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Tidy up continuation algorithm and make it work for hidden profile change events 

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
pull/21833/head
Michael Telatynski 2020-06-04 13:10:45 +01:00
parent aec588dada
commit 6d81337d92
1 changed files with 29 additions and 35 deletions
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64
src/components/structures/MessagePanel.js
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@ -34,6 +34,30 @@ import IRCTimelineProfileResizer from "../views/elements/IRCTimelineProfileResiz
const CONTINUATION_MAX_INTERVAL = 5 * 60 * 1000; // 5 minutes
const continuedTypes = ['m.sticker', 'm.room.message'];
// check if there is a previous event and it has the same sender as this event
// and the types are the same/is in continuedTypes and the time between them is <= CONTINUATION_MAX_INTERVAL
function shouldFormContinuation(prevEvent, mxEvent) {
// sanity check inputs
if (!prevEvent || !prevEvent.sender || !mxEvent.sender) return false;
// check if within the max continuation period
if (mxEvent.getTs() - prevEvent.getTs() > CONTINUATION_MAX_INTERVAL) return false;
// Some events should appear as continuations from previous events of different types.
if (mxEvent.getType() !== prevEvent.getType() &&
(!continuedTypes.includes(mxEvent.getType()) ||
!continuedTypes.includes(prevEvent.getType()))) return false;
// Check if the sender is the same and hasn't changed their displayname/avatar between these events
if (mxEvent.sender.userId !== prevEvent.sender.userId ||
mxEvent.sender.name !== prevEvent.sender.name ||
mxEvent.sender.getMxcAvatarUrl() !== prevEvent.sender.getMxcAvatarUrl()) return false;
// if we don't have tile for previous event then it was shown by showHiddenEvents and has no SenderProfile
if (!haveTileForEvent(prevEvent)) return false;
return true;
}
const isMembershipChange = (e) => e.getType() === 'm.room.member' || e.getType() === 'm.room.third_party_invite';
/* (almost) stateless UI component which builds the event tiles in the room timeline.
@ -515,39 +539,6 @@ export default class MessagePanel extends React.Component {
const isEditing = this.props.editState &&
this.props.editState.getEvent().getId() === mxEv.getId();
// is this a continuation of the previous message?
let continuation = false;
// Some events should appear as continuations from previous events of
// different types.
const eventTypeContinues =
prevEvent !== null &&
continuedTypes.includes(mxEv.getType()) &&
continuedTypes.includes(prevEvent.getType());
// if there is a previous event and it has the same sender as this event
// and the types are the same/is in continuedTypes and the time between them is <= CONTINUATION_MAX_INTERVAL
if (prevEvent !== null && prevEvent.sender && mxEv.sender && mxEv.sender.userId === prevEvent.sender.userId &&
// if we don't have tile for previous event then it was shown by showHiddenEvents and has no SenderProfile
haveTileForEvent(prevEvent) && (mxEv.getType() === prevEvent.getType() || eventTypeContinues) &&
(mxEv.getTs() - prevEvent.getTs() <= CONTINUATION_MAX_INTERVAL)) {
continuation = true;
}
/*
// Work out if this is still a continuation, as we are now showing commands
// and /me messages with their own little avatar. The case of a change of
// event type (commands) is handled above, but we need to handle the /me
// messages seperately as they have a msgtype of 'm.emote' but are classed
// as normal messages
if (prevEvent !== null && prevEvent.sender && mxEv.sender
&& mxEv.sender.userId === prevEvent.sender.userId
&& mxEv.getType() == prevEvent.getType()
&& prevEvent.getContent().msgtype === 'm.emote') {
continuation = false;
}
*/
// local echoes have a fake date, which could even be yesterday. Treat them
// as 'today' for the date separators.
@ -559,12 +550,15 @@ export default class MessagePanel extends React.Component {
}
// do we need a date separator since the last event?
if (this._wantsDateSeparator(prevEvent, eventDate)) {
const wantsDateSeparator = this._wantsDateSeparator(prevEvent, eventDate);
if (wantsDateSeparator) {
const dateSeparator = <li key={ts1}><DateSeparator key={ts1} ts={ts1} /></li>;
ret.push(dateSeparator);
continuation = false;
}
// is this a continuation of the previous message?
const continuation = !wantsDateSeparator && shouldFormContinuation(prevEvent, mxEv);
const eventId = mxEv.getId();
const highlight = (eventId === this.props.highlightedEventId);