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Simplify EventTile structure

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Only render MessageTimestamp to the DOM when a tile is hovered
This commit is contained in:
Germain Souquet 2021-05-20 15:26:02 +01:00
parent d362321706
commit 171539d42d
2 changed files with 61 additions and 50 deletions
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65
src/components/structures/MessagePanel.js
View file

@ -645,39 +645,36 @@ export default class MessagePanel extends React.Component {
// use txnId as key if available so that we don't remount during sending
ret.push(
<li
key={mxEv.getTxnId() || eventId}
ref={this._collectEventNode.bind(this, eventId)}
data-scroll-tokens={scrollToken}
>
<TileErrorBoundary mxEvent={mxEv}>
<EventTile
mxEvent={mxEv}
continuation={continuation}
isRedacted={mxEv.isRedacted()}
replacingEventId={mxEv.replacingEventId()}
editState={isEditing && this.props.editState}
onHeightChanged={this._onHeightChanged}
readReceipts={readReceipts}
readReceiptMap={this._readReceiptMap}
showUrlPreview={this.props.showUrlPreview}
checkUnmounting={this._isUnmounting}
eventSendStatus={mxEv.getAssociatedStatus()}
tileShape={this.props.tileShape}
isTwelveHour={this.props.isTwelveHour}
permalinkCreator={this.props.permalinkCreator}
last={last}
lastInSection={willWantDateSeparator}
lastSuccessful={isLastSuccessful}
isSelectedEvent={highlight}
getRelationsForEvent={this.props.getRelationsForEvent}
showReactions={this.props.showReactions}
layout={this.props.layout}
enableFlair={this.props.enableFlair}
showReadReceipts={this.props.showReadReceipts}
/>
</TileErrorBoundary>
</li>,
<TileErrorBoundary key={mxEv.getTxnId() || eventId} mxEvent={mxEv}>
<EventTile
as="li"
data-scroll-tokens={scrollToken}
ref={this._collectEventNode.bind(this, eventId)}
mxEvent={mxEv}
continuation={continuation}
isRedacted={mxEv.isRedacted()}
replacingEventId={mxEv.replacingEventId()}
editState={isEditing && this.props.editState}
onHeightChanged={this._onHeightChanged}
readReceipts={readReceipts}
readReceiptMap={this._readReceiptMap}
showUrlPreview={this.props.showUrlPreview}
checkUnmounting={this._isUnmounting}
eventSendStatus={mxEv.getAssociatedStatus()}
tileShape={this.props.tileShape}
isTwelveHour={this.props.isTwelveHour}
permalinkCreator={this.props.permalinkCreator}
last={last}
lastInSection={willWantDateSeparator}
lastSuccessful={isLastSuccessful}
isSelectedEvent={highlight}
getRelationsForEvent={this.props.getRelationsForEvent}
showReactions={this.props.showReactions}
layout={this.props.layout}
enableFlair={this.props.enableFlair}
showReadReceipts={this.props.showReadReceipts}
/>
</TileErrorBoundary>,
);
return ret;
@ -779,7 +776,7 @@ export default class MessagePanel extends React.Component {
}
_collectEventNode = (eventId, node) => {
this.eventNodes[eventId] = node;
this.eventNodes[eventId] = node?.ref?.current;
}
// once dynamic content in the events load, make the scrollPanel check the

46
src/components/views/rooms/EventTile.tsx
View file

@ -277,6 +277,9 @@ interface IProps {
// Helper to build permalinks for the room
permalinkCreator?: RoomPermalinkCreator;
// Symbol of the root node
as?: string
}
interface IState {
@ -291,6 +294,8 @@ interface IState {
previouslyRequestedKeys: boolean;
// The Relations model from the JS SDK for reactions to `mxEvent`
reactions: Relations;
hover: boolean;
}
@replaceableComponent("views.rooms.EventTile")
@ -322,6 +327,8 @@ export default class EventTile extends React.Component<IProps, IState> {
previouslyRequestedKeys: false,
// The Relations model from the JS SDK for reactions to `mxEvent`
reactions: this.getReactions(),
hover: false,
};
// don't do RR animations until we are mounted
@ -333,6 +340,8 @@ export default class EventTile extends React.Component<IProps, IState> {
// to determine if we've already subscribed and use a combination of other flags to find
// out if we should even be subscribed at all.
this.isListeningForReceipts = false;
this.ref = React.createRef();
}
/**
@ -960,7 +969,7 @@ export default class EventTile extends React.Component<IProps, IState> {
onFocusChange={this.onActionBarFocusChange}
/> : undefined;
const timestamp = this.props.mxEvent.getTs() ?
const timestamp = this.props.mxEvent.getTs() && this.state.hover ?
<MessageTimestamp showTwelveHour={this.props.isTwelveHour} ts={this.props.mxEvent.getTs()} /> : null;
const keyRequestHelpText =
@ -1131,11 +1140,20 @@ export default class EventTile extends React.Component<IProps, IState> {
// tab-index=-1 to allow it to be focusable but do not add tab stop for it, primarily for screen readers
return (
<div className={classes} tabIndex={-1} aria-live={ariaLive} aria-atomic="true">
{ ircTimestamp }
{ sender }
{ ircPadlock }
<div className="mx_EventTile_line">
React.createElement(this.props.as || "div", {
"ref": this.ref,
"className": classes,
"tabIndex": -1,
"aria-live": ariaLive,
"aria-atomic": "true",
"data-scroll-tokens": this.props["data-scroll-tokens"],
"onMouseEnter": () => this.setState({ hover: true }),
"onMouseLeave": () => this.setState({ hover: false }),
}, [
ircTimestamp,
sender,
ircPadlock,
<div className="mx_EventTile_line" key="mx_EventTile_line">
{ groupTimestamp }
{ groupPadlock }
{ thread }
@ -1152,16 +1170,12 @@ export default class EventTile extends React.Component<IProps, IState> {
{ keyRequestInfo }
{ reactionsRow }
{ actionBar }
</div>
{msgOption}
{
// The avatar goes after the event tile as it's absolutely positioned to be over the
// event tile line, so needs to be later in the DOM so it appears on top (this avoids
// the need for further z-indexing chaos)
}
{ avatar }
</div>
);
</div>,
msgOption,
avatar,
])
)
}
}
}