Index: openacs-4/packages/xowiki/www/resources/yui-form-field-validate.js
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/www/resources/yui-form-field-validate.js,v
diff -u -N
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ openacs-4/packages/xowiki/www/resources/yui-form-field-validate.js	24 Nov 2009 14:11:40 -0000	1.1
@@ -0,0 +1,103 @@
+/*
+ * A simple form field validator based on YUI
+ *
+ * Gustaf Neumann                      fecit Nov 2009
+ */
+
+YAHOO.namespace('xo_form_field_validate');
+
+YAHOO.xo_form_field_validate = {
+    current_url: "",
+    currentID: "",
+    ids: new Array(),
+
+    init: function() {
+       // console.log("init");
+       var ids = YAHOO.xo_form_field_validate.ids;
+       for (var i=0; i<ids.length; i++) {
+          var el =  document.getElementById(ids[i]);
+          // when we use onblur, changing the focus manually can lead
+          // to an infinite loop; so we use for the time being onChange instead of onBlur.
+          YAHOO.util.Event.on(el, "change", YAHOO.xo_form_field_validate.validate);
+          //YAHOO.util.Event.onBlur(el, YAHOO.xo_form_field_validate.validate, this, false);
+       }
+    },
+
+    add: function(id, package_url) {
+       // console.log('adding listener for ' + id);
+       this.ids.push(id);
+       this.package_url = package_url;
+    },
+
+    validate: function(e) {
+       //console.log('validate ');
+       this.callback = {
+
+           failure: function(o) {
+             if (o.status == 406) {
+               // console.log('Validation not successful')
+               //console.info(this);
+               var inputID = this.currentID;
+               var errorEl = YAHOO.util.Dom.get(inputID + "-error");
+               var inputEl = YAHOO.util.Dom.get(inputID);
+               if (errorEl == undefined) {
+                 var n = document.createElement("div");
+                 n.innerHTML = o.responseText;
+                 n.id = inputID + "-error";
+                 YAHOO.util.Dom.insertAfter(n, inputEl);
+                 if (YAHOO.util.Dom.hasClass(inputEl.parentNode,"form-widget")) {
+                   //console.log("parent has class form-widget, replace");
+                   YAHOO.util.Dom.replaceClass(inputEl.parentNode,"form-widget","form-widget-error");
+                 } else {
+                   //console.log("parent has no class form-widget, add");
+                   YAHOO.util.Dom.addClass(inputEl.parentNode,"form-widget-error");
+                 }
+               } else {
+                 errorEl.innerHTML = o.responseText;
+               }
+               inputEl.focus();
+             }
+           },
+
+           success: function(o) {
+             // console.info(o);
+
+             // There seems no way to handle redirects
+             // (301 or 302) in the asyncrequest. Since we know valid
+             // results (just the "OK"), everything else must be a
+             // redirect. We could be brutal and display the returned
+             // page, but not sure, if this would be desireable either.
+             if (o.status == 200 && o.getResponseHeader["Content-Length"] > 10) {
+               // there must have happened a redirect
+               console.info(o);
+               alert("Refresh your login and redo update");
+               //window.location.href = this.package_url 
+               //   + "?refresh-login&return_url=" 
+               //   + escape(this.current_url);
+             } else {
+               var inputID = this.currentID;
+               var errorEl = YAHOO.util.Dom.get(inputID + "-error");
+               var inputEl = YAHOO.util.Dom.get(inputID);
+               if (errorEl != undefined) {
+                 errorEl.parentNode.removeChild(errorEl);  
+               }
+             }
+         },
+
+         scope: YAHOO.xo_form_field_validate
+       }
+
+       var url = window.location.href.replace(/[?].*/,"") + '?m=validate-attribute';
+       var post_query = e.target.name + '=' + escape(e.target.value);
+       YAHOO.xo_form_field_validate.current_url = url + '&' + post_query;
+       YAHOO.xo_form_field_validate.currentID = e.target.id;
+       //console.log(url);
+       //console.log(post_query);
+       YAHOO.util.Connect.asyncRequest('POST', url, this.callback, post_query);
+       return 1;
+  }
+
+};
+
+YAHOO.util.Event.onDOMReady(YAHOO.xo_form_field_validate.init); 
+