79 lines
2.7 KiB
JavaScript
79 lines
2.7 KiB
JavaScript
import * as bodyScrollLock from 'body-scroll-lock'
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let previousNavPaddingRight
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let previousAppBgWrapperRight
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const lockerEls = new Set([])
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const allowedScrollableClasses = ['emoji-tabs-item', 'emoji-item']
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const disableBodyScroll = (el) => {
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const scrollBarGap = window.innerWidth - document.documentElement.clientWidth
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bodyScrollLock.disableBodyScroll(el, {
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reserveScrollBarGap: true,
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allowTouchMove: el => allowedScrollableClasses.includes(el.parentElement.className),
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})
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lockerEls.add(el)
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setTimeout(() => {
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if (lockerEls.size <= 1) {
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// If previousNavPaddingRight is already set, don't set it again.
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if (previousNavPaddingRight === undefined) {
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const navEl = document.getElementById('nav')
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previousNavPaddingRight = window.getComputedStyle(navEl).getPropertyValue('padding-right')
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navEl.style.paddingRight = previousNavPaddingRight ? `calc(${previousNavPaddingRight} + ${scrollBarGap}px)` : `${scrollBarGap}px`
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}
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// If previousAppBgWrapeprRight is already set, don't set it again.
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if (previousAppBgWrapperRight === undefined) {
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const appBgWrapperEl = document.getElementById('app_bg_wrapper')
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previousAppBgWrapperRight = window.getComputedStyle(appBgWrapperEl).getPropertyValue('right')
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appBgWrapperEl.style.right = previousAppBgWrapperRight ? `calc(${previousAppBgWrapperRight} + ${scrollBarGap}px)` : `${scrollBarGap}px`
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}
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document.body.classList.add('scroll-locked')
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}
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})
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}
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const enableBodyScroll = (el) => {
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lockerEls.delete(el)
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setTimeout(() => {
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if (lockerEls.size === 0) {
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if (previousNavPaddingRight !== undefined) {
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document.getElementById('nav').style.paddingRight = previousNavPaddingRight
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// Restore previousNavPaddingRight to undefined so disableBodyScroll knows it can be set again.
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previousNavPaddingRight = undefined
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}
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if (previousAppBgWrapperRight !== undefined) {
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document.getElementById('app_bg_wrapper').style.right = previousAppBgWrapperRight
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// Restore previousAppBgWrapperRight to undefined so disableBodyScroll knows it can be set again.
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previousAppBgWrapperRight = undefined
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}
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document.body.classList.remove('scroll-locked')
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}
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})
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bodyScrollLock.enableBodyScroll(el)
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}
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const directive = {
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mounted: (el, binding) => {
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if (binding.value) {
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disableBodyScroll(el)
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}
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},
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updated: (el, binding) => {
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if (binding.oldValue === binding.value) {
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return
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}
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if (binding.value) {
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disableBodyScroll(el)
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} else {
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enableBodyScroll(el)
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}
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},
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unmounted: (el) => {
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enableBodyScroll(el)
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}
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}
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export default (Vue) => {
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Vue.directive('body-scroll-lock', directive)
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}
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