68 lines
2.3 KiB
JavaScript
68 lines
2.3 KiB
JavaScript
const DIRECTIONS = new Set(['normal', 'reverse', 'alternate', 'alternate-reverse'])
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const PLAY_STATES = new Set(['running', 'paused'])
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const FILL_MODES = new Set(['none', 'forwards', 'backwards', 'both'])
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const ITERATION_COUNTS = new Set(['infinite'])
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const TIMINGS = new Set([
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'linear',
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'ease',
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'ease-in',
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'ease-out',
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'ease-in-out',
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'step-start',
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'step-end',
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])
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const TIMING_FNS = ['cubic-bezier', 'steps']
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const COMMA = /\,(?![^(]*\))/g // Comma separator that is not located between brackets. E.g.: `cubiz-bezier(a, b, c)` these don't count.
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const SPACE = /\ +(?![^(]*\))/g // Similar to the one above, but with spaces instead.
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const TIME = /^(-?[\d.]+m?s)$/
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const DIGIT = /^(\d+)$/
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export default function parseAnimationValue(input) {
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let animations = input.split(COMMA)
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return animations.map((animation) => {
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let value = animation.trim()
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let result = { value }
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let parts = value.split(SPACE)
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let seen = new Set()
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for (let part of parts) {
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if (!seen.has('DIRECTIONS') && DIRECTIONS.has(part)) {
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result.direction = part
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seen.add('DIRECTIONS')
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} else if (!seen.has('PLAY_STATES') && PLAY_STATES.has(part)) {
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result.playState = part
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seen.add('PLAY_STATES')
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} else if (!seen.has('FILL_MODES') && FILL_MODES.has(part)) {
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result.fillMode = part
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seen.add('FILL_MODES')
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} else if (
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!seen.has('ITERATION_COUNTS') &&
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(ITERATION_COUNTS.has(part) || DIGIT.test(part))
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) {
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result.iterationCount = part
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seen.add('ITERATION_COUNTS')
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} else if (!seen.has('TIMING_FUNCTION') && TIMINGS.has(part)) {
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result.timingFunction = part
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seen.add('TIMING_FUNCTION')
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} else if (!seen.has('TIMING_FUNCTION') && TIMING_FNS.some((f) => part.startsWith(`${f}(`))) {
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result.timingFunction = part
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seen.add('TIMING_FUNCTION')
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} else if (!seen.has('DURATION') && TIME.test(part)) {
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result.duration = part
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seen.add('DURATION')
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} else if (!seen.has('DELAY') && TIME.test(part)) {
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result.delay = part
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seen.add('DELAY')
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} else if (!seen.has('NAME')) {
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result.name = part
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seen.add('NAME')
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} else {
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if (!result.unknown) result.unknown = []
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result.unknown.push(part)
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}
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}
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return result
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})
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}
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