Offer the layouts of the container macro and the menu types as lists in the Edit Macro dialog

The container and menu macros take a value from a short list in a free text field of the Edit Macro dialog, so a typo or another case is accepted and gives no layout or a plain list.

The macros to change, with the file where most of the fix is done:

• container: ContainerMacroParameters.java.
• menu: MenuMacro.xml.

The main problems:

• The layouts of container are components, only columns in XWiki Standard, so their list has to be computed on the wiki.
• The menu type combines a type, horizontal or vertical, with modifiers, which a wiki macro cannot declare as a list.

Depends on

Most of these fields cannot be offered before these generic changes, each giving the macro the means to declare the expected value:

• XWIKI-23045, which lets a parameter get its values from a provider, with or without custom values.

KOs covered

Impact found on macro fluidity

These 2 KOs come from the WYSIWYG usability audit of the macros, under the criterion C4 input-assistance of its usability criteria. The page of each macro, linked in the table, has the full notes and the steps to reproduce. Fixing them means changing the declaration of the parameters in the macro definitions.