var Ajax = {
getTransport: function() {
return Try.these(
function() {return new XMLHttpRequest()},
function() {return new ActiveXObject('Msxml2.XMLHTTP')},
function() {return new ActiveXObject('Microsoft.XMLHTTP')}
) || false;
},
activeRequestCount: 0
}
Ajax.Responders = {
responders: [],
_each: function(iterator) {
this.responders._each(iterator);
},
register: function(responderToAdd) {
if (!this.include(responderToAdd))
this.responders.push(responderToAdd);
},
unregister: function(responderToRemove) {
this.responders = this.responders.without(responderToRemove);
},
dispatch: function(callback, request, transport, json) {
this.each(function(responder) {
if (responder[callback] && typeof responder[callback] == 'function') {
try {
responder[callback].apply(responder, [request, transport, json]);
} catch (e) {}
}
});
}
};
Object.extend(Ajax.Responders, Enumerable);
Ajax.Responders.register({
onCreate: function() {
Ajax.activeRequestCount++;
},
onComplete: function() {
Ajax.activeRequestCount--;
}
});
Ajax.Base = function() {};
Ajax.Base.prototype = {
setOptions: function(options) {
this.options = {
method: 'post',
asynchronous: true,
contentType:'application/x-www-form-urlencoded',
parameters: ''
}
Object.extend(this.options, options || {});
},
responseIsSuccess: function() {
return this.transport.status == undefined
|| this.transport.status == 0 
|| (this.transport.status >= 200 && this.transport.status < 300);
},
responseIsFailure: function() {
return !this.responseIsSuccess();
}
}
Ajax.Request = Class.create();
Ajax.Request.Events = 
['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
initialize: function(url, options) {
this.transport = Ajax.getTransport();
this.setOptions(options);
this.request(url);
},
request: function(url) {
var parameters = this.options.parameters || '';
if (parameters.length > 0) parameters += '&_=';
try {
this.url = url;
if (this.options.method == 'get' && parameters.length > 0)
this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;
Ajax.Responders.dispatch('onCreate', this, this.transport);
this.transport.open(this.options.method, this.url, 
this.options.asynchronous);
if (this.options.asynchronous) {
this.transport.onreadystatechange = this.onStateChange.bind(this);
setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
}
this.setRequestHeaders();
var body = this.options.postBody ? this.options.postBody : parameters;
this.transport.send(this.options.method == 'post' ? body : null);
} catch (e) {
this.dispatchException(e);
}
},
setRequestHeaders: function() {
var requestHeaders = 
['X-Requested-With', 'XMLHttpRequest',
 'X-Prototype-Version', Prototype.Version,
 'Accept', 'text/javascript, text/html, application/xml, text/xml'];
if (this.options.method == 'post') {
requestHeaders.push('Content-type', this.options.contentType);
if (this.transport.overrideMimeType)
requestHeaders.push('Connection', 'close');
}
if (this.options.requestHeaders)
requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
for (var i = 0; i < requestHeaders.length; i += 2)
this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
},
onStateChange: function() {
var readyState = this.transport.readyState;
if (readyState != 1)
this.respondToReadyState(this.transport.readyState);
},
header: function(name) {
try {
return this.transport.getResponseHeader(name);
} catch (e) {}
},
evalJSON: function() {
try {
return eval('(' + this.header('X-JSON') + ')');
} catch (e) {}
},
evalResponse: function() {
try {
return eval(this.transport.responseText);
} catch (e) {
this.dispatchException(e);
}
},
respondToReadyState: function(readyState) {
var event = Ajax.Request.Events[readyState];
var transport = this.transport, json = this.evalJSON();
if (event == 'Complete') {
try {
(this.options['on' + this.transport.status]
 || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
 || Prototype.emptyFunction)(transport, json);
} catch (e) {
this.dispatchException(e);
}
if ((this.header('Content-type') || '').match(/^text\/javascript/i))
this.evalResponse();
}
try {
(this.options['on' + event] || Prototype.emptyFunction)(transport, json);
Ajax.Responders.dispatch('on' + event, this, transport, json);
} catch (e) {
this.dispatchException(e);
}
if (event == 'Complete')
this.transport.onreadystatechange = Prototype.emptyFunction;
},
dispatchException: function(exception) {
(this.options.onException || Prototype.emptyFunction)(this, exception);
Ajax.Responders.dispatch('onException', this, exception);
}
});
Ajax.Updater = Class.create();
Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
initialize: function(container, url, options) {
this.containers = {
success: container.success ? $(container.success) : $(container),
failure: container.failure ? $(container.failure) :
(container.success ? null : $(container))
}
this.transport = Ajax.getTransport();
this.setOptions(options);
var onComplete = this.options.onComplete || Prototype.emptyFunction;
this.options.onComplete = (function(transport, object) {
this.updateContent();
onComplete(transport, object);
}).bind(this);
this.request(url);
},
updateContent: function() {
var receiver = this.responseIsSuccess() ?
this.containers.success : this.containers.failure;
var response = this.transport.responseText;
if (!this.options.evalScripts)
response = response.stripScripts();
if (receiver) {
if (this.options.insertion) {
new this.options.insertion(receiver, response);
} else {
Element.update(receiver, response);
}
}
if (this.responseIsSuccess()) {
if (this.onComplete)
setTimeout(this.onComplete.bind(this), 10);
}
}
});
Ajax.PeriodicalUpdater = Class.create();
Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
initialize: function(container, url, options) {
this.setOptions(options);
this.onComplete = this.options.onComplete;
this.frequency = (this.options.frequency || 2);
this.decay = (this.options.decay || 1);
this.updater = {};
this.container = container;
this.url = url;
this.start();
},
start: function() {
this.options.onComplete = this.updateComplete.bind(this);
this.onTimerEvent();
},
stop: function() {
this.updater.onComplete = undefined;
clearTimeout(this.timer);
(this.onComplete || Prototype.emptyFunction).apply(this, arguments);
},
updateComplete: function(request) {
if (this.options.decay) {
this.decay = (request.responseText == this.lastText ? 
this.decay * this.options.decay : 1);
this.lastText = request.responseText;
}
this.timer = setTimeout(this.onTimerEvent.bind(this), 
this.decay * this.frequency * 1000);
},
onTimerEvent: function() {
this.updater = new Ajax.Updater(this.container, this.url, this.options);
}
});
Prado.Callback = Class.create();
Object.extend(Prado.Callback,
{
FIELD_CALLBACK_TARGET : 'PRADO_CALLBACK_TARGET',
FIELD_CALLBACK_PARAMETER : 'PRADO_CALLBACK_PARAMETER',
PostDataLoaders : ['PRADO_PAGESTATE'],
Exception :
{
"on505" : function(request, transport, data)
{
var msg = 'HTTP '+transport.status+" with response";
Logger.error(msg, transport.responseText);
this.logException(data);
},
onComplete : function(request, transport, data)
{
if(transport.status != 505)
{
var msg = 'HTTP '+transport.status+" with response : \n";
msg += transport.responseText + "\n";
msg += "Data : \n"+inspect(data);
Logger.warn(msg);
}
},
formatException : function(e)
{
var msg = e.type + " with message \""+e.message+"\"";
msg += " in "+e.file+"("+e.line+")\n";
msg += "Stack trace:\n";
var trace = e.trace;
for(var i = 0; i<trace.length; i++)
{
msg += "#"+i+" "+trace[i].file;
msg += "("+trace[i].line+"): ";
msg += trace[i]["class"]+"->"+trace[i]["function"]+"()"+"\n";
}
return msg;
},
logException : function(e)
{
Logger.error("Callback Request Error "+e.code, this.formatException(e));
}
},
encode : function(data)
{
Prado.JSON.stringify(data);
},
decode : function(data)
{
return Prado.JSON.parse(data);
}
})
Event.OnLoad(function()
{ 
if(typeof Logger != "undefined") 
Ajax.Responders.register(Prado.Callback.Exception);
});
Prado.Callback.prototype = 
{
url : window.location.href,
options : {},
id : null,
parameters : null,
initialize : function(id, parameters, onSuccess, options)
{
this.options = options || {};
this.id = id;
this.parameters = parameters;
var request = 
{
postBody : this._getPostData(),
onSuccess : this._onSuccess.bind(this)
}
Object.extend(this.options || {},request);
new Ajax.Request(this.url, this.options);
},
_getPostData : function()
{
var data = {};
Prado.Callback.PostDataLoaders.each(function(name)
{
$A(document.getElementsByName(name)).each(function(element)
{
var value = $F(element);
if(typeof(value) != "undefined")
data[name] = value;
})
})
if(typeof(this.parameters) != "undefined")
data[Prado.Callback.FIELD_CALLBACK_PARAMETER] = Prado.Callback.encode(this.parameters);
data[Prado.Callback.FIELD_CALLBACK_TARGET] = this.id;
return $H(data).toQueryString();
},
_onSuccess : function(response, transport, json)
{
}
}
Array.prototype.______array = '______array';
Prado.JSON = {
org: 'http: 
copyright: '(c)2005 JSON.org',
license: 'http: 
stringify: function (arg) {
var c, i, l, s = '', v;
switch (typeof arg) {
case 'object':
if (arg) {
if (arg.______array == '______array') {
for (i = 0; i < arg.length; ++i) {
v = this.stringify(arg[i]);
if (s) {
s += ',';
}
s += v;
}
return '[' + s + ']';
} else if (typeof arg.toString != 'undefined') {
for (i in arg) {
v = arg[i];
if (typeof v != 'undefined' && typeof v != 'function') {
v = this.stringify(v);
if (s) {
s += ',';
}
s += this.stringify(i) + ':' + v;
}
}
return '{' + s + '}';
}
}
return 'null';
case 'number':
return isFinite(arg) ? String(arg) : 'null';
case 'string':
l = arg.length;
s = '"';
for (i = 0; i < l; i += 1) {
c = arg.charAt(i);
if (c >= ' ') {
if (c == '\\' || c == '"') {
s += '\\';
}
s += c;
} else {
switch (c) {
case '\b':
s += '\\b';
break;
case '\f':
s += '\\f';
break;
case '\n':
s += '\\n';
break;
case '\r':
s += '\\r';
break;
case '\t':
s += '\\t';
break;
default:
c = c.charCodeAt();
s += '\\u00' + Math.floor(c / 16).toString(16) +
(c % 16).toString(16);
}
}
}
return s + '"';
case 'boolean':
return String(arg);
default:
return 'null';
}
},
parse: function (text) {
var at = 0;
var ch = ' ';
function error(m) {
throw {
name: 'JSONError',
message: m,
at: at - 1,
text: text
};
}
function next() {
ch = text.charAt(at);
at += 1;
return ch;
}
function white() {
while (ch) {
if (ch <= ' ') {
next();
} else if (ch == '/') {
switch (next()) {
case '/':
while (next() && ch != '\n' && ch != '\r') {}
break;
case '*':
next();
for (;;) {
if (ch) {
if (ch == '*') {
if (next() == '/') {
next();
break;
}
} else {
next();
}
} else {
error("Unterminated comment");
}
}
break;
default:
error("Syntax error");
}
} else {
break;
}
}
}
function string() {
var i, s = '', t, u;
if (ch == '"') {
outer:while (next()) {
if (ch == '"') {
next();
return s;
} else if (ch == '\\') {
switch (next()) {
case 'b':
s += '\b';
break;
case 'f':
s += '\f';
break;
case 'n':
s += '\n';
break;
case 'r':
s += '\r';
break;
case 't':
s += '\t';
break;
case 'u':
u = 0;
for (i = 0; i < 4; i += 1) {
t = parseInt(next(), 16);
if (!isFinite(t)) {
break outer;
}
u = u * 16 + t;
}
s += String.fromCharCode(u);
break;
default:
s += ch;
}
} else {
s += ch;
}
}
}
error("Bad string");
}
function array() {
var a = [];
if (ch == '[') {
next();
white();
if (ch == ']') {
next();
return a;
}
while (ch) {
a.push(value());
white();
if (ch == ']') {
next();
return a;
} else if (ch != ',') {
break;
}
next();
white();
}
}
error("Bad array");
}
function object() {
var k, o = {};
if (ch == '{') {
next();
white();
if (ch == '}') {
next();
return o;
}
while (ch) {
k = string();
white();
if (ch != ':') {
break;
}
next();
o[k] = value();
white();
if (ch == '}') {
next();
return o;
} else if (ch != ',') {
break;
}
next();
white();
}
}
error("Bad object");
}
function number() {
var n = '', v;
if (ch == '-') {
n = '-';
next();
}
while (ch >= '0' && ch <= '9') {
n += ch;
next();
}
if (ch == '.') {
n += '.';
while (next() && ch >= '0' && ch <= '9') {
n += ch;
}
}
if (ch == 'e' || ch == 'E') {
n += 'e';
next();
if (ch == '-' || ch == '+') {
n += ch;
next();
}
while (ch >= '0' && ch <= '9') {
n += ch;
next();
}
}
v = +n;
if (!isFinite(v)) {
} else {
return v;
}
}
function word() {
switch (ch) {
case 't':
if (next() == 'r' && next() == 'u' && next() == 'e') {
next();
return true;
}
break;
case 'f':
if (next() == 'a' && next() == 'l' && next() == 's' &&
next() == 'e') {
next();
return false;
}
break;
case 'n':
if (next() == 'u' && next() == 'l' && next() == 'l') {
next();
return null;
}
break;
}
error("Syntax error");
}
function value() {
white();
switch (ch) {
case '{':
return object();
case '[':
return array();
case '"':
return string();
case '-':
return number();
default:
return ch >= '0' && ch <= '9' ? number() : word();
}
}
return value();
}
};