vue-files-preview-inno/es/node_modules/epubjs/src/pagelist.mjs

A tool for previewing files such as doc, excel, pdf, image, markdown, txt, audio, and video and so on.

import o from "./epubcfi.mjs";
import { qs as h, querySelectorByType as c, qsa as f, indexOfSorted as u, locationOf as l } from "./utils/core.mjs";
class x {
  constructor(t) {
    this.pages = [], this.locations = [], this.epubcfi = new o(), this.firstPage = 0, this.lastPage = 0, this.totalPages = 0, this.toc = void 0, this.ncx = void 0, t && (this.pageList = this.parse(t)), this.pageList && this.pageList.length && this.process(this.pageList);
  }
  /**
   * Parse PageList Xml
   * @param  {document} xml
   */
  parse(t) {
    var e = h(t, "html"), a = h(t, "ncx");
    if (e)
      return this.parseNav(t);
    if (a)
      return this.parseNcx(t);
  }
  /**
   * Parse a Nav PageList
   * @private
   * @param  {node} navHtml
   * @return {PageList.item[]} list
   */
  parseNav(t) {
    var e = c(t, "nav", "page-list"), a = e ? f(e, "li") : [], n = a.length, i, s = [], r;
    if (!a || n === 0) return s;
    for (i = 0; i < n; ++i)
      r = this.item(a[i]), s.push(r);
    return s;
  }
  parseNcx(t) {
    var e = [], a = 0, n, i, s, r = 0;
    if (i = h(t, "pageList"), !i || (s = f(i, "pageTarget"), r = s.length, !s || s.length === 0))
      return e;
    for (a = 0; a < r; ++a)
      n = this.ncxItem(s[a]), e.push(n);
    return e;
  }
  ncxItem(t) {
    var e = h(t, "navLabel"), a = h(e, "text"), n = a.textContent, i = h(t, "content"), s = i.getAttribute("src"), r = parseInt(n, 10);
    return {
      href: s,
      page: r
    };
  }
  /**
   * Page List Item
   * @private
   * @param  {node} item
   * @return {object} pageListItem
   */
  item(t) {
    var e = h(t, "a"), a = e.getAttribute("href") || "", n = e.textContent || "", i = parseInt(n), s = a.indexOf("epubcfi"), r, p, g;
    return s != -1 ? (r = a.split("#"), p = r[0], g = r.length > 1 ? r[1] : !1, {
      cfi: g,
      href: a,
      packageUrl: p,
      page: i
    }) : {
      href: a,
      page: i
    };
  }
  /**
   * Process pageList items
   * @private
   * @param  {array} pageList
   */
  process(t) {
    t.forEach(function(e) {
      this.pages.push(e.page), e.cfi && this.locations.push(e.cfi);
    }, this), this.firstPage = parseInt(this.pages[0]), this.lastPage = parseInt(this.pages[this.pages.length - 1]), this.totalPages = this.lastPage - this.firstPage;
  }
  /**
   * Get a PageList result from a EpubCFI
   * @param  {string} cfi EpubCFI String
   * @return {number} page
   */
  pageFromCfi(t) {
    var e = -1;
    if (this.locations.length === 0)
      return -1;
    var a = u(t, this.locations, this.epubcfi.compare);
    return a != -1 ? e = this.pages[a] : (a = l(t, this.locations, this.epubcfi.compare), e = a - 1 >= 0 ? this.pages[a - 1] : this.pages[0], e !== void 0 || (e = -1)), e;
  }
  /**
   * Get an EpubCFI from a Page List Item
   * @param  {string | number} pg
   * @return {string} cfi
   */
  cfiFromPage(t) {
    var e = -1;
    typeof t != "number" && (t = parseInt(t));
    var a = this.pages.indexOf(t);
    return a != -1 && (e = this.locations[a]), e;
  }
  /**
   * Get a Page from Book percentage
   * @param  {number} percent
   * @return {number} page
   */
  pageFromPercentage(t) {
    var e = Math.round(this.totalPages * t);
    return e;
  }
  /**
   * Returns a value between 0 - 1 corresponding to the location of a page
   * @param  {number} pg the page
   * @return {number} percentage
   */
  percentageFromPage(t) {
    var e = (t - this.firstPage) / this.totalPages;
    return Math.round(e * 1e3) / 1e3;
  }
  /**
   * Returns a value between 0 - 1 corresponding to the location of a cfi
   * @param  {string} cfi EpubCFI String
   * @return {number} percentage
   */
  percentageFromCfi(t) {
    var e = this.pageFromCfi(t), a = this.percentageFromPage(e);
    return a;
  }
  /**
   * Destroy
   */
  destroy() {
    this.pages = void 0, this.locations = void 0, this.epubcfi = void 0, this.pageList = void 0, this.toc = void 0, this.ncx = void 0;
  }
}
export {
  x as default
};
//# sourceMappingURL=pagelist.mjs.map