Auto logout chrome extension for Gmail ~ A Developer Journey who codes for fun

Hello Friends, In the last article we learned to create a sample chrome extension. Here we are going to create auto logout Gmail script as an extension.

In case you want to learn how to create a sample extension please visit this link. So here we are not going to learn the basics of extension. Lets go through the code.

Step 1 - Create a manifest.json file. It should contain a valid json content –

e.g –

{
  "manifest_version": 2,
  "name": "Logout from Gmail",
  "description": "Auto logout from Gmail after 5 minute.",
  "version": "1.0",
  "author": "Saurabh Singh",
  "browser_action": {
    "default_title":"You will be logged out in 5 minute.",
    "default_icon": "icon.png",
    "default_popup": "popup.html"  },
  "content_scripts":[
    {
      "matches" : ["https://mail.google.com/*"],
      "js" : ["Gmail.js"]
    }],
  "permissions": [
    "activeTab",
    "idle",
    "storage",
    "tabCapture",
    "tabs",
    "https://mail.google.com/*"  ]
}

Step 2- In content Script we mentioned a js file which will be loaded after adding extension at chrome. Let’s see the code.

var timer = window.setInterval(logout, 500000);
function Validate(object){
   if(typeof object === 'undefined')
   {
      return true;
   }   return false;
}
function logout() {
   var signoutButton = document.getElementById("gb_71");
   if (!Validate(signoutButton)) {
      alert("Time is up. You will be logged out");
      signoutButton.click();
   }
   clearTimeout(timer);
}

Step 3 – Create an icon file icon.png and place it at the same folder structure.

<html>
<head>
    <style>
        body {
            font-family: "Segoe UI", "Lucida Grande", Tahoma, sans-serif;
            font-size: 100%;
        }
        #status {
            /* avoid an excessively wide status text */
            white-space: pre;
            text-overflow: ellipsis;
            overflow: hidden;
        }
    </style>
    </head>
<body>
<h4>Auto Logout from Gmail</h4></body>
</html>

We are good with our Auto log out facebook extension. In case you want to download the code please ClickMe.

A Developer Journey who codes for fun

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Auto logout chrome extension for Gmail

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