cylinders: only hide cylinders at the end of the list

On the equipment tab, unused cylinders (automatically added,
no pressure data) could be hidden. This was implemented using
a QSortFilterProxyModel.

Apparently, it causes confusion if cylinders in the middle of
the list are hidden. Therefore, only hide cylinders at the end
of the list.

QSortFilterProxyModel seems the wrong tool for that job, so
remove it and add a flag "hideUnused" to the base model. Calculate
the number of cylinders when changing the dive.

This is rather complex, because the same model is used for
the planner (which doesn't hide cylinders) and the equipment
tab (which does). Of course, syncing core and model now becomes
harder. For instance, the caching of the number of rows was removed
in a37939889b and now has to be
readded.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-11-20 09:37:28 +01:00 committed by Dirk Hohndel
parent 3466d0c44d
commit a40b40ae7a
5 changed files with 75 additions and 65 deletions

View file

@ -35,7 +35,7 @@ public:
COMMIT_ROLE, // Save the temporary data to the dive. Must be set with Column == TYPE.
REVERT_ROLE // Revert to original data from dive. Must be set with Column == TYPE.
};
explicit CylindersModel(bool planner, QObject *parent = 0); // First argument: true if this model is used for the planner
explicit CylindersModel(bool planner, bool hideUnused, QObject *parent = 0); // First argument: true if this model is used for the planner
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
int rowCount(const QModelIndex &parent = QModelIndex()) const override;
Qt::ItemFlags flags(const QModelIndex &index) const override;
@ -50,7 +50,6 @@ public:
QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
bool updateBestMixes();
void emitDataChanged();
bool cylinderUsed(int i) const;
signals:
void divesEdited(int num);
@ -66,6 +65,8 @@ slots:
private:
dive *d;
bool inPlanner;
bool hideUnused;
int numRows; // Does not include unused cylinders at the end
// Used if we temporarily change a line because the user is selecting a weight type
int tempRow;
cylinder_t tempCyl;
@ -74,20 +75,9 @@ private:
void initTempCyl(int row);
void clearTempCyl();
void commitTempCyl(int row);
};
// Cylinder model that hides unused cylinders if the pref.show_unused_cylinders flag is not set
class CylindersModelFiltered : public QSortFilterProxyModel {
Q_OBJECT
public:
CylindersModelFiltered(QObject *parent = 0);
CylindersModel *model(); // Access to unfiltered base model
void clear();
void updateDive(dive *d);
private:
CylindersModel source;
bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
bool cylinderUsed(int i) const;
int calcNumRows() const;
void updateNumRows();
};
#endif