From 7b433d8c0262419b6e83bbae6bc8ddcc5ea20f36 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@madoka.spb.ru>
Date: Mon, 28 Nov 2005 07:28:33 +0100
Subject: j,k navigate between feeds

---
 README       |   2 +
 functions.js | 129 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 tt-rss.js    |  15 +++++++
 3 files changed, 145 insertions(+), 1 deletion(-)

diff --git a/README b/README
index 5aa84c53b..55ce000e6 100644
--- a/README
+++ b/README
@@ -30,6 +30,8 @@ Interface:
 	"r" refreshes feed list;
 	"u" refreshes currently selected feed;
 	"a" hides or shows only unread feeds in the feedlist;
+	"j" move to previous feed
+	"k" move to next feed
 
 Requirements:
 	
diff --git a/functions.js b/functions.js
index 3aef7befa..c696ae3e8 100644
--- a/functions.js
+++ b/functions.js
@@ -130,7 +130,11 @@ function hotkey_handler(e) {
 	}
 	
 	if (typeof localHotkeyHandler != 'undefined') {
-		localHotkeyHandler(keycode);
+		try {
+			localHotkeyHandler(keycode);
+		} catch (e) {
+			exception_error(e);
+		}
 	}
 
 }
@@ -545,3 +549,126 @@ function openExternalUrl(url) {
 	var w = window.open(url);
 }
 
+
+function getRelativeFeedId(list, id, direction) {	
+	if (!id) {
+		if (direction == "next") {
+			for (i = 0; i < list.childNodes.length; i++) {
+				var child = list.childNodes[i];
+				if (child.id == "feedCatHolder") {
+					if (child.firstChild) {
+						var cr = getRelativeFeedId(child.firstChild, id, direction);
+						if (cr) return cr;					
+					}
+				} else if (child.id.match("FEEDR-")) {
+					return child.id.replace('FEEDR-', '');
+				}				
+			}
+		}
+
+		// FIXME select last feed doesn't work when only unread feeds are visible
+
+		if (direction == "prev") {
+			for (i = list.childNodes.length-1; i >= 0; i--) {
+				var child = list.childNodes[i];				
+				if (child.id == "feedCatHolder") {
+					if (child.firstChild) {
+						var cr = getRelativeFeedId(child.firstChild, id, direction);
+						if (cr) return cr;					
+					}
+				} else if (child.id.match("FEEDR-")) {
+				
+					if (getCookie("ttrss_vf_hreadf") == 1) {
+						if (child.className != "feed") {
+							alert(child.className);
+							return child.id.replace('FEEDR-', '');						
+						}							
+					} else {
+							return child.id.replace('FEEDR-', '');						
+					}				
+				}				
+			}
+		}
+	} else {
+	
+		var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
+		
+		if (direction == "next") {
+
+			if (feed.nextSibling) {
+
+				var next_feed = feed.nextSibling;
+
+				while (!next_feed.id && next_feed.nextSibling) {
+					next_feed = next_feed.nextSibling;
+				}
+
+				if (getCookie("ttrss_vf_hreadf") == 1) {
+						while (next_feed && next_feed.className == "feed") {
+							next_feed = next_feed.nextSibling;
+						}
+					}
+
+				if (next_feed && next_feed.id.match("FEEDR-")) {
+					return next_feed.id.replace("FEEDR-", "");
+				}				
+			}
+
+			var this_cat = feed.parentNode.parentNode;
+			
+			if (this_cat && this_cat.nextSibling) {
+				while (this_cat = this_cat.nextSibling) {
+					if (this_cat.firstChild && this_cat.firstChild.firstChild) {
+						var next_feed = this_cat.firstChild.firstChild;
+							if (getCookie("ttrss_vf_hreadf") == 1) {
+							while (next_feed && next_feed.className == "feed") {
+								next_feed = next_feed.nextSibling;
+							}
+						}
+						if (next_feed && next_feed.id.match("FEEDR-")) {
+							return next_feed.id.replace("FEEDR-", "");
+						}
+					}
+				}				
+			}
+		} else if (direction == "prev") {
+
+			if (feed.previousSibling) {
+			
+				var prev_feed = feed.previousSibling;
+
+				if (getCookie("ttrss_vf_hreadf") == 1) {
+						while (prev_feed && prev_feed.className == "feed") {
+							prev_feed = prev_feed.previousSibling;
+						}
+					}
+
+				while (!prev_feed.id && prev_feed.previousSibling) {
+					prev_feed = prev_feed.previousSibling;
+				}
+
+				if (prev_feed && prev_feed.id.match("FEEDR-")) {
+					return prev_feed.id.replace("FEEDR-", "");
+				}				
+			}
+
+			var this_cat = feed.parentNode.parentNode;
+			
+			if (this_cat && this_cat.previousSibling) {
+				while (this_cat = this_cat.previousSibling) {
+					if (this_cat.lastChild && this_cat.firstChild.lastChild) {
+						var prev_feed = this_cat.firstChild.lastChild;
+							if (getCookie("ttrss_vf_hreadf") == 1) {
+							while (prev_feed && prev_feed.className == "feed") {
+								prev_feed = prev_feed.previousSibling;
+							}
+						}
+						if (prev_feed && prev_feed.id.match("FEEDR-")) {
+							return prev_feed.id.replace("FEEDR-", "");
+						}
+					}
+				}				
+			}	
+		}
+	}
+}
diff --git a/tt-rss.js b/tt-rss.js
index 795c16453..a2910451e 100644
--- a/tt-rss.js
+++ b/tt-rss.js
@@ -299,6 +299,21 @@ function localHotkeyHandler(keycode) {
 		return toggleDispRead();
 	}
 
+	var f_doc = window.frames["feeds-frame"].document;
+	var feedlist = f_doc.getElementById('feedList');
+
+	if (keycode == 74) { // j
+		var feed = getActiveFeedId();
+		var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
+		if (new_feed) viewfeed(new_feed, 0, '');
+	}
+
+	if (keycode == 75) { // k
+		var feed = getActiveFeedId();
+		var new_feed = getRelativeFeedId(feedlist, feed, 'next');
+		if (new_feed) viewfeed(new_feed, 0, '');
+	}
+
 //	notify("KC: " + keycode);
 
 }
-- 
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