Design thread list tiles according to mockups (#7078)

res/css/views/right_panel/_ThreadPanel.scss

@@ -21,13 +21,10 @@ limitations under the License.
     padding-right: 0;
 
     .mx_BaseCard_header {
-        padding: 6px 8px 6px 0;
-
         .mx_BaseCard_close,
         .mx_BaseCard_back {
             margin-top: 15px;
         }
-
         .mx_BaseCard_close {
             right: -8px;
         }
@@ -39,6 +36,7 @@ limitations under the License.
         display: flex;
         flex: 1;
         justify-content: space-between;
+        align-items: center;
 
         span:first-of-type {
             font-weight: 600;
@@ -49,7 +47,11 @@ limitations under the License.
 
         .mx_AccessibleButton {
             font-size: 12px;
-            color: $secondary-content;
+            color: $primary-content;
+        }
+
+        .mx_MessageActionBar_optionsButton {
+            position: relative;
         }
 
         .mx_ContextualMenu_wrapper {
@@ -178,6 +180,33 @@ limitations under the License.
         padding: 0 8px;
         box-sizing: border-box;
     }
+
+    .mx_ThreadPanel_dropdown {
+        padding: 4px 8px;
+        border-radius: 4px;
+        line-height: 1.5;
+        user-select: none;
+    }
+
+    .mx_ThreadPanel_dropdown:hover,
+    .mx_ThreadPanel_dropdown[aria-expanded=true] {
+        background: $quinary-content;
+    }
+
+    .mx_ThreadPanel_dropdown::before {
+        content: "";
+        width: 18px;
+        height: 18px;
+        background: currentColor;
+        mask-image: url("$(res)/img/feather-customised/chevron-down.svg");
+        mask-size: 100%;
+        mask-repeat: no-repeat;
+        float: right;
+    }
+
+    .mx_ThreadPanel_dropdown[aria-expanded=true]::before {
+        transform: rotate(180deg);
+    }
 }
 
 .mx_ThreadPanel_viewInRoom::before {

res/css/views/rooms/_EventTile.scss

@@ -687,6 +687,7 @@ $left-gutter: 64px;
         padding-left: 11px;
         padding-right: 15px;
     }
+}
 
 .mx_ThreadInfo_content {
     text-overflow: ellipsis;
@@ -710,6 +711,59 @@ $left-gutter: 64px;
     padding: 0 8px;
     white-space: nowrap;
 }
+
+.mx_EventTile[data-shape=thread_list] {
+    --topOffset: 24px;
+    --leftOffset: 46px;
+
+    margin: var(--topOffset) 0;
+    border-radius: 8px;
+
+    &:hover {
+        background-color: $system;
+    }
+
+    &::after {
+        content: "";
+        position: absolute;
+        left: var(--leftOffset);
+        right: 0;
+        height: 1px;
+        bottom: calc(-1 * var(--topOffset));
+        background-color: $quinary-content;
+    }
+
+    &:last-child {
+        &::after {
+            content: unset;
+        }
+        margin-bottom: 0;
+    }
+
+    &:first-child {
+        margin-top: 0;
+    }
+
+    padding-top: 0;
+
+    .mx_EventTile_avatar {
+        top: -4px;
+        left: 0;
+    }
+
+    .mx_SenderProfile {
+        margin-left: var(--leftOffset) !important;
+    }
+
+    .mx_EventTile_line {
+        padding-left: var(--leftOffset) !important;
+        padding-bottom: 0;
+    }
+    .mx_MessageTimestamp {
+        right: 0;
+        left: auto;
+        top: -23px;
+    }
 }
 
 .mx_ThreadView {

src/components/structures/ThreadPanel.tsx

@@ -167,7 +167,7 @@ export const ThreadPanelHeader = ({ filterOption, setFilterOption }: {
     </ContextMenu> : null;
     return <div className="mx_ThreadPanel__header">
         <span>{ _t("Threads") }</span>
-        <ContextMenuButton inputRef={button} isExpanded={menuDisplayed} onClick={() => menuDisplayed ? closeMenu() : openMenu()}>
+        <ContextMenuButton className="mx_ThreadPanel_dropdown" inputRef={button} isExpanded={menuDisplayed} onClick={() => menuDisplayed ? closeMenu() : openMenu()}>
             { `${_t('Show:')} ${value.label}` }
         </ContextMenuButton>
         { contextMenu }

src/components/structures/ThreadView.tsx

@@ -39,15 +39,8 @@ import EditorStateTransfer from '../../utils/EditorStateTransfer';
 import RoomContext, { TimelineRenderingType } from '../../contexts/RoomContext';
 import ContentMessages from '../../ContentMessages';
 import UploadBar from './UploadBar';
-import { ChevronFace, ContextMenuTooltipButton } from './ContextMenu';
 import { _t } from '../../languageHandler';
-import IconizedContextMenu, {
+import { ThreadListContextMenu } from '../views/context_menus/ThreadListContextMenu';
-    IconizedContextMenuOption,
-    IconizedContextMenuOptionList,
-} from '../views/context_menus/IconizedContextMenu';
-import { ButtonEvent } from '../views/elements/AccessibleButton';
-import { copyPlaintext } from '../../utils/strings';
-import { sleep } from 'matrix-js-sdk/src/utils';
 
 interface IProps {
     room: Room;
@@ -63,24 +56,8 @@ interface IState {
     thread?: Thread;
     editState?: EditorStateTransfer;
     replyToEvent?: MatrixEvent;
-    threadOptionsPosition: DOMRect | null;
-    copyingPhase: CopyingPhase;
 }
 
-enum CopyingPhase {
-    Idle,
-    Copying,
-    Failed,
-}
-
-const contextMenuBelow = (elementRect: DOMRect) => {
-    // align the context menu's icons with the icon which opened the context menu
-    const left = elementRect.left + window.pageXOffset + elementRect.width;
-    const top = elementRect.bottom + window.pageYOffset + 17;
-    const chevronFace = ChevronFace.None;
-    return { left, top, chevronFace };
-};
-
 @replaceableComponent("structures.ThreadView")
 export default class ThreadView extends React.Component<IProps, IState> {
     static contextType = RoomContext;
@@ -90,12 +67,8 @@ export default class ThreadView extends React.Component<IProps, IState> {
 
     constructor(props: IProps) {
         super(props);
-        this.state = {
+        this.state = {};
-            threadOptionsPosition: null,
-            copyingPhase: CopyingPhase.Idle,
-        };
     }
-
     public componentDidMount(): void {
         this.setupThread(this.props.mxEvent);
         this.dispatcherRef = dis.register(this.onAction);
@@ -210,95 +183,12 @@ export default class ThreadView extends React.Component<IProps, IState> {
         }
     };
 
-    private onThreadOptionsClick = (ev: ButtonEvent): void => {
-        if (this.isThreadOptionsVisible) {
-            this.closeThreadOptions();
-        } else {
-            const position = ev.currentTarget.getBoundingClientRect();
-            this.setState({
-                threadOptionsPosition: position,
-            });
-        }
-    };
-
-    private closeThreadOptions = (): void => {
-        this.setState({
-            threadOptionsPosition: null,
-        });
-    };
-
-    private get isThreadOptionsVisible(): boolean {
-        return !!this.state.threadOptionsPosition;
-    }
-
-    private viewInRoom = (evt: ButtonEvent): void => {
-        evt.preventDefault();
-        evt.stopPropagation();
-        dis.dispatch({
-            action: 'view_room',
-            event_id: this.props.mxEvent.getId(),
-            highlighted: true,
-            room_id: this.props.mxEvent.getRoomId(),
-        });
-        this.closeThreadOptions();
-    };
-
-    private copyLinkToThread = async (evt: ButtonEvent): Promise<void> => {
-        evt.preventDefault();
-        evt.stopPropagation();
-
-        const matrixToUrl = this.props.permalinkCreator.forEvent(this.props.mxEvent.getId());
-
-        this.setState({
-            copyingPhase: CopyingPhase.Copying,
-        });
-
-        const hasSuccessfullyCopied = await copyPlaintext(matrixToUrl);
-
-        if (hasSuccessfullyCopied) {
-            await sleep(500);
-        } else {
-            this.setState({ copyingPhase: CopyingPhase.Failed });
-            await sleep(2500);
-        }
-
-        this.setState({ copyingPhase: CopyingPhase.Idle });
-
-        if (hasSuccessfullyCopied) {
-            this.closeThreadOptions();
-        }
-    };
-
     private renderThreadViewHeader = (): JSX.Element => {
         return <div className="mx_ThreadPanel__header">
             <span>{ _t("Thread") }</span>
-            <ContextMenuTooltipButton
+            <ThreadListContextMenu
-                className="mx_ThreadPanel_button mx_ThreadPanel_OptionsButton"
+                mxEvent={this.props.mxEvent}
-                onClick={this.onThreadOptionsClick}
+                permalinkCreator={this.props.permalinkCreator} />
-                title={_t("Thread options")}
-                isExpanded={this.isThreadOptionsVisible}
-            />
-            { this.isThreadOptionsVisible && (<IconizedContextMenu
-                onFinished={this.closeThreadOptions}
-                className="mx_RoomTile_contextMenu"
-                compact
-                rightAligned
-                {...contextMenuBelow(this.state.threadOptionsPosition)}
-            >
-                <IconizedContextMenuOptionList>
-                    <IconizedContextMenuOption
-                        onClick={(e) => this.viewInRoom(e)}
-                        label={_t("View in room")}
-                        iconClassName="mx_ThreadPanel_viewInRoom"
-                    />
-                    <IconizedContextMenuOption
-                        onClick={(e) => this.copyLinkToThread(e)}
-                        label={_t("Copy link to thread")}
-                        iconClassName="mx_ThreadPanel_copyLinkToThread"
-                    />
-                </IconizedContextMenuOptionList>
-            </IconizedContextMenu>) }
-
         </div>;
     };
 

src/components/views/context_menus/ThreadListContextMenu.tsx

@@ -0,0 +1,103 @@
+/*
+Copyright 2021 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 React, { useCallback, useState } from "react";
+import { MatrixEvent } from "matrix-js-sdk/src";
+import { ButtonEvent } from "../elements/AccessibleButton";
+import dis from '../../../dispatcher/dispatcher';
+import { RoomPermalinkCreator } from "../../../utils/permalinks/Permalinks";
+import { copyPlaintext } from "../../../utils/strings";
+import { ChevronFace, ContextMenuTooltipButton } from "../../structures/ContextMenu";
+import { _t } from "../../../languageHandler";
+import IconizedContextMenu, { IconizedContextMenuOption, IconizedContextMenuOptionList } from "./IconizedContextMenu";
+
+interface IProps {
+    mxEvent: MatrixEvent;
+    permalinkCreator: RoomPermalinkCreator;
+}
+
+const contextMenuBelow = (elementRect: DOMRect) => {
+    // align the context menu's icons with the icon which opened the context menu
+    const left = elementRect.left + window.pageXOffset + elementRect.width;
+    const top = elementRect.bottom + window.pageYOffset + 17;
+    const chevronFace = ChevronFace.None;
+    return { left, top, chevronFace };
+};
+
+export const ThreadListContextMenu: React.FC<IProps> = ({ mxEvent, permalinkCreator }) => {
+    const [optionsPosition, setOptionsPosition] = useState(null);
+    const closeThreadOptions = useCallback(() => {
+        setOptionsPosition(null);
+    }, []);
+
+    const viewInRoom = useCallback((evt: ButtonEvent): void => {
+        evt.preventDefault();
+        evt.stopPropagation();
+        dis.dispatch({
+            action: 'view_room',
+            event_id: mxEvent.getId(),
+            highlighted: true,
+            room_id: mxEvent.getRoomId(),
+        });
+        closeThreadOptions();
+    }, [mxEvent, closeThreadOptions]);
+
+    const copyLinkToThread = useCallback(async (evt: ButtonEvent) => {
+        evt.preventDefault();
+        evt.stopPropagation();
+        const matrixToUrl = permalinkCreator.forEvent(mxEvent.getId());
+        await copyPlaintext(matrixToUrl);
+        closeThreadOptions();
+    }, [mxEvent, closeThreadOptions, permalinkCreator]);
+
+    const toggleOptionsMenu = useCallback((ev: ButtonEvent): void => {
+        if (!!optionsPosition) {
+            closeThreadOptions();
+        } else {
+            const position = ev.currentTarget.getBoundingClientRect();
+            setOptionsPosition(position);
+        }
+    }, [closeThreadOptions, optionsPosition]);
+
+    return <React.Fragment>
+        <ContextMenuTooltipButton
+            className="mx_MessageActionBar_maskButton mx_MessageActionBar_optionsButton"
+            onClick={toggleOptionsMenu}
+            title={_t("Thread options")}
+            isExpanded={!!optionsPosition}
+        />
+        { !!optionsPosition && (<IconizedContextMenu
+            onFinished={closeThreadOptions}
+            className="mx_RoomTile_contextMenu"
+            compact
+            rightAligned
+            {...contextMenuBelow(optionsPosition)}
+        >
+            <IconizedContextMenuOptionList>
+                <IconizedContextMenuOption
+                    onClick={(e) => viewInRoom(e)}
+                    label={_t("View in room")}
+                    iconClassName="mx_ThreadPanel_viewInRoom"
+                />
+                <IconizedContextMenuOption
+                    onClick={(e) => copyLinkToThread(e)}
+                    label={_t("Copy link to thread")}
+                    iconClassName="mx_ThreadPanel_copyLinkToThread"
+                />
+            </IconizedContextMenuOptionList>
+        </IconizedContextMenu>) }
+    </React.Fragment>;
+};

src/components/views/rooms/EventTile.tsx

@@ -64,6 +64,9 @@ import { MessagePreviewStore } from '../../../stores/room-list/MessagePreviewSto
 import { logger } from "matrix-js-sdk/src/logger";
 import { TimelineRenderingType } from "../../../contexts/RoomContext";
 import { MediaEventHelper } from "../../../utils/MediaEventHelper";
+import Toolbar from '../../../accessibility/Toolbar';
+import { RovingAccessibleTooltipButton } from '../../../accessibility/roving/RovingAccessibleTooltipButton';
+import { ThreadListContextMenu } from '../context_menus/ThreadListContextMenu';
 
 const eventTileTypes = {
     [EventType.RoomMessage]: 'messages.MessageEvent',
@@ -547,6 +550,43 @@ export default class EventTile extends React.Component<IProps, IState> {
         }
     };
 
+    private renderThreadLastMessagePreview(): JSX.Element | null {
+        if (!SettingsStore.getValue("feature_thread")) {
+            return null;
+        }
+
+        /**
+         * Accessing the threads value through the room due to a race condition
+         * that will be solved when there are proper backend support for threads
+         * We currently have no reliable way to discover than an event is a thread
+         * when we are at the sync stage
+         */
+        const room = MatrixClientPeg.get().getRoom(this.props.mxEvent.getRoomId());
+        const thread = room?.threads.get(this.props.mxEvent.getId());
+
+        if (!thread || thread.length === 0) {
+            return null;
+        }
+
+        const [lastEvent] = thread.events
+            .filter(event => event.isThreadRelation)
+            .slice(-1);
+        const threadMessagePreview = MessagePreviewStore.instance.generatePreviewForEvent(lastEvent);
+
+        if (!threadMessagePreview || !lastEvent.sender) {
+            return null;
+        }
+
+        return <>
+            <MemberAvatar member={lastEvent.sender} style={{ float: "left", width: "24px", height: "24px" }} />
+            <div className="mx_ThreadInfo_content">
+                <span className="mx_ThreadInfo_message-preview">
+                    { threadMessagePreview }
+                </span>
+            </div>
+        </>;
+    }
+
     private renderThreadInfo(): React.ReactNode {
         if (!SettingsStore.getValue("feature_thread")) {
             return null;
@@ -569,11 +609,6 @@ export default class EventTile extends React.Component<IProps, IState> {
             return null;
         }
 
-        const [lastEvent] = thread.events
-            .filter(event => event.isThreadRelation)
-            .slice(-1);
-        const threadMessagePreview = MessagePreviewStore.instance.generatePreviewForEvent(lastEvent);
-
         return (
             <div
                 className="mx_ThreadInfo"
@@ -589,14 +624,7 @@ export default class EventTile extends React.Component<IProps, IState> {
                         count: thread.length,
                     }) }
                 </span>
-                { (threadMessagePreview && lastEvent.sender) && <>
+                { this.renderThreadLastMessagePreview() }
-                    <MemberAvatar member={lastEvent.sender} width={24} height={24} />
-                    <div className="mx_ThreadInfo_content">
-                        <span className="mx_ThreadInfo_message-preview">
-                            { threadMessagePreview }
-                        </span>
-                    </div>
-                </> }
             </div>
         );
     }
@@ -1199,6 +1227,20 @@ export default class EventTile extends React.Component<IProps, IState> {
             msgOption = readAvatars;
         }
 
+        const replyChain = haveTileForEvent(this.props.mxEvent) &&
+                    ReplyChain.hasReply(this.props.mxEvent) ? (
+                <ReplyChain
+                    parentEv={this.props.mxEvent}
+                    onHeightChanged={this.props.onHeightChanged}
+                    ref={this.replyChain}
+                    forExport={this.props.forExport}
+                    permalinkCreator={this.props.permalinkCreator}
+                    layout={this.props.layout}
+                    alwaysShowTimestamps={this.props.alwaysShowTimestamps || this.state.hover}
+                    isQuoteExpanded={isQuoteExpanded}
+                    setQuoteExpanded={this.setQuoteExpanded}
+                />) : null;
+
         switch (this.props.tileShape) {
             case TileShape.Notif: {
                 const room = this.context.getRoom(this.props.mxEvent.getRoomId());
@@ -1235,19 +1277,6 @@ export default class EventTile extends React.Component<IProps, IState> {
                 ]);
             }
             case TileShape.Thread: {
-                const replyChain = haveTileForEvent(this.props.mxEvent) &&
-                    ReplyChain.hasReply(this.props.mxEvent) ? (
-                        <ReplyChain
-                            parentEv={this.props.mxEvent}
-                            onHeightChanged={this.props.onHeightChanged}
-                            ref={this.replyChain}
-                            forExport={this.props.forExport}
-                            permalinkCreator={this.props.permalinkCreator}
-                            layout={this.props.layout}
-                            alwaysShowTimestamps={this.props.alwaysShowTimestamps || this.state.hover}
-                            isQuoteExpanded={isQuoteExpanded}
-                            setQuoteExpanded={this.setQuoteExpanded}
-                        />) : null;
                 const room = this.context.getRoom(this.props.mxEvent.getRoomId());
                 return React.createElement(this.props.as || "li", {
                     "className": classes,
@@ -1288,6 +1317,63 @@ export default class EventTile extends React.Component<IProps, IState> {
                     reactionsRow,
                 ]);
             }
+            case TileShape.ThreadPanel: {
+                const isOwnEvent = this.props.mxEvent?.sender?.userId === MatrixClientPeg.get().getUserId();
+
+                // tab-index=-1 to allow it to be focusable but do not add tab stop for it, primarily for screen readers
+                return (
+                    React.createElement(this.props.as || "li", {
+                        "ref": this.ref,
+                        "className": classes,
+                        "tabIndex": -1,
+                        "aria-live": ariaLive,
+                        "aria-atomic": "true",
+                        "data-scroll-tokens": scrollToken,
+                        "data-layout": this.props.layout,
+                        "data-shape": this.props.tileShape,
+                        "data-self": isOwnEvent,
+                        "data-has-reply": !!replyChain,
+                        "onMouseEnter": () => this.setState({ hover: true }),
+                        "onMouseLeave": () => this.setState({ hover: false }),
+                        "onClick": () => dispatchShowThreadEvent(this.props.mxEvent),
+                    }, <>
+                        { sender }
+                        { avatar }
+                        <div className={lineClasses} key="mx_EventTile_line">
+                            { linkedTimestamp }
+                            { this.renderE2EPadlock() }
+                            { replyChain }
+                            <EventTileType ref={this.tile}
+                                mxEvent={this.props.mxEvent}
+                                forExport={this.props.forExport}
+                                replacingEventId={this.props.replacingEventId}
+                                editState={this.props.editState}
+                                highlights={this.props.highlights}
+                                highlightLink={this.props.highlightLink}
+                                showUrlPreview={this.props.showUrlPreview}
+                                permalinkCreator={this.props.permalinkCreator}
+                                onHeightChanged={this.props.onHeightChanged}
+                                callEventGrouper={this.props.callEventGrouper}
+                                tileShape={this.props.tileShape}
+                            />
+                            { keyRequestInfo }
+                            <Toolbar className="mx_MessageActionBar" aria-label={_t("Message Actions")} aria-live="off">
+                                <RovingAccessibleTooltipButton
+                                    className="mx_MessageActionBar_maskButton mx_MessageActionBar_threadButton"
+                                    title={_t("Thread")}
+                                    onClick={() => dispatchShowThreadEvent(this.props.mxEvent)}
+                                    key="thread"
+                                />
+                                <ThreadListContextMenu
+                                    mxEvent={this.props.mxEvent}
+                                    permalinkCreator={this.props.permalinkCreator} />
+                            </Toolbar>
+                            { this.renderThreadLastMessagePreview() }
+                        </div>
+                        { msgOption }
+                    </>)
+                );
+            }
             case TileShape.FileGrid: {
                 return React.createElement(this.props.as || "li", {
                     "className": classes,
@@ -1321,19 +1407,6 @@ export default class EventTile extends React.Component<IProps, IState> {
             }
 
             default: {
-                const replyChain = haveTileForEvent(this.props.mxEvent) &&
-                    ReplyChain.hasReply(this.props.mxEvent) ? (
-                        <ReplyChain
-                            parentEv={this.props.mxEvent}
-                            onHeightChanged={this.props.onHeightChanged}
-                            ref={this.replyChain}
-                            forExport={this.props.forExport}
-                            permalinkCreator={this.props.permalinkCreator}
-                            layout={this.props.layout}
-                            alwaysShowTimestamps={this.props.alwaysShowTimestamps || this.state.hover}
-                            isQuoteExpanded={isQuoteExpanded}
-                            setQuoteExpanded={this.setQuoteExpanded}
-                        />) : null;
                 const isOwnEvent = this.props.mxEvent?.sender?.userId === MatrixClientPeg.get().getUserId();
 
                 // tab-index=-1 to allow it to be focusable but do not add tab stop for it, primarily for screen readers

src/i18n/strings/en_EN.json

@@ -1571,6 +1571,8 @@
     "If your other sessions do not have the key for this message you will not be able to decrypt them.": "If your other sessions do not have the key for this message you will not be able to decrypt them.",
     "Key request sent.": "Key request sent.",
     "<requestLink>Re-request encryption keys</requestLink> from your other sessions.": "<requestLink>Re-request encryption keys</requestLink> from your other sessions.",
+    "Message Actions": "Message Actions",
+    "Thread": "Thread",
     "This message cannot be decrypted": "This message cannot be decrypted",
     "Encrypted by an unverified session": "Encrypted by an unverified session",
     "Unencrypted": "Unencrypted",
@@ -1989,10 +1991,8 @@
     "React": "React",
     "Edit": "Edit",
     "Reply": "Reply",
-    "Thread": "Thread",
     "Collapse quotes │ ⇧+click": "Collapse quotes │ ⇧+click",
     "Expand quotes │ ⇧+click": "Expand quotes │ ⇧+click",
-    "Message Actions": "Message Actions",
     "Download %(text)s": "Download %(text)s",
     "Error decrypting attachment": "Error decrypting attachment",
     "Decrypt %(text)s": "Decrypt %(text)s",
@@ -2733,6 +2733,8 @@
     "Move up": "Move up",
     "Move down": "Move down",
     "View Community": "View Community",
+    "Thread options": "Thread options",
+    "Copy link to thread": "Copy link to thread",
     "Unable to start audio streaming.": "Unable to start audio streaming.",
     "Failed to start livestream": "Failed to start livestream",
     "Start audio stream": "Start audio stream",
@@ -3006,8 +3008,6 @@
     "All threads": "All threads",
     "Shows all threads from current room": "Shows all threads from current room",
     "Show:": "Show:",
-    "Thread options": "Thread options",
-    "Copy link to thread": "Copy link to thread",
     "Tried to load a specific point in this room's timeline, but you do not have permission to view the message in question.": "Tried to load a specific point in this room's timeline, but you do not have permission to view the message in question.",
     "Tried to load a specific point in this room's timeline, but was unable to find it.": "Tried to load a specific point in this room's timeline, but was unable to find it.",
     "Failed to load timeline position": "Failed to load timeline position",

test/components/structures/__snapshots__/ThreadPanel-test.tsx.snap

@@ -8,6 +8,7 @@ exports[`ThreadPanel Header expect that All filter for ThreadPanelHeader properl
     Threads
   </span>
   <ContextMenuButton
+    className="mx_ThreadPanel_dropdown"
     inputRef={
       Object {
         "current": null,
@@ -29,6 +30,7 @@ exports[`ThreadPanel Header expect that My filter for ThreadPanelHeader properly
     Threads
   </span>
   <ContextMenuButton
+    className="mx_ThreadPanel_dropdown"
     inputRef={
       Object {
         "current": null,