Persist map flags and toggle selected parcels

wwwroot/js/lme-map.js

@@ -26,6 +26,7 @@ const lmeState = {
     lastAccuracy: 0,
     gpsTrail: null,
     selectedParcelsLayer: null,
+    selectedParcelsVisible: true,
     gpsParcelLayer: null,
     gpsTrailEnabled: false,
     gpsTrailPoints: [],
@@ -50,6 +51,7 @@ window.lmeMap = {
     exportCadastreView,
     closeCadastrePreview,
     clearSelectedParcels,
+    setSelectedParcelsVisible,
     clearMapElements,
     fitImported,
     clearImported,
@@ -1701,6 +1703,7 @@ function captureDisplayOptions() {
         showDrawingMeasurements: lmeState.showDrawingMeasurements,
         drawToolsVisible: Boolean(lmeState.drawControl),
         gpsPositionVisible: lmeState.gpsPositionVisible,
+        selectedParcelsVisible: lmeState.selectedParcelsVisible,
         trailEnabled: lmeState.gpsTrailEnabled
     };
 }
@@ -1733,6 +1736,7 @@ function applyProjectDisplayOptions(options) {
         setBaseLayer(options.baseLayer);
     }
     setGpsPositionVisible(options.gpsPositionVisible !== false);
+    setSelectedParcelsVisible(options.selectedParcelsVisible !== false);
     toggleTrail(Boolean(options.trailEnabled));
     setDrawToolsVisible(Boolean(options.drawToolsVisible));
 }
@@ -2066,6 +2070,30 @@ function clearSelectedParcels() {
     setInfo(count ? `${count} particelle selezionate rimosse.` : "Non ci sono particelle selezionate da rimuovere.");
 }
 
+function setSelectedParcelsVisible(enabled) {
+    lmeState.selectedParcelsVisible = Boolean(enabled);
+    if (!lmeState.map || !lmeState.selectedParcelsLayer) {
+        return;
+    }
+
+    if (lmeState.selectedParcelsVisible) {
+        if (!lmeState.map.hasLayer(lmeState.selectedParcelsLayer)) {
+            lmeState.selectedParcelsLayer.addTo(lmeState.map);
+        }
+        lmeState.selectedParcelsLayer.bringToFront();
+        const count = lmeState.selectedParcelsLayer.toGeoJSON().features?.length || 0;
+        setInfo(count
+            ? `${count} particelle selezionate visibili.`
+            : "Nessuna particella selezionata da mostrare.");
+        return;
+    }
+
+    if (lmeState.map.hasLayer(lmeState.selectedParcelsLayer)) {
+        lmeState.map.removeLayer(lmeState.selectedParcelsLayer);
+    }
+    setInfo("Particelle selezionate nascoste; i dati restano nel progetto.");
+}
+
 function clearMapElements() {
     const count = lmeState.selectedParcelsLayer.getLayers().length
         + lmeState.gpsParcelLayer.getLayers().length