Remember last MemberList search query per-room

src/components/views/rooms/MemberList.tsx

@@ -45,6 +45,8 @@ import BaseAvatar from '../avatars/BaseAvatar';
 import { throttle } from 'lodash';
 import SpaceStore from "../../../stores/SpaceStore";
 
+const getSearchQueryLSKey = (roomId: string) => `mx_MemberList_searchQuarry_${roomId}`;
+
 const INITIAL_LOAD_NUM_MEMBERS = 30;
 const INITIAL_LOAD_NUM_INVITED = 5;
 const SHOW_MORE_INCREMENT = 100;
@@ -171,6 +173,13 @@ export default class MemberList extends React.Component<IProps, IState> {
  }
 
  private getMembersState(members: Array<RoomMember>): IState {
+ let searchQuery;
+ try {
+ searchQuery = window.localStorage.getItem(getSearchQueryLSKey(this.props.roomId));
+ } catch (error) {
+ console.warn("Failed to get last the MemberList search query", error);
+ }
+
  // set the state after determining showPresence to make sure it's
  // taken into account while rendering
  return {
@@ -184,7 +193,7 @@ export default class MemberList extends React.Component<IProps, IState> {
  // in practice I find that a little constraining
  truncateAtJoined: INITIAL_LOAD_NUM_MEMBERS,
  truncateAtInvited: INITIAL_LOAD_NUM_INVITED,
- searchQuery: "",
+ searchQuery: searchQuery ?? "",
  };
  }
 
@@ -414,6 +423,12 @@ export default class MemberList extends React.Component<IProps, IState> {
  };
 
  private onSearchQueryChanged = (searchQuery: string): void => {
+ try {
+ window.localStorage.setItem(getSearchQueryLSKey(this.props.roomId), searchQuery);
+ } catch (error) {
+ console.warn("Failed to set the last MemberList search query", error);
+ }
+
  this.setState({
  searchQuery,
  filteredJoinedMembers: this.filterMembers(this.state.members, 'join', searchQuery),
@@ -554,7 +569,9 @@ export default class MemberList extends React.Component<IProps, IState> {
  <SearchBox
  className="mx_MemberList_query mx_textinput_icon mx_textinput_search"
  placeholder={_t('Filter room members')}
- onSearch={this.onSearchQueryChanged} />
+ onSearch={this.onSearchQueryChanged}
+ initialValue={this.state.searchQuery}
+ />
  );
 
  let previousPhase = RightPanelPhases.RoomSummary;