[6.0] Fulfill InstallerScriptInterface with a trait

[bembelimen]

Summary of Changes

This implements a trait to be used in combination with the InstallerScriptInterface

Testing Instructions

I have no real idea, how to test it. You need an Extension using a install script with the InstallerScriptInterface. Using this trait should resolve the interface and give you some additional options like:

you can set

• a minimum PHP version which is required
• a minimum Joomla! version which is required
• files to be removed
• creating a dashboard menu onthefly

There are also two "custom" methods to extend preflight/postflight and still benefit from their functionality.

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org: Add new InstallerScriptTrait (PR #44381) Manual#448

• No documentation changes for manual.joomla.org needed

[laoneo]

In general I'm not sure if the trait is the right approach. I would prefer a base class.

[wilsonge]

What's the value of deprecating and forcing people to move. I mean I'm not fussed whether we use a base class or a trait to be honest - but I don't see the value of just deprecating and moving to the other one forcing code changes for next to no benefit.

[HLeithner]

I miss an interface for this trait and I would replace the string type with an enum.

I think the goal is to get type safety with out b/c break.

[laoneo]

The interface exists already, but I couldn't change the InstallerClass without braking bc at the time I made it.

[HLeithner]

This pull request has been automatically rebased to 6.0-dev.

[HLeithner]

I made some annotations maybe can comment on them.

Fixed application + client

[brianteeman]

Shouldn't there be the option to set dB requirements

[softforge]

Shouldn't there be the option to set dB requirements

It's not in the original, but it would be a nice improvement

[softforge]

Thank you for the work on this, and for the testers adn reviewers who pointed out some improvements that can be made