Function appendButtonsToGroups

src/components/modebar/manage.js:327–337

(groups, buttons)

}

function appendButtonsToGroups(groups, buttons) {
    if(buttons.length) {
        if(Array.isArray(buttons[0])) {
            for(var i = 0; i < buttons.length; i++) {
                groups.push(buttons[i]);
            }
        } else groups.push(buttons);
    }

    return groups;
}

// fill in custom buttons referring to default mode bar buttons
function fillCustomButton(originalModeBarButtons) {