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# Copyright (c) 1998, Bryan Oakley
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# All Rights Reservered
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#
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# Bryan Oakley
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# oakley@channelpoint.com
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#
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# combobox v1.05 August 17, 1998
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# a dropdown combobox widget
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#
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# this code is freely distributable without restriction, but is
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# provided as-is with no waranty expressed or implied.
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#
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# Standard Options:
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#
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# -background -borderwidth -font -foreground -highlightthickness
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# -highlightbackground -relief -state -textvariable
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# -selectbackground -selectborderwidth -selectforeground
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# -cursor
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#
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# Custom Options:
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# -command a command to run whenever the value is changed.
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# This command will be called with two values
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# appended to it -- the name of the widget and the
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# new value. It is run at the global scope.
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# -editable if true, user can type into edit box; false, she can't
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# -height specifies height of dropdown list, in lines
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# -image image for the button to pop down the list...
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# -maxheight specifies maximum height of dropdown list, in lines
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# -value duh
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# -width treated just like the -width option to entry widgets
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#
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#
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# widget commands:
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#
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# (see source... there's a bunch; duplicates of most of the entry
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# widget commands, plus commands to manipulate the listbox and a couple
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# unique to the combobox as a whole)
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#
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# to create a combobox:
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#
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# namespace import combobox::combobox
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# combobox .foo ?options?
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#
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#
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# thanks to the following people who provided beta test support or
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# patches to the code:
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#
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# Martin M. Hunt (hunt@cygnus.com)
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package require Tk 8.0
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package provide combobox 1.05
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namespace eval ::combobox {
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global tcl_platform
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# this is the public interface
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namespace export combobox
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if {$tcl_platform(platform) != "windows"} {
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set sbtest ". "
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radiobutton $sbtest
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set disabledfg [$sbtest cget -disabledforeground]
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set enabledfg [$sbtest cget -fg]
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} else {
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set disabledfg SystemDisabledText
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set enabledfg SystemWindowText
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}
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# the image used for the button...
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image create bitmap ::combobox::bimage -data {
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#define down_arrow_width 15
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#define down_arrow_height 15
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static char down_arrow_bits[] = {
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0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0xf8,0x8f,0xf0,0x87,0xe0,
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0x83,0xc0,0x81,0x80,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x00,0x80
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};
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}
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}
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# this is the command that gets exported, and creates a new
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# combobox widget. It works like other widget commands in that
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# it takes as its first argument a widget path, and any remaining
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# arguments are option/value pairs for the widget
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proc ::combobox::combobox {w args} {
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# build it...
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eval build $w $args
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# set some bindings...
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setBindings $w
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# and we are done!
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return $w
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}
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# builds the combobox...
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proc ::combobox::build {w args } {
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global tcl_platform
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if {[winfo exists $w]} {
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error "window name \"$w\" already exists"
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}
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# create the namespace...
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namespace eval ::combobox::$w {
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variable widgets
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variable options
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variable oldValue
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variable ignoreTrace
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variable this
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array set widgets {}
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array set options {}
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set oldValue {}
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set ignoreTrace 0
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}
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# import the widgets and options arrays into this proc
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upvar ::combobox::${w}::widgets widgets
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upvar ::combobox::${w}::options options
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# ok, everything we create should exist in the namespace
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# we create for this widget. This is to hide all the internal
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# foo from prying eyes. If they really want to get at the
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# internals, they know where they can find it...
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# see... I'm pretending to be a Java programmer here...
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set this $w
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namespace eval ::combobox::$w "set this $this"
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# the basic, always-visible parts of the combobox. We do these
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# here, because we want to query some of them for their default
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# values, which we want to juggle to other widgets. I suppose
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# I could use the options database, but I choose not to...
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set widgets(this) [frame $this -class Combobox -takefocus 0]
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set widgets(entry) [entry $this.entry -takefocus {}]
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set widgets(button) [label $this.button -takefocus 0]
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# we will later rename the frame's widget proc to be our
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# own custom widget proc. We need to keep track of this
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# new name, so we'll store it here...
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set widgets(frame) .$this
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pack $widgets(button) -side right -fill y -expand n
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pack $widgets(entry) -side left -fill both -expand y
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# we need these to be defined, regardless if the user defined
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# them for us or not...
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array set options [list \
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-height 0 \
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-maxheight 10 \
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-command {} \
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-image {} \
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-textvariable {} \
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-editable 1 \
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-state normal
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]
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# now, steal some attributes from the entry widget...
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foreach option [list -background -foreground -relief \
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-borderwidth -highlightthickness -highlightbackground \
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-font -width -selectbackground -selectborderwidth \
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-selectforeground] {
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set options($option) [$widgets(entry) cget $option]
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}
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# I should probably do this in a catch, but for now it's
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# good enough... What it does, obviously, is put all of
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# the option/values pairs into an array. Make them easier
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# to handle later on...
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array set options $args
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# now, the dropdown list... the same renaming nonsense
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# must go on here as well...
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set widgets(popup) [toplevel $this.top]
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set widgets(listbox) [listbox $this.top.list]
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set widgets(vsb) [scrollbar $this.top.vsb]
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pack $widgets(listbox) -side left -fill both -expand y
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# fine tune the widgets based on the options (and a few
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# arbitrary values...)
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# NB: we are going to use the frame to handle the relief
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# of the widget as a whole, so the entry widget will be
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# flat.
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$widgets(vsb) configure \
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-command "$widgets(listbox) yview" \
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-highlightthickness 0
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set width [expr [winfo reqwidth $widgets(vsb)] - 2]
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$widgets(button) configure \
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-highlightthickness 0 \
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-borderwidth 1 \
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-relief raised \
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-width $width
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$widgets(entry) configure \
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-borderwidth 0 \
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-relief flat \
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-highlightthickness 0
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$widgets(popup) configure \
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-borderwidth 1 \
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-relief sunken
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$widgets(listbox) configure \
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-selectmode browse \
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-background [$widgets(entry) cget -bg] \
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-yscrollcommand "$widgets(vsb) set" \
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-borderwidth 0
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#Windows look'n'feel: black boarder around listbox
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if {$tcl_platform(platform)=="windows"} {
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$widgets(listbox) configure -highlightbackground black
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}
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# do some window management foo.
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wm overrideredirect $widgets(popup) 1
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wm transient $widgets(popup) [winfo toplevel $this]
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wm group $widgets(popup) [winfo parent $this]
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wm resizable $widgets(popup) 0 0
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wm withdraw $widgets(popup)
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# this moves the original frame widget proc into our
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# namespace and gives it a handy name
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rename ::$this $widgets(frame)
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# now, create our widget proc. Obviously (?) it goes in
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# the global namespace
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proc ::$this {command args} \
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"eval ::combobox::widgetProc $this \$command \$args"
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# namespace export $this
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# uplevel \#0 namespace import ::combobox::${this}::$this
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# ok, the thing exists... let's do a bit more configuration:
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foreach opt [array names options] {
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::combobox::configure $widgets(this) set $opt $options($opt)
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}
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}
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# here's where we do most of the binding foo. I think there's probably
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# a few bindings I ought to add that I just haven't thought about...
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proc ::combobox::setBindings {w} {
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namespace eval ::combobox::$w {
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variable widgets
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variable options
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# make sure we clean up after ourselves...
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bind $widgets(this) <Destroy> [list ::combobox::destroyHandler $this]
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# this closes the listbox if we get hidden
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bind $widgets(this) <Unmap> "$widgets(this) close"
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# this helps (but doesn't fully solve) focus issues.
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bind $widgets(this) <FocusIn> [list focus $widgets(entry)]
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# this makes our "button" (which is actually a label)
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# do the right thing
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bind $widgets(button) <ButtonPress-1> [list $widgets(this) toggle]
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# this lets the autoscan of the listbox work, even if they
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# move the cursor over the entry widget.
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bind $widgets(entry) <B1-Enter> "break"
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bind $widgets(entry) <FocusIn> \
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[list ::combobox::entryFocus $widgets(this) "<FocusIn>"]
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bind $widgets(entry) <FocusOut> \
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[list ::combobox::entryFocus $widgets(this) "<FocusOut>"]
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# this will (hopefully) close (and lose the grab on) the
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# listbox if the user clicks anywhere outside of it. Note
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# that on Windows, you can click on some other app and
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# the listbox will still be there, because tcl won't see
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# that button click
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bind $widgets(this) <Any-ButtonPress> [list $widgets(this) close]
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bind $widgets(this) <Any-ButtonRelease> [list $widgets(this) close]
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bind $widgets(listbox) <ButtonRelease-1> \
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"::combobox::select $widgets(this) \[$widgets(listbox) nearest %y\]; break"
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bind $widgets(listbox) <Any-Motion> {
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%W selection clear 0 end
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%W activate @%x,%y
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%W selection anchor @%x,%y
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%W selection set @%x,%y @%x,%y
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# need to do a yview if the cursor goes off the top
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# or bottom of the window... (or do we?)
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}
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# these events need to be passed from the entry
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# widget to the listbox, or need some sort of special
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# handling....
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foreach event [list <Up> <Down> <Tab> <Return> <Escape> \
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<Next> <Prior> <Double-1> <1> <Any-KeyPress> \
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<FocusIn> <FocusOut>] {
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bind $widgets(entry) $event \
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"::combobox::handleEvent $widgets(this) $event"
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}
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}
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}
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# this proc handles events from the entry widget that we want handled
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# specially (typically, to allow navigation of the list even though
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# the focus is in the entry widget)
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proc ::combobox::handleEvent {w event} {
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upvar ::combobox::${w}::widgets widgets
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upvar ::combobox::${w}::options options
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upvar ::combobox::${w}::oldValue oldValue
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# for all of these events, if we have a special action we'll
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# do that and do a "return -code break" to keep additional
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# bindings from firing. Otherwise we'll let the event fall
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# on through.
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switch $event {
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"<Any-KeyPress>" {
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set editable [::combobox::getBoolean $options(-editable)]
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# if the widget is editable, clear the selection.
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# this makes it more obvious what will happen if the
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# user presses <Return> (and helps our code know what
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# to do if the user presses return)
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if {$editable} {
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$widgets(listbox) see 0
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$widgets(listbox) selection clear 0 end
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$widgets(listbox) selection anchor 0
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$widgets(listbox) activate 0
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}
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}
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"<FocusIn>" {
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set oldValue [$widgets(entry) get]
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}
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"<FocusOut>" {
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$widgets(entry) delete 0 end
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$widgets(entry) insert 0 $oldValue
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}
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"<1>" {
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set editable [::combobox::getBoolean $options(-editable)]
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if {!$editable} {
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if {[winfo ismapped $widgets(popup)]} {
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$widgets(this) close
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return -code break;
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|
|
| 346 |
|
|
} else {
|
| 347 |
|
|
if {$options(-state) != "disabled"} {
|
| 348 |
|
|
$widgets(this) open
|
| 349 |
|
|
return -code break;
|
| 350 |
|
|
}
|
| 351 |
|
|
}
|
| 352 |
|
|
}
|
| 353 |
|
|
}
|
| 354 |
|
|
|
| 355 |
|
|
"<Double-1>" {
|
| 356 |
|
|
if {$options(-state) != "disabled"} {
|
| 357 |
|
|
$widgets(this) toggle
|
| 358 |
|
|
return -code break;
|
| 359 |
|
|
}
|
| 360 |
|
|
}
|
| 361 |
|
|
"<Tab>" {
|
| 362 |
|
|
if {[winfo ismapped $widgets(popup)]} {
|
| 363 |
|
|
::combobox::find $widgets(this)
|
| 364 |
|
|
return -code break;
|
| 365 |
|
|
}
|
| 366 |
|
|
}
|
| 367 |
|
|
"<Escape>" {
|
| 368 |
|
|
$widgets(entry) delete 0 end
|
| 369 |
|
|
$widgets(entry) insert 0 $oldValue
|
| 370 |
|
|
if {[winfo ismapped $widgets(popup)]} {
|
| 371 |
|
|
$widgets(this) close
|
| 372 |
|
|
return -code break;
|
| 373 |
|
|
}
|
| 374 |
|
|
}
|
| 375 |
|
|
|
| 376 |
|
|
"<Return>" {
|
| 377 |
|
|
set editable [::combobox::getBoolean $options(-editable)]
|
| 378 |
|
|
if {$editable} {
|
| 379 |
|
|
# if there is something in the list that is selected,
|
| 380 |
|
|
# we'll pick it. Otherwise, use whats in the
|
| 381 |
|
|
# entry widget...
|
| 382 |
|
|
set index [$widgets(listbox) curselection]
|
| 383 |
|
|
if {[winfo ismapped $widgets(popup)] && \
|
| 384 |
|
|
[llength $index] > 0} {
|
| 385 |
|
|
|
| 386 |
|
|
::combobox::select $widgets(this) \
|
| 387 |
|
|
[$widgets(listbox) curselection]
|
| 388 |
|
|
return -code break;
|
| 389 |
|
|
|
| 390 |
|
|
} else {
|
| 391 |
|
|
::combobox::setValue $widgets(this) [$widgets(this) get]
|
| 392 |
|
|
$widgets(this) close
|
| 393 |
|
|
return -code break;
|
| 394 |
|
|
}
|
| 395 |
|
|
}
|
| 396 |
|
|
|
| 397 |
|
|
if {[winfo ismapped $widgets(popup)]} {
|
| 398 |
|
|
::combobox::select $widgets(this) \
|
| 399 |
|
|
[$widgets(listbox) curselection]
|
| 400 |
|
|
return -code break;
|
| 401 |
|
|
}
|
| 402 |
|
|
|
| 403 |
|
|
}
|
| 404 |
|
|
|
| 405 |
|
|
"<Next>" {
|
| 406 |
|
|
$widgets(listbox) yview scroll 1 pages
|
| 407 |
|
|
set index [$widgets(listbox) index @0,0]
|
| 408 |
|
|
$widgets(listbox) see $index
|
| 409 |
|
|
$widgets(listbox) activate $index
|
| 410 |
|
|
$widgets(listbox) selection clear 0 end
|
| 411 |
|
|
$widgets(listbox) selection anchor $index
|
| 412 |
|
|
$widgets(listbox) selection set $index
|
| 413 |
|
|
|
| 414 |
|
|
}
|
| 415 |
|
|
|
| 416 |
|
|
"<Prior>" {
|
| 417 |
|
|
$widgets(listbox) yview scroll -1 pages
|
| 418 |
|
|
set index [$widgets(listbox) index @0,0]
|
| 419 |
|
|
$widgets(listbox) activate $index
|
| 420 |
|
|
$widgets(listbox) see $index
|
| 421 |
|
|
$widgets(listbox) selection clear 0 end
|
| 422 |
|
|
$widgets(listbox) selection anchor $index
|
| 423 |
|
|
$widgets(listbox) selection set $index
|
| 424 |
|
|
}
|
| 425 |
|
|
|
| 426 |
|
|
"<Down>" {
|
| 427 |
|
|
if {![winfo ismapped $widgets(popup)]} {
|
| 428 |
|
|
if {$options(-state) != "disabled"} {
|
| 429 |
|
|
$widgets(this) open
|
| 430 |
|
|
return -code break;
|
| 431 |
|
|
}
|
| 432 |
|
|
} else {
|
| 433 |
|
|
tkListboxUpDown $widgets(listbox) 1
|
| 434 |
|
|
return -code break;
|
| 435 |
|
|
}
|
| 436 |
|
|
}
|
| 437 |
|
|
"<Up>" {
|
| 438 |
|
|
if {![winfo ismapped $widgets(popup)]} {
|
| 439 |
|
|
if {$options(-state) != "disabled"} {
|
| 440 |
|
|
$widgets(this) open
|
| 441 |
|
|
return -code break;
|
| 442 |
|
|
}
|
| 443 |
|
|
} else {
|
| 444 |
|
|
tkListboxUpDown $widgets(listbox) -1
|
| 445 |
|
|
return -code break;
|
| 446 |
|
|
}
|
| 447 |
|
|
}
|
| 448 |
|
|
}
|
| 449 |
|
|
}
|
| 450 |
|
|
|
| 451 |
|
|
# this cleans up the mess that is left behind when the widget goes away
|
| 452 |
|
|
proc ::combobox::destroyHandler {w} {
|
| 453 |
|
|
|
| 454 |
|
|
# kill any trace or after we may have started...
|
| 455 |
|
|
namespace eval ::combobox::$w {
|
| 456 |
|
|
variable options
|
| 457 |
|
|
variable widgets
|
| 458 |
|
|
|
| 459 |
|
|
if {[string length $options(-textvariable)]} {
|
| 460 |
|
|
trace vdelete $options(-textvariable) w \
|
| 461 |
|
|
[list ::combobox::vTrace $widgets(this)]
|
| 462 |
|
|
}
|
| 463 |
|
|
|
| 464 |
|
|
# CYGNUS LOCAL - kill any after command that may be registered.
|
| 465 |
|
|
if {[info exists widgets(after)]} {
|
| 466 |
|
|
after cancel $widgets(after)
|
| 467 |
|
|
unset widgets(after)
|
| 468 |
|
|
}
|
| 469 |
|
|
}
|
| 470 |
|
|
|
| 471 |
|
|
# catch {rename ::combobox::${w}::$w {}}
|
| 472 |
|
|
# kill the namespace
|
| 473 |
|
|
catch {namespace delete ::combobox::$w}
|
| 474 |
|
|
}
|
| 475 |
|
|
|
| 476 |
|
|
# finds something in the listbox that matches the pattern in the
|
| 477 |
|
|
# entry widget
|
| 478 |
|
|
#
|
| 479 |
|
|
# I'm not convinced this is working the way it ought to. It works,
|
| 480 |
|
|
# but is the behavior what is expected? I've also got a gut feeling
|
| 481 |
|
|
# that there's a better way to do this, but I'm too lazy to figure
|
| 482 |
|
|
# it out...
|
| 483 |
|
|
proc ::combobox::find {w {exact 0}} {
|
| 484 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 485 |
|
|
upvar ::combobox::${w}::options options
|
| 486 |
|
|
|
| 487 |
|
|
## *sigh* this logic is rather gross and convoluted. Surely
|
| 488 |
|
|
## there is a more simple, straight-forward way to implement
|
| 489 |
|
|
## all this. As the saying goes, I lack the time to make it
|
| 490 |
|
|
## shorter...
|
| 491 |
|
|
|
| 492 |
|
|
# use what is already in the entry widget as a pattern
|
| 493 |
|
|
set pattern [$widgets(entry) get]
|
| 494 |
|
|
|
| 495 |
|
|
if {[string length $pattern] == 0} {
|
| 496 |
|
|
# clear the current selection
|
| 497 |
|
|
$widgets(listbox) see 0
|
| 498 |
|
|
$widgets(listbox) selection clear 0 end
|
| 499 |
|
|
$widgets(listbox) selection anchor 0
|
| 500 |
|
|
$widgets(listbox) activate 0
|
| 501 |
|
|
return
|
| 502 |
|
|
}
|
| 503 |
|
|
|
| 504 |
|
|
# we're going to be searching this list...
|
| 505 |
|
|
set list [$widgets(listbox) get 0 end]
|
| 506 |
|
|
|
| 507 |
|
|
# if we are doing an exact match, try to find,
|
| 508 |
|
|
# well, an exact match
|
| 509 |
|
|
if {$exact} {
|
| 510 |
|
|
set exactMatch [lsearch -exact $list $pattern]
|
| 511 |
|
|
}
|
| 512 |
|
|
|
| 513 |
|
|
# search for it. We'll try to be clever and not only
|
| 514 |
|
|
# search for a match for what they typed, but a match for
|
| 515 |
|
|
# something close to what they typed. We'll keep removing one
|
| 516 |
|
|
# character at a time from the pattern until we find a match
|
| 517 |
|
|
# of some sort.
|
| 518 |
|
|
set index -1
|
| 519 |
|
|
while {$index == -1 && [string length $pattern]} {
|
| 520 |
|
|
set index [lsearch -glob $list "$pattern*"]
|
| 521 |
|
|
if {$index == -1} {
|
| 522 |
|
|
regsub {.$} $pattern {} pattern
|
| 523 |
|
|
}
|
| 524 |
|
|
}
|
| 525 |
|
|
|
| 526 |
|
|
# this is the item that most closely matches...
|
| 527 |
|
|
set thisItem [lindex $list $index]
|
| 528 |
|
|
|
| 529 |
|
|
# did we find a match? If so, do some additional munging...
|
| 530 |
|
|
if {$index != -1} {
|
| 531 |
|
|
|
| 532 |
|
|
# we need to find the part of the first item that is
|
| 533 |
|
|
# unique wrt the second... I know there's probably a
|
| 534 |
|
|
# simpler way to do this...
|
| 535 |
|
|
|
| 536 |
|
|
set nextIndex [expr $index + 1]
|
| 537 |
|
|
set nextItem [lindex $list $nextIndex]
|
| 538 |
|
|
|
| 539 |
|
|
# we don't really need to do much if the next
|
| 540 |
|
|
# item doesn't match our pattern...
|
| 541 |
|
|
if {[string match $pattern* $nextItem]} {
|
| 542 |
|
|
# ok, the next item matches our pattern, too
|
| 543 |
|
|
# now the trick is to find the first character
|
| 544 |
|
|
# where they *don't* match...
|
| 545 |
|
|
set marker [string length $pattern]
|
| 546 |
|
|
while {$marker <= [string length $pattern]} {
|
| 547 |
|
|
set a [string index $thisItem $marker]
|
| 548 |
|
|
set b [string index $nextItem $marker]
|
| 549 |
|
|
if {[string compare $a $b] == 0} {
|
| 550 |
|
|
append pattern $a
|
| 551 |
|
|
incr marker
|
| 552 |
|
|
} else {
|
| 553 |
|
|
break
|
| 554 |
|
|
}
|
| 555 |
|
|
}
|
| 556 |
|
|
} else {
|
| 557 |
|
|
set marker [string length $pattern]
|
| 558 |
|
|
}
|
| 559 |
|
|
|
| 560 |
|
|
} else {
|
| 561 |
|
|
set marker end
|
| 562 |
|
|
set index 0
|
| 563 |
|
|
}
|
| 564 |
|
|
|
| 565 |
|
|
# ok, we know the pattern and what part is unique;
|
| 566 |
|
|
# update the entry widget and listbox appropriately
|
| 567 |
|
|
if {$exact && $exactMatch == -1} {
|
| 568 |
|
|
$widgets(listbox) selection clear 0 end
|
| 569 |
|
|
$widgets(listbox) see $index
|
| 570 |
|
|
} else {
|
| 571 |
|
|
$widgets(entry) delete 0 end
|
| 572 |
|
|
$widgets(entry) insert end $thisItem
|
| 573 |
|
|
$widgets(entry) selection clear
|
| 574 |
|
|
$widgets(entry) selection range $marker end
|
| 575 |
|
|
$widgets(listbox) activate $index
|
| 576 |
|
|
$widgets(listbox) selection clear 0 end
|
| 577 |
|
|
$widgets(listbox) selection anchor $index
|
| 578 |
|
|
$widgets(listbox) selection set $index
|
| 579 |
|
|
$widgets(listbox) see $index
|
| 580 |
|
|
}
|
| 581 |
|
|
}
|
| 582 |
|
|
|
| 583 |
|
|
# selects an item from the list and sets the value of the combobox
|
| 584 |
|
|
# to that value
|
| 585 |
|
|
proc ::combobox::select {w index} {
|
| 586 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 587 |
|
|
upvar ::combobox::${w}::options options
|
| 588 |
|
|
|
| 589 |
|
|
catch {
|
| 590 |
|
|
set data [$widgets(listbox) get [lindex $index 0]]
|
| 591 |
|
|
::combobox::setValue $widgets(this) $data
|
| 592 |
|
|
}
|
| 593 |
|
|
|
| 594 |
|
|
$widgets(this) close
|
| 595 |
|
|
}
|
| 596 |
|
|
|
| 597 |
|
|
# computes the geometry of the popup list based on the size of the
|
| 598 |
|
|
# combobox. Compute size of popup by requested size of listbox
|
| 599 |
|
|
# plus twice the bordersize of the popup.
|
| 600 |
|
|
proc ::combobox::computeGeometry {w} {
|
| 601 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 602 |
|
|
upvar ::combobox::${w}::options options
|
| 603 |
|
|
|
| 604 |
|
|
if {$options(-height) == 0 && $options(-maxheight) != "0"} {
|
| 605 |
|
|
# if this is the case, count the items and see if
|
| 606 |
|
|
# it exceeds our maxheight. If so, set the listbox
|
| 607 |
|
|
# size to maxheight...
|
| 608 |
|
|
set nitems [$widgets(listbox) size]
|
| 609 |
|
|
if {$nitems > $options(-maxheight)} {
|
| 610 |
|
|
# tweak the height of the listbox
|
| 611 |
|
|
$widgets(listbox) configure -height $options(-maxheight)
|
| 612 |
|
|
} else {
|
| 613 |
|
|
# un-tweak the height of the listbox
|
| 614 |
|
|
$widgets(listbox) configure -height 0
|
| 615 |
|
|
}
|
| 616 |
|
|
update idletasks
|
| 617 |
|
|
}
|
| 618 |
|
|
set bd [$widgets(popup) cget -borderwidth]
|
| 619 |
|
|
set height [expr [winfo reqheight $widgets(listbox)] + $bd + $bd]
|
| 620 |
|
|
#set height [winfo reqheight $widgets(popup)]
|
| 621 |
|
|
|
| 622 |
|
|
set width [winfo reqwidth $widgets(this)]
|
| 623 |
|
|
|
| 624 |
|
|
# Compute size of listbox, allowing larger entries to expand
|
| 625 |
|
|
# the listbox, clipped by the screen
|
| 626 |
|
|
set x [winfo rootx $widgets(this)]
|
| 627 |
|
|
set sw [winfo screenwidth $widgets(this)]
|
| 628 |
|
|
if {$width > $sw - $x} {
|
| 629 |
|
|
# The listbox will run off the side of the screen, so clip it
|
| 630 |
|
|
# (and keep a 10 pixel margin).
|
| 631 |
|
|
set width [expr {$sw - $x - 10}]
|
| 632 |
|
|
}
|
| 633 |
|
|
set size [format "%dx%d" $width $height]
|
| 634 |
|
|
set y [expr {[winfo rooty $widgets(this)]+[winfo reqheight $widgets(this)] + 1}]
|
| 635 |
|
|
if {[expr $y + $height] >= [winfo screenheight .]} {
|
| 636 |
|
|
set y [expr [winfo rooty $widgets(this)] - $height]
|
| 637 |
|
|
}
|
| 638 |
|
|
set location "+[winfo rootx $widgets(this)]+$y"
|
| 639 |
|
|
set geometry "=${size}${location}"
|
| 640 |
|
|
return $geometry
|
| 641 |
|
|
}
|
| 642 |
|
|
|
| 643 |
|
|
# perform an internal widget command, then mung any error results
|
| 644 |
|
|
# to look like it came from our megawidget. A lot of work just to
|
| 645 |
|
|
# give the illusion that our megawidget is an atomic widget
|
| 646 |
|
|
proc ::combobox::doInternalWidgetCommand {w subwidget command args} {
|
| 647 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 648 |
|
|
upvar ::combobox::${w}::options options
|
| 649 |
|
|
|
| 650 |
|
|
set subcommand $command
|
| 651 |
|
|
set command [concat $widgets($subwidget) $command $args]
|
| 652 |
|
|
|
| 653 |
|
|
if {[catch $command result]} {
|
| 654 |
|
|
# replace the subwidget name with the megawidget name
|
| 655 |
|
|
regsub $widgets($subwidget) $result $widgets($w) result
|
| 656 |
|
|
|
| 657 |
|
|
# replace specific instances of the subwidget command
|
| 658 |
|
|
# with out megawidget command
|
| 659 |
|
|
switch $subwidget,$subcommand {
|
| 660 |
|
|
listbox,index {regsub "index" $result "list index" result}
|
| 661 |
|
|
listbox,insert {regsub "insert" $result "list insert" result}
|
| 662 |
|
|
listbox,delete {regsub "delete" $result "list delete" result}
|
| 663 |
|
|
listbox,get {regsub "get" $result "list get" result}
|
| 664 |
|
|
listbox,size {regsub "size" $result "list size" result}
|
| 665 |
|
|
listbox,curselection {regsub "curselection" $result "list curselection" result}
|
| 666 |
|
|
}
|
| 667 |
|
|
error $result
|
| 668 |
|
|
|
| 669 |
|
|
} else {
|
| 670 |
|
|
return $result
|
| 671 |
|
|
}
|
| 672 |
|
|
}
|
| 673 |
|
|
|
| 674 |
|
|
|
| 675 |
|
|
# this is the widget proc that gets called when you do something like
|
| 676 |
|
|
# ".checkbox configure ..."
|
| 677 |
|
|
proc ::combobox::widgetProc {w command args} {
|
| 678 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 679 |
|
|
upvar ::combobox::${w}::options options
|
| 680 |
|
|
|
| 681 |
|
|
# this is just shorthand notation...
|
| 682 |
|
|
set doWidgetCommand \
|
| 683 |
|
|
[list ::combobox::doInternalWidgetCommand $widgets(this)]
|
| 684 |
|
|
|
| 685 |
|
|
if {$command == "list"} {
|
| 686 |
|
|
# ok, the next argument is a list command; we'll
|
| 687 |
|
|
# rip it from args and append it to command to
|
| 688 |
|
|
# create a unique internal command
|
| 689 |
|
|
#
|
| 690 |
|
|
# NB: because of the sloppy way we are doing this,
|
| 691 |
|
|
# we'll also let the user enter our secret command
|
| 692 |
|
|
# directly (eg: listinsert, listdelete), but we
|
| 693 |
|
|
# won't document that fact
|
| 694 |
|
|
set command "list[lindex $args 0]"
|
| 695 |
|
|
set args [lrange $args 1 end]
|
| 696 |
|
|
}
|
| 697 |
|
|
|
| 698 |
|
|
# many of these commands are just synonyms for specific
|
| 699 |
|
|
# commands in one of the subwidgets. We'll get them out
|
| 700 |
|
|
# of the way first, then do the custom commands.
|
| 701 |
|
|
switch $command {
|
| 702 |
|
|
bbox {eval $doWidgetCommand entry bbox $args}
|
| 703 |
|
|
delete {eval $doWidgetCommand entry delete $args}
|
| 704 |
|
|
get {eval $doWidgetCommand entry get $args}
|
| 705 |
|
|
icursor {eval $doWidgetCommand entry icursor $args}
|
| 706 |
|
|
index {eval $doWidgetCommand entry index $args}
|
| 707 |
|
|
insert {eval $doWidgetCommand entry insert $args}
|
| 708 |
|
|
listinsert {
|
| 709 |
|
|
eval $doWidgetCommand listbox insert $args
|
| 710 |
|
|
# pack the scrollbar if the number of items exceeds
|
| 711 |
|
|
# the maximum
|
| 712 |
|
|
if {$options(-height) == 0 && $options(-maxheight) != 0
|
| 713 |
|
|
&& ([$widgets(listbox) size] > $options(-maxheight))} {
|
| 714 |
|
|
pack $widgets(vsb) -before $widgets(listbox) -side right \
|
| 715 |
|
|
-fill y -expand n
|
| 716 |
|
|
}
|
| 717 |
|
|
}
|
| 718 |
|
|
listdelete {
|
| 719 |
|
|
eval $doWidgetCommand listbox delete $args
|
| 720 |
|
|
# unpack the scrollbar if the number of items
|
| 721 |
|
|
# decreases under the maximum
|
| 722 |
|
|
if {$options(-height) == 0 && $options(-maxheight) != 0
|
| 723 |
|
|
&& ([$widgets(listbox) size] <= $options(-maxheight))} {
|
| 724 |
|
|
pack forget $widgets(vsb)
|
| 725 |
|
|
}
|
| 726 |
|
|
}
|
| 727 |
|
|
listget {eval $doWidgetCommand listbox get $args}
|
| 728 |
|
|
listindex {eval $doWidgetCommand listbox index $args}
|
| 729 |
|
|
listsize {eval $doWidgetCommand listbox size $args}
|
| 730 |
|
|
listcurselection {eval $doWidgetCommand listbox curselection $args}
|
| 731 |
|
|
|
| 732 |
|
|
scan {eval $doWidgetCommand entry scan $args}
|
| 733 |
|
|
selection {eval $doWidgetCommand entry selection $args}
|
| 734 |
|
|
xview {eval $doWidgetCommand entry xview $args}
|
| 735 |
|
|
|
| 736 |
|
|
entryset {
|
| 737 |
|
|
# update the entry field without invoking the command
|
| 738 |
|
|
::combobox::setValue $widgets(this) [lindex $args 0] 0
|
| 739 |
|
|
}
|
| 740 |
|
|
|
| 741 |
|
|
toggle {
|
| 742 |
|
|
# ignore this command if the widget is disabled...
|
| 743 |
|
|
if {$options(-state) == "disabled"} return
|
| 744 |
|
|
|
| 745 |
|
|
# pops down the list if it is not, hides it
|
| 746 |
|
|
# if it is...
|
| 747 |
|
|
if {[winfo ismapped $widgets(popup)]} {
|
| 748 |
|
|
$widgets(this) close
|
| 749 |
|
|
} else {
|
| 750 |
|
|
$widgets(this) open
|
| 751 |
|
|
}
|
| 752 |
|
|
}
|
| 753 |
|
|
|
| 754 |
|
|
open {
|
| 755 |
|
|
# if we are disabled, we won't allow this to happen
|
| 756 |
|
|
if {$options(-state) == "disabled"} {
|
| 757 |
|
|
return 0
|
| 758 |
|
|
}
|
| 759 |
|
|
|
| 760 |
|
|
# compute the geometry of the window to pop up, and set
|
| 761 |
|
|
# it, and force the window manager to take notice
|
| 762 |
|
|
# (even if it is not presently visible).
|
| 763 |
|
|
#
|
| 764 |
|
|
# this isn't strictly necessary if the window is already
|
| 765 |
|
|
# mapped, but we'll go ahead and set the geometry here
|
| 766 |
|
|
# since its harmless and *may* actually reset the geometry
|
| 767 |
|
|
# to something better in some weird case.
|
| 768 |
|
|
set geometry [::combobox::computeGeometry $widgets(this)]
|
| 769 |
|
|
wm geometry $widgets(popup) $geometry
|
| 770 |
|
|
update idletasks
|
| 771 |
|
|
|
| 772 |
|
|
# if we are already open, there's nothing else to do
|
| 773 |
|
|
if {[winfo ismapped $widgets(popup)]} {
|
| 774 |
|
|
return 0
|
| 775 |
|
|
}
|
| 776 |
|
|
|
| 777 |
|
|
# ok, tweak the visual appearance of things and
|
| 778 |
|
|
# make the list pop up
|
| 779 |
|
|
$widgets(button) configure -relief sunken
|
| 780 |
|
|
wm deiconify $widgets(popup)
|
| 781 |
|
|
raise $widgets(popup) [winfo parent $widgets(this)]
|
| 782 |
|
|
focus -force $widgets(entry)
|
| 783 |
|
|
|
| 784 |
|
|
# select something by default, but only if its an
|
| 785 |
|
|
# exact match...
|
| 786 |
|
|
::combobox::find $widgets(this) 1
|
| 787 |
|
|
|
| 788 |
|
|
# *gasp* do a global grab!!! Mom always told not to
|
| 789 |
|
|
# do things like this... :-)
|
| 790 |
|
|
grab -global $widgets(this)
|
| 791 |
|
|
|
| 792 |
|
|
# fake the listbox into thinking it has focus
|
| 793 |
|
|
event generate $widgets(listbox) <B1-Enter>
|
| 794 |
|
|
|
| 795 |
|
|
return 1
|
| 796 |
|
|
}
|
| 797 |
|
|
|
| 798 |
|
|
close {
|
| 799 |
|
|
# if we are already closed, don't do anything...
|
| 800 |
|
|
if {![winfo ismapped $widgets(popup)]} {
|
| 801 |
|
|
return 0
|
| 802 |
|
|
}
|
| 803 |
|
|
# hides the listbox
|
| 804 |
|
|
grab release $widgets(this)
|
| 805 |
|
|
$widgets(button) configure -relief raised
|
| 806 |
|
|
wm withdraw $widgets(popup)
|
| 807 |
|
|
|
| 808 |
|
|
# select the data in the entry widget. Not sure
|
| 809 |
|
|
# why, other than observation seems to suggest that's
|
| 810 |
|
|
# what windows widgets do.
|
| 811 |
|
|
set editable [::combobox::getBoolean $options(-editable)]
|
| 812 |
|
|
if {$editable} {
|
| 813 |
|
|
$widgets(entry) selection range 0 end
|
| 814 |
|
|
$widgets(button) configure -relief raised
|
| 815 |
|
|
}
|
| 816 |
|
|
|
| 817 |
|
|
# magic tcl stuff (see tk.tcl in the distribution
|
| 818 |
|
|
# lib directory)
|
| 819 |
|
|
tkCancelRepeat
|
| 820 |
|
|
|
| 821 |
|
|
return 1
|
| 822 |
|
|
}
|
| 823 |
|
|
|
| 824 |
|
|
cget {
|
| 825 |
|
|
# tries to mimic the standard "cget" command
|
| 826 |
|
|
if {[llength $args] != 1} {
|
| 827 |
|
|
error "wrong # args: should be \"$widgets(this) cget option\""
|
| 828 |
|
|
}
|
| 829 |
|
|
set option [lindex $args 0]
|
| 830 |
|
|
return [::combobox::configure $widgets(this) cget $option]
|
| 831 |
|
|
}
|
| 832 |
|
|
|
| 833 |
|
|
configure {
|
| 834 |
|
|
# trys to mimic the standard "configure" command
|
| 835 |
|
|
if {[llength $args] == 0} {
|
| 836 |
|
|
# this isn't the same format as "real" widgets,
|
| 837 |
|
|
# but for now its good enough
|
| 838 |
|
|
foreach item [lsort [array names options]] {
|
| 839 |
|
|
lappend result [list $item $options($item)]
|
| 840 |
|
|
}
|
| 841 |
|
|
return $result
|
| 842 |
|
|
|
| 843 |
|
|
} elseif {[llength $args] == 1} {
|
| 844 |
|
|
# they are requesting configure information...
|
| 845 |
|
|
set option [lindex $args 0]
|
| 846 |
|
|
return [::combobox::configure $widgets(this) get $option]
|
| 847 |
|
|
} else {
|
| 848 |
|
|
array set tmpopt $args
|
| 849 |
|
|
foreach opt [array names tmpopt] {
|
| 850 |
|
|
::combobox::configure $widgets(this) set $opt $tmpopt($opt)
|
| 851 |
|
|
}
|
| 852 |
|
|
}
|
| 853 |
|
|
}
|
| 854 |
|
|
default {
|
| 855 |
|
|
error "bad option \"$command\""
|
| 856 |
|
|
}
|
| 857 |
|
|
}
|
| 858 |
|
|
}
|
| 859 |
|
|
|
| 860 |
|
|
# handles all of the configure and cget foo
|
| 861 |
|
|
proc ::combobox::configure {w action {option ""} {newValue ""}} {
|
| 862 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 863 |
|
|
upvar ::combobox::${w}::options options
|
| 864 |
|
|
set namespace "::combobox::${w}"
|
| 865 |
|
|
|
| 866 |
|
|
if {$action == "get"} {
|
| 867 |
|
|
# this really ought to do more than just get the value,
|
| 868 |
|
|
# but for the time being I don't fully support the configure
|
| 869 |
|
|
# command in all its glory...
|
| 870 |
|
|
if {$option == "-value"} {
|
| 871 |
|
|
return [list "-value" [$widgets(entry) get]]
|
| 872 |
|
|
} else {
|
| 873 |
|
|
return [list $option $options($option)]
|
| 874 |
|
|
}
|
| 875 |
|
|
|
| 876 |
|
|
} elseif {$action == "cget"} {
|
| 877 |
|
|
if {$option == "-value"} {
|
| 878 |
|
|
return [$widgets(entry) get]
|
| 879 |
|
|
} else {
|
| 880 |
|
|
return $options($option)
|
| 881 |
|
|
}
|
| 882 |
|
|
|
| 883 |
|
|
} else {
|
| 884 |
|
|
|
| 885 |
|
|
if {[info exists options($option)]} {
|
| 886 |
|
|
set oldValue $options($option)
|
| 887 |
|
|
set options($option) $newValue
|
| 888 |
|
|
} else {
|
| 889 |
|
|
set oldValue ""
|
| 890 |
|
|
set options($option) $newValue
|
| 891 |
|
|
}
|
| 892 |
|
|
|
| 893 |
|
|
# some (actually, most) options require us to
|
| 894 |
|
|
# do something, like change the attributes of
|
| 895 |
|
|
# a widget or two. Here's where we do that...
|
| 896 |
|
|
switch -- $option {
|
| 897 |
|
|
-background {
|
| 898 |
|
|
$widgets(frame) configure -background $newValue
|
| 899 |
|
|
$widgets(entry) configure -background $newValue
|
| 900 |
|
|
$widgets(listbox) configure -background $newValue
|
| 901 |
|
|
$widgets(vsb) configure -background $newValue
|
| 902 |
|
|
$widgets(vsb) configure -troughcolor $newValue
|
| 903 |
|
|
}
|
| 904 |
|
|
|
| 905 |
|
|
-borderwidth {
|
| 906 |
|
|
$widgets(frame) configure -borderwidth $newValue
|
| 907 |
|
|
}
|
| 908 |
|
|
|
| 909 |
|
|
-command {
|
| 910 |
|
|
# nothing else to do...
|
| 911 |
|
|
}
|
| 912 |
|
|
|
| 913 |
|
|
-cursor {
|
| 914 |
|
|
$widgets(frame) configure -cursor $newValue
|
| 915 |
|
|
$widgets(entry) configure -cursor $newValue
|
| 916 |
|
|
$widgets(listbox) configure -cursor $newValue
|
| 917 |
|
|
}
|
| 918 |
|
|
|
| 919 |
|
|
-editable {
|
| 920 |
|
|
if {$newValue} {
|
| 921 |
|
|
# it's editable...
|
| 922 |
|
|
$widgets(entry) configure -state normal
|
| 923 |
|
|
$widgets(entry) configure -bg white
|
| 924 |
|
|
} else {
|
| 925 |
|
|
global tcl_platform
|
| 926 |
|
|
|
| 927 |
|
|
$widgets(entry) configure -state disabled
|
| 928 |
|
|
$widgets(entry) configure -bg white
|
| 929 |
|
|
}
|
| 930 |
|
|
}
|
| 931 |
|
|
|
| 932 |
|
|
-font {
|
| 933 |
|
|
$widgets(entry) configure -font $newValue
|
| 934 |
|
|
$widgets(listbox) configure -font $newValue
|
| 935 |
|
|
}
|
| 936 |
|
|
|
| 937 |
|
|
-foreground {
|
| 938 |
|
|
$widgets(entry) configure -foreground $newValue
|
| 939 |
|
|
$widgets(button) configure -foreground $newValue
|
| 940 |
|
|
$widgets(listbox) configure -foreground $newValue
|
| 941 |
|
|
}
|
| 942 |
|
|
|
| 943 |
|
|
-height {
|
| 944 |
|
|
$widgets(listbox) configure -height $newValue
|
| 945 |
|
|
}
|
| 946 |
|
|
|
| 947 |
|
|
-highlightbackground {
|
| 948 |
|
|
$widgets(frame) configure -highlightbackground $newValue
|
| 949 |
|
|
}
|
| 950 |
|
|
|
| 951 |
|
|
-highlightthickness {
|
| 952 |
|
|
$widgets(frame) configure -highlightthickness $newValue
|
| 953 |
|
|
}
|
| 954 |
|
|
|
| 955 |
|
|
-image {
|
| 956 |
|
|
if {[string length $newValue] > 0} {
|
| 957 |
|
|
$widgets(button) configure -image $newValue
|
| 958 |
|
|
} else {
|
| 959 |
|
|
$widgets(button) configure -image ::combobox::bimage
|
| 960 |
|
|
}
|
| 961 |
|
|
}
|
| 962 |
|
|
|
| 963 |
|
|
-maxheight {
|
| 964 |
|
|
# computeGeometry may dork with the actual height
|
| 965 |
|
|
# of the listbox, so let's undork it
|
| 966 |
|
|
$widgets(listbox) configure -height $options(-height)
|
| 967 |
|
|
}
|
| 968 |
|
|
|
| 969 |
|
|
-relief {
|
| 970 |
|
|
$widgets(frame) configure -relief $newValue
|
| 971 |
|
|
}
|
| 972 |
|
|
|
| 973 |
|
|
-selectbackground {
|
| 974 |
|
|
$widgets(entry) configure -selectbackground $newValue
|
| 975 |
|
|
$widgets(listbox) configure -selectbackground $newValue
|
| 976 |
|
|
}
|
| 977 |
|
|
|
| 978 |
|
|
-selectborderwidth {
|
| 979 |
|
|
$widgets(entry) configure -selectborderwidth $newValue
|
| 980 |
|
|
$widgets(listbox) configure -selectborderwidth $newValue
|
| 981 |
|
|
}
|
| 982 |
|
|
|
| 983 |
|
|
-selectforeground {
|
| 984 |
|
|
$widgets(entry) configure -selectforeground $newValue
|
| 985 |
|
|
$widgets(listbox) configure -selectforeground $newValue
|
| 986 |
|
|
}
|
| 987 |
|
|
|
| 988 |
|
|
-state {
|
| 989 |
|
|
if {$newValue == "normal"} {
|
| 990 |
|
|
# it's enabled
|
| 991 |
|
|
set editable [::combobox::getBoolean \
|
| 992 |
|
|
$options(-editable)]
|
| 993 |
|
|
if {$editable} {
|
| 994 |
|
|
$widgets(entry) configure -state normal -takefocus 1
|
| 995 |
|
|
}
|
| 996 |
|
|
$widgets(entry) configure -fg $::combobox::enabledfg
|
| 997 |
|
|
} else {
|
| 998 |
|
|
# it's disabled
|
| 999 |
|
|
$widgets(entry) configure -state disabled -takefocus 0\
|
| 1000 |
|
|
-fg $::combobox::disabledfg
|
| 1001 |
|
|
}
|
| 1002 |
|
|
}
|
| 1003 |
|
|
|
| 1004 |
|
|
-textvariable {
|
| 1005 |
|
|
# destroy our trace on the old value, if any
|
| 1006 |
|
|
if {[string length $oldValue] > 0} {
|
| 1007 |
|
|
trace vdelete $oldValue w \
|
| 1008 |
|
|
[list ::combobox::vTrace $widgets(this)]
|
| 1009 |
|
|
}
|
| 1010 |
|
|
# set up a trace on the new value, if any. Also, set
|
| 1011 |
|
|
# the value of the widget to the current value of
|
| 1012 |
|
|
# the variable
|
| 1013 |
|
|
|
| 1014 |
|
|
set variable ::$newValue
|
| 1015 |
|
|
if {[string length $newValue] > 0} {
|
| 1016 |
|
|
if {[info exists $variable]} {
|
| 1017 |
|
|
::combobox::setValue $widgets(this) [set $variable]
|
| 1018 |
|
|
}
|
| 1019 |
|
|
trace variable $variable w \
|
| 1020 |
|
|
[list ::combobox::vTrace $widgets(this)]
|
| 1021 |
|
|
}
|
| 1022 |
|
|
}
|
| 1023 |
|
|
|
| 1024 |
|
|
-value {
|
| 1025 |
|
|
::combobox::setValue $widgets(this) $newValue
|
| 1026 |
|
|
}
|
| 1027 |
|
|
|
| 1028 |
|
|
-width {
|
| 1029 |
|
|
$widgets(entry) configure -width $newValue
|
| 1030 |
|
|
$widgets(listbox) configure -width $newValue
|
| 1031 |
|
|
}
|
| 1032 |
|
|
|
| 1033 |
|
|
default {
|
| 1034 |
|
|
error "unknown option \"$option\""
|
| 1035 |
|
|
}
|
| 1036 |
|
|
}
|
| 1037 |
|
|
}
|
| 1038 |
|
|
}
|
| 1039 |
|
|
|
| 1040 |
|
|
# this proc is called whenever the user changes the value of
|
| 1041 |
|
|
# the -textvariable associated with a widget
|
| 1042 |
|
|
proc ::combobox::vTrace {w args} {
|
| 1043 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 1044 |
|
|
upvar ::combobox::${w}::options options
|
| 1045 |
|
|
upvar ::combobox::${w}::ignoreTrace ignoreTrace
|
| 1046 |
|
|
|
| 1047 |
|
|
if {[info exists ignoreTrace]} return
|
| 1048 |
|
|
::combobox::setValue $widgets(this) [set ::$options(-textvariable)]
|
| 1049 |
|
|
}
|
| 1050 |
|
|
|
| 1051 |
|
|
# sets the value of the combobox and calls the -command, if defined
|
| 1052 |
|
|
proc ::combobox::setValue {w newValue {call 1}} {
|
| 1053 |
|
|
upvar ::combobox::${w}::widgets widgets
|
| 1054 |
|
|
upvar ::combobox::${w}::options options
|
| 1055 |
|
|
upvar ::combobox::${w}::ignoreTrace ignoreTrace
|
| 1056 |
|
|
upvar ::combobox::${w}::oldValue oldValue
|
| 1057 |
|
|
|
| 1058 |
|
|
set editable [::combobox::getBoolean $options(-editable)]
|
| 1059 |
|
|
|
| 1060 |
|
|
# update the widget, no matter what. This might cause a few
|
| 1061 |
|
|
# false triggers on a trace of the associated textvariable,
|
| 1062 |
|
|
# but that's a chance we'll have to take.
|
| 1063 |
|
|
$widgets(entry) configure -state normal
|
| 1064 |
|
|
$widgets(entry) delete 0 end
|
| 1065 |
|
|
$widgets(entry) insert 0 $newValue
|
| 1066 |
|
|
if {!$editable || $options(-state) != "normal"} {
|
| 1067 |
|
|
$widgets(entry) configure -state disabled
|
| 1068 |
|
|
}
|
| 1069 |
|
|
|
| 1070 |
|
|
# set the associated textvariable
|
| 1071 |
|
|
if {[string length $options(-textvariable)] > 0} {
|
| 1072 |
|
|
set ignoreTrace 1 ;# so we don't get in a recursive loop
|
| 1073 |
|
|
uplevel \#0 [list set $options(-textvariable) $newValue]
|
| 1074 |
|
|
unset ignoreTrace
|
| 1075 |
|
|
}
|
| 1076 |
|
|
|
| 1077 |
|
|
# Call the -command, if it exists.
|
| 1078 |
|
|
# We could optionally check to see if oldValue == newValue
|
| 1079 |
|
|
# first, but sometimes we want to execute the command even
|
| 1080 |
|
|
# if the value didn't change...
|
| 1081 |
|
|
# CYGNUS LOCAL
|
| 1082 |
|
|
# Call it after idle, so the menu gets unposted BEFORE
|
| 1083 |
|
|
# the command gets run... Make sure to clean up the afters
|
| 1084 |
|
|
# so you don't try to access a dead widget...
|
| 1085 |
|
|
|
| 1086 |
|
|
if {$call && [string length $options(-command)] > 0} {
|
| 1087 |
|
|
if {[info exists widgets(after)]} {
|
| 1088 |
|
|
after cancel $widgets(after)
|
| 1089 |
|
|
}
|
| 1090 |
|
|
set widgets(after) [after idle $options(-command) \
|
| 1091 |
|
|
[list $widgets(this) $newValue]\;\
|
| 1092 |
|
|
unset ::combobox::${w}::widgets(after)]
|
| 1093 |
|
|
}
|
| 1094 |
|
|
set oldValue $newValue
|
| 1095 |
|
|
}
|
| 1096 |
|
|
|
| 1097 |
|
|
# returns the value of a (presumably) boolean string (ie: it should
|
| 1098 |
|
|
# do the right thing if the string is "yes", "no", "true", 1, etc
|
| 1099 |
|
|
proc ::combobox::getBoolean {value {errorValue 1}} {
|
| 1100 |
|
|
if {[catch {expr {([string trim $value])?1:0}} res]} {
|
| 1101 |
|
|
return $errorValue
|
| 1102 |
|
|
} else {
|
| 1103 |
|
|
return $res
|
| 1104 |
|
|
}
|
| 1105 |
|
|
}
|
| 1106 |
|
|
|
| 1107 |
|
|
# computes the combobox widget name based on the name of one of
|
| 1108 |
|
|
# it's children widgets.. Not presently used, but might come in
|
| 1109 |
|
|
# handy...
|
| 1110 |
|
|
proc ::combobox::widgetName {w} {
|
| 1111 |
|
|
while {$w != "."} {
|
| 1112 |
|
|
if {[winfo class $w] == "Combobox"} {
|
| 1113 |
|
|
return $w
|
| 1114 |
|
|
}
|
| 1115 |
|
|
set w [winfo parent $w]
|
| 1116 |
|
|
}
|
| 1117 |
|
|
error "internal error: $w is not a child of a combobox"
|
| 1118 |
|
|
}
|
