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<!-- xlsx.js (C) 2013-present  SheetJS http://sheetjs.com -->
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>SheetJS + canvas-datagrid Live Demo</title>
<style>
#drop{
	border:2px dashed #bbb;
	-moz-border-radius:5px;
	-webkit-border-radius:5px;
	border-radius:5px;
	padding:25px;
	text-align:center;
	font:20pt bold,"Vollkorn";color:#bbb
}
#b64data{
	width:100%;
}
a { text-decoration: none }
</style>
</head>
<body>
<pre>
<b><a href="http://sheetjs.com">SheetJS Data Preview Live Demo</a></b>

<a href="https://github.com/TonyGermaneri/canvas-datagrid">canvas-datagrid component library</a>

<a href="https://github.com/SheetJS/js-xlsx">Source Code Repo</a>
<a href="https://github.com/SheetJS/js-xlsx/issues">Issues?  Something look weird?  Click here and report an issue</a>

<div id="drop">Drop a spreadsheet file here to see sheet data</div>
<input type="file" name="xlfile" id="xlf" /> ... or click here to select a file
<textarea id="b64data">... or paste a base64-encoding here</textarea>
<input type="button" id="dotext" value="Click here to process the base64 text" onclick="b64it();"/><br />
<b>Advanced Demo Options:</b>
Use readAsBinaryString: (when available) <input type="checkbox" name="userabs" checked>
</pre>
<p><input type="submit" value="Export to XLSX!" id="xport" onclick="doit();" disabled="true"></p>
<div id="htmlout"></div>
<br />
<script src="https://unpkg.com/canvas-datagrid/dist/canvas-datagrid.js"></script>
<script type="text/javascript" src="https://rawgit.com/eligrey/Blob.js/master/Blob.js"></script>
<script type="text/javascript" src="https://rawgit.com/eligrey/FileSaver.js/master/FileSaver.js"></script>
<script src="xlsx.full.min.js"></script>
<script>
/*jshint browser:true */
/* eslint-env browser */
/* eslint no-use-before-define:0 */
/*global Uint8Array, Uint16Array, ArrayBuffer */
/*global XLSX */
var X = XLSX;

var rABS = typeof FileReader !== "undefined" && typeof FileReader.prototype !== "undefined" && typeof FileReader.prototype.readAsBinaryString !== "undefined";
if(!rABS) {
	document.getElementsByName("userabs")[0].disabled = true;
	document.getElementsByName("userabs")[0].checked = false;
}

var wtf_mode = false;

function fixdata(data) {
	var o = "", l = 0, w = 10240;
	for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint8Array(data.slice(l*w,l*w+w)));
	o+=String.fromCharCode.apply(null, new Uint8Array(data.slice(l*w)));
	return o;
}

function ab2str(data) {
	var o = "", l = 0, w = 10240;
	for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint16Array(data.slice(l*w,l*w+w)));
	o+=String.fromCharCode.apply(null, new Uint16Array(data.slice(l*w)));
	return o;
}

function s2ab(s) {
	var b = new ArrayBuffer(s.length), v = new Uint8Array(b);
	for (var i=0; i != s.length; ++i) v[i] = s.charCodeAt(i) & 0xFF;
	return b;
}

function get_radio_value( radioName ) {
	var radios = document.getElementsByName( radioName );
	for( var i = 0; i < radios.length; i++ ) {
		if( radios[i].checked || radios.length === 1 ) {
			return radios[i].value;
		}
	}
}

var tarea = document.getElementById('b64data');
function b64it() {
	if(typeof console !== 'undefined') console.log("onload", new Date());
	var wb = X.read(tarea.value, {type: 'base64',WTF:wtf_mode});
	process_wb(wb);
}
window.b64it = b64it;

var global_wb;
var cDg;
function process_wb(wb) {
	global_wb = wb;
	var ws = wb.Sheets[wb.SheetNames[0]];
	var data = XLSX.utils.sheet_to_json(ws, {header:1});
	if(!cDg) cDg = canvasDatagrid({ parentNode:document.getElementById('htmlout'), data:data });
	else cDg.data = data;
	var range = XLSX.utils.decode_range(ws['!ref']);
	for(var i = range.s.c; i <= range.e.c; ++i) cDg.schema[i - range.s.c].title = XLSX.utils.encode_col(i);
	document.getElementById('xport').disabled = false;
	if(typeof console !== 'undefined') console.log("output", new Date());
}
function doit() {
	var new_wb = XLSX.utils.book_new();
	var new_ws = XLSX.utils.aoa_to_sheet(cDg.data);
	XLSX.utils.book_append_sheet(new_wb, new_ws, 'SheetJS');
	var wbout = XLSX.write(new_wb, {bookType:'xlsx', bookSST:true, type:'binary'});
	var fname = 'sheetjs.xlsx';
	try {
		saveAs(new Blob([s2ab(wbout)],{type:"application/octet-stream"}), fname);
	} catch(e) { if(typeof console != 'undefined') console.log(e, wbout); }
}

var drop = document.getElementById('drop');
function handleDrop(e) {
	e.stopPropagation();
	e.preventDefault();
	rABS = document.getElementsByName("userabs")[0].checked;
	var files = e.dataTransfer.files;
	var f = files[0];
	{
		var reader = new FileReader();
		//var name = f.name;
		reader.onload = function(e) {
			if(typeof console !== 'undefined') console.log("onload", new Date(), rABS);
			var data = e.target.result;
			{
				var wb;
				if(rABS) {
					wb = X.read(data, {type: 'binary'});
				} else {
					var arr = fixdata(data);
					wb = X.read(btoa(arr), {type: 'base64'});
				}
				process_wb(wb);
			}
		};
		if(rABS) reader.readAsBinaryString(f);
		else reader.readAsArrayBuffer(f);
	}
}

function handleDragover(e) {
	e.stopPropagation();
	e.preventDefault();
	e.dataTransfer.dropEffect = 'copy';
}

if(drop.addEventListener) {
	drop.addEventListener('dragenter', handleDragover, false);
	drop.addEventListener('dragover', handleDragover, false);
	drop.addEventListener('drop', handleDrop, false);
}


var xlf = document.getElementById('xlf');
function handleFile(e) {
	rABS = document.getElementsByName("userabs")[0].checked;
	var files = e.target.files;
	var f = files[0];
	{
		var reader = new FileReader();
		//var name = f.name;
		reader.onload = function(e) {
			if(typeof console !== 'undefined') console.log("onload", new Date(), rABS);
			var data = e.target.result;
			{
				var wb;
				if(rABS) {
					wb = X.read(data, {type: 'binary'});
				} else {
					var arr = fixdata(data);
					wb = X.read(btoa(arr), {type: 'base64'});
				}
				process_wb(wb);
			}
		};
		if(rABS) reader.readAsBinaryString(f);
		else reader.readAsArrayBuffer(f);
	}
}

if(xlf.addEventListener) xlf.addEventListener('change', handleFile, false);
</script>
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	var _gaq = _gaq || [];
	_gaq.push(['_setAccount', 'UA-36810333-1']);
	_gaq.push(['_trackPageview']);

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		var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
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