Add ability to define ibus as "keyboard input method"

[rik-shaw]

In gnome-language-selector, there is a combo box to select "keyboard input method". If a user chooses "ibus", then on next login, the ibus daemon will auto-start and there will be the ibus indicator in the system tray (separate from the system keyboard indicator / applet). I believe all this does is symlinks from a users' "~/.xinput.d/en_US" (or whatever defined system language) to "/etc/X11/xinit/xinput.d/ibus".

Functionality is needed in mintlocale to trigger ibus as the keyboard input method.

@clefebvre has noted that this will not include integrating ibus into the c-c-c keyboard module for Cinnamon 2.2 (I will submit a bug to c-c-c for this, targeting Cinnamon 2.4), so this bug is only to have a graphical way to trigger ibus starting for a user (providing its current state: which is the separate keyboard indicator).

[rik-shaw]

UPDATE: as a "stop gap", I think if i trigger starting the ibus daemon through an autostart (ibus-daemon -xrd) it will be be functional. I could incorporate such an autostart at the "system level" by adding a desktop entry to /etc/xdg/autostart, but have it default to being inactive this way: X-GNOME-Autostart-enabled=false. I assume this method will still work.

Furthermore, regarding triggering ibus, it would seem confusing to do it in mintlocale, as this isn't a "locale thing" but rather a "keyboard input thing" (ibus doesn't change a locale, it just adds a keyboard input method). So, I don't know that you want to put in the keyboard input method toggle there like gnome-language-selector did.

So, if you wanted to "stop gap" patch users being able to start ibus for Mint17 without users defining their own autostart and you could put in a combobox, it would seem better at the "cinnamon-settings keyboard | keyboard layouts" location and leave mintlocale untainted?

[rik-shaw]

update #2: Mint 17 includes the "im-config" app, which allows a user to define ibus as the default input method (via a GUI). Can even do it with terminal this way:

im-config -n ibus

To reset to default, use

im-config -n REMOVE