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