gbasicdialog: Constructor for modal dialog that can contain an arbitrary...

In jverzani/gWidgets2: Rewrite of gWidgets API for Simplified GUI Construction

Description

The basic dialog is basically a modal window. To use there is a 3 step process: 1) Create a container by calling this constructor, say dlg; 2) use dlg as a container for your subsequent GUI; 3) set the dialog to be modal by calling visible(dlg). (One can't call visible(dlg) <- TRUE.)

generic for toolkit dispatch

We overrided the basic use of visible for the gbasicdialog container to have it become visible and modal after this call. The better suited call visible(dlg) <- TRUE does not work as wanted, for we want to capture the return value.

dispose method for a basic dialog

Usage

gbasicdialog(title = "Dialog", parent = NULL, do.buttons = TRUE,
  handler = NULL, action = NULL, ..., toolkit = guiToolkit())

.gbasicdialog(toolkit, title = "Dialog", parent = NULL, do.buttons = TRUE,
  handler = NULL, action = NULL, ...)

## S3 method for class 'GBasicDialog'
visible(obj, ...)

## S3 method for class 'GBasicDialog'
dispose(obj, ...)

Arguments

title	title for window
parent	parent to display by
do.buttons	FALSE to suppress buttons when no parent
handler	handler called when Ok button invoked
action	passed to handler for OK button
...	ignored
toolkit	toolkit
obj	dialog object

Value

A GBasicDialog instance with a visible method

logical indicating which button was pushed (or TRUE if no buttons present)

See Also

gmessage, gconfirm, gbasicdialog, galert

Examples

## Not run: 
## a modal dialog for editing a data frme 
fix_df <- function(DF, ...) {
  dfname <- deparse(substitute(DF))
  w <- gbasicdialog(..., handler=function(h,...) {
    assign(dfname, df[,], .GlobalEnv)
  })
  g <- ggroup(cont=w, horizontal=FALSE)
  glabel("Edit a data frame", cont=g)
  df <- gdf(DF, cont=g, expand=TRUE)
  size(w) <- c(400, 400)
  out <- visible(w)
}

m <- mtcars[1:3, 1:4]
fix_df(m)

## End(Not run)

jverzani/gWidgets2 documentation built on May 20, 2019, 5:17 a.m.