloaterEditDayCycle(const LLSD &key);
+
+	/*virtual*/	BOOL	postBuild();
+	/*virtual*/ void	onOpen(const LLSD& key);
+	/*virtual*/ void	onClose(bool app_quitting);
+	/*virtual*/ void	draw();
+
+private:
+
+	/// sync the time slider with day cycle structure
+	void syncTimeSlider();
+
+	// 	makes sure key slider has what's in day cycle
+	void loadTrack();
+
+	/// makes sure day cycle data structure has what's in menu
+	void applyTrack();
+
+	/// refresh the sky presets combobox
+	void refreshSkyPresetsList();
+
+	/// refresh the day cycle combobox
+	void refreshDayCyclesList();
+
+	/// add a slider to the track
+	void addSliderKey(F32 time, LLWLParamKey keyframe);
+
+	void initCallbacks();
+	LLWLParamKey getSelectedDayCycle();
+	bool isNewDay() const;
+	void dumpTrack();
+	void enableEditing(bool enable);
+	void reset();
+	void saveRegionDayCycle();
+
+	void setApplyProgress(bool started);
+	bool getApplyProgress() const;
+
+	void onTimeSliderMoved();	/// time slider moved
+	void onKeyTimeMoved();		/// a key frame moved
+	void onKeyTimeChanged();	/// a key frame's time changed
+	void onKeyPresetChanged();	/// sky preset selected
+	void onAddKey();			/// new key added on slider
+	void onDeleteKey();			/// a key frame deleted
+
+	void onRegionSettingsChange();
+	void onRegionChange();
+	void onRegionSettingsApplied(bool success);
+	void onRegionInfoUpdate();
+
+	void onDayCycleNameEdited();
+	void onDayCycleSelected();
+	void onBtnSave();
+	void onBtnCancel();
+
+	bool onSaveAnswer(const LLSD& notification, const LLSD& response);
+	void onSaveConfirmed();
+
+	void onDayCycleListChange();
+	void onSkyPresetListChange();
+
+	static std::string getRegionName();
+
+	/// convenience class for holding keyframes mapped to sliders
+	struct SliderKey
+	{
+	public:
+		SliderKey(LLWLParamKey kf, F32 t) : keyframe(kf), time(t) {}
+		SliderKey() : keyframe(), time(0.f) {} // Don't use this default constructor
+
+		LLWLParamKey keyframe;
+		F32 time;
+	};
+
+	static const F32 sHoursPerDay;
+
+	LLLineEditor*		mDayCycleNameEditor;
+	LLComboBox*			mDayCyclesCombo;
+	LLMultiSliderCtrl*	mTimeSlider;
+	LLMultiSliderCtrl*	mKeysSlider;
+	LLComboBox*			mSkyPresetsCombo;
+	LLTimeCtrl*			mTimeCtrl;
+	LLCheckBoxCtrl*		mMakeDefaultCheckBox;
+	LLButton*			mSaveButton;
+
+	// map of sliders to parameters
+	std::map<std::string, SliderKey> mSliderToKey;
+};
+
+#endif // LL_LLFLOATEREDITDAYCYCLE_H