refactor
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Xmader
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88e10572b2
commit
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@ -0,0 +1,100 @@
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type BtnElement = HTMLElement
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/**
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* Select the original Download Button
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*/
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export const getDownloadBtn = (): BtnElement => {
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const btnsDiv = document.querySelector('.score-right .buttons-wrapper') || document.querySelectorAll('aside section > div')[4]
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const btn = btnsDiv.querySelector('button, .button') as BtnElement
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btn.onclick = null
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// fix the icon of the download btn
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// if the `btn` seleted was a `Print` btn, replace the `print` icon with the `download` icon
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const svgPath: SVGPathElement | null = btn.querySelector('svg > path')
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if (svgPath) {
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svgPath.setAttribute('d', 'M9.6 2.4h4.8V12h2.784l-5.18 5.18L6.823 12H9.6V2.4zM19.2 19.2H4.8v2.4h14.4v-2.4z')
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}
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if (btn.nodeName.toLowerCase() === 'button') {
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btn.setAttribute('style', 'width: 205px !important')
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} else {
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btn.dataset.target = ''
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}
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return btn
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}
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interface BtnOptions {
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readonly name: string;
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readonly action: BtnAction;
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}
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export class BtnList {
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private readonly list: BtnElement[] = [];
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constructor (private templateBtn: BtnElement) { }
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add (options: BtnOptions): BtnElement {
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const btn: HTMLButtonElement = this.templateBtn.cloneNode(true) as any
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const textNode = [...btn.childNodes].find((x) => {
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const txt = x.textContent as string
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return txt.includes('Download') || txt.includes('Print')
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}) as Node
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const setText = (str: string): void => {
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textNode.textContent = str
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}
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setText(options.name)
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btn.onclick = (): void => {
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options.action(options.name, btn, setText)
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}
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this.list.push(btn)
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return btn
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}
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/**
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* replace the template button with the list of new buttons
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*/
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commit (): void {
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this.templateBtn.replaceWith(...this.list)
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}
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}
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type BtnAction = (btnName: string, btnEl: BtnElement, setText: (str: string) => void) => any
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// eslint-disable-next-line @typescript-eslint/no-namespace
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export namespace BtnAction {
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export const PROCESSING_TEXT = 'Processing…'
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export const ERROR_TEXT = '❌Download Failed!'
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export const openUrl = (url: string): BtnAction => {
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return (): any => window.open(url)
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}
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export const process = (fn: () => any): BtnAction => {
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return async (name, btn, setText): Promise<void> => {
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const _onclick = btn.onclick
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btn.onclick = null
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setText(PROCESSING_TEXT)
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try {
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await fn()
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setText(name)
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} catch (err) {
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setText(ERROR_TEXT)
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console.error(err)
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}
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btn.onclick = _onclick
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}
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}
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}
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248
src/main.ts
248
src/main.ts
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@ -3,11 +3,10 @@ import './meta'
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import { waitForDocumentLoaded, saveAs } from './utils'
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import { downloadPDF } from './pdf'
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import { fetchMscz, downloadMscz } from './mscz'
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import { getDownloadBtn, BtnList, BtnAction } from './btn'
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import * as recaptcha from './recaptcha'
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import scoreinfo from './scoreinfo'
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const PROCESSING_TEXT = 'Processing…'
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const FAILED_TEXT = '❌Download Failed!'
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const WEBMSCORE_URL = 'https://cdn.jsdelivr.net/npm/webmscore@0.5/webmscore.js'
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const main = (): void => {
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@ -18,156 +17,107 @@ const main = (): void => {
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// eslint-disable-next-line @typescript-eslint/no-floating-promises
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recaptcha.init()
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const btnsDiv = document.querySelector('.score-right .buttons-wrapper') || document.querySelectorAll('aside section > div')[4]
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const downloadBtn = btnsDiv.querySelector('button, .button') as HTMLElement
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downloadBtn.onclick = null
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const btnList = new BtnList(getDownloadBtn())
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// fix the icon of the download btn
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// if the `downloadBtn` seleted was a `Print` btn, replace the `print` icon with the `download` icon
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const svgPath: SVGPathElement | null = downloadBtn.querySelector('svg > path')
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if (svgPath) {
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svgPath.setAttribute('d', 'M9.6 2.4h4.8V12h2.784l-5.18 5.18L6.823 12H9.6V2.4zM19.2 19.2H4.8v2.4h14.4v-2.4z')
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}
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const downloadURLs = {
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MSCZ: null,
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PDF: null,
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MusicXML: scoreinfo.mxlUrl,
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MIDI: scoreinfo.midiUrl,
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MP3: scoreinfo.mp3Url,
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Parts: null,
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}
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// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
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const createBtn = (name: string) => {
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const btn: HTMLButtonElement = downloadBtn.cloneNode(true) as any
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if (btn.nodeName.toLowerCase() === 'button') {
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btn.setAttribute('style', 'width: 205px !important')
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} else {
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btn.dataset.target = ''
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}
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const textNode = [...btn.childNodes].find((x) => {
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const txt = x.textContent as string
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return txt.includes('Download') || txt.includes('Print')
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}) as Node
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textNode.textContent = `Download ${name}`
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return {
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btn,
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textNode,
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}
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}
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const newDownloadBtns = Object.keys(downloadURLs).map((name) => {
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const url = downloadURLs[name]
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const { btn, textNode } = createBtn(name)
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if (name === 'PDF') {
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btn.onclick = async (): Promise<void> => {
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textNode.textContent = PROCESSING_TEXT
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try {
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await downloadPDF()
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textNode.textContent = 'Download PDF'
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} catch (err) {
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textNode.textContent = FAILED_TEXT
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console.error(err)
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}
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}
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} else if (name === 'MSCZ') {
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btn.onclick = async (): Promise<void> => {
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textNode.textContent = PROCESSING_TEXT
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try {
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await downloadMscz()
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textNode.textContent = 'Download MSCZ'
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} catch (err) {
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textNode.textContent = FAILED_TEXT
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console.error(err)
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}
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}
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} else if (name === 'Parts') { // download individual parts
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btn.title = 'Download individual parts (BETA)'
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const cb = btn.onclick = async (): Promise<void> => {
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btn.onclick = null
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textNode.textContent = PROCESSING_TEXT
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const w = window.open('') as Window
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const txt = document.createTextNode(PROCESSING_TEXT)
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w.document.body.append(txt)
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// set page hooks
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// eslint-disable-next-line prefer-const
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let score: any
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const destroy = (): void => {
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score.destroy()
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w.close()
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}
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window.addEventListener('unload', destroy)
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w.addEventListener('beforeunload', () => {
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score.destroy()
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window.removeEventListener('unload', destroy)
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textNode.textContent = 'Download Parts'
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btn.onclick = cb
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})
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// load webmscore (https://github.com/LibreScore/webmscore)
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const script = w.document.createElement('script')
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script.src = WEBMSCORE_URL
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w.document.body.append(script)
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await new Promise(resolve => { script.onload = resolve })
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// parse mscz data
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const data = new Uint8Array(
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new Uint8Array(await fetchMscz()) // copy its ArrayBuffer
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)
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score = await w['WebMscore'].load('mscz', data)
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await score.generateExcerpts()
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const metadata = await score.metadata()
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console.log('score metadata loaded by webmscore', metadata)
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// render the part selection page
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txt.remove()
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const fieldset = w.document.createElement('fieldset')
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for (const excerpt of metadata.excerpts) {
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const e = w.document.createElement('input')
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e.name = 'score-part'
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e.type = 'radio'
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e.value = excerpt.id
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const label = w.document.createElement('label')
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label.innerText = excerpt.title
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const br = w.document.createElement('br')
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fieldset.append(e, label, br)
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}
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const submitBtn = w.document.createElement('input')
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submitBtn.type = 'submit'
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submitBtn.value = 'Download PDF'
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fieldset.append(submitBtn)
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w.document.body.append(fieldset)
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submitBtn.onclick = async (): Promise<void> => {
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const checked = fieldset.querySelector('input:checked') as HTMLInputElement
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const id = checked.value
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await score.setExcerptId(id)
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const filename = scoreinfo.fileName
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const data = new Blob([await score.savePdf()])
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saveAs(data, `${filename}-part-${id}.pdf`)
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}
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}
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} else {
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btn.onclick = (): void => {
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window.open(url)
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}
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}
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return btn
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btnList.add({
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name: 'Download MSCZ',
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action: BtnAction.process(downloadMscz),
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})
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downloadBtn.replaceWith(...newDownloadBtns)
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btnList.add({
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name: 'Download PDF',
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action: BtnAction.process(downloadPDF),
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})
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btnList.add({
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name: 'Download MusicXML',
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action: BtnAction.openUrl(scoreinfo.mxlUrl),
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})
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btnList.add({
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name: 'Download MIDI',
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action: BtnAction.openUrl(scoreinfo.midiUrl),
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})
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btnList.add({
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name: 'Download MP3',
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action: BtnAction.openUrl(scoreinfo.mp3Url),
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})
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btnList.add({
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name: 'Individual Parts',
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async action (btnName, btn, setText) {
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const _onclick = btn.onclick
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btn.onclick = null
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setText(BtnAction.PROCESSING_TEXT)
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const w = window.open('') as Window
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const txt = document.createTextNode(BtnAction.PROCESSING_TEXT)
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w.document.body.append(txt)
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// set page hooks
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// eslint-disable-next-line prefer-const
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let score: any
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const destroy = (): void => {
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score.destroy()
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w.close()
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}
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window.addEventListener('unload', destroy)
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w.addEventListener('beforeunload', () => {
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score.destroy()
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window.removeEventListener('unload', destroy)
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setText(btnName)
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btn.onclick = _onclick
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})
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// load webmscore (https://github.com/LibreScore/webmscore)
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const script = w.document.createElement('script')
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script.src = WEBMSCORE_URL
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w.document.body.append(script)
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await new Promise(resolve => { script.onload = resolve })
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// parse mscz data
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const data = new Uint8Array(
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new Uint8Array(await fetchMscz()) // copy its ArrayBuffer
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)
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score = await w['WebMscore'].load('mscz', data)
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await score.generateExcerpts()
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const metadata = await score.metadata()
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console.log('score metadata loaded by webmscore', metadata)
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// render the part selection page
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txt.remove()
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const fieldset = w.document.createElement('fieldset')
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for (const excerpt of metadata.excerpts) {
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const e = w.document.createElement('input')
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e.name = 'score-part'
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e.type = 'radio'
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e.value = excerpt.id
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const label = w.document.createElement('label')
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label.innerText = excerpt.title
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const br = w.document.createElement('br')
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fieldset.append(e, label, br)
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}
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const submitBtn = w.document.createElement('input')
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submitBtn.type = 'submit'
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submitBtn.value = 'Download PDF'
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fieldset.append(submitBtn)
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w.document.body.append(fieldset)
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submitBtn.onclick = async (): Promise<void> => {
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const checked = fieldset.querySelector('input:checked') as HTMLInputElement
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const id = checked.value
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await score.setExcerptId(id)
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const filename = scoreinfo.fileName
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const data = new Blob([await score.savePdf()])
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saveAs(data, `${filename}-part-${id}.pdf`)
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}
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},
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}).title = 'Download individual parts (BETA)'
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btnList.commit()
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}
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// eslint-disable-next-line @typescript-eslint/no-floating-promises
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