add placeholder mouse trap code, misc fixes

feedlist.js

@@ -1,6 +1,7 @@
 var _feed_cur_page = 0;
 var _infscroll_disable = 0;
 var _infscroll_request_sent = 0;
+var feed_under_pointer = undefined;
 
 function viewCategory(cat) {
 	active_feed_is_cat = true;
@@ -327,6 +328,7 @@ function feedlist_init() {
 		
 		hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 		document.onkeydown = hotkey_handler;
+		document.onmousedown = mouse_handler;
 		setTimeout("timeout()", 0);
 
 /*		debug("about to remove splash, OMG!");
@@ -460,7 +462,29 @@ function init_collapsable_feedlist(theme) {
 }
 
 function remove_splash() {
+	if (Element.visible("overlay")) {
 		debug("about to remove splash, OMG!");
 		Element.hide("overlay");
 		debug("removed splash!");
 	}
+}
+
+function feedMouseIn(id) {
+	try {
+		if (feed_under_pointer != id) {
+			feed_under_pointer = id;
+		}
+
+	} catch (e) {
+		exception_error("feedMouseIn", e);
+	}
+}
+
+function feedMouseOut(id) {
+	try {
+		feed_under_pointer = undefined;
+	} catch (e) {
+		exception_error("feedMouseOut", e);
+	}
+}
+

functions.js

@@ -262,6 +262,8 @@ function getVisibleUnreadHeadlines() {
 
 	var rows = new Array();
 
+	if (!content) return rows;
+
 	for (i = 0; i < content.rows.length; i++) {
 		var row_id = content.rows[i].id.replace("RROW-", "");
 		if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
@@ -277,6 +279,8 @@ function getVisibleHeadlineIds() {
 
 	var rows = new Array();
 
+	if (!content) return rows;
+
 	for (i = 0; i < content.rows.length; i++) {
 		var row_id = content.rows[i].id.replace("RROW-", "");
 		if (row_id.length > 0) {

functions.php

@@ -1533,7 +1533,8 @@
 		$feed = "<a title=\"$link_title\" id=\"FEEDL-$feed_id\" 
 			href=\"javascript:viewfeed('$feed_id', '', false, '', false, 0);\">$feed_title</a>";
 
-		print "<li id=\"FEEDR-$feed_id\" class=\"$class\">";
+		print "<li id=\"FEEDR-$feed_id\" class=\"$class\"
+			onmouseover='feedMouseIn($feed_id)' onmouseout='feedMouseOut($feed_id)'>";
 		if (get_pref($link, 'ENABLE_FEED_ICONS')) {
 			print "$feed_icon";
 		}

tt-rss.js

@@ -1409,3 +1409,17 @@ function hotkey_handler(e) {
 	}
 }
 
+function mouse_handler(e) {
+	try {
+		var r_mouse = false;
+
+		if (window.event) {
+			r_mouse = window.event.button == 2;
+		} else if (e) {
+			r_mouse = e.which == 3;
+		}
+
+	} catch (e) {
+		exception_error("mouse_handler", e);
+	}
+}

viewfeed.js

@@ -1091,6 +1091,8 @@ function cdmGetVisibleArticles() {
 	var sel_articles = new Array();
 	var container = document.getElementById("headlinesInnerContainer");
 
+	if (!container) return sel_articles;
+
 	for (i = 0; i < container.childNodes.length; i++) {
 		var child = container.childNodes[i];