// 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 = '
  1. Copyright
  2. Dedication
  3. Preface
  4. API Reference
    ❱
    1. Initialization
    2. Messages
    3. Sockets
    4. Contexts
    5. Memory
    6. Time
    7. URLs
    8. Asynchronous I/O
    9. Synchronization
    10. Threads
    11. Logging
    12. Statistics
    13. Errors
    14. Streams
    15. Miscellaneous
    16. ID Map
    17. Command Options
  6. Protocols
    ❱
    1. BUS Protocol
    2. PAIR Protocol
    3. PUB Protocol
    4. PULL Protocol
    5. PUSH Protocol
    6. REP Protocol
    7. REQ Protocol
    8. RESPONDENT Protocol
    9. SUB Protocol
    10. SURVEYOR Protocol
  8. Transports
    ❱
    1. Intra-Process Transport
    2. Inter-Process Transport
    3. BSD Socket (Experimental)
    4. UDP Transport (Experimental)
  10. Migration Guides
    ❱
    1. Migrating from NNG 1.x
    2. Migrating from libnanomsg
  12. Index
'; // Set the current, active page, and reveal it if it's hidden let current_page = document.location.href.toString(); 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);