Map: reload on selection change directly

When changing the dive selection, we have to reload the map to show
the correctly highlighted flags. Do this directly by hooking into
the DiveListNotifier::divesChanged signal instead of indirectly
via the MainTab.

Moreover, on reload center on the highlighted dive sites.

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

desktop-widgets/mainwindow.cpp

@@ -216,7 +216,6 @@ MainWindow::MainWindow() : QMainWindow(),
 	connect(DivePlannerPointsModel::instance(), SIGNAL(planCanceled()), this, SLOT(planCanceled()));
 	connect(DivePlannerPointsModel::instance(), SIGNAL(variationsComputed(QString)), this, SLOT(updateVariations(QString)));
 	connect(plannerDetails->printPlan(), SIGNAL(pressed()), divePlannerWidget, SLOT(printDecoPlan()));
-	connect(mainTab.get(), &MainTab::diveSiteChanged, mapWidget, &MapWidget::centerOnSelectedDiveSite);
 	connect(this, &MainWindow::showError, ui.mainErrorMessage, &NotificationWidget::showError, Qt::AutoConnection);
 
 	connect(&windowTitleUpdate, &WindowTitleUpdate::updateTitle, this, &MainWindow::setAutomaticTitle);

desktop-widgets/mapwidget.cpp

@@ -6,7 +6,6 @@
 
 #include "mapwidget.h"
 #include "core/divesite.h"
-#include "core/subsurface-qt/DiveListNotifier.h"
 #include "map-widget/qmlmapwidgethelper.h"
 #include "qt-models/maplocationmodel.h"
 #include "qt-models/divelocationmodel.h"
@@ -31,6 +30,7 @@ MapWidget::MapWidget(QWidget *parent) : QQuickWidget(parent)
 	setResizeMode(QQuickWidget::SizeRootObjectToView);
 	connect(this, &QQuickWidget::statusChanged, this, &MapWidget::doneLoading);
 	connect(&diveListNotifier, &DiveListNotifier::diveSiteChanged, this, &MapWidget::diveSiteChanged);
+	connect(&diveListNotifier, &DiveListNotifier::divesChanged, this, &MapWidget::divesChanged);
 	setSource(urlMapWidget);
 }
 
@@ -85,8 +85,10 @@ void MapWidget::repopulateLabels()
 void MapWidget::reload()
 {
 	CHECK_IS_READY_RETURN_VOID();
-	if (!skipReload)
+	if (!skipReload) {
 		m_mapHelper->reloadMapLocations();
+		centerOnSelectedDiveSite();
+	}
 }
 
 void MapWidget::endGetDiveCoordinates()
@@ -129,6 +131,12 @@ void MapWidget::diveSiteChanged(struct dive_site *ds, int field)
 		m_mapHelper->updateDiveSiteCoordinates(ds, ds->location);
 }
 
+void MapWidget::divesChanged(dive_trip *, const QVector<dive *> &, DiveField field)
+{
+	if (field == DiveField::DIVESITE)
+		reload();
+}
+
 MapWidget::~MapWidget()
 {
 	m_instance = NULL;

desktop-widgets/mapwidget.h

@@ -3,6 +3,7 @@
 #define MAPWIDGET_H
 
 #include "core/units.h"
+#include "core/subsurface-qt/DiveListNotifier.h"
 #include <QQuickWidget>
 #include <QList>
 
@@ -11,7 +12,6 @@
 class QResizeEvent;
 class QQuickItem;
 class MapWidgetHelper;
-struct dive_site;
 
 class MapWidget : public QQuickWidget {
 
@@ -35,6 +35,7 @@ public slots:
 	void coordinatesChanged(struct dive_site *ds, const location_t &);
 	void doneLoading(QQuickWidget::Status status);
 	void diveSiteChanged(struct dive_site *ds, int field);
+	void divesChanged(dive_trip *, const QVector<dive *> &, DiveField field);
 
 private:
 	static MapWidget *m_instance;

desktop-widgets/tab-widgets/maintab.cpp

@@ -310,11 +310,6 @@ void MainTab::divesChanged(dive_trip *trip, const QVector<dive *> &dives, DiveFi
 		break;
 	case DiveField::DIVESITE:
 		updateDiveSite(current_dive);
-		// Since we only show dive sites with a dive, a new dive site may have appeared or an old one disappeared.
-		// Therefore reload the map widget.
-		// TODO: Call this only if a site *actually* went from usage count 0 to 1 or 1 to 0.
-		MapWidget::instance()->repopulateLabels();
-		emit diveSiteChanged();
 		break;
 	case DiveField::TAGS:
 		ui.tagWidget->setText(get_taglist_string(current_dive->tag_list));
@@ -593,7 +588,6 @@ void MainTab::updateDiveInfo()
 
 	if (verbose && current_dive && current_dive->dive_site)
 		qDebug() << "Set the current dive site:" << current_dive->dive_site->uuid;
-	emit diveSiteChanged();
 }
 
 void MainTab::reload()

desktop-widgets/tab-widgets/maintab.h

@@ -44,8 +44,6 @@ public:
 	void nextInputField(QKeyEvent *event);
 	void stealFocus();
 
-signals:
-	void diveSiteChanged();
 public
 slots:
 	void divesChanged(dive_trip *trip, const QVector<dive *> &dives, DiveField field);