Add ability to sort widgets

[underdpt]

Hello,

This PR adds the ability to sort widgets, similar how you can sort the right menu options.

It's backwards compatible, so it won't break or change ordering of existing widgets if no order is set.

[danharrin]

Hey, please move the sorting logic to FilamentManager so that plugin-registered widgets are also sorted.

Also, add the $sort attribute to the base Widget class, not the stub.

[underdpt]

Hello,

I've just taken a look into this, and I'm not sure which way is preferable, on FilamentManager, having in mind that

• $widgets is a public property, so it should be ordered by default in case someone is using it directly
• Being $widgets a public property, it can be modified by the developer, so the order would be lost

So the two options are:

• Order $widgets when calling registerWidget(). This would be less performant, and would ignore those two points before
• Order the widgets when calling getWidgets(). This is only called one time, so it should be more perfomant. The widgets would be ordered also in case the developer tinkers with $widgets property, but not if he uses that property directly.

I think the second one is better, what do you think?

[danharrin]

Hi,

Yeah, exactly. I was hinting at using getWidgets() to process sorting.

[underdpt]

Done.

I'm using a intermediate collection because it will allow for cleaner code when adding #746 to the same method.

[danharrin]

Thanks!