Function addOneItem

src/components/legend/get_legend_data.js:20–38

(legendId, legendGroup, legendItem)

    var i, j;

    function addOneItem(legendId, legendGroup, legendItem) {
        if(opts.visible === false) return;
        if(hasMultipleLegends && legendId !== opts._id) return;

        // each '' legend group is treated as a separate group
        if(legendGroup === '' || !helpers.isGrouped(opts)) {
            // TODO: check this against fullData legendgroups?
            var uniqueGroup = '~~i' + lgroupi;
            lgroups.push(uniqueGroup);
            lgroupToTraces[uniqueGroup] = [legendItem];
            lgroupi++;
        } else if(lgroups.indexOf(legendGroup) === -1) {
            lgroups.push(legendGroup);
            hasOneNonBlankGroup = true;
            lgroupToTraces[legendGroup] = [legendItem];
        } else {
            lgroupToTraces[legendGroup].push(legendItem);
        }
    }

    // build an { legendgroup: [cd0, cd0], ... } object
    for(i = 0; i < calcdata.length; i++) {