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diff --git a/indra/newview/llinventoryfilter.h b/indra/newview/llinventoryfilter.h
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+/** 
+* @file llinventoryfilter.h
+* @brief Support for filtering your inventory to only display a subset of the
+* available items.
+*
+* $LicenseInfo:firstyear=2005&license=viewergpl$
+* 
+* Copyright (c) 2005-2009, 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 LLINVENTORYFILTER_H
+#define LLINVENTORYFILTER_H
+
+// lots of includes here
+#include "llinventorytype.h"
+#include "llpermissionsflags.h"		// PermissionsMask
+
+class LLFolderViewItem;
+
+class LLInventoryFilter
+{
+public:
+	typedef enum e_folder_show
+	{
+		SHOW_ALL_FOLDERS,
+		SHOW_NON_EMPTY_FOLDERS,
+		SHOW_NO_FOLDERS
+	} EFolderShow;
+
+	typedef enum e_filter_behavior
+	{
+		FILTER_NONE,				// nothing to do, already filtered
+		FILTER_RESTART,				// restart filtering from scratch
+		FILTER_LESS_RESTRICTIVE,	// existing filtered items will certainly pass this filter
+		FILTER_MORE_RESTRICTIVE		// if you didn't pass the previous filter, you definitely won't pass this one
+	} EFilterBehavior;
+
+	static const U32 SO_DATE = 1;
+	static const U32 SO_FOLDERS_BY_NAME = 2;
+	static const U32 SO_SYSTEM_FOLDERS_TO_TOP = 4;
+
+	LLInventoryFilter(const std::string& name);
+	virtual ~LLInventoryFilter();
+
+	void setFilterTypes(U64 types, BOOL filter_for_categories = FALSE); // if filter_for_categories is true, operate on folder preferred asset type
+	U32 getFilterTypes() const { return mFilterOps.mFilterTypes; }
+
+	void setFilterSubString(const std::string& string);
+	const std::string getFilterSubString(BOOL trim = FALSE);
+
+	void setFilterPermissions(PermissionMask perms);
+	PermissionMask getFilterPermissions() const { return mFilterOps.mPermissions; }
+
+	void setDateRange(time_t min_date, time_t max_date);
+	void setDateRangeLastLogoff(BOOL sl);
+	time_t getMinDate() const { return mFilterOps.mMinDate; }
+	time_t getMaxDate() const { return mFilterOps.mMaxDate; }
+
+	void setHoursAgo(U32 hours);
+	U32 getHoursAgo() const { return mFilterOps.mHoursAgo; }
+
+	void setShowFolderState( EFolderShow state);
+	EFolderShow getShowFolderState() { return mFilterOps.mShowFolderState; }
+
+	void setSortOrder(U32 order);
+	U32 getSortOrder() { return mOrder; }
+
+	BOOL check(LLFolderViewItem* item);
+	std::string::size_type getStringMatchOffset() const;
+	BOOL isActive();
+	BOOL isNotDefault();
+	BOOL isModified();
+	BOOL isModifiedAndClear();
+	BOOL isSinceLogoff();
+	void clearModified() { mModified = FALSE; mFilterBehavior = FILTER_NONE; }
+	const std::string getName() const { return mName; }
+	std::string getFilterText();
+
+	void setFilterCount(S32 count) { mFilterCount = count; }
+	S32 getFilterCount() { return mFilterCount; }
+	void decrementFilterCount() { mFilterCount--; }
+
+	void markDefault();
+	void resetDefault();
+
+	BOOL isFilterWith(LLInventoryType::EType t);
+
+	S32 getCurrentGeneration() const { return mFilterGeneration; }
+	S32 getMinRequiredGeneration() const { return mMinRequiredGeneration; }
+	S32 getMustPassGeneration() const { return mMustPassGeneration; }
+
+	//RN: this is public to allow system to externally force a global refilter
+	void setModified(EFilterBehavior behavior = FILTER_RESTART);
+
+	void toLLSD(LLSD& data);
+	void fromLLSD(LLSD& data);
+
+protected:
+	struct filter_ops
+	{
+		U64			mFilterTypes;
+		BOOL        mFilterForCategories;
+		time_t		mMinDate;
+		time_t		mMaxDate;
+		U32			mHoursAgo;
+		EFolderShow	mShowFolderState;
+		PermissionMask	mPermissions;
+	};
+	filter_ops		mFilterOps;
+	filter_ops		mDefaultFilterOps;
+	std::string::size_type	mSubStringMatchOffset;
+	std::string		mFilterSubString;
+	U32				mOrder;
+	const std::string	mName;
+	S32				mFilterGeneration;
+	S32				mMustPassGeneration;
+	S32				mMinRequiredGeneration;
+	S32				mFilterCount;
+	S32				mNextFilterGeneration;
+	EFilterBehavior mFilterBehavior;
+
+private:
+	U32 mLastLogoff;
+	BOOL mModified;
+	BOOL mNeedTextRebuild;
+	std::string mFilterText;
+};
+
+#endif