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carbon/components/Dropdown.js

127 lines
3.3 KiB
JavaScript

import React from 'react'
import enhanceWithClickOutside from 'react-click-outside'
import ArrowDown from './svg/Arrowdown'
import Checkmark from './svg/Checkmark'
import { PALETTE } from '../lib/constants'
class Dropdown extends React.Component {
constructor(props) {
super()
this.state = {
isVisible: false,
selected: props.selected || props.list[0]
}
this.select = this.select.bind(this)
this.toggle = this.toggle.bind(this)
}
select(item) {
if (this.state.selected !== item) {
this.props.onChange(item)
this.setState({ selected: item })
}
}
toggle() {
this.setState({ isVisible: !this.state.isVisible })
}
handleClickOutside() {
this.setState({ isVisible: false });
}
renderListItems() {
return this.props.list.map((item, i) => (
<div className="dropdown-list-item" key={i} onClick={this.select.bind(null, item)}>
<span>{ item.name }</span>
{ this.state.selected === item ? <Checkmark /> : null }
<style jsx>{`
.dropdown-list-item {
display: flex;
align-items: center;
justify-content: space-between;
background: ${PALETTE.EDITOR_BG};
user-select: none;
padding: 8px 16px;
border-bottom: 0.5px solid ${PALETTE.SECONDARY};
}
.dropdown-list-item:last-of-type {
border-bottom: none;
border-radius: 0px 0px 2px 2px;
}
`}</style>
</div>
))
}
render() {
// find longest list value in number of characters
const MIN_WIDTH = this.props.list.reduce((max, { name }) =>
(name.length > max ? name.length : max), 0)
return (
<div className="dropdown-container" style={{ minWidth: MIN_WIDTH * 16 }} onClick={this.toggle}>
<div className={`dropdown-display ${this.state.isVisible ? 'is-visible' : ''}`}>
<span>{ this.state.selected.name }</span>
<div className="arrow-down"><ArrowDown /></div>
</div>
<div className="dropdown-list">
{ this.renderListItems() }
</div>
<style jsx>{`
.arrow-down {
position: absolute;
right: 16px;
}
.is-visible > .arrow-down {
transform: rotate(180deg);
}
.is-visible {
border-radius: 3px 3px 0px 0px !important;
}
.dropdown-container {
height: 100%;
cursor: pointer;
}
.dropdown-display {
height: 100%;
border: 1px solid ${PALETTE.SECONDARY};
border-radius: 3px;
user-select: none;
padding: 8px 16px;
display: flex;
justify-content: flex-start;
align-items: center;
position: relative;
z-index: 1;
}
.dropdown-display:hover {
background: #131313;
}
.is-visible + .dropdown-list {
display: block;
}
.dropdown-list {
display: none;
margin-top: -1px;
border: 0.5px solid ${PALETTE.SECONDARY};
border-radius: 0px 0px 3px 3px;
max-height: 350px;
overflow-y: scroll;
}
`}</style>
</div>
)
}
}
export default enhanceWithClickOutside(Dropdown)