Starting a firefox extension when firefox starts up

Question

I wrote a firefox extension to process response and requests. Right now its activated by clicking a menu button. I would like the extension to start running when firefox boots up. Is this possible? Ideally the only interface I want/need to have is inside the add-on manager (disable/uninstall)

Thanks

Answer 1

First, register an overlay on browser.xul in your manifest file:

overlay chrome://browser/content/browser.xul chrome://sample/content/sample.xul

Then, include some JavaScript in your sample.xul. This JavaScript should attach an onload event handler to the window. This will fire every time a new browser window is opened and your code will run.

Alternatively, if you need just one instance of your code to be shared among all windows, consider a full-blown XPCOM component, in which you can register to listen for the profile-after-change event, which is one of the earliest events that occurs on startup, after the profile directory and other services have been established.