function updatePositions()

in TestApplications/Web/js/lib/components/c3-0.4.2/src/legend.js [117:176]
39 lines of code
19 McCabe index (conditional complexity)

    function updatePositions(textElement, id, index) {
        var reset = index === 0, isLast = index === targetIds.length - 1,
            box = $$.getTextRect(textElement.textContent, CLASS.legendItem),
            itemWidth = box.width + tileWidth + (isLast && !($$.isLegendRight || $$.isLegendInset) ? 0 : paddingRight),
            itemHeight = box.height + paddingTop,
            itemLength = $$.isLegendRight || $$.isLegendInset ? itemHeight : itemWidth,
            areaLength = $$.isLegendRight || $$.isLegendInset ? $$.getLegendHeight() : $$.getLegendWidth(),
            margin, maxLength;

        // MEMO: care about condifion of step, totalLength
        function updateValues(id, withoutStep) {
            if (!withoutStep) {
                margin = (areaLength - totalLength - itemLength) / 2;
                if (margin < posMin) {
                    margin = (areaLength - itemLength) / 2;
                    totalLength = 0;
                    step++;
                }
            }
            steps[id] = step;
            margins[step] = $$.isLegendInset ? 10 : margin;
            offsets[id] = totalLength;
            totalLength += itemLength;
        }

        if (reset) {
            totalLength = 0;
            step = 0;
            maxWidth = 0;
            maxHeight = 0;
        }

        if (config.legend_show && !$$.isLegendToShow(id)) {
            widths[id] = heights[id] = steps[id] = offsets[id] = 0;
            return;
        }

        widths[id] = itemWidth;
        heights[id] = itemHeight;

        if (!maxWidth || itemWidth >= maxWidth) { maxWidth = itemWidth; }
        if (!maxHeight || itemHeight >= maxHeight) { maxHeight = itemHeight; }
        maxLength = $$.isLegendRight || $$.isLegendInset ? maxHeight : maxWidth;

        if (config.legend_equally) {
            Object.keys(widths).forEach(function (id) { widths[id] = maxWidth; });
            Object.keys(heights).forEach(function (id) { heights[id] = maxHeight; });
            margin = (areaLength - maxLength * targetIds.length) / 2;
            if (margin < posMin) {
                totalLength = 0;
                step = 0;
                targetIds.forEach(function (id) { updateValues(id); });
            }
            else {
                updateValues(id, true);
            }
        } else {
            updateValues(id);
        }
    }