mobile/divelist: add first version of new MobileListModel proxy model

Create a model which represents all top-level items and, potentially, one
expanded trip as a flat list.

Pass down roles to the source model and let the source model handle that. We'll
have to do some ifdef-ery, but so be it.

Additionally, compile the base model on mobile as well.
This contains a couple of hacks to make things compile at all.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 94 insertions, 0 deletions

diff --git a/qt-models/mobilelistmodel.h b/qt-models/mobilelistmodel.h
new file mode 100644
index 000000000..92a12960d
--- /dev/null
+++ b/qt-models/mobilelistmodel.h
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef MOBILELISTMODEL_H
+#define MOBILELISTMODEL_H
+
+#include "divetripmodel.h"
+
+class MobileListModel : public QAbstractItemModel {
+	Q_OBJECT
+public:
+	enum Roles {
+		IsTopLevelRole = DiveTripModelBase::LAST_ROLE + 1,
+		DiveDateRole,
+		TripIdRole,
+		TripNrDivesRole,
+		DateTimeRole,
+		IdRole,
+		NumberRole,
+		LocationRole,
+		DepthRole,
+		DurationRole,
+		DepthDurationRole,
+		RatingRole,
+		VizRole,
+		SuitRole,
+		AirTempRole,
+		WaterTempRole,
+		SacRole,
+		SumWeightRole,
+		DiveMasterRole,
+		BuddyRole,
+		NotesRole,
+		GpsDecimalRole,
+		GpsRole,
+		NoDiveRole,
+		DiveSiteRole,
+		CylinderRole,
+		GetCylinderRole,
+		CylinderListRole,
+		SingleWeightRole,
+		StartPressureRole,
+		EndPressureRole,
+		FirstGasRole,
+		SelectedRole,
+	};
+	MobileListModel(DiveTripModelBase *source);
+	static MobileListModel *instance();
+	void resetModel();
+	void expand(int row);
+	void unexpand();
+	void toggle(int row);
+	Q_PROPERTY(int shown READ shown NOTIFY shownChanged);
+signals:
+	void shownChanged();
+private:
+	struct IndexRange {
+		bool visible;
+		int first, last;
+	};
+	void connectSignals();
+	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;
+	QModelIndex index(int row, int column, const QModelIndex &parent) const override;
+	QModelIndex parent(const QModelIndex &index) const override;
+	int rowCount(const QModelIndex &parent) const override;
+	int columnCount(const QModelIndex &parent) const override;
+	QHash<int, QByteArray> roleNames() const override;
+	int shown() const;
+
+	DiveTripModelBase *source;
+	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);
+};
+
+#endif