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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Unicode character lookup</title>
<style>
body {
font-size: 12pt;
font-family: sans-serif;
}
.table > div:nth-child(odd) {
background-color: #eee;
}
.table {
max-height: 300px;
overflow-y: scroll;
}
.invisible {
display: none;
}
</style>
<script>
function do_lookup(override) {
var input;
if (override != null) {
if (override.length == 0) return;
input = override;
document.getElementById("input").value = override;
} else {
input = document.getElementById("input").value;
if (input.length == 0) return;
}
location.hash = input;
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == 4) {
if (xhr.status == 200) {
handleResponse(JSON.parse(xhr.responseText), input);
} else {
alert("Request failed: " + xhr.responseText);
}
}
};
xhr.open("GET", "/unicode/lookup/" + encodeURIComponent(input));
xhr.responseType = "text";
xhr.setRequestHeader("Content-Type", "text/plain");
xhr.send();
}
function handleResponse(json, input) {
var elem;
/* elem = document.getElementById("json");
elem.innerHTML = "";
elem.appendChild(document.createTextNode(JSON.stringify(json))); */
var index_container = document.getElementById("index_container");
if ("index" in json) {
index_container.classList.remove("invisible");
document.getElementById("index_input").innerHTML = input;
elem = document.getElementById("index");
elem.innerHTML = "";
elem.appendChild(makeCodepointDiv(json["index"]));
} else if (!index_container.classList.contains("invisible")) {
index_container.classList.add("invisible");
}
var keys = ["codepoints", "search"];
for (var i = 0; i < keys.length; i++) {
document.getElementById(keys[i] + "_num").innerHTML = "(" + json[keys[i]].length + ")";
elem = document.getElementById(keys[i]);
elem.innerHTML = "";
for (var j = 0; j < json[keys[i]].length; j++) {
elem.appendChild(makeCodepointDiv(json[keys[i]][j]));
}
}
}
function makeCodepointDiv(row) {
var div = document.createElement("div");
populateCodepoint(div, row);
return div;
}
function populateCodepoint(div, row) {
var span = document.createElement("span");
span.setAttribute("style", "display: inline-block; width: 7em; font-weight: bold;");
span.appendChild(document.createTextNode("U+" + row[0]));
div.appendChild(span);
span = document.createElement("span");
span.setAttribute("style", "display: inline-block; width: 2em;");
span.appendChild(document.createTextNode(String.fromCodePoint(parseInt(row[0], 16))));
div.appendChild(span);
span = document.createElement("span");
span.setAttribute("style", "display: inline-block;");
span.appendChild(document.createTextNode(row[1]));
div.appendChild(span);
}
window.addEventListener("load", function() {
if (location.hash.length > 0) {
do_lookup(decodeURIComponent(location.hash.slice(1)));
}
document.getElementById("input").focus();
});
</script>
</head>
<body>
<h1>Unicode character lookup</h1>
<input type="text" id="input" placeholder="Character(s) to look up" onkeypress="if (event.keyCode == 10 || event.keyCode == 13) do_lookup()">
<input type="button" onclick="do_lookup()" value="Lookup">
<br>
<!-- <pre id="json"></pre><br> -->
<div id="index_container" class="invisible">
<h3>Codepoint <span id="index_input"></span></h3>
<div id="index" class="table"></div>
</div>
<h3>Codepoints <span id="codepoints_num"></span></h3>
<div id="codepoints" class="table"></div>
<h3>Found in descriptions <span id="search_num"></span></h3>
<div id="search" class="table"></div>
</body>
</html>
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