Add RTE keyboard navigation in editing (#9980)

Add Keyboard navigation in editing

src/components/views/rooms/wysiwyg_composer/utils/event.ts

@@ -0,0 +1,46 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { MatrixClient, MatrixEvent } from "matrix-js-sdk/src/matrix";
+
+import EditorStateTransfer from "../../../../../utils/EditorStateTransfer";
+import { IRoomState } from "../../../../structures/RoomView";
+
+// From EditMessageComposer private get events(): MatrixEvent[]
+export function getEventsFromEditorStateTransfer(
+    editorStateTransfer: EditorStateTransfer,
+    roomContext: IRoomState,
+    mxClient: MatrixClient,
+): MatrixEvent[] | undefined {
+    const liveTimelineEvents = roomContext.liveTimeline?.getEvents();
+    if (!liveTimelineEvents) {
+        return;
+    }
+
+    const roomId = editorStateTransfer.getEvent().getRoomId();
+    if (!roomId) {
+        return;
+    }
+
+    const room = mxClient.getRoom(roomId);
+    if (!room) {
+        return;
+    }
+
+    const pendingEvents = room.getPendingEvents();
+    const isInThread = Boolean(editorStateTransfer.getEvent().getThread());
+    return liveTimelineEvents.concat(isInThread ? [] : pendingEvents);
+}