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Line 1: − + − [[Category:Feature|Launch Limits]] Line 38:
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Line 99: − maximum_instances+
no edit summary
<noinclude>
<noinclude>
[[Category:Feature Page Incomplete]]
[[Category:FeatureLanded|Launch Limits]]
[[Category:Features requested by OLPC AU]]</noinclude>
[[Category:Features requested by OLPC AU]]</noinclude>
is open (e.g., SL #4554). This patch sets a limit on the number open
is open (e.g., SL #4554). This patch sets a limit on the number open
instances of an activity based on a new field in activity.info:
instances of an activity based on a new field in activity.info:
single_instance.
If and only if the maximum_instances field is present in
If and only if the single_instance field is present in
activity.info, is it used to set the limit of open instances.
activity.info, is it used to set the limit of open instances.
single_instance = yes
== Benefit to Sugar ==
== Benefit to Sugar ==
Also impacts the activity.info file of any activity that wishes to set a limit to the number of open instances:
Also impacts the activity.info file of any activity that wishes to set a limit to the number of open instances:
single_instance = yes
== How To Test ==
== How To Test ==
Maximum instances:
Maximum instances:
# Add a maximum_instances field to the activity.info file of an activity
# Add a single_instance = yes field to the activity.info file of an activity
# Launch repeatedly and see if a limit is set
# Launch repeatedly and see if a limit is set
Maximum launches:
Maximum launches:
# From terminal gconftool-2 -t int -s /desktop/sugar/maximum_number_of_open_activities 4
# From terminal gconftool-2 -t int -s /desktop/sugar/maximum_number_of_open_activities 4
# reboot
# See if more than 4 activities can be launched
# See if more than 4 activities can be launched
# From terminal gconftool-2 -u /desktop/sugar/maximum_number_of_open_activities
# From terminal gconftool-2 -u /desktop/sugar/maximum_number_of_open_activities
# reboot
# See if there is any limit to the number of activities that can be launched
# See if there is any limit to the number of activities that can be launched
===Notes on using Gconf===
The previous "how to test" section assumes familiarity with Gconf. Gconf is the Gnome preferences configuration system. It is being used to store Sugar preferences in this case. You can start the tool from the command line in Terminal. The -2 in gconftool-2 means that you are using version 2 of Gconf. Typical switches are
-s set a value
-u unset a value
-g get (print) a value
-t set the type (eg int) of a value
== User Experience ==
== User Experience ==
The new (optional) field in the activity.info file is:
The new (optional) field in the activity.info file is:
single_instance
== Release Notes ==
== Release Notes ==