remember open status

ccp/js/methodlistcontroller2.js

@@ -299,6 +299,21 @@ class CCPMethodList2 extends HTMLElement{
                 e.querySelector("span[name=count_executables]").textContent = executables 
               }
             },
+            {
+              target : "details",
+              apply : (e,d)=>{
+                e.alt = e.title = d
+                if(sessionStorage.getItem(d) === "open") e.open = "open";
+                else e.removeAttribute("open");
+              },
+              on_toggle : ev=>{
+                if(ev.target.open){
+                  sessionStorage.setItem(ev.currentTarget.alt, 'open')
+                }else{
+                  sessionStorage.removeItem(ev.currentTarget.alt)
+                }
+              }
+            },
             {
               target : "details ul[name=process_list]",
               in : (e,d)=>d,