Imported existing code

indra/llui/llviewquery.cpp

@@ -0,0 +1,157 @@
+/** 
+ * @file llviewquery.cpp
+ * @brief Implementation of view query class.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, 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.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llview.h"
+#include "lluictrl.h"
+#include "llviewquery.h"
+
+void LLQuerySorter::operator() (LLView * parent, viewList_t &children) const {}
+
+filterResult_t LLLeavesFilter::operator() (const LLView* const view, const viewList_t & children) const 
+{
+	return filterResult_t(children.empty(), TRUE);
+}
+
+filterResult_t LLRootsFilter::operator() (const LLView* const view, const viewList_t & children) const 
+{
+	return filterResult_t(TRUE, FALSE);
+}
+
+filterResult_t LLVisibleFilter::operator() (const LLView* const view, const viewList_t & children) const 
+{
+	return filterResult_t(view->getVisible(), view->getVisible());
+}
+filterResult_t LLEnabledFilter::operator() (const LLView* const view, const viewList_t & children) const 
+{
+	return filterResult_t(view->getEnabled(), view->getEnabled());
+}
+filterResult_t LLTabStopFilter::operator() (const LLView* const view, const viewList_t & children) const 
+{
+	return filterResult_t(view->isCtrl() && static_cast<const LLUICtrl*>(view)->hasTabStop(),
+						view->canFocusChildren());
+}
+
+filterResult_t LLCtrlFilter::operator() (const LLView* const view, const viewList_t & children) const 
+{
+	return filterResult_t(view->isCtrl(),TRUE);
+}
+
+//
+// LLViewQuery
+//
+
+viewList_t LLViewQuery::run(LLView* view) const
+{
+	viewList_t result;
+
+	// prefilter gets immediate children of view
+	filterResult_t pre = runFilters(view, *view->getChildList(), mPreFilters);
+	if(!pre.first && !pre.second)
+	{
+		// not including ourselves or the children
+		// nothing more to do
+		return result;
+	}
+
+	viewList_t filtered_children;
+	filterResult_t post(TRUE, TRUE);
+	if(pre.second)
+	{
+		// run filters on children
+		filterChildren(view, filtered_children);
+		// only run post filters if this element passed pre filters
+		// so if you failed to pass the pre filter, you can't filter out children in post
+		if (pre.first)
+		{
+			post = runFilters(view, filtered_children, mPostFilters);
+		}
+	}
+
+	if(pre.first && post.first) 
+	{
+		result.push_back(view);
+	}
+
+	if(pre.second && post.second)
+	{
+		result.insert(result.end(), filtered_children.begin(), filtered_children.end());
+	}
+
+	return result;
+}
+
+void LLViewQuery::filterChildren(LLView * view, viewList_t & filtered_children) const
+{
+	LLView::child_list_t views(*(view->getChildList()));
+	if (mSorterp)
+	{
+		(*mSorterp)(view, views); // sort the children per the sorter
+	}
+	for(LLView::child_list_iter_t iter = views.begin();
+			iter != views.end();
+			iter++)
+		{
+			viewList_t indiv_children = this->run(*iter);
+			filtered_children.insert(filtered_children.end(), indiv_children.begin(), indiv_children.end());
+		}
+}
+
+filterResult_t LLViewQuery::runFilters(LLView * view, const viewList_t children, const filterList_t filters) const
+{
+	filterResult_t result = filterResult_t(TRUE, TRUE);
+	for(filterList_const_iter_t iter = filters.begin();
+		iter != filters.end();
+		iter++)
+	{
+		filterResult_t filtered = (**iter)(view, children);
+		result.first = result.first && filtered.first;
+		result.second = result.second && filtered.second;
+	}
+	return result;
+}
+
+class SortByTabOrder : public LLQuerySorter, public LLSingleton<SortByTabOrder>
+{
+	/*virtual*/ void operator() (LLView * parent, LLView::child_list_t &children) const 
+	{
+		children.sort(LLCompareByTabOrder(parent->getCtrlOrder()));
+	}
+};
+
+LLCtrlQuery::LLCtrlQuery() : 
+	LLViewQuery()
+{
+	setSorter(SortByTabOrder::getInstance());
+}
+