How to lock preferences per-profile (not for all profiles)?

Question

Hello. I managed to lock some preferences as I needed (plugin states as "ask-to-activate", as seen here: https://support.mozilla.org/en-US/questions/1031649), but I decided to create a new profile for my online banking only. I would like to set these same plugins to "always activate" in it, but their states are locked all over the application (even new profiles). How can I lock preferences individually a single profile only?

Answer 1

Note that you may not have to lock the prefs, but that you can set a new default value to use when you haven't changed a pref from the default.
These functions can be used in the mozilla.cfg file:
defaultPref(); // set new default value
pref(); // set pref, allow changes in current session
lockPref(); // lock pref, disallow changes
*http://mxr.mozilla.org/mozilla-release/source/extensions/pref/autoconfig/src/prefcalls.js
You could probably use code like this to check the location of the current profile and only run the code to lock prefs with a specific profile (adjust the RegExp to match the profile name):
<pre><nowiki>profD = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties).get("ProfD", Ci.nsIFile).path;
if (/xxxxxxxx[.]default$/.test(profD)){
lockPref("<pref name>", <value>);
}</nowiki></pre>