chooseFromList

Allows the user to select single or multiple items from a list. Entries can be selected based on individual choice, groups, regex or all.

Usage

chooseFromList(
  theList,
  type = "items",
  userinfo = NULL,
  addAllPattern = TRUE,
  returnBoolean = FALSE,
  multiple = TRUE,
  userinput = FALSE,
  errormessage = NULL
)

Arguments

theList

list or character vector to be selected from, names can specify groups

type

string in plural shown to user to understand what they have to choose

userinfo

string printed to the user before choosing

addAllPattern

boolean whether 'all' and 'Search by pattern' options are added

returnBoolean

TRUE: returns array with dimension of theList with FALSE and TRUE, which erases the order in which entries were selected FALSE: returns selected entries of theList, conserving the order in which entries were selected

multiple

TRUE: allows to select multiple entries. FALSE: no

userinput

string provided by the user. If not supplied, user is asked (mainly for testing)

errormessage

string used internally to tell the user before retrying that a selection does not make sense

Value

list or character vector, either a boolean with same length as theList or only the selected items.

Author

Oliver Richters

Examples

 if (FALSE) { # \dontrun{
    chooseFromList(
      theList = c(Letter = "A", Letter = "B", Number = "1", Number = "2"),
      type = "characters",
      userinfo = "Please don't select B, it hurts.",
      returnBoolean = FALSE,
      multiple = TRUE)
  } # }