hometown/app/javascript/mastodon/components/poll.js

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import React from 'react';
import PropTypes from 'prop-types';
import ImmutablePropTypes from 'react-immutable-proptypes';
import ImmutablePureComponent from 'react-immutable-pure-component';
import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
import classNames from 'classnames';
import { vote, fetchPoll } from 'mastodon/actions/polls';
import Motion from 'mastodon/features/ui/util/optional_motion';
import spring from 'react-motion/lib/spring';
import escapeTextContentForBrowser from 'escape-html';
import emojify from 'mastodon/features/emoji/emoji';
import RelativeTimestamp from './relative_timestamp';
const messages = defineMessages({
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closed: { id: 'poll.closed', defaultMessage: 'Closed' },
});
const makeEmojiMap = record => record.get('emojis').reduce((obj, emoji) => {
obj[`:${emoji.get('shortcode')}:`] = emoji.toJS();
return obj;
}, {});
export default @injectIntl
class Poll extends ImmutablePureComponent {
static propTypes = {
poll: ImmutablePropTypes.map,
intl: PropTypes.object.isRequired,
dispatch: PropTypes.func,
disabled: PropTypes.bool,
};
state = {
selected: {},
};
handleOptionChange = e => {
const { target: { value } } = e;
if (this.props.poll.get('multiple')) {
const tmp = { ...this.state.selected };
if (tmp[value]) {
delete tmp[value];
} else {
tmp[value] = true;
}
this.setState({ selected: tmp });
} else {
const tmp = {};
tmp[value] = true;
this.setState({ selected: tmp });
}
};
handleVote = () => {
if (this.props.disabled) {
return;
}
this.props.dispatch(vote(this.props.poll.get('id'), Object.keys(this.state.selected)));
};
handleRefresh = () => {
if (this.props.disabled) {
return;
}
this.props.dispatch(fetchPoll(this.props.poll.get('id')));
};
renderOption (option, optionIndex) {
const { poll, disabled } = this.props;
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const percent = poll.get('votes_count') === 0 ? 0 : (option.get('votes_count') / poll.get('votes_count')) * 100;
const leading = poll.get('options').filterNot(other => other.get('title') === option.get('title')).every(other => option.get('votes_count') > other.get('votes_count'));
const active = !!this.state.selected[`${optionIndex}`];
const showResults = poll.get('voted') || poll.get('expired');
let titleEmojified = option.get('title_emojified');
if (!titleEmojified) {
const emojiMap = makeEmojiMap(poll);
titleEmojified = emojify(escapeTextContentForBrowser(option.get('title')), emojiMap);
}
return (
<li key={option.get('title')}>
{showResults && (
<Motion defaultStyle={{ width: 0 }} style={{ width: spring(percent, { stiffness: 180, damping: 12 }) }}>
{({ width }) =>
<span className={classNames('poll__chart', { leading })} style={{ width: `${width}%` }} />
}
</Motion>
)}
<label className={classNames('poll__text', { selectable: !showResults })}>
<input
name='vote-options'
type={poll.get('multiple') ? 'checkbox' : 'radio'}
value={optionIndex}
checked={active}
onChange={this.handleOptionChange}
disabled={disabled}
/>
{!showResults && <span className={classNames('poll__input', { checkbox: poll.get('multiple'), active })} />}
{showResults && <span className='poll__number'>{Math.round(percent)}%</span>}
<span dangerouslySetInnerHTML={{ __html: titleEmojified }} />
</label>
</li>
);
}
render () {
const { poll, intl } = this.props;
if (!poll) {
return null;
}
const timeRemaining = poll.get('expired') ? intl.formatMessage(messages.closed) : <RelativeTimestamp timestamp={poll.get('expires_at')} futureDate />;
const showResults = poll.get('voted') || poll.get('expired');
const disabled = this.props.disabled || Object.entries(this.state.selected).every(item => !item);
return (
<div className='poll'>
<ul>
{poll.get('options').map((option, i) => this.renderOption(option, i))}
</ul>
<div className='poll__footer'>
{!showResults && <button className='button button-secondary' disabled={disabled} onClick={this.handleVote}><FormattedMessage id='poll.vote' defaultMessage='Vote' /></button>}
{showResults && !this.props.disabled && <span><button className='poll__link' onClick={this.handleRefresh}><FormattedMessage id='poll.refresh' defaultMessage='Refresh' /></button> · </span>}
<FormattedMessage id='poll.total_votes' defaultMessage='{count, plural, one {# vote} other {# votes}}' values={{ count: poll.get('votes_count') }} />
{poll.get('expires_at') && <span> · {timeRemaining}</span>}
</div>
</div>
);
}
}