Function doextra

src/plot_api/plot_api.js:1428–1456

(attr, val, i)

    // val=null will delete the attribute
    // attr can be an array to set several at once (all to the same val)
    function doextra(attr, val, i) {
        if (Array.isArray(attr)) {
            attr.forEach(function (a) {
                doextra(a, val, i);
            });
            return;
        }
        // quit if explicitly setting this elsewhere
        if (attr in aobj || helpers.hasParent(aobj, attr)) return;

        var extraparam;
        if (attr.slice(0, 6) === 'LAYOUT') {
            extraparam = layoutNP(gd.layout, attr.replace('LAYOUT', ''));
        } else {
            var tracei = traces[i];
            var preGUI = fullLayout._tracePreGUI[getFullTrace(tracei)._fullInput.uid];
            extraparam = makeNP(preGUI, guiEditFlag)(data[tracei], attr);
        }

        if (!(attr in undoit)) {
            undoit[attr] = a0();
        }
        if (undoit[attr][i] === undefined) {
            undoit[attr][i] = undefinedToNull(extraparam.get());
        }
        if (val !== undefined) {
            extraparam.set(val);
        }
    }

    function allBins(binAttr) {
        return function (j) {