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