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/**
* @file llviewquery.cpp
* @brief Implementation of view query class.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llview.h"
#include "lluictrl.h"
#include "llviewquery.h"
void LLQuerySorter::sort(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* parent_view, viewList_t & filtered_children) const
{
LLView::child_list_t views(*(parent_view->getChildList()));
if (mSorterp)
{
mSorterp->sort(parent_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.splice(filtered_children.end(), indiv_children);
}
}
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;
}
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