fix: restore selection highlight after redraws and wire up layer dropdown

Selection highlight lost on redraw or palette switch: the three
render*() functions nulled out _selectedType/_selectedId before
rebuilding layers, and the switch*Scheme() functions called setStyle
on all layers without checking for an active selection. Fixed by
removing the null-outs and adding a highlightObject() call at the
end of each render and scheme-switch path (including inside the async
applyGeoFeatures callback in renderSegments) so the orange highlight
is reapplied immediately after every restyle.

Layer selection dropdown had no effect: initializeLayerSwitching(map)
was defined in map_layers_config.html but never called — only
initializeMapLayers(map) was invoked in object_map.html. Added the
missing call so the [data-layer] click handlers are actually attached.

Author: jirivrany

cesnet_service_path_plugin/static/cesnet_service_path_plugin/js/object_map.js

@@ -352,6 +352,7 @@
                 layer.eachLayer(sub => { if (sub.setStyle) sub.setStyle({ color }); });
             }
         });
+        if (_selectedType === 'segment') highlightObject('segment', _selectedId);
         updateLegend();
     }
 
@@ -366,6 +367,7 @@
             if (!site) return;
             marker.setStyle({ fillColor: getSiteColor(site) });
         });
+        if (_selectedType === 'site') highlightObject('site', _selectedId);
         updateLegend();
     }
 
@@ -383,6 +385,7 @@
                 layer.setStyle({ color });
             }
         });
+        if (_selectedType === 'circuit') highlightObject('circuit', _selectedId);
         updateLegend();
     }
 
@@ -848,7 +851,6 @@
     }
 
     function renderSites() {
-        if (_selectedType === 'site') { _selectedType = null; _selectedId = null; }
         siteGroup.clearLayers();
         siteLayers.clear();
 
@@ -935,6 +937,8 @@
                 });
             });
         }
+
+        if (_selectedType === 'site') highlightObject('site', _selectedId);
     }
 
     // -------------------------------------------------------------------------
@@ -1208,7 +1212,6 @@
     let cachedGeoFeatures = null;
 
     function renderSegments() {
-        if (_selectedType === 'segment') { _selectedType = null; _selectedId = null; }
         segmentPathGroup.clearLayers();
         segmentLayers.clear();
 
@@ -1241,6 +1244,7 @@
                 segmentPathGroup.addLayer(layer);
                 segmentLayers.set(feature.properties.id.toString(), layer);
             });
+            if (_selectedType === 'segment') highlightObject('segment', _selectedId);
             fitMap();
         }
 
@@ -1262,7 +1266,6 @@
     // Circuit rendering
     // -------------------------------------------------------------------------
     function renderCircuits() {
-        if (_selectedType === 'circuit') { _selectedType = null; _selectedId = null; }
         circuitGroup.clearLayers();
         circuitLayers.clear();
 
@@ -1292,6 +1295,8 @@
             circuitGroup.addLayer(line);
             circuitLayers.set(circ.id.toString(), line);
         });
+
+        if (_selectedType === 'circuit') highlightObject('circuit', _selectedId);
     }
 
     // -------------------------------------------------------------------------

cesnet_service_path_plugin/templates/cesnet_service_path_plugin/object_map.html

@@ -408,6 +408,7 @@ <h1 class="page-title mb-0">
 var _mapData = JSON.parse(document.getElementById('map-data').textContent);
 var map = L.map('map').setView([_mapData.mapCenter.lat, _mapData.mapCenter.lng], _mapData.mapCenter.zoom);
 initializeMapLayers(map);
+initializeLayerSwitching(map);
 </script>
 <script src="{% static 'cesnet_service_path_plugin/js/object_map.js' %}"></script>