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803111ef02
The data-flow from C-core to list-view is as follows: C-core --> DiveTripModel --> MultiSortFilterModel --> DiveListView The control-flow, on the other hand, differs as DiveListView accesses both MultiSortFilterModel and DiveTripModel, whereas MultiSortFilterModel is mostly unaware of its source model. This is in principle legitimate, as the MultiSortFilterModel might be used for different sources. In our particular case, this is not so. MultiSortFilterModel is written for a particular use case. Therefore, model control-flow follow after data-flow: Let MultiSortFilterModel set its own source model and DiveListView access the MultiSortFilterModel, which then manages its source model. This is not bike-shedding, but will enable a more flexible and higher-performance sorting. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
147 lines
3.7 KiB
C++
147 lines
3.7 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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#ifndef FILTERMODELS_H
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#define FILTERMODELS_H
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#include "divetripmodel.h" // For DiveTripModel::Layout. TODO: remove in due course
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#include <QStringListModel>
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#include <QSortFilterProxyModel>
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#include <stdint.h>
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#include <vector>
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struct dive;
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struct dive_trip;
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class FilterModelBase : public QAbstractListModel {
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Q_OBJECT
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private:
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int findInsertionIndex(const QString &name);
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protected:
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struct Item {
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QString name;
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bool checked;
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int count;
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};
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std::vector<Item> items;
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int indexOf(const QString &name) const;
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void addItem(const QString &name, bool checked, int count);
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int rowCount(const QModelIndex &parent = QModelIndex()) const override;
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void decreaseCount(const QString &d);
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void increaseCount(const QString &d);
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public:
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virtual bool doFilter(const dive *d) const = 0;
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virtual void diveAdded(const dive *d) = 0;
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virtual void diveDeleted(const dive *d) = 0;
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void clearFilter();
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void selectAll();
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void invertSelection();
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bool anyChecked;
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bool negate;
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public
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slots:
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void setNegate(bool negate);
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void changeName(const QString &oldName, const QString &newName);
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protected:
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explicit FilterModelBase(QObject *parent = 0);
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void updateList(QStringList &new_list);
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virtual int countDives(const char *) const = 0;
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private:
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Qt::ItemFlags flags(const QModelIndex &index) const;
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QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
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bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
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};
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class TagFilterModel : public FilterModelBase {
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Q_OBJECT
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public:
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static TagFilterModel *instance();
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bool doFilter(const dive *d) const;
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public
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slots:
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void repopulate();
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private:
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explicit TagFilterModel(QObject *parent = 0);
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int countDives(const char *) const;
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void diveAdded(const dive *d);
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void diveDeleted(const dive *d);
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};
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class BuddyFilterModel : public FilterModelBase {
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Q_OBJECT
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public:
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static BuddyFilterModel *instance();
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bool doFilter(const dive *d) const;
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public
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slots:
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void repopulate();
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private:
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explicit BuddyFilterModel(QObject *parent = 0);
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int countDives(const char *) const;
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void diveAdded(const dive *d);
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void diveDeleted(const dive *d);
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};
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class LocationFilterModel : public FilterModelBase {
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Q_OBJECT
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public:
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static LocationFilterModel *instance();
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bool doFilter(const dive *d) const;
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public
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slots:
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void repopulate();
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void addName(const QString &newName);
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private:
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explicit LocationFilterModel(QObject *parent = 0);
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int countDives(const char *) const;
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void diveAdded(const dive *d);
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void diveDeleted(const dive *d);
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};
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class SuitsFilterModel : public FilterModelBase {
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Q_OBJECT
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public:
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static SuitsFilterModel *instance();
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bool doFilter(const dive *d) const;
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public
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slots:
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void repopulate();
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private:
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explicit SuitsFilterModel(QObject *parent = 0);
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int countDives(const char *) const;
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void diveAdded(const dive *d);
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void diveDeleted(const dive *d);
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};
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class MultiFilterSortModel : public QSortFilterProxyModel {
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Q_OBJECT
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public:
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static MultiFilterSortModel *instance();
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bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
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void addFilterModel(FilterModelBase *model);
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void removeFilterModel(FilterModelBase *model);
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void divesAdded(const QVector<dive *> &dives);
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void divesDeleted(const QVector<dive *> &dives);
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bool showDive(const struct dive *d) const;
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int divesDisplayed;
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public
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slots:
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void myInvalidate();
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void clearFilter();
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void startFilterDiveSite(struct dive_site *ds);
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void stopFilterDiveSite();
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void filterChanged(const QModelIndex &from, const QModelIndex &to, const QVector<int> &roles);
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void setLayout(DiveTripModel::Layout layout);
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signals:
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void filterFinished();
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private:
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MultiFilterSortModel(QObject *parent = 0);
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QList<FilterModelBase *> models;
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struct dive_site *curr_dive_site;
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};
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#endif
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