selection: move dive selection, current dive and dc through signals

To reduce access of global variables.

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

core/selection.cpp

@@ -202,7 +202,7 @@ void setSelection(const std::vector<dive *> &selection, dive *currentDive, int c
 	auto selectedDives = setSelectionCore(selection, currentDive, currentDc);
 
 	// Send the new selection to the UI.
-	emit diveListNotifier.divesSelected(selectedDives, current_dive);
+	emit diveListNotifier.divesSelected(selectedDives, current_dive, currentDc);
 }
 
 // Set selection, but try to keep the current dive. If current dive is not in selection,

core/subsurface-qt/divelistnotifier.h

@@ -111,7 +111,8 @@ signals:
 	void tripChanged(dive_trip *trip, TripField field);
 
 	// Selection changes
-	void divesSelected(const QVector<dive *> &dives, dive *currentDive);
+	// currentDC == -1 -> keep current dive computer
+	void divesSelected(const QVector<dive *> &dives, dive *currentDive, int currentDC);
 	void tripSelected(dive_trip *trip, dive *currentDive);
 
 	// Dive site signals. Add and delete events are sent per dive site and

desktop-widgets/divelistview.cpp

@@ -225,7 +225,7 @@ void DiveListView::reset()
 }
 
 // If items were selected, inform the selection model
-void DiveListView::diveSelectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive)
+void DiveListView::diveSelectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive, int currentDC)
 {
 	// This is the entry point for programmatical selection changes.
 	// Set a flag so that selection changes are not further processed,
@@ -258,7 +258,14 @@ void DiveListView::diveSelectionChanged(const QVector<QModelIndex> &indices, QMo
 	}
 	setAnimated(oldAnimated);
 
-	selectionChangeDone();
+	// This is truly sad, but taking the list of selected indices and turning them
+	// into dives turned out to be unreasonably slow. Therefore, let's access
+	// the core list directly.
+	std::vector<dive *> selected = getDiveSelection();
+	selectDiveSitesOnMap(selected);
+	struct dive *current = currentDive.data(DiveTripModelBase::DIVE_ROLE).value<struct dive *>();
+	emit divesSelected(selected, current, currentDC);
+
 	programmaticalSelectionChange = false;
 
 	// Set the currently activated row.
@@ -305,7 +312,14 @@ void DiveListView::tripSelected(QModelIndex trip, QModelIndex currentDive)
 	// funny side-effects).
 	selectionModel()->setCurrentIndex(currentDive, QItemSelectionModel::Current);
 
-	selectionChangeDone();
+	// This is truly sad, but taking the list of selected indices and turning them
+	// into dives turned out to be unreasonably slow. Therefore, let's access
+	// the core list directly.
+	std::vector<dive *> selection = getDiveSelection();
+	selectDiveSitesOnMap(selection);
+	struct dive *current = currentDive.data(DiveTripModelBase::DIVE_ROLE).value<struct dive *>();
+	emit divesSelected(selection, current, -1);
+
 	programmaticalSelectionChange = false;
 }
 
@@ -415,7 +429,7 @@ void DiveListView::currentChanged(const QModelIndex &current, const QModelIndex&
 	scrollTo(current);
 }
 
-void DiveListView::selectionChangeDone()
+void DiveListView::selectDiveSitesOnMap(const std::vector<dive *> &dives)
 {
 #ifdef MAP_SUPPORT
 	// When receiving the divesSelected signal the main window will
@@ -425,21 +439,15 @@ void DiveListView::selectionChangeDone()
 	// the dive-site selection is controlled by the filter not
 	// by the selected dives.
 	if (!DiveFilter::instance()->diveSiteMode()) {
-		// This is truly sad, but taking the list of selected indices and turning them
-		// into dive sites turned out to be unreasonably slow. Therefore, let's access
-		// the core list directly. In my tests, this went down from 700 to 0 ms!
 		QVector<dive_site *> selectedSites;
-		selectedSites.reserve(amount_selected);
-		int i;
-		dive *d;
-		for_each_dive(i, d) {
-			if (d->selected && !d->hidden_by_filter && d->dive_site && !selectedSites.contains(d->dive_site))
+		selectedSites.reserve(dives.size());
+		for (dive *d: dives) {
+			if (!d->hidden_by_filter && d->dive_site && !selectedSites.contains(d->dive_site))
 				selectedSites.push_back(d->dive_site);
 		}
 		MapWidget::instance()->setSelected(selectedSites);
 	}
 #endif
-	emit divesSelected();
 }
 
 void DiveListView::selectTripItems(QModelIndex index)
@@ -524,7 +532,8 @@ void DiveListView::selectionChanged(const QItemSelection &selected, const QItemS
 	// Display the new, processed, selection
 	QTreeView::selectionChanged(selectionModel()->selection(), newDeselected);
 
-	selectionChangeDone();
+	selectDiveSitesOnMap(selection);
+	emit divesSelected(selection, newCurrent, -1);
 
 	programmaticalSelectionChange = false;
 }

desktop-widgets/divelistview.h

@@ -29,7 +29,8 @@ public:
 	void loadImages();
 	void loadWebImages();
 signals:
-	void divesSelected();
+	// currentDC = -1: don't change dc number.
+	void divesSelected(const std::vector<dive *> &dives, dive *currentDive, int currentDC);
 public
 slots:
 	void settingsChanged();
@@ -51,13 +52,13 @@ slots:
 	void renumberDives();
 	void addDivesToTrip();
 	void shiftTimes();
-	void diveSelectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive);
+	void diveSelectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive, int currentDC);
 	void tripSelected(QModelIndex trip, QModelIndex currentDive);
 private:
 	void rowsInserted(const QModelIndex &parent, int start, int end) override;
 	void reset() override;
 	void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected) override;
-	void selectionChangeDone();
+	void selectDiveSitesOnMap(const std::vector<dive *> &dives);
 	void selectTripItems(QModelIndex index);
 	DiveTripModelBase::Layout currentLayout;
 	QModelIndex contextMenuIndex;

desktop-widgets/mainwindow.cpp

@@ -176,7 +176,7 @@ MainWindow::MainWindow() :
 	if (!QIcon::hasThemeIcon("window-close")) {
 		QIcon::setThemeName("subsurface");
 	}
-	connect(diveList.get(), &DiveListView::divesSelected, this, &MainWindow::selectionChanged);
+	connect(diveList.get(), &DiveListView::divesSelected, this, &MainWindow::divesSelected);
 	connect(&diveListNotifier, &DiveListNotifier::settingsChanged, this, &MainWindow::readSettings);
 	for (int i = 0; i < NUM_RECENT_FILES; i++) {
 		actionsRecent[i] = new QAction(this);
@@ -331,10 +331,10 @@ void MainWindow::updateAutogroup()
 	ui.actionAutoGroup->setChecked(divelog.autogroup);
 }
 
-void MainWindow::selectionChanged()
+void MainWindow::divesSelected(const std::vector<dive *> &selection, dive *currentDive, int currentDC)
 {
 	mainTab->updateDiveInfo();
-	if (current_dive)
+	if (currentDive)
 		enableDisableOtherDCsActions();
 	profile->plotCurrentDive();
 #ifdef MAP_SUPPORT

desktop-widgets/mainwindow.h

@@ -129,7 +129,7 @@ slots:
 	void on_actionReplanDive_triggered();
 	void on_action_Check_for_Updates_triggered();
 
-	void selectionChanged();
+	void divesSelected(const std::vector<dive *> &selection, dive *currentDive, int currentDC);
 	void initialUiSetup();
 
 	void on_actionImportDiveLog_triggered();

qt-models/divetripmodel.cpp

@@ -1370,7 +1370,7 @@ QModelIndex DiveTripModelTree::diveToIdx(const dive *d) const
 	}
 }
 
-void DiveTripModelTree::divesSelected(const QVector<dive *> &divesIn, dive *currentDive)
+void DiveTripModelTree::divesSelected(const QVector<dive *> &divesIn, dive *currentDive, int currentDC)
 {
 	QVector <dive *> dives = visibleDives(divesIn);
 
@@ -1382,7 +1382,7 @@ void DiveTripModelTree::divesSelected(const QVector<dive *> &divesIn, dive *curr
 	processByTrip(dives, [this, &indices] (dive_trip *trip, const QVector<dive *> &divesInTrip)
 		      { divesSelectedTrip(trip, divesInTrip, indices); });
 
-	emit selectionChanged(indices, diveToIdx(currentDive));
+	emit selectionChanged(indices, diveToIdx(currentDive), currentDC);
 
 	// The current dive has changed. Transform the current dive into an index and pass it on to the view.
 	currentChanged(currentDive);
@@ -1659,7 +1659,7 @@ QModelIndex DiveTripModelList::diveToIdx(const dive *d) const
 	return createIndex(it - items.begin(), 0);
 }
 
-void DiveTripModelList::divesSelected(const QVector<dive *> &divesIn, dive *currentDive)
+void DiveTripModelList::divesSelected(const QVector<dive *> &divesIn, dive *currentDive, int currentDC)
 {
 	QVector<dive *> dives = visibleDives(divesIn);
 
@@ -1679,7 +1679,7 @@ void DiveTripModelList::divesSelected(const QVector<dive *> &divesIn, dive *curr
 		indices.append(createIndex(j, 0, noParent));
 	}
 
-	emit selectionChanged(indices, diveToIdx(currentDive));
+	emit selectionChanged(indices, diveToIdx(currentDive), currentDC);
 
 	// The current dive has changed. Transform the current dive into an index and pass it on to the view.
 	currentChanged(currentDive);
@@ -1697,7 +1697,7 @@ void DiveTripModelList::tripSelected(dive_trip *trip, dive *currentDive)
 	for (int i = 0; i < trip->dives.nr; ++i)
 		dives.push_back(trip->dives.dives[i]);
 
-	divesSelected(dives, currentDive);
+	divesSelected(dives, currentDive, -1);
 }
 
 // Simple sorting helper for sorting against a criterium and if

qt-models/divetripmodel.h

@@ -78,13 +78,13 @@ protected slots:
 	void reset();
 signals:
 	// The propagation of selection changes is complex.
-	// The control flow of dive-selection goes:
+	// The control flow of programmatical dive-selection goes:
 	// Commands/DiveListNotifier ---(dive */dive_trip *)---> DiveTripModel ---(QModelIndex)---> DiveListView
 	// i.e. The command objects send changes in terms of pointer-to-dives, which the DiveTripModel transforms
 	// into QModelIndexes according to the current view (tree/list). Finally, the DiveListView transforms these
 	// indices into local indices according to current sorting/filtering and instructs the QSelectionModel to
 	// perform the appropriate actions.
-	void selectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive);
+	void selectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive, int currentDC);
 	void tripSelected(QModelIndex trip, QModelIndex currentDive);
 protected:
 	dive *oldCurrent;
@@ -116,7 +116,7 @@ public slots:
 	void divesChanged(const QVector<dive *> &dives);
 	void diveChanged(dive *d);
 	void divesTimeChanged(timestamp_t delta, const QVector<dive *> &dives);
-	void divesSelected(const QVector<dive *> &dives, dive *currentDive);
+	void divesSelected(const QVector<dive *> &dives, dive *currentDive, int currentDC);
 	void tripSelected(dive_trip *trip, dive *currentDive);
 	void tripChanged(dive_trip *trip, TripField);
 	void filterReset();
@@ -195,7 +195,7 @@ public slots:
 	void divesTimeChanged(timestamp_t delta, const QVector<dive *> &dives);
 	// Does nothing in list view.
 	//void divesMovedBetweenTrips(dive_trip *from, dive_trip *to, bool deleteFrom, bool createTo, const QVector<dive *> &dives);
-	void divesSelected(const QVector<dive *> &dives, dive *currentDive);
+	void divesSelected(const QVector<dive *> &dives, dive *currentDive, int currentDC);
 	void tripSelected(dive_trip *trip, dive *currentDive);
 	void filterReset();
 

qt-models/filtermodels.cpp

@@ -33,7 +33,7 @@ void MultiFilterSortModel::resetModel(DiveTripModelBase::Layout layout)
 }
 
 // Translate selection into local indices and re-emit signal
-void MultiFilterSortModel::selectionChangedSlot(const QVector<QModelIndex> &indices, QModelIndex currentDive)
+void MultiFilterSortModel::selectionChangedSlot(const QVector<QModelIndex> &indices, QModelIndex currentDive, int currentDC)
 {
 	QVector<QModelIndex> indicesLocal;
 	indicesLocal.reserve(indices.size());
@@ -43,7 +43,7 @@ void MultiFilterSortModel::selectionChangedSlot(const QVector<QModelIndex> &indi
 			indicesLocal.push_back(local);
 	}
 
-	emit selectionChanged(indicesLocal, mapFromSource(currentDive));
+	emit selectionChanged(indicesLocal, mapFromSource(currentDive), currentDC);
 }
 
 // Translate selection into local indices and re-emit signal

qt-models/filtermodels.h

@@ -18,10 +18,10 @@ public:
 
 	void resetModel(DiveTripModelBase::Layout layout);
 signals:
-	void selectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive);
+	void selectionChanged(const QVector<QModelIndex> &indices, QModelIndex currentDive, int currentDC);
 	void tripSelected(QModelIndex trip, QModelIndex currentDive);
 private slots:
-	void selectionChangedSlot(const QVector<QModelIndex> &indices, QModelIndex currentDive);
+	void selectionChangedSlot(const QVector<QModelIndex> &indices, QModelIndex currentDive, int currentDC);
 	void tripSelectedSlot(QModelIndex trip, QModelIndex currentDive);
 private:
 	MultiFilterSortModel(QObject *parent = 0);