a11y: use useShell for global announcements

Composer/packages/client/src/pages/language-generation/table-view.tsx

@@ -17,7 +17,6 @@ import formatMessage from 'format-message';
 import { NeutralColors, FontSizes } from '@uifabric/fluent-theme';
 import { RouteComponentProps } from '@reach/router';
 import { LgTemplate } from '@bfc/shared';
-import { Async } from 'office-ui-fabric-react/lib/Utilities';
 
 import { StoreContext } from '../../store';
 import { increaseNameUtilNotExist } from '../../utils/lgUtil';
@@ -36,23 +35,13 @@ const TableView: React.FC<TableViewProps> = props => {
   const createLgTemplate = useRef(debounce(actions.createLgTemplate, 500)).current;
   const copyLgTemplate = useRef(debounce(actions.copyLgTemplate, 500)).current;
   const removeLgTemplate = useRef(debounce(actions.removeLgTemplate, 500)).current;
-  const setMessage = useRef(debounce(actions.setMessage, 500)).current;
   const [templates, setTemplates] = useState<LgTemplate[]>([]);
   const listRef = useRef(null);
 
   const activeDialog = dialogs.find(({ id }) => id === dialogId);
 
   const [focusedIndex, setFocusedIndex] = useState(0);
 
-  const _async = new Async();
-
-  const announce = (message: string) => {
-    setMessage(message);
-    _async.setTimeout(() => {
-      setMessage(undefined);
-    }, 2000);
-  };
-
   useEffect(() => {
     if (!file || isEmpty(file)) return;
 
@@ -123,15 +112,15 @@ const TableView: React.FC<TableViewProps> = props => {
           key: 'delete',
           name: formatMessage('Delete'),
           onClick: () => {
-            announce('item deleted');
+            actions.setMessage('item deleted');
             onRemoveTemplate(index);
           },
         },
         {
           key: 'copy',
           name: formatMessage('Make a copy'),
           onClick: () => {
-            announce('item copied');
+            actions.setMessage('item copied');
             onCopyTemplate(index);
           },
         },
@@ -257,7 +246,7 @@ const TableView: React.FC<TableViewProps> = props => {
           iconProps={{ iconName: 'CirclePlus' }}
           onClick={() => {
             onCreateNewTemplate();
-            announce('item added');
+            actions.setMessage('item added');
           }}
         >
           {formatMessage('New template')}

Composer/packages/client/src/shell/useShell.ts

@@ -174,6 +174,7 @@ export function useShell(source: EventSource): { api: ShellApi; data: ShellData
     redo: actions.redo,
     addCoachMarkRef: actions.onboardingAddCoachMarkRef,
     updateUserSettings: actions.updateUserSettings,
+    announce: actions.setMessage,
   };
 
   const currentDialog = useMemo(() => dialogs.find(d => d.id === dialogId), [dialogs, dialogId]);

Composer/packages/client/src/store/action/error.ts

@@ -1,6 +1,8 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
+import debounce from 'lodash/debounce';
+
 import { ActionCreator } from '../types';
 
 import { ActionTypes } from './../../constants';
@@ -12,9 +14,22 @@ export const setError: ActionCreator = ({ dispatch }, error) => {
   });
 };
 
-export const setMessage: ActionCreator = ({ dispatch }, message) => {
+const _setMessage = debounce((dispatch, message: string) => {
   dispatch({
     type: ActionTypes.SET_MESSAGE,
     payload: message,
   });
+
+  setTimeout(
+    () =>
+      dispatch({
+        type: ActionTypes.SET_MESSAGE,
+        payload: undefined,
+      }),
+    2000
+  );
+}, 500);
+
+export const setMessage: ActionCreator = ({ dispatch }, message) => {
+  _setMessage(dispatch, message);
 };

Composer/packages/extensions/adaptive-form/src/components/fields/ObjectArrayField.tsx

@@ -4,7 +4,7 @@
 /** @jsx jsx */
 import { jsx } from '@emotion/core';
 import React, { useState, useMemo, useRef } from 'react';
-import { FieldProps } from '@bfc/extension';
+import { FieldProps, useShellApi } from '@bfc/extension';
 import { DefaultButton } from 'office-ui-fabric-react/lib/Button';
 import { JSONSchema7 } from 'json-schema';
 import { IconButton } from 'office-ui-fabric-react/lib/Button';
@@ -39,6 +39,13 @@ const ObjectArrayField: React.FC<FieldProps<any[]>> = props => {
   const [newObject, setNewObject] = useState({});
   const { arrayItems, handleChange, addItem } = useArrayItems(value, onChange);
   const firstNewFieldRef: React.RefObject<ITextField> = useRef(null);
+  const { announce } = useShellApi().shellApi;
+
+  const END_OF_ROW_LABEL = formatMessage('press Enter to add this item or Tab to move to the next interactive element');
+
+  const INSIDE_ROW_LABEL = formatMessage(
+    'press Enter to add this name and advance to the next row, or press Tab to advance to the value field'
+  );
 
   const handleNewObjectChange = (property: string) => (_e: React.FormEvent, newValue?: string) => {
     setNewObject({ ...newObject, [property]: newValue });
@@ -54,6 +61,7 @@ const ObjectArrayField: React.FC<FieldProps<any[]>> = props => {
           return { ...obj, [key]: typeof serializeValue === 'function' ? serializeValue(value) : value };
         }, {});
 
+        announce(INSIDE_ROW_LABEL);
         addItem(formattedData);
         setNewObject({});
         firstNewFieldRef.current?.focus();
@@ -153,15 +161,7 @@ const ObjectArrayField: React.FC<FieldProps<any[]>> = props => {
                           value={newObject[property] || ''}
                           onChange={handleNewObjectChange(property)}
                           onKeyDown={handleKeyDown}
-                          ariaLabel={
-                            lastField
-                              ? formatMessage(
-                                  'press Enter to add this item or Tab to move to the next interactive element'
-                                )
-                              : formatMessage(
-                                  'press Enter to add this name and advance to the next row, or press Tab to advance to the value field'
-                                )
-                          }
+                          ariaLabel={lastField ? END_OF_ROW_LABEL : INSIDE_ROW_LABEL}
                           componentRef={index === 0 ? firstNewFieldRef : undefined}
                         />
                       </div>

Composer/packages/lib/shared/src/types/shell.ts

@@ -70,4 +70,5 @@ export interface ShellApi {
   redo: () => void;
   updateUserSettings: (settings: AllPartial<UserSettings>) => void;
   addSkillDialog: () => Promise<{ manifestUrl: string } | null>;
+  announce: (message: string) => void;
 }