subsurface/qt-models/filtermodels.h
Berthold Stoeger e0fcf99d0a Filter: reload only when checkstate changed
Currently, the filter is recalculated if a filter-entry is changed.
This also happens if the counts of a filter-entry changes. This
is to be avoided, as it causes unnecessary churn.

Therefore, send the proper role with the dataChanged() signal
and add a new slot, which invalidates only if a field with the
Qt::CheckStateRole is changed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-11 16:22:27 -07:00

144 lines
3.6 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#ifndef FILTERMODELS_H
#define FILTERMODELS_H
#include <QStringListModel>
#include <QSortFilterProxyModel>
#include <stdint.h>
#include <vector>
struct dive;
struct dive_trip;
class FilterModelBase : public QAbstractListModel {
Q_OBJECT
private:
int findInsertionIndex(const QString &name);
protected:
struct Item {
QString name;
bool checked;
int count;
};
std::vector<Item> items;
int indexOf(const QString &name) const;
void addItem(const QString &name, bool checked, int count);
int rowCount(const QModelIndex &parent = QModelIndex()) const override;
void decreaseCount(const QString &d);
void increaseCount(const QString &d);
public:
virtual bool doFilter(const dive *d) const = 0;
virtual void diveAdded(const dive *d) = 0;
virtual void diveDeleted(const dive *d) = 0;
void clearFilter();
void selectAll();
void invertSelection();
bool anyChecked;
bool negate;
public
slots:
void setNegate(bool negate);
void changeName(const QString &oldName, const QString &newName);
protected:
explicit FilterModelBase(QObject *parent = 0);
void updateList(QStringList &new_list);
virtual int countDives(const char *) const = 0;
private:
Qt::ItemFlags flags(const QModelIndex &index) const;
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
};
class TagFilterModel : public FilterModelBase {
Q_OBJECT
public:
static TagFilterModel *instance();
bool doFilter(const dive *d) const;
public
slots:
void repopulate();
private:
explicit TagFilterModel(QObject *parent = 0);
int countDives(const char *) const;
void diveAdded(const dive *d);
void diveDeleted(const dive *d);
};
class BuddyFilterModel : public FilterModelBase {
Q_OBJECT
public:
static BuddyFilterModel *instance();
bool doFilter(const dive *d) const;
public
slots:
void repopulate();
private:
explicit BuddyFilterModel(QObject *parent = 0);
int countDives(const char *) const;
void diveAdded(const dive *d);
void diveDeleted(const dive *d);
};
class LocationFilterModel : public FilterModelBase {
Q_OBJECT
public:
static LocationFilterModel *instance();
bool doFilter(const dive *d) const;
public
slots:
void repopulate();
void addName(const QString &newName);
private:
explicit LocationFilterModel(QObject *parent = 0);
int countDives(const char *) const;
void diveAdded(const dive *d);
void diveDeleted(const dive *d);
};
class SuitsFilterModel : public FilterModelBase {
Q_OBJECT
public:
static SuitsFilterModel *instance();
bool doFilter(const dive *d) const;
public
slots:
void repopulate();
private:
explicit SuitsFilterModel(QObject *parent = 0);
int countDives(const char *) const;
void diveAdded(const dive *d);
void diveDeleted(const dive *d);
};
class MultiFilterSortModel : public QSortFilterProxyModel {
Q_OBJECT
public:
static MultiFilterSortModel *instance();
bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
void addFilterModel(FilterModelBase *model);
void removeFilterModel(FilterModelBase *model);
void divesAdded(const QVector<dive *> &dives);
void divesDeleted(const QVector<dive *> &dives);
bool showDive(const struct dive *d) const;
int divesDisplayed;
public
slots:
void myInvalidate();
void clearFilter();
void startFilterDiveSite(uint32_t uuid);
void stopFilterDiveSite();
void filterChanged(const QModelIndex &from, const QModelIndex &to, const QVector<int> &roles);
signals:
void filterFinished();
private:
MultiFilterSortModel(QObject *parent = 0);
QList<FilterModelBase *> models;
struct dive_site *curr_dive_site;
};
#endif