From 081e527d3a9473fb1468f86b25c854e912fd775b Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@bah.spb.su>
Date: Sat, 17 May 2008 05:42:20 +0100
Subject: [PATCH] vfeed grouping: prevent duplicate group headings

---
 backend.php   |  8 ++++++--
 feedlist.js   |  9 +++++++--
 functions.php | 27 +++++++++++++++------------
 viewfeed.js   |  6 ++++++
 4 files changed, 34 insertions(+), 16 deletions(-)

diff --git a/backend.php b/backend.php
index c0362b45f..bdecb6cd0 100644
--- a/backend.php
+++ b/backend.php
@@ -228,6 +228,7 @@
 			$cat_view = db_escape_string($_GET["cat"]);
 			$next_unread_feed = db_escape_string($_GET["nuf"]);
 			$offset = db_escape_string($_GET["skip"]);
+			$vgroup_last_feed = db_escape_string($_GET["vgrlf"]);
 
 			set_pref($link, "_DEFAULT_VIEW_MODE", $view_mode);
 			set_pref($link, "_DEFAULT_VIEW_LIMIT", $limit);
@@ -246,17 +247,20 @@
 			} else {
 
 				$ret = outputHeadlinesList($link, $feed, $subop, 
-					$view_mode, $limit, $cat_view, $next_unread_feed, $offset);
+					$view_mode, $limit, $cat_view, $next_unread_feed, $offset, 
+					$vgroup_last_feed);
 	
 				$topmost_article_ids = $ret[0];
 				$headlines_count = $ret[1];
 				$returned_feed = $ret[2];
 				$disable_cache = $ret[3];
+				$vgroup_last_feed = $ret[4];
 	
 				print "]]></headlines>";
 	
 				print "<headlines-count value=\"$headlines_count\"/>";
-	
+				print "<vgroup-last-feed value=\"$vgroup_last_feed\"/>";
+
 				$headlines_unread = getFeedUnread($link, $returned_feed);
 	
 				print "<headlines-unread value=\"$headlines_unread\"/>";
diff --git a/feedlist.js b/feedlist.js
index 782cb3a19..7ca490053 100644
--- a/feedlist.js
+++ b/feedlist.js
@@ -142,8 +142,6 @@ function viewfeed(feed, subop, is_cat, subop_param, skip_history, offset) {
 		disableContainerChildren("headlinesToolbar", false);
 		Form.enable("main_toolbar_form");
 
-		debug(query);
-
 		// for piggybacked counters
 
 		if (tagsAreDisplayed()) {
@@ -152,6 +150,13 @@ function viewfeed(feed, subop, is_cat, subop_param, skip_history, offset) {
 			query = query + "&omode=flc";
 		}
 
+		// to prevent duplicate feed titles when showing grouped vfeeds
+		if (vgroup_last_feed) {
+			query = query + "&vgrlf=" + param_escape(vgroup_last_feed);
+		}
+
+		debug(query);
+
 		var container = document.getElementById("headlinesInnerContainer");
 
 		if (container && page_offset == 0 && !isCdmMode()) {
diff --git a/functions.php b/functions.php
index e9134328c..693b3ddc1 100644
--- a/functions.php
+++ b/functions.php
@@ -4680,7 +4680,7 @@
 	}
 
 	function outputHeadlinesList($link, $feed, $subop, $view_mode, $limit, $cat_view,
-					$next_unread_feed, $offset) {
+					$next_unread_feed, $offset, $vgr_last_feed = false) {
 
 		$disable_cache = false;
 
@@ -4784,6 +4784,8 @@
 		$feed_site_url = $qfh_ret[2];
 		$last_error = $qfh_ret[3];
 
+		$vgroup_last_feed = $vgr_last_feed;
+
 		if ($feed == -2) {
 			$feed_site_url = article_publish_url($link);
 		}
@@ -4927,17 +4929,13 @@
 				if (!get_pref($link, 'COMBINED_DISPLAY_MODE')) {
 
 					if (defined('_VFEED_GROUP_BY_FEED')) {
-						if ($line["feed_title"] != $cur_feed_title) {
+						if ($feed_id != $vgroup_last_feed) {
 
 							$cur_feed_title = $line["feed_title"];
+							$vgroup_last_feed = $feed_id;
 
-/*							print "<tr class='feedTitle'><td colspan='7'>".
-								$line["feed_title"].
-								" (<a href=\"javascript:viewfeed($feed_id, '', false)\">".
-								"more</a>)</td></tr>"; */
 
-							$vf_catchup_link = "(<a href='javascript:'>select</a>, 
-								<a href='javascript:catchupFeedInGroup($feed_id, \"$cur_feed_title\")'>mark as read</a>)";
+							$vf_catchup_link = "(<a href='javascript:catchupFeedInGroup($feed_id, \"$cur_feed_title\")'>mark as read</a>)";
 
 							print "<tr class='feedTitle'><td colspan='7'>".
 								"<a href=\"javascript:viewfeed($feed_id, '', false)\">".
@@ -5003,11 +5001,16 @@
 				} else {
 
 					if (defined('_VFEED_GROUP_BY_FEED')) {
-						if ($line["feed_title"] != $cur_feed_title) {
+						if ($feed_id != $vgroup_last_feed) {
+
+							$cur_feed_title = $line["feed_title"];
+							$vgroup_last_feed = $feed_id;
+
+							$vf_catchup_link = "(<a href='javascript:catchupFeedInGroup($feed_id, \"$cur_feed_title\")'>mark as read</a>)";
+
 							print "<div class='cdmFeedTitle'>".
 								"<a href=\"javascript:viewfeed($feed_id, '', false)\">".
-								$line["feed_title"]."</a></div>";
-							$cur_feed_title = $line["feed_title"];
+								$line["feed_title"]."</a> $vf_catchup_link</div>";
 						}
 					}
 
@@ -5199,7 +5202,7 @@
 			print "</div>";
 		}
 
-		return array($topmost_article_ids, $headlines_count, $feed, $disable_cache);
+		return array($topmost_article_ids, $headlines_count, $feed, $disable_cache, $vgroup_last_feed);
 	}
 
 // from here: http://www.roscripts.com/Create_tag_cloud-71.html
diff --git a/viewfeed.js b/viewfeed.js
index fb7275127..caaec2daa 100644
--- a/viewfeed.js
+++ b/viewfeed.js
@@ -17,6 +17,8 @@ var _cdm_wd_vishist = new Array();
 
 var article_cache = new Array();
 
+var vgroup_last_feed = false;
+
 function catchup_callback() {
 	if (xmlhttp_rpc.readyState == 4) {
 		try {
@@ -93,10 +95,14 @@ function headlines_callback2(transport, active_feed_id, is_cat, feed_cur_page) {
 			var headlines_unread_obj = transport.responseXML.getElementsByTagName("headlines-unread")[0];
 			var disable_cache_obj = transport.responseXML.getElementsByTagName("disable-cache")[0];
 
+			var vgroup_last_feed_obj =  transport.responseXML.getElementsByTagName("vgroup-last-feed")[0];
+
 			var headlines_count = headlines_count_obj.getAttribute("value");
 			var headlines_unread = headlines_unread_obj.getAttribute("value");
 			var disable_cache = disable_cache_obj.getAttribute("value") != "0";
 
+			vgroup_last_feed = vgroup_last_feed_obj.getAttribute("value");
+
 			if (headlines_count == 0) {
 				_infscroll_disable = 1;
 			} else {