101 lines
2.3 KiB
TypeScript
101 lines
2.3 KiB
TypeScript
import React, { Component } from 'react';
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import './SwapDropdown.scss';
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import classnames from 'classnames';
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export interface SingleCoin {
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id: string;
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name: string;
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image: string;
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status: string;
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}
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interface Props<T> {
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ariaLabel: string;
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options: SingleCoin[];
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value: string;
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onChange(value: T): void;
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}
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class SwapDropdown<T> extends Component<Props<T>, {}> {
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public state = {
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open: false
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};
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private dropdown: HTMLElement | null;
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public componentDidMount() {
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document.addEventListener('click', this.clickHandler);
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}
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public componentWillUnmount() {
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document.removeEventListener('click', this.clickHandler);
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}
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public handleClickOutside() {
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this.toggleDropdown();
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}
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public render() {
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const { open } = this.state;
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const { options, value } = this.props;
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const dropdownGrid = classnames(open && 'open', 'SwapDropdown-grid');
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const mappedCoins = options.sort((a, b) => (a.id > b.id ? 1 : -1)).map((coin: SingleCoin) => {
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const cn = classnames(coin.status !== 'available' && 'inactive', 'SwapDropdown-item');
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return (
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<li className={cn} key={coin.id}>
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<a onClick={coin.status === 'available' ? this.onChange.bind(null, coin.id) : null}>
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<img src={coin.image} height="20" width="20" />
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{/* <div className="SwapDropdown-desc"> */}
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<strong>{coin.id}</strong>
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<br />
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<small>{coin.name}</small>
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{/* </div> */}
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</a>
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</li>
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);
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});
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return (
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<div className="SwapDropdown" ref={el => (this.dropdown = el)}>
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<button onClick={this.toggleDropdown}>
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{value}
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<i className="caret" />
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</button>
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<ul className={dropdownGrid}>{mappedCoins}</ul>
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</div>
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);
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}
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private toggleDropdown = () => {
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this.setState({
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open: !this.state.open
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});
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};
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private onChange = (value: any) => {
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this.props.onChange(value);
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if (this.state.open) {
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this.setState({
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open: false
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});
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}
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};
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private clickHandler = (ev: Event) => {
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if (!this.state.open || !this.dropdown) {
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return;
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}
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if (
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this.dropdown !== ev.target &&
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ev.target instanceof HTMLElement &&
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!this.dropdown.contains(ev.target)
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) {
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this.setState({
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open: false
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});
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}
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};
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}
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export default SwapDropdown;
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