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Fix improper scrolldown button display issue.

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This fixes an intermittent issue where the scrolldown button
or "new messages below" button would display even when the messages
panel was scrolled to the very bottom. Furthermore, when new messages
arrived, the messages panel would not automatically scroll down to show
the new messages.

Fixes https://github.com/vector-im/vector-web/issues/805
This commit is contained in:
Andrew Johnson
2016-01-29 21:48:32 -05:00
parent fcf6afbe06
commit fe9d7d10b9
1 changed files with 2 additions and 2 deletions
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4
src/components/structures/ScrollPanel.js
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@@ -160,8 +160,8 @@ module.exports = React.createClass({
// content. So don't call it in render() cycles. // content. So don't call it in render() cycles.
isAtBottom: function() { isAtBottom: function() {
var sn = this._getScrollNode(); var sn = this._getScrollNode();
// + 1 here to avoid fractional pixel rounding errors // + 2 here to avoid fractional pixel rounding errors
return sn.scrollHeight - sn.scrollTop <= sn.clientHeight + 1; return sn.scrollHeight - sn.scrollTop <= sn.clientHeight + 2;
}, },
// check the scroll state and send out backfill requests if necessary. // check the scroll state and send out backfill requests if necessary.