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Undo: implement undo of dive site editing

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This one is a bit more tricky. There are two modes: set dive site
and set newly created dive site. This is realized using an OO model
with derived classed. Quite convoluted - but it seems to work.

Moreover, editing a dive site is not simply setting a value,
but the list of dives in a dive site has to be kept up to date.

Finally, we have to inform the dive site list of the changed
number of dives. Therefore add a new signal diveSiteDivesChanged.
To send only one signal per dive site, hook into the undo() and
redo() functions and call the functions of the base class there.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-03-20 21:46:58 +01:00 • committed by Dirk Hohndel
parent 4cb1ceefff
commit 6f574c53a3
10 changed files with 160 additions and 106 deletions
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9
qt-models/divelocationmodel.cpp
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@ -27,6 +27,7 @@ LocationInformationModel::LocationInformationModel(QObject *obj) : QAbstractTabl
connect(&diveListNotifier, &DiveListNotifier::diveSiteAdded, this, &LocationInformationModel::diveSiteAdded);
connect(&diveListNotifier, &DiveListNotifier::diveSiteDeleted, this, &LocationInformationModel::diveSiteDeleted);
connect(&diveListNotifier, &DiveListNotifier::diveSiteChanged, this, &LocationInformationModel::diveSiteChanged);
connect(&diveListNotifier, &DiveListNotifier::diveSiteDivesChanged, this, &LocationInformationModel::diveSiteDivesChanged);
}
int LocationInformationModel::columnCount(const QModelIndex &) const
@ -167,6 +168,14 @@ void LocationInformationModel::diveSiteChanged(struct dive_site *ds, int field)
dataChanged(createIndex(idx, field), createIndex(idx, field));
}
void LocationInformationModel::diveSiteDivesChanged(struct dive_site *ds)
{
int idx = get_divesite_idx(ds, &dive_site_table);
if (idx < 0)
return;
dataChanged(createIndex(idx, NUM_DIVES), createIndex(idx, NUM_DIVES));
}
bool DiveSiteSortedModel::filterAcceptsRow(int sourceRow, const QModelIndex &source_parent) const
{
// TODO: filtering