mirror of https://github.com/vector-im/riot-web
Merge pull request #2829 from matrix-org/travis/unread-button
Check if the message panel is at the end of the timeline on initpull/21833/head
commit
a0e3182e47
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@ -145,6 +145,7 @@ module.exports = React.createClass({
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// the end of the live timeline. It has the effect of hiding the
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// 'scroll to bottom' knob, among a couple of other things.
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atEndOfLiveTimeline: true,
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atEndOfLiveTimelineInit: false, // used by componentDidUpdate to avoid unnecessary checks
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showTopUnreadMessagesBar: false,
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@ -429,6 +430,18 @@ module.exports = React.createClass({
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roomView.addEventListener('dragend', this.onDragLeaveOrEnd);
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}
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}
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// Note: We check the ref here with a flag because componentDidMount, despite
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// documentation, does not define our messagePanel ref. It looks like our spinner
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// in render() prevents the ref from being set on first mount, so we try and
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// catch the messagePanel when it does mount. Because we only want the ref once,
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// we use a boolean flag to avoid duplicate work.
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if (this.refs.messagePanel && !this.state.atEndOfLiveTimelineInit) {
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this.setState({
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atEndOfLiveTimelineInit: true,
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atEndOfLiveTimeline: this.refs.messagePanel.isAtEndOfLiveTimeline(),
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});
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}
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},
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componentWillUnmount: function() {
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