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// SPDX-License-Identifier: GPL-2.0
// A class that filters dives.
#ifndef DIVE_FILTER_H
#define DIVE_FILTER_H
#include "fulltext.h"
#include "filterconstraint.h"
#include <vector>
#include <QVector>
#include <QStringList>
struct dive;
struct dive_trip;
struct dive_site;
// Structure describing changes of shown status upon applying the filter
struct ShownChange {
QVector<dive *> newShown;
QVector<dive *> newHidden;
bool currentChanged;
};
struct FilterData {
// The mode ids are chosen such that they can be directly converted from / to combobox indices.
enum class Mode {
ALL_OF = 0,
ANY_OF = 1,
NONE_OF = 2
};
FullTextQuery fullText;
StringFilterMode fulltextStringMode = StringFilterMode::STARTSWITH;
std::vector<filter_constraint> constraints;
bool validFilter() const;
bool operator==(const FilterData &) const;
};
class DiveFilter {
public:
static DiveFilter *instance();
void reset();
QString shownText() const;
int shownDives() const;
bool diveSiteMode() const; // returns true if we're filtering on dive site (on mobile always returns false)
std::vector<dive *> visibleDives() const;
#ifndef SUBSURFACE_MOBILE
const QVector<dive_site *> &filteredDiveSites() const;
void startFilterDiveSites(QVector<dive_site *> ds);
void setFilterDiveSite(QVector<dive_site *> ds);
void stopFilterDiveSites();
#endif
void setFilter(const FilterData &data);
ShownChange update(const QVector<dive *> &dives) const; // Update filter status of given dives and return dives whose status changed
ShownChange updateAll() const; // Update filter status of all dives and return dives whose status changed
void diveRemoved(const dive *dive) const; // Dive was removed; update count accordingly
private:
DiveFilter();
bool showDive(const struct dive *d) const; // Should that dive be shown?
bool setFilterStatus(struct dive *d, bool shown) const;
void updateDiveStatus(dive *d, bool newStatus, ShownChange &change) const;
QVector<dive_site *> dive_sites;
FilterData filterData;
mutable int shown_dives;
// We use ref-counting for the dive site mode. The reason is that when switching
// between two tabs that both need dive site mode, the following course of
// events may happen:
// 1) The new tab appears -> enter dive site mode.
// 2) The old tab gets its hide() signal -> exit dive site mode.
// The filter is now not in dive site mode, even if it should
int diveSiteRefCount;
};
#endif
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