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import React, { Component } from 'react'
// import { Link } from 'react-router-dom'
import { connect } from 'react-redux'
import { ROMAN_NUMERALS } from 'app/constants'
import actions from 'app/actions'
class TableOfContents extends Component {
render() {
const { loading, order, lookup } = this.props.annotation
if (loading || !order) return null
const sectionIds = order.filter(id => lookup[id].type === "section_heading")
return (
<div className="sidebar-content toc">
{sectionIds.map((id, i) => (
<div key={id} onClick={() => actions.align.setScrollPosition(lookup[id].start_ts)}>
{ROMAN_NUMERALS[i]}{'. '}{lookup[id].text}
</div>
))}
</div>
)
}
}
const mapStateToProps = state => ({
annotation: state.annotation.index,
})
export default connect(mapStateToProps)(TableOfContents)
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