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2019-11-19Filter: split out filter from modelGravatar Berthold Stoeger
Split out the actual filtering from the MultiFilterSortModel. Create a DiveFilter class that does the actual filtering. Currently, mobile and desktop have their own version of this class, though ultimately we may want to merge them. The idea here is that the trip-model and undo-commands have direct access to the filter-function and thus can take care of keeping track of the number of shown dives, etc. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-11-19Filter: move calculation of shown dives to undo commandGravatar Berthold Stoeger
The filter-model was catching dives-added / dives-deleted signals from the models to keep track of the number of shown dives. To simplify the data flow, do this directly in the undo-command. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-11-14Refactoring: move undo commands to top levelGravatar Berthold Stoeger
In the future we might want to use undo-commands for mobile as well (even if not implementing undo). Therefore, move the undo-command source from desktop-widgets to their own commands top-level folder. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>