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const menu_id = "docs_menu";
const filter_id = "search_input";
var last_active_hash = "";
window.onload = function()
{
let new_hash = window.location.hash.substr(1);
UpdateActiveDoc(last_active_hash, new_hash);
last_active_hash = new_hash;
UpdateListByFilter();
};
window.onhashchange = function()
{
let new_hash = window.location.hash.substr(1);
UpdateActiveDoc(last_active_hash, new_hash);
last_active_hash = new_hash;
}
function StringMatch4coderFuzzy(a, b)
{
let match = true;
let b_upper = b.toUpperCase();
let a_substrings = a.toUpperCase().split(/[ _*]+/);
let minimum_index = 0;
for(let i = 0; i < a_substrings.length; ++i)
{
if(a_substrings[i].length > 0)
{
let index_of_substring = b_upper.indexOf(a_substrings[i], minimum_index);
if(index_of_substring < 0 || index_of_substring < minimum_index)
{
match = false;
break;
}
minimum_index = index_of_substring + a_substrings[i].length - 1;
}
}
return match;
}
function UpdateListByFilter()
{
let ul = document.getElementById(menu_id);
let li = ul.getElementsByTagName("li");
let input = document.getElementById(filter_id);
let filter = input.value.toUpperCase();
for(let i = 0; i < li.length; i++)
{
if(filter.length > 0)
{
let a = li[i].getElementsByTagName("a")[0];
if(StringMatch4coderFuzzy(filter, a.innerHTML))
{
li[i].style.display = "";
}
else
{
li[i].style.display = "none";
}
}
else
{
li[i].style.display = "";
}
}
}
function SearchInput(event)
{
UpdateListByFilter();
}
function SearchKeyDown(event)
{
if(event.keyCode == 13)
{
event.preventDefault();
let ul = document.getElementById(menu_id);
let li = ul.getElementsByTagName("li");
for (let i = 0; i < li.length; i++)
{
if(li[i].style.display == "")
{
let new_hash = li[i].getElementsByTagName("a")[0].innerHTML;
UpdateActiveDoc(last_active_hash, new_hash);
window.location.hash = new_hash;
break;
}
}
}
}
function UpdateActiveDoc(old_hash, new_hash)
{
if(old_hash != null && old_hash != undefined && old_hash.length > 0)
{
document.getElementById(old_hash).classList.add("hidden");
}
if(new_hash != null && new_hash != undefined && new_hash.length > 0)
{
document.getElementById(new_hash).classList.remove("hidden");
}
document.getElementById(filter_id).focus();
}
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