Added unhandled error handler to display any uncaught errors to the user.

README.md

@@ -4,8 +4,8 @@ Easy Session Manager allows you to manage your Firefox session by backing up or
 # Download
 https://addons.mozilla.org/en-US/firefox/addon/easy-session-manager/
 
-# Version: 0.2.3.6
+# Version: 0.2.3.7
-* Updated in place tab loading logic
+* Added unhandled error handler to display any uncaught errors to the user.
 
 
 # Images

src/manifest.json

@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "Easy Session Manager",
-  "version": "0.2.3.6",
+  "version": "0.2.3.7",
   "description": "Easy Session Manager allows you to manage your Firefox session by backing up or loading your saved sessions.",
 
   "browser_specific_settings": {

src/scripts/events.js

@@ -1,4 +1,20 @@
-getSavedSessionIDs();
+window.onload = (eve) => {
+    console.log("Loaded...");
+    getSavedSessionIDs();
+}
+
+window.onerror = function(msg, url, line, col, error) {
+   // Note that col & error are new to the HTML 5 spec and may not be supported in every browser.
+   let suppressErrorAlert = false;
+   let extra  = !col ? '' : '\ncolumn: '  + col;
+   extra     += !error ? '' : '\nerror: ' + error;
+   const data = `Error:  ${msg} \nurl: ${url} \nline: ${line}  ${extra}`
+
+    messageWindow("danger", data, "", -1);
+
+   // If you return true, then error alerts (like in older versions of Internet Explorer) will be suppressed.
+   return suppressErrorAlert;
+};
 
 document.addEventListener("click", (e) => {
     if (e.button == 0) {  // Left click

src/scripts/session-manager.js

@@ -254,8 +254,7 @@ const loadSession = (json = null, replaceTabs = false) => {
                                     url: store[i].link,
                                     index: i + 1
                                 }
-                            : { };    
+                            : { };
-
 
                         tabsApi.create(createOption).catch( async (e) => { 
                             createOption.url = returnReplaceURL(
@@ -264,7 +263,7 @@ const loadSession = (json = null, replaceTabs = false) => {
                                 store[i].link,
                                 "../images/icons/error.png"
                             );
-        
+
                             await tabsApi.create(createOption);
                         });
                     }

src/scripts/utils.js

@@ -1,7 +1,7 @@
 let selectedItem = null;
 
 
-const messageWindow = (type = "warning", message = "No message passed in...", target = "") => {
+const messageWindow = (type = "warning", message = "No message passed in...", target = "", timeout = 3200) => {
     let pTag   = document.createElement("P");
     let text   = document.createTextNode(message);
     let gutter = document.getElementById("message-gutter");
@@ -14,9 +14,11 @@ const messageWindow = (type = "warning", message = "No message passed in...", ta
     pTag.appendChild(text);
     gutter.prepend(pTag);
 
+    timeout = (timeout === -1) ? 6200 : (timeout > 0) ? timeout : 3200;
+
     setTimeout(function () {
         clearChildNodes(gutter);
-    }, 3200);
+    }, timeout);
 }