subsurface/qt-models/divelocationmodel.h
Berthold Stoeger 6f574c53a3 Undo: implement undo of dive site editing
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>
2019-04-12 18:19:07 +03:00

78 lines
2.7 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#ifndef DIVELOCATIONMODEL_H
#define DIVELOCATIONMODEL_H
#include <QAbstractTableModel>
#include <QStringListModel>
#include <QSortFilterProxyModel>
#include "core/units.h"
#define RECENTLY_ADDED_DIVESITE ((struct dive_site *)~0)
struct dive;
struct dive_trip;
class LocationInformationModel : public QAbstractTableModel {
Q_OBJECT
public:
// Common columns, roles and accessor function for all dive-site models.
// Thus, different views can connect to different models.
enum Columns { EDIT, REMOVE, NAME, DESCRIPTION, NUM_DIVES, LOCATION, NOTES, DIVESITE, TAXONOMY, COLUMNS };
enum Roles { DIVESITE_ROLE = Qt::UserRole + 1 };
static QVariant getDiveSiteData(const struct dive_site *ds, int column, int role);
LocationInformationModel(QObject *obj = 0);
static LocationInformationModel *instance();
int columnCount(const QModelIndex &parent) const;
int rowCount(const QModelIndex &parent = QModelIndex()) const;
QVariant data(const QModelIndex &index = QModelIndex(), int role = Qt::DisplayRole) const;
QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
Qt::ItemFlags flags(const QModelIndex &index) const override;
public slots:
void update();
void diveSiteDiveCountChanged(struct dive_site *ds);
void diveSiteAdded(struct dive_site *ds, int idx);
void diveSiteDeleted(struct dive_site *ds, int idx);
void diveSiteChanged(struct dive_site *ds, int field);
void diveSiteDivesChanged(struct dive_site *ds);
};
class DiveSiteSortedModel : public QSortFilterProxyModel {
Q_OBJECT
private:
struct dive_site *getDiveSite(const QModelIndex &idx);
bool filterAcceptsRow(int sourceRow, const QModelIndex &source_parent) const override;
bool lessThan(const QModelIndex &i1, const QModelIndex &i2) const override;
#ifndef SUBSURFACE_MOBILE
bool setData(const QModelIndex &index, const QVariant &value, int role) override;
public slots:
void remove(const QModelIndex &index);
#endif // SUBSURFACE_MOBILE
public:
DiveSiteSortedModel();
QStringList allSiteNames() const;
};
// To access only divesites at the given GPS coordinates with the exception of a given dive site
class GPSLocationInformationModel : public QSortFilterProxyModel {
Q_OBJECT
private:
const struct dive_site *ignoreDs;
location_t location;
bool filterAcceptsRow(int sourceRow, const QModelIndex &source_parent) const override;
public:
GPSLocationInformationModel(QObject *parent = nullptr);
void set(const struct dive_site *ignoreDs, const location_t &);
void setCoordinates(const location_t &);
};
class GeoReferencingOptionsModel : public QStringListModel {
Q_OBJECT
public:
static GeoReferencingOptionsModel *instance();
private:
GeoReferencingOptionsModel(QObject *parent = 0);
};
#endif