Use XDG autostart to launch indicator

[Luca Ferretti]

Currently the UbuntuOne indicator needs to be manually launched. Could be good use the XDG autostart spec[1] and gnome-session facilities to automatically launch it at login.

Basically, all you need is move installed .desktop from /usr/share/applications (i.e. $XDG_DATA_DIRS/applications/) to /etc/xdg/autostart (i.e. $XDG_CONFIG_DIRS).
This will make also Ubuntu One Indicator entry appears in Startup Applications preferences tool, allowing users to enable/disable.

In order to avoid launching U1 Indicator when the user doesn't have an U1 account, you could use the same trick available in
/etc/xdg/autostart/ubuntuone-launch.desktop, i.e. use

    Exec=/bin/sh -c '[ -d "$HOME/Ubuntu One" ] && ubuntuone-indicator'

as Exec key (unless this check is yet perfomed in ubuntone-indicator itself).

Please also note that ubuntuone-launch.desktop is using "X-GNOME-Autostart-Delay=30", so you could delay u1-indicator launch too in order to avoid loading immediately at login (slowing down login itself)

[1] http://standards.freedesktop.org/autostart-spec/autostart-spec-0.5.html

[Roman Yepishev (rye)]

My original intention to prevent autostarting was to prevent early startup of syncdaemon that would have caused even more login slowdowns. Now that is fixed I can create autostart entry.

The question is whether to add it globally or for the user upon initial application startup?

At the moment I see occasional (though rare) crashes of ubuntuone-indicator due to BadMatch X error. That's actually the reason why indicator does not hide itself when idle. If it is not shown then it must have crashed.

I think I should set ubuntuone-indicator to auto-restart after failures but that would clash with existing entries for ubuntuone-indicator (most likely) so I will need to handle the existing .desktop file in autostart directory too.