momentum scrolling config;

Author: xobotyi

docs/API.md

@@ -7,6 +7,7 @@
     * `fallbackScrollbarWidth`: _(number)_ Number of pixels that will be treated as scrollbar width if automated scrollbar width detection will fail. _This parameter used on mobiles, because scrollbars there has an absolute positioning and can't be measured._ _(default: 20)_
     * `minimalThumbsSize`: _(number)_ Minimal size of thumb in pixels _(default: 30)_
     * `rtl`: _(boolean)_ Override the direction style parameter _(default: undefined)_
+    * `momentum`: _(boolean)_ Whether to use momentum scrolling on iOS _(default: true)_
     * `noScroll`: _(boolean)_ Disable both vertical and horizontal scrolling _(default: false)_
     * `noScrollY`: _(boolean)_ Disable vertical scrolling _(default: false)_
     * `noScrollX`: _(boolean)_ Disable horizontal scrolling _(default: false)_

src/index.js

@@ -63,6 +63,8 @@ export default class Scrollbar extends React.Component
         minimalThumbsSize:      PropTypes.number,
         fallbackScrollbarWidth: PropTypes.number,
 
+        rtl:           PropTypes.bool,
+        momentum:      PropTypes.bool,
         defaultStyles: PropTypes.bool,
 
         permanentScrollbars: PropTypes.bool,
@@ -593,7 +595,7 @@ export default class Scrollbar extends React.Component
                   minimalThumbsSize, fallbackScrollbarWidth, scrollDetectionThreshold,
 
                   // boolean props
-                  defaultStyles, noScroll, noScrollX, noScrollY, permanentScrollbars, permanentScrollbarX, permanentScrollbarY, rtl,
+                  defaultStyles, noScroll, noScrollX, noScrollY, permanentScrollbars, permanentScrollbarX, permanentScrollbarY, rtl, momentum = true,
 
                   // holder element props
                   tagName, children, style, className,
@@ -653,6 +655,7 @@ export default class Scrollbar extends React.Component
                   overflowY:     "scroll",
                   marginBottom:  -(browserScrollbarWidth || fallbackScrollbarWidth),
                   paddingBottom: (browserScrollbarWidth ? null : fallbackScrollbarWidth),
+                  ...(momentum && {WebkitOverflowScrolling: "touch"}),
               },
               trackVerticalStyles   = {
                   ...trackVerticalStyle,