1 files changed, 62 insertions, 0 deletions
diff --git a/FrontEnd/src/app/views/timeline-common/TimelinePagedPostListView.tsx b/FrontEnd/src/app/views/timeline-common/TimelinePagedPostListView.tsx
new file mode 100644
index 00000000..b91357dd
--- /dev/null
+++ b/FrontEnd/src/app/views/timeline-common/TimelinePagedPostListView.tsx
@@ -0,0 +1,62 @@
+import React from "react";
+
+import { HttpTimelinePostInfo } from "@/http/timeline";
+import TimelinePostListView from "./TimelinePostListView";
+
+export interface TimelinePagedPostListViewProps {
+  className?: string;
+  style?: React.CSSProperties;
+  top?: string | number;
+  posts: HttpTimelinePostInfo[];
+  onReload: () => void;
+}
+
+const TimelinePagedPostListView: React.FC<TimelinePagedPostListViewProps> = (
+  props
+) => {
+  const { className, style, top, posts, onReload } = props;
+
+  const [lastViewCount, setLastViewCount] = React.useState<number>(10);
+
+  const viewingPosts = React.useMemo(() => {
+    if (lastViewCount >= posts.length) {
+      return posts;
+    } else {
+      return posts.slice(-lastViewCount, -1);
+    }
+  }, [posts, lastViewCount]);
+
+  React.useEffect(() => {
+    if (lastViewCount < posts.length) {
+      const listener = (): void => {
+        if (window.scrollY === 0 && lastViewCount < posts.length) {
+          setLastViewCount(lastViewCount + 10);
+        }
+      };
+      window.addEventListener("scroll", listener);
+      return () => window.removeEventListener("scroll", listener);
+    }
+  }, [lastViewCount, posts]);
+
+  React.useEffect(() => {
+    if (lastViewCount !== 10) {
+      document
+        .getElementById(
+          `timeline-post-${posts[posts.length - (lastViewCount - 10)].id}`
+        )
+        ?.scrollIntoView(true);
+    }
+  }, [lastViewCount, posts]);
+
+  return (
+    <TimelinePostListView
+      className={className}
+      style={style}
+      top={top}
+      posts={viewingPosts}
+      onReload={onReload}
+    />
+  );
+};
+
+export default TimelinePagedPostListView;