From 525116d484a7a2589fc8ad891af3e14ff07a3724 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@madoka.spb.ru>
Date: Tue, 23 Aug 2005 07:13:28 +0100
Subject: [PATCH] asynchronous feed updating

---
 backend.php | 12 +++++++-----
 tt-rss.js   | 40 +++++++++++++++++++++++++++++++++++-----
 2 files changed, 42 insertions(+), 10 deletions(-)

diff --git a/backend.php b/backend.php
index 012396182..0a91a6412 100644
--- a/backend.php
+++ b/backend.php
@@ -17,11 +17,13 @@
 
 		$subop = $_GET["subop"];
 
-		if ($subop == "forceUpdateAll") {
-			update_all_feeds($link, true);
+		if ($subop == "forceUpdateAllFeeds") {
+			print "[rpc] forceUpdateAll";
+			update_all_feeds($link, true);			
 		}
 
-		if ($subop == "updateAll") {
+		if ($subop == "updateAllFeeds") {
+			print "[rpc] updateAll";
 			update_all_feeds($link, false);
 		}
 		
@@ -49,7 +51,7 @@
 			pg_query("UPDATE ttrss_entries SET last_read = NOW(),unread = false");
 		}
 
-		update_all_feeds($link, $fetch);
+	//	update_all_feeds($link, $fetch);
 		
 		$result = pg_query("SELECT *,
 			(SELECT count(id) FROM ttrss_entries 
@@ -101,7 +103,7 @@
 
 		print "<p align=\"center\">All feeds: 
 			<a class=\"button\" 
-				href=\"javascript:updateFeedList(false,true)\">Update</a>";
+				href=\"javascript:scheduleFeedUpdate()\">Update</a>";
 
 		print "&nbsp;<a class=\"button\" 
 				href=\"javascript:catchupAllFeeds()\">Mark as read</a></p>";
diff --git a/tt-rss.js b/tt-rss.js
index c78a4287d..125dbad76 100644
--- a/tt-rss.js
+++ b/tt-rss.js
@@ -4,8 +4,10 @@
 */
 
 var xmlhttp = false;
+var xmlhttp_rpc = false;
 
 var total_unread = 0;
+var first_run = true;
 
 /*@cc_on @*/
 /*@if (@_jscript_version >= 5)
@@ -24,6 +26,8 @@ try {
 
 if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
 	xmlhttp = new XMLHttpRequest();
+	xmlhttp_rpc = new XMLHttpRequest();
+
 }
 
 function printLockingError() {
@@ -49,7 +53,12 @@ function feedlist_callback() {
 			update_title();
 		}
 
-		notify("");
+		if (first_run) {
+			scheduleFeedUpdate();
+			first_run = false;
+		} else {
+			notify("");
+		}
 	}
 }
 
@@ -92,12 +101,33 @@ function view_callback() {
 	}
 }
 
+function refetch_callback() {
+	if (xmlhttp_rpc.readyState == 4) {
+		// feeds are updated in background
+		updateFeedList(false, false);
+//		notify("All feeds updated");
+	}
+}
 
-function updateFeedList(called_from_timer, fetch) {
+function scheduleFeedUpdate() {
+
+	notify("Updating feeds in background...");
+
+	var query_str = "backend.php?op=rpc&subop=forceUpdateAllFeeds";
+
+	if (xmlhttp_rpc.readyState == 4 || xmlhttp_rpc.readyState == 0) {
+		xmlhttp_rpc.open("GET", query_str, true);
+		xmlhttp_rpc.onreadystatechange=refetch_callback;
+		xmlhttp_rpc.send(null);
+	} else {
+		printLockingError();
+	}
+}
+
+function updateFeedList(silent, fetch) {
 	
-	if (called_from_timer != true) {
-		//document.getElementById("feeds").innerHTML = "Loading feeds, please wait...";
-		notify("Updating feeds...");
+	if (silent != true) {
+		notify("Updating feed list...");
 	}
 
 	var query_str = "backend.php?op=feeds";