Create a way to allow Maximize Modal

Hi, thought i'd give this a try. Please see attached patch + screenshots

Awesome job @jnlar, thank you so much

I'm marking as "Needs Works" because if we merge that today, will appear this new button in all modals of 2k+ sites

So before merging that we need 2 thinks:

1. Create an option inside of Modal CMS for Enable Modal Maximization (Default "true")
2. Create a hook_update_N(): Load all existent Modals and set Enable Modal Maximization as false

With that it won't impact the existent sites, but if they want to use they'll be able to enable that on Modal entity via CMS. Is that makes sense?

P.S. if prefer we can create a separated issues for this

Thanks @renatog,

I'm not too sure i'm following. The maximization feature is op-in and disabled by default, in ModalForm.php:

+    $enableMaximizeButton = FALSE;
+
+    if (!empty($modal->getEnableMaximizeButton())) {
+      $enableMaximizeButton = $modal->getEnableMaximizeButton();
+    }

Pre-existing/new modals will need to check 'Enable Maximize Button' and then save the edit modal form in order to have the button display in their modal.

I think the enable_modal_header dependency is sensible as it follows the same pattern as other buttons (close button) placed in the header region.

The maximization feature is op-in and disabled by default, in ModalForm.php
Pre-existing/new modals will need to check 'Enable Maximize Button' and then save the edit modal form in order to have the button display in their modal.

That's perfect!
With that solution it won't impact the existent sites but the feature will be available and we'll let them know on release notes

I think the enable_modal_header dependency is sensible as it follows the same pattern as other buttons (close button) placed in the header region.

Agreed!
Since this button is located on Modal Header I think makes sense to include there

awesome :^) I've created an issue fork & MR, thanks @renatog

Woow, thank you so much for this amazing contribution @jnlar

On my first look in the MR, seems good

I'm moving to "Needs Review" just to manual tests