function beginResize()

in _dist/alertify/alertify.js [1849:1879]

• 28 lines of code
• 6 McCabe index (conditional complexity)

        function beginResize(event, instance) {
            if (!instance.isMaximized()) {
                var eventSrc;
                if (event.type === 'touchstart') {
                    event.preventDefault();
                    eventSrc = event.targetTouches[0];
                } else if (event.button === 0) {
                    eventSrc = event;
                }
                if (eventSrc) {
                    // allow custom `onresize` method
                    dispatchEvent('onresize', instance);
                    
                    resizable = instance;
                    handleOffset = instance.elements.resizeHandle.offsetHeight / 2;
                    var element = instance.elements.dialog;
                    addClass(element, classes.capture);
                    startingLeft = parseInt(element.style.left, 10);
                    element.style.height = element.offsetHeight + 'px';
                    element.style.minHeight = instance.elements.header.offsetHeight + instance.elements.footer.offsetHeight + 'px';
                    element.style.width = (startingWidth = element.offsetWidth) + 'px';

                    if (element.style.maxWidth !== 'none') {
                        element.style.minWidth = (minWidth = element.offsetWidth) + 'px';
                    }
                    element.style.maxWidth = 'none';
                    addClass(document.body, classes.noSelection);
                    return false;
                }
            }
        }