1 | import React from 'react';
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2 | import Portal from 'react-portal';
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3 | import PropTypes from 'prop-types';
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4 |
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5 | export default class OverflowExpander extends React.Component {
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6 | static propTypes = {
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7 | availableWidth: PropTypes.number.isRequired,
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8 | children: PropTypes.any,
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9 | }
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10 |
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11 | constructor(props) {
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12 | super(props);
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13 |
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14 | this.state = {
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15 | doesOverflow: false,
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16 | showPopover: false,
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17 | };
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18 | }
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19 |
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20 | componentDidMount() {
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21 | this.setState({
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22 | doesOverflow: this.doesOverflow(),
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23 | });
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24 | }
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25 |
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26 | componentDidUpdate(prevProps, prevState) {
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27 | const doesOverflow = this.doesOverflow();
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28 |
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29 | if (prevState.doesOverflow !== doesOverflow) {
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30 | this.setState({
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31 | doesOverflow,
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32 | });
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33 | }
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34 | }
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35 |
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36 | doesOverflow = () => {
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37 | const size = this.refs.measure.clientWidth;
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38 | return size >= this.props.availableWidth;
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39 | }
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40 |
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41 | handleMouseEnter = (e) => {
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42 | const clientRect = e.target.getBoundingClientRect();
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43 | const docWidth = document.body.getBoundingClientRect().width;
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44 | const leftSide = clientRect.left + this.props.availableWidth > docWidth / 2;
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45 | const arrowWidth = 11;
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46 |
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47 | this.setState({
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48 | showPopover: true,
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49 | popoverAnchorLeft: leftSide ? 'auto' : clientRect.left + this.props.availableWidth,
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50 | popoverAnchorRight: leftSide ? docWidth - clientRect.left + arrowWidth : 'auto',
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51 | popoverAnchorTop: (clientRect.top + clientRect.bottom) / 2,
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52 | popoverSide: leftSide ? 'left' : 'right',
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53 | });
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54 | }
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55 |
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56 | handleMouseLeave = () => {
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57 | this.setState({
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58 | showPopover: false,
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59 | });
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60 | }
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61 |
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62 | render() {
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63 | return (
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64 | <span onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave} style={{
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65 | display: 'inline-block',
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66 | width: this.props.availableWidth,
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67 | overflow: 'hidden',
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68 | textOverflow: 'ellipsis',
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69 | whiteSpace: 'nowrap',
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70 | }}>
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71 | <span ref="measure" style={{
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72 | position: 'absolute',
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73 | visibility: 'hidden',
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74 | }}>{this.props.children}</span>
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75 | <span>{this.props.children}</span>
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76 | <Portal isOpened={!!(this.state.doesOverflow && this.state.showPopover)}>
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77 | <div className={`popover fade ${this.state.popoverSide} in`} style={{
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78 | display: 'block',
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79 | position: 'absolute',
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80 | top: this.state.popoverAnchorTop,
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81 | left: this.state.popoverAnchorLeft,
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82 | right: this.state.popoverAnchorRight,
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83 | transform: 'translateY(-50%)',
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84 | backgroundColor: '#fff',
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85 | }}>
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86 | <div className="arrow" style={{top: '50%'}}></div>
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87 | <div className="popover-content" style={{wordWrap: 'break-word', overflow: 'hidden', marginRight: '14px'}}>{this.props.children}</div>
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88 | </div>
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89 | </Portal>
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90 | </span>
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91 | );
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92 | }
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93 | }
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