- Fixed UiSelect's selected item method

- Added a new DateTime (WIP from firefox still)

src/Form/UiSelect.php

@@ -38,7 +38,10 @@ class UiSelect extends UiElement implements Extension {
     protected function setList(array $list, $selected, bool $strict = true) : void
     {
         foreach($list as $key => $item) {
+            $isSelected = $this->isSelected($key, $selected, $strict);
+            
             if ($item instanceof UiElement) {
+               
                 $this->append($item);
                 
                 continue;
@@ -48,11 +51,11 @@ class UiSelect extends UiElement implements Extension {
                 $obj->text($key);
 
                 foreach($item as $subKey => $subItem) {
-                    $obj->append($this->createOption($subItem, $subKey, $strict ? $subKey === $selected : $subKey == $selected));
+                    $obj->append($this->createOption($subItem, $subKey, $isSelected));
                 }
             }
             else {
-                $obj = $this->createOption($item, $key, $strict ? $key === $selected : $key == $selected);
+                $obj = $this->createOption($item, $key, $isSelected);
             }
             
             $this->append($obj);
@@ -71,4 +74,16 @@ class UiSelect extends UiElement implements Extension {
         
         return $option;
     }
+    
+    protected function isSelected($check, $value, bool $strict = true) : bool
+    {        
+        if (false !== ( $f = filter_var($value, FILTER_VALIDATE_INT) ) ) {
+            $value = $f;
+        }
+        elseif (false !== ( $f = filter_var($value, FILTER_VALIDATE_FLOAT) ) ) {
+            $value = $f;
+        }
+        
+        return $strict ? $check === $value : $check == $value;
+    }
 }