137 lines
4.0 KiB
C++
137 lines
4.0 KiB
C++
/**
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* @file llviewquery.cpp
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* @brief Implementation of view query class.
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*
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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "llview.h"
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#include "lluictrl.h"
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#include "llviewquery.h"
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void LLQuerySorter::sort(LLView * parent, viewList_t &children) const {}
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filterResult_t LLLeavesFilter::operator() (const LLView* const view, const viewList_t & children) const
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{
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return filterResult_t(children.empty(), true);
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}
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filterResult_t LLRootsFilter::operator() (const LLView* const view, const viewList_t & children) const
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{
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return filterResult_t(true, false);
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}
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filterResult_t LLVisibleFilter::operator() (const LLView* const view, const viewList_t & children) const
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{
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return filterResult_t(view->getVisible(), view->getVisible());
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}
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filterResult_t LLEnabledFilter::operator() (const LLView* const view, const viewList_t & children) const
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{
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return filterResult_t(view->getEnabled(), view->getEnabled());
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}
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filterResult_t LLTabStopFilter::operator() (const LLView* const view, const viewList_t & children) const
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{
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return filterResult_t(view->isCtrl() && static_cast<const LLUICtrl*>(view)->hasTabStop(),
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view->canFocusChildren());
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}
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filterResult_t LLCtrlFilter::operator() (const LLView* const view, const viewList_t & children) const
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{
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return filterResult_t(view->isCtrl(),true);
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}
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//
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// LLViewQuery
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//
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viewList_t LLViewQuery::run(LLView* view) const
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{
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viewList_t result;
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// prefilter gets immediate children of view
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filterResult_t pre = runFilters(view, *view->getChildList(), mPreFilters);
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if(!pre.first && !pre.second)
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{
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// not including ourselves or the children
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// nothing more to do
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return result;
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}
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viewList_t filtered_children;
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filterResult_t post(true, true);
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if(pre.second)
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{
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// run filters on children
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filterChildren(view, filtered_children);
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// only run post filters if this element passed pre filters
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// so if you failed to pass the pre filter, you can't filter out children in post
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if (pre.first)
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{
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post = runFilters(view, filtered_children, mPostFilters);
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}
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}
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if(pre.first && post.first)
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{
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result.push_back(view);
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}
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if(pre.second && post.second)
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{
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result.insert(result.end(), filtered_children.begin(), filtered_children.end());
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}
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return result;
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}
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void LLViewQuery::filterChildren(LLView* parent_view, viewList_t & filtered_children) const
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{
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LLView::child_list_t views(*(parent_view->getChildList()));
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if (mSorterp)
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{
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mSorterp->sort(parent_view, views); // sort the children per the sorter
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}
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for(LLView::child_list_iter_t iter = views.begin();
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iter != views.end();
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iter++)
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{
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viewList_t indiv_children = this->run(*iter);
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filtered_children.splice(filtered_children.end(), indiv_children);
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}
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}
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filterResult_t LLViewQuery::runFilters(LLView * view, const viewList_t children, const filterList_t filters) const
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{
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filterResult_t result = filterResult_t(true, true);
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for(filterList_const_iter_t iter = filters.begin();
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iter != filters.end();
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iter++)
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{
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filterResult_t filtered = (**iter)(view, children);
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result.first = result.first && filtered.first;
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result.second = result.second && filtered.second;
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}
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return result;
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}
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