1// Local js definitions:2/* global addClass, onEachLazy, removeClass, browserSupportsHistoryApi */3/* global updateLocalStorage, getVar, nonnull */456"use strict";78(function() {910const rootPath = getVar("root-path");1112const NAME_OFFSET = 0;13const DIRS_OFFSET = 1;14const FILES_OFFSET = 2;1516// WARNING: RUSTDOC_MOBILE_BREAKPOINT MEDIA QUERY17// If you update this line, then you also need to update the media query with the same18// warning in rustdoc.css19const RUSTDOC_MOBILE_BREAKPOINT = 700;2021function closeSidebarIfMobile() {22    if (window.innerWidth < RUSTDOC_MOBILE_BREAKPOINT) {23        updateLocalStorage("source-sidebar-show", "false");24    }25}2627/**28 * @param {rustdoc.Dir} elem29 * @param {HTMLElement} parent30 * @param {string} fullPath31 * @param {boolean} hasFoundFile32 *33 * @returns {boolean} - new value for hasFoundFile34 */35function createDirEntry(elem, parent, fullPath, hasFoundFile) {36    const dirEntry = document.createElement("details");37    const summary = document.createElement("summary");3839    dirEntry.className = "dir-entry";4041    fullPath += elem[NAME_OFFSET] + "/";4243    summary.innerText = elem[NAME_OFFSET];44    dirEntry.appendChild(summary);4546    const folders = document.createElement("div");47    folders.className = "folders";48    if (elem[DIRS_OFFSET]) {49        for (const dir of elem[DIRS_OFFSET]) {50            if (createDirEntry(dir, folders, fullPath, false)) {51                dirEntry.open = true;52                hasFoundFile = true;53            }54        }55    }56    dirEntry.appendChild(folders);5758    const files = document.createElement("div");59    files.className = "files";60    if (elem[FILES_OFFSET]) {61        const w = window.location.href.split("#")[0];62        for (const file_text of elem[FILES_OFFSET]) {63            const file = document.createElement("a");64            file.innerText = file_text;65            file.href = rootPath + "src/" + fullPath + file_text + ".html";66            file.addEventListener("click", closeSidebarIfMobile);67            if (!hasFoundFile && w === file.href) {68                file.className = "selected";69                dirEntry.open = true;70                hasFoundFile = true;71            }72            files.appendChild(file);73        }74    }75    dirEntry.appendChild(files);76    parent.appendChild(dirEntry);77    return hasFoundFile;78}7980window.rustdocCloseSourceSidebar = () => {81    removeClass(document.documentElement, "src-sidebar-expanded");82    updateLocalStorage("source-sidebar-show", "false");83};8485window.rustdocShowSourceSidebar = () => {86    addClass(document.documentElement, "src-sidebar-expanded");87    updateLocalStorage("source-sidebar-show", "true");88};8990window.rustdocToggleSrcSidebar = () => {91    if (document.documentElement.classList.contains("src-sidebar-expanded")) {92        window.rustdocCloseSourceSidebar();93    } else {94        window.rustdocShowSourceSidebar();95    }96};9798// This function is called from "src-files.js", generated in `html/render/write_shared.rs`.99// eslint-disable-next-line no-unused-vars100/**101 * @param {string} srcIndexStr - strinified json map from crate name to dir structure102 */103function createSrcSidebar(srcIndexStr) {104    const container = nonnull(document.querySelector("nav.sidebar"));105106    const sidebar = document.createElement("div");107    sidebar.id = "src-sidebar";108    const srcIndex = new Map(JSON.parse(srcIndexStr));109110    let hasFoundFile = false;111112    for (const [key, source] of srcIndex) {113        source[NAME_OFFSET] = key;114        hasFoundFile = createDirEntry(source, sidebar, "", hasFoundFile);115    }116117    container.appendChild(sidebar);118    // Focus on the current file in the source files sidebar.119    const selected_elem = sidebar.getElementsByClassName("selected")[0];120    if (typeof selected_elem !== "undefined") {121        // @ts-expect-error122        selected_elem.focus();123    }124}125126function highlightSrcLines() {127    const match = window.location.hash.match(/^#?(\d+)(?:-(\d+))?$/);128    if (!match) {129        return;130    }131    let from = parseInt(match[1], 10);132    let to = from;133    if (typeof match[2] !== "undefined") {134        to = parseInt(match[2], 10);135    }136    if (to < from) {137        const tmp = to;138        to = from;139        from = tmp;140    }141    const from_s = "" + from;142    let elem = document.getElementById(from_s);143    if (!elem) {144        return;145    }146    const x = document.getElementById(from_s);147    if (x) {148        x.scrollIntoView();149    }150    onEachLazy(document.querySelectorAll("a[data-nosnippet]"), e => {151        removeClass(e, "line-highlighted");152    });153    for (let i = from; i <= to; ++i) {154        elem = document.getElementById("" + i);155        if (!elem) {156            break;157        }158        addClass(elem, "line-highlighted");159    }160}161162const handleSrcHighlight = (function() {163    let prev_line_id = 0;164165    /** @type {function(string): void} */166    const set_fragment = name => {167        const x = window.scrollX,168            y = window.scrollY;169        if (browserSupportsHistoryApi()) {170            history.replaceState(null, "", "#" + name);171            highlightSrcLines();172        } else {173            location.replace("#" + name);174        }175        // Prevent jumps when selecting one or many lines176        window.scrollTo(x, y);177    };178179    // @ts-expect-error180    return ev => {181        let cur_line_id = parseInt(ev.target.id, 10);182        // This event handler is attached to the entire line number column, but it should only183        // be run if one of the anchors is clicked. It also shouldn't do anything if the anchor184        // is clicked with a modifier key (to open a new browser tab).185        if (isNaN(cur_line_id) ||186            ev.ctrlKey ||187            ev.altKey ||188            ev.metaKey) {189            return;190        }191        ev.preventDefault();192193        if (ev.shiftKey && prev_line_id) {194            // Swap selection if needed195            if (prev_line_id > cur_line_id) {196                const tmp = prev_line_id;197                prev_line_id = cur_line_id;198                cur_line_id = tmp;199            }200201            set_fragment(prev_line_id + "-" + cur_line_id);202        } else {203            prev_line_id = cur_line_id;204205            set_fragment("" + cur_line_id);206        }207    };208}());209210window.addEventListener("hashchange", highlightSrcLines);211212onEachLazy(document.querySelectorAll("a[data-nosnippet]"), el => {213    el.addEventListener("click", handleSrcHighlight);214});215216highlightSrcLines();217218window.createSrcSidebar = createSrcSidebar;219})();