+var PseudoChecker = {
+ req: null,
+ exists: {},
+ currentvalue: null,
+ messageelt: null,
+ throbber: null,
+
+ message: function(str, status, throbber) {
+ var row;
+ if (!this.messageelt) {
+ row = new Element('tr');
+ // we can't use row.update('<td></td><td><div></div></td>')
+ // because gecko would mangle the <td>s
+ row.insert(new Element('td'))
+ .insert((new Element('td')).update(new Element('div')));
+
+ $("user_pseudo").up('tr').insert({after: row});
+ this.messageelt = new Element('span');
+ this.throbber = new Element("img", { src: "icons/pseudo-throbber.gif"});
+ row.down('div').insert(this.throbber).insert(this.messageelt);
+ }
+ if (throbber) {
+ this.throbber.show();
+ } else {
+ this.throbber.hide();
+ }
+ this.messageelt.up().setStyle({visibility: ''});
+ this.messageelt.className = status;
+ this.messageelt.update(str);
+ },
+
+ availableMessage: function(available) {
+ var message = available ? SyjStrings.availablePseudo: SyjStrings.unavailablePseudo,
+ status = available ? "success": "warn";
+ this.message(message, status, false);
+ },
+
+ reset: function() {
+ if (this.req) {
+ this.req.abort();
+ this.req = this.currentvalue = null;
+ }
+ if (this.messageelt) {
+ this.messageelt.up().setStyle({visibility: 'hidden'});
+ }
+ },
+
+ check: function() {
+ var pseudo = $("user_pseudo").value;
+
+ this.reset();
+
+ if (!pseudo || !(pseudo.match(/^[a-zA-Z0-9_.]+$/))) {
+ return;
+ }
+
+ if (typeof this.exists[pseudo] === "boolean") {
+ this.reset();
+ this.availableMessage(!this.exists[pseudo]);
+ return;
+ }
+
+ this.message(SyjStrings.pseudoChecking, "", true);
+
+ this.currentvalue = pseudo;
+ this.req = new Ajax.TimedRequest('userexists/' + encodeURIComponent(pseudo), 20, {
+ onFailure: this.failure.bind(this),
+ onSuccess: this.success.bind(this)
+ });
+ },
+
+ failure: function(transport) {
+ var httpCode = 0, value = this.currentvalue;
+
+ if (transport) {
+ httpCode = transport.getStatus();
+ }
+ this.reset();
+ if (httpCode === 404) {
+ this.exists[value] = false;
+ this.availableMessage(true);
+ }
+
+ },
+
+ success: function(transport) {
+ var httpCode = transport.getStatus(), value = this.currentvalue;
+ this.reset();
+ this.exists[value] = true;
+ this.availableMessage(false);
+ }
+};
+
+