librepages/source-script.js

"use strict";(function(){const rootPath=document.getElementById("rustdoc-vars").attributes["data-root-path"].value;const NAME_OFFSET=0;const DIRS_OFFSET=1;const FILES_OFFSET=2;function closeSidebarIfMobile(){if(window.innerWidth<window.RUSTDOC_MOBILE_BREAKPOINT){updateLocalStorage("source-sidebar-show","false")}}function createDirEntry(elem,parent,fullPath,hasFoundFile){const dirEntry=document.createElement("details");const summary=document.createElement("summary");dirEntry.className="dir-entry";fullPath+=elem[NAME_OFFSET]+"/";summary.innerText=elem[NAME_OFFSET];dirEntry.appendChild(summary);const folders=document.createElement("div");folders.className="folders";if(elem[DIRS_OFFSET]){for(const dir of elem[DIRS_OFFSET]){if(createDirEntry(dir,folders,fullPath,false)){dirEntry.open=true;hasFoundFile=true}}}dirEntry.appendChild(folders);const files=document.createElement("div");files.className="files";if(elem[FILES_OFFSET]){for(const file_text of elem[FILES_OFFSET]){const file=document.createElement("a");file.innerText=file_text;file.href=rootPath+"src/"+fullPath+file_text+".html";file.addEventListener("click",closeSidebarIfMobile);const w=window.location.href.split("#")[0];if(!hasFoundFile&&w===file.href){file.className="selected";dirEntry.open=true;hasFoundFile=true}files.appendChild(file)}}dirEntry.appendChild(files);parent.appendChild(dirEntry);return hasFoundFile}function toggleSidebar(){const child=this.parentNode.children[0];if(child.innerText===">"){window.rustdocMobileScrollLock();addClass(document.documentElement,"source-sidebar-expanded");child.innerText="<";updateLocalStorage("source-sidebar-show","true")}else{window.rustdocMobileScrollUnlock();removeClass(document.documentElement,"source-sidebar-expanded");child.innerText=">";updateLocalStorage("source-sidebar-show","false")}}function createSidebarToggle(){const sidebarToggle=document.createElement("div");sidebarToggle.id="sidebar-toggle";const inner=document.createElement("button");if(getCurrentValue("source-sidebar-show")==="true"){inner.innerText="<"}else{inner.innerText=">"}inner.onclick=toggleSidebar;sidebarToggle.appendChild(inner);return sidebarToggle}function createSourceSidebar(){const container=document.querySelector("nav.sidebar");const sidebarToggle=createSidebarToggle();container.insertBefore(sidebarToggle,container.firstChild);const sidebar=document.createElement("div");sidebar.id="source-sidebar";let hasFoundFile=false;const title=document.createElement("div");title.className="title";title.innerText="Files";sidebar.appendChild(title);Object.keys(sourcesIndex).forEach(key=>{sourcesIndex[key][NAME_OFFSET]=key;hasFoundFile=createDirEntry(sourcesIndex[key],sidebar,"",hasFoundFile)});container.appendChild(sidebar);const selected_elem=sidebar.getElementsByClassName("selected")[0];if(typeof selected_elem!=="undefined"){selected_elem.focus()}}const lineNumbersRegex=/^#?(\d+)(?:-(\d+))?$/;function highlightSourceLines(match){if(typeof match==="undefined"){match=window.location.hash.match(lineNumbersRegex)}if(!match){return}let from=parseInt(match[1],10);let to=from;if(typeof match[2]!=="undefined"){to=parseInt(match[2],10)}if(to<from){const tmp=to;to=from;from=tmp}let elem=document.getElementById(from);if(!elem){return}const x=document.getElementById(from);if(x){x.scrollIntoView()}onEachLazy(document.getElementsByClassName("src-line-numbers"),e=>{onEachLazy(e.getElementsByTagName("span"),i_e=>{removeClass(i_e,"line-highlighted")})});for(let i=from;i<=to;++i){elem=document.getElementById(i);if(!elem){break}addClass(elem,"line-highlighted")}}const handleSourceHighlight=(function(){let prev_line_id=0;const set_fragment=name=>{const x=window.scrollX,y=window.scrollY;if(browserSupportsHistoryApi()){history.replaceState(null,null,"#"+name);highlightSourceLines()}else{location.replace("#"+name)}window.scrollTo(x,y)};return ev=>{let cur_line_id=parseInt(ev.target.id,10);if(isNaN(cur_line_id)){return}ev.preventDefault();if(ev.shiftKey&&prev_line_id){if(prev_line_id>cur_line_id){const tmp=prev_line_id;prev_line_id=cur_line_id;cur_line_id=tmp}set_fragment(prev_line_id+"-"+cur_line_id)}else{prev_line_id=cur_line_id;set_fragment(cur_line_id)}}}());window.addEventListener("hashchange",()=>{const match=window.location.hash.match(lineNumbersRegex);if(match){return highlightSourceLines(match)}});onEachLazy(document.getElementsByClassName("src-line-numbers"),el=>{el.addEventListener("click",handleSourceHighlight)});highlightSourceLines();window.createSourceSidebar=createSourceSidebar})()