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masaha03/TextImporter.R

Last active December 17, 2015 07:59
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GUI for read.table
Raw
gistfile1.r
library(RGtk2)
ti <- new("TextImporter")
df1 <- ti$run()
Raw
TextImporter.R
setRefClass("TextImporter",
fields = c("widget", "win", "filepath", "data"),
methods = list(
initialize = function(...) {
initFields(...)
data <<- NULL
if(class(win)[[1]] == "uninitializedField") {
win <<- NULL
}
encode.label <- gtkLabelNew(gettext("Character code"))
encode.sep1 <- gtkHSeparatorNew()
encode.lab.hbox <- gtkHBoxNew(spacing=4)
encode.lab.hbox$packStart(encode.label, expand=FALSE)
encode.lab.hbox$packStart(encode.sep1, expand=TRUE, fill=TRUE)
encode1 <- gtkComboBoxNewText()
for(i in iconvlist()) encode1$appendText(i)
index <- which(localeToCharset()[1]==iconvlist()) - 1
if(length(index)==0) index <- -1
encode1$setActive(index)
encode.hbox <- gtkHBoxNew(spacing=5)
encode.hbox$packStart(encode1, expand=FALSE)
header.label <- gtkLabelNew(gettext("Header"))
header.sep1 <- gtkHSeparatorNew()
header.lab.hbox <- gtkHBoxNew(spacing=4)
header.lab.hbox$packStart(header.label, expand=FALSE)
header.lab.hbox$packStart(header.sep1, expand=TRUE, fill=TRUE)
header1 <- gtkRadioButtonNewWithLabel(NULL, "TRUE")
header1$setData("value", TRUE)
header2 <- gtkRadioButtonNewWithLabelFromWidget(header1, "FALSE")
header2$setData("value", FALSE)
header.hbox <- gtkHBoxNew(spacing=5)
header.hbox$packStart(header1, expand=FALSE)
header.hbox$packStart(header2, expand=FALSE)
sepchar.label <- gtkLabelNew(gettext("Separator"))
sepchar.sep1 <- gtkHSeparatorNew()
sepchar.lab.hbox <- gtkHBoxNew(spacing=4)
sepchar.lab.hbox$packStart(sepchar.label, expand=FALSE)
sepchar.lab.hbox$packStart(sepchar.sep1, expand=TRUE, fill=TRUE)
sepchar1 <- gtkRadioButtonNewWithLabel(NULL, gettext("Comma"))
sepchar1$setData("value", ",")
sepchar2 <- gtkRadioButtonNewWithLabelFromWidget(sepchar1, gettext("Whitespace"))
sepchar2$setData("value", " ")
sepchar3 <- gtkRadioButtonNewWithLabelFromWidget(sepchar1, gettext("Tab"))
sepchar3$setData("value", "\t")
sepchar4 <- gtkRadioButtonNewWithLabelFromWidget(sepchar1, gettext("Semicolon"))
sepchar4$setData("value", ";")
sepchar5 <- gtkRadioButtonNewWithLabelFromWidget(sepchar1, gettext("Other:"))
sepchar5$setData("value", "")
sepchar.entry <- gtkEntryNew()
sepchar.entry$setWidthChars(4)
sepchar.hbox <- gtkHBoxNew(spacing=5)
sepchar.hbox$packStart(sepchar5, expand=FALSE)
sepchar.hbox$packStart(sepchar.entry, expand=FALSE)
missing.label <- gtkLabelNew(gettext("Missing"))
missing.sep1 <- gtkHSeparatorNew()
missing.lab.hbox <- gtkHBoxNew(spacing=4)
missing.lab.hbox$packStart(missing.label, expand=FALSE)
missing.lab.hbox$packStart(missing.sep1, expand=TRUE, fill=TRUE)
missing1 <- gtkRadioButtonNewWithLabel(NULL, gettext("Whitespace"))
missing1$setData("value", " ")
missing2 <- gtkRadioButtonNewWithLabelFromWidget(missing1, gettext("Blank"))
missing2$setData("value", "")
missing3 <- gtkRadioButtonNewWithLabelFromWidget(missing1, gettext("Period"))
missing3$setData("value", ".")
missing4 <- gtkRadioButtonNewWithLabelFromWidget(missing1, gettext("\"NA\""))
missing4$setData("value", "NA")
missing5 <- gtkRadioButtonNewWithLabelFromWidget(missing1, gettext("Other:"))
missing5$setData("value", "")
missing.entry <- gtkEntryNew()
missing.entry$setWidthChars(4)
missing.hbox <- gtkHBoxNew(spacing=5)
missing.hbox$packStart(missing5, expand=FALSE)
missing.hbox$packStart(missing.entry, expand=FALSE)
decimal.label <- gtkLabelNew(gettext("Decimal"))
decimal.sep1 <- gtkHSeparatorNew()
decimal.lab.hbox <- gtkHBoxNew(spacing=4)
decimal.lab.hbox$packStart(decimal.label, expand=FALSE)
decimal.lab.hbox$packStart(decimal.sep1, expand=TRUE, fill=TRUE)
decimal1 <- gtkRadioButtonNewWithLabel(NULL, gettext("Period"))
decimal1$setData("value", ".")
decimal2 <- gtkRadioButtonNewWithLabelFromWidget(decimal1, gettext("Comma"))
decimal2$setData("value", ",")
decimal.hbox <- gtkHBoxNew(spacing=5)
decimal.hbox$packStart(decimal1, expand=FALSE)
decimal.hbox$packStart(decimal2, expand=FALSE)
quote.label <- gtkLabelNew(gettext("Quote"))
quote.sep1 <- gtkHSeparatorNew()
quote.lab.hbox <- gtkHBoxNew(spacing=4)
quote.lab.hbox$packStart(quote.label, expand=FALSE)
quote.lab.hbox$packStart(quote.sep1, expand=TRUE, fill=TRUE)
quote1 <- gtkRadioButtonNewWithLabel(NULL, gettext("Double quote (\")"))
quote1$setData("value", "\"")
quote2 <- gtkRadioButtonNewWithLabelFromWidget(quote1, gettext("Single quote (')"))
quote2$setData("value", "'")
quote3 <- gtkRadioButtonNewWithLabelFromWidget(quote1, gettext("None"))
quote3$setData("value", "")
vbox.options <- gtkVBoxNew(homogeneous=FALSE,spacing=2)
vbox.options$setBorderWidth(5)
vbox.options$packStart(encode.lab.hbox, expand=FALSE, padding=3)
vbox.options$packStart(encode.hbox, expand=FALSE)
vbox.options$packStart(header.lab.hbox, expand=FALSE, padding=3)
vbox.options$packStart(header.hbox, expand=FALSE)
vbox.options$packStart(sepchar.lab.hbox, expand=FALSE, padding=3)
vbox.options$packStart(sepchar1, expand=FALSE)
vbox.options$packStart(sepchar2, expand=FALSE)
vbox.options$packStart(sepchar3, expand=FALSE)
vbox.options$packStart(sepchar4, expand=FALSE)
vbox.options$packStart(sepchar.hbox, expand=FALSE)
vbox.options$packStart(missing.lab.hbox, expand=FALSE, padding=3)
vbox.options$packStart(missing1, expand=FALSE)
vbox.options$packStart(missing2, expand=FALSE)
vbox.options$packStart(missing3, expand=FALSE)
vbox.options$packStart(missing4, expand=FALSE)
vbox.options$packStart(missing.hbox, expand=FALSE)
vbox.options$packStart(decimal.lab.hbox, expand=FALSE, padding=3)
vbox.options$packStart(decimal.hbox, expand=FALSE)
vbox.options$packStart(quote.lab.hbox, expand=FALSE, padding=3)
vbox.options$packStart(quote1, expand=FALSE)
vbox.options$packStart(quote2, expand=FALSE)
vbox.options$packStart(quote3, expand=FALSE)
textview <- gtkTextViewNewWithBuffer()
sw1 <- gtkScrolledWindowNew()
sw1$setPolicy(GtkPolicyType["automatic"], GtkPolicyType["automatic"])
sw1$setShadowType(GtkShadowType["in"])
sw1$add(textview)
textview.label <- gtkLabelNew(gettext("Input File (first 20 Lines)"))
textview.hbox <- gtkHBoxNew()
textview.hbox$packStart(textview.label, expand=FALSE)
vbox.textview <- gtkVBoxNew(spacing=2)
vbox.textview$packStart(textview.hbox, expand=FALSE)
vbox.textview$packStart(sw1, expand=TRUE)
treeview <- gtkTreeViewNew()
sw2 <- gtkScrolledWindowNew()
sw2$setPolicy(GtkPolicyType["automatic"], GtkPolicyType["automatic"])
sw2$setShadowType(GtkShadowType["in"])
sw2$add(treeview)
treeview.label <- gtkLabelNew(gettext("Preview (first 20 rows)"))
treeview.hbox <- gtkHBoxNew()
treeview.hbox$packStart(treeview.label, expand=FALSE)
vbox.treeview <- gtkVBoxNew(spacing=2)
vbox.treeview$packStart(treeview.hbox, expand=FALSE)
vbox.treeview$packStart(sw2, expand=TRUE)
paned1 <- gtkVPanedNew()
paned1$pack1(vbox.textview)
paned1$pack2(vbox.treeview)
paned1$setPosition(240)
paned1$setBorderWidth(5)
paned2 <- gtkHPanedNew()
paned2$pack1(vbox.options)
paned2$pack2(paned1)
widget <<- gtkDialogNewWithButtons(title="Options",
parent=win,
flags=5,
"gtk-ok", GtkResponseType["accept"],
"gtk-cancel", GtkResponseType["reject"],
show=FALSE)
widget$setSizeRequest(600, -1)
widget[["vbox"]]$add(paned2)
reload <- function(...) {
encode <- localize(encode1$getActiveText())
con <- file(filepath, encoding=encode)
input <- paste(readLines(con, n=20), collapse="\n")
preview <- read.table(con, nrows=20,
header=getActiveData(header1),
sep=getActiveData(sepchar1),
na.strings=getActiveData(missing1),
quote=getActiveData(quote1),
dec=getActiveData(decimal1))
textview$getBuffer()$setText(input)
lapply(treeview$getColumns(), treeview$removeColumn)
treeview$setModel(rGtkDataFrame(preview))
renderer <- gtkCellRendererTextNew()
for (i in seq_len(ncol(preview))) {
column <- gtkTreeViewColumnNewWithAttributes(
title=colnames(preview)[i],
cell=renderer, text=i-1)
treeview$appendColumn(column)
}
}
gSignalConnect(encode1, "changed", reload)
gSignalConnect(header1, "toggled", reload)
gSignalConnect(header2, "toggled", reload)
gSignalConnect(sepchar1, "toggled", reload)
gSignalConnect(sepchar2, "toggled", reload)
gSignalConnect(sepchar3, "toggled", reload)
gSignalConnect(sepchar4, "toggled", reload)
gSignalConnect(sepchar5, "toggled", reload)
gSignalConnect(missing1, "toggled", reload)
gSignalConnect(missing2, "toggled", reload)
gSignalConnect(missing3, "toggled", reload)
gSignalConnect(missing4, "toggled", reload)
gSignalConnect(missing5, "toggled", reload)
gSignalConnect(decimal1, "toggled", reload)
gSignalConnect(decimal2, "toggled", reload)
gSignalConnect(quote1, "toggled", reload)
gSignalConnect(quote2, "toggled", reload)
gSignalConnect(quote3, "toggled", reload)
gSignalConnect(sepchar.entry, "changed", function(...){
text <- localize(sepchar.entry$getText())
sepchar5$setData("value", text)
sepchar5$setActive(TRUE)
})
gSignalConnect(missing.entry, "changed", function(...){
text <- localize(missing.entry$getText())
missing5$setData("value", text)
missing5$setActive(TRUE)
})
gSignalConnect(widget, "show", reload)
gSignalConnect(widget, "delete-event", function(...){
widget$hide()
return(TRUE)
})
gSignalConnect(widget, "response", function(widget, response){
widget$hide()
if (response == GtkResponseType["accept"]) {
data <<- read.table(filepath, nrows=20,
header=getActiveData(header1),
sep=getActiveData(sepchar1),
na.strings=getActiveData(missing1),
quote=getActiveData(quote1),
dec=getActiveData(decimal1),
fileEncoding=localize(encode1$getActiveText()))
} else {
data <<- NULL
}
})
},
getActiveData = function(radio) {
group <- radio$getGroup()
result <- sapply(group,
function(x) if(x$getActive()) x$getData("value"))
result <- unlist(result)
return(result)
},
run = function(filepath) {
dialog <- gtkFileChooserDialogNew(title=gettext("Select text file"),
parent=win,
action=GtkFileChooserAction["open"],
"gtk-open", GtkResponseType["accept"],
"gtk-cancel", GtkResponseType["cancel"],
show=FALSE)
response <- dialog$run()
dialog$hide()
if (response != GtkResponseType["accept"]) {
return(NULL)
} else {
filepath <<- localize(dialog$getFilename())
widget$run()
return(data)
}
},
localize = function(char) iconv(char, "UTF-8", localeToCharset()[1])
)
)
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