...

4 files changed, 92 insertions, 0 deletions

diff --git a/FrontEnd/src/components/hooks/index.ts b/FrontEnd/src/components/hooks/index.ts
new file mode 100644
index 00000000..3c9859bc
--- /dev/null
+++ b/FrontEnd/src/components/hooks/index.ts
@@ -0,0 +1,3 @@
+export { useMobile } from "./responsive";
+export { default as useClickOutside } from "./useClickOutside";
+export { default as useScrollToBottom } from "./useScrollToBottom";
diff --git a/FrontEnd/src/components/hooks/responsive.ts b/FrontEnd/src/components/hooks/responsive.ts
new file mode 100644
index 00000000..6bcce96c
--- /dev/null
+++ b/FrontEnd/src/components/hooks/responsive.ts
@@ -0,0 +1,7 @@
+import { useMediaQuery } from "react-responsive";
+
+import { breakpoints } from "../breakpoints";
+
+export function useMobile(): boolean {
+  return useMediaQuery({ maxWidth: breakpoints.sm });
+}
diff --git a/FrontEnd/src/components/hooks/useClickOutside.ts b/FrontEnd/src/components/hooks/useClickOutside.ts
new file mode 100644
index 00000000..828ce7e3
--- /dev/null
+++ b/FrontEnd/src/components/hooks/useClickOutside.ts
@@ -0,0 +1,38 @@
+import { useRef, useEffect } from "react";
+
+export default function useClickOutside(
+  element: HTMLElement | null | undefined,
+  onClickOutside: () => void,
+  nextTick?: boolean,
+): void {
+  const onClickOutsideRef = useRef<() => void>(onClickOutside);
+
+  useEffect(() => {
+    onClickOutsideRef.current = onClickOutside;
+  }, [onClickOutside]);
+
+  useEffect(() => {
+    if (element != null) {
+      const handler = (event: MouseEvent): void => {
+        let e: HTMLElement | null = event.target as HTMLElement;
+        while (e) {
+          if (e == element) {
+            return;
+          }
+          e = e.parentElement;
+        }
+        onClickOutsideRef.current();
+      };
+      if (nextTick) {
+        setTimeout(() => {
+          document.addEventListener("click", handler);
+        });
+      } else {
+        document.addEventListener("click", handler);
+      }
+      return () => {
+        document.removeEventListener("click", handler);
+      };
+    }
+  }, [element, nextTick]);
+}
diff --git a/FrontEnd/src/components/hooks/useScrollToBottom.ts b/FrontEnd/src/components/hooks/useScrollToBottom.ts
new file mode 100644
index 00000000..79fcda16
--- /dev/null
+++ b/FrontEnd/src/components/hooks/useScrollToBottom.ts
@@ -0,0 +1,44 @@
+import { useRef, useEffect } from "react";
+import { fromEvent, filter, throttleTime } from "rxjs";
+
+function useScrollToBottom(
+  handler: () => void,
+  enable = true,
+  option = {
+    maxOffset: 5,
+    throttle: 1000,
+  },
+): void {
+  const handlerRef = useRef<(() => void) | null>(null);
+
+  useEffect(() => {
+    handlerRef.current = handler;
+
+    return () => {
+      handlerRef.current = null;
+    };
+  }, [handler]);
+
+  useEffect(() => {
+    const subscription = fromEvent(window, "scroll")
+      .pipe(
+        filter(
+          () =>
+            window.scrollY >=
+            document.body.scrollHeight - window.innerHeight - option.maxOffset,
+        ),
+        throttleTime(option.throttle),
+      )
+      .subscribe(() => {
+        if (enable) {
+          handlerRef.current?.();
+        }
+      });
+
+    return () => {
+      subscription.unsubscribe();
+    };
+  }, [enable, option.maxOffset, option.throttle]);
+}
+
+export default useScrollToBottom;