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301 lines
7.0 KiB
301 lines
7.0 KiB
# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
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#
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# $Id: Select.tcl,v 1.3 2001/12/09 05:04:02 idiscovery Exp $
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#
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# Select.tcl --
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#
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# Implement the tixSelect widget.
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#
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# Copyright (c) 1993-1999 Ioi Kim Lam.
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# Copyright (c) 2000-2001 Tix Project Group.
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#
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# See the file "license.terms" for information on usage and redistribution
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# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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#
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tixWidgetClass tixSelect {
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-superclass tixLabelWidget
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-classname TixSelect
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-method {
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add button invoke
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}
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-flag {
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-allowzero -buttontype -command -disablecallback -orientation
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-orient -padx -pady -radio -selectedbg -state -validatecmd
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-value -variable
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}
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-forcecall {
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-variable -state
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}
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-static {
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-allowzero -orientation -padx -pady -radio
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}
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-configspec {
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{-allowzero allowZero AllowZero 0 tixVerifyBoolean}
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{-buttontype buttonType ButtonType button}
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{-command command Command ""}
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{-disablecallback disableCallback DisableCallback 0 tixVerifyBoolean}
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{-orientation orientation Orientation horizontal}
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{-padx padx Pad 0}
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{-pady pady Pad 0}
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{-radio radio Radio 0 tixVerifyBoolean}
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{-selectedbg selectedBg SelectedBg gray}
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{-state state State normal}
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{-validatecmd validateCmd ValidateCmd ""}
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{-value value Value ""}
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{-variable variable Variable ""}
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}
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-alias {
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{-orient -orientation}
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}
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-default {
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{*frame.borderWidth 1}
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{*frame.relief sunken}
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{*Button.borderWidth 2}
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{*Button.highlightThickness 0}
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}
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}
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proc tixSelect:InitWidgetRec {w} {
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upvar #0 $w data
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tixChainMethod $w InitWidgetRec
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set data(items) ""
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set data(buttonbg) ""
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set data(varInited) 0
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}
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#----------------------------------------------------------------------
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# CONFIG OPTIONS
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#----------------------------------------------------------------------
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proc tixSelect:config-state {w arg} {
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upvar #0 $w data
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if {$arg == "disabled"} {
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foreach item $data(items) {
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$data(w:$item) config -state disabled -relief raised \
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-bg $data(buttonbg)
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}
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if {![info exists data(labelFg)]} {
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set data(labelFg) [$data(w:label) cget -foreground]
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catch {
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$data(w:label) config -fg [tix option get disabled_fg]
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}
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}
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} else {
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foreach item $data(items) {
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if {[lsearch $data(-value) $item] != -1} {
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# This button is selected
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#
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$data(w:$item) config -relief sunken -bg $data(-selectedbg) \
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-state normal
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} else {
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$data(w:$item) config -relief raised -bg $data(buttonbg) \
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-command "$w invoke $item" -state normal
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}
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}
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if {[info exists data(labelFg)]} {
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catch {
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$data(w:label) config -fg $data(labelFg)
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}
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unset data(labelFg)
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}
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}
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return ""
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}
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proc tixSelect:config-variable {w arg} {
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upvar #0 $w data
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set oldValue $data(-value)
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if {[tixVariable:ConfigVariable $w $arg]} {
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# The value of data(-value) is changed if tixVariable:ConfigVariable
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# returns true
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set newValue $data(-value)
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set data(-value) $oldValue
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tixSelect:config-value $w $newValue
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}
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catch {
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unset data(varInited)
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}
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set data(-variable) $arg
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}
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proc tixSelect:config-value {w value} {
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upvar #0 $w data
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# sanity checking
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#
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foreach item $value {
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if {[lsearch $data(items) $item] == "-1"} {
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error "subwidget \"$item\" does not exist"
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}
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}
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tixSelect:SetValue $w $value
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}
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#----------------------------------------------------------------------
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# WIDGET COMMANDS
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#----------------------------------------------------------------------
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proc tixSelect:add {w name args} {
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upvar #0 $w data
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set data(w:$name) [eval $data(-buttontype) $data(w:frame).$name -command \
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[list "$w invoke $name"] -takefocus 0 $args]
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if {$data(-orientation) == "horizontal"} {
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pack $data(w:$name) -side left -expand yes -fill y\
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-padx $data(-padx) -pady $data(-pady)
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} else {
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pack $data(w:$name) -side top -expand yes -fill x\
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-padx $data(-padx) -pady $data(-pady)
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}
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if {$data(-state) == "disabled"} {
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$data(w:$name) config -relief raised -state disabled
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}
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# find out the background of the buttons
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#
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if {$data(buttonbg) == ""} {
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set data(buttonbg) [lindex [$data(w:$name) config -background] 4]
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}
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lappend data(items) $name
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}
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# Obsolete command
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#
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proc tixSelect:button {w name args} {
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upvar #0 $w data
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if {$args != ""} {
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return [eval $data(w:$name) $args]
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} else {
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return $w.$name
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}
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}
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# This is called when a button is invoked
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#
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proc tixSelect:invoke {w button} {
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upvar #0 $w data
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if {$data(-state) != "normal"} {
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return
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}
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set newValue $data(-value)
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if {[lsearch $data(-value) $button] != -1} {
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# This button was selected
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#
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if {[llength $data(-value)] > 1 || [tixGetBoolean $data(-allowzero)]} {
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# Take the button from the selected list
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#
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set newValue ""
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foreach item $data(-value) {
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if {$item != $button} {
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lappend newValue $item
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}
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}
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}
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} else {
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# This button was not selected
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#
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if {[tixGetBoolean $data(-radio)]} {
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# The button become the sole item in the list
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#
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set newValue [list $button]
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} else {
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# Add this button into the list
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#
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lappend newValue $button
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}
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}
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if {$newValue != $data(-value)} {
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tixSelect:SetValue $w $newValue
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}
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}
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#----------------------------------------------------------------------
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# Private functions
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#----------------------------------------------------------------------
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proc tixSelect:SetValue {w newValue {noUpdate 0}} {
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upvar #0 $w data
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set oldValue $data(-value)
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if {$data(-validatecmd) != ""} {
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set data(-value) [tixEvalCmdBinding $w $data(-validatecmd) "" $newValue]
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} else {
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if {[tixGetBoolean $data(-radio)] && [llength $newValue] > 1} {
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error "cannot choose more than one items in a radio box"
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}
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if {![tixGetBoolean $data(-allowzero)] && [llength $newValue] == 0} {
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error "empty selection not allowed"
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}
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set data(-value) $newValue
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}
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if {! $noUpdate} {
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tixVariable:UpdateVariable $w
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}
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# Reset all to be unselected
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#
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foreach item $data(items) {
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if {[lsearch $data(-value) $item] == -1} {
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# Is unselected
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#
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if {[lsearch $oldValue $item] != -1} {
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# was selected
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# -> popup the button, call command
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#
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$data(w:$item) config -relief raised -bg $data(buttonbg)
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tixSelect:CallCommand $w $item 0
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}
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} else {
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# Is selected
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#
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if {[lsearch $oldValue $item] == -1} {
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# was unselected
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# -> push down the button, call command
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#
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$data(w:$item) config -relief sunken -bg $data(-selectedbg)
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tixSelect:CallCommand $w $item 1
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}
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}
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}
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}
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proc tixSelect:CallCommand {w name value} {
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upvar #0 $w data
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if {!$data(-disablecallback) && $data(-command) != ""} {
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if {![info exists data(varInited)]} {
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set bind(specs) "name value"
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set bind(name) $name
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set bind(value) $value
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tixEvalCmdBinding $w $data(-command) bind $name $value
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}
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}
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}
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proc tixSelect:Destructor {w} {
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tixVariable:DeleteVariable $w
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# Chain this to the superclass
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#
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tixChainMethod $w Destructor
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}
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