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import React, { Component } from 'react'
// import PropTypes from 'prop-types'
import { bindActionCreators } from 'redux'
import { connect } from 'react-redux'
function formatLabel(label, value) {
if (!value) {
return label
}
let len = 0
return (
<span>
{
label.split(new RegExp(value.replace(/[-\[\]\(\)\+\*\\\^\$\{\}\.\?\&\|\<\>]/g, ''), "i")) // eslint-disable-line
.reduce((prev, current, i) => {
if (!i) {
len += current.length
return [current]
}
const ret = prev.concat(<b key={i}>{label.substr(len, value.length)}</b>, current)
len += value.length + current.length
return ret
}, [])
}
</span>
)
}
function sanitizeForAutocomplete(s) {
return (s || "")
.toLowerCase()
.replace(/[^a-zA-Z0-9 ]/g, '')
.trim()
.replace(/\\/g, '')
}
class Autocomplete extends Component {
constructor(props) {
super()
this.state = {
q: props.q || "",
selected: 0,
matches: []
}
this.handleKeyDown = this.handleKeyDown.bind(this)
this.handleChange = this.handleChange.bind(this)
this.handleCancel = this.handleCancel.bind(this)
}
componentWillMount() {
// build index based on what's in the hierarchy
const { nodes } = this.props.hierarchy
let index = []
this.index = index
Object.keys(nodes).forEach(key => {
const node = nodes[key]
if (!key || !node || !node.name || !node.parent) return
let { name } = node
let prefixName = name
if (node.is_attribute) {
const parent = nodes[node.parent]
if (parent) {
prefixName = parent.name + " (" + name + ")"
}
}
index.push([sanitizeForAutocomplete(prefixName), name, node.id])
node.synonyms
.split("\n")
.map(word => word = word.trim())
.filter(word => !!word)
.forEach(word => index.push([prefixName, name, node.id]))
})
}
handleKeyDown(e) {
let id
switch (e.keyCode) {
case 27: // escape
e.preventDefault()
this.handleCancel()
break
case 37: // left
case 38: // up
e.preventDefault()
this.setState({
selected: (this.state.matches.length + this.state.selected - 1) % this.state.matches.length
})
return false
case 39: // right
case 40: // down
e.preventDefault()
this.setState({
selected: (this.state.selected + 1) % this.state.matches.length
})
return false
case 13: // enter
id = this.state.matches[this.state.selected]
e.preventDefault()
this.handleSelect(id)
return false
default:
break
}
}
handleChange(e) {
// search for the given string in our index
const q = e.target.value
let value = sanitizeForAutocomplete(q)
if (!value.length) {
this.setState({
q,
selected: 0,
matches: [],
})
return
}
const re = new RegExp(value)
let matches = []
let seen = {}
this.index.forEach(pair => {
if (seen[pair[2]]) return
if (pair[0].match(re)) {
seen[pair[2]] = true
if (pair[1].indexOf(value) === 0) {
matches.unshift(pair[2])
} else {
matches.push(pair[2])
}
}
})
this.setState({
q,
selected: 0,
matches: matches.slice(0, 10),
})
}
handleSelect(id) {
const { nodes } = this.props.hierarchy
const node = nodes[id]
if (this.props.onSelect) this.props.onSelect(node)
this.setState({ q: "", selected: 0, matches: [] })
}
handleCancel() {
if (this.props.onCancel) this.props.onCancel()
this.setState({ q: "", selected: 0, matches: [] })
}
render() {
// const suggestions = this.state.suggestions.map((suggestion))
const { nodes } = this.props.hierarchy
const { q, selected } = this.state
const matches = this.state.matches.map((match, i) => {
const node = nodes[match]
const parent = nodes[node.parent]
let label
if (node.is_attribute) {
label = (
<span>
{formatLabel(parent.name, q)}
{' '}<small>{'('}{formatLabel(node.name, q)}{')'}</small>
</span>
)
} else {
label = formatLabel(node.name, q)
}
return (
<div
key={i}
className={selected === i ? 'selected' : ''}
onClick={() => this.handleSelect(node.id)}
onMouseEnter={() => this.setState({ selected: i })}
>
{label}
</div>
)
})
return (
<div className="autocomplete">
<input
type="text"
name="q"
value={this.state.q}
onKeyDown={this.handleKeyDown}
onChange={this.handleChange}
autoFocus
autoCapitalize="off"
autoComplete="off"
placeholder="Start typing a name"
/>
<div className="matches">
{matches}
</div>
</div>
)
}
}
const mapStateToProps = (state, ownProps) => ({
onSelect: ownProps.onSelect,
})
const mapDispatchToProps = (dispatch) => ({
})
export default connect(mapStateToProps, mapDispatchToProps)(Autocomplete)
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