How to configure Gmail to open mailto-links in on-site compose window?

I'm trying to make Gmail open a small compose window on the actual site containing the mailto-link, instead of opening a new tab. I don't even know if this is possible. My setup makes searching for answers more difficult than I expected.

I am running Ubuntu 12.10 with Chromium. To make Gmail my default mail client, I had to install Gnome Gmail. This works just fine except for the mentioned problem. I can't find any conf-file for Gnome Gmail, but I'm surprised if it does not exist.

Updated after user176315's help:

Changing

webbrowser.open_new_tab(gmailurl)

to

webbrowser.open_new(gmailurl)

in /usr/bin/gnome-gmail only resulted in Gmail opening the mailto-link in the same window. Python's documentation on webbrowser.open_new() says:

Open url in a new window of the default browser, if possible, otherwise, open url in the only browser window.

I also tried

webbrowser.open(gmailurl, new=1)

but this did the same as open_new(gmailurl)

It kinda feels like Chromium is not supported by Python in some way.

Solution 1:

GNOME Gmail configuration information is stored in gconf, soon to be dconf. Tab/new window behavior is not a configuration parameter. There is no other configuration file.

You could modify the /usr/bin/gnome-gmail script to open the compose screen as a new window.

Change

webbrowser.open_new_tab( gmailurl )

to

webbrowser.open_new( gmailurl )

At the bottom of the script.