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undo: implement gas switch

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This is a bit hairy as - in theory - one gas switch can remove
other gas switch(es) at the same timestamp. However, I did not
find a way to test it. Moreover, it is not clear whether the
dive-tabs are properly updated on undo/redo.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2020-03-04 21:10:05 +01:00
parent c585fd9f8e
commit 0bd821183d
6 changed files with 83 additions and 20 deletions
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21
profile-widget/profilewidget2.cpp
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@ -1645,26 +1645,7 @@ void ProfileWidget2::changeGas(int tank, int seconds)
if (!current_dive || tank < 0 || tank >= current_dive->cylinders.nr)
return;
// if there is a gas change at this time stamp, remove it before adding the new one
struct event *gasChangeEvent = current_dc->events;
while ((gasChangeEvent = get_next_event_mutable(gasChangeEvent, "gaschange")) != NULL) {
if (gasChangeEvent->time.seconds == seconds) {
remove_event(gasChangeEvent);
gasChangeEvent = current_dc->events;
} else {
gasChangeEvent = gasChangeEvent->next;
}
}
add_gas_switch_event(current_dive, current_dc, seconds, tank);
// this means we potentially have a new tank that is being used and needs to be shown
fixup_dive(current_dive);
invalidate_dive_cache(current_dive);
// FIXME - this no longer gets written to the dive list - so we need to enableEdition() here
emit updateDiveInfo();
mark_divelist_changed(true);
replot();
Command::addGasSwitch(current_dive, dc_number, seconds, tank);
}
#endif