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Undo: make "move dive computer to front" undoable

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Instead of the elegant solution that just modifies the dive,
keep two copies and add either the old or the new copy. This
is primitive, but it trivially keeps the dives in the right order.
The order might change on renumbering the dive computers.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-05-17 22:22:55 +02:00 • committed by Dirk Hohndel
parent f0307abf50
commit eba6e76b96
7 changed files with 106 additions and 23 deletions
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17
desktop-widgets/command_divelist.h
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@ -236,6 +236,23 @@ public:
SplitDiveComputer(dive *d, int dc_num);
};
// When moving the dive computer to the front, we go the ineffective,
// but easy way: We keep two full copies of the dive (before and after).
// Removing and readding assures that the dive stays at the correct
// position in the list (the dive computer list is used for sorting dives).
class MoveDiveComputerToFront : public DiveListBase {
public:
MoveDiveComputerToFront(dive *d, int dc_num);
private:
void undoit() override;
void redoit() override;
bool workToBeDone() override;
// For redo and undo
DivesAndTripsToAdd diveToAdd;
DivesAndSitesToRemove diveToRemove;
};
class MergeDives : public DiveListBase {
public:
MergeDives(const QVector<dive *> &dives);