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# choosedir.tcl -- # # Choose directory dialog implementation for Unix/Mac. # # Copyright (c) 1998-2000 by Scriptics Corporation. # All rights reserved. # # RCS: @(#) $Id: choosedir.tcl,v 1.15.2.2 2006/01/25 18:21:41 dgp 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 { namespace import -force ::tk::msgcat::* }
# ::tk::dialog::file::chooseDir:: -- # # Implements the TK directory selection dialog. # # Arguments: # args Options parsed by the procedure. # proc ::tk::dialog::file::chooseDir:: {args} { variable ::tk::Priv set dataName __tk_choosedir upvar ::tk::dialog::file::$dataName data ::tk::dialog::file::chooseDir::Config $dataName $args
if {$data(-parent) eq "."} { 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 {[winfo class $w] ne "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.f2.cancel set data(hiddenBtn) $w.f2.hidden } if {$::tk::dialog::file::showHiddenBtn} { $data(hiddenBtn) configure -state normal grid $data(hiddenBtn) } else { $data(hiddenBtn) configure -state disabled grid remove $data(hiddenBtn) }
# Dialog boxes should be transient with respect to their parent, # so that they will always stay on top of their parent window. However, # some window managers will create the window as withdrawn if the parent # window is withdrawn or iconified. Combined with the grab we put on the # window, this can hang the entire application. Therefore we only make # the dialog transient if the parent is viewable.
if {[winfo viewable [winfo toplevel $data(-parent)]] } { wm transient $w $data(-parent) }
trace add variable data(selectPath) write [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.
vwait ::tk::Priv(selectFilePath)
::tk::RestoreFocusGrab $w $data(ent) withdraw
# Cleanup traces on selectPath variable #
foreach trace [trace info variable data(selectPath)] { trace remove variable data(selectPath) [lindex $trace 0] [lindex $trace 1] } $data(dirMenuBtn) configure -textvariable {}
# Return value to user # return $Priv(selectFilePath) }
# ::tk::dialog::file::chooseDir::Config -- # # Configures the Tk choosedir dialog according to the argument list # proc ::tk::dialog::file::chooseDir::Config {dataName argList} { upvar ::tk::dialog::file::$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 info variable data(selectPath)] { trace remove variable 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) eq ""} { set data(-title) "[mc "Choose Directory"]" } # Stub out the -multiple value for the dialog; it doesn't make sense for # choose directory dialogs, but we have to have something there because we # share so much code with the file dialogs. set data(-multiple) 0
# 4: set the default directory and selection according to the -initial # settings # if {$data(-initialdir) ne ""} { # 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 selection [tk::IconList_Curselection $data(icons)] if { [llength $selection] != 0 } { set iconText [tk::IconList_Get $data(icons) [lindex $selection 0]] set iconText [file join $data(selectPath) $iconText] ::tk::dialog::file::chooseDir::Done $w $iconText } else { set text [$data(ent) get] if { $text eq "" } { 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 { $text eq $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 { $text eq $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 selection [tk::IconList_Curselection $data(icons)] if { [llength $selection] != 0 } { set filenameFragment \ [tk::IconList_Get $data(icons) [lindex $selection 0]] set file $data(selectPath) if {[file isdirectory $file]} { ::tk::dialog::file::ListInvoke $w [list $filenameFragment] 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 $w] data
if {$text eq ""} { 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 # Priv(selectFilePath) variable, which will break the "vwait" # 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 $w] data variable ::tk::Priv
if {$selectFilePath eq ""} { set selectFilePath $data(selectPath) } if { $data(-mustexist) } { if { ![file exists $selectFilePath] || \ ![file isdir $selectFilePath] } { return } } set Priv(selectFilePath) $selectFilePath }
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