mirror of
https://github.com/nuxt/nuxt.git
synced 2024-12-12 07:17:13 +00:00
81 lines
2.9 KiB
JavaScript
81 lines
2.9 KiB
JavaScript
<% if (router.scrollBehavior) { %>
|
|
<%= isTest ? '/* eslint-disable quotes, semi, indent, comma-spacing, key-spacing, object-curly-spacing, space-before-function-paren */' : '' %>
|
|
export default <%= serializeFunction(router.scrollBehavior) %>
|
|
<%= isTest ? '/* eslint-enable quotes, semi, indent, comma-spacing, key-spacing, object-curly-spacing, space-before-function-paren */' : '' %>
|
|
<% } else { %>import { getMatchedComponents } from './utils'
|
|
|
|
if (process.client) {
|
|
if ('scrollRestoration' in window.history) {
|
|
window.history.scrollRestoration = 'manual'
|
|
|
|
// reset scrollRestoration to auto when leaving page, allowing page reload
|
|
// and back-navigation from other pages to use the browser to restore the
|
|
// scrolling position.
|
|
window.addEventListener('beforeunload', () => {
|
|
window.history.scrollRestoration = 'auto'
|
|
})
|
|
|
|
// Setting scrollRestoration to manual again when returning to this page.
|
|
window.addEventListener('load', () => {
|
|
window.history.scrollRestoration = 'manual'
|
|
})
|
|
}
|
|
}
|
|
|
|
export default function (to, from, savedPosition) {
|
|
// if the returned position is falsy or an empty object,
|
|
// will retain current scroll position.
|
|
let position = false
|
|
|
|
// if no children detected and scrollToTop is not explicitly disabled
|
|
const Pages = getMatchedComponents(to)
|
|
if (
|
|
Pages.length < 2 &&
|
|
Pages.every(Page => Page.options.scrollToTop !== false)
|
|
) {
|
|
// scroll to the top of the page
|
|
position = { x: 0, y: 0 }
|
|
} else if (Pages.some(Page => Page.options.scrollToTop)) {
|
|
// if one of the children has scrollToTop option set to true
|
|
position = { x: 0, y: 0 }
|
|
}
|
|
|
|
// savedPosition is only available for popstate navigations (back button)
|
|
if (savedPosition) {
|
|
position = savedPosition
|
|
}
|
|
|
|
const nuxt = window.<%= globals.nuxt %>
|
|
|
|
// triggerScroll is only fired when a new component is loaded
|
|
if (to.path === from.path && to.hash !== from.hash) {
|
|
nuxt.$nextTick(() => nuxt.$emit('triggerScroll'))
|
|
}
|
|
|
|
return new Promise((resolve) => {
|
|
// wait for the out transition to complete (if necessary)
|
|
nuxt.$once('triggerScroll', () => {
|
|
// coords will be used if no selector is provided,
|
|
// or if the selector didn't match any element.
|
|
if (to.hash) {
|
|
let hash = to.hash
|
|
// CSS.escape() is not supported with IE and Edge.
|
|
if (typeof window.CSS !== 'undefined' && typeof window.CSS.escape !== 'undefined') {
|
|
hash = '#' + window.CSS.escape(hash.substr(1))
|
|
}
|
|
try {
|
|
if (document.querySelector(hash)) {
|
|
// scroll to anchor by returning the selector
|
|
position = { selector: hash }
|
|
}
|
|
} catch (e) {
|
|
<%= isTest ? '// eslint-disable-next-line no-console' : '' %>
|
|
console.warn('Failed to save scroll position. Please add CSS.escape() polyfill (https://github.com/mathiasbynens/CSS.escape).')
|
|
}
|
|
}
|
|
resolve(position)
|
|
})
|
|
})
|
|
}
|
|
<% } %>
|