getNeighborIds: add scope, add automatic prefetch for articles under mouse

[tt-rss.git] / functions.js

diff --git a/functions.js b/functions.js
index 22d1ebb9ad2826fe4983fa39783c94b35d847e20..f716f350ec319cb79a08610efc3de3b8120b4e5c 100644 (file)
--- a/functions.js
+++ b/functions.js
@@ -1477,9 +1477,11 @@ function explainError(code) {
 }
 
 // this only searches loaded headlines list, not in CDM
-function getRelativePostIds(id) {
+function getRelativePostIds(id, limit) {
 
-       debug("getRelativePostIds: " + id);
+       if (!limit) limit = 3;
+
+       debug("getRelativePostIds: " + id + " limit=" + limit);
 
        var ids = new Array();
        var container = document.getElementById("headlinesList");
@@ -1491,13 +1493,23 @@ function getRelativePostIds(id) {
                        var r_id = rows[i].id.replace("RROW-", "");
 
                        if (r_id == id) {
-                               if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
+/*                             if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
                                if (i > 1) ids.push(rows[i-2].id.replace("RROW-", ""));
                                if (i > 2) ids.push(rows[i-3].id.replace("RROW-", ""));
 
                                if (i < rows.length-1) ids.push(rows[i+1].id.replace("RROW-", ""));
                                if (i < rows.length-2) ids.push(rows[i+2].id.replace("RROW-", ""));
-                               if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", ""));
+                               if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", "")); */
+
+                               for (var k = 1; k <= limit; k++) {
+                                       var nid = false;
+
+                                       if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
+                                       if (nid) ids.push(nid);
+
+                                       if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
+                                       if (nid) ids.push(nid);
+                               }
 
                                return ids;
                        }