(FIX) Use switch/case for polarity/onset from data, avoid int-to-enum cast

PickPolarity/PickOnset are MAKEENUM types with explicit enum constructors.
Switch/case avoids the invalid int-to-enum conversion that caused build errors.

Author: Donavin97

libs/seiscomp/gui/datamodel/pickerview.cpp

@@ -6459,15 +6459,23 @@ void PickerView::setPickPolarity() {
 		QAction *act = static_cast<QAction*>(sender());
 		if ( act ) {
 			int val = act->data().toInt();
-			if ( val == -1 ) {
-				m->setPolarity(Core::None);
-				polarityName = tr("unset");
-			}
-			else {
-				m->setPolarity(PickPolarity(val));
-				if ( val == POSITIVE ) polarityName = tr("positive (up)");
-				else if ( val == NEGATIVE ) polarityName = tr("negative (down)");
-				else polarityName = tr("undecidable");
+			switch ( val ) {
+				case DataModel::POSITIVE:
+					m->setPolarity(PickPolarity(DataModel::POSITIVE));
+					polarityName = tr("positive (up)");
+					break;
+				case DataModel::NEGATIVE:
+					m->setPolarity(PickPolarity(DataModel::NEGATIVE));
+					polarityName = tr("negative (down)");
+					break;
+				case DataModel::UNDECIDABLE:
+					m->setPolarity(PickPolarity(DataModel::UNDECIDABLE));
+					polarityName = tr("undecidable");
+					break;
+				default:
+					m->setPolarity(Core::None);
+					polarityName = tr("unset");
+					break;
 			}
 		}
 		else {
@@ -6528,15 +6536,23 @@ void PickerView::setPickOnset() {
 		QAction *act = static_cast<QAction*>(sender());
 		if ( act ) {
 			int val = act->data().toInt();
-			if ( val == -1 ) {
-				m->setPickOnset(Core::None);
-				onsetName = tr("unset");
-			}
-			else {
-				m->setPickOnset(PickOnset(val));
-				if ( val == EMERGENT ) onsetName = tr("emergent");
-				else if ( val == IMPULSIVE ) onsetName = tr("impulsive");
-				else onsetName = tr("questionable");
+			switch ( val ) {
+				case DataModel::EMERGENT:
+					m->setPickOnset(PickOnset(DataModel::EMERGENT));
+					onsetName = tr("emergent");
+					break;
+				case DataModel::IMPULSIVE:
+					m->setPickOnset(PickOnset(DataModel::IMPULSIVE));
+					onsetName = tr("impulsive");
+					break;
+				case DataModel::QUESTIONABLE:
+					m->setPickOnset(PickOnset(DataModel::QUESTIONABLE));
+					onsetName = tr("questionable");
+					break;
+				default:
+					m->setPickOnset(Core::None);
+					onsetName = tr("unset");
+					break;
 			}
 		}
 		else {