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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | 21x | import React, { Component } from 'react'; import { NOOP } from './utils'; function Timer(callback, delay) { let timerId; let start = delay; let remaining = delay; this.clear = function () { clearTimeout(timerId); }; this.pause = function () { clearTimeout(timerId); remaining -= Date.now() - start; }; this.resume = function () { start = Date.now(); clearTimeout(timerId); timerId = setTimeout(callback, remaining); } this.resume(); } export class ToastController extends Component { state = { isRunning: Boolean(this.props.autoDismiss), }; static defaultProps = { autoDismiss: false }; componentDidMount() { this.startTimer(); } componentDidUpdate(prevProps) { if (prevProps.autoDismiss !== this.props.autoDismiss) { const startOrClear = this.props.autoDismiss ? this.startTimer : this.clearTimer; startOrClear(); } } componentWillUnmount() { this.clearTimer(); } startTimer = () => { const { autoDismiss, autoDismissTimeout, onDismiss } = this.props; if (!autoDismiss) return; this.setState({ isRunning: true }); this.timeout = new Timer(onDismiss, autoDismissTimeout); }; clearTimer = () => { if (this.timeout) this.timeout.clear(); }; onMouseEnter = () => { this.setState({ isRunning: false }, () => { if (this.timeout) this.timeout.pause(); }); }; onMouseLeave = () => { this.setState({ isRunning: true }, () => { if (this.timeout) this.timeout.resume(); }); }; render() { const { autoDismiss, autoDismissTimeout, component: Toast, ...props } = this.props; const { isRunning } = this.state; // NOTE: conditions here so methods can be clean const handleMouseEnter = autoDismiss ? this.onMouseEnter : NOOP; const handleMouseLeave = autoDismiss ? this.onMouseLeave : NOOP; return ( <Toast autoDismiss={autoDismiss} autoDismissTimeout={autoDismissTimeout} isRunning={isRunning} onMouseEnter={handleMouseEnter} onMouseLeave={handleMouseLeave} {...props} /> ); } } |