{"version":3,"file":"perfect-scrollbar.min.js","sources":["../src/handlers/mouse-wheel.js","../src/update-geometry.js","../src/lib/css.js","../src/lib/dom.js","../src/lib/class-names.js","../src/process-scroll-diff.js","../src/lib/util.js","../src/handlers/drag-thumb.js","../src/lib/event-manager.js","../src/index.js","../src/handlers/click-rail.js","../src/handlers/keyboard.js","../src/handlers/touch.js"],"sourcesContent":["import * as CSS from '../lib/css';\r\nimport cls from '../lib/class-names';\r\nimport updateGeometry from '../update-geometry';\r\nimport { env } from '../lib/util';\r\n\r\nexport default function(i) {\r\n const element = i.element;\r\n\r\n let shouldPrevent = false;\r\n\r\n function shouldPreventDefault(deltaX, deltaY) {\r\n const roundedScrollTop = Math.floor(element.scrollTop);\r\n const isTop = element.scrollTop === 0;\r\n const isBottom =\r\n roundedScrollTop + element.offsetHeight === element.scrollHeight;\r\n const isLeft = element.scrollLeft === 0;\r\n const isRight =\r\n element.scrollLeft + element.offsetWidth === element.scrollWidth;\r\n\r\n let hitsBound;\r\n\r\n // pick axis with primary direction\r\n if (Math.abs(deltaY) > Math.abs(deltaX)) {\r\n hitsBound = isTop || isBottom;\r\n } else {\r\n hitsBound = isLeft || isRight;\r\n }\r\n\r\n return hitsBound ? !i.settings.wheelPropagation : true;\r\n }\r\n\r\n function getDeltaFromEvent(e) {\r\n let deltaX = e.deltaX;\r\n let deltaY = -1 * e.deltaY;\r\n\r\n if (typeof deltaX === 'undefined' || typeof deltaY === 'undefined') {\r\n // OS X Safari\r\n deltaX = (-1 * e.wheelDeltaX) / 6;\r\n deltaY = e.wheelDeltaY / 6;\r\n }\r\n\r\n if (e.deltaMode && e.deltaMode === 1) {\r\n // Firefox in deltaMode 1: Line scrolling\r\n deltaX *= 10;\r\n deltaY *= 10;\r\n }\r\n\r\n if (deltaX !== deltaX && deltaY !== deltaY /* NaN checks */) {\r\n // IE in some mouse drivers\r\n deltaX = 0;\r\n deltaY = e.wheelDelta;\r\n }\r\n\r\n if (e.shiftKey) {\r\n // reverse axis with shift key\r\n return [-deltaY, -deltaX];\r\n }\r\n return [deltaX, deltaY];\r\n }\r\n\r\n function shouldBeConsumedByChild(target, deltaX, deltaY) {\r\n // FIXME: this is a workaround for