441 lines
17 KiB
TypeScript
441 lines
17 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import * as React from "react";
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import { createRef } from "react";
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import TagPanel from "./TagPanel";
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import CustomRoomTagPanel from "./CustomRoomTagPanel";
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import classNames from "classnames";
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import dis from "../../dispatcher/dispatcher";
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import { _t } from "../../languageHandler";
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import RoomList from "../views/rooms/RoomList";
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import { HEADER_HEIGHT } from "../views/rooms/RoomSublist";
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import { Action } from "../../dispatcher/actions";
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import UserMenu from "./UserMenu";
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import RoomSearch from "./RoomSearch";
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import RoomBreadcrumbs from "../views/rooms/RoomBreadcrumbs";
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import { BreadcrumbsStore } from "../../stores/BreadcrumbsStore";
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import { UPDATE_EVENT } from "../../stores/AsyncStore";
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import ResizeNotifier from "../../utils/ResizeNotifier";
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import SettingsStore from "../../settings/SettingsStore";
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import RoomListStore, { LISTS_UPDATE_EVENT } from "../../stores/room-list/RoomListStore";
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import {Key} from "../../Keyboard";
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import IndicatorScrollbar from "../structures/IndicatorScrollbar";
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import AccessibleTooltipButton from "../views/elements/AccessibleTooltipButton";
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import { OwnProfileStore } from "../../stores/OwnProfileStore";
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import { MatrixClientPeg } from "../../MatrixClientPeg";
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import RoomListNumResults from "../views/rooms/RoomListNumResults";
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import LeftPanelWidget from "./LeftPanelWidget";
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interface IProps {
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isMinimized: boolean;
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resizeNotifier: ResizeNotifier;
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}
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interface IState {
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showBreadcrumbs: boolean;
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showTagPanel: boolean;
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}
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// List of CSS classes which should be included in keyboard navigation within the room list
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const cssClasses = [
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"mx_RoomSearch_input",
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"mx_RoomSearch_minimizedHandle", // minimized <RoomSearch />
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"mx_RoomSublist_headerText",
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"mx_RoomTile",
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"mx_RoomSublist_showNButton",
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];
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export default class LeftPanel extends React.Component<IProps, IState> {
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private listContainerRef: React.RefObject<HTMLDivElement> = createRef();
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private tagPanelWatcherRef: string;
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private bgImageWatcherRef: string;
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private focusedElement = null;
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private isDoingStickyHeaders = false;
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constructor(props: IProps) {
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super(props);
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this.state = {
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showBreadcrumbs: BreadcrumbsStore.instance.visible,
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showTagPanel: SettingsStore.getValue('TagPanel.enableTagPanel'),
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};
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BreadcrumbsStore.instance.on(UPDATE_EVENT, this.onBreadcrumbsUpdate);
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RoomListStore.instance.on(LISTS_UPDATE_EVENT, this.onBreadcrumbsUpdate);
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OwnProfileStore.instance.on(UPDATE_EVENT, this.onBackgroundImageUpdate);
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this.bgImageWatcherRef = SettingsStore.watchSetting(
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"RoomList.backgroundImage", null, this.onBackgroundImageUpdate);
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this.tagPanelWatcherRef = SettingsStore.watchSetting("TagPanel.enableTagPanel", null, () => {
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this.setState({showTagPanel: SettingsStore.getValue("TagPanel.enableTagPanel")});
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});
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// We watch the middle panel because we don't actually get resized, the middle panel does.
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// We listen to the noisy channel to avoid choppy reaction times.
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this.props.resizeNotifier.on("middlePanelResizedNoisy", this.onResize);
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}
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public componentWillUnmount() {
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SettingsStore.unwatchSetting(this.tagPanelWatcherRef);
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SettingsStore.unwatchSetting(this.bgImageWatcherRef);
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BreadcrumbsStore.instance.off(UPDATE_EVENT, this.onBreadcrumbsUpdate);
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RoomListStore.instance.off(LISTS_UPDATE_EVENT, this.onBreadcrumbsUpdate);
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OwnProfileStore.instance.off(UPDATE_EVENT, this.onBackgroundImageUpdate);
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this.props.resizeNotifier.off("middlePanelResizedNoisy", this.onResize);
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}
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private onExplore = () => {
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dis.fire(Action.ViewRoomDirectory);
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};
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private onBreadcrumbsUpdate = () => {
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const newVal = BreadcrumbsStore.instance.visible;
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if (newVal !== this.state.showBreadcrumbs) {
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this.setState({showBreadcrumbs: newVal});
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// Update the sticky headers too as the breadcrumbs will be popping in or out.
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if (!this.listContainerRef.current) return; // ignore: no headers to sticky
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this.handleStickyHeaders(this.listContainerRef.current);
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}
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};
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private onBackgroundImageUpdate = () => {
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// Note: we do this in the LeftPanel as it uses this variable most prominently.
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const avatarSize = 32; // arbitrary
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let avatarUrl = OwnProfileStore.instance.getHttpAvatarUrl(avatarSize);
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const settingBgMxc = SettingsStore.getValue("RoomList.backgroundImage");
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if (settingBgMxc) {
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avatarUrl = MatrixClientPeg.get().mxcUrlToHttp(settingBgMxc, avatarSize, avatarSize);
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}
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const avatarUrlProp = `url(${avatarUrl})`;
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if (document.body.style.getPropertyValue("--avatar-url") !== avatarUrlProp) {
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document.body.style.setProperty("--avatar-url", avatarUrlProp);
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}
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};
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private handleStickyHeaders(list: HTMLDivElement) {
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if (this.isDoingStickyHeaders) return;
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this.isDoingStickyHeaders = true;
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window.requestAnimationFrame(() => {
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this.doStickyHeaders(list);
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this.isDoingStickyHeaders = false;
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});
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}
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private doStickyHeaders(list: HTMLDivElement) {
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const topEdge = list.scrollTop;
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const bottomEdge = list.offsetHeight + list.scrollTop;
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const sublists = list.querySelectorAll<HTMLDivElement>(".mx_RoomSublist");
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const headerRightMargin = 15; // calculated from margins and widths to align with non-sticky tiles
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const headerStickyWidth = list.clientWidth - headerRightMargin;
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// We track which styles we want on a target before making the changes to avoid
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// excessive layout updates.
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const targetStyles = new Map<HTMLDivElement, {
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stickyTop?: boolean;
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stickyBottom?: boolean;
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makeInvisible?: boolean;
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}>();
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let lastTopHeader;
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let firstBottomHeader;
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for (const sublist of sublists) {
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const header = sublist.querySelector<HTMLDivElement>(".mx_RoomSublist_stickable");
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header.style.removeProperty("display"); // always clear display:none first
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// When an element is <=40% off screen, make it take over
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const offScreenFactor = 0.4;
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const isOffTop = (sublist.offsetTop + (offScreenFactor * HEADER_HEIGHT)) <= topEdge;
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const isOffBottom = (sublist.offsetTop + (offScreenFactor * HEADER_HEIGHT)) >= bottomEdge;
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if (isOffTop || sublist === sublists[0]) {
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targetStyles.set(header, { stickyTop: true });
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if (lastTopHeader) {
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lastTopHeader.style.display = "none";
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targetStyles.set(lastTopHeader, { makeInvisible: true });
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}
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lastTopHeader = header;
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} else if (isOffBottom && !firstBottomHeader) {
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targetStyles.set(header, { stickyBottom: true });
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firstBottomHeader = header;
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} else {
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targetStyles.set(header, {}); // nothing == clear
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}
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}
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// Run over the style changes and make them reality. We check to see if we're about to
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// cause a no-op update, as adding/removing properties that are/aren't there cause
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// layout updates.
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for (const header of targetStyles.keys()) {
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const style = targetStyles.get(header);
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if (style.makeInvisible) {
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// we will have already removed the 'display: none', so add it back.
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header.style.display = "none";
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continue; // nothing else to do, even if sticky somehow
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}
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if (style.stickyTop) {
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if (!header.classList.contains("mx_RoomSublist_headerContainer_stickyTop")) {
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header.classList.add("mx_RoomSublist_headerContainer_stickyTop");
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}
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const newTop = `${list.parentElement.offsetTop}px`;
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if (header.style.top !== newTop) {
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header.style.top = newTop;
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}
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} else {
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if (header.classList.contains("mx_RoomSublist_headerContainer_stickyTop")) {
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header.classList.remove("mx_RoomSublist_headerContainer_stickyTop");
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}
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if (header.style.top) {
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header.style.removeProperty('top');
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}
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}
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if (style.stickyBottom) {
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if (!header.classList.contains("mx_RoomSublist_headerContainer_stickyBottom")) {
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header.classList.add("mx_RoomSublist_headerContainer_stickyBottom");
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}
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const offset = window.innerHeight - (list.parentElement.offsetTop + list.parentElement.offsetHeight);
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const newBottom = `${offset}px`;
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if (header.style.bottom !== newBottom) {
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header.style.bottom = newBottom;
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}
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} else {
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if (header.classList.contains("mx_RoomSublist_headerContainer_stickyBottom")) {
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header.classList.remove("mx_RoomSublist_headerContainer_stickyBottom");
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}
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if (header.style.bottom) {
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header.style.removeProperty('bottom');
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}
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}
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if (style.stickyTop || style.stickyBottom) {
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if (!header.classList.contains("mx_RoomSublist_headerContainer_sticky")) {
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header.classList.add("mx_RoomSublist_headerContainer_sticky");
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}
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const newWidth = `${headerStickyWidth}px`;
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if (header.style.width !== newWidth) {
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header.style.width = newWidth;
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}
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} else if (!style.stickyTop && !style.stickyBottom) {
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if (header.classList.contains("mx_RoomSublist_headerContainer_sticky")) {
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header.classList.remove("mx_RoomSublist_headerContainer_sticky");
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}
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if (header.style.width) {
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header.style.removeProperty('width');
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}
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}
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}
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// add appropriate sticky classes to wrapper so it has
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// the necessary top/bottom padding to put the sticky header in
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const listWrapper = list.parentElement; // .mx_LeftPanel_roomListWrapper
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if (lastTopHeader) {
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listWrapper.classList.add("mx_LeftPanel_roomListWrapper_stickyTop");
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} else {
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listWrapper.classList.remove("mx_LeftPanel_roomListWrapper_stickyTop");
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}
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if (firstBottomHeader) {
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listWrapper.classList.add("mx_LeftPanel_roomListWrapper_stickyBottom");
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} else {
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listWrapper.classList.remove("mx_LeftPanel_roomListWrapper_stickyBottom");
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}
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}
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private onScroll = (ev: React.MouseEvent<HTMLDivElement>) => {
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const list = ev.target as HTMLDivElement;
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this.handleStickyHeaders(list);
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};
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private onResize = () => {
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if (!this.listContainerRef.current) return; // ignore: no headers to sticky
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this.handleStickyHeaders(this.listContainerRef.current);
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};
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private onFocus = (ev: React.FocusEvent) => {
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this.focusedElement = ev.target;
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};
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private onBlur = () => {
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this.focusedElement = null;
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};
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private onKeyDown = (ev: React.KeyboardEvent) => {
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if (!this.focusedElement) return;
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switch (ev.key) {
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case Key.ARROW_UP:
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case Key.ARROW_DOWN:
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ev.stopPropagation();
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ev.preventDefault();
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this.onMoveFocus(ev.key === Key.ARROW_UP);
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break;
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}
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};
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private onEnter = () => {
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const firstRoom = this.listContainerRef.current.querySelector<HTMLDivElement>(".mx_RoomTile");
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if (firstRoom) {
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firstRoom.click();
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return true; // to get the field to clear
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}
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};
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private onMoveFocus = (up: boolean) => {
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let element = this.focusedElement;
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let descending = false; // are we currently descending or ascending through the DOM tree?
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let classes: DOMTokenList;
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do {
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const child = up ? element.lastElementChild : element.firstElementChild;
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const sibling = up ? element.previousElementSibling : element.nextElementSibling;
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if (descending) {
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if (child) {
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element = child;
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} else if (sibling) {
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element = sibling;
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} else {
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descending = false;
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element = element.parentElement;
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}
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} else {
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if (sibling) {
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element = sibling;
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descending = true;
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} else {
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element = element.parentElement;
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}
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}
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if (element) {
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classes = element.classList;
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}
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} while (element && !cssClasses.some(c => classes.contains(c)));
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if (element) {
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element.focus();
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this.focusedElement = element;
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}
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};
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private renderHeader(): React.ReactNode {
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return (
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<div className="mx_LeftPanel_userHeader">
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<UserMenu isMinimized={this.props.isMinimized} />
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</div>
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);
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}
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private renderBreadcrumbs(): React.ReactNode {
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if (this.state.showBreadcrumbs && !this.props.isMinimized) {
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return (
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<IndicatorScrollbar
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className="mx_LeftPanel_breadcrumbsContainer mx_AutoHideScrollbar"
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verticalScrollsHorizontally={true}
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// Firefox sometimes makes this element focusable due to
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// overflow:scroll;, so force it out of tab order.
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tabIndex={-1}
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>
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<RoomBreadcrumbs />
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</IndicatorScrollbar>
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);
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}
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}
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private renderSearchExplore(): React.ReactNode {
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return (
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<div
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className="mx_LeftPanel_filterContainer"
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onFocus={this.onFocus}
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onBlur={this.onBlur}
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onKeyDown={this.onKeyDown}
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>
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<RoomSearch
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isMinimized={this.props.isMinimized}
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onVerticalArrow={this.onKeyDown}
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onEnter={this.onEnter}
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/>
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<AccessibleTooltipButton
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className="mx_LeftPanel_exploreButton"
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onClick={this.onExplore}
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title={_t("Explore rooms")}
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/>
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</div>
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);
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}
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public render(): React.ReactNode {
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const tagPanel = !this.state.showTagPanel ? null : (
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<div className="mx_LeftPanel_tagPanelContainer">
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<TagPanel />
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{SettingsStore.getValue("feature_custom_tags") ? <CustomRoomTagPanel /> : null}
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</div>
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);
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const roomList = <RoomList
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onKeyDown={this.onKeyDown}
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resizeNotifier={null}
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collapsed={false}
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onFocus={this.onFocus}
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onBlur={this.onBlur}
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isMinimized={this.props.isMinimized}
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onResize={this.onResize}
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/>;
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const containerClasses = classNames({
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"mx_LeftPanel": true,
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"mx_LeftPanel_hasTagPanel": !!tagPanel,
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"mx_LeftPanel_minimized": this.props.isMinimized,
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});
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const roomListClasses = classNames(
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"mx_LeftPanel_actualRoomListContainer",
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"mx_AutoHideScrollbar",
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);
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return (
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<div className={containerClasses}>
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{tagPanel}
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<aside className="mx_LeftPanel_roomListContainer">
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{this.renderHeader()}
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{this.renderSearchExplore()}
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{this.renderBreadcrumbs()}
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<RoomListNumResults />
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<div className="mx_LeftPanel_roomListWrapper">
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<div
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className={roomListClasses}
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onScroll={this.onScroll}
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ref={this.listContainerRef}
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// Firefox sometimes makes this element focusable due to
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// overflow:scroll;, so force it out of tab order.
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tabIndex={-1}
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>
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{roomList}
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</div>
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</div>
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{ !this.props.isMinimized && <LeftPanelWidget onResize={this.onResize} /> }
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</aside>
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</div>
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);
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}
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}
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