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### tk2edit.R - A data frame editor using TkTable
### Copyright (c), Jeffrey J. Hallman
### Licensed under LGPL 3 or above
###
### Changes:
### - 2007-01-01: fisrt version (for tcltk2_1.0-0)
###
### To do:
### - Rework all this!!!
###dim.tclArray <- function (ta)
###{
### nms <- grep(",", names(ta), value = TRUE)
### if (length(nms) == 0) return(c(0, 0))
### c(max(as.numeric(gsub(",.*", "", nms))),
### max(as.numeric(gsub(".*,", "", nms)))) + 1
###}
tk2edit <- function (x, title = "Matrix Editor", header = NULL,
maxHeight = 600, maxWidth = 800, fontsize = 9, ...)
{
if (!is.tk())
stop("Package Tk is required but not loaded")
if (!inherits(tclRequire("Tktable", warn = FALSE), "tclObj"))
stop("Tcl package 'Tktable' must be installed first")
.Tcl(paste("option add *Table.font {courier", fontsize, "bold}"))
old <- options(scipen = 7)
on.exit(options(old))
makeCharMat <- function (x) {
## Make sure it's a character matrix
mat <- matrix(unlist(x), nrow = nrow(as.matrix(x)))
dm <- dim(mat)
## Check for row and column names
hasRownames <- length(rn <- rownames(x)) > 0
hasColnames <- length(cn <- colnames(x)) > 0
## Fake row and column names if they aren't there
if (!hasRownames) rn <- paste("[", 1:nrow(x), ",]", sep = "")
if(!hasColnames) cn <- paste("[,", 1:ncol(x), "]", sep = "")
## Format the columns
mat[] <- apply(unclass(mat), 2, format, justify = "right")
mat <- rbind(cn, mat)
mat <- cbind(c("", rn), mat)
mat
}
fillTclArrayFromCharMat <- function (ta, cm) {
## cm[,1] contains column names, while cm[1,] has rownames
## cm[1,1] is ignored
for (j in 2:ncol(cm)) ta[[0, j - 1]] <- as.tclObj(cm[1, j], drop = TRUE)
for(i in 2:nrow(cm))
for(j in 1:ncol(cm))
ta[[i - 1, j - 1]] <- as.tclObj(cm[i, j], drop = TRUE)
}
tA <- tclArray()
cmat <- makeCharMat(x)
fillTclArrayFromCharMat(tA, cmat)
tt <- tktoplevel()
tkwm.title(tt, title)
colwidths <- apply(cmat, 2, function(x) max(nchar(x)) + 1 )
nTableCols <- ncol(cmat)
if((moreWidth <- 60 - sum(colwidths)) > 0) {
addEach <- moreWidth %/% length(colwidths)
if(addEach < 5) colwidths <- colwidths + addEach + 1
else nTableCols <- nTableCols + ceiling(moreWidth / 10)
}
tktable <- tkwidget(tt, "table", variable = tA,
rows = nrow(cmat), cols = nTableCols,
titlerows = 1, titlecols = 1, selecttitle = 1,
anchor = "e", multiline = 0, selectmode = "extended",
rowseparator = dQuote("\n"), colseparator = dQuote("\t"),
background = "white", maxheight = maxHeight, maxwidth = maxWidth,
xscrollcommand = function(...) tkset(xscr, ...),
yscrollcommand = function(...) tkset(yscr, ...))
xscr <-tkscrollbar(tt, orient = "horizontal",
command = function(...) tkxview(tktable, ...))
yscr <- tkscrollbar(tt, command = function(...) tkyview(tktable, ...))
## Set column widths
for(i in 1:ncol(cmat)) tcl(tktable, "width", i - 1, colwidths[i])
## Rebind the Backspace key, which somehow gets messed up
string <- "bind Table <BackSpace> {
set ::tk::table::Priv(junk) [%W icursor]
if {[string compare {} $::tk::table::Priv(junk)] && $::tk::table::Priv(junk)} {
%W delete active [expr {$::tk::table::Priv(junk)-1}]
}}"
.Tcl(string)
## Internal functions for buttons
activeRow <- function () as.numeric(tkindex(tktable, "active", "row"))
activeCol <- function () as.numeric(tkindex(tktable, "active", "col"))
undoEdits <- function () {
ta <- tclArray()
fillTclArrayFromCharMat(ta, cmat)
assign("tA", ta, inherits = TRUE)
tkconfigure(tktable, variable = tA)
}
finish <- function () tkdestroy(tt)
cancel <- function () {
undoEdits()
tkdestroy(tt)
}
insertRow <- function () {
row <- activeRow()
col <- activeCol()
tkinsert(tktable, "rows", row, 1)
newCell <- paste(row + 1, col, sep = ",")
tkactivate(tktable, newCell)
tksee(tktable, newCell)
}
insertCol <- function () {
row <- activeRow()
col <- activeCol()
tkinsert(tktable, "cols", col, 1)
newCell <- paste(row, col + 1, sep = ",")
tkactivate(tktable, newCell)
tksee(tktable, newCell)
}
deleteRow <- function () {
if ((row <- activeRow()) != 0)
tkdelete(tktable, "rows", row, 1)
}
deleteCol <- function () {
if ((col <- activeCol()) != 0)
tkdelete(tktable, "cols", col, 1)
}
copyRow <- function () {
src <- activeRow()
if (src != 0){
insertRow()
dst <- activeRow()
for (j in 0:(ncol(tA) - 1)) tA[[dst, j]] <- tA[[src, j]]
}
}
copyCol <- function () {
src <- activeCol()
if (src != 0) {
insertCol()
dst <- activeCol()
for (i in 0:(nrow(tA) - 1)) tA[[i, dst]] <- tA[[i,src]]
}
}
finishButton <- tkbutton(tt, text = "Finish", command = finish)
cancelButton <- tkbutton(tt, text = "Cancel", command = cancel)
undoEditsButton <- tkbutton(tt, text = "Undo Edits", command = undoEdits)
insertRowButton <- tkbutton(tt, text = "Insert Row", command = insertRow)
copyRowButton <- tkbutton(tt, text = "Copy Row", command = copyRow)
deleteRowButton <- tkbutton(tt, text = "Delete Row", command = deleteRow)
insertColButton <- tkbutton(tt, text = "Insert Col", command = insertCol)
copyColButton <- tkbutton(tt, text = "Copy Col", command = copyCol)
deleteColButton <- tkbutton(tt, text = "Delete Col", command = deleteCol)
## Layout
if (length(header) > 0) {
for (label in header)
tkgrid(tklabel(tt, text = label), columnspan = 7, sticky = "nw")
}
tkgrid(tktable, yscr, columnspan = 8)
tkgrid.configure(tktable, sticky = "news")
tkgrid.configure(yscr, sticky = "nsw")
tkgrid(xscr, sticky = "new", columnspan = 8)
tkgrid(insertRowButton, copyRowButton, deleteRowButton, sticky = "news")
tkgrid(insertColButton, copyColButton, deleteColButton,
"x", cancelButton, undoEditsButton, finishButton, sticky = "news")
tkgrid.columnconfigure(tt, 3, weight = 1)
tkgrid.rowconfigure(tt, length(header), weight = 1)
tkactivate(tktable, "0,0")
tktag.configure(tktable, "active", background = "lightyellow2")
tktag.configure(tktable, "title", state = "normal")
tkgrab.set(tt)
tkfocus(tt)
tkwait.window(tt)
outMat <- matrix("", nrow = nrow(tA), ncol = ncol(tA))
for (i in 1:nrow(outMat)) {
for (j in 1:ncol(outMat)) {
val <- tA[[i - 1,j - 1]]
if (is.null(val)) val <- ""
else val <- tclvalue(val)
outMat[i,j] <- val
}
}
## Recover row and column names
rn <- outMat[, 1][-1]
cn <- outMat[1, ][-1]
outMat <- outMat[-1, -1, drop = FALSE]
## Ignore bad and/or NA row and column names
badRownames <- c(grep("\\[.*\\]", rn), (1:length(rn))[is.na(rn)])
if (length(badRownames) != length(rn)) {
rn[badRownames] <- ""
rownames(outMat) <- rn
}
badColnames <- c(grep("\\[.*\\]", cn), (1:length(cn))[is.na(cn)])
if (length(badColnames) != length(cn)) {
cn[badColnames] <- ""
colnames(outMat) <- cn
}
mode(outMat) <- mode(x)
Sys.sleep(0.1)
return(outMat)
}
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