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 LLNoLeavesFilter::operator() (const LLView* const view, const viewList_t & children) const 
{
        return filterResult_t(!(view->getChildList()->size() == 0), TRUE);
}

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());
}

// LLViewQuery

LLViewQuery::LLViewQuery(): mPreFilters(), mPostFilters(), mSorterp() 
{
}

void LLViewQuery::addPreFilter(const LLQueryFilter* prefilter) { mPreFilters.push_back(prefilter); }

void LLViewQuery::addPostFilter(const LLQueryFilter* postfilter) {      mPostFilters.push_back(postfilter); }

const LLViewQuery::filterList_t & LLViewQuery::getPreFilters() const { return mPreFilters; }

const LLViewQuery::filterList_t & LLViewQuery::getPostFilters() const { return mPostFilters; }

void LLViewQuery::setSorter(const LLQuerySorter* sorterp) { mSorterp = sorterp; }
const LLQuerySorter* LLViewQuery::getSorter() const { return mSorterp; }

viewList_t LLViewQuery::run(LLView * view) const
{
        viewList_t result;

        filterResult_t pre = runFilters(view, viewList_t(), mPreFilters);
        if(!pre.first && !pre.second)
        {
                // skip post filters completely if we're not including ourselves or the children
                return result;
        }
        if(pre.second)
        {
                // run filters on children
                viewList_t filtered_children;
                filterChildren(view, filtered_children);
                filterResult_t post = runFilters(view, filtered_children, mPostFilters);
                if(pre.first && post.first)
                {
                        result.push_back(view);
                }
                if(post.second)
                {
                        result.insert(result.end(), filtered_children.begin(), filtered_children.end());
                }
        }
        else 
        {
                if(pre.first) 
                {
                        result.push_back(view);
                }
        }
        return result;
}

void LLViewQuery::filterChildren(LLView * view, viewList_t & filtered_children) const
{
        LLView::child_list_t views(*(view->getChildList()));
        (*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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