Прога / tina-2.5.2 / tcl / lib / tk8.3 / choosedir

# choosedir.tcl --
#
# Choose directory dialog implementation for Unix/Mac.
#
# Copyright (c) 1998-2000 by Scriptics Corporation.
# All rights reserved.
#
# RCS: @(#) $Id: choosedir.tcl,v 1.7 2000/04/19 23:12:56 hobbs Exp $

# Make sure the tk::dialog namespace, in which all dialogs should live, exists
namespace eval ::tk::dialog {}
namespace eval ::tk::dialog::file {}

# Make the chooseDir namespace inside the dialog namespace
namespace eval ::tk::dialog::file::chooseDir {
}

# ::tk::dialog::file::tkChooseDirectory --
#
# Implements the TK directory selection dialog.
#
# Arguments:
# args Options parsed by the procedure.
#
proc ::tk::dialog::file::chooseDir::tkChooseDirectory {args} {
global tkPriv
set dataName __tk_choosedir
upvar ::tk::dialog::file::$dataName data
::tk::dialog::file::chooseDir::Config $dataName $args

if {[string equal $data(-parent) .]} {
set w .$dataName
} else {
set w $data(-parent).$dataName
}

# (re)create the dialog box if necessary
#
if {![winfo exists $w]} {
::tk::dialog::file::Create $w TkChooseDir
} elseif {[string compare [winfo class $w] TkChooseDir]} {
destroy $w
::tk::dialog::file::Create $w TkChooseDir
} else {
set data(dirMenuBtn) $w.f1.menu
set data(dirMenu) $w.f1.menu.menu
set data(upBtn) $w.f1.up
set data(icons) $w.icons
set data(ent) $w.f2.ent
set data(okBtn) $w.f2.ok
set data(cancelBtn) $w.f3.cancel
}
wm transient $w $data(-parent)

trace variable data(selectPath) w [list ::tk::dialog::file::SetPath $w]
$data(dirMenuBtn) configure \
-textvariable ::tk::dialog::file::${dataName}(selectPath)

set data(filter) "*"
set data(previousEntryText) ""
::tk::dialog::file::UpdateWhenIdle $w

# Withdraw the window, then update all the geometry information
# so we know how big it wants to be, then center the window in the
# display and de-iconify it.

::tk::PlaceWindow $w widget $data(-parent)
wm title $w $data(-title)

# Set a grab and claim the focus too.

::tk::SetFocusGrab $w $data(ent)
$data(ent) delete 0 end
$data(ent) insert 0 $data(selectPath)
$data(ent) selection range 0 end
$data(ent) icursor end

# Wait for the user to respond, then restore the focus and
# return the index of the selected button. Restore the focus
# before deleting the window, since otherwise the window manager
# may take the focus away so we can't redirect it. Finally,
# restore any grab that was in effect.

tkwait variable tkPriv(selectFilePath)

::tk::RestoreFocusGrab $w $data(ent) withdraw

# Cleanup traces on selectPath variable
#

foreach trace [trace vinfo data(selectPath)] {
trace vdelete data(selectPath) [lindex $trace 0] [lindex $trace 1]
}
$data(dirMenuBtn) configure -textvariable {}

# Return value to user
#

return $tkPriv(selectFilePath)
}

# ::tk::dialog::file::chooseDir::Config --
#
# Configures the Tk choosedir dialog according to the argument list
#
proc ::tk::dialog::file::chooseDir::Config {dataName argList} {
upvar ::tk::dialog::file::$dataName data

# 0: Delete all variable that were set on data(selectPath) the
# last time the file dialog is used. The traces may cause troubles
# if the dialog is now used with a different -parent option.
#
foreach trace [trace vinfo data(selectPath)] {
trace vdelete data(selectPath) [lindex $trace 0] [lindex $trace 1]
}

# 1: the configuration specs
#
set specs {
{-mustexist "" "" 0}
{-initialdir "" "" ""}
{-parent "" "" "."}
{-title "" "" ""}
}

# 2: default values depending on the type of the dialog
#
if {![info exists data(selectPath)]} {
# first time the dialog has been popped up
set data(selectPath) [pwd]
}

# 3: parse the arguments
#
tclParseConfigSpec ::tk::dialog::file::$dataName $specs "" $argList

if {$data(-title) == ""} {
set data(-title) "Choose Directory"
}

# 4: set the default directory and selection according to the -initial
# settings
#
if {$data(-initialdir) != ""} {
# Ensure that initialdir is an absolute path name.
if {[file isdirectory $data(-initialdir)]} {
set old [pwd]
cd $data(-initialdir)
set data(selectPath) [pwd]
cd $old
} else {
set data(selectPath) [pwd]
}
}

if {![winfo exists $data(-parent)]} {
error "bad window path name \"$data(-parent)\""
}
}

# Gets called when user presses Return in the "Selection" entry or presses OK.
#
proc ::tk::dialog::file::chooseDir::OkCmd {w} {
upvar ::tk::dialog::file::[winfo name $w] data

# This is the brains behind selecting non-existant directories. Here's
# the flowchart:
# 1. If the icon list has a selection, join it with the current dir,
# and return that value.
# 1a. If the icon list does not have a selection ...
# 2. If the entry is empty, do nothing.
# 3. If the entry contains an invalid directory, then...
# 3a. If the value is the same as last time through here, end dialog.
# 3b. If the value is different than last time, save it and return.
# 4. If entry contains a valid directory, then...
# 4a. If the value is the same as the current directory, end dialog.
# 4b. If the value is different from the current directory, change to
# that directory.

set iconText [tkIconList_Get $data(icons)]
if { ![string equal $iconText ""] } {
set iconText [file join $data(selectPath) $iconText]
::tk::dialog::file::chooseDir::Done $w $iconText
} else {
set text [$data(ent) get]
if { [string equal $text ""] } {
return
}
set text [eval file join [file split [string trim $text]]]
if { ![file exists $text] || ![file isdirectory $text] } {
# Entry contains an invalid directory. If it's the same as the
# last time they came through here, reset the saved value and end
# the dialog. Otherwise, save the value (so we can do this test
# next time).
if { [string equal $text $data(previousEntryText)] } {
set data(previousEntryText) ""
::tk::dialog::file::chooseDir::Done $w $text
} else {
set data(previousEntryText) $text
}
} else {
# Entry contains a valid directory. If it is the same as the
# current directory, end the dialog. Otherwise, change to that
# directory.
if { [string equal $text $data(selectPath)] } {
::tk::dialog::file::chooseDir::Done $w $text
} else {
set data(selectPath) $text
}
}
}
return
}

proc ::tk::dialog::file::chooseDir::DblClick {w} {
upvar ::tk::dialog::file::[winfo name $w] data
set text [tkIconList_Get $data(icons)]
if {[string compare $text ""]} {
set file $data(selectPath)
if {[file isdirectory $file]} {
::tk::dialog::file::ListInvoke $w $text
return
}
}
}

# Gets called when user browses the IconList widget (dragging mouse, arrow
# keys, etc)
#
proc ::tk::dialog::file::chooseDir::ListBrowse {w text} {
upvar ::tk::dialog::file::[winfo name $w] data

if {[string equal $text ""]} {
return
}

set file [::tk::dialog::file::JoinFile $data(selectPath) $text]
$data(ent) delete 0 end
$data(ent) insert 0 $file
}

# ::tk::dialog::file::chooseDir::Done --
#
# Gets called when user has input a valid filename. Pops up a
# dialog box to confirm selection when necessary. Sets the
# tkPriv(selectFilePath) variable, which will break the "tkwait"
# loop in tk_chooseDirectory and return the selected filename to the
# script that calls tk_getOpenFile or tk_getSaveFile
#
proc ::tk::dialog::file::chooseDir::Done {w {selectFilePath ""}} {
upvar ::tk::dialog::file::[winfo name $w] data
global tkPriv

if {[string equal $selectFilePath ""]} {
set selectFilePath $data(selectPath)
}
if { $data(-mustexist) } {
if { ![file exists $selectFilePath] || \
![file isdir $selectFilePath] } {
return
}
}
set tkPriv(selectFilePath) $selectFilePath
}