99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/**
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* @file llcategory.h
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* @brief LLCategory class header file.
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*
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* $LicenseInfo:firstyear=2002&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_LLCATEGORY_H
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#define LL_LLCATEGORY_H
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Class LLCategory
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//
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// An instance of the LLCategory class represents a particular
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// category in a hierarchical classification system. For now, it is 4
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// levels deep with 255 (minus 1) possible values at each level. If a
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// non zero value is found at level 4, that is the leaf category,
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// otherwise, it is the first level that has a 0 in the next depth
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// level.
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//
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// To output the names of all top level categories, you could do the
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// following:
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//
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// S32 count = LLCategory::none.getSubCategoryCount();
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// for(S32 i = 0; i < count; i++)
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// {
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// LL_INFOS() << none.getSubCategory(i).lookupNmae() << LL_ENDL;
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// }
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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class LLMessageSystem;
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class LLCategory
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{
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public:
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// Nice default static const.
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static const LLCategory none;
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// construction. Since this is really a POD type, destruction,
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// copy, and assignment are handled by the compiler.
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LLCategory();
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explicit LLCategory(U32 value) { init(value); }
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// methods
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void init(U32 value);
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U32 getU32() const;
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S32 getSubCategoryCount() const;
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// This method will return a category that is the nth
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// subcategory. If you're already at the bottom of the hierarchy,
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// then the method will return a copy of this.
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LLCategory getSubCategory(U8 n) const;
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// This method will return the name of the leaf category type
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const char* lookupName() const;
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// This method will return the full hierarchy name in an easily
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// interpreted (TOP)|(SUB1)|(SUB2) format. *NOTE: not implemented
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// because we don't have anything but top level categories at the
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// moment.
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//const char* lookupFullName() const;
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// message serialization
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void packMessage(LLMessageSystem* msg) const;
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void unpackMessage(LLMessageSystem* msg, const char* block);
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void unpackMultiMessage(LLMessageSystem* msg, const char* block,
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S32 block_num);
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protected:
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enum
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{
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CATEGORY_TOP = 0,
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CATEGORY_DEPTH = 4,
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};
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U8 mData[CATEGORY_DEPTH];
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};
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#endif // LL_LLCATEGORY_H
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