fix: Make CopyToClipboard popup optimistic

src/copy-to-clipboard/__tests__/copy-to-clipboard.test.tsx

@@ -16,18 +16,25 @@ const defaultProps = {
 
 describe('CopyToClipboard', () => {
   const originalNavigatorClipboard = global.navigator.clipboard;
+  const originalNavigatorPermissions = global.navigator.permissions;
 
   beforeEach(() => {
     Object.assign(global.navigator, {
       clipboard: {
         writeText: (text: string) =>
           new Promise<void>((resolve, reject) => (text.includes('error') ? reject() : resolve())),
       },
+      permissions: {
+        query: jest.fn().mockResolvedValue({ state: 'granted' }),
+      },
     });
   });
 
   afterEach(() => {
-    Object.assign(global.navigator, { clipboard: originalNavigatorClipboard });
+    Object.assign(global.navigator, {
+      clipboard: originalNavigatorClipboard,
+      permissions: originalNavigatorPermissions,
+    });
   });
 
   test('renders a normal button with button text and aria-label and no text to copy', () => {
@@ -220,4 +227,60 @@ describe('CopyToClipboard', () => {
       });
     });
   });
+
+  describe('permissions API behavior', () => {
+    test('shows error state when clipboard-write permission is denied', async () => {
+      Object.assign(global.navigator, {
+        permissions: {
+          query: jest.fn().mockResolvedValue({ state: 'denied' }),
+        },
+      });
+
+      const { container } = render(<CopyToClipboard {...defaultProps} />);
+      const wrapper = createWrapper(container).findCopyToClipboard()!;
+
+      wrapper.findCopyButton().click();
+      await waitFor(() =>
+        expect(wrapper.findStatusText()!.getElement().textContent).toBe('Failed to copy to clipboard')
+      );
+    });
+
+    test('shows success state when clipboard-write permission is granted', async () => {
+      Object.assign(global.navigator, {
+        permissions: {
+          query: jest.fn().mockResolvedValue({ state: 'granted' }),
+        },
+      });
+
+      const { container } = render(<CopyToClipboard {...defaultProps} />);
+      const wrapper = createWrapper(container).findCopyToClipboard()!;
+
+      wrapper.findCopyButton().click();
+      await waitFor(() => expect(wrapper.findStatusText()!.getElement().textContent).toBe('Copied to clipboard'));
+    });
+
+    test('defaults to success state when permissions API is not available', async () => {
+      Object.assign(global.navigator, { permissions: undefined });
+
+      const { container } = render(<CopyToClipboard {...defaultProps} />);
+      const wrapper = createWrapper(container).findCopyToClipboard()!;
+
+      wrapper.findCopyButton().click();
+      await waitFor(() => expect(wrapper.findStatusText()!.getElement().textContent).toBe('Copied to clipboard'));
+    });
+
+    test('defaults to success state when permissions query fails', async () => {
+      Object.assign(global.navigator, {
+        permissions: {
+          query: jest.fn().mockRejectedValue(new Error('Permission query failed')),
+        },
+      });
+
+      const { container } = render(<CopyToClipboard {...defaultProps} />);
+      const wrapper = createWrapper(container).findCopyToClipboard()!;
+
+      wrapper.findCopyButton().click();
+      await waitFor(() => expect(wrapper.findStatusText()!.getElement().textContent).toBe('Copied to clipboard'));
+    });
+  });
 });

src/copy-to-clipboard/internal.tsx

@@ -1,6 +1,6 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0
-import React, { useState } from 'react';
+import React, { useEffect, useState } from 'react';
 import clsx from 'clsx';
 
 import InternalButton from '../button/internal';
@@ -29,8 +29,24 @@ export default function InternalCopyToClipboard({
   __internalRootRef,
   ...restProps
 }: InternalCopyToClipboardProps) {
-  const [status, setStatus] = useState<'pending' | 'success' | 'error'>('pending');
-  const [statusText, setStatusText] = useState('');
+  const [status, setStatus] = useState<'pending' | 'success' | 'error'>('success');
+  const [statusText, setStatusText] = useState(copySuccessText);
+
+  useEffect(() => {
+    if (navigator.permissions) {
+      navigator.permissions
+        .query({ name: 'clipboard-write' as PermissionName })
+        .then(result => {
+          if (result.state === 'denied') {
+            setStatus('error');
+            setStatusText(copyErrorText);
+          }
+        })
+        .catch(() => {
+          // Permissions API not supported or failed.
+        });
+    }
+  }, [copyErrorText]);
 
   const baseProps = getBaseProps(restProps);
   const onClick = () => {
@@ -41,8 +57,6 @@ export default function InternalCopyToClipboard({
       return;
     }
 
-    setStatus('pending');
-    setStatusText('');
     navigator.clipboard
       .writeText(textToCopy)
       .then(() => {