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#
# fileselect.tcl --
# simple file selector.
#
# Mario Jorge Silva msilva@cs.Berkeley.EDU
# University of California Berkeley Ph: +1(510)642-8248
# Computer Science Division, 571 Evans Hall Fax: +1(510)642-5775
# Berkeley CA 94720
#
# Layout:
#
# file: +----+
# ____________________ | OK |
# +----+
#
# +------------------+ Cancel
# | .. |S
# | file1 |c
# | file2 |r
# | |b
# | filen |a
# | |r
# +------------------+
# currrent-directory
#
# Copyright 1993 Regents of the University of California
# Permission to use, copy, modify, and distribute this
# software and its documentation for any purpose and without
# fee is hereby granted, provided that this copyright
# notice appears in all copies. The University of California
# makes no representations about the suitability of this
# software for any purpose. It is provided "as is" without
# express or implied warranty.
#
# names starting with "fileselect" are reserved by this module
# no other names used.
# use the "option" command for further configuration
option add *Listbox*font \
"-*-helvetica-medium-r-normal-*-12-*-*-*-p-*-iso8859-1" startupFile
option add *Entry*font \
"-*-helvetica-medium-r-normal-*-12-*-*-*-p-*-iso8859-1" startupFile
option add *Label*font \
"-*-helvetica-medium-r-normal-*-12-*-*-*-p-*-iso8859-1" startupFile
# this is the default proc called when "OK" is pressed
# to indicate yours, give it as the first arg to "fileselect"
proc fileselect.default.cmd {f} {
puts stderr "selected file $f"
}
# this is the default proc called when error is detected
# indicate your own pro as an argument to fileselect
proc fileselect.default.errorHandler {errorMessage} {
puts stdout "error: $errorMessage"
catch { cd ~ }
}
# this is the proc that creates the file selector box
proc fileselect {
{cmd fileselect.default.cmd}
{purpose "Open file:"}
{w .fileSelectWindow}
{errorHandler fileselect.default.errorHandler}} {
catch {destroy $w}
toplevel $w
grab $w
wm title $w "Select File"
# path independent names for the widgets
global fileselect
set fileselect(entry) $w.file.eframe.entry
set fileselect(list) $w.file.sframe.list
set fileselect(scroll) $w.file.sframe.scroll
set fileselect(ok) $w.bframe.okframe.ok
set fileselect(cancel) $w.bframe.cancel
set fileselect(dirlabel) $w.file.dirlabel
# widgets
frame $w.file -bd 10
frame $w.bframe -bd 10
pack append $w \
$w.file {left filly} \
$w.bframe {left expand frame n}
frame $w.file.eframe
frame $w.file.sframe
label $w.file.dirlabel -anchor e -width 24 -text [pwd]
pack append $w.file \
$w.file.eframe {top frame w} \
$w.file.sframe {top fillx} \
$w.file.dirlabel {top frame w}
label $w.file.eframe.label -anchor w -width 24 -text $purpose
entry $w.file.eframe.entry -relief sunken
pack append $w.file.eframe \
$w.file.eframe.label {top expand frame w} \
$w.file.eframe.entry {top fillx frame w}
scrollbar $w.file.sframe.yscroll -relief sunken \
-command "$w.file.sframe.list yview"
listbox $w.file.sframe.list -relief sunken \
-yscroll "$w.file.sframe.yscroll set"
pack append $w.file.sframe \
$w.file.sframe.yscroll {right filly} \
$w.file.sframe.list {left expand fill}
# buttons
frame $w.bframe.okframe -borderwidth 2 -relief sunken
button $w.bframe.okframe.ok -text OK -relief raised -padx 10 \
-command "fileselect.ok.cmd $w $cmd $errorHandler"
button $w.bframe.cancel -text cancel -relief raised -padx 10 \
-command "fileselect.cancel.cmd $w"
pack append $w.bframe.okframe $w.bframe.okframe.ok {padx 10 pady 10}
pack append $w.bframe $w.bframe.okframe {expand padx 20 pady 20}\
$w.bframe.cancel {top}
# Fill the listbox with a list of the files in the directory (run
# the "/bin/ls" command to get that information).
# to not display the "." files, remove the -a option and fileselect
# will still work
$fileselect(list) insert end ".."
foreach i [exec /bin/ls -a [pwd]] {
if {[string compare $i "."] != 0 && \
[string compare $i ".."] != 0 } {
$fileselect(list) insert end $i
}
}
# Set up bindings for the browser.
bind $fileselect(entry) <Return> {eval $fileselect(ok) invoke}
bind $fileselect(entry) <Control-c> {eval $fileselect(cancel) invoke}
bind $w <Control-c> {eval $fileselect(cancel) invoke}
bind $w <Return> {eval $fileselect(ok) invoke}
#tk_listboxSingleSelect $fileselect(list)
bind $fileselect(list) <Button-1> {
# puts stderr "button 1 release"
%W select from [%W nearest %y]
$fileselect(entry) delete 0 end
$fileselect(entry) insert 0 [%W get [%W nearest %y]]
}
bind $fileselect(list) <Key> {
%W select from [%W nearest %y]
$fileselect(entry) delete 0 end
$fileselect(entry) insert 0 [%W get [%W nearest %y]]
}
bind $fileselect(list) <Double-ButtonPress-1> {
# puts stderr "double button 1"
%W select from [%W nearest %y]
$fileselect(entry) delete 0 end
$fileselect(entry) insert 0 [%W get [%W nearest %y]]
$fileselect(ok) invoke
}
bind $fileselect(list) <Return> {
%W select from [%W nearest %y]
$fileselect(entry) delete 0 end
$fileselect(entry) insert 0 [%W get [%W nearest %y]]
$fileselect(ok) invoke
}
# set kbd focus to entry widget
focus $fileselect(entry)
}
# auxiliary button procedures
proc fileselect.cancel.cmd {w} {
# puts stderr "Cancel"
destroy $w
}
proc fileselect.ok.cmd {w cmd errorHandler} {
global fileselect
set selected [$fileselect(entry) get]
# some nasty file names may cause "file isdirectory" to return an error
set sts [catch {
file isdirectory $selected
} errorMessage ]
if { $sts != 0 } then {
$errorHandler $errorMessage
destroy $w
return
}
# clean the text entry and prepare the list
$fileselect(entry) delete 0 end
$fileselect(list) delete 0 end
$fileselect(list) insert end ".."
# perform globbing on the selection.
# If globing returns an error, return (leaving the file listbox empty)
# If resulting list length > 1, put the list on the file listbox and return
# If globing expands to a list of filenames in multiple directories,
# the indicated regexp is invalid and the error handler is called instead.
set sts [catch {
set globlist [glob [list $selected]]
} errorMessage ]
if { $sts != 0 } then {
return
}
if {[llength $globlist] > 1} {
if {[regexp "/" $globlist] != 0} {
$errorHandler [list "Invalid regular expression, " $selected, "."]
destroy $w
return
}
foreach i $globlist {
if {[string compare $i "."] != 0 && \
[string compare $i ".."] != 0} {
$fileselect(list) insert end $i
}
}
return
}
# selection may be a directory. Expand it.
if {[file isdirectory $selected] != 0} {
cd $selected
set dir [pwd]
$fileselect(dirlabel) configure -text $dir
foreach i [exec /bin/ls -a $dir] {
if {[string compare $i "."] != 0 && \
[string compare $i ".."] != 0} {
$fileselect(list) insert end $i
}
}
return
}
destroy $w
$cmd $selected
}
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