Implement the last part of #276: show the list of available feeds in the frontend and let the user select one of them (refs #276)

functions.js

@@ -1322,9 +1322,31 @@ function subscribeToFeed() {
 				break;
 			case 2:
 			case 3:
-			case 4:
 				alert(__("Can't subscribe to the specified URL."));
 				break;
+			case 4:
+				new Ajax.Request("backend.php", {
+					parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
+					onComplete: function(transport) {
+						var result = transport.responseXML.getElementsByTagName('urls')[0];
+						var feeds = JSON.parse(result.firstChild.nodeValue);
+						var select = document.getElementById("faad_feeds_container_select");
+
+						while (select.hasChildNodes()) {
+							select.removeChild(elem.firstChild);
+						}
+						var count = 0;
+						for (var feedUrl in feeds) {
+							select.insert(new Option(feeds[feedUrl], feedUrl, false));
+							count++;
+						}
+						if (count > 5) count = 5;
+						select.size = count;
+
+						Effect.Appear('fadd_feeds_container', {duration : 0.5});
+					}
+				});
+				break;
 			case 0:
 				alert(__("You are already subscribed to this feed."));
 				break;

modules/popup-dialog.php

@@ -263,6 +263,14 @@
 
 			print "</div>";
 
+			print '<div id="fadd_feeds_container" style="display:none">
+
+					<div class="dlgSec">' . __('Available feeds') . '</div>
+					<div class="dlgSecCont">'
+
+					. ' <select name="feed" id="faad_feeds_container_select" size="3"></select>'
+				. '</div></div>';
+
 			print "<div id='fadd_login_container' style='display:none'>
 	
 					<div class=\"dlgSec\">".__("Authentication")."</div>