97 lines
3.1 KiB
JavaScript
97 lines
3.1 KiB
JavaScript
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/*!
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* Ext JS Library 3.0.3
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* Copyright(c) 2006-2009 Ext JS, LLC
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* licensing@extjs.com
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* http://www.extjs.com/license
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*/
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/* Fix for Opera, which does not seem to include the map function on Array's */
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if (!Array.prototype.map) {
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Array.prototype.map = function(fun){
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var len = this.length;
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if (typeof fun != 'function') {
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throw new TypeError();
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}
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var res = new Array(len);
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var thisp = arguments[1];
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for (var i = 0; i < len; i++) {
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if (i in this) {
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res[i] = fun.call(thisp, this[i], i, this);
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}
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}
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return res;
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};
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}
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Ext.ns('Ext.ux.data');
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/**
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* @class Ext.ux.data.PagingMemoryProxy
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* @extends Ext.data.MemoryProxy
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* <p>Paging Memory Proxy, allows to use paging grid with in memory dataset</p>
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*/
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Ext.ux.data.PagingMemoryProxy = Ext.extend(Ext.data.MemoryProxy, {
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constructor : function(data){
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Ext.ux.data.PagingMemoryProxy.superclass.constructor.call(this);
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this.data = data;
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},
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doRequest : function(action, rs, params, reader, callback, scope, options){
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params = params ||
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{};
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var result;
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try {
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result = reader.readRecords(this.data);
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}
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catch (e) {
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this.fireEvent('loadexception', this, options, null, e);
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callback.call(scope, null, options, false);
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return;
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}
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// filtering
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if (params.filter !== undefined) {
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result.records = result.records.filter(function(el){
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if (typeof(el) == 'object') {
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var att = params.filterCol || 0;
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return String(el.data[att]).match(params.filter) ? true : false;
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}
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else {
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return String(el).match(params.filter) ? true : false;
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}
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});
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result.totalRecords = result.records.length;
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}
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// sorting
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if (params.sort !== undefined) {
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// use integer as params.sort to specify column, since arrays are not named
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// params.sort=0; would also match a array without columns
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var dir = String(params.dir).toUpperCase() == 'DESC' ? -1 : 1;
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var fn = function(r1, r2){
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return r1 < r2;
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};
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result.records.sort(function(a, b){
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var v = 0;
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if (typeof(a) == 'object') {
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v = fn(a.data[params.sort], b.data[params.sort]) * dir;
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}
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else {
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v = fn(a, b) * dir;
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}
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if (v == 0) {
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v = (a.index < b.index ? -1 : 1);
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}
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return v;
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});
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}
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// paging (use undefined cause start can also be 0 (thus false))
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if (params.start !== undefined && params.limit !== undefined) {
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result.records = result.records.slice(params.start, params.start + params.limit);
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}
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callback.call(scope, result, options, true);
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}
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});
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//backwards compat.
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Ext.data.PagingMemoryProxy = Ext.ux.data.PagingMemoryProxy;
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