Add callbacks for search panel opening and closing

InvenTree/templates/js/translated/search.js

@@ -4,5 +4,31 @@
 */
 
 /* exported
+    closeSearchPanel,
+    openSearchPanel,
 */
 
+
+function closeSearchPanel() {
+
+    // TODO
+    
+}
+
+
+/*
+ * Callback when the search panel is opened.
+ * Ensure the panel is in a known state
+ */
+function openSearchPanel() {
+
+    var panel = $('#offcanvas-search');
+
+    // Ensure the 'no results found' element is visible
+    panel.find('#search-no-results').show();
+
+    // Finally, grab keyboard focus in the search bar
+    panel.find('#search-input').focus();
+
+}
+