Filter: break out showDive() function from filterAcceptsRow()

To make dive-filtering accessible from other parts of the code,
break out the actual dive-filtering code into a function that
takes a pointer-to-dive instead of QModelIndex.

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

qt-models/filtermodels.cpp

@@ -367,21 +367,46 @@ MultiFilterSortModel::MultiFilterSortModel(QObject *parent) : QSortFilterProxyMo
 {
 }
 
+bool MultiFilterSortModel::showDive(const struct dive *d) const
+{
+	if (curr_dive_site) {
+		dive_site *ds = get_dive_site_by_uuid(d->dive_site_uuid);
+		if (!ds)
+			return false;
+		return same_string(ds->name, curr_dive_site->name) || ds->uuid == curr_dive_site->uuid;
+	}
+
+	if (justCleared || models.isEmpty())
+		return true;
+
+	for (const FilterModelBase *model: models) {
+		if (!model->doFilter(d))
+			return false;
+	}
+
+	return true;
+}
+
 bool MultiFilterSortModel::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
 {
-	bool shouldShow = true;
 	QModelIndex index0 = sourceModel()->index(source_row, 0, source_parent);
 	QVariant diveVariant = sourceModel()->data(index0, DiveTripModel::DIVE_ROLE);
 	struct dive *d = (struct dive *)diveVariant.value<void *>();
 
+	if (d) {
+		// Current row is a dive
+		bool show = showDive(d);
+		filter_dive(d, show);
+		return show;
+	}
+
+	// From here on, the current row is a trip
 	if (curr_dive_site) {
-		struct dive_site *ds = NULL;
-		if (!d) { // It's a trip, only show the ones that have dives to be shown.
 		bool showTrip = false;
 		for (int i = 0; i < sourceModel()->rowCount(index0); i++) {
 			QModelIndex child = sourceModel()->index(i, 0, index0);
 			d = (struct dive *)sourceModel()->data(child, DiveTripModel::DIVE_ROLE).value<void *>();
-				ds = get_dive_site_by_uuid(d->dive_site_uuid);
+			dive_site *ds = get_dive_site_by_uuid(d->dive_site_uuid);
 			if (!ds)
 				continue;
 			if (same_string(ds->name, curr_dive_site->name) || ds->uuid == curr_dive_site->uuid) {
@@ -394,16 +419,10 @@ bool MultiFilterSortModel::filterAcceptsRow(int source_row, const QModelIndex &s
 		}
 		return showTrip;
 	}
-		ds = get_dive_site_by_uuid(d->dive_site_uuid);
-		if (!ds)
-			return false;
-		return same_string(ds->name, curr_dive_site->name) || ds->uuid == curr_dive_site->uuid;
-	}
 
 	if (justCleared || models.isEmpty())
 		return true;
 
-	if (!d) { // It's a trip, only show the ones that have dives to be shown.
 	bool showTrip = false;
 	for (int i = 0; i < sourceModel()->rowCount(index0); i++) {
 		if (filterAcceptsRow(i, index0))
@@ -411,14 +430,6 @@ bool MultiFilterSortModel::filterAcceptsRow(int source_row, const QModelIndex &s
 	}
 	return showTrip;
 }
-	Q_FOREACH (FilterModelBase *model, models) {
-		if (!model->doFilter(d))
-			shouldShow = false;
-	}
-
-	filter_dive(d, shouldShow);
-	return shouldShow;
-}
 
 void MultiFilterSortModel::myInvalidate()
 {

qt-models/filtermodels.h

@@ -97,6 +97,7 @@ public:
 	bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const;
 	void addFilterModel(FilterModelBase *model);
 	void removeFilterModel(FilterModelBase *model);
+	bool showDive(const struct dive *d) const;
 	int divesDisplayed;
 public
 slots: