Keep national coverage selection available

frontend/src/components/map/MapWorkspace.tsx

@@ -974,6 +974,7 @@ export function MapWorkspace({
   const onDemandThemeActive = analysisMode === 'current' && Boolean(activeOnDemandMapProduct)
   const regionalOnDemandThemeActive = regionalScopeSelected && onDemandThemeActive
   const activeThemeAvailable = Boolean(activeThemeDataset) || onDemandThemeActive
+  const coverageSelectionAvailable = analysisMode === 'current' && Boolean(selectedProjectId && selectedMapArea)
 
   useEffect(() => {
     if (
@@ -1525,7 +1526,7 @@ export function MapWorkspace({
   const analyzeSelection = async (bbox: VectorSelectionBBox, areaId?: string) => {
     setSelectionBbox(bbox)
     const tasks: Array<Promise<unknown>> = [loadAllThemeResults(bbox, areaId)]
-    if (!regionalPartitionedThemeActive && !onDemandThemeActive) {
+    if (activeThemeAvailable && !regionalPartitionedThemeActive && !onDemandThemeActive) {
       tasks.push(onRunMapSelectionExtract(bbox, areaId))
     }
     if (analysisMode === 'evolution' && earlierDatasetId && laterDatasetId) {
@@ -1914,6 +1915,8 @@ export function MapWorkspace({
                   <p>
                     {bboxSelectionMode
                       ? 'Sleep nu een rechthoek op de kaart.'
+                      : !activeThemeAvailable
+                        ? 'Teken een rechthoek om de databeschikbaarheid voor dit gebied te controleren.'
                       : regionalRasterThemeActive
                         ? 'Teken een rechthoek; de juiste gemeentelijke rasters worden automatisch gecombineerd.'
                         : onDemandThemeActive
@@ -1927,7 +1930,7 @@ export function MapWorkspace({
               <div className="geo-map-actions">
                 <button
                   className={bboxSelectionMode ? 'primary-action geo-draw-active' : 'primary-action'}
-                  disabled={!activeThemeAvailable || (analysisMode === 'evolution' && activeTemporalSeries.length < 2) || mapSelectionLoading || themeResultsLoading}
+                  disabled={(!activeThemeAvailable && !coverageSelectionAvailable) || (analysisMode === 'evolution' && activeTemporalSeries.length < 2) || mapSelectionLoading || themeResultsLoading}
                   type="button"
                   onClick={startBboxSelection}
                 >
@@ -1935,7 +1938,7 @@ export function MapWorkspace({
                 </button>
                 <button
                   className="secondary-action"
-                  disabled={!activeThemeAvailable || regionalRasterThemeActive || regionalOnDemandThemeActive || (analysisMode === 'evolution' && activeTemporalSeries.length < 2) || !selectedAreaBbox || mapSelectionLoading || themeResultsLoading}
+                  disabled={(!activeThemeAvailable && !coverageSelectionAvailable) || regionalRasterThemeActive || regionalOnDemandThemeActive || (analysisMode === 'evolution' && activeTemporalSeries.length < 2) || !selectedAreaBbox || mapSelectionLoading || themeResultsLoading}
                   type="button"
                   title={
                     regionalRasterThemeActive || regionalOnDemandThemeActive