Fix edit a reply in rich text editor

src/components/views/rooms/wysiwyg_composer/EditWysiwygComposer.tsx

@@ -44,9 +44,9 @@ interface EditWysiwygComposerProps {
 
 export function EditWysiwygComposer({ editorStateTransfer, className, ...props }: EditWysiwygComposerProps) {
     const initialContent = useInitialContent(editorStateTransfer);
-    const isReady = !editorStateTransfer || Boolean(initialContent);
+    const isReady = !editorStateTransfer || initialContent !== undefined;
 
-    const { editMessage, endEditing, onChange, isSaveDisabled } = useEditing(initialContent, editorStateTransfer);
+    const { editMessage, endEditing, onChange, isSaveDisabled } = useEditing(editorStateTransfer, initialContent);
 
     return isReady && <WysiwygComposer
         className={classNames("mx_EditWysiwygComposer", className)}

src/components/views/rooms/wysiwyg_composer/hooks/useEditing.ts

@@ -22,7 +22,7 @@ import EditorStateTransfer from "../../../../../utils/EditorStateTransfer";
 import { endEditing } from "../utils/editing";
 import { editMessage } from "../utils/message";
 
-export function useEditing(initialContent: string, editorStateTransfer: EditorStateTransfer) {
+export function useEditing(editorStateTransfer: EditorStateTransfer, initialContent?: string) {
     const roomContext = useRoomContext();
     const mxClient = useMatrixClientContext();
 
@@ -34,7 +34,7 @@ export function useEditing(initialContent: string, editorStateTransfer: EditorSt
     }, [initialContent]);
 
     const editMessageMemoized = useCallback(() =>
-        editMessage(content, { roomContext, mxClient, editorStateTransfer }),
+        content !== undefined && editMessage(content, { roomContext, mxClient, editorStateTransfer }),
     [content, roomContext, mxClient, editorStateTransfer],
     );
 

src/components/views/rooms/wysiwyg_composer/hooks/useInitialContent.ts

@@ -24,6 +24,10 @@ import { CommandPartCreator, Part } from "../../../../../editor/parts";
 import SettingsStore from "../../../../../settings/SettingsStore";
 import EditorStateTransfer from "../../../../../utils/EditorStateTransfer";
 
+function getFormattedContent(editorStateTransfer: EditorStateTransfer): string {
+    return editorStateTransfer.getEvent().getContent().formatted_body?.replace(/<mx-reply>.*<\/mx-reply>/, '') || '';
+}
+
 function parseEditorStateTransfer(
     editorStateTransfer: EditorStateTransfer,
     room: Room,
@@ -42,7 +46,7 @@ function parseEditorStateTransfer(
         // const restoredParts = this.restoreStoredEditorState(partCreator);
 
         if (editorStateTransfer.getEvent().getContent().format === 'org.matrix.custom.html') {
-            return editorStateTransfer.getEvent().getContent().formatted_body || "";
+            return getFormattedContent(editorStateTransfer);
         }
 
         parts = parseEvent(editorStateTransfer.getEvent(), partCreator, {
@@ -59,7 +63,7 @@ export function useInitialContent(editorStateTransfer: EditorStateTransfer) {
     const roomContext = useRoomContext();
     const mxClient = useMatrixClientContext();
 
-    return useMemo<string>(() => {
+    return useMemo<string | undefined>(() => {
         if (editorStateTransfer && roomContext.room) {
             return parseEditorStateTransfer(editorStateTransfer, roomContext.room, mxClient);
         }

test/components/views/rooms/wysiwyg_composer/EditWysiwygComposer-test.tsx

@@ -16,7 +16,7 @@ limitations under the License.
 
 import "@testing-library/jest-dom";
 import React from "react";
-import { fireEvent, render, screen, waitFor } from "@testing-library/react";
+import { act, fireEvent, render, screen, waitFor } from "@testing-library/react";
 
 import MatrixClientContext from "../../../../../src/contexts/MatrixClientContext";
 import RoomContext from "../../../../../src/contexts/RoomContext";
@@ -96,6 +96,53 @@ describe('EditWysiwygComposer', () => {
             await waitFor(() =>
                 expect(screen.getByRole('textbox')).toContainHTML(mockEvent.getContent()['body']));
         });
+
+        it('Should ignore when formatted_body is not filled', async () => {
+            // When
+            const mockEvent = mkEvent({
+                type: "m.room.message",
+                room: 'myfakeroom',
+                user: 'myfakeuser',
+                content: {
+                    "msgtype": "m.text",
+                    "body": "Replying to this",
+                    "format": "org.matrix.custom.html",
+                },
+                event: true,
+            });
+
+            const editorStateTransfer = new EditorStateTransfer(mockEvent);
+            customRender(false, editorStateTransfer);
+
+            // Then
+            await waitFor(() => expect(screen.getByRole('textbox')).toHaveAttribute('contentEditable', "true"));
+        });
+
+        it('Should strip <mx-reply> tag from initial content', async () => {
+            // When
+            const mockEvent = mkEvent({
+                type: "m.room.message",
+                room: 'myfakeroom',
+                user: 'myfakeuser',
+                content: {
+                    "msgtype": "m.text",
+                    "body": "Replying to this",
+                    "format": "org.matrix.custom.html",
+                    "formatted_body": '<mx-reply>Reply</mx-reply>My content',
+                },
+                event: true,
+            });
+
+            const editorStateTransfer = new EditorStateTransfer(mockEvent);
+            customRender(false, editorStateTransfer);
+            await waitFor(() => expect(screen.getByRole('textbox')).toHaveAttribute('contentEditable', "true"));
+
+            // Then
+            await waitFor(() => {
+                expect(screen.getByRole('textbox')).not.toContainHTML("<mx-reply>Reply</mx-reply>");
+                expect(screen.getByRole('textbox')).toContainHTML("My content");
+            });
+        });
     });
 
     describe('Edit and save actions', () => {
@@ -180,14 +227,16 @@ describe('EditWysiwygComposer', () => {
         expect(screen.getByRole('textbox')).not.toHaveFocus();
 
         // When we send an action that would cause us to get focus
-        defaultDispatcher.dispatch({
-            action: Action.FocusEditMessageComposer,
-            context: null,
-        });
-        // (Send a second event to exercise the clearTimeout logic)
-        defaultDispatcher.dispatch({
-            action: Action.FocusEditMessageComposer,
-            context: null,
+        act(() => {
+            defaultDispatcher.dispatch({
+                action: Action.FocusEditMessageComposer,
+                context: null,
+            });
+            // (Send a second event to exercise the clearTimeout logic)
+            defaultDispatcher.dispatch({
+                action: Action.FocusEditMessageComposer,
+                context: null,
+            });
         });
 
         // Wait for event dispatch to happen