Field action menus

[brandonkelly]

Description

Adds action menus to custom fields within element edit pages, with “Edit field” (if admin changes are allowed) and “Copy field handle” items:

(Both of these actions require that the current user is an admin, but the underlying support for field action menus is not admin-exclusive.)

Since all fields will now have a “Copy field handle” action, the “Show field handles in edit forms” admin user preference has been removed.

Action menus are populated from an actionMenuItems array within the config passed to craft\helpers\Cp::fieldHtml(). Field layout elements can register items via craft\fieldlayoutelements\BaseField::actionMenuItems(). And custom field types can register additional action items via their getActionMenuItems() method.

[mmikkel]

...I have some mixed feelings about this one 😅

Love to see the "Edit field" action finally added to element edit forms. I think the field actions menu is a good idea, with a lot of potential use cases.

The "Copy Field Handle" action specifically, feels like a step backwards to me though. To simply view a field's handle, devs now have to click twice to open a modal. Copying the handle requires a third click inside the modal, after moving the cursor to the center of the viewport. Compared to the inline field handles we've had for years, that feels kinda cumbersome.

If retaining the inline field handles is off the table, maybe it'd be possible to render the field handle inline in the field actions menu – without requiring additional clicks and that modal? I think that could hit the sweet spot in terms of surfacing the handles in an effective enough way, whilst still helping to streamline this stuff (i.e. "field actions").