/*

 Copyright 2019-2020 The Go Authors. All rights reserved.
 Use of this source code is governed by a BSD-style
 license that can be found in the LICENSE file.
*/
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(function(b,c){"object"===typeof exports&&"undefined"!==typeof module?module.exports=c():"function"===typeof define&&define.amd?define(c):(b=b||self,b.dialogPolyfill=c())})(this,function(){function b(a){for(;a&&a!==document.body;){var d=window.getComputedStyle(a),h=function(p,n){return!(void 0===d[p]||d[p]===n)};if(1>d.opacity||h("zIndex","auto")||h("transform","none")||h("mixBlendMode","normal")||h("filter","none")||h("perspective","none")||"isolate"===d.isolation||"fixed"===d.position||"touch"===
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k.DialogManager.prototype.updateStacking=function(){for(var a=this.zIndexHigh_,d=0,h;h=this.pendingDialogStack[d];++d)h.updateZIndex(--a,--a),0===d&&(this.overlay.style.zIndex=--a);(a=this.pendingDialogStack[0])?(a.dialog.parentNode||document.body).appendChild(this.overlay):this.overlay.parentNode&&this.overlay.parentNode.removeChild(this.overlay)};k.DialogManager.prototype.containedByTopDialog_=function(a){for(;a=c(a);){for(var d=0,h;h=this.pendingDialogStack[d];++d)if(h.dialog===a)return 0===d;
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(this.zIndexHigh_-this.zIndexLow_)/2-1)return!1;1===this.pendingDialogStack.unshift(a)&&this.blockDocument();this.updateStacking();return!0};k.DialogManager.prototype.removeDialog=function(a){a=this.pendingDialogStack.indexOf(a);-1!==a&&(this.pendingDialogStack.splice(a,1),0===this.pendingDialogStack.length&&this.unblockDocument(),this.updateStacking())};k.dm=new k.DialogManager;k.formSubmitter=null;k.useValue=null;if(void 0===window.HTMLDialogElement){var q=document.createElement("form");q.setAttribute("method",
"dialog");if("dialog"!==q.method&&(q=Object.getOwnPropertyDescriptor(HTMLFormElement.prototype,"method"))){var u=q.get;q.get=function(){return f(this)?"dialog":u.call(this)};var v=q.set;q.set=function(a){return"string"===typeof a&&"dialog"===a.toLowerCase()?this.setAttribute("method",a):v.call(this,a)};Object.defineProperty(HTMLFormElement.prototype,"method",q)}document.addEventListener("click",function(a){k.formSubmitter=null;k.useValue=null;if(!a.defaultPrevented){var d=a.target;if(d&&f(d.form)){if(!("submit"===
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a.close();k.formSubmitter=null}}},!1)}return k});var jumpDialog=document.querySelector(".JumpDialog"),jumpBody=jumpDialog.querySelector(".JumpDialog-body"),jumpList=jumpDialog.querySelector(".JumpDialog-list"),jumpFilter=jumpDialog.querySelector(".JumpDialog-input"),searchInput=document.querySelector(".js-searchFocus");jumpDialog.showModal||dialogPolyfill.registerDialog(jumpDialog);var jumpListItems;
function collectJumpListItems(){for(var b=[],c=document.querySelector(".js-documentation"),e=$jscomp.makeIterator(c.querySelectorAll("[data-kind]")),f=e.next();!f.done;f=e.next())b.push(newJumpListItem(f.value));0==b.length&&(b=collectJumpListItemsFallback(c));c=$jscomp.makeIterator(b);for(e=c.next();!e.done;e=c.next())e.value.link.addEventListener("click",function(){jumpDialog.close()});b.sort(function(g,m){return g.lower.localeCompare(m.lower)});return b}
function collectJumpListItemsFallback(b){var c=[],e={};b=$jscomp.makeIterator(b.querySelectorAll("*[id]"));for(var f=b.next();!f.done;f=b.next()){f=f.value;var g=f.getAttribute("id");!e[g]&&/^[^_][^-]*$/.test(g)&&(e[g]=!0,c.push(newJumpListItem(f)))}return c}
function newJumpListItem(b){var c=document.createElement("a"),e=b.getAttribute("id");c.setAttribute("href","#"+e);c.setAttribute("tabindex","-1");var f=b.getAttribute("data-kind");f||(f=guessKind(b));return{link:c,name:e,kind:f,lower:e.toLowerCase()}}
function guessKind(b){switch(b.getAttribute("class")){case "Documentation-functionHeader":case "Documentation-typeFuncHeader":return"function";case "Documentation-typeHeader":return"type";case "Documentation-typeMethodHeader":return"method";default:switch(b.closest("section").getAttribute("class")){case "Documentation-variables":return"variable";case "Documentation-constants":return"constant";case "Documentation-types":return"field";default:return""}}}var lastFilterValue,activeJumpItem=-1;
function updateJumpList(b){lastFilterValue=b;jumpListItems||(jumpListItems=collectJumpListItems());for(setActiveJumpItem(-1);jumpList.firstChild;)jumpList.firstChild.remove();for(var c=new RegExp(b.replace(/([.*+?^=!:${}()|\[\]\/\\])/g,"\\$1"),"gi"),e=$jscomp.makeIterator(jumpListItems),f=e.next();!f.done;f=e.next()){f=f.value;var g=f.name;if(b&&(g=g.replace(c,function(m){return"<b>"+m+"</b>"}),g==f.name))continue;f.link.innerHTML=g+" <i>"+f.kind+"</i>";jumpList.appendChild(f.link)}jumpBody.scrollTop=
0;0<jumpList.children.length&&setActiveJumpItem(0)}function setActiveJumpItem(b){var c=jumpList.children;0<=activeJumpItem&&c[activeJumpItem].classList.remove("JumpDialog-active");b>=c.length&&(b=c.length-1);if(0<=b){c[b].classList.add("JumpDialog-active");var e=c[b].offsetTop-c[0].offsetTop;c=e+c[b].clientHeight;e<jumpBody.scrollTop?jumpBody.scrollTop=e:c>jumpBody.scrollTop+jumpBody.clientHeight&&(jumpBody.scrollTop=c-jumpBody.clientHeight)}activeJumpItem=b}
function incActiveJumpItem(b){0>activeJumpItem||(b=activeJumpItem+b,0>b&&(b=0),setActiveJumpItem(b))}jumpFilter.addEventListener("keyup",function(b){jumpFilter.value.toUpperCase()!=lastFilterValue.toUpperCase()&&updateJumpList(jumpFilter.value)});jumpFilter.addEventListener("keydown",function(b){switch(b.which){case 38:incActiveJumpItem(-1);b.preventDefault();break;case 40:incActiveJumpItem(1);b.preventDefault();break;case 13:0<=activeJumpItem&&jumpList.children[activeJumpItem].click()}});
var shortcutsDialog=document.querySelector(".ShortcutsDialog");shortcutsDialog.showModal||dialogPolyfill.registerDialog(shortcutsDialog);
document.addEventListener("keypress",function(b){if(!jumpDialog.open&&!shortcutsDialog.open){var c=b.target.tagName;if("INPUT"!=c&&"SELECT"!=c&&"TEXTAREA"!=c&&!(b.target.contentEditable&&"true"==b.target.contentEditable||b.metaKey||b.ctrlKey))switch(String.fromCharCode(b.which)){case "f":case "F":b.preventDefault();jumpFilter.value="";jumpDialog.showModal();updateJumpList("");break;case "?":shortcutsDialog.showModal();break;case "/":searchInput&&!window.navigator.userAgent.includes("Firefox")&&(b.preventDefault(),
searchInput.focus())}}});var jumpOutlineInput=document.querySelector(".js-jumpToInput");jumpOutlineInput&&jumpOutlineInput.addEventListener("click",function(){jumpDialog.showModal()});