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<html>
<head>
<title>The source code</title>
<link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
<script type="text/javascript" src="../resources/prettify/prettify.js"></script>
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<pre class="prettyprint lang-js">
/* Fix for Opera, which does not seem to include the map function on Array's */
if (!Array.prototype.map) {
Array.prototype.map = function(fun){
var len = this.length;
if (typeof fun != 'function') {
throw new TypeError();
}
var res = new Array(len);
var thisp = arguments[1];
for (var i = 0; i < len; i++) {
if (i in this) {
res[i] = fun.call(thisp, this[i], i, this);
}
}
return res;
};
}
Ext.ns('Ext.ux.data');
<div id="cls-Ext.ux.data.PagingMemoryProxy"></div>/**
* @class Ext.ux.data.PagingMemoryProxy
* @extends Ext.data.MemoryProxy
* <p>Paging Memory Proxy, allows to use paging grid with in memory dataset</p>
*/
Ext.ux.data.PagingMemoryProxy = Ext.extend(Ext.data.MemoryProxy, {
constructor : function(data){
Ext.ux.data.PagingMemoryProxy.superclass.constructor.call(this);
this.data = data;
},
doRequest : function(action, rs, params, reader, callback, scope, options){
params = params ||
{};
var result;
try {
result = reader.readRecords(this.data);
}
catch (e) {
this.fireEvent('loadexception', this, options, null, e);
callback.call(scope, null, options, false);
return;
}
// filtering
if (params.filter !== undefined) {
result.records = result.records.filter(function(el){
if (typeof(el) == 'object') {
var att = params.filterCol || 0;
return String(el.data[att]).match(params.filter) ? true : false;
}
else {
return String(el).match(params.filter) ? true : false;
}
});
result.totalRecords = result.records.length;
}
// sorting
if (params.sort !== undefined) {
// use integer as params.sort to specify column, since arrays are not named
// params.sort=0; would also match a array without columns
var dir = String(params.dir).toUpperCase() == 'DESC' ? -1 : 1;
var fn = function(r1, r2){
return r1 < r2;
};
result.records.sort(function(a, b){
var v = 0;
if (typeof(a) == 'object') {
v = fn(a.data[params.sort], b.data[params.sort]) * dir;
}
else {
v = fn(a, b) * dir;
}
if (v == 0) {
v = (a.index < b.index ? -1 : 1);
}
return v;
});
}
// paging (use undefined cause start can also be 0 (thus false))
if (params.start !== undefined && params.limit !== undefined) {
result.records = result.records.slice(params.start, params.start + params.limit);
}
callback.call(scope, result, options, true);
}
});
//backwards compat.
Ext.data.PagingMemoryProxy = Ext.ux.data.PagingMemoryProxy;
</pre>
</body>
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