llviewquery.cpp

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#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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