“Copy attribute name” actions

[brandonkelly]

Description

Adds a “Copy attribute name” action to all native fields, similar to the “Copy field handle” action on custom fields.

Any native field layout element classes that extend craft\fieldlayoutelements\BaseField directly can include the same action via actionMenuItems() like so:

protected function actionMenuItems(?ElementInterface $element = null, bool $static = false): array
{
    $items = [];

    if (Craft::$app->getUser()->getIsAdmin()) {
        $items[] = $this->copyAttributeAction();
    }

    return $items;
}

copyAttributeAction accepts a $config argument, with the ability to override just about everything:

• id – the menu item ID
• icon – the menu item icon (clipboard by default)
• label – the menu item label (Copy attribute name by default)
• promptLabel – the copy prompt label (Attribute Name by default)
• attribute – the value to be copied (whatever attribute() returns by default)