chore(touch): remove useless vars

idiotWu · Nov 17, 2017 · 222434c · 222434c
1 parent 768f80e
commit 222434c
Showing 1 changed file with 2 additions and 10 deletions.
diff --git a/src/events/touch.ts b/src/events/touch.ts
@@ -5,8 +5,6 @@ import {
   TouchRecord,
 } from '../utils/';
 
-let activeScrollbar: I.Scrollbar | null;
-
 export function touchHandler(scrollbar: I.Scrollbar) {
   const MIN_EAING_MOMENTUM = 50;
   const EASING_MULTIPLIER = /Android/.test(navigator.userAgent) ? 3 : 2;
@@ -35,18 +33,13 @@ export function touchHandler(scrollbar: I.Scrollbar) {
   });
 
   addEvent(container, 'touchmove', (evt: TouchEvent) => {
-    if (activeScrollbar && activeScrollbar !== scrollbar) return;
+    evt.preventDefault();
 
     touchRecord.update(evt);
 
     const { x, y } = touchRecord.getDelta();
 
-    scrollbar.addTransformableMomentum(x, y, evt, (willScroll) => {
-      if (willScroll) {
-        evt.preventDefault();
-        activeScrollbar = scrollbar;
-      }
-    });
+    scrollbar.addTransformableMomentum(x, y, evt);
   });
 
   addEvent(container, 'touchcancel touchend', (evt: TouchEvent) => {
@@ -74,6 +67,5 @@ export function touchHandler(scrollbar: I.Scrollbar) {
     }
 
     touchRecord.release(evt);
-    activeScrollbar = null;
   });
 }