MaterialMenu.prototype.handleForKeyboardEvent_ = function()

in website/css/mdl/material.js [1340:1353]

• 14 lines of code
• 9 McCabe index (conditional complexity)

MaterialMenu.prototype.handleForKeyboardEvent_ = function (evt) {
    if (this.element_ && this.container_ && this.forElement_) {
        var items = this.element_.querySelectorAll('.' + this.CssClasses_.ITEM + ':not([disabled])');
        if (items && items.length > 0 && this.container_.classList.contains(this.CssClasses_.IS_VISIBLE)) {
            if (evt.keyCode === this.Keycodes_.UP_ARROW) {
                evt.preventDefault();
                items[items.length - 1].focus();
            } else if (evt.keyCode === this.Keycodes_.DOWN_ARROW) {
                evt.preventDefault();
                items[0].focus();
            }
        }
    }
};