var WPAjax = Class.create();
Object.extend(WPAjax.prototype, Ajax.Request.prototype);
Object.extend(WPAjax.prototype, {
WPComplete: false, // onComplete function
WPError: false, // onWPError function
initialize: function(url, responseEl) {
var tempObj = this;
this.transport = Ajax.getTransport();
if ( !this.transport )
return false;
this.setOptions( {
parameters: 'cookie=' + encodeURIComponent(document.cookie),
onComplete: function(transport) { // transport = XMLHttpRequest object
if ( tempObj.parseAjaxResponse() ) {
if ( 'function' == typeof tempObj.WPComplete )
tempObj.WPComplete(transport);
} else if ( 'function' == typeof tempObj.WPError ) // if response corresponds to an error (bad data, say, not 404)
tempObj.WPError(transport);
}
});
this.url = url ? url : '/wp-admin/admin-ajax.php';
this.getResponseElement(responseEl);
},
addArg: function(key, value) {
var a = [];
a[encodeURIComponent(key)] = encodeURIComponent(value);
this.options.parameters = $H(this.options.parameters).merge($H(a));
},
getResponseElement: function(r) {
var p = $(r + '-p');
if ( !p ) {
new Insertion.Bottom(r, "");
var p = $(r + '-p');
}
this.myResponseElement = p;
},
parseAjaxResponse: function() { // 1 = good, 0 = strange (bad data?), -1 = you lack permission
if ( this.transport.responseXML && typeof this.transport.responseXML == 'object' && ( this.transport.responseXML.xml || 'undefined' == typeof this.transport.responseXML.xml ) ) {
var err = this.transport.responseXML.getElementsByTagName('wp_error');
if ( err[0] ) {
var msg = $A(err).inject( '', function(a, b) { return a + '' + b.firstChild.nodeValue + '
'; } );
Element.update(this.myResponseElement,'' + msg + '
');
return false;
}
return true;
}
var r = this.transport.responseText;
if ( isNaN(r) ) {
Element.update(this.myResponseElement,'');
return false;
}
var r = parseInt(r,10);
if ( -1 == r ) {
Element.update(this.myResponseElement,"");
return false;
} else if ( 0 == r ) {
Element.update(this.myResponseElement,"");
return false;
}
return true;
},
addOnComplete: function(f) {
if ( 'function' == typeof f ) { var of = this.WPComplete; this.WPComplete = function(t) { if ( of ) of(t); f(t); } }
},
addOnWPError: function(f) {
if ( 'function' == typeof f ) { var of = this.WPError; this.WPError = function(t) { if ( of ) of(t); f(t); } }
},
notInitialized: function() {
return this.transport ? false : true;
}
});
Ajax.activeSendCount = 0;
Ajax.Responders.register( {
onCreate: function() {
Ajax.activeSendCount++;
if ( 1 != Ajax.activeSendCount )
return;
wpBeforeUnload = window.onbeforeunload;
window.onbeforeunload = function() {
return "";
}
},
onLoading: function() { // Can switch to onLoaded if we lose data
Ajax.activeSendCount--;
if ( 0 != Ajax.activeSendCount )
return;
window.onbeforeunload = wpBeforeUnload;
}
});
//Pretty func adapted from ALA http://www.alistapart.com/articles/gettingstartedwithajax
function getNodeValue(tree,el){try { var r = tree.getElementsByTagName(el)[0].firstChild.nodeValue; } catch(err) { var r = null; } return r; }