diff options
| author | James Cook <james@lindenlab.com> | 2007-01-02 08:33:20 +0000 |
|---|---|---|
| committer | James Cook <james@lindenlab.com> | 2007-01-02 08:33:20 +0000 |
| commit | 420b91db29485df39fd6e724e782c449158811cb (patch) | |
| tree | b471a94563af914d3ed3edd3e856d21cb1b69945 /indra/llui/llviewquery.h | |
Print done when done.
Diffstat (limited to 'indra/llui/llviewquery.h')
| -rw-r--r-- | indra/llui/llviewquery.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/indra/llui/llviewquery.h b/indra/llui/llviewquery.h new file mode 100644 index 0000000000..ba59965c59 --- /dev/null +++ b/indra/llui/llviewquery.h @@ -0,0 +1,89 @@ +/**
+ * @file llviewquery.h
+ * @brief Query algorithm for flattening and filtering the view hierarchy.
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#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
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