add nova

nova/src/Fields/Copyable.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Laravel\Nova\Fields;
+
+use Laravel\Nova\Exceptions\HelperNotSupported;
+
+trait Copyable
+{
+    /**
+     * Indicates if the field value is copyable inside Nova.
+     *
+     * @var bool
+     */
+    public $copyable = false;
+
+    /**
+     * Allow the field to be copyable to the clipboard inside Nova.
+     *
+     * @return $this
+     *
+     * @throws \Laravel\Nova\Exceptions\HelperNotSupported
+     */
+    public function copyable()
+    {
+        if ($this->asHtml) {
+            throw new HelperNotSupported(sprintf("The `%s::%s` option is not available on fields displayed as HTML. Please remove the `asHtml` method from the {$this->name} field to enable `copyable`.",
+                __CLASS__, 'copyable'));
+        }
+
+        $this->copyable = true;
+
+        return $this;
+    }
+}