message: Add messaging endpoint for room encryption status.
diff: @@ -366,6 +366,22 @@ function getWidgets(event, roomId) {
  sendResponse(event, widgetStateEvents);
  }
  +function getRoomEncState(event, roomId) {
  + const client = MatrixClientPeg.get();
  + if (!client) {
  + sendError(event, _t('You need to be logged in.'));
  + return;
  + }
  + const room = client.getRoom(roomId);
  + if (!room) {
  + sendError(event, _t('This room is not recognised.'));
  + return;
  + }
  + const roomIsEncrypted = MatrixClientPeg.get().isRoomEncrypted(roomId);
  +
  + sendResponse(event, roomIsEncrypted);
  +}
  +
  function setPlumbingState(event, roomId, status) {
  if (typeof status !== 'string') {
  throw new Error('Plumbing state status should be a string');
  @@ -593,6 +609,9 @@ const onMessage = function(event) {
  } else if (event.data.action === "get_widgets") {
  getWidgets(event, roomId);
  return;
  + } else if (event.data.action === "get_room_enc_state") {
  + getRoomEncState(event, roomId);
  + return;
  } else if (event.data.action === "can_send_event") {
  canSendEvent(event, roomId);
  return;
  