feat: Add cancel confirmation modal to Advanced editors in libraries [FC-0076] (#1672)

* Extracts the cancel confirmation modal as a new component.
* Adds the cancel confirmation modal to the Advanced editors in libraries.

src/editors/AdvancedEditor.test.tsx

@@ -4,6 +4,9 @@ import {
   render,
   initializeMocks,
   waitFor,
+  screen,
+  act,
+  fireEvent,
 } from '../testUtils';
 import AdvancedEditor from './AdvancedEditor';
 
@@ -17,7 +20,7 @@ describe('AdvancedEditor', () => {
     initializeMocks();
   });
 
-  it('should call onClose when receiving "cancel-clicked" message', () => {
+  it('should call onClose when receiving "cancel-clicked" message', async () => {
     render(<AdvancedEditor usageKey="test" onClose={onCloseMock} />);
 
     const messageEvent = new MessageEvent('message', {
@@ -28,8 +31,17 @@ describe('AdvancedEditor', () => {
       origin: getConfig().STUDIO_BASE_URL,
     });
 
-    window.dispatchEvent(messageEvent);
+    act(() => {
+      // Send cancel event
+      window.dispatchEvent(messageEvent);
+    });
 
+    // Expect open cancel confimation modal
+    expect(await screen.findByText(/Are you sure you want to exit the editor/)).toBeInTheDocument();
+    // Click on "OK"
+    const confirmButton = await screen.findByRole('button', { name: 'OK' });
+    fireEvent.click(confirmButton);
+    // Should call `onClose`
     expect(onCloseMock).toHaveBeenCalled();
   });
 

src/editors/AdvancedEditor.tsx

@@ -1,20 +1,24 @@
 import React, { useEffect } from 'react';
 import { getConfig } from '@edx/frontend-platform';
 import { useIntl } from '@edx/frontend-platform/i18n';
+import { useToggle } from '@openedx/paragon';
 
 import { LibraryBlock } from '../library-authoring/LibraryBlock';
 import { EditorModalWrapper } from './containers/EditorContainer';
 import { ToastContext } from '../generic/toast-context';
+
 import messages from './messages';
+import CancelConfirmModal from './containers/EditorContainer/components/CancelConfirmModal';
 
 interface AdvancedEditorProps {
   usageKey: string,
-  onClose: Function | null,
+  onClose: (() => void) | null,
 }
 
 const AdvancedEditor = ({ usageKey, onClose }: AdvancedEditorProps) => {
   const intl = useIntl();
   const { showToast } = React.useContext(ToastContext);
+  const [isCancelConfirmOpen, openCancelConfirmModal, closeCancelConfirmModal] = useToggle(false);
 
   useEffect(() => {
     const handleIframeMessage = (event) => {
@@ -25,9 +29,9 @@ const AdvancedEditor = ({ usageKey, onClose }: AdvancedEditorProps) => {
       if (event.data.type === 'xblock-event') {
         const { eventName, data } = event.data;
 
-        if (onClose && (eventName === 'cancel'
-          || (eventName === 'save' && data.state === 'end'))
-        ) {
+        if (eventName === 'cancel') {
+          openCancelConfirmModal();
+        } else if (onClose && eventName === 'save' && data.state === 'end') {
           onClose();
         } else if (eventName === 'error') {
           showToast(intl.formatMessage(messages.advancedEditorGenericError));
@@ -43,12 +47,19 @@ const AdvancedEditor = ({ usageKey, onClose }: AdvancedEditorProps) => {
   }, []);
 
   return (
-    <EditorModalWrapper onClose={onClose as () => void}>
-      <LibraryBlock
-        usageKey={usageKey}
-        view="studio_view"
+    <>
+      <EditorModalWrapper onClose={openCancelConfirmModal}>
+        <LibraryBlock
+          usageKey={usageKey}
+          view="studio_view"
+        />
+      </EditorModalWrapper>
+      <CancelConfirmModal
+        isOpen={isCancelConfirmOpen}
+        closeCancelConfirmModal={closeCancelConfirmModal}
+        onCloseEditor={onClose}
       />
-    </EditorModalWrapper>
+    </>
   );
 };
 

src/editors/containers/EditorContainer/components/CancelConfirmModal.tsx

@@ -0,0 +1,38 @@
+import { Button } from '@openedx/paragon';
+import { useIntl, FormattedMessage } from '@edx/frontend-platform/i18n';
+import BaseModal from '../../../sharedComponents/BaseModal';
+import messages from '../messages';
+
+interface CancelConfirmModalProps {
+  isOpen: boolean,
+  closeCancelConfirmModal: () => void,
+  onCloseEditor: (() => void) | null,
+}
+
+const CancelConfirmModal = ({
+  isOpen,
+  closeCancelConfirmModal,
+  onCloseEditor,
+}: CancelConfirmModalProps) => {
+  const intl = useIntl();
+  return (
+    <BaseModal
+      size="md"
+      confirmAction={(
+        <Button
+          variant="primary"
+          onClick={() => onCloseEditor?.()}
+        >
+          <FormattedMessage {...messages.okButtonLabel} />
+        </Button>
+      )}
+      isOpen={isOpen}
+      close={closeCancelConfirmModal}
+      title={intl.formatMessage(messages.cancelConfirmTitle)}
+    >
+      <FormattedMessage {...messages.cancelConfirmDescription} />
+    </BaseModal>
+  );
+};
+
+export default CancelConfirmModal;

src/editors/containers/EditorContainer/index.tsx

@@ -15,12 +15,12 @@ import { useIntl, FormattedMessage } from '@edx/frontend-platform/i18n';
 
 import { EditorComponent } from '../../EditorComponent';
 import { useEditorContext } from '../../EditorContext';
-import BaseModal from '../../sharedComponents/BaseModal';
 import TitleHeader from './components/TitleHeader';
 import * as hooks from './hooks';
 import messages from './messages';
 import './index.scss';
 import usePromptIfDirty from '../../../generic/promptIfDirty/usePromptIfDirty';
+import CancelConfirmModal from './components/CancelConfirmModal';
 
 interface WrapperProps {
   children: React.ReactNode;
@@ -118,29 +118,16 @@ const EditorContainer: React.FC<Props> = ({
           <FormattedMessage {...messages.contentSaveFailed} />
         </Toast>
       )}
-      <BaseModal
-        size="md"
-        confirmAction={(
-          <Button
-            variant="primary"
-            onClick={() => {
-              handleCancel();
-              if (returnFunction) {
-                closeCancelConfirmModal();
-              }
-            }}
-          >
-            <FormattedMessage {...messages.okButtonLabel} />
-          </Button>
-        )}
+      <CancelConfirmModal
         isOpen={isCancelConfirmOpen}
-        close={() => {
-          closeCancelConfirmModal();
+        closeCancelConfirmModal={closeCancelConfirmModal}
+        onCloseEditor={() => {
+          handleCancel();
+          if (returnFunction) {
+            closeCancelConfirmModal();
+          }
         }}
-        title={intl.formatMessage(messages.cancelConfirmTitle)}
-      >
-        <FormattedMessage {...messages.cancelConfirmDescription} />
-      </BaseModal>
+      />
       <ModalDialog.Header className="shadow-sm zindex-10">
         <div className="d-flex flex-row justify-content-between">
           <h2 className="h3 col pl-0">