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/**
* @file llviewquery.cpp
* @brief Implementation of view query class.
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2008, 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());
}
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