react-toolbox/components/tooltip/index.jsx

50 lines
1.2 KiB
JavaScript

import React from 'react';
import ReactDOM from 'react-dom';
import style from './style';
class Tooltip extends React.Component {
static propTypes = {
className: React.PropTypes.string,
label: React.PropTypes.string
};
static defaultProps = {
className: ''
};
state = {
active: false
};
componentDidMount = () => {
const node = ReactDOM.findDOMNode(this);
const parent = node.parentNode;
if (parent) {
parent.onmouseover = () => {
const position = parent.getBoundingClientRect();
node.style.top = `${position.top + position.height}px`;
node.style.left = `${position.left + parseInt((position.width / 2) - (node.offsetWidth / 2))}px`;
if (!this.state.active) this.setState({ active: true});
};
parent.onmouseout = () => {
if (this.state.active) this.setState({ active: false});
};
}
};
render () {
let className = style.root;
if (this.props.className) className += ` ${this.props.className}`;
if (this.state.active) className += ` ${style.active}`;
return (
<span data-react-toolbox='tooltip' className={className}>
{this.props.label}
</span>
);
}
}
export default Tooltip;