Add pagination in room timeline

Signed-off-by: Ajay Bura <ajbura@gmail.com>

src/util/common.js

@@ -84,3 +84,13 @@ export function getUrlPrams(paramName) {
   const urlParams = new URLSearchParams(queryString);
   return urlParams.get(paramName);
 }
+
+export function getScrollInfo(target) {
+  const scroll = {};
+  scroll.top = Math.round(target.scrollTop);
+  scroll.height = Math.round(target.scrollHeight);
+  scroll.viewHeight = Math.round(target.offsetHeight);
+  scroll.bottom = Math.round(scroll.top + scroll.viewHeight);
+  scroll.isScrollable = scroll.height > scroll.viewHeight;
+  return scroll;
+}