improve comments
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1 changed files with 8 additions and 9 deletions
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@ -1153,11 +1153,11 @@ const TimelinePanel = React.createClass({
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};
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// if allowEventsWithoutTiles is enabled, we keep track
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// of how many of the adjacent events were invisible (because no tile)
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// but should have the read receipt moved past, so
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// of how many of the adjacent events didn't have a tile
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// but should have the read receipt moved past them, so
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// we can include those once we find the last displayed (visible) event.
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// The counter is cleared when we ignore an event we don't want
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// to send a read receipt for (our own events, local echos)
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// The counter is not started for events we don't want
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// to send a read receipt for (our own events, local echos).
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let adjacentInvisibleEventCount = 0;
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// Use `liveEvents` here because we don't want the read marker or read
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// receipt to advance into pending events.
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@ -1167,15 +1167,14 @@ const TimelinePanel = React.createClass({
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const node = messagePanel.getNodeForEventId(ev.getId());
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const isInView = isNodeInView(node);
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// the event at i + adjacentInvisibleEventCount should
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// not be ignored, and it considered the first in view (at the bottom)
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// because i is the first one in view and the adjacent ones are invisible,
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// so return this without further ado.
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// when we've reached the first visible event, and the previous
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// events were all invisible (with the first one not being ignored),
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// return the index of the first invisible event.
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if (isInView && adjacentInvisibleEventCount !== 0) {
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return i + adjacentInvisibleEventCount;
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} else {
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if (node && !isInView) {
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// has node but not in view, so adjacent invisible events don't count
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// has node but not in view, so reset adjacent invisible events
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adjacentInvisibleEventCount = 0;
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}
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