98a29ae12c
Use set_active and save events to keep track of the time, in seconds, that the activity is on the main screen. The time is calculated and stored each time an activity is open/resumed and closed. Therefore, each activity entry will have an array of seconds for each time it was used. This makes a 1 to 1 relationship between the spent and lauch times. In orders words, we can reflect not only the "when", but also the " for how long". Even though this time does not necessarily represents the real time the user "used" the activity, it is a low-cost approach for reflecting time. This is a long requested featured from deployments that have been using statistics tools on journal metadata, and this patch is already being used by OLPC-AU. Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org> |
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