fix various cat-related bugs

backend.php

@@ -789,7 +789,7 @@
 		if (!$match_on) {
 			$match_on = "both";
 		}
-		
+
 		$qfh_ret = queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on);
 
 		$result = $qfh_ret[0];

feedlist.js

@@ -75,7 +75,7 @@ function viewfeed(feed, subop, is_cat, subop_param) {
 
 			var show_next_feed = parent.getInitParam("on_catchup_show_next_feed") == "1";
 
-			if (next_unread_feed && show_next_feed) {
+			if (next_unread_feed && show_next_feed && !activeFeedIsCat()) {
 				query = query + "&nuf=" + param_escape(next_unread_feed);
 				setActiveFeedId(next_unread_feed);
 			}

functions.js

@@ -469,6 +469,7 @@ function activeFeedIsCat() {
 function setActiveFeedId(id) {
 //	return setCookie("ttrss_vf_actfeed", id);
 	try {
+		debug("sAFID(" + id + ")");
 		getMainContext().active_feed_id = id;
 	} catch (e) {
 		exception_error("setActiveFeedId", e);

functions.php

@@ -2001,7 +2001,6 @@
 	}
 
 	function queryFeedHeadlines($link, $feed, $limit, $view_mode, $cat_view, $search, $search_mode, $match_on, $override_order = false) {
-
 			if ($search) {
 			
 				$search_query_part = getSearchSql($search, $match_on);
@@ -2078,7 +2077,7 @@
 			} else if ($feed >= 0) {
 	
 				if ($cat_view) {
-	
+
 					if ($feed > 0) {
 						$query_strategy_part = "cat_id = '$feed'";
 					} else {
@@ -2086,7 +2085,7 @@
 					}
 	
 					$vfeed_query_part = "ttrss_feeds.title AS feed_title,";
-	
+
 				} else {		
 					$tmp_result = db_query($link, "SELECT id 
 						FROM ttrss_feeds WHERE parent_feed = '$feed'
@@ -2144,7 +2143,7 @@
 			} else if (preg_match('/^-?[0-9][0-9]*$/', $feed) != false && $feed >= 0) {
 	
 				if ($cat_view) {
-	
+
 					if ($feed != 0) {			
 						$result = db_query($link, "SELECT title FROM ttrss_feed_categories
 							WHERE id = '$feed' AND owner_uid = " . $_SESSION["uid"]);

tt-rss.js

@@ -207,7 +207,7 @@ function updateFeedList(silent, fetch) {
 		query_str = query_str + "&tags=1";
 	}
 
-	if (getActiveFeedId() != undefined) {
+	if (getActiveFeedId() && !activeFeedIsCat()) {
 		query_str = query_str + "&actid=" + getActiveFeedId();
 	}
 
@@ -447,7 +447,7 @@ function quickMenuGo(opid) {
 		if (opid == "qmcRemoveFeed") {
 			var actid = getActiveFeedId();
 	
-			if (actid == undefined) {
+			if (!actid || activeFeedIsCat()) {
 				alert("Please select some feed first.");
 				return;
 			}