on multiple superpositions can switch by clicking on superposed mapitem

src/components/layout/CartoucheLayout.vue

@@ -20,6 +20,17 @@ export default {
   computed: {
     ...mapState(ConcernementsStore,['concernementsByID', 'opened_concernement', 'ct_concernement']),
   },
+  watch: {
+    cid: {
+      handler (n,o) {
+        console.log(`TerrainDeVie watch cid o:${o}, n:${n}`);
+        if (n) {
+          this.concernement = this.concernementsByID[n];
+        }
+      },
+      deep: true
+    }
+  },
   methods: {
     ...mapActions(ConcernementsStore,['setMapMode'])
   },