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// Populate the sidebar
//
// This is a script, and not included directly in the page, to control the total size of the book.
// The TOC contains an entry for each page, so if each page includes a copy of the TOC,
// the total size of the page becomes O(n**2).
class MDBookSidebarScrollbox extends HTMLElement {
constructor() {
super();
}
connectedCallback() {
this.innerHTML = '<ol class="chapter"><li class="chapter-item affix "><a href="about-book.html">关于本书</a></li><li class="chapter-item affix "><a href="into-rust.html"> Rust </a></li><li class="chapter-item affix "><a href="first-try/sth-you-should-not-do.html"></a></li><li class="chapter-item affix "><a href="community.html"></a></li><li class="chapter-item affix "><li class="spacer"></li><li class="chapter-item affix "><a href="beat-ai.html">BeatAI: AI </a></li><li class="chapter-item affix "><li class="part-title">Rust </li><li class="chapter-item affix "><li class="spacer"></li><li class="chapter-item "><a href="first-try/intro.html"><strong aria-hidden="true">1.</strong> 便</a><a class="toggle"><div></div></a></li><li><ol class="section"><li class="chapter-item "><a href="first-try/installation.html"><strong aria-hidden="true">1.1.</strong> Rust </a></li><li class="chapter-item "><a href="first-try/editor.html"><strong aria-hidden="true">1.2.</strong> VSCode!</a></li><li class="chapter-item "><a href="first-try/cargo.html"><strong aria-hidden="true">1.3.</strong> Cargo</a></li><li class="chapter-item "><a href="first-try/hello-world.html"><strong aria-hidden="true">1.4.</strong> Hello world</a></li><li class="chapter-item "><a href="first-try/slowly-downloading.html"><strong aria-hidden="true">1.5.</strong> </a></li></ol></li><li class="chapter-item "><a href="basic/intro.html"><strong aria-hidden="true">2.</strong> Rust </a><a class="toggle"><div></div></a></li><li><ol class="section"><li class="chapter-item "><a href="basic/variable.html"><strong aria-hidden="true">2.1.</strong> </a></li><li class="chapter-item "><a href="basic/base-type/index.html"><strong aria-hidden="true">2.2.</strong> </a><a class="toggle"><div></div></a></li><li><ol class="section"><li class="chapter-item "><a href="basic/base-type/numbers.html"><strong aria-hidden="true">2.2.1.</strong> </a></li><li class="chapter-item "><a href="basic/base-type/char-bool.html"><strong aria-hidden="true">2.2.2.</strong> </a></li><li class="chapter-item "><a href="basic/base-type/statement-expression.html"><strong aria-hidden="true">2.2.3.</strong> </a></li><li class="chapter-item "><a href="basic/base-type/function.html"><strong aria-hidden="true">2.2.4.</strong> </a></li></ol></li><li class="chapter-item "><a href="basic/ownership/index.html"><strong aria-hidden="true">2.3.</strong> </a><a class="toggle"><div></div></a></li><li><ol class="section"><li class="chapter-item "><a href="basic/ownership/ownership.html"><strong aria-hidden="true">2.3.1.</strong> </a></li><li class="chapter-item "><a href="basic/ownership/borrowing.html"><strong aria-hidden="true">2.3.2.</strong> </a></li></ol></li><li class="chapter-item "><a href="basic/compound-type/intro.html"><strong aria-hidden="true">2.4.</strong> </a><a class="toggle"><div></div></a></li><li><ol class="section"><li class="chapter-item "><a href="basic/compound-type/string-slice.html"><strong aria-hidden="true">2.4.1.</strong> </a></li><li class="chapter-item "><a href="basic/compound-type/tuple.html"><strong aria-hidden="true">2.4.2.</strong> </a></li><li class="chapter-item "><a href="basic/compound-type/struct.html"><strong aria-hidden="true">2.4.3.</strong> </a></li><li class="chapter-item "><a href="basic/compound-type/enum.html"><strong aria-hidden="true">2.4.4.</strong> </a></li><li class="chapter-item "><a href="basic/compound-type/array.html"><strong aria-hidden="true">2.4.5.</strong> </a></li></ol></li><li class="chapter-item "><a href="basic/flow-control.html"><strong aria-hidden="true">2.5.</strong> </a></li><li class="chapter-item "><a href="basic/match-pattern/int
// Set the current, active page, and reveal it if it's hidden
let current_page = document.location.href.toString().split("#")[0];
if (current_page.endsWith("/")) {
current_page += "index.html";
}
var links = Array.prototype.slice.call(this.querySelectorAll("a"));
var l = links.length;
for (var i = 0; i < l; ++i) {
var link = links[i];
var href = link.getAttribute("href");
if (href && !href.startsWith("#") && !/^(?:[a-z+]+:)?\/\//.test(href)) {
link.href = path_to_root + href;
}
// The "index" page is supposed to alias the first chapter in the book.
if (link.href === current_page || (i === 0 && path_to_root === "" && current_page.endsWith("/index.html"))) {
link.classList.add("active");
var parent = link.parentElement;
if (parent && parent.classList.contains("chapter-item")) {
parent.classList.add("expanded");
}
while (parent) {
if (parent.tagName === "LI" && parent.previousElementSibling) {
if (parent.previousElementSibling.classList.contains("chapter-item")) {
parent.previousElementSibling.classList.add("expanded");
}
}
parent = parent.parentElement;
}
}
}
// Track and set sidebar scroll position
this.addEventListener('click', function(e) {
if (e.target.tagName === 'A') {
sessionStorage.setItem('sidebar-scroll', this.scrollTop);
}
}, { passive: true });
var sidebarScrollTop = sessionStorage.getItem('sidebar-scroll');
sessionStorage.removeItem('sidebar-scroll');
if (sidebarScrollTop) {
// preserve sidebar scroll position when navigating via links within sidebar
this.scrollTop = sidebarScrollTop;
} else {
// scroll sidebar to current active section when navigating via "next/previous chapter" buttons
var activeSection = document.querySelector('#sidebar .active');
if (activeSection) {
activeSection.scrollIntoView({ block: 'center' });
}
}
// Toggle buttons
var sidebarAnchorToggles = document.querySelectorAll('#sidebar a.toggle');
function toggleSection(ev) {
ev.currentTarget.parentElement.classList.toggle('expanded');
}
Array.from(sidebarAnchorToggles).forEach(function (el) {
el.addEventListener('click', toggleSection);
});
}
}
window.customElements.define("mdbook-sidebar-scrollbox", MDBookSidebarScrollbox);