rCore-Tutorial-v3/ch9-gui-dev/main.js

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"use strict";function getVar(name){const el=document.getElementById("rustdoc-vars");if(el){return el.attributes["data-"+name].value}else{return null}}function resourcePath(basename,extension){return getVar("root-path")+basename+getVar("resource-suffix")+extension}function hideMain(){addClass(document.getElementById(MAIN_ID),"hidden")}function showMain(){removeClass(document.getElementById(MAIN_ID),"hidden")}function elemIsInParent(elem,parent){while(elem&&elem!==document.body){if(elem===parent){return true}elem=elem.parentElement}return false}function blurHandler(event,parentElem,hideCallback){if(!elemIsInParent(document.activeElement,parentElem)&&!elemIsInParent(event.relatedTarget,parentElem)){hideCallback()}}(function(){window.rootPath=getVar("root-path");window.currentCrate=getVar("current-crate")}());function setMobileTopbar(){const mobileLocationTitle=document.querySelector(".mobile-topbar h2.location");const locationTitle=document.querySelector(".sidebar h2.location");if(mobileLocationTitle&&locationTitle){mobileLocationTitle.innerHTML=locationTitle.innerHTML}}function getVirtualKey(ev){if("key"in ev&&typeof ev.key!=="undefined"){return ev.key}const c=ev.charCode||ev.keyCode;if(c===27){return"Escape"}return String.fromCharCode(c)}const MAIN_ID="main-content";const SETTINGS_BUTTON_ID="settings-menu";const ALTERNATIVE_DISPLAY_ID="alternative-display";const NOT_DISPLAYED_ID="not-displayed";const HELP_BUTTON_ID="help-button";function getSettingsButton(){return document.getElementById(SETTINGS_BUTTON_ID)}function getHelpButton(){return document.getElementById(HELP_BUTTON_ID)}function getNakedUrl(){return window.location.href.split("?")[0].split("#")[0]}function insertAfter(newNode,referenceNode){referenceNode.parentNode.insertBefore(newNode,referenceNode.nextSibling)}function getOrCreateSection(id,classes){let el=document.getElementById(id);if(!el){el=document.createElement("section");el.id=id;el.className=classes;insertAfter(el,document.getElementById(MAIN_ID))}return el}function getAlternativeDisplayElem(){return getOrCreateSection(ALTERNATIVE_DISPLAY_ID,"content hidden")}function getNotDisplayedElem(){return getOrCreateSection(NOT_DISPLAYED_ID,"hidden")}function switchDisplayedElement(elemToDisplay){const el=getAlternativeDisplayElem();if(el.children.length>0){getNotDisplayedElem().appendChild(el.firstElementChild)}if(elemToDisplay===null){addClass(el,"hidden");showMain();return}el.appendChild(elemToDisplay);hideMain();removeClass(el,"hidden")}function browserSupportsHistoryApi(){return window.history&&typeof window.history.pushState==="function"}function loadCss(cssFileName){const link=document.createElement("link");link.href=resourcePath(cssFileName,".css");link.type="text/css";link.rel="stylesheet";document.getElementsByTagName("head")[0].appendChild(link)}(function(){function loadScript(url){const script=document.createElement("script");script.src=url;document.head.append(script)}getSettingsButton().onclick=event=>{addClass(getSettingsButton(),"rotate");event.preventDefault();loadCss("settings");loadScript(resourcePath("settings",".js"))};window.searchState={loadingText:"Loading search results...",input:document.getElementsByClassName("search-input")[0],outputElement:()=>{let el=document.getElementById("search");if(!el){el=document.createElement("section");el.id="search";getNotDisplayedElem().appendChild(el)}return el},title:document.title,titleBeforeSearch:document.title,timeout:null,currentTab:0,focusedByTab:[null,null,null],clearInputTimeout:()=>{if(searchState.timeout!==null){clearTimeout(searchState.timeout);searchState.timeout=null}},isDisplayed:()=>searchState.outputElement().parentElement.id===ALTERNATIVE_DISPLAY_ID,focus:()=>{searchState.input.focus()},defocus:()=>{searchState.input.blur()},showResults:search=>{if(search===null||typeof search==="undefined"){search=searchState.outputElement()}switchDisplayedElement(search);searchState.mouseMovedAfterSearch=false;document.title=searchState.title},hideResults:()=>{switchDisplayedElement(null);document.title=searchState.titleBeforeSearch;if(browserSupports
<a href=\"https://doc.rust-lang.org/rustdoc/\">the rustdoc book</a>.";const shortcuts=[["?","Show this help dialog"],["S","Focus the search field"],["↑","Move up in search results"],["↓","Move down in search results"],["← / →","Switch result tab (when results focused)"],["&#9166;","Go to active search result"],["+","Expand all sections"],["-","Collapse all sections"],].map(x=>"<dt>"+x[0].split(" ").map((y,index)=>((index&1)===0?"<kbd>"+y+"</kbd>":" "+y+" ")).join("")+"</dt><dd>"+x[1]+"</dd>").join("");const div_shortcuts=document.createElement("div");addClass(div_shortcuts,"shortcuts");div_shortcuts.innerHTML="<h2>Keyboard Shortcuts</h2><dl>"+shortcuts+"</dl></div>";const infos=["Prefix searches with a type followed by a colon (e.g., <code>fn:</code>) to \
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