There was a plan to turn the Firefox add-on install dialog into a doorhanger dialog (bug 588266). This has been abandoned in favour of an approach using tabs (bug 643020). Rather than let the work for the former approach go to waste, we are releasing it as an add-on.
- It only works for remote installs. For local installs, the current dialog shows.
- Clicking anywhere outside the doorhanger dismisses it and cancels the install.
- Switching to a new tab or window when the doorhanger is open cancels the install.
If you feel like it is an experiment worth pursuing further, the source is available on github.