Second Life viewer sources 1.13.2.12

1 files changed, 108 insertions, 0 deletions

diff --git a/linden/indra/llui/llviewquery.h b/linden/indra/llui/llviewquery.h
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+/** 

+ * @file llviewquery.h

+ * @brief Query algorithm for flattening and filtering the view hierarchy.

+ *

+ * Copyright (c) 2001-2007, Linden Research, Inc.

+ * 
+ * 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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.

+ */

+

+#ifndef LL_LLVIEWQUERY_H

+#define LL_LLVIEWQUERY_H

+

+#include <list> 

+

+#include "llmemory.h"

+

+class LLView;

+

+typedef std::list<LLView *>                     viewList_t;

+typedef std::pair<BOOL, BOOL>           filterResult_t;

+

+// Abstract base class for all filters.

+class LLQueryFilter : public LLRefCount

+{

+public:

+        virtual filterResult_t operator() (const LLView* const view, const viewList_t & children) const =0;

+};

+

+class LLQuerySorter : public LLRefCount

+{

+public:

+        virtual void operator() (LLView * parent, viewList_t &children) const;

+};

+

+class LLNoLeavesFilter : public LLQueryFilter, public LLSingleton<LLNoLeavesFilter>

+{

+        /*virtual*/ filterResult_t operator() (const LLView* const view, const viewList_t & children) const;

+};

+class LLVisibleFilter : public LLQueryFilter, public LLSingleton<LLVisibleFilter>

+{

+        /*virtual*/ filterResult_t operator() (const LLView* const view, const viewList_t & children) const;

+};

+class LLEnabledFilter : public LLQueryFilter, public LLSingleton<LLEnabledFilter>

+{

+        /*virtual*/ filterResult_t operator() (const LLView* const view, const viewList_t & children) const;

+};

+class LLTabStopFilter : public LLQueryFilter, public LLSingleton<LLTabStopFilter>

+{

+        /*virtual*/ filterResult_t operator() (const LLView* const view, const viewList_t & children) const;

+};

+

+// Algorithm for flattening

+class LLViewQuery

+{

+public:

+        typedef std::list<const LLQueryFilter*>         filterList_t;

+        typedef filterList_t::iterator                          filterList_iter_t;

+        typedef filterList_t::const_iterator            filterList_const_iter_t;

+

+        LLViewQuery();

+        virtual ~LLViewQuery() {}

+

+        void addPreFilter(const LLQueryFilter* prefilter);

+        void addPostFilter(const LLQueryFilter* postfilter);

+        const filterList_t & getPreFilters() const;

+        const filterList_t & getPostFilters() const;

+

+        void setSorter(const LLQuerySorter* sorter);

+        const LLQuerySorter* getSorter() const;

+

+        viewList_t run(LLView * view) const;

+        // syntactic sugar

+        viewList_t operator () (LLView * view) const { return run(view); }

+protected:

+        // override this method to provide iteration over other types of children

+        virtual void filterChildren(LLView * view, viewList_t & filtered_children) const;

+        filterResult_t runFilters(LLView * view, const viewList_t children, const filterList_t filters) const;

+protected:

+        filterList_t mPreFilters;

+        filterList_t mPostFilters;

+        const LLQuerySorter* mSorterp;

+};

+

+class LLCtrlQuery : public LLViewQuery

+{

+public:

+        LLCtrlQuery();

+};

+

+#endif