exception handling in some code blocks

[tt-rss.git] / functions.js

diff --git a/functions.js b/functions.js
index d236c4e18f7dca1134024aa86cc472fab0b1bf0d..36aa8fd6a7c1abab32d65e32156281708f7eeddc 100644 (file)
--- a/functions.js
+++ b/functions.js
@@ -1,5 +1,10 @@
 var hotkeys_enabled = true;
 
+function exception_error(location, e) {
+       alert("Exception: " + e.name + "\nMessage: " + e.message + 
+               "\nLocation: " + location);
+}
+
 function disableHotkeys() {
        hotkeys_enabled = false;
 }
@@ -330,48 +335,51 @@ if (!xmlhttp_rpc && typeof XMLHttpRequest!='undefined') {
 
 function all_counters_callback() {
        if (xmlhttp_rpc.readyState == 4) {
-
-               if (!xmlhttp_rpc.responseXML) {
-                       notify("[all_counters_callback] backend did not return valid XML");
-                       return;
-               }
-
-               var reply = xmlhttp_rpc.responseXML.firstChild;
-
-               var f_document = parent.frames["feeds-frame"].document;
-
-               for (var l = 0; l < reply.childNodes.length; l++) {
-                       var id = reply.childNodes[l].getAttribute("id");
-                       var ctr = reply.childNodes[l].getAttribute("counter");
-
-                       var feedctr = f_document.getElementById("FEEDCTR-" + id);
-                       var feedu = f_document.getElementById("FEEDU-" + id);
-                       var feedr = f_document.getElementById("FEEDR-" + id);
-
-                       if (feedctr && feedu && feedr) {
-
-                               feedu.innerHTML = ctr;
+               try {
+                       if (!xmlhttp_rpc.responseXML) {
+                               notify("[all_counters_callback] backend did not return valid XML");
+                               return;
+                       }
+       
+                       var reply = xmlhttp_rpc.responseXML.firstChild;
+       
+                       var f_document = parent.frames["feeds-frame"].document;
+       
+                       for (var l = 0; l < reply.childNodes.length; l++) {
+                               var id = reply.childNodes[l].getAttribute("id");
+                               var ctr = reply.childNodes[l].getAttribute("counter");
+       
+                               var feedctr = f_document.getElementById("FEEDCTR-" + id);
+                               var feedu = f_document.getElementById("FEEDU-" + id);
+                               var feedr = f_document.getElementById("FEEDR-" + id);
+       
+                               if (feedctr && feedu && feedr) {
+       
+                                       feedu.innerHTML = ctr;
+               
+                                       if (ctr > 0) {
+                                               feedctr.className = "odd";
+                                               if (!feedr.className.match("Unread")) {
+                                                       var is_selected = feedr.className.match("Selected");
+       
+                                                       feedr.className = feedr.className.replace("Selected", "");
+                                                       feedr.className = feedr.className.replace("Unread", "");
+       
+                                                       feedr.className = feedr.className + "Unread";
+       
+                                                       if (is_selected) {
+                                                               feedr.className = feedr.className + "Selected";
+                                                       }
        
-                               if (ctr > 0) {
-                                       feedctr.className = "odd";
-                                       if (!feedr.className.match("Unread")) {
-                                               var is_selected = feedr.className.match("Selected");
-
-                                               feedr.className = feedr.className.replace("Selected", "");
-                                               feedr.className = feedr.className.replace("Unread", "");
-
-                                               feedr.className = feedr.className + "Unread";
-
-                                               if (is_selected) {
-                                                       feedr.className = feedr.className + "Selected";
                                                }
-
-                                       }
-                               } else {
-                                       feedctr.className = "invisible";
-                                       feedr.className = feedr.className.replace("Unread", "");
-                               }                       
+                                       } else {
+                                               feedctr.className = "invisible";
+                                               feedr.className = feedr.className.replace("Unread", "");
+                                       }                       
+                               }
                        }
+               } catch (e) {
+                       exception_error("all_counters_callback", e);
                }
        }
 }
@@ -506,4 +514,3 @@ function getSelectedTableRowIds(content_id, prefix) {
 
 }
 
-