Add permission check around clipboard access (#22781)

Co-authored-by: Jon Koops <jonkoops@gmail.com>

js/apps/admin-ui/public/locales/en/clients.json

@@ -317,6 +317,7 @@
   "copyInitialAccessToken": "Please copy and paste the initial access token before closing as it can not be retrieved later.",
   "copySuccess": "Successfully copied to clipboard!",
   "clipboardCopyError": "Error copying to clipboard.",
+  "clipboardCopyDenied": "Your browser is blocking access to the clipboard.",
   "copyToClipboard": "Copy to clipboard",
   "clientRegistration": "Client registration",
   "anonymousAccessPolicies": "Anonymous access polices",

js/apps/admin-ui/src/clients/scopes/CopyToClipboardButton.tsx

@@ -6,6 +6,7 @@ import {
 } from "@patternfly/react-core";
 
 import useSetTimeout from "../../utils/useSetTimeout";
+import useQueryPermission from "../../utils/useQueryPermission";
 
 enum CopyState {
   Ready,
@@ -27,32 +28,39 @@ export const CopyToClipboardButton = ({
 }: CopyToClipboardButtonProps) => {
   const { t } = useTranslation("clients");
   const setTimeout = useSetTimeout();
+  const permission = useQueryPermission("clipboard-write" as PermissionName);
+  const permissionDenied = permission?.state === "denied";
+  const [copyState, setCopyState] = useState(CopyState.Ready);
 
-  const [copy, setCopy] = useState(CopyState.Ready);
+  // Determine the message to use for the copy button.
+  const copyMessageKey = useMemo(() => {
+    if (permissionDenied) {
+      return "clipboardCopyDenied";
+    }
 
-  const copyMessage = useMemo(() => {
-    switch (copy) {
+    switch (copyState) {
       case CopyState.Ready:
-        return t("copyToClipboard");
+        return "copyToClipboard";
       case CopyState.Copied:
-        return t("copySuccess");
+        return "copySuccess";
       case CopyState.Error:
-        return t("clipboardCopyError");
+        return "clipboardCopyError";
     }
-  }, [copy]);
+  }, [permissionDenied, copyState]);
 
+  // Reset the message of the copy button after copying to the clipboard.
   useEffect(() => {
-    if (copy !== CopyState.Ready) {
-      return setTimeout(() => setCopy(CopyState.Ready), 1000);
+    if (copyState !== CopyState.Ready) {
+      return setTimeout(() => setCopyState(CopyState.Ready), 1000);
     }
-  }, [copy]);
+  }, [copyState, setTimeout]);
 
   const copyToClipboard = async (text: string) => {
     try {
       await navigator.clipboard.writeText(text);
-      setCopy(CopyState.Copied);
+      setCopyState(CopyState.Copied);
     } catch (error) {
-      setCopy(CopyState.Error);
+      setCopyState(CopyState.Error);
     }
   };
 
@@ -65,7 +73,7 @@ export const CopyToClipboardButton = ({
       exitDelay={600}
       variant={variant}
     >
-      {copyMessage}
+      {t(copyMessageKey)}
     </ClipboardCopyButton>
   );
 };

js/apps/admin-ui/src/utils/useQueryPermission.ts

@@ -0,0 +1,54 @@
+import { useState, useEffect } from "react";
+
+/** A 'plain' object version of the permission status. */
+export type PlainPermissionStatus = {
+  readonly name: string;
+  readonly state: PermissionState;
+};
+
+export default function useQueryPermission(
+  name: PermissionName,
+): PlainPermissionStatus | null {
+  const [status, setStatus] = useState<PermissionStatus | null>(null);
+  const [plainStatus, setPlainStatus] = useState<PlainPermissionStatus | null>(
+    null,
+  );
+
+  function updatePlainStatus(newStatus: PermissionStatus) {
+    setPlainStatus({
+      name: newStatus.name,
+      state: newStatus.state,
+    });
+  }
+
+  // Query the permission status when the name changes.
+  useEffect(() => {
+    setStatus(null);
+    setPlainStatus(null);
+
+    navigator.permissions.query({ name }).then((newStatus) => {
+      setStatus(newStatus);
+      updatePlainStatus(newStatus);
+    });
+  }, [name]);
+
+  // Update the 'plain' status when the permission status changes.
+  useEffect(() => {
+    if (!status) {
+      return;
+    }
+
+    function onStatusChange() {
+      if (!status) {
+        return;
+      }
+
+      updatePlainStatus(status);
+    }
+
+    status.addEventListener("change", onStatusChange);
+    return () => status.removeEventListener("change", onStatusChange);
+  }, [status]);
+
+  return plainStatus;
+}

js/apps/admin-ui/src/utils/useSetTimeout.ts

@@ -1,8 +1,8 @@
-import { useEffect, useRef } from "react";
+import { useEffect, useRef, useCallback } from "react";
 
 export default function useSetTimeout() {
   const didUnmountRef = useRef(false);
-  const { current: scheduledTimers } = useRef(new Set<number>());
+  const scheduledTimersRef = useRef(new Set<number>());
 
   useEffect(() => {
     didUnmountRef.current = false;
@@ -14,27 +14,27 @@ export default function useSetTimeout() {
   }, []);
 
   function clearAll() {
-    scheduledTimers.forEach((timer) => clearTimeout(timer));
-    scheduledTimers.clear();
+    scheduledTimersRef.current.forEach((timer) => clearTimeout(timer));
+    scheduledTimersRef.current.clear();
   }
 
-  return function scheduleTimeout(callback: () => void, delay: number) {
+  return useCallback((callback: () => void, delay: number) => {
     if (didUnmountRef.current) {
       throw new Error("Can't schedule a timeout on an unmounted component.");
     }
 
     const timer = Number(setTimeout(handleCallback, delay));
 
-    scheduledTimers.add(timer);
+    scheduledTimersRef.current.add(timer);
 
     function handleCallback() {
-      scheduledTimers.delete(timer);
+      scheduledTimersRef.current.delete(timer);
       callback();
     }
 
     return function cancelTimeout() {
       clearTimeout(timer);
-      scheduledTimers.delete(timer);
+      scheduledTimersRef.current.delete(timer);
     };
-  };
+  }, []);
 }