From ad61f58644b3f0fac451dbc5b869471edcad0cf4 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 20 Feb 2021 22:45:07 +0800
Subject: ...

---
 FrontEnd/src/app/common.ts | 47 ++++++++--------------------------------------
 1 file changed, 8 insertions(+), 39 deletions(-)

(limited to 'FrontEnd/src/app/common.ts')

diff --git a/FrontEnd/src/app/common.ts b/FrontEnd/src/app/common.ts
index 681568bb..1a4f6dda 100644
--- a/FrontEnd/src/app/common.ts
+++ b/FrontEnd/src/app/common.ts
@@ -1,49 +1,18 @@
-import React from "react";
-import { Observable, Subject } from "rxjs";
 import { TFunction } from "i18next";
 
+export type BootstrapThemeColor =
+  | "primary"
+  | "secondary"
+  | "success"
+  | "danger"
+  | "warning"
+  | "info";
+
 // This error is thrown when ui goes wrong with bad logic.
 // Such as a variable should not be null, but it does.
 // This error should never occur. If it does, it indicates there is some logic bug in codes.
 export class UiLogicError extends Error {}
 
-export function useEventEmiiter(): [() => Observable<null>, () => void] {
-  const ref = React.useRef<Subject<null> | null>(null);
-
-  return React.useMemo(() => {
-    const getter = (): Subject<null> => {
-      if (ref.current == null) {
-        ref.current = new Subject<null>();
-      }
-      return ref.current;
-    };
-    const trigger = (): void => {
-      getter().next(null);
-    };
-    return [getter, trigger];
-  }, []);
-}
-
-export function useValueEventEmiiter<T>(): [
-  () => Observable<T>,
-  (value: T) => void
-] {
-  const ref = React.useRef<Subject<T> | null>(null);
-
-  return React.useMemo(() => {
-    const getter = (): Subject<T> => {
-      if (ref.current == null) {
-        ref.current = new Subject<T>();
-      }
-      return ref.current;
-    };
-    const trigger = (value: T): void => {
-      getter().next(value);
-    };
-    return [getter, trigger];
-  }, []);
-}
-
 export type I18nText =
   | string
   | { type: "custom"; value: string }
-- 
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