archie/tk4.2/library/tkfbox.tcl
2024-05-27 16:40:40 +02:00

1363 lines
33 KiB
Tcl

# 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.
#
# SCCS: @(#) tkfbox.tcl 1.4 96/08/28 22:17:21
#
# Copyright (c) 1994-1996 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
$data(sbar) config -command "$data(canvas) xview"
$data(canvas) config -xscrollcommand "$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> "tkIconList_Arrange $w"
bind $data(canvas) <1> "tkIconList_Btn1 $w %x %y"
bind $data(canvas) <B1-Motion> "tkIconList_Motion1 $w %x %y"
bind $data(canvas) <Double-1> "tkIconList_Double1 $w %x %y"
bind $data(canvas) <ButtonRelease-1> "tkCancelRepeat"
bind $data(canvas) <B1-Leave> "tkIconList_Leave1 $w %x %y"
bind $data(canvas) <B1-Enter> "tkCancelRepeat"
bind $data(canvas) <Up> "tkIconList_UpDown $w -1"
bind $data(canvas) <Down> "tkIconList_UpDown $w 1"
bind $data(canvas) <Left> "tkIconList_LeftRight $w -1"
bind $data(canvas) <Right> "tkIconList_LeftRight $w 1"
bind $data(canvas) <Return> "tkIconList_ReturnKey $w"
bind $data(canvas) <KeyPress> "tkIconList_KeyPress $w %A"
bind $data(canvas) <Control-KeyPress> ";"
bind $data(canvas) <Alt-KeyPress> ";"
bind $data(canvas) <FocusIn> "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 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(numItems) 0
set data(curItem) {}
}
# 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 $text -anchor nw]
set rTag [$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]]
incr W -[expr $pad*2]
incr H -[expr $pad*2]
set dx [expr $data(maxIW) + $data(maxTW) + 4]
if {$data(maxTH) > $data(maxIH)} {
set dy $data(maxTH)
} else {
set dy $data(maxIH)
}
set shift [expr $data(maxIW) + 4]
set x [expr $pad * 2]
set y [expr $pad * 1]
set usedColumn 0
foreach pair $data(list) {
set usedColumn 1
set iTag [lindex $pair 0]
set tTag [lindex $pair 1]
set rTag [lindex $pair 2]
set iW [lindex $pair 3]
set iH [lindex $pair 4]
set tW [lindex $pair 5]
set tH [lindex $pair 6]
set i_dy [expr ($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 {[expr $y + $dy] >= $H} {
set y [expr $pad * 1]
incr x $dx
set usedColumn 0
}
}
if {$usedColumn} {
set sW [expr $x + $dx]
} else {
set sW $x
}
if {$sW < $W} {
$data(canvas) config -scrollregion "$pad $pad $sW $H"
$data(sbar) config -command ""
$data(canvas) xview moveto 0
set data(noScroll) 1
} else {
$data(canvas) config -scrollregion "$pad $pad $sW $H"
$data(sbar) config -command "$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 {[string compare $data(-command) ""] && [info exists data(selected)]} {
eval $data(-command) [list $data(selected)]
}
}
# 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 compare $sRegion {}] {
return
}
if ![info exists itemList($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]
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 {[expr $x2 - $dispX] >= $cW} {
set dispX [expr $x2 - $cW]
}
# check if out of the left edge
#
if {[expr $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 $data(canvas) coords $data(rect) $bbox
set data(curItem) $serial
set data(selected) $text
if {$callBrowse} {
if [string compare $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 $w data
if {$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 $w data
if ![info exists data(list)] {
return
}
if {$data(curItem) == {}} {
set rTag [lindex [lindex $data(list) 0] 2]
tkIconList_Select $w $rTag
}
}
# 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 $w data
if ![info exists data(list)] {
return
}
if {$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 compare $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 $w data
if ![info exists data(list)] {
return
}
if {$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 compare $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 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 length $text] == 0} {
return
}
if {$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 compare $text $sub] == 0} {
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 0
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
#
#----------------------------------------------------------------------
# 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.
#
proc tkFDialog {args} {
global tkPriv
set w .__tk_filedialog
upvar #0 $w data
if ![string compare [lindex [info level 0] 0] tk_getOpenFile] {
set type open
} else {
set type save
}
tkFDialog_Config $w $type $args
# (re)create the dialog box if necessary
#
if {![winfo exists $w]} {
tkFDialog_Create $w
} elseif {[string compare [winfo class $w] TkFDialog]} {
destroy $w
tkFDialog_Create $w
}
wm transient $w $data(-parent)
# 5. Initialize the file types menu
#
if {$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 tkFDialog_SetFilter $w $type]
}
tkFDialog_SetFilter $w [lindex $data(-filetypes) 0]
$data(typeMenuBtn) config -state normal
$data(typeMenuLab) config -fg [$data(typeMenuBtn) cget -fg]
} else {
set data(filter) "*"
$data(typeMenuBtn) config -state disabled
$data(typeMenuLab) config -fg \
[$data(typeMenuBtn) cget -disabledforeground]
}
tkFDialog_UpdateWhenIdle $w
# 6. 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.
wm withdraw $w
update idletasks
set x [expr [winfo screenwidth $w]/2 - [winfo reqwidth $w]/2 \
- [winfo vrootx [winfo parent $w]]]
set y [expr [winfo screenheight $w]/2 - [winfo reqheight $w]/2 \
- [winfo vrooty [winfo parent $w]]]
wm geom $w [winfo reqwidth $w]x[winfo reqheight $w]+$x+$y
wm deiconify $w
wm title $w $data(-title)
# 7. Set a grab and claim the focus too.
set oldFocus [focus]
set oldGrab [grab current $w]
if {$oldGrab != ""} {
set grabStatus [grab status $oldGrab]
}
grab $w
focus $data(ent)
$data(ent) delete 0 end
$data(ent) insert 0 $data(selectFile)
$data(ent) select from 0
$data(ent) select to end
$data(ent) icursor end
# 8. 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)
catch {focus $oldFocus}
grab release $w
wm withdraw $w
if {$oldGrab != ""} {
if {$grabStatus == "global"} {
grab -global $oldGrab
} else {
grab $oldGrab
}
}
return $tkPriv(selectFilePath)
}
# tkFDialog_Config --
#
# Configures the TK filedialog according to the argument list
#
proc tkFDialog_Config {w type argList} {
upvar #0 $w data
set data(type) $type
# 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 $w $specs "" $argList
if ![string compare $data(-title) ""] {
if ![string compare $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 [string compare $data(-initialdir) ""] {
if [file isdirectory $data(-initialdir)] {
set data(selectPath) [glob $data(-initialdir)]
} else {
error "\"$data(-initialdir)\" is not a valid directory"
}
}
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)\""
}
}
# Get image files from the library directory.
#
proc tkFDialog_GetImgFile {w file} {
global tk_library env
if [info exists tk_library] {
if [file exists [file join $tk_library $file]] {
return [file join $tk_library $file]
}
}
return $file
}
proc tkFDialog_Create {w} {
upvar #0 $w data
global tk_library
toplevel $w -class TkFDialog
set updir @[tkFDialog_GetImgFile $w updir.xbm]
# 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) $w] ""]
set data(upBtn) [button $f1.up -bitmap $updir]
$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.
#
set data(icons) [tkIconList $w.icons \
-browsecmd "tkFDialog_ListBrowse $w" \
-command "tkFDialog_ListInvoke $w"]
# f2: the frame with the OK button and the "file name" field
#
set f2 [frame $w.f2]
label $f2.lab -text "File name:" -anchor e -width 14 -under 6
set data(ent) [entry $f2.ent]
# f3: the frame with the cancel button and the file types field
#
set f3 [frame $w.f3]
set data(typeMenuLab) [label $f3.lab -text "Files of type:" \
-anchor e -width 14 -under 9]
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]
set data(cancelBtn) [button $f3.cancel -text Cancel -under 0 -width 6]
# 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 both -padx 2 -pady 2
pack $data(cancelBtn) -side right -padx 4 -anchor w
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 2
# Set up the event handlers
#
bind $data(ent) <Return> "tkFDialog_ActivateEnt $w"
$data(upBtn) config -command "tkFDialog_UpDirCmd $w"
$data(okBtn) config -command "tkFDialog_OkCmd $w"
$data(cancelBtn) config -command "tkFDialog_CancelCmd $w"
trace variable data(selectPath) w "tkFDialog_SetPath $w"
bind $w <Alt-d> "focus $data(dirMenuBtn)"
bind $w <Alt-t> "focus $data(typeMenuBtn)"
bind $w <Alt-n> "focus $data(ent)"
bind $w <KeyPress-Escape> "tkButtonInvoke $data(cancelBtn)"
bind $w <Alt-o> "tkFDialog_InvokeBtn $w Open"
bind $w <Alt-s> "tkFDialog_InvokeBtn $w Save"
wm protocol $w WM_DELETE_WINDOW "tkFDialog_CancelCmd $w"
# Build the focus group for all the entries
#
tkFocusGroup_Create $w
tkFocusGroup_BindIn $w $data(ent) "tkFDialog_EntFocusIn $w"
tkFocusGroup_BindOut $w $data(ent) "tkFDialog_EntFocusOut $w"
}
# tkFDialog_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 tkFDialog_UpdateWhenIdle {w} {
upvar #0 $w data
if [info exists data(updateId)] {
return
} else {
set data(updateId) [after idle tkFDialog_Update $w]
}
}
# tkFDialog_Update --
#
# Loads the files and directories into the IconList widget. Also
# sets up the directory option menu for quick access to parent
# directories.
#
proc tkFDialog_Update {w} {
upvar #0 $w data
global tk_library tkPriv
# 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] || [string compare [winfo class $w] TkFDialog]} {
return
} else {
catch {unset data(updateId)}
}
set TRANSPARENT_GIF_COLOR [$w cget -bg]
if ![info exists tkPriv(folderImage)] {
set tkPriv(folderImage) \
[image create photo -file [tkFDialog_GetImgFile $w folder.gif]]
set tkPriv(fileImage) \
[image create photo -file [tkFDialog_GetImgFile $w textfile.gif]]
}
set folder $tkPriv(folderImage)
set file $tkPriv(fileImage)
set appPWD [pwd]
if [catch {
cd $data(selectPath)
}] {
# We cannot change directory to $data(selectPath). $data(selectPath)
# should have been checked before tkFDialog_Update is called, so
# we normally won't come to here. Anyways, give an error and abort
# action.
tk_messageBox -type ok -message \
"Cannot change to the directory \"$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 -command tclSortNoCase [glob -nocomplain .* *]] {
if ![string compare $f .] {
continue
}
if ![string compare $f ..] {
continue
}
if [file isdir $f] {
if ![info exists hasDoneDir($f)] {
tkIconList_Add $data(icons) $folder $f
set hasDoneDir($f) 1
}
}
}
# Make the file list
#
if ![string compare $data(filter) *] {
set files [lsort -command tclSortNoCase \
[glob -nocomplain .* *]]
} else {
set files [lsort -command tclSortNoCase \
[eval glob -nocomplain $data(filter)]]
}
set top 0
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) $w]
foreach path $list {
$data(dirMenu) add command -label $path -command [list set $var $path]
}
# Restore the PWD to the application's PWD
#
cd $appPWD
# turn off the busy cursor.
#
$data(ent) config -cursor $entCursor
$w config -cursor $dlgCursor
}
# tkFDialog_SetPathSilently --
#
# Sets data(selectPath) without invoking the trace procedure
#
proc tkFDialog_SetPathSilently {w path} {
upvar #0 $w data
trace vdelete data(selectPath) w "tkFDialog_SetPath $w"
set data(selectPath) $path
trace variable data(selectPath) w "tkFDialog_SetPath $w"
}
# This proc gets called whenever data(selectPath) is set
#
proc tkFDialog_SetPath {w name1 name2 op} {
upvar #0 $w data
tkFDialog_UpdateWhenIdle $w
}
# This proc gets called whenever data(filter) is set
#
proc tkFDialog_SetFilter {w type} {
upvar #0 $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
tkFDialog_UpdateWhenIdle $w
}
# tkFDialogResolveFile --
#
# 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
#
# 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 tkFDialogResolveFile {context text} {
set appPWD [pwd]
set path [file join $context $text]
if [catch {file exists $path}] {
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 tkFDialog_EntFocusIn {w} {
upvar #0 $w data
if [string compare [$data(ent) get] ""] {
$data(ent) selection from 0
$data(ent) selection to end
$data(ent) icursor end
} else {
$data(ent) selection clear
}
tkIconList_Unselect $data(icons)
if ![string compare $data(type) open] {
$data(okBtn) config -text "Open"
} else {
$data(okBtn) config -text "Save"
}
}
proc tkFDialog_EntFocusOut {w} {
upvar #0 $w data
$data(ent) selection clear
}
# Gets called when user presses Return in the "File name" entry.
#
proc tkFDialog_ActivateEnt {w} {
upvar #0 $w data
set text [string trim [$data(ent) get]]
set list [tkFDialogResolveFile $data(selectPath) $text]
set flag [lindex $list 0]
set path [lindex $list 1]
set file [lindex $list 2]
case $flag {
OK {
if ![string compare $file ""] {
# user has entered an existing (sub)directory
set data(selectPath) $path
$data(ent) delete 0 end
} else {
tkFDialog_SetPathSilently $w $path
set data(selectFile) $file
tkFDialog_Done $w
}
}
PATTERN {
set data(selectPath) $path
set data(filter) $file
}
FILE {
if ![string compare $data(type) open] {
tk_messageBox -icon warning -type ok \
-message "File \"[file join $path $file]\" does not exist."
$data(ent) select from 0
$data(ent) select to end
$data(ent) icursor end
} else {
tkFDialog_SetPathSilently $w $path
set data(selectFile) $file
tkFDialog_Done $w
}
}
PATH {
tk_messageBox -icon warning -type ok \
-message "Directory \"$path\" does not exist."
$data(ent) select from 0
$data(ent) select to end
$data(ent) icursor end
}
CHDIR {
tk_messageBox -type ok -message \
"Cannot change to the directory \"$path\".\nPermission denied."\
-icon warning
$data(ent) select from 0
$data(ent) select to end
$data(ent) icursor end
}
ERROR {
tk_messageBox -type ok -message \
"Invalid file name \"$path\"."\
-icon warning
$data(ent) select from 0
$data(ent) select to end
$data(ent) icursor end
}
}
}
# Gets called when user presses the Alt-s or Alt-o keys.
#
proc tkFDialog_InvokeBtn {w key} {
upvar #0 $w data
if ![string compare [$data(okBtn) cget -text] $key] {
tkButtonInvoke $data(okBtn)
}
}
# Gets called when user presses the "parent directory" button
#
proc tkFDialog_UpDirCmd {w} {
upvar #0 $w data
if [string compare $data(selectPath) "/"] {
set data(selectPath) [file dirname $data(selectPath)]
}
}
# Gets called when user presses the "OK" button
#
proc tkFDialog_OkCmd {w} {
upvar #0 $w data
set text [tkIconList_Get $data(icons)]
if [string compare $text ""] {
set file [file join $data(selectPath) $text]
if [file isdirectory $file] {
tkFDialog_ListInvoke $w $text
return
}
}
tkFDialog_ActivateEnt $w
}
# Gets called when user presses the "Cancel" button
#
proc tkFDialog_CancelCmd {w} {
upvar #0 $w data
global tkPriv
set tkPriv(selectFilePath) ""
}
# Gets called when user browses the IconList widget (dragging mouse, arrow
# keys, etc)
#
proc tkFDialog_ListBrowse {w text} {
upvar #0 $w data
if {$text == ""} {
return
}
set file [file join $data(selectPath) $text]
if ![file isdirectory $file] {
$data(ent) delete 0 end
$data(ent) insert 0 $text
if ![string compare $data(type) open] {
$data(okBtn) config -text "Open"
} else {
$data(okBtn) config -text "Save"
}
} else {
$data(okBtn) config -text "Open"
}
}
# Gets called when user invokes the IconList widget (double-click,
# Return key, etc)
#
proc tkFDialog_ListInvoke {w text} {
upvar #0 $w data
if {$text == ""} {
return
}
set file [file join $data(selectPath) $text]
if [file isdirectory $file] {
set appPWD [pwd]
if [catch {cd $file}] {
tk_messageBox -type ok -message \
"Cannot change to the directory \"$file\".\nPermission denied."\
-icon warning
} else {
cd $appPWD
set data(selectPath) $file
}
} else {
set data(selectFile) $file
tkFDialog_Done $w
}
}
# tkFDialog_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 tkFDialog_Done {w {selectFilePath ""}} {
upvar #0 $w data
global tkPriv
if ![string compare $selectFilePath ""] {
set selectFilePath [file join $data(selectPath) $data(selectFile)]
set tkPriv(selectFile) $data(selectFile)
set tkPriv(selectPath) $data(selectPath)
if {[file exists $selectFilePath] &&
![string compare $data(type) save]} {
set reply [tk_messageBox -icon warning -type yesno \
-message "File \"$selectFilePath\" already exists.\nDo you want to overwrite it?"]
if ![string compare $reply "no"] {
return
}
}
}
set tkPriv(selectFilePath) $selectFilePath
}