| 1 |
const MILLISECONDS_MULTIPLIER = 1000; |
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|
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function getTransitionDurationFromElement(element) { |
| 4 |
if (!element) { |
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return 0; |
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} |
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|
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// Get transition-duration of the element |
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let { transitionDuration, transitionDelay } = |
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window.getComputedStyle(element); |
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|
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const floatTransitionDuration = Number.parseFloat(transitionDuration); |
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const floatTransitionDelay = Number.parseFloat(transitionDelay); |
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|
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// Return 0 if element or transition duration is not found |
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if (!floatTransitionDuration && !floatTransitionDelay) { |
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return 0; |
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} |
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|
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// If multiple durations are defined, take the first |
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[transitionDuration] = transitionDuration.split(','); |
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[transitionDelay] = transitionDelay.split(','); |
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|
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return ( |
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(Number.parseFloat(transitionDuration) + |
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Number.parseFloat(transitionDelay)) * |
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MILLISECONDS_MULTIPLIER |
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); |
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} |
| 30 |
|
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function execute(possibleCallback, args = [], defaultValue = possibleCallback) { |
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return typeof possibleCallback === 'function' |
| 33 |
? possibleCallback(...args) |
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: defaultValue; |
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} |
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|
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export default function transitionCallback( |
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callback, |
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transitionElement, |
| 40 |
waitForTransition = true |
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) { |
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if (!waitForTransition) { |
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execute(callback); |
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return; |
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} |
| 46 |
|
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const durationPadding = 5; |
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const emulatedDuration = |
| 49 |
getTransitionDurationFromElement(transitionElement) + durationPadding; |
| 50 |
|
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let called = false; |
| 52 |
|
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const handler = ({ target }) => { |
| 54 |
if (target !== transitionElement) { |
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return; |
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} |
| 57 |
|
| 58 |
called = true; |
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transitionElement.removeEventListener('transitionend', handler); |
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execute(callback); |
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}; |
| 62 |
|
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transitionElement.addEventListener('transitionend', handler); |
| 64 |
setTimeout(() => { |
| 65 |
if (!called) { |
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transitionElement.dispatchEvent(new Event('transitionend')); |
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} |
| 68 |
}, emulatedDuration); |
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} |
| 70 |
|
