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Fix read marker visibility for grouped events

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The recent "groupers" which extracted out timeline grouping logic forgot to
pass through the last event state for read marker computation. This causes the
read marker to become visible when e.g. returning to room if it was last placed
inside a grouped set of events (currently room creation and membership events).

Regressed by https://github.com/matrix-org/matrix-react-sdk/pull/4059
Related to https://github.com/vector-im/riot-web/issues/12338
This commit is contained in:
J. Ryan Stinnett
2020-04-02 15:07:50 +01:00
parent 6db51cf9aa
commit 86f39ee0ee
2 changed files with 209 additions and 118 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
src/components/structures/MessagePanel.js
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@ -838,14 +838,16 @@ class CreationGrouper {
// events that we include in the group but then eject out and place
// above the group.
this.ejectedEvents = [];
this.readMarker = panel._readMarkerForEvent(createEvent.getId());
this.readMarker = panel._readMarkerForEvent(
createEvent.getId(),
createEvent === lastShownEvent,
);
}
shouldGroup(ev) {
const panel = this.panel;
const createEvent = this.createEvent;
if (!panel._shouldShowEvent(ev)) {
this.readMarker = this.readMarker || panel._readMarkerForEvent(ev.getId());
return true;
}
if (panel._wantsDateSeparator(this.createEvent, ev.getDate())) {
@ -863,7 +865,10 @@ class CreationGrouper {
add(ev) {
const panel = this.panel;
this.readMarker = this.readMarker || panel._readMarkerForEvent(ev.getId());
this.readMarker = this.readMarker || panel._readMarkerForEvent(
ev.getId(),
ev === this.lastShownEvent,
);
if (!panel._shouldShowEvent(ev)) {
return;
}
@ -950,7 +955,10 @@ class MemberGrouper {
constructor(panel, ev, prevEvent, lastShownEvent) {
this.panel = panel;
this.readMarker = panel._readMarkerForEvent(ev.getId());
this.readMarker = panel._readMarkerForEvent(
ev.getId(),
ev === lastShownEvent,
);
this.events = [ev];
this.prevEvent = prevEvent;
this.lastShownEvent = lastShownEvent;
@ -971,7 +979,10 @@ class MemberGrouper {
const renderText = textForEvent(ev);
if (!renderText || renderText.trim().length === 0) return; // quietly ignore
}
this.readMarker = this.readMarker || this.panel._readMarkerForEvent(ev.getId());
this.readMarker = this.readMarker || this.panel._readMarkerForEvent(
ev.getId(),
ev === this.lastShownEvent,
);
this.events.push(ev);
}