implemented deletion of locations

frontend/src/Components/LineEditor.svelte

@@ -21,8 +21,12 @@
 
     async function applyEdit(){
         let success = await onSet(editValue);
-        if (success) value = editValue;
-        editing=false;
+        if (success) {
+            value = editValue;
+            editing=false;
+        } else {
+            editValue = value;
+        }
     }
 
     function ignore(evt){

frontend/src/routes/stock/Index.svelte

@@ -22,6 +22,32 @@
     let properties = $state(null);
     let top_level = $state(null);
 
+    async function deleteLocation(loc){
+        if (!confirm(t('confirm_delete',{element:loc.name}))) return;
+        const url = api(`stock/location/${loc.id}`);
+        const res = await fetch(url,{
+            credentials: 'include',
+            method: 'DELETE',
+        });
+        if (res.ok){
+            yikes();
+            for (var owner of top_level){
+                if (owner.locations && dropNestedLocation(owner.locations,loc)) break;
+            }
+        } else error(res);
+    }
+
+    function dropNestedLocation(locations,loc){
+        for (let [idx,entry] of locations.entries()){
+            if (entry.id == loc.id){
+                locations.splice(idx,1);
+                return true;
+            }
+            if (entry.locations && dropNestedLocation(entry.locations,loc)) return true;
+        }
+        return false;
+    }
+
     async function move_dragged_to(new_loc){
         const data = { item : draggedItem.id, target: new_loc.id };
         const url = api('stock/move_item');

frontend/src/routes/stock/Locations.svelte

@@ -39,6 +39,10 @@
         return false;
     }
 
+    function reset(){
+        new_location_name = '';
+    }
+
     async function onSet(new_location_name){
         const data = {
             name: new_location_name,
@@ -54,6 +58,8 @@
             yikes;
             const saved = await res.json();
             locations.push(saved);
+            show_location_form = false;
+            setTimeout(reset,500);
             return true;
         } else {
             error(res);
@@ -86,18 +92,6 @@
 </style>
 
 <ul>
-    <li>
-        {#if show_location_form}
-        <form {onsubmit}>
-        <LineEditor simple={true} bind:value={new_location_name} {onSet} />
-        </form>
-        {:else}
-        <a onclick={show_loc_form}>
-            <span class="symbol"></span> {t('add_object',{object:t('location')})}
-        </a>
-        {/if}
-
-    </li>
     {#each locations as location}
     <li onclick={e => toggleChildren(e, location)}
         class="{location.locations?'expanded':'collapsed'} {location.highlight?'highlight':null}"
@@ -110,5 +104,17 @@
         {/if}
     </li>
     {/each}
+    <li>
+        {#if show_location_form}
+        <form {onsubmit}>
+            <LineEditor simple={true} bind:value={new_location_name} {onSet} />
+        </form>
+        {:else}
+        <a onclick={show_loc_form}>
+            <span class="symbol"></span> {t('add_object',{object:t('location')})}
+        </a>
+        {/if}
+
+    </li>
 </ul>
-<!-- <pre>{JSON.stringify(parent,null,2)}</pre> -->
+<!-- <pre>{JSON.stringify(parent,null,2)}</pre> -->