improving moving around locations

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/stock/Index.svelte

@@ -34,10 +34,14 @@
         });
         if (res.ok){
             yikes();
+            unlistLocation(loc);
+        } else error(res);
+    }
+
+    function unlistLocation(loc){
         for (var owner of top_level){
             if (owner.locations && dropNestedLocation(owner.locations,loc)) break;
         }
-        } else error(res);
     }
 
     function drag_item(item){
@@ -72,11 +76,7 @@
         if (res.ok){
             yikes();
             location        = new_loc;
-            if (!draggedItem){
-                for (var owner of top_level){
-                    if (owner.locations && dropNestedLocation(owner.locations,draggedLocation)) break;
-                }
-            }
+            if (!draggedItem) unlistLocation(draggedLocation);
             draggedItem     = null;
             draggedLocation = null;
         } else {
@@ -124,6 +124,18 @@
         loadProperties();
     }
 
+    function moveToTop(loc){
+        if (patchLocation(location,'parent_location_id',0)){
+            loc.parent_location_id = 0;
+            for (var owner of top_level){
+                if (owner.locations && dropNestedLocation(owner.locations,loc)) {
+                    owner.locations.push(loc);
+                    break;
+                };
+            }
+        }
+    }
+
     async function patchLocation(location,field,newValue){
         const data = {};
         data[field] = newValue;
@@ -172,7 +184,7 @@
             <LineEditor editable={true} bind:value={location.name} type="span" onSet={newName => patchLocation(location,'name',newName)} />
             <button class="symbol" title={t('delete_object',{object:t('location')})} onclick={e => deleteLocation(location)}></button>
             {#if location.parent_location_id}
-            <button class="symbol" title={t('move_to_top')} onclick={e => patchLocation(location,'parent_location_id',0)}></button>
+            <button class="symbol" title={t('move_to_top')} onclick={e => moveToTop(location)}></button>
             {/if}
         </h3>
         <MarkdownEditor editable={true} value={location.description} type="div" onSet={newDesc => patchLocation(location,'description',newDesc)} />

stock/src/main/java/de/srsoftware/umbrella/stock/StockModule.java

@@ -250,9 +250,11 @@ public class StockModule extends BaseHandler implements StockService {
 		if (json.has(PARENT_LOCATION_ID) && json.get(PARENT_LOCATION_ID) instanceof Number parentId){
 			if (parentId.longValue() != 0L) {
 				var target = stockDb.loadLocation(parentId.longValue());
+				if (target.id() == location.id()) throw forbidden("Location must not be it`s own parent!");
 				var targetOwner = target.owner().resolve();
 				if (!assigned(targetOwner, user)) throw forbidden("You are not allowed to edit \"{0}\"!", target.name());
 				if (!targetOwner.equals(owner))   throw unprocessable("You may not move locations from one owner ({0}) to another ({1})", owner, targetOwner);
+				LOG.log(WARNING,"Not checking, if location is moved to on of its own children!");
 			}
 		}