listSelect: Utilities Creating a Widget With Selection Boxes
In tkWidgets: R based tk widgets

Description Usage Arguments Details Value Author(s) See Also Examples

These functions create a widget with selection boxes allowing users to view and make selections of items shown on the interface.

listSelect(aList, topLbl = "Select Elements From The Following List",
           typeFun = stdType, valueFun = stdView)
writeSelBox(baseW, aList, typeFun = NULL, valueFun = NULL)
   writeBut(baseW, butList, butWidth = 6)
writeLabel(baseW, typeFun, valueFun)

`aList`	list with names and object pairs (e. g. `a = "AAA"`).
`topLbl`	character string for the text to be shown as a title.
`typeFun`	function that takes an R object as an arguement and returns a description of the object.
`valueFun`	function that takes an R object as an argument and shows the content of the object. The function should get the representation of the object and calls `objViewer` to have the representation rendered in a widget.
`baseW`	a window widget to which the selection boxes will be put.
`butList`	a list with names and function pairs that define the name and behavior of buttons to be put on the widget to be generated
`butWidth`	numerical value specifying the width of buttons to be created.

Both typeFun and valueFun have to take an argument (the R object to be shown). It works well for the valueFun function to call objViewer() with whatever to be shown passed to objViewer as an argument.

listSelect() returns a list with the names of the R objects in the original list associated with TRUE (selected) or FALSE (deselected).

Jianhua Zhang

objViewer

aList <- list(a = "AAA", b = c(123, 456, 789),
              c = as.data.frame(matrix(1:10, ncol = 2)),
              d = stdType)
# Since user interference is required, the example code does not run
# automatically
if(interactive())
  listSelect(aList)