Fix expiring polls not being displayed as such in the WebUI #11835
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Good point (although honestly that's not something that should happen 😩), I'll look into that |
| @@ -32,8 +32,36 @@ class Poll extends ImmutablePureComponent { | |||
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| state = { | |||
| selected: {}, | |||
| expired: this.props.poll.get('expired') || (new Date(this.props.poll.get('expires_at'))).getTime() < this.props.intl.now(), | |||
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Set this to null.
Create _setupTimer method. Call this method from componentDidMount. Call this method from componentWillReceiveProps if nextProps.poll.get('expired') !== this.props.poll.get('expired') etc.
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Setting it to null and then changing it in componentDidMount would incur an useless extra render cycle for every poll.
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Well, realistically, there's no reason to store expired in state, for example RelativeTimestamp component stores current timestamp in the state, and then the render method takes care of calculating the difference. That's probably the cleanest approach.
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I'd say there's no reason to store the current timestamp either, tbh.
Changed it to not use the deprecated componentWillReceiveProps and refactor it, it's cleaner imho, and should not do useless renders. However, it will re-fire the timer each time a poll gets updated even if its expiration date does not change. This is infrequent and cheaper than a render, though.
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…#11835) * Fix expiring polls not being displayed as such in the WebUI * Reset expiration state and timer when a poll changes * Refactor timer logic in `_setupTimer`, only set expiration if props have changed * Refactor and do not use deprecated React lifecycles
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