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- # dialog.tcl --
- #
- # This file defines the procedure tk_dialog, which creates a dialog
- # box containing a bitmap, a message, and one or more buttons.
- #
- # RCS: @(#) $Id: dialog.tcl,v 1.8 2000/04/18 02:18:33 ericm Exp $
- #
- # Copyright (c) 1992-1993 The Regents of the University of California.
- # Copyright (c) 1994-1997 Sun Microsystems, Inc.
- #
- # See the file "license.terms" for information on usage and redistribution
- # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- #
-
- #
- # tk_dialog:
- #
- # This procedure displays a dialog box, waits for a button in the dialog
- # to be invoked, then returns the index of the selected button. If the
- # dialog somehow gets destroyed, -1 is returned.
- #
- # Arguments:
- # w - Window to use for dialog top-level.
- # title - Title to display in dialog's decorative frame.
- # text - Message to display in dialog.
- # bitmap - Bitmap to display in dialog (empty string means none).
- # default - Index of button that is to display the default ring
- # (-1 means none).
- # args - One or more strings to display in buttons across the
- # bottom of the dialog box.
-
- proc tk_dialog {w title text bitmap default args} {
- global tkPriv tcl_platform
-
- # Check that $default was properly given
- if {[string is int $default]} {
- if {$default >= [llength $args]} {
- return -code error "default button index greater than number of\
- buttons specified for tk_dialog"
- }
- } elseif {[string equal {} $default]} {
- set default -1
- } else {
- set default [lsearch -exact $args $default]
- }
-
- # 1. Create the top-level window and divide it into top
- # and bottom parts.
-
- catch {destroy $w}
- toplevel $w -class Dialog
- wm title $w $title
- wm iconname $w Dialog
- wm protocol $w WM_DELETE_WINDOW { }
-
- # 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- # some window managers will create the window as withdrawn if the parent
- # window is withdrawn or iconified.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 [winfo parent $w]]] } {
- wm transient $w [winfo toplevel [winfo parent $w]]
- }
-
- if {[string equal $tcl_platform(platform) "macintosh"]} {
- unsupported1 style $w dBoxProc
- }
-
- frame $w.bot
- frame $w.top
- if {[string equal $tcl_platform(platform) "unix"]} {
- $w.bot configure -relief raised -bd 1
- $w.top configure -relief raised -bd 1
- }
- pack $w.bot -side bottom -fill both
- pack $w.top -side top -fill both -expand 1
-
- # 2. Fill the top part with bitmap and message (use the option
- # database for -wraplength and -font so that they can be
- # overridden by the caller).
-
- option add *Dialog.msg.wrapLength 3i widgetDefault
- if {[string equal $tcl_platform(platform) "macintosh"]} {
- option add *Dialog.msg.font system widgetDefault
- } else {
- option add *Dialog.msg.font {Times 12} widgetDefault
- }
-
- label $w.msg -justify left -text $text
- pack $w.msg -in $w.top -side right -expand 1 -fill both -padx 3m -pady 3m
- if {[string compare $bitmap ""]} {
- if {[string equal $tcl_platform(platform) "macintosh"] && \
- [string equal $bitmap "error"]} {
- set bitmap "stop"
- }
- label $w.bitmap -bitmap $bitmap
- pack $w.bitmap -in $w.top -side left -padx 3m -pady 3m
- }
-
- # 3. Create a row of buttons at the bottom of the dialog.
-
- set i 0
- foreach but $args {
- button $w.button$i -text $but -command [list set tkPriv(button) $i]
- if {$i == $default} {
- $w.button$i configure -default active
- } else {
- $w.button$i configure -default normal
- }
- grid $w.button$i -in $w.bot -column $i -row 0 -sticky ew -padx 10
- grid columnconfigure $w.bot $i
- # We boost the size of some Mac buttons for l&f
- if {[string equal $tcl_platform(platform) "macintosh"]} {
- set tmp [string tolower $but]
- if {[string equal $tmp "ok"] || [string equal $tmp "cancel"]} {
- grid columnconfigure $w.bot $i -minsize [expr {59 + 20}]
- }
- }
- incr i
- }
-
- # 4. Create a binding for <Return> on the dialog if there is a
- # default button.
-
- if {$default >= 0} {
- bind $w <Return> "
- [list $w.button$default] configure -state active -relief sunken
- update idletasks
- after 100
- set tkPriv(button) $default
- "
- }
-
- # 5. Create a <Destroy> binding for the window that sets the
- # button variable to -1; this is needed in case something happens
- # that destroys the window, such as its parent window being destroyed.
-
- bind $w <Destroy> {set tkPriv(button) -1}
-
- # 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 $w +$x+$y
- wm deiconify $w
-
- # 7. Set a grab and claim the focus too.
-
- set oldFocus [focus]
- set oldGrab [grab current $w]
- if {[string compare $oldGrab ""]} {
- set grabStatus [grab status $oldGrab]
- }
- grab $w
- if {$default >= 0} {
- focus $w.button$default
- } else {
- focus $w
- }
-
- # 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(button)
- catch {focus $oldFocus}
- catch {
- # It's possible that the window has already been destroyed,
- # hence this "catch". Delete the Destroy handler so that
- # tkPriv(button) doesn't get reset by it.
-
- bind $w <Destroy> {}
- destroy $w
- }
- if {[string compare $oldGrab ""]} {
- if {[string compare $grabStatus "global"]} {
- grab $oldGrab
- } else {
- grab -global $oldGrab
- }
- }
- return $tkPriv(button)
- }
-