Subversion Repositories eFlore/Applications.cel

/*
 * Ext JS Library 2.0.2
 * Copyright(c) 2006-2008, Ext JS, LLC.
 * licensing@extjs.com
 * 
 * http://extjs.com/license
 */

/* 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;
     };
}

/* Paging Memory Proxy, allows to use paging grid with in memory dataset */
Ext.data.PagingMemoryProxy = function(data) {
        Ext.data.PagingMemoryProxy.superclass.constructor.call(this);
        this.data = data;
};

Ext.extend(Ext.data.PagingMemoryProxy, Ext.data.MemoryProxy, {
        load : function(params, reader, callback, scope, arg) {
                params = params || {};
                var result;
                try {
                        result = reader.readRecords(this.data);
                }catch(e){
                        this.fireEvent("loadexception", this, arg, null, e);
                        callback.call(scope, null, arg, 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, arg, true);
        }
});