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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>qooxdoo » Demo</title>
<link type="text/css" rel="stylesheet" href="../../resource/css/layout.css"/>
<!--[if IE]>
<link type="text/css" rel="stylesheet" href="../../resource/css/layout_ie.css"/>
<![endif]-->
<script type="text/javascript" src="../../script/qx.js"></script>
</head>
<body>
<script type="text/javascript" src="../../script/layout.js"></script>
<style type="text/css">*{ font-size: 10px; font-family: Verdana }</style>
<div id="demoDescription">
<p>Test table.</p>
</div>
<textarea id="info" style="position:absolute; top:48px; left:20px; width:600px;height:50px;border:1px solid black"></textarea>
<div id="view" style="position:absolute;top:148px;left:20px;width:400px;height:500px;border:1px solid black"></div>
<div id="scroller" style="position: absolute; top:148px; left:420px;height:500px;width:24px;border:1px solid black;overflow:scroll"><div id="scrollerContent" style="width:1px;height:5000px"></div></div>
<script type="text/javascript">
qx.core.Init.getInstance().defineMain(function()
{
var updateCount = 0;
var tableHeight = 512;
var entryCount = 1000;
var rowHeight = 16;
var rowCount = Math.floor(tableHeight / rowHeight);
var view = document.getElementById("view");
var info = document.getElementById("info");
var scroller = document.getElementById("scroller");
var scrollerContent = document.getElementById("scrollerContent");
view.style.height = scroller.style.height = tableHeight + "px";
scrollerContent.style.height = Math.round(entryCount / rowCount * tableHeight) + "px";
var data = [];
for (var i=0; i<1000; i++) {
data.push({ col1 : "hello" + i, col2 : "world" + i, col3 : "foo" + i, col4 : "bar" + i, col5 : "baz" + i });
};
var cache = [];
var undef = "undefined";
var HTML =
{
table_start : "<table><tbody>",
table_end : "</tbody></table>",
tr_start : "<tr>",
tr_start_open : "<tr ",
tr_start_close : ">",
tr_end : "<tr>",
td_start : "<td>",
td_end : "</td>"
};
function arrayAppend(arr, a) {
Array.prototype.push.apply(arr, a);
};
function getCellHtml(cdata)
{
var html = [ HTML.td_start, cdata, HTML.td_end ];
return html;
};
function getRowHtml(rdata, nr)
{
if (typeof cache[nr] != undef) {
return cache[nr];
};
var html = [];
html.push(HTML.tr_start_open);
if (nr % 2 == 0)
{
html.push("style='background-color:#fff'");
};
html.push(HTML.tr_start_close);
for (var row in rdata) {
arrayAppend(html, getCellHtml(rdata[row]));
};
html.push(HTML.tr_stop);
cache[nr] = html;
return html;
};
function buildTableHtml(start, len)
{
var ttstart = (new Date).valueOf();
var html = [];
html.push(HTML.table_start);
for (var i=start, s=start+len; i<s; i++) {
arrayAppend(html, getRowHtml(data[i], i));
};
html.push(HTML.table_end);
view.innerHTML = html.join("");
updateCount++;
var ttend = (new Date).valueOf();
info.value = "Update: " + updateCount + "\nRows: " + start + " - " + (start+len) + "\n" + (ttend-ttstart) + "ms\n";
};
function doscroll() {
buildTableHtml(Math.floor(scroller.scrollTop/rowHeight), rowCount);
};
qx.dom.EventRegistration.addEventListener(scroller, "scroll", doscroll);
doscroll();
});
</script>
</body>
</html>
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