--- a/svghmi/widget_dropdown.ysl2	Tue Apr 14 12:07:08 2020 +0200
+++ b/svghmi/widget_dropdown.ysl2	Tue Apr 14 17:13:12 2020 +0200
@@ -20,6 +20,7 @@
         this.menu_offset = 0;
         this.lift = 0;
         this.opened = false;
+        this.bound_inhibit_click_elsewhere = this.inhibit_click_elsewhere.bind(this);
     },
     on_selection_click: function(selection) {
         console.log("selected "+selection);
@@ -72,10 +73,17 @@
         }
         return count;
     },
+    inhibit_click_elsewhere: function(e) {
+        console.log("inhibit", e);
+        console.log(e.target.parentNode, this.text_elt);
+        if(e.target.parentNode !== this.text_elt)
+            e.stopPropagation();
+    },
     close: function(){
         this.reset_text();
         this.reset_box();
         this.element.appendChild(this.button_elt);
+        document.removeEventListener("click", this.bound_inhibit_click_elsewhere, true);
         this.opened = false;
     },
     set_complete_text: function(){
@@ -138,7 +146,8 @@
         }
         this.adjust_box_to_text();
         this.element.removeChild(this.button_elt);
-        /* TODO disable interaction with background */
+        // disable interaction with background
+        document.addEventListener("click", this.bound_inhibit_click_elsewhere, true);
         this.opened = true;
     },
     reset_text: function(){