Map: move calculation of list from map-helper to map-model

The map model keeps track of the dive site positions on the
map. Therefore, it seems more logical to have the code calculating
the map position in the model, not in the helper-class.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

map-widget/qmlmapwidgethelper.cpp

@@ -8,11 +8,7 @@
 #include "core/divesite.h"
 #include "core/qthelper.h"
 #include "qt-models/maplocationmodel.h"
-#ifndef SUBSURFACE_MOBILE
-#include "qt-models/filtermodels.h"
-#endif
 
-#define MIN_DISTANCE_BETWEEN_DIVE_SITES_M 50.0
 #define SMALL_CIRCLE_RADIUS_PX            26.0
 
 MapWidgetHelper::MapWidgetHelper(QObject *parent) : QObject(parent)
@@ -108,49 +104,7 @@ void MapWidgetHelper::centerOnSelectedDiveSite()
 
 void MapWidgetHelper::reloadMapLocations()
 {
-	int idx;
-	struct dive *dive;
-	QMap<QString, MapLocation *> locationNameMap;
-	m_mapLocationModel->clear();
-	MapLocation *location;
-	QVector<MapLocation *> locationList;
-	QVector<struct dive_site *> locations;
-	qreal latitude, longitude;
-
-#ifdef SUBSURFACE_MOBILE
-	bool diveSiteMode = false;
-#else
-	// In dive site mode (that is when either editing a dive site or on
-	// the dive site tab), we want to show all dive sites, not only those
-	// of the non-hidden dives.
-	bool diveSiteMode = MultiFilterSortModel::instance()->diveSiteMode();
-#endif
-	for_each_dive(idx, dive) {
-		// Don't show dive sites of hidden dives, unless this is the currently
-		// displayed (edited) dive or we're in dive site edit mode.
-		if (!diveSiteMode && dive->hidden_by_filter && dive != current_dive)
-			continue;
-		struct dive_site *ds = get_dive_site_for_dive(dive);
-		if (!dive_site_has_gps_location(ds) || locations.contains(ds))
-			continue;
-		latitude = ds->location.lat.udeg * 0.000001;
-		longitude = ds->location.lon.udeg * 0.000001;
-		QGeoCoordinate dsCoord(latitude, longitude);
-		QString name(ds->name);
-		// don't add dive locations with the same name, unless they are
-		// at least MIN_DISTANCE_BETWEEN_DIVE_SITES_M apart
-		if (locationNameMap.contains(name)) {
-			MapLocation *existingLocation = locationNameMap[name];
-			QGeoCoordinate coord = existingLocation->coordinate();
-			if (dsCoord.distanceTo(coord) < MIN_DISTANCE_BETWEEN_DIVE_SITES_M)
-				continue;
-		}
-		location = new MapLocation(ds, dsCoord, name);
-		locationList.append(location);
-		locations.append(ds);
-		locationNameMap[name] = location;
-	}
-	m_mapLocationModel->addList(locationList);
+	m_mapLocationModel->reload();
 }
 
 void MapWidgetHelper::selectedLocationChanged(MapLocation *location)

qt-models/maplocationmodel.cpp

@@ -2,11 +2,16 @@
 #include <QDebug>
 #include "maplocationmodel.h"
 #include "core/divesite.h"
+#ifndef SUBSURFACE_MOBILE
+#include "qt-models/filtermodels.h"
+#endif
 
 const char *MapLocation::PROPERTY_NAME_COORDINATE = "coordinate";
 const char *MapLocation::PROPERTY_NAME_DIVESITE   = "divesite";
 const char *MapLocation::PROPERTY_NAME_NAME       = "name";
 
+#define MIN_DISTANCE_BETWEEN_DIVE_SITES_M 50.0
+
 MapLocation::MapLocation() : m_ds(nullptr)
 {
 }
@@ -66,7 +71,7 @@ MapLocationModel::MapLocationModel(QObject *parent) : QAbstractListModel(parent)
 
 MapLocationModel::~MapLocationModel()
 {
-	clear();
+	qDeleteAll(m_mapLocations);
 }
 
 QVariant MapLocationModel::data(const QModelIndex & index, int role) const
@@ -106,23 +111,56 @@ void MapLocationModel::add(MapLocation *location)
 	endInsertRows();
 }
 
-void MapLocationModel::addList(QVector<MapLocation *> list)
+void MapLocationModel::reload()
 {
-	if (!list.size())
-		return;
-	beginInsertRows(QModelIndex(), m_mapLocations.size(), m_mapLocations.size() + list.size() - 1);
-	m_mapLocations.append(list);
-	endInsertRows();
-}
+	int idx;
+	struct dive *dive;
+
+	beginResetModel();
 
-void MapLocationModel::clear()
-{
-	if (!m_mapLocations.size())
-		return;
-	beginRemoveRows(QModelIndex(), 0, m_mapLocations.size() - 1);
 	qDeleteAll(m_mapLocations);
 	m_mapLocations.clear();
-	endRemoveRows();
+
+	QMap<QString, MapLocation *> locationNameMap;
+	MapLocation *location;
+	QVector<struct dive_site *> locations;
+	qreal latitude, longitude;
+
+#ifdef SUBSURFACE_MOBILE
+	bool diveSiteMode = false;
+#else
+	// In dive site mode (that is when either editing a dive site or on
+	// the dive site tab), we want to show all dive sites, not only those
+	// of the non-hidden dives.
+	bool diveSiteMode = MultiFilterSortModel::instance()->diveSiteMode();
+#endif
+	for_each_dive(idx, dive) {
+		// Don't show dive sites of hidden dives, unless this is the currently
+		// displayed (edited) dive or we're in dive site edit mode.
+		if (!diveSiteMode && dive->hidden_by_filter && dive != current_dive)
+			continue;
+		struct dive_site *ds = get_dive_site_for_dive(dive);
+		if (!dive_site_has_gps_location(ds) || locations.contains(ds))
+			continue;
+		latitude = ds->location.lat.udeg * 0.000001;
+		longitude = ds->location.lon.udeg * 0.000001;
+		QGeoCoordinate dsCoord(latitude, longitude);
+		QString name(ds->name);
+		// don't add dive locations with the same name, unless they are
+		// at least MIN_DISTANCE_BETWEEN_DIVE_SITES_M apart
+		if (locationNameMap.contains(name)) {
+			MapLocation *existingLocation = locationNameMap[name];
+			QGeoCoordinate coord = existingLocation->coordinate();
+			if (dsCoord.distanceTo(coord) < MIN_DISTANCE_BETWEEN_DIVE_SITES_M)
+				continue;
+		}
+		location = new MapLocation(ds, dsCoord, name);
+		m_mapLocations.append(location);
+		locations.append(ds);
+		locationNameMap[name] = location;
+	}
+
+	endResetModel();
 }
 
 void MapLocationModel::setSelected(struct dive_site *ds, bool fromClick)

qt-models/maplocationmodel.h

@@ -61,8 +61,7 @@ public:
 	int rowCount(const QModelIndex &parent) const override;
 	int count();
 	void add(MapLocation *);
-	void addList(QVector<MapLocation *>);
-	void clear();
+	void reload();
 	MapLocation *getMapLocation(const struct dive_site *ds);
 	void updateMapLocationCoordinates(const struct dive_site *ds, QGeoCoordinate coord);
 	Q_INVOKABLE void setSelected(struct dive_site *ds, bool fromClick = true);