enable cache of feedlist data

feedlist.js

@@ -30,13 +30,25 @@ function viewCategory(cat) {
 	return false;
 }
 
+function render_feedlist(data) {
+	try {
+
+		var f = document.getElementById("feeds-frame");
+		f.innerHTML = data;
+		cache_invalidate("FEEDLIST");
+		cache_inject("FEEDLIST", data);
+		feedlist_init();
+
+	} catch (e) {
+		exception_error("render_feedlist", e);
+	}
+}
+
 function feedlist_callback2(transport) {
 	try {
 		debug("feedlist_callback2");
 		if (!transport_error_check(transport)) return;
-		var f = document.getElementById("feeds-frame");
-		f.innerHTML = transport.responseText;
-		feedlist_init();
+		render_feedlist(transport.responseText);
 	} catch (e) {
 		exception_error("feedlist_callback2", e);
 	}
@@ -257,6 +269,7 @@ function viewfeed(feed, subop, is_cat, subop_param, skip_history, offset) {
 			f.innerHTML = cache_find_param(cache_prefix + feed, unread_ctr);
 
 			request_counters();
+			remove_splash();
 
 		} else {
 

tt-rss.js

@@ -510,7 +510,14 @@ function init_second_stage() {
 		daemon_refresh_only = getInitParam("daemon_refresh_only") == 1;
 		feeds_sort_by_unread = getInitParam("feeds_sort_by_unread") == 1;
 
+		var fl = cache_find("FEEDLIST");
+
+		if (fl) {
+			render_feedlist(fl);
+			request_counters();
+		} else {
 			setTimeout('updateFeedList(false, false)', 50);
+		}
 
 		debug("second stage ok");
 
@@ -1473,6 +1480,8 @@ function init_gears() {
 			db.execute("CREATE TABLE IF NOT EXISTS cache (id text, article text, param text, added text)");
 		}	
 	
+		cache_expire();
+
 	} catch (e) {
 		exception_error("init_gears", e);
 	}

viewfeed.js

@@ -1500,6 +1500,11 @@ function cache_inject(id, article, param) {
 function cache_find(id) {
 
 	if (db) {
+		var rs = db.execute("SELECT article FROM cache WHERE id = ?", [id]);
+
+		if (rs.isValidRow()) {
+			return rs.field(0);
+		}
 
 	} else {
 		for (var i = 0; i < article_cache.length; i++) {
@@ -1572,7 +1577,13 @@ function cache_check_param(id, param) {
 }
 
 function cache_expire() {
-	if (!db) {
+	if (db) {
+		var date = new Date();
+		var ts = Math.round(date.getTime() / 1000);
+
+		db.execute("DELETE FROM cache WHERE added < ? - 600", [ts]);
+
+	} else {
 		while (article_cache.length > 25) {
 			article_cache.shift();
 		}