properly handle on-the-fly adding of categories

functions.js

@@ -2166,7 +2166,7 @@ function catSelectOnChange(elem) {
 	}
 }
 
-function quickAddCat(select) {
+function quickAddCat(elem) {
 	try {
 		var cat = prompt(__("Please enter category title:"));
 
@@ -2174,15 +2174,18 @@ function quickAddCat(select) {
 
 			var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
 
+			notify_progress("Loading, please wait...", true);
+
 			new Ajax.Request("backend.php", {
 				parameters: query,
 				onComplete: function (transport) {
 					var response = transport.responseXML;
+					var select = response.getElementsByTagName("select")[0];
+					var options = select.getElementsByTagName("option");
 
-					var payload = response.getElementsByTagName("payload")[0];
+					dropbox_replace_options(elem, options);
 
-					if (payload)
-						select.innerHTML = payload.firstChild.nodeValue;
+					notify('');
 
 			} });
 
@@ -2283,7 +2286,14 @@ function dropbox_replace_options(elem, options) {
 			var text = options[i].firstChild.nodeValue;
 			var value = options[i].getAttribute("value");
 			var issel = options[i].getAttribute("selected") == "1";
-			elem.insert(new Option(text, value, issel));
+
+			var option = new Option(text, value, issel);
+
+			if (options[i].getAttribute("disabled"))
+				option.setAttribute("disabled", true);
+
+			elem.insert(option);
+
 			if (issel) sel_idx = i;
 		}
 

functions.php

@@ -3047,17 +3047,19 @@
 			WHERE owner_uid = ".$_SESSION["uid"]." ORDER BY title");
 
 		if (db_num_rows($result) > 0 && $include_all_cats) {
-			print "<option disabled>--------</option>";
+			print "<option disabled=\"1\">--------</option>";
 		}
 
 		while ($line = db_fetch_assoc($result)) {
 			if ($line["id"] == $default_id) {
 				$is_selected = "selected=\"1\"";
 			} else {
-				$is_selected = "";
+				$is_selected = "";			
 			}
-			printf("<option $is_selected value='%d'>%s</option>", 
-				$line["id"], htmlspecialchars($line["title"]));
+
+			if ($line["title"])
+				printf("<option $is_selected value='%d'>%s</option>", 
+					$line["id"], htmlspecialchars($line["title"]));
 		}
 
 		print "<option value=\"ADD_CAT\">" .__("Add category...") . "</option>";
@@ -6609,6 +6611,9 @@
 	}
 
 	function add_feed_category($link, $feed_cat) {
+
+		if (!$feed_cat) return false;
+
 		db_query($link, "BEGIN");
 
 		$result = db_query($link,

modules/backend-rpc.php

@@ -1108,9 +1108,7 @@
 				$id = 0;
 			}
 
-			print "<payload><![CDATA[";
 			print_feed_cat_select($link, "cat_id", $id);
-			print "]]></payload>";
 
 			print "</rpc-reply>";