mirror of
https://github.com/the1812/Bilibili-Evolved.git
synced 2025-11-04 21:22:45 +08:00
101 lines
2.5 KiB
JavaScript
101 lines
2.5 KiB
JavaScript
let cidHooked = false
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const videoChangeCallbacks = []
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export class Observer {
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constructor (element, callback) {
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this.element = element
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this.callback = callback
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this.observer = null
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this.options = undefined
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}
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start () {
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if (this.element) {
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this.observer = new MutationObserver(this.callback)
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this.observer.observe(this.element, this.options)
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}
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return this
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}
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stop () {
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this.observer && this.observer.disconnect()
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return this
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}
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static observe (selector, callback, options) {
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callback([])
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let elements = selector
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if (typeof selector === 'string') {
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elements = [...document.querySelectorAll(selector)]
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} else if (!Array.isArray(selector)) {
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elements = [selector]
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}
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return elements.map(
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it => {
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const observer = new Observer(it, callback)
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observer.options = options
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return observer.start()
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})
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}
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static childList (selector, callback) {
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return Observer.observe(selector, callback, {
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childList: true,
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subtree: false,
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attributes: false
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})
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}
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static childListSubtree (selector, callback) {
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return Observer.observe(selector, callback, {
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childList: true,
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subtree: true,
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attributes: false
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})
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}
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static attributes (selector, callback) {
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return Observer.observe(selector, callback, {
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childList: false,
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subtree: false,
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attributes: true
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})
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}
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static attributesSubtree (selector, callback) {
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return Observer.observe(selector, callback, {
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childList: false,
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subtree: true,
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attributes: true
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})
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}
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static all (selector, callback) {
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return Observer.observe(selector, callback, {
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childList: true,
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subtree: true,
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attributes: true
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})
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}
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static async videoChange (callback) {
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const cid = await SpinQuery.select(() => unsafeWindow.cid)
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if (cid === null) {
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return
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}
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if (!cidHooked) {
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let hookedCid = cid
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Object.defineProperty(unsafeWindow, 'cid', {
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get () {
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return hookedCid
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},
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set (newId) {
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hookedCid = newId
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if (!Array.isArray(newId)) {
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videoChangeCallbacks.forEach(it => it())
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}
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}
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})
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cidHooked = true
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}
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// callback();
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const videoContainer = await SpinQuery.select('#bofqi video')
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if (videoContainer) {
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Observer.childList(videoContainer, callback)
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} else {
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callback()
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}
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videoChangeCallbacks.push(callback)
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}
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}
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