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tab-info

CI

This README outlines the details of collaborating on this browser extension

Installation

Install via the chrome web store

Using this extension

Screen Shot 2021-03-07 at 5 33 29 PM

The purpose of this extension is to surface meta information about a web application running in a given browser tab, in an easily visible way.

For example, if you had a web app that was configured to run inside a docker container and you had several nearly identical containers running side-by-side, this could help you easily disambiguate between them.

Encoding information for the extension to discover

All of the information that this extension can display is provided via <meta> tags, found within the <head> of a web application's HTML.

These follow the following convention

<meta type="tab-info" name="PROPERTY_NAME" content="PROPERTY_VALUE" />

For example, one tag that must be present in order for the extension to activate is

<meta type="tab-info" name="enabled" content="true" />

And if you wanted to color code this extension's button in the browser toolbar

<meta type="tab-info" name="button-color" content="#a3a" />

Supported properties

Name Type Description
enabled string "true" in order to activate the extension
button-color string Color of the toolbar button (e.g., "#ff0")
popup-title string Title of the extension popup window
popup-description string Text (markdown) in the extension popup window

Using a remote data source

We also support retrieval of information from a JSON API, through the use of a info-url property

For example if this meta tag is found in a tab's HTML

<meta type="tab-info" name="info-url" content="http://localhost:3001?tabId=abcd1234" />

This extension will make a GET request to http://localhost:3001?tabId=abcd1234 in order to obtain the information that would otherwise have been found in other tab-info meta tags.

GET http://localhost:3001?tabId=abcd1234
{
  "buttonColor": "#aa0",
  "popupTitle": "Dev Environment: Staging",
  "popupDescription": "### Uptime \n 8d 3h 22m \n ### Connecting \n ```\nssh root@127.0.0.1\n``` \n"
}

The resultant UI might look like Screen Shot 2021-03-15 at 4 40 30 PM

NOTE: Information in meta tags will be combined with information found via this API call, with the information from the API call "winning" in the event of any overlap

Contributing to this project

Prerequisites

You will need the following things properly installed on your computer.

Installation

  • git clone <repository-url> this repository
  • cd tab-info
  • yarn

Running / Development

  • node demo-pages/index.js to start an optional demo server, that surfaces pages like http://localhost:3001/demo1.html for testing

    • You may wish to run this script in the background
  • yarn watch-prod

  • In your Edge or Chrome browser, load the entire project folder as an unpacked extension

  • As you change files in this repo, the project will be rebuilt. You will have to go to your extensions management page to reload the extension manually each time this happens

Building

  • yarn build

Further Reading / Useful Links

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