How to set a macro to surround `\item` in ConTeXt?

Question

I have an itemized list like this:

\starttext
    \startitemize[n]
         \item This is some text.
         \item This is some more text.
         \item This is some yet more text text.
    \stopitemize
\stoptext

How can I assign a custom macro to surround all of the text in the list, it would be equivalent to this:

\define[1]\mymacro{Do some stuff #1}

\starttext
    \startitemize[n]
         \item \mymacro{This is some text.}
         \item \mymacro{This is some more text.}
         \item \mymacro{This is some yet more text text.}
    \stopitemize
\stoptext

Basically I need to do some settings to the itemize such that the equivalent of placing \mymacro{} around every item in the itemized list.

How can I get a macro to surround \item's text in ConTeXt?

Answer 1

Following the advice by TeXnician and the correction by Henri Menke, this seems to work in your case:

\define[1]\mymacro{Do some stuff #1 Do some more stuff}

\setupitemize[command=\mymacro]

\starttext
    \startitemize[n]
         \item{This is some text.}
         \item{This is some more text.}
         \item{This is some yet more text text.}
    \stopitemize
\stoptext

It might be better to define your own itemization, not to change the default one if you want to use that one as well. This could work:

\define[1]\mymacro{Do some stuff #1 Do some more stuff}

\defineitemgroup[myitems]
\setupitemgroup[myitems][each][n]
\setupitemgroup[myitems][each][command=\mymacro]

\starttext
    \startitemize[n]
     \item This is some text.
     \item This is some more text.
     \item This is some yet more text text.
    \stopitemize

    \startmyitems
     \item{This is some text.}
     \item{This is some more text.}
     \item{This is some yet more text text.}
    \stopmyitems
\stoptext