PC World 2002 May/PCWorld_2002-05_cd.bin/Software/TemaCD/activetcltk/ActiveTcl8.3.4.1-8.win32-ix86.exe/ActiveTcl8.3.4.1-win32-ix86/lib/tk8.3/tkfbox.tcl

Text File | 2001-10-22 | 39.8 KB | 1,495 lines

# tkfbox.tcl --
#
#    Implements the "TK" standard file selection dialog box. This
#    dialog box is used on the Unix platforms whenever the tk_strictMotif
#    flag is not set.
#
#    The "TK" standard file selection dialog box is similar to the
#    file selection dialog box on Win95(TM). The user can navigate
#    the directories by clicking on the folder icons or by
#    selectinf the "Directory" option menu. The user can select
#    files by clicking on the file icons or by entering a filename
#    in the "Filename:" entry.
#
# RCS: @(#) $Id: tkfbox.tcl,v 1.19 2000/04/19 23:12:56 hobbs Exp $
#
# Copyright (c) 1994-1998 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#

#----------------------------------------------------------------------
#
#              I C O N   L I S T
#
# This is a pseudo-widget that implements the icon list inside the
# tkFDialog dialog box.
#
#----------------------------------------------------------------------

# tkIconList --
#
#    Creates an IconList widget.
#
proc tkIconList {w args} {
    upvar #0 $w data

    tkIconList_Config $w $args
    tkIconList_Create $w
}

# tkIconList_Config --
#
#    Configure the widget variables of IconList, according to the command
#    line arguments.
#
proc tkIconList_Config {w argList} {
    upvar #0 $w data

    # 1: the configuration specs
    #
    set specs {
    {-browsecmd "" "" ""}
    {-command "" "" ""}
    }

    # 2: parse the arguments
    #
    tclParseConfigSpec $w $specs "" $argList
}

# tkIconList_Create --
#
#    Creates an IconList widget by assembling a canvas widget and a
#    scrollbar widget. Sets all the bindings necessary for the IconList's
#    operations.
#
proc tkIconList_Create {w} {
    upvar #0 $w data

    frame $w
    set data(sbar)   [scrollbar $w.sbar -orient horizontal \
    -highlightthickness 0 -takefocus 0]
    set data(canvas) [canvas $w.canvas -bd 2 -relief sunken \
    -width 400 -height 120 -takefocus 1]
    pack $data(sbar) -side bottom -fill x -padx 2
    pack $data(canvas) -expand yes -fill both

    $data(sbar) config -command [list $data(canvas) xview]
    $data(canvas) config -xscrollcommand [list $data(sbar) set]

    # Initializes the max icon/text width and height and other variables
    #
    set data(maxIW) 1
    set data(maxIH) 1
    set data(maxTW) 1
    set data(maxTH) 1
    set data(numItems) 0
    set data(curItem)  {}
    set data(noScroll) 1

    # Creates the event bindings.
    #
    bind $data(canvas) <Configure>    [list tkIconList_Arrange $w]

    bind $data(canvas) <1>        [list tkIconList_Btn1 $w %x %y]
    bind $data(canvas) <B1-Motion>    [list tkIconList_Motion1 $w %x %y]
    bind $data(canvas) <B1-Leave>    [list tkIconList_Leave1 $w %x %y]
    bind $data(canvas) <B1-Enter>    [list tkCancelRepeat]
    bind $data(canvas) <ButtonRelease-1> [list tkCancelRepeat]
    bind $data(canvas) <Double-ButtonRelease-1> \
        [list tkIconList_Double1 $w %x %y]

    bind $data(canvas) <Up>        [list tkIconList_UpDown $w -1]
    bind $data(canvas) <Down>        [list tkIconList_UpDown $w  1]
    bind $data(canvas) <Left>        [list tkIconList_LeftRight $w -1]
    bind $data(canvas) <Right>        [list tkIconList_LeftRight $w  1]
    bind $data(canvas) <Return>        [list tkIconList_ReturnKey $w]
    bind $data(canvas) <KeyPress>    [list tkIconList_KeyPress $w %A]
    bind $data(canvas) <Control-KeyPress> ";"
    bind $data(canvas) <Alt-KeyPress>    ";"

    bind $data(canvas) <FocusIn>    [list tkIconList_FocusIn $w]

    return $w
}

# tkIconList_AutoScan --
#
# This procedure is invoked when the mouse leaves an entry window
# with button 1 down.  It scrolls the window up, down, left, or
# right, depending on where the mouse left the window, and reschedules
# itself as an "after" command so that the window continues to scroll until
# the mouse moves back into the window or the mouse button is released.
#
# Arguments:
# w -        The IconList window.
#
proc tkIconList_AutoScan {w} {
    upvar #0 $w data
    global tkPriv

    if {![winfo exists $w]} return
    set x $tkPriv(x)
    set y $tkPriv(y)

    if {$data(noScroll)} {
    return
    }
    if {$x >= [winfo width $data(canvas)]} {
    $data(canvas) xview scroll 1 units
    } elseif {$x < 0} {
    $data(canvas) xview scroll -1 units
    } elseif {$y >= [winfo height $data(canvas)]} {
    # do nothing
    } elseif {$y < 0} {
    # do nothing
    } else {
    return
    }

    tkIconList_Motion1 $w $x $y
    set tkPriv(afterId) [after 50 [list tkIconList_AutoScan $w]]
}

# Deletes all the items inside the canvas subwidget and reset the IconList's
# state.
#
proc tkIconList_DeleteAll {w} {
    upvar #0 $w data
    upvar #0 $w:itemList itemList

    $data(canvas) delete all
    catch {unset data(selected)}
    catch {unset data(rect)}
    catch {unset data(list)}
    catch {unset itemList}
    set data(maxIW) 1
    set data(maxIH) 1
    set data(maxTW) 1
    set data(maxTH) 1
    set data(numItems) 0
    set data(curItem)  {}
    set data(noScroll) 1
    $data(sbar) set 0.0 1.0
    $data(canvas) xview moveto 0
}

# Adds an icon into the IconList with the designated image and text
#
proc tkIconList_Add {w image text} {
    upvar #0 $w data
    upvar #0 $w:itemList itemList
    upvar #0 $w:textList textList

    set iTag [$data(canvas) create image 0 0 -image $image -anchor nw]
    set tTag [$data(canvas) create text  0 0 -text  $text  -anchor nw \
    -font $data(font)]
    set rTag [$data(canvas) create rect  0 0 0 0 -fill "" -outline ""]

    set b [$data(canvas) bbox $iTag]
    set iW [expr {[lindex $b 2]-[lindex $b 0]}]
    set iH [expr {[lindex $b 3]-[lindex $b 1]}]
    if {$data(maxIW) < $iW} {
    set data(maxIW) $iW
    }
    if {$data(maxIH) < $iH} {
    set data(maxIH) $iH
    }

    set b [$data(canvas) bbox $tTag]
    set tW [expr {[lindex $b 2]-[lindex $b 0]}]
    set tH [expr {[lindex $b 3]-[lindex $b 1]}]
    if {$data(maxTW) < $tW} {
    set data(maxTW) $tW
    }
    if {$data(maxTH) < $tH} {
    set data(maxTH) $tH
    }

    lappend data(list) [list $iTag $tTag $rTag $iW $iH $tW $tH $data(numItems)]
    set itemList($rTag) [list $iTag $tTag $text $data(numItems)]
    set textList($data(numItems)) [string tolower $text]
    incr data(numItems)
}

# Places the icons in a column-major arrangement.
#
proc tkIconList_Arrange {w} {
    upvar #0 $w data

    if {![info exists data(list)]} {
    if {[info exists data(canvas)] && [winfo exists $data(canvas)]} {
        set data(noScroll) 1
        $data(sbar) config -command ""
    }
    return
    }

    set W [winfo width  $data(canvas)]
    set H [winfo height $data(canvas)]
    set pad [expr {[$data(canvas) cget -highlightthickness] + \
        [$data(canvas) cget -bd]}]
    if {$pad < 2} {
    set pad 2
    }

    incr W -[expr {$pad*2}]
    incr H -[expr {$pad*2}]

    set dx [expr {$data(maxIW) + $data(maxTW) + 8}]
    if {$data(maxTH) > $data(maxIH)} {
    set dy $data(maxTH)
    } else {
    set dy $data(maxIH)
    }
    incr dy 2
    set shift [expr {$data(maxIW) + 4}]

    set x [expr {$pad * 2}]
    set y [expr {$pad * 1}] ; # Why * 1 ?
    set usedColumn 0
    foreach sublist $data(list) {
    set usedColumn 1
    set iTag [lindex $sublist 0]
    set tTag [lindex $sublist 1]
    set rTag [lindex $sublist 2]
    set iW   [lindex $sublist 3]
    set iH   [lindex $sublist 4]
    set tW   [lindex $sublist 5]
    set tH   [lindex $sublist 6]

    set i_dy [expr {($dy - $iH)/2}]
    set t_dy [expr {($dy - $tH)/2}]

    $data(canvas) coords $iTag $x                    [expr {$y + $i_dy}]
    $data(canvas) coords $tTag [expr {$x + $shift}]  [expr {$y + $t_dy}]
    $data(canvas) coords $tTag [expr {$x + $shift}]  [expr {$y + $t_dy}]
    $data(canvas) coords $rTag $x $y [expr {$x+$dx}] [expr {$y+$dy}]

    incr y $dy
    if {($y + $dy) > $H} {
        set y [expr {$pad * 1}] ; # *1 ?
        incr x $dx
        set usedColumn 0
    }
    }

    if {$usedColumn} {
    set sW [expr {$x + $dx}]
    } else {
    set sW $x
    }

    if {$sW < $W} {
    $data(canvas) config -scrollregion [list $pad $pad $sW $H]
    $data(sbar) config -command ""
    $data(canvas) xview moveto 0
    set data(noScroll) 1
    } else {
    $data(canvas) config -scrollregion [list $pad $pad $sW $H]
    $data(sbar) config -command [list $data(canvas) xview]
    set data(noScroll) 0
    }

    set data(itemsPerColumn) [expr {($H-$pad)/$dy}]
    if {$data(itemsPerColumn) < 1} {
    set data(itemsPerColumn) 1
    }

    if {$data(curItem) != ""} {
    tkIconList_Select $w [lindex [lindex $data(list) $data(curItem)] 2] 0
    }
}

# Gets called when the user invokes the IconList (usually by double-clicking
# or pressing the Return key).
#
proc tkIconList_Invoke {w} {
    upvar #0 $w data

    if {$data(-command) != "" && [info exists data(selected)]} {
    uplevel #0 $data(-command)
    }
}

# tkIconList_See --
#
#    If the item is not (completely) visible, scroll the canvas so that
#    it becomes visible.
proc tkIconList_See {w rTag} {
    upvar #0 $w data
    upvar #0 $w:itemList itemList

    if {$data(noScroll)} {
    return
    }
    set sRegion [$data(canvas) cget -scrollregion]
    if {[string equal $sRegion {}]} {
    return
    }

    if {![info exists itemList($rTag)]} {
    return
    }


    set bbox [$data(canvas) bbox $rTag]
    set pad [expr {[$data(canvas) cget -highlightthickness] + \
        [$data(canvas) cget -bd]}]

    set x1 [lindex $bbox 0]
    set x2 [lindex $bbox 2]
    incr x1 -[expr {$pad * 2}]
    incr x2 -[expr {$pad * 1}] ; # *1 ?

    set cW [expr {[winfo width $data(canvas)] - $pad*2}]

    set scrollW [expr {[lindex $sRegion 2]-[lindex $sRegion 0]+1}]
    set dispX [expr {int([lindex [$data(canvas) xview] 0]*$scrollW)}]
    set oldDispX $dispX

    # check if out of the right edge
    #
    if {($x2 - $dispX) >= $cW} {
    set dispX [expr {$x2 - $cW}]
    }
    # check if out of the left edge
    #
    if {($x1 - $dispX) < 0} {
    set dispX $x1
    }

    if {$oldDispX != $dispX} {
    set fraction [expr {double($dispX)/double($scrollW)}]
    $data(canvas) xview moveto $fraction
    }
}

proc tkIconList_SelectAtXY {w x y} {
    upvar #0 $w data

    tkIconList_Select $w [$data(canvas) find closest \
        [$data(canvas) canvasx $x] [$data(canvas) canvasy $y]]
}

proc tkIconList_Select {w rTag {callBrowse 1}} {
    upvar #0 $w data
    upvar #0 $w:itemList itemList

    if {![info exists itemList($rTag)]} {
    return
    }
    set iTag   [lindex $itemList($rTag) 0]
    set tTag   [lindex $itemList($rTag) 1]
    set text   [lindex $itemList($rTag) 2]
    set serial [lindex $itemList($rTag) 3]

    if {![info exists data(rect)]} {
        set data(rect) [$data(canvas) create rect 0 0 0 0 \
        -fill #a0a0ff -outline #a0a0ff]
    }
    $data(canvas) lower $data(rect)
    set bbox [$data(canvas) bbox $tTag]
    eval [list $data(canvas) coords $data(rect)] $bbox

    set data(curItem) $serial
    set data(selected) $text

    if {$callBrowse && $data(-browsecmd) != ""} {
    eval $data(-browsecmd) [list $text]
    }
}

proc tkIconList_Unselect {w} {
    upvar #0 $w data

    if {[info exists data(rect)]} {
    $data(canvas) delete $data(rect)
    unset data(rect)
    }
    if {[info exists data(selected)]} {
    unset data(selected)
    }
    #set data(curItem)  {}
}

# Returns the selected item
#
proc tkIconList_Get {w} {
    upvar #0 $w data

    if {[info exists data(selected)]} {
    return $data(selected)
    } else {
    return ""
    }
}


proc tkIconList_Btn1 {w x y} {
    upvar #0 $w data

    focus $data(canvas)
    tkIconList_SelectAtXY $w $x $y
}

# Gets called on button-1 motions
#
proc tkIconList_Motion1 {w x y} {
    global tkPriv
    set tkPriv(x) $x
    set tkPriv(y) $y

    tkIconList_SelectAtXY $w $x $y
}

proc tkIconList_Double1 {w x y} {
    upvar #0 $w data

    if {[string compare $data(curItem) {}]} {
    tkIconList_Invoke $w
    }
}

proc tkIconList_ReturnKey {w} {
    tkIconList_Invoke $w
}

proc tkIconList_Leave1 {w x y} {
    global tkPriv

    set tkPriv(x) $x
    set tkPriv(y) $y
    tkIconList_AutoScan $w
}

proc tkIconList_FocusIn {w} {
    upvar #0 $w data

    if {![info exists data(list)]} {
    return
    }

    if {[string compare $data(curItem) {}]} {
    tkIconList_Select $w [lindex [lindex $data(list) $data(curItem)] 2] 1
    }
}

# tkIconList_UpDown --
#
# Moves the active element up or down by one element
#
# Arguments:
# w -        The IconList widget.
# amount -    +1 to move down one item, -1 to move back one item.
#
proc tkIconList_UpDown {w amount} {
    upvar #0 $w data

    if {![info exists data(list)]} {
    return
    }

    if {[string equal $data(curItem) {}]} {
    set rTag [lindex [lindex $data(list) 0] 2]
    } else {
    set oldRTag [lindex [lindex $data(list) $data(curItem)] 2]
    set rTag [lindex [lindex $data(list) [expr {$data(curItem)+$amount}]] 2]
    if {[string equal $rTag ""]} {
        set rTag $oldRTag
    }
    }

    if {[string compare $rTag ""]} {
    tkIconList_Select $w $rTag
    tkIconList_See $w $rTag
    }
}

# tkIconList_LeftRight --
#
# Moves the active element left or right by one column
#
# Arguments:
# w -        The IconList widget.
# amount -    +1 to move right one column, -1 to move left one column.
#
proc tkIconList_LeftRight {w amount} {
    upvar #0 $w data

    if {![info exists data(list)]} {
    return
    }
    if {[string equal $data(curItem) {}]} {
    set rTag [lindex [lindex $data(list) 0] 2]
    } else {
    set oldRTag [lindex [lindex $data(list) $data(curItem)] 2]
    set newItem [expr {$data(curItem)+($amount*$data(itemsPerColumn))}]
    set rTag [lindex [lindex $data(list) $newItem] 2]
    if {[string equal $rTag ""]} {
        set rTag $oldRTag
    }
    }

    if {[string compare $rTag ""]} {
    tkIconList_Select $w $rTag
    tkIconList_See $w $rTag
    }
}

#----------------------------------------------------------------------
#        Accelerator key bindings
#----------------------------------------------------------------------

# tkIconList_KeyPress --
#
#    Gets called when user enters an arbitrary key in the listbox.
#
proc tkIconList_KeyPress {w key} {
    global tkPriv

    append tkPriv(ILAccel,$w) $key
    tkIconList_Goto $w $tkPriv(ILAccel,$w)
    catch {
    after cancel $tkPriv(ILAccel,$w,afterId)
    }
    set tkPriv(ILAccel,$w,afterId) [after 500 [list tkIconList_Reset $w]]
}

proc tkIconList_Goto {w text} {
    upvar #0 $w data
    upvar #0 $w:textList textList
    global tkPriv

    if {![info exists data(list)]} {
    return
    }

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

    if {$data(curItem) == "" || $data(curItem) == 0} {
    set start  0
    } else {
    set start  $data(curItem)
    }

    set text [string tolower $text]
    set theIndex -1
    set less 0
    set len [string length $text]
    set len0 [expr {$len-1}]
    set i $start

    # Search forward until we find a filename whose prefix is an exact match
    # with $text
    while {1} {
    set sub [string range $textList($i) 0 $len0]
    if {[string equal $text $sub]} {
        set theIndex $i
        break
    }
    incr i
    if {$i == $data(numItems)} {
        set i 0
    }
    if {$i == $start} {
        break
    }
    }

    if {$theIndex > -1} {
    set rTag [lindex [lindex $data(list) $theIndex] 2]
    tkIconList_Select $w $rTag
    tkIconList_See $w $rTag
    }
}

proc tkIconList_Reset {w} {
    global tkPriv

    catch {unset tkPriv(ILAccel,$w)}
}

#----------------------------------------------------------------------
#
#              F I L E   D I A L O G
#
#----------------------------------------------------------------------

namespace eval ::tk::dialog {}
namespace eval ::tk::dialog::file {}

# ::tk::dialog::file::tkFDialog --
#
#    Implements the TK file selection dialog. This dialog is used when
#    the tk_strictMotif flag is set to false. This procedure shouldn't
#    be called directly. Call tk_getOpenFile or tk_getSaveFile instead.
#
# Arguments:
#    type        "open" or "save"
#    args        Options parsed by the procedure.
#

proc ::tk::dialog::file::tkFDialog {type args} {
    global tkPriv
    set dataName __tk_filedialog
    upvar ::tk::dialog::file::$dataName data

    ::tk::dialog::file::Config $dataName $type $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 TkFDialog
    } elseif {[string compare [winfo class $w] TkFDialog]} {
    destroy $w
    ::tk::dialog::file::Create $w TkFDialog
    } 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(typeMenuLab) $w.f3.lab
    set data(typeMenuBtn) $w.f3.menu
    set data(typeMenu) $data(typeMenuBtn).m
    set data(okBtn) $w.f2.ok
    set data(cancelBtn) $w.f3.cancel
    }
    wm transient $w $data(-parent)

    # Add traces on the selectPath variable
    #

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

    # Initialize the file types menu
    #
    if {[llength $data(-filetypes)]} {
    $data(typeMenu) delete 0 end
    foreach type $data(-filetypes) {
        set title  [lindex $type 0]
        set filter [lindex $type 1]
        $data(typeMenu) add command -label $title \
        -command [list ::tk::dialog::file::SetFilter $w $type]
    }
    ::tk::dialog::file::SetFilter $w [lindex $data(-filetypes) 0]
    $data(typeMenuBtn) config -state normal
    $data(typeMenuLab) config -state normal
    } else {
    set data(filter) "*"
    $data(typeMenuBtn) config -state disabled -takefocus 0
    $data(typeMenuLab) config -state disabled
    }
    ::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(selectFile)
    $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 $tkPriv(selectFilePath)
}

# ::tk::dialog::file::Config --
#
#    Configures the TK filedialog according to the argument list
#
proc ::tk::dialog::file::Config {dataName type argList} {
    upvar ::tk::dialog::file::$dataName data

    set data(type) $type

    # 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 {
    {-defaultextension "" "" ""}
    {-filetypes "" "" ""}
    {-initialdir "" "" ""}
    {-initialfile "" "" ""}
    {-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]
    set data(selectFile) ""
    }

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

    if {$data(-title) == ""} {
    if {[string equal $type "open"]} {
        set data(-title) "Open"
    } else {
        set data(-title) "Save As"
    }
    }

    # 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]
    }
    }
    set data(selectFile) $data(-initialfile)

    # 5. Parse the -filetypes option
    #
    set data(-filetypes) [tkFDGetFileTypes $data(-filetypes)]

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

proc ::tk::dialog::file::Create {w class} {
    set dataName [lindex [split $w .] end]
    upvar ::tk::dialog::file::$dataName data
    global tk_library tkPriv

    toplevel $w -class $class

    # f1: the frame with the directory option menu
    #
    set f1 [frame $w.f1]
    label $f1.lab -text "Directory:" -under 0
    set data(dirMenuBtn) $f1.menu
    set data(dirMenu) [tk_optionMenu $f1.menu [format %s(selectPath) ::tk::dialog::file::$dataName] ""]
    set data(upBtn) [button $f1.up]
    if {![info exists tkPriv(updirImage)]} {
    set tkPriv(updirImage) [image create bitmap -data {
#define updir_width 28
#define updir_height 16
static char updir_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x80, 0x1f, 0x00, 0x00, 0x40, 0x20, 0x00, 0x00,
   0x20, 0x40, 0x00, 0x00, 0xf0, 0xff, 0xff, 0x01, 0x10, 0x00, 0x00, 0x01,
   0x10, 0x02, 0x00, 0x01, 0x10, 0x07, 0x00, 0x01, 0x90, 0x0f, 0x00, 0x01,
   0x10, 0x02, 0x00, 0x01, 0x10, 0x02, 0x00, 0x01, 0x10, 0x02, 0x00, 0x01,
   0x10, 0xfe, 0x07, 0x01, 0x10, 0x00, 0x00, 0x01, 0x10, 0x00, 0x00, 0x01,
   0xf0, 0xff, 0xff, 0x01};}]
    }
    $data(upBtn) config -image $tkPriv(updirImage)

    $f1.menu config -takefocus 1 -highlightthickness 2

    pack $data(upBtn) -side right -padx 4 -fill both
    pack $f1.lab -side left -padx 4 -fill both
    pack $f1.menu -expand yes -fill both -padx 4

    # data(icons): the IconList that list the files and directories.
    #
    if { [string equal $class TkFDialog] } {
    set fNameCaption "File name:"
    set fNameUnder 5
    set iconListCommand [list ::tk::dialog::file::OkCmd $w]
    } else {
    set fNameCaption "Selection:"
    set fNameUnder 0
    set iconListCommand [list ::tk::dialog::file::chooseDir::DblClick $w]
    }
    set data(icons) [tkIconList $w.icons \
    -browsecmd [list ::tk::dialog::file::ListBrowse $w] \
    -command   $iconListCommand]

    # f2: the frame with the OK button and the "file name" field
    #
    set f2 [frame $w.f2 -bd 0]
    label $f2.lab -text $fNameCaption -anchor e -width 14 \
        -under $fNameUnder -pady 0
    set data(ent) [entry $f2.ent]

    # The font to use for the icons. The default Canvas font on Unix
    # is just deviant.
    global $w.icons
    set $w.icons(font) [$data(ent) cget -font]

    # f3: the frame with the cancel button and the file types field
    #
    set f3 [frame $w.f3 -bd 0]

    # Make the file types bits only if this is a File Dialog
    if { [string equal $class TkFDialog] } {
    # The "File of types:" label needs to be grayed-out when
    # -filetypes are not specified. The label widget does not support
    # grayed-out text on monochrome displays. Therefore, we have to
    # use a button widget to emulate a label widget (by setting its
    # bindtags)

    set data(typeMenuLab) [button $f3.lab -text "Files of type:" \
        -anchor e -width 14 -under 9 \
        -bd [$f2.lab cget -bd] \
        -highlightthickness [$f2.lab cget -highlightthickness] \
        -relief [$f2.lab cget -relief] \
        -padx [$f2.lab cget -padx] \
        -pady [$f2.lab cget -pady]]
    bindtags $data(typeMenuLab) [list $data(typeMenuLab) Label \
        [winfo toplevel $data(typeMenuLab)] all]

    set data(typeMenuBtn) [menubutton $f3.menu -indicatoron 1 \
        -menu $f3.menu.m]
    set data(typeMenu) [menu $data(typeMenuBtn).m -tearoff 0]
    $data(typeMenuBtn) config -takefocus 1 -highlightthickness 2 \
        -relief raised -bd 2 -anchor w
    }

    # the okBtn is created after the typeMenu so that the keyboard traversal
    # is in the right order
    set data(okBtn)     [button $f2.ok     -text OK     -under 0 -width 6 \
    -default active -pady 3]
    set data(cancelBtn) [button $f3.cancel -text Cancel -under 0 -width 6\
    -default normal -pady 3]

    # pack the widgets in f2 and f3
    #
    pack $data(okBtn) -side right -padx 4 -anchor e
    pack $f2.lab -side left -padx 4
    pack $f2.ent -expand yes -fill x -padx 2 -pady 0

    pack $data(cancelBtn) -side right -padx 4 -anchor w
    if { [string equal $class TkFDialog] } {
    pack $data(typeMenuLab) -side left -padx 4
    pack $data(typeMenuBtn) -expand yes -fill x -side right
    }

    # Pack all the frames together. We are done with widget construction.
    #
    pack $f1 -side top -fill x -pady 4
    pack $f3 -side bottom -fill x
    pack $f2 -side bottom -fill x
    pack $data(icons) -expand yes -fill both -padx 4 -pady 1

    # Set up the event handlers that are common to Directory and File Dialogs
    #

    wm protocol $w WM_DELETE_WINDOW [list ::tk::dialog::file::CancelCmd $w]
    $data(upBtn)     config -command [list ::tk::dialog::file::UpDirCmd $w]
    $data(cancelBtn) config -command [list ::tk::dialog::file::CancelCmd $w]
    bind $w <KeyPress-Escape> [list tkButtonInvoke $data(cancelBtn)]
    bind $w <Alt-c> [list tkButtonInvoke $data(cancelBtn)]
    bind $w <Alt-d> [list focus $data(dirMenuBtn)]

    # Set up event handlers specific to File or Directory Dialogs
    #

    if { [string equal $class TkFDialog] } {
    bind $data(ent) <Return> [list ::tk::dialog::file::ActivateEnt $w]
    $data(okBtn)     config -command [list ::tk::dialog::file::OkCmd $w]
    bind $w <Alt-t> [format {
        if {[string equal [%s cget -state] "normal"]} {
        focus %s
        }
    } $data(typeMenuBtn) $data(typeMenuBtn)]
    bind $w <Alt-n> [list focus $data(ent)]
    bind $w <Alt-o> [list ::tk::dialog::file::InvokeBtn $w Open]
    bind $w <Alt-s> [list ::tk::dialog::file::InvokeBtn $w Save]
    } else {
    set okCmd [list ::tk::dialog::file::chooseDir::OkCmd $w]
    bind $data(ent) <Return> $okCmd
    $data(okBtn) config -command $okCmd
    bind $w <Alt-s> [list focus $data(ent)]
    bind $w <Alt-o> [list tkButtonInvoke $data(okBtn)]
    }

    # Build the focus group for all the entries
    #
    tkFocusGroup_Create $w
    tkFocusGroup_BindIn $w  $data(ent) [list ::tk::dialog::file::EntFocusIn $w]
    tkFocusGroup_BindOut $w $data(ent) [list ::tk::dialog::file::EntFocusOut $w]
}

# ::tk::dialog::file::UpdateWhenIdle --
#
#    Creates an idle event handler which updates the dialog in idle
#    time. This is important because loading the directory may take a long
#    time and we don't want to load the same directory for multiple times
#    due to multiple concurrent events.
#
proc ::tk::dialog::file::UpdateWhenIdle {w} {
    upvar ::tk::dialog::file::[winfo name $w] data

    if {[info exists data(updateId)]} {
    return
    } else {
    set data(updateId) [after idle [list ::tk::dialog::file::Update $w]]
    }
}

# ::tk::dialog::file::Update --
#
#    Loads the files and directories into the IconList widget. Also
#    sets up the directory option menu for quick access to parent
#    directories.
#
proc ::tk::dialog::file::Update {w} {

    # This proc may be called within an idle handler. Make sure that the
    # window has not been destroyed before this proc is called
    if {![winfo exists $w]} {
    return
    }
    set class [winfo class $w]
    if { [string compare $class TkFDialog] && \
        [string compare $class TkChooseDir] } {
    return
    }

    set dataName [winfo name $w]
    upvar ::tk::dialog::file::$dataName data
    global tk_library tkPriv
    catch {unset data(updateId)}

    if {![info exists tkPriv(folderImage)]} {
    set tkPriv(folderImage) [image create photo -data {
R0lGODlhEAAMAKEAAAD//wAAAPD/gAAAACH5BAEAAAAALAAAAAAQAAwAAAIghINhyycvVFsB
QtmS3rjaH1Hg141WaT5ouprt2HHcUgAAOw==}]
    set tkPriv(fileImage)   [image create photo -data {
R0lGODlhDAAMAKEAALLA3AAAAP//8wAAACH5BAEAAAAALAAAAAAMAAwAAAIgRI4Ha+IfWHsO
rSASvJTGhnhcV3EJlo3kh53ltF5nAhQAOw==}]
    }
    set folder $tkPriv(folderImage)
    set file   $tkPriv(fileImage)

    set appPWD [pwd]
    if {[catch {
    cd $data(selectPath)
    }]} {
    # We cannot change directory to $data(selectPath). $data(selectPath)
    # should have been checked before ::tk::dialog::file::Update is called, so
    # we normally won't come to here. Anyways, give an error and abort
    # action.
    tk_messageBox -type ok -parent $w -message \
        "Cannot change to the directory \"$data(selectPath)\".\nPermission denied."\
        -icon warning
    cd $appPWD
    return
    }

    # Turn on the busy cursor. BUG?? We haven't disabled X events, though,
    # so the user may still click and cause havoc ...
    #
    set entCursor [$data(ent) cget -cursor]
    set dlgCursor [$w         cget -cursor]
    $data(ent) config -cursor watch
    $w         config -cursor watch
    update idletasks

    tkIconList_DeleteAll $data(icons)

    # Make the dir list
    #
    foreach f [lsort -dictionary [glob -nocomplain .* *]] {
    if {[string equal $f .]} {
        continue
    }
    if {[string equal $f ..]} {
        continue
    }
    if {[file isdir ./$f]} {
        if {![info exists hasDoneDir($f)]} {
        tkIconList_Add $data(icons) $folder $f
        set hasDoneDir($f) 1
        }
    }
    }
    if { [string equal $class TkFDialog] } {
    # Make the file list if this is a File Dialog
    #
    if {[string equal $data(filter) *]} {
        set files [lsort -dictionary \
            [glob -nocomplain .* *]]
    } else {
        set files [lsort -dictionary \
            [eval glob -nocomplain $data(filter)]]
    }

    foreach f $files {
        if {![file isdir ./$f]} {
        if {![info exists hasDoneFile($f)]} {
            tkIconList_Add $data(icons) $file $f
            set hasDoneFile($f) 1
        }
        }
    }
    }

    tkIconList_Arrange $data(icons)

    # Update the Directory: option menu
    #
    set list ""
    set dir ""
    foreach subdir [file split $data(selectPath)] {
    set dir [file join $dir $subdir]
    lappend list $dir
    }

    $data(dirMenu) delete 0 end
    set var [format %s(selectPath) ::tk::dialog::file::$dataName]
    foreach path $list {
    $data(dirMenu) add command -label $path -command [list set $var $path]
    }

    # Restore the PWD to the application's PWD
    #
    cd $appPWD

    if { [string equal $class TkFDialog] } {
    # Restore the Open/Save Button if this is a File Dialog
    #
    if {[string equal $data(type) open]} {
        $data(okBtn) config -text "Open"
    } else {
        $data(okBtn) config -text "Save"
    }
    }

    # turn off the busy cursor.
    #
    $data(ent) config -cursor $entCursor
    $w         config -cursor $dlgCursor
}

# ::tk::dialog::file::SetPathSilently --
#
#     Sets data(selectPath) without invoking the trace procedure
#
proc ::tk::dialog::file::SetPathSilently {w path} {
    upvar ::tk::dialog::file::[winfo name $w] data

    trace vdelete  data(selectPath) w [list ::tk::dialog::file::SetPath $w]
    set data(selectPath) $path
    trace variable data(selectPath) w [list ::tk::dialog::file::SetPath $w]
}


# This proc gets called whenever data(selectPath) is set
#
proc ::tk::dialog::file::SetPath {w name1 name2 op} {
    if {[winfo exists $w]} {
    upvar ::tk::dialog::file::[winfo name $w] data
    ::tk::dialog::file::UpdateWhenIdle $w
    # On directory dialogs, we keep the entry in sync with the currentdir.
    if { [string equal [winfo class $w] TkChooseDir] } {
        $data(ent) delete 0 end
        $data(ent) insert end $data(selectPath)
    }
    }
}

# This proc gets called whenever data(filter) is set
#
proc ::tk::dialog::file::SetFilter {w type} {
    upvar ::tk::dialog::file::[winfo name $w] data
    upvar \#0 $data(icons) icons

    set data(filter) [lindex $type 1]
    $data(typeMenuBtn) config -text [lindex $type 0] -indicatoron 1

    $icons(sbar) set 0.0 0.0

    ::tk::dialog::file::UpdateWhenIdle $w
}

# tk::dialog::file::ResolveFile --
#
#    Interpret the user's text input in a file selection dialog.
#    Performs:
#
#    (1) ~ substitution
#    (2) resolve all instances of . and ..
#    (3) check for non-existent files/directories
#    (4) check for chdir permissions
#
# Arguments:
#    context:  the current directory you are in
#    text:      the text entered by the user
#    defaultext: the default extension to add to files with no extension
#
# Return vaue:
#    [list $flag $directory $file]
#
#     flag = OK    : valid input
#          = PATTERN    : valid directory/pattern
#          = PATH    : the directory does not exist
#          = FILE    : the directory exists by the file doesn't
#              exist
#          = CHDIR    : Cannot change to the directory
#          = ERROR    : Invalid entry
#
#     directory      : valid only if flag = OK or PATTERN or FILE
#     file           : valid only if flag = OK or PATTERN
#
#    directory may not be the same as context, because text may contain
#    a subdirectory name
#
proc ::tk::dialog::file::ResolveFile {context text defaultext} {

    set appPWD [pwd]

    set path [::tk::dialog::file::JoinFile $context $text]

    # If the file has no extension, append the default.  Be careful not
    # to do this for directories, otherwise typing a dirname in the box
    # will give back "dirname.extension" instead of trying to change dir.
    if {![file isdirectory $path] && [string equal [file ext $path] ""]} {
    set path "$path$defaultext"
    }


    if {[catch {file exists $path}]} {
    # This "if" block can be safely removed if the following code
    # stop generating errors.
    #
    #    file exists ~nonsuchuser
    #
    return [list ERROR $path ""]
    }

    if {[file exists $path]} {
    if {[file isdirectory $path]} {
        if {[catch {cd $path}]} {
        return [list CHDIR $path ""]
        }
        set directory [pwd]
        set file ""
        set flag OK
        cd $appPWD
    } else {
        if {[catch {cd [file dirname $path]}]} {
        return [list CHDIR [file dirname $path] ""]
        }
        set directory [pwd]
        set file [file tail $path]
        set flag OK
        cd $appPWD
    }
    } else {
    set dirname [file dirname $path]
    if {[file exists $dirname]} {
        if {[catch {cd $dirname}]} {
        return [list CHDIR $dirname ""]
        }
        set directory [pwd]
        set file [file tail $path]
        if {[regexp {[*]|[?]} $file]} {
        set flag PATTERN
        } else {
        set flag FILE
        }
        cd $appPWD
    } else {
        set directory $dirname
        set file [file tail $path]
        set flag PATH
    }
    }

    return [list $flag $directory $file]
}


# Gets called when the entry box gets keyboard focus. We clear the selection
# from the icon list . This way the user can be certain that the input in the
# entry box is the selection.
#
proc ::tk::dialog::file::EntFocusIn {w} {
    upvar ::tk::dialog::file::[winfo name $w] data

    if {[string compare [$data(ent) get] ""]} {
    $data(ent) selection range 0 end
    $data(ent) icursor end
    } else {
    $data(ent) selection clear
    }

    tkIconList_Unselect $data(icons)

    if { [string equal [winfo class $w] TkFDialog] } {
    # If this is a File Dialog, make sure the buttons are labeled right.
    if {[string equal $data(type) open]} {
        $data(okBtn) config -text "Open"
    } else {
        $data(okBtn) config -text "Save"
    }
    }
}

proc ::tk::dialog::file::EntFocusOut {w} {
    upvar ::tk::dialog::file::[winfo name $w] data

    $data(ent) selection clear
}


# Gets called when user presses Return in the "File name" entry.
#
proc ::tk::dialog::file::ActivateEnt {w} {
    upvar ::tk::dialog::file::[winfo name $w] data

    set text [string trim [$data(ent) get]]
    set list [::tk::dialog::file::ResolveFile $data(selectPath) $text \
          $data(-defaultextension)]
    set flag [lindex $list 0]
    set path [lindex $list 1]
    set file [lindex $list 2]

    switch -- $flag {
    OK {
        if {[string equal $file ""]} {
        # user has entered an existing (sub)directory
        set data(selectPath) $path
        $data(ent) delete 0 end
        } else {
        ::tk::dialog::file::SetPathSilently $w $path
        set data(selectFile) $file
        ::tk::dialog::file::Done $w
        }
    }
    PATTERN {
        set data(selectPath) $path
        set data(filter) $file
    }
    FILE {
        if {[string equal $data(type) open]} {
        tk_messageBox -icon warning -type ok -parent $w \
            -message "File \"[file join $path $file]\" does not exist."
        $data(ent) selection range 0 end
        $data(ent) icursor end
        } else {
        ::tk::dialog::file::SetPathSilently $w $path
        set data(selectFile) $file
        ::tk::dialog::file::Done $w
        }
    }
    PATH {
        tk_messageBox -icon warning -type ok -parent $w \
        -message "Directory \"$path\" does not exist."
        $data(ent) selection range 0 end
        $data(ent) icursor end
    }
    CHDIR {
        tk_messageBox -type ok -parent $w -message \
           "Cannot change to the directory \"$path\".\nPermission denied."\
        -icon warning
        $data(ent) selection range 0 end
        $data(ent) icursor end
    }
    ERROR {
        tk_messageBox -type ok -parent $w -message \
           "Invalid file name \"$path\"."\
        -icon warning
        $data(ent) selection range 0 end
        $data(ent) icursor end
    }
    }
}

# Gets called when user presses the Alt-s or Alt-o keys.
#
proc ::tk::dialog::file::InvokeBtn {w key} {
    upvar ::tk::dialog::file::[winfo name $w] data

    if {[string equal [$data(okBtn) cget -text] $key]} {
    tkButtonInvoke $data(okBtn)
    }
}

# Gets called when user presses the "parent directory" button
#
proc ::tk::dialog::file::UpDirCmd {w} {
    upvar ::tk::dialog::file::[winfo name $w] data

    if {[string compare $data(selectPath) "/"]} {
    set data(selectPath) [file dirname $data(selectPath)]
    }
}

# Join a file name to a path name. The "file join" command will break
# if the filename begins with ~
#
proc ::tk::dialog::file::JoinFile {path file} {
    if {[string match {~*} $file] && [file exists $path/$file]} {
    return [file join $path ./$file]
    } else {
    return [file join $path $file]
    }
}



# Gets called when user presses the "OK" button
#
proc ::tk::dialog::file::OkCmd {w} {
    upvar ::tk::dialog::file::[winfo name $w] data

    set text [tkIconList_Get $data(icons)]
    if {[string compare $text ""]} {
    set file [::tk::dialog::file::JoinFile $data(selectPath) $text]
    if {[file isdirectory $file]} {
        ::tk::dialog::file::ListInvoke $w $text
        return
    }
    }

    ::tk::dialog::file::ActivateEnt $w
}

# Gets called when user presses the "Cancel" button
#
proc ::tk::dialog::file::CancelCmd {w} {
    upvar ::tk::dialog::file::[winfo name $w] data
    global tkPriv

    set tkPriv(selectFilePath) ""
}

# Gets called when user browses the IconList widget (dragging mouse, arrow
# keys, etc)
#
proc ::tk::dialog::file::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]
    if {![file isdirectory $file]} {
    $data(ent) delete 0 end
    $data(ent) insert 0 $text

    if { [string equal [winfo class $w] TkFDialog] } {
        if {[string equal $data(type) open]} {
        $data(okBtn) config -text "Open"
        } else {
        $data(okBtn) config -text "Save"
        }
    }
    } else {
    if { [string equal [winfo class $w] TkFDialog] } {
        $data(okBtn) config -text "Open"
    }
    }
}

# Gets called when user invokes the IconList widget (double-click,
# Return key, etc)
#
proc ::tk::dialog::file::ListInvoke {w text} {
    upvar ::tk::dialog::file::[winfo name $w] data

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

    set file [::tk::dialog::file::JoinFile $data(selectPath) $text]
    set class [winfo class $w]
    if {[string equal $class TkChooseDir] || [file isdirectory $file]} {
    set appPWD [pwd]
    if {[catch {cd $file}]} {
        tk_messageBox -type ok -parent $w -message \
           "Cannot change to the directory \"$file\".\nPermission denied."\
        -icon warning
    } else {
        cd $appPWD
        set data(selectPath) $file
    }
    } else {
    set data(selectFile) $file
    ::tk::dialog::file::Done $w
    }
}

# ::tk::dialog::file::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 tkFDialog and return the selected filename to the
#    script that calls tk_getOpenFile or tk_getSaveFile
#
proc ::tk::dialog::file::Done {w {selectFilePath ""}} {
    upvar ::tk::dialog::file::[winfo name $w] data
    global tkPriv

    if {[string equal $selectFilePath ""]} {
    set selectFilePath [::tk::dialog::file::JoinFile $data(selectPath) \
        $data(selectFile)]
    set tkPriv(selectFile)     $data(selectFile)
    set tkPriv(selectPath)     $data(selectPath)

    if {[file exists $selectFilePath] && [string equal $data(type) save]} {
        set reply [tk_messageBox -icon warning -type yesno\
            -parent $w -message "File\
            \"$selectFilePath\" already exists.\nDo\
            you want to overwrite it?"]
        if {[string equal $reply "no"]} {
        return
        }
    }
    }
    set tkPriv(selectFilePath) $selectFilePath
}