From 9cfc649af5e3a397f530475a16a2ae51965e948b Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@bah.spb.su>
Date: Thu, 25 Aug 2005 12:20:50 +0100
Subject: [PATCH] keyboard navigation and cute active headline selection

---
 backend.php  |  25 ++++++++++++
 functions.js |  18 +++++++++
 tt-rss.js    | 107 +++++++++++++++++++++++++++++++++++++++++++++++----
 3 files changed, 142 insertions(+), 8 deletions(-)

diff --git a/backend.php b/backend.php
index 0105253d..bc852474 100644
--- a/backend.php
+++ b/backend.php
@@ -109,6 +109,31 @@
 
 		$subop = $_GET["subop"];
 
+		if ($subop == "getRelativeId") {
+			$mode = $_GET["mode"];
+			$id = $_GET["id"];
+			$feed_id = $_GET["feed"];
+
+			if ($id != 'false' && $feed_id != 'false') {
+
+				if ($mode == 'next') {
+					$check_qpart = "updated >= ";
+				} else {
+					$idcheck_qpart = "id < '$id'";
+				}
+
+				$result = pg_query("SELECT id FROM ttrss_entries WHERE
+					$check_qpart AND
+					feed_id = '$feed_id'
+					ORDER BY updated DESC LIMIT 1");
+
+				$result_id = pg_fetch_result($result, 0, "id");
+
+				print "M $mode : P $id -> P $result_id : F $feed_id";
+
+			}
+		}
+
 		if ($subop == "forceUpdateAllFeeds") {
 			update_all_feeds($link, true);			
 			outputFeedList($link);
diff --git a/functions.js b/functions.js
index 8cd5b47c..0b05ae2e 100644
--- a/functions.js
+++ b/functions.js
@@ -1,3 +1,17 @@
+function notify_callback() {
+	var container = document.getElementById('notify');
+	if (xmlhttp.readyState == 4) {
+		container.innerHTML=xmlhttp.responseText;
+	}
+}
+
+function rpc_notify_callback() {
+	var container = document.getElementById('notify');
+	if (xmlhttp_rpc.readyState == 4) {
+		container.innerHTML=xmlhttp_rpc.responseText;
+	}
+}
+
 function param_escape(arg) {
 	if (typeof encodeURIComponent != 'undefined')
 		return encodeURIComponent(arg);	
@@ -64,6 +78,10 @@ function hotkey_handler(e) {
 		localPiggieFunction(false);
 	}
 
+	if (typeof localHotkeyHandler != 'undefined') {
+		localHotkeyHandler(keycode);
+	}
+
 }
 
 
diff --git a/tt-rss.js b/tt-rss.js
index 455a202c..5f34f311 100644
--- a/tt-rss.js
+++ b/tt-rss.js
@@ -9,6 +9,9 @@ var xmlhttp_rpc = false;
 var total_unread = 0;
 var first_run = true;
 
+var active_post_id = false;
+var active_feed_id = false;
+
 /*@cc_on @*/
 /*@if (@_jscript_version >= 5)
 // JScript gives us Conditional compilation, we can cope with old IE versions.
@@ -32,13 +35,6 @@ if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
 
 }
 
-function notify_callback() {
-	var container = document.getElementById('notify');
-	if (xmlhttp.readyState == 4) {
-		container.innerHTML=xmlhttp.responseText;
-	}
-}
-
 function feedlist_callback() {
 	var container = document.getElementById('feeds');
 	if (xmlhttp.readyState == 4) {
@@ -228,6 +224,9 @@ function viewfeed(feed, skip, subop) {
 		printLockingError();
 		return
 	}
+	
+	active_feed_id = feed;
+	active_post_id = false;
 
 	xmlhttp.open("GET", "backend.php?op=viewfeed&feed=" + param_escape(feed) +
 		"&skip=" + param_escape(skip) + "&subop=" + param_escape(subop) , true);
@@ -238,6 +237,17 @@ function viewfeed(feed, skip, subop) {
 
 }
 
+function cleanSelectedHeadlines() {
+	var content = document.getElementById("headlinesList");
+
+	var rows = new Array();
+
+	for (i = 0; i < content.rows.length; i++) {
+		content.rows[i].className = content.rows[i].className.replace("Selected", "");
+	}
+
+}
+
 function view(id,feed_id) {
 
 	if (xmlhttp.readyState != 4 && xmlhttp.readyState != 0) {
@@ -256,12 +266,16 @@ function view(id,feed_id) {
 			var feedr = document.getElementById("FEEDR-" + feed_id);
 			feedr.className = feedr.className.replace("Unread", "");
 		}
-	
+
 		total_unread--;
 
 		update_title(); 
 	}	
 
+	cleanSelectedHeadlines();
+
+	crow.className = crow.className + "Selected";
+
 	var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 
 	if (upd_img_pic) {
@@ -270,6 +284,8 @@ function view(id,feed_id) {
 
 	document.getElementById('content').innerHTML='Loading, please wait...';		
 
+	active_post_id = id;
+
 	xmlhttp.open("GET", "backend.php?op=view&id=" + param_escape(id), true);
 	xmlhttp.onreadystatechange=view_callback;
 	xmlhttp.send(null);
@@ -320,6 +336,81 @@ function localPiggieFunction(enable) {
 	}
 }
 
+function relativeid_callback() {
+
+	if (xmlhttp_rpc.readyState == 4) {
+		notify(xmlhttp_rpc.responseText);
+	}
+
+}
+
+function getVisibleHeadlineIds() {
+
+	var content = document.getElementById("headlinesList");
+
+	var rows = new Array();
+
+	for (i = 0; i < content.rows.length; i++) {
+		var row_id = content.rows[i].id.replace("RROW-", "");
+		if (row_id.length > 0) {
+				rows.push(row_id);	
+		}
+	}
+
+	return rows;
+
+}
+
+function moveToPost(mode) {
+
+/*	var query_str = "backend.php?op=rpc&subop=getRelativeId&mode=" + mode + 
+		"&feed=" + active_feed_id + "&id=" + active_post_id;
+
+//	notify(query_str);
+
+	if (xmlhttp_rpc.readyState == 4 || xmlhttp_rpc.readyState == 0) {
+		xmlhttp_rpc.open("GET", query_str, true);
+		xmlhttp_rpc.onreadystatechange=relativeid_callback;
+		xmlhttp_rpc.send(null);
+	} else {
+		printLockingError();
+	} */
+
+	var rows = getVisibleHeadlineIds();
+
+	var prev_id;
+	var next_id;
+
+	for (var i = 0; i < rows.length; i++) {
+		if (rows[i] == active_post_id) {
+			prev_id = rows[i-1];
+			next_id = rows[i+1];			
+		}
+	}
+
+	if (mode == "next" && next_id != undefined) {
+		view(next_id, active_feed_id);
+	}
+
+	if (mode == "prev" && prev_id != undefined) {
+		view(prev_id, active_feed_id);
+	}
+
+}
+
+function localHotkeyHandler(keycode) {
+
+//	notify(keycode);
+
+	if (keycode == 78) {
+		moveToPost('next');
+	}
+
+	if (keycode == 80) {
+		moveToPost('prev');
+	}
+}
+
 
 function init() {
 	updateFeedList(false, false);
-- 
2.39.5