collapsable categories

backend.php

@@ -372,7 +372,10 @@
 						AND ttrss_user_entries.ref_id = ttrss_entries.id
 						AND owner_uid = '$owner_uid') as unread,
 				(SELECT title FROM ttrss_feed_categories 
-					WHERE id = cat_id) AS category
+					WHERE id = cat_id) AS category,
+				cat_id,
+				(SELECT collapsed FROM ttrss_feed_categories
+					WHERE id = cat_id) AS collapsed
 				FROM ttrss_feeds WHERE owner_uid = '$owner_uid' ORDER BY $order_by_qpart");			
 	
 			$actid = $_GET["actid"];
@@ -395,6 +398,8 @@
 				$total = $line["total"];
 				$unread = $line["unread"];
 
+				$cat_id = $line["cat_id"];
+
 				$tmp_category = $line["category"];
 
 				if (!$tmp_category) {
@@ -420,9 +425,19 @@
 					}
 				
 					$category = $tmp_category;
+
+					$collapsed = $line["collapsed"];
+
+					if ($collapsed == "t" || $collapsed == "1") {
+						$holder_class = "invisible";
+						$tmp_category .= "...";
+					} else {
+						$holder_class = "";
+					}						
 					
-					print "<li class=\"feedCat\">$category</li>";
+					print "<li class=\"feedCat\" id=\"FCAT-$cat_id\">
-					print "<li id=\"feedCatHolder\"><ul class=\"feedCatList\">";
+						<a href=\"javascript:toggleCollapseCat($cat_id)\">$tmp_category</a></li>";
+					print "<li id=\"feedCatHolder\" class=\"$holder_class\"><ul class=\"feedCatList\">";
 				}
 	
 				printFeedEntry($feed_id, $class, $feed, $unread, 
@@ -648,6 +663,14 @@
 				last_read = NOW(),unread = false WHERE owner_uid = " . $_SESSION["uid"]);
 		}
 
+		if ($subop == "collapse") {
+			$cat_id = db_escape_string($_GET["cid"]);
+			db_query($link, "UPDATE ttrss_feed_categories SET
+				collapsed = NOT collapsed WHERE id = '$cat_id' AND owner_uid = " . 
+				$_SESSION["uid"]);
+			return;
+		}
+
 		outputFeedList($link, $tags);
 
 	}

feedlist.js

@@ -1,3 +1,23 @@
+var xmlhttp = false;
+
+/*@cc_on @*/
+/*@if (@_jscript_version >= 5)
+// JScript gives us Conditional compilation, we can cope with old IE versions.
+// and security blocked creation of the objects.
+try {
+	xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
+} catch (e) {
+	try {
+		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
+	} catch (E) {
+		xmlhttp = false;
+	}
+}
+@end @*/
+
+if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
+	xmlhttp = new XMLHttpRequest();
+}
 
 function viewfeed(feed, skip, subop, doc) {
 	try {
@@ -136,6 +156,35 @@ function localHotkeyHandler(keycode) {
 
 }
 
+function toggleCollapseCat(cat) {
+	try {
+		if (!xmlhttp_ready(xmlhttp)) {
+			printLockingError();
+			return;
+		}
+	
+		var cat_elem = document.getElementById("FCAT-" + cat);
+		var cat_list = cat_elem.nextSibling;
+		var caption = cat_elem.lastChild;
+		
+		if (cat_list.className.match("invisible")) {
+			cat_list.className = "";
+			caption.innerHTML = caption.innerHTML.replace("...", "");
+		} else {
+			cat_list.className = "invisible";
+			caption.innerHTML = caption.innerHTML + "...";
+		}
+
+		xmlhttp_rpc.open("GET", "backend.php?op=feeds&subop=collapse&cid=" + 
+			param_escape(cat), true);
+		xmlhttp_rpc.onreadystatechange=rpc_pnotify_callback;
+		xmlhttp_rpc.send(null);
+
+	} catch (e) {
+		exception_error(e);
+	}
+}
+
 function init() {
 	hideOrShowFeeds(document, getCookie("ttrss_vf_hreadf") == 1);
 	document.onkeydown = hotkey_handler;

tt-rss.css

@@ -153,6 +153,14 @@ ul.feedList li.feedCat {
 	font-size : small;
 }
 
+ul.feedList li.feedCat a {
+	color : #707070;
+}
+
+ul.feedList li.feedCat a:hover {
+	color : #5050aa;
+}
+
 ul.feedCatList {
 	list-style-type : none;
 	margin : 0px;

tt-rss.js

@@ -602,4 +602,3 @@ function toggleDispRead() {
 
 }
 
-