Add DSL for creating menu toolbar

[LVMVRQUXL]

Description

This request adds a DSL for creating the menu toolbar of the desktop application.
It is marked as draft for reviewing the requirements and the API of the DSL.

Requirements

• A menu toolbar has at least one menu.
• A menu has a label and at least one option.
• A menu label shouldn't be blank.
• A menu option can be a menu or an actionable option.
• An actionable option has a label and an action to execute on click.
• An actionable option label shouldn't be blank.

import kotools.types.NotEmptySet
import kotools.types.NotBlankString

interface MenuToolbar {
    val menus: NotEmptySet<Menu>
}

sealed interface MenuOption {
    val label: NotBlankString
}

interface Menu : MenuOption {
    val options: NotEmptySet<MenuOption>
}

interface ActionableOption : MenuOption {
    fun onClick(): Unit
}

If we already know the labels of menu options at compile-time, we should define them in sealed hierarchies (enum class or sealed interface for example).

Checklist

• Validate the requirements.
• Define the DSL without implementing the declarations.
• Implement and test the ActionableOption type.
• Implement and test the Menu type.
• Implement and test the MenuOption type.
• Implement and test the MenuToolbar type.
• Refactor code for using this new DSL.

[LVMVRQUXL]

@MichaelStH Does the requirements above are correct?

[MichaelStH]

Yes they are correct

[MichaelStH]

Requirement: a menu toolbar must have at least one menu

[LVMVRQUXL]

Yes they are correct

Okay, thank you @MichaelStH.

Requirement: a menu toolbar must have at least one menu

I've upgraded the requirements in the request.