source: branches/2.2.0.1/calendar/js/dhtmlx/sources/ext/ext_serialize.js @ 4001

//redefine this method, if you want to provide a custom set of attributes for serialization
scheduler.data_attributes=function(){
        var attrs = [];
        var format = scheduler.templates.xml_format;
        for (var a in this._events){
                var ev = this._events[a];
                for (var name in ev)
                        if (name.substr(0,1) !="_")
                                attrs.push([name,((name == "start_date" || name == "end_date")?format:null)]);
                break;
        }
        return attrs;
}

scheduler.toXML = function(header){
        var xml = [];
        var attrs = this.data_attributes();
        
        
        for (var a in this._events){
                var ev = this._events[a];
                if (ev.id.toString().indexOf("#")!=-1) continue;
                xml.push("<event>");    
                for (var i=0; i < attrs.length; i++)
                        xml.push("<"+attrs[i][0]+"><![CDATA["+(attrs[i][1]?attrs[i][1](ev[attrs[i][0]]):ev[attrs[i][0]])+"]]></"+attrs[i][0]+">");
                        
                xml.push("</event>");
        }
        return (header||"")+"<data>"+xml.join("\n")+"</data>";
};

scheduler.toJSON = function(){
        var json = [];
        var attrs = this.data_attributes();
        for (var a in this._events){
                var ev = this._events[a];
                if (ev.id.toString().indexOf("#")!=-1) continue;
                var ev = this._events[a];
                var line =[];   
                for (var i=0; i < attrs.length; i++)
                        line.push(' '+attrs[i][0]+':"'+((attrs[i][1]?attrs[i][1](ev[attrs[i][0]]):ev[attrs[i][0]])||"").toString().replace(/\n/g,"")+'" ');
                json.push("{"+line.join(",")+"}");
        }
        return "["+json.join(",\n")+"]";
};


scheduler.toICal = function(header){
        var start = "BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:-//dhtmlXScheduler//NONSGML v2.2//EN\nDESCRIPTION:";
        var end = "END:VCALENDAR";
        var format = scheduler.date.date_to_str("%Y%m%dT%H%i%s");
                
        var ical = [];
        for (var a in this._events){
                var ev = this._events[a];
                if (ev.id.toString().indexOf("#")!=-1) continue;
                
                
                ical.push("BEGIN:VEVENT");      
                ical.push("DTSTART:"+format(ev.start_date));    
                ical.push("DTEND:"+format(ev.end_date));        
                ical.push("SUMMARY:"+ev.text);  
                ical.push("END:VEVENT");
        }
        return start+(header||"")+"\n"+ical.join("\n")+"\n"+end;
};