function keydownHandler()

in _dist/alertify/alertify.js [1339:1364]

• 20 lines of code
• 10 McCabe index (conditional complexity)

        function keydownHandler(event) {
            var instance = openDialogs[openDialogs.length - 1];
            var keyCode = event.keyCode;
            if (keyCode === keys.LEFT || keyCode === keys.RIGHT) {
                var buttons = instance.__internal.buttons;
                for (var x = 0; x < buttons.length; x += 1) {
                    if (document.activeElement === buttons[x].element) {
                        switch (keyCode) {
                        case keys.LEFT:
                            buttons[(x || buttons.length) - 1].element.focus();
                            return;
                        case keys.RIGHT:
                            buttons[(x + 1) % buttons.length].element.focus();
                            return;
                        }
                    }
                }
            }else if (keyCode < keys.F12 + 1 && keyCode > keys.F1 - 1 && usedKeys.indexOf(keyCode) > -1) {
                event.preventDefault();
                event.stopPropagation();
                triggerCallback(instance, function (button) {
                    return button.key === keyCode;
                });
                return false;
            }
        }