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// SPDX-License-Identifier: GPL-2.0
// This header files declares two linear models used by the mobile UI.
//
// MobileListModel presents a list of trips and optionally the dives of
// one expanded trip. It is used for quick navigation through trips.
//
// MobileSwipeModel gives a linearized view of all dives, sorted by
// trip. Even if there is temporal overlap of trips, all dives of
// a trip are listed in a contiguous block. This model is used for
// swiping through dives.
#ifndef MOBILELISTMODEL_H
#define MOBILELISTMODEL_H
#include "divetripmodel.h"
// This is the base class of the mobile-list model. All it does
// is exporting the various dive fields as roles.
class MobileListModelBase : public QAbstractItemModel {
Q_OBJECT
public:
enum Roles {
IsTopLevelRole = DiveTripModelBase::LAST_ROLE + 1,
DiveDateRole,
TripIdRole,
TripNrDivesRole,
TripShortDateRole,
TripTitleRole,
DateTimeRole,
IdRole,
NumberRole,
LocationRole,
DepthRole,
DurationRole,
DepthDurationRole,
RatingRole,
VizRole,
SuitRole,
AirTempRole,
WaterTempRole,
SacRole,
SumWeightRole,
DiveMasterRole,
BuddyRole,
TagsRole,
NotesRole,
GpsDecimalRole,
GpsRole,
NoDiveRole,
DiveSiteRole,
CylinderRole,
GetCylinderRole,
CylinderListRole,
SingleWeightRole,
StartPressureRole,
EndPressureRole,
FirstGasRole,
SelectedRole,
DiveInTripRole,
TripAbove,
TripBelow,
TripLocationRole,
TripNotesRole,
IsInvalidRole
};
QHash<int, QByteArray> roleNames() const override;
protected:
DiveTripModelBase *source;
MobileListModelBase(DiveTripModelBase *source);
private:
int columnCount(const QModelIndex &parent) const override;
QModelIndex index(int row, int column, const QModelIndex &parent) const override;
QModelIndex parent(const QModelIndex &index) const override;
};
class MobileListModel : public MobileListModelBase {
Q_OBJECT
public:
MobileListModel(DiveTripModelBase *source);
void expand(int row);
void unexpand();
void invalidate();
Q_INVOKABLE void toggle(int row);
Q_PROPERTY(int shown READ shown NOTIFY shownChanged);
signals:
void shownChanged();
private:
struct IndexRange {
bool visible;
int first, last;
};
std::vector<IndexRange> rangeStack;
QModelIndex sourceIndex(int row, int col, int parentRow = -1) const;
int numSubItems() const;
int mapRowFromSourceTopLevel(int row) const;
int mapRowFromSourceTopLevelForInsert(int row) const;
int mapRowFromSourceTrip(const QModelIndex &parent, int parentRow, int row) const;
int mapRowFromSource(const QModelIndex &parent, int row) const;
int invertRow(const QModelIndex &parent, int row) const;
IndexRange mapRangeFromSource(const QModelIndex &parent, int first, int last) const;
IndexRange mapRangeFromSourceForInsert(const QModelIndex &parent, int first, int last) const;
QModelIndex mapFromSource(const QModelIndex &idx) const;
QModelIndex mapToSource(const QModelIndex &idx) const;
static void updateRowAfterRemove(const IndexRange &range, int &row);
static void updateRowAfterMove(const IndexRange &range, const IndexRange &dest, int &row);
QVariant data(const QModelIndex &index, int role) const override;
int rowCount(const QModelIndex &parent) const override;
int shown() const;
int expandedRow;
private slots:
void prepareRemove(const QModelIndex &parent, int first, int last);
void doneRemove(const QModelIndex &parent, int first, int last);
void prepareInsert(const QModelIndex &parent, int first, int last);
void doneInsert(const QModelIndex &parent, int first, int last);
void prepareMove(const QModelIndex &parent, int first, int last, const QModelIndex &dest, int destRow);
void doneMove(const QModelIndex &parent, int first, int last, const QModelIndex &dest, int destRow);
void changed(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles);
};
class MobileSwipeModel : public MobileListModelBase {
Q_OBJECT
public:
MobileSwipeModel(DiveTripModelBase *source);
static MobileSwipeModel *instance();
void resetModel(DiveTripModelBase::Layout layout); // Switch between tree and list view
void invalidate();
private:
struct IndexRange {
int first, last;
};
std::vector<IndexRange> rangeStack;
std::vector<int> firstElement; // First element of top level item.
int rows;
QVariant data(const QModelIndex &index, int role) const override;
int rowCount(const QModelIndex &parent) const override;
// Since accesses to data come in bursts, we cache map-to-source lookup.
// Note that this is not thread safe. We suppose that the model is only ever accessed from the UI thread.
mutable int cachedRow = -1;
mutable QModelIndex cacheSourceParent;
mutable int cacheSourceRow = -1;
// Translate indices from/to source
int topLevelRowCountInSource(int sourceRow) const;
QModelIndex mapToSource(const QModelIndex &index) const;
int mapTopLevelFromSource(int row) const;
int mapTopLevelFromSourceForInsert(int row) const;
int elementCountInTopLevel(int row) const;
int mapRowFromSource(const QModelIndex &parent, int row) const;
int mapRowFromSource(const QModelIndex &parent) const;
int mapRowFromSourceForInsert(const QModelIndex &parent, int row) const;
IndexRange mapRangeFromSource(const QModelIndex &parent, int first, int last) const;
void invalidateSourceRowCache() const;
void updateSourceRowCache(int row) const;
// Update elements
void initData();
int removeTopLevel(int begin, int end);
void addTopLevel(int row, std::vector<int> items);
void updateTopLevel(int row, int delta);
signals:
void currentDiveChanged(QModelIndex index);
private slots:
void doneReset();
void prepareRemove(const QModelIndex &parent, int first, int last);
void doneRemove(const QModelIndex &parent, int first, int last);
void prepareInsert(const QModelIndex &parent, int first, int last);
void doneInsert(const QModelIndex &parent, int first, int last);
void prepareMove(const QModelIndex &parent, int first, int last, const QModelIndex &dest, int destRow);
void doneMove(const QModelIndex &parent, int first, int last, const QModelIndex &dest, int destRow);
void changed(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles);
};
// This convenience class provides access to the two mobile models.
// Moreover, it provides an interface to the source trip-model.
class MobileModels {
public:
static MobileModels *instance();
MobileListModel *listModel();
MobileSwipeModel *swipeModel();
void invalidate(); // Invalidate all entries to force a re-render.
private:
MobileModels();
DiveTripModelTree source;
MobileListModel lm;
MobileSwipeModel sm;
};
#endif
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