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Text File | 1999-01-26 | 33.4 KB | 1,534 lines |
- # tixCombobox --
- #
- # A combobox widget is basically a listbox widget with an entry
- # widget.
- #
- #
- # Copyright (c) 1996, Expert Interface Technologies
- #
- # See the file "license.terms" for information on usage and redistribution
- # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-
- tixWidgetClass tixComboBox {
- -classname TixComboBox
- -superclass tixLabelWidget
- -method {
- addhistory align appendhistory flash invoke insert pick popdown
- }
- -flag {
- -anchor -arrowbitmap -browsecmd -command -crossbitmap
- -disablecallback -disabledforeground -dropdown -editable
- -fancy -grab -histlimit -historylimit -history -listcmd
- -listwidth -prunehistory -selection -selectmode -state
- -tickbitmap -validatecmd -value -variable
- }
- -static {
- -dropdown -fancy
- }
- -forcecall {
- -variable -selectmode -state
- }
- -configspec {
- {-arrowbitmap arrowBitmap ArrowBitmap ""}
- {-anchor anchor Anchor w}
- {-browsecmd browseCmd BrowseCmd ""}
- {-command command Command ""}
- {-crossbitmap crossBitmap CrossBitmap ""}
- {-disablecallback disableCallback DisableCallback 0 tixVerifyBoolean}
- {-disabledforeground disabledForeground DisabledForeground #606060}
- {-dropdown dropDown DropDown true tixVerifyBoolean}
- {-editable editable Editable false tixVerifyBoolean}
- {-fancy fancy Fancy false tixVerifyBoolean}
- {-grab grab Grab global}
- {-listcmd listCmd ListCmd ""}
- {-listwidth listWidth ListWidth ""}
- {-historylimit historyLimit HistoryLimit ""}
- {-history history History false tixVerifyBoolean}
- {-prunehistory pruneHistory PruneHistory true tixVerifyBoolean}
- {-selectmode selectMode SelectMode browse}
- {-selection selection Selection ""}
- {-state state State normal}
- {-validatecmd validateCmd ValidateCmd ""}
- {-value value Value ""}
- {-variable variable Variable ""}
- {-tickbitmap tickBitmap TickBitmap ""}
- }
- -alias {
- {-histlimit -historylimit}
- }
- -default {
- {*Entry.relief sunken}
- {*TixScrolledListBox.scrollbar auto}
- {*Listbox.exportSelection false}
- {*Listbox.takeFocus false}
- {*shell.borderWidth 2}
- {*shell.relief raised}
- {*shell.cursor arrow}
- {*Button.anchor c}
- {*Button.borderWidth 1}
- {*Button.highlightThickness 0}
- {*Button.padX 0}
- {*Button.padY 0}
- {*tick.width 18}
- {*tick.height 18}
- {*cross.width 18}
- {*cross.height 18}
- {*arrow.anchor c}
- {*arrow.width 15}
- {*arrow.height 18}
- {*Entry.background #c3c3c3}
- {*Label.font -Adobe-Helvetica-Bold-R-Normal--*-120-*-*-*-*-*-*}
- }
- }
-
- # States: normal numbers: for dropdown style
- # d+digit(s) : for non-dropdown style
- #
- proc tixComboBox:InitWidgetRec {w} {
- upvar #0 $w data
-
- tixChainMethod $w InitWidgetRec
-
- set data(curIndex) ""
- set data(varInited) 0
- set data(state) none
- set data(ignore) 0
-
- if {$data(-history)} {
- set data(-editable) 1
- }
-
- if ![string compare $data(-arrowbitmap) ""] {
- set data(-arrowbitmap) [tix getbitmap cbxarrow]
- }
- if ![string compare $data(-crossbitmap) ""] {
- set data(-crossbitmap) [tix getbitmap cross]
- }
- if ![string compare $data(-tickbitmap) ""] {
- set data(-tickbitmap) [tix getbitmap tick]
- }
- }
-
- proc tixComboBox:ConstructFramedWidget {w frame} {
- upvar #0 $w data
-
- tixChainMethod $w ConstructFramedWidget $frame
-
- if {$data(-dropdown)} {
- tixComboBox:ConstructEntryFrame $w $frame
- tixComboBox:ConstructListShell $w
- } else {
- set f1 [frame $frame.f1]
- set f2 [frame $frame.f2]
-
- tixComboBox:ConstructEntryFrame $w $f1
- tixComboBox:ConstructListFrame $w $f2
- pack $f1 -side top -pady 2 -fill x
- pack $f2 -side top -pady 2 -fill both -expand yes
- }
- }
-
- proc tixComboBox:ConstructEntryFrame {w frame} {
- upvar #0 $w data
-
- # (1) The entry
- #
- set data(w:entry) [entry $frame.entry]
-
- if {!$data(-editable)} {
- set bg [$w cget -bg]
- $data(w:entry) config -bg $bg -state disabled -takefocus 1
- }
-
- # This is used during "config-state"
- #
- set data(entryfg) [$data(w:entry) cget -fg]
-
- # (2) The dropdown button, not necessary when not in dropdown mode
- #
- set data(w:arrow) [button $frame.arrow -bitmap $data(-arrowbitmap)]
- if {!$data(-dropdown)} {
- set xframe [frame $frame.xframe -width 19]
- }
-
- # (3) The fancy tick and cross buttons
- #
- if {$data(-fancy)} {
- if {$data(-editable)} {
- set data(w:cross) [button $frame.cross -bitmap $data(-crossbitmap)]
- set data(w:tick) [button $frame.tick -bitmap $data(-tickbitmap)]
-
- pack $frame.cross -side left -padx 1
- pack $frame.tick -side left -padx 1
- } else {
- set data(w:tick) [button $frame.tick -bitmap $data(-tickbitmap)]
- pack $frame.tick -side left -padx 1
- }
- }
-
- if {$data(-dropdown)} {
- pack $data(w:arrow) -side right -padx 1
- foreach wid "$data(w:frame) $data(w:label)" {
- tixAddBindTag $wid TixComboWid
- tixSetMegaWidget $wid $w TixComboBox
- }
- } else {
- pack $xframe -side right -padx 1
- }
- pack $frame.entry -side right -fill x -expand yes -padx 1
- }
-
- proc tixComboBox:ConstructListShell {w} {
- upvar #0 $w data
-
- # Create the shell and the list
- #------------------------------
- set data(w:shell) [menu $w.shell -bd 2 -relief raised -tearoff 0]
- wm overrideredirect $data(w:shell) 1
- wm withdraw $data(w:shell)
-
- set data(w:slistbox) [tixScrolledListBox $data(w:shell).slistbox \
- -anchor $data(-anchor) \
- -options {listbox.selectMode "browse"}]
-
- set data(w:listbox) [$data(w:slistbox) subwidget listbox]
-
- pack $data(w:slistbox) -expand yes -fill both -padx 2 -pady 2
- }
-
- proc tixComboBox:ConstructListFrame {w frame} {
- upvar #0 $w data
-
- set data(w:slistbox) [tixScrolledListBox $frame.slistbox \
- -anchor $data(-anchor)]
-
- set data(w:listbox) [$data(w:slistbox) subwidget listbox]
-
- pack $data(w:slistbox) -expand yes -fill both
- }
-
-
- proc tixComboBox:SetBindings {w} {
- upvar #0 $w data
-
- tixChainMethod $w SetBindings
-
- # (1) Fix the bindings for the combobox
- #
- bindtags $w "$w TixComboBox [winfo toplevel $w] all"
-
- # (2) The entry subwidget
- #
- tixSetMegaWidget $data(w:entry) $w TixComboBox
-
- bindtags $data(w:entry) [list $data(w:entry) Entry TixComboEntry\
- TixComboWid [winfo toplevel $data(w:entry)] all]
-
- # (3) The listbox and slistbox
- #
- $data(w:slistbox) config -browsecmd \
- "tixComboBox:LbBrowse $w"
- $data(w:slistbox) config -command\
- "tixComboBox:LbCommand $w"
- $data(w:listbox) config -takefocus 0
-
- tixAddBindTag $data(w:listbox) TixComboLb
- tixAddBindTag $data(w:slistbox) TixComboLb
- tixSetMegaWidget $data(w:listbox) $w TixComboBox
- tixSetMegaWidget $data(w:slistbox) $w TixComboBox
-
- # (4) The buttons
- #
- if {$data(-dropdown)} {
- $data(w:arrow) config -takefocus 0
- tixAddBindTag $data(w:arrow) TixComboArrow
- tixSetMegaWidget $data(w:arrow) $w TixComboBox
-
- bind $data(w:root) <1> "tixComboBox:RootDown $w"
- bind $data(w:root) <ButtonRelease-1> "tixComboBox:RootUp $w"
- }
-
- if {$data(-fancy)} {
- if {$data(-editable)} {
- $data(w:cross) config -command "tixComboBox:CrossBtn $w" \
- -takefocus 0
- }
- $data(w:tick) config -command "tixComboBox:Invoke $w" -takefocus 0
- }
-
- if {$data(-dropdown)} {
- set data(state) 0
- } else {
- set data(state) n0
- }
- }
-
- proc tixComboBoxBind {} {
- #----------------------------------------------------------------------
- # The class bindings for the TixComboBox
- #
- tixBind TixComboBox <Escape> {
- if [tixComboBox:EscKey %W] {
- break
- }
- }
- tixBind TixComboBox <Configure> {
- tixWidgetDoWhenIdle tixComboBox:align %W
- }
- # Only the two "linear" detail_fields are for tabbing (moving) among
- # widgets inside the same toplevel. Other detail_fields are sort
- # of irrelevant
- #
- tixBind TixComboBox <FocusOut> {
- if {![string compare %d NotifyNonlinear] ||
- ![string compare %d NotifyNonlinearVirtual]} {
-
- if [info exists %W(cancelTab)] {
- unset %W(cancelTab)
- } else {
- if [string compare [set %W(-state)] disabled] {
- if [string compare [set %W(-selection)] [set %W(-value)]] {
- tixComboBox:Invoke %W
- }
- }
- }
- }
- }
- tixBind TixComboBox <FocusIn> {
- if {[tixStrEq %d NotifyNonlinear] ||
- [tixStrEq %d NotifyNonlinearVirtual]} {
-
- focus [%W subwidget entry]
- [set %W(w:entry)] selection from 0
- [set %W(w:entry)] selection to end
- }
- }
-
- #----------------------------------------------------------------------
- # The class tixBindings for the arrow button widget inside the TixComboBox
- #
-
- tixBind TixComboArrow <1> {
- tixComboBox:ArrowDown [tixGetMegaWidget %W TixComboBox]
- }
- tixBind TixComboArrow <ButtonRelease-1> {
- tixComboBox:ArrowUp [tixGetMegaWidget %W TixComboBox]
- }
- tixBind TixComboArrow <Escape> {
- if [tixComboBox:EscKey [tixGetMegaWidget %W TixComboBox]] {
- break
- }
- }
-
-
- #----------------------------------------------------------------------
- # The class tixBindings for the entry widget inside the TixComboBox
- #
- tixBind TixComboEntry <Up> {
- tixComboBox:EntDirKey [tixGetMegaWidget %W TixComboBox] up
- }
- tixBind TixComboEntry <Down> {
- tixComboBox:EntDirKey [tixGetMegaWidget %W TixComboBox] down
- }
- tixBind TixComboEntry <Prior> {
- tixComboBox:EntDirKey [tixGetMegaWidget %W TixComboBox] pageup
- }
- tixBind TixComboEntry <Next> {
- tixComboBox:EntDirKey [tixGetMegaWidget %W TixComboBox] pagedown
- }
- tixBind TixComboEntry <Return> {
- tixComboBox:EntReturnKey [tixGetMegaWidget %W TixComboBox]
- }
- tixBind TixComboEntry <KeyPress> {
- tixComboBox:EntKeyPress [tixGetMegaWidget %W TixComboBox]
- }
- tixBind TixComboEntry <Escape> {
- if [tixComboBox:EscKey [tixGetMegaWidget %W TixComboBox]] {
- break
- }
- }
- tixBind TixComboEntry <Tab> {
- if {[set [tixGetMegaWidget %W TixComboBox](-state)] != "disabled"} {
- if [tixComboBox:EntTab [tixGetMegaWidget %W TixComboBox]] {
- break
- }
- }
- }
- tixBind TixComboEntry <1> {
- if {[set [tixGetMegaWidget %W TixComboBox](-state)] != "disabled"} {
- focus %W
- }
- }
- tixBind TixComboEntry <ButtonRelease-2> {
- tixComboBox:EntKeyPress [tixGetMegaWidget %W TixComboBox]
- }
-
- #----------------------------------------------------------------------
- # The class bindings for the listbox subwidget
- #
-
- tixBind TixComboWid <Escape> {
- if [tixComboBox:EscKey [tixGetMegaWidget %W TixComboBox]] {
- break
- }
- }
-
- #----------------------------------------------------------------------
- # The class bindings for some widgets inside ComboBox
- #
- tixBind TixComboWid <ButtonRelease-1> {
- tixComboBox:WidUp [tixGetMegaWidget %W TixComboBox]
- }
- tixBind TixComboWid <Escape> {
- if [tixComboBox:EscKey [tixGetMegaWidget %W TixComboBox]] {
- break
- }
- }
- }
-
- #----------------------------------------------------------------------
- # Cooked events
- #----------------------------------------------------------------------
- proc tixComboBox:ArrowDown {w} {
- upvar #0 $w data
-
- if ![string compare $data(-state) disabled] {
- return
- }
-
- case $data(state) {
- {0} {
- tixComboBox:GoState 1 $w
- }
- {2} {
- tixComboBox:GoState 19 $w
- }
- default {
- tixComboBox:StateError $w
- }
- }
- }
-
- proc tixComboBox:ArrowUp {w} {
- upvar #0 $w data
-
- case $data(state) {
- {1} {
- tixComboBox:GoState 2 $w
- }
- {19} {
- # data(ignore) was already set in state 19
- tixComboBox:GoState 4 $w
- }
- {5} {
- tixComboBox:GoState 13 $w
- }
- default {
- tixComboBox:StateError $w
- }
- }
- }
-
- proc tixComboBox:RootDown {w} {
- upvar #0 $w data
-
- case $data(state) {
- {0} {
- # Ignore
- }
- {2} {
- tixComboBox:GoState 3 $w
- }
- default {
- tixComboBox:StateError $w
- }
- }
- }
-
- proc tixComboBox:RootUp {w} {
- upvar #0 $w data
-
- case $data(state) {
- {1} {
- tixComboBox:GoState 12 $w
- }
- {3} {
- # data(ignore) was already set in state 3
- tixComboBox:GoState 4 $w
- }
- {5} {
- tixComboBox:GoState 7 $w
- }
- default {
- tixComboBox:StateError $w
- }
- }
- }
-
- proc tixComboBox:WidUp {w} {
- upvar #0 $w data
-
- case $data(state) {
- {1} {
- tixComboBox:GoState 12 $w
- }
- {5} {
- tixComboBox:GoState 13 $w
- }
- }
- }
-
- proc tixComboBox:LbBrowse {w args} {
- upvar #0 $w data
-
- set event [tixEvent type]
- set x [tixEvent flag x]
- set y [tixEvent flag y]
- set X [tixEvent flag X]
- set Y [tixEvent flag Y]
-
- if ![string compare $data(-state) disabled] {
- return
- }
-
- case $event {
- <1> {
- case $data(state) {
- {2} {
- tixComboBox:GoState 5 $w $x $y $X $Y
- }
- {5} {
- tixComboBox:GoState 5 $w $x $y $X $Y
- }
- {n0} {
- tixComboBox:GoState n6 $w $x $y $X $Y
- }
- default {
- tixComboBox:StateError $w
- }
- }
- }
- <ButtonRelease-1> {
- case $data(state) {
- {5} {
- tixComboBox:GoState 6 $w $x $y $X $Y
- }
- {n6} {
- tixComboBox:GoState n0 $w
- }
- default {
- tixComboBox:StateError $w
- }
- }
- }
- default {
- # Must be a motion event
- case $data(state) {
- {1} {
- tixComboBox:GoState 9 $w $x $y $X $Y
- }
- {5} {
- tixComboBox:GoState 5 $w $x $y $X $Y
- }
- {n6} {
- tixComboBox:GoState n6 $w $x $y $X $Y
- }
- default {
- tixComboBox:StateError $w
- }
- }
- }
- }
- }
-
- proc tixComboBox:LbCommand {w} {
- upvar #0 $w data
-
- case $data(state) {
- {n0} {
- tixComboBox:GoState n1 $w
- }
- }
- }
-
- #----------------------------------------------------------------------
- # General keyboard event
-
- # returns 1 if the combobox is in some special state and the Escape key
- # shouldn't be handled by the toplevel bind tag. As a result, when a combobox
- # is popped up in a dialog box, Escape will popdown the combo. If the combo
- # is not popped up, Escape will invoke the toplevel bindtag (which can
- # pop down the dialog box)
- #
- proc tixComboBox:EscKey {w} {
- upvar #0 $w data
-
- if ![string compare $data(-state) disabled] {
- return
- }
-
- case $data(state) {
- {0} {
- tixComboBox:GoState 17 $w
- }
- {2} {
- tixComboBox:GoState 16 $w
- return 1
- }
- {n0} {
- tixComboBox:GoState n4 $w
- }
- default {
- # ignore
- return 1
- }
- }
-
- return 0
- }
-
- #----------------------------------------
- # Keyboard events
- #----------------------------------------
- proc tixComboBox:EntDirKey {w dir} {
- upvar #0 $w data
-
- if ![string compare $data(-state) disabled] {
- return
- }
-
- case $data(state) {
- {0} {
- tixComboBox:GoState 10 $w $dir
- }
- {2} {
- tixComboBox:GoState 11 $w $dir
- }
- {5} {
- # ignore
- }
- {n0} {
- tixComboBox:GoState n3 $w $dir
- }
- }
- }
-
- proc tixComboBox:EntReturnKey {w} {
- upvar #0 $w data
-
- if ![string compare $data(-state) disabled] {
- return
- }
-
- case $data(state) {
- {0} {
- tixComboBox:GoState 14 $w
- }
- {2} {
- tixComboBox:GoState 15 $w
- }
- {5} {
- # ignore
- }
- {n0} {
- tixComboBox:GoState n1 $w
- }
- }
- }
-
- # Return 1 == break from the binding == no keyboard focus traversal
- proc tixComboBox:EntTab {w} {
- upvar #0 $w data
-
- case $data(state) {
- {0} {
- tixComboBox:GoState 14 $w
- set data(cancelTab) ""
- return 0
- }
- {2} {
- tixComboBox:GoState 15 $w
- set data(cancelTab) ""
- return 0
- }
- {n0} {
- tixComboBox:GoState n1 $w
- set data(cancelTab) ""
- return 0
- }
- default {
- return 1
- }
- }
- }
-
- proc tixComboBox:EntKeyPress {w} {
- upvar #0 $w data
-
- if {!$data(-editable)} {
- return
- }
- if [tixStrEq $data(-state) disabled] {
- return
- }
-
- case $data(state) {
- {0 2 n0} {
- tixComboBox:ClearListboxSelection $w
- tixComboBox:SetSelection $w [$data(w:entry) get] 0 0
- }
-
- }
- }
-
- #----------------------------------------------------------------------
-
- proc tixComboBox:HandleDirKey {w dir} {
- upvar #0 $w data
-
- if [tixComboBox:CheckListboxSelection $w] {
- case $dir {
- "up" {
- tkListboxUpDown $data(w:listbox) -1
- set data(curIndex) [lindex [$data(w:listbox) curselection] 0]
- tixComboBox:SetSelectionFromListbox $w
- }
- "down" {
- tkListboxUpDown $data(w:listbox) 1
- set data(curIndex) [lindex [$data(w:listbox) curselection] 0]
- tixComboBox:SetSelectionFromListbox $w
- }
- "pageup" {
- $data(w:listbox) yview scroll -1 pages
- }
- "pagedown" {
- $data(w:listbox) yview scroll 1 pages
- }
- }
- } else {
- # There wasn't good selection in the listbox.
- #
- tixComboBox:SetSelectionFromListbox $w
- }
- }
-
- proc tixComboBox:Invoke {w} {
- upvar #0 $w data
-
- tixComboBox:SetValue $w $data(-selection)
- if ![winfo exists $w] {
- return
- }
-
- if {$data(-history)} {
- tixComboBox:addhistory $w $data(-value)
- set data(curIndex) 0
- }
- $data(w:entry) selection from 0
- $data(w:entry) selection to end
- $data(w:entry) icursor end
- }
-
- #----------------------------------------------------------------------
- # MAINTAINING THE -VALUE
- #----------------------------------------------------------------------
- proc tixComboBox:SetValue {w newValue {noUpdate 0} {updateEnt 1}} {
- upvar #0 $w data
-
- if {$data(-validatecmd) != ""} {
- set data(-value) [tixEvalCmdBinding $w $data(-validatecmd) "" $newValue]
- } else {
- set data(-value) $newValue
- }
-
- if {! $noUpdate} {
- tixVariable:UpdateVariable $w
- }
-
- if {$updateEnt} {
- if {!$data(-editable)} {
- $data(w:entry) delete 0 end
- $data(w:entry) insert 0 $data(-value)
- }
- }
-
- if {!$data(-disablecallback) && $data(-command) != ""} {
- if {![info exists data(varInited)]} {
- set bind(specs) {%V}
- set bind(%V) $data(-value)
-
- tixEvalCmdBinding $w $data(-command) bind $data(-value)
- if ![winfo exists $w] {
- # The user destroyed the window!
- return
- }
- }
- }
-
- set data(-selection) $data(-value)
- if {$updateEnt} {
- tixSetEntry $data(w:entry) $data(-value)
-
- if {$data(-anchor) == "e"} {
- tixComboBox:EntryAlignEnd $w
- }
- }
- }
-
- # markSel: should the all the text in the entry be highlighted?
- #
- proc tixComboBox:SetSelection {w value {markSel 1} {setent 1}} {
- upvar #0 $w data
-
- if {$setent} {
- tixSetEntry $data(w:entry) $value
- }
- set data(-selection) $value
-
- if {$data(-selectmode) == "browse"} {
- if {$markSel} {
- $data(w:entry) selection range 0 end
- }
- if {$data(-browsecmd) != ""} {
- set bind(specs) {%V}
- set bind(%V) [$data(w:entry) get]
- tixEvalCmdBinding $w $data(-browsecmd) bind [$data(w:entry) get]
- }
- } else {
- tixComboBox:SetValue $w $value 0 0
- }
- }
-
- proc tixComboBox:ClearListboxSelection {w} {
- upvar #0 $w data
-
- $data(w:listbox) selection clear 0 end
- }
-
- proc tixComboBox:UpdateListboxSelection {w index} {
- upvar #0 $w data
-
- if {$index != ""} {
- $data(w:listbox) selection set $index
- $data(w:listbox) selection anchor $index
- }
- }
-
-
- proc tixComboBox:Cancel {w} {
- upvar #0 $w data
-
- tixSetEntry $data(w:entry) $data(-value)
- tixComboBox:SetSelection $w $data(-value)
-
- if {"x[tixComboBox:LbGetSelection $w]" != "x$data(-selection)"} {
- tixComboBox:ClearListboxSelection $w
- }
- }
-
- proc tixComboBox:flash {w} {
- tixComboBox:BlinkEntry $w
- }
-
- # Make the entry blink when the user selects a choice
- #
- proc tixComboBox:BlinkEntry {w} {
- upvar #0 $w data
-
- if {![info exists data(entryBlacken)]} {
- set old_bg [$data(w:entry) cget -bg]
- set old_fg [$data(w:entry) cget -fg]
-
- $data(w:entry) config -fg $old_bg
- $data(w:entry) config -bg $old_fg
-
- set data(entryBlacken) 1
- after 50 tixComboBox:RestoreBlink $w [list $old_bg] [list $old_fg]
- }
- }
-
- proc tixComboBox:RestoreBlink {w old_bg old_fg} {
- upvar #0 $w data
-
- if {[info exists data(w:entry)] && [winfo exists $data(w:entry)]} {
- $data(w:entry) config -fg $old_fg
- $data(w:entry) config -bg $old_bg
- }
-
- if [info exists data(entryBlacken)] {
- unset data(entryBlacken)
- }
- }
-
- #----------------------------------------
- # Handle events inside the list box
- #----------------------------------------
-
- proc tixComboBox:LbIndex {w {flag ""}} {
- upvar #0 $w data
-
- set sel [lindex [$data(w:listbox) curselection] 0]
- if {$sel != ""} {
- return $sel
- } else {
- if {$flag == "emptyOK"} {
- return ""
- } else {
- return 0
- }
- }
- }
-
- #----------------------------------------------------------------------
- #
- # STATE MANIPULATION
- #
- #----------------------------------------------------------------------
- proc tixComboBox:GoState-0 {w} {
- upvar #0 $w data
- }
-
- proc tixComboBox:GoState-1 {w} {
- upvar #0 $w data
-
- tixComboBox:Popup $w
- }
-
- proc tixComboBox:GoState-2 {w} {
- upvar #0 $w data
-
- }
-
- proc tixComboBox:GoState-3 {w} {
- upvar #0 $w data
-
- set data(ignore) 1
- tixComboBox:Popdown $w
- }
-
- proc tixComboBox:GoState-4 {w} {
- upvar #0 $w data
-
- tixComboBox:Ungrab $w
- if {$data(ignore)} {
- tixComboBox:Cancel $w
- } else {
- tixComboBox:Invoke $w
- }
- tixComboBox:GoState 0 $w
- }
-
- proc tixComboBox:GoState-5 {w x y X Y} {
- upvar #0 $w data
-
- tixComboBox:LbSelect $w $x $y $X $Y
- }
-
- proc tixComboBox:GoState-6 {w x y X Y} {
- upvar #0 $w data
-
- tixComboBox:Popdown $w
-
- if [tixWithinWindow $data(w:shell) $X $Y] {
- set data(ignore) 0
- } else {
- set data(ignore) 1
- }
-
- tixComboBox:GoState 4 $w
- }
-
- proc tixComboBox:GoState-7 {w} {
- upvar #0 $w data
-
- tixComboBox:Popdown $w
- set data(ignore) 1
- catch {
- global tkPriv
- if {$tkPriv(afterId) != ""} {
- tkCancelRepeat
- }
- }
-
- set data(ignore) 1
- tixComboBox:GoState 4 $w
- }
-
- proc tixComboBox:GoState-9 {w x y X Y} {
- upvar #0 $w data
-
- catch {
- tkButtonUp $data(w:arrow)
- }
- tixComboBox:GoState 5 $w $x $y $X $Y
- }
-
- proc tixComboBox:GoState-10 {w dir} {
- upvar #0 $w data
-
- tixComboBox:Popup $w
- if {![tixComboBox:CheckListboxSelection $w]} {
- # There wasn't good selection in the listbox.
- #
- tixComboBox:SetSelectionFromListbox $w
- }
-
- tixComboBox:GoState 2 $w
- }
-
- proc tixComboBox:GoState-11 {w dir} {
- upvar #0 $w data
-
- tixComboBox:HandleDirKey $w $dir
-
- tixComboBox:GoState 2 $w
- }
-
- proc tixComboBox:GoState-12 {w} {
- upvar #0 $w data
-
- catch {
- tkButtonUp $data(w:arrow)
- }
-
- tixComboBox:GoState 2 $w
- }
-
- proc tixComboBox:GoState-13 {w} {
- upvar #0 $w data
-
- catch {
- global tkPriv
- if {$tkPriv(afterId) != ""} {
- tkCancelRepeat
- }
- }
- tixComboBox:GoState 2 $w
- }
-
- proc tixComboBox:GoState-14 {w} {
- upvar #0 $w data
-
- tixComboBox:Invoke $w
- tixComboBox:GoState 0 $w
- }
-
- proc tixComboBox:GoState-15 {w} {
- upvar #0 $w data
-
- tixComboBox:Popdown $w
- set data(ignore) 0
- tixComboBox:GoState 4 $w
- }
-
- proc tixComboBox:GoState-16 {w} {
- upvar #0 $w data
-
- tixComboBox:Popdown $w
- tixComboBox:Cancel $w
- set data(ignore) 1
- tixComboBox:GoState 4 $w
- }
-
- proc tixComboBox:GoState-17 {w} {
- upvar #0 $w data
-
- tixComboBox:Cancel $w
- tixComboBox:GoState 0 $w
- }
-
- proc tixComboBox:GoState-19 {w} {
- upvar #0 $w data
-
- if {"x$data(-selection)" != "x$data(-value)"} {
- set data(ignore) 0
- } else {
- set data(ignore) 1
- }
- tixComboBox:Popdown $w
- }
-
- #----------------------------------------------------------------------
- # Non-dropdown states
- #----------------------------------------------------------------------
- proc tixComboBox:GoState-n0 {w} {
- upvar #0 $w data
- }
-
- proc tixComboBox:GoState-n1 {w} {
- upvar #0 $w data
-
- tixComboBox:Invoke $w
- tixComboBox:GoState n0 $w
- }
-
- proc tixComboBox:GoState-n3 {w dir} {
- upvar #0 $w data
-
- tixComboBox:HandleDirKey $w $dir
- tixComboBox:GoState n0 $w
- }
-
- proc tixComboBox:GoState-n4 {w} {
- upvar #0 $w data
-
- tixComboBox:Cancel $w
- tixComboBox:GoState n0 $w
- }
-
- proc tixComboBox:GoState-n6 {w x y X Y} {
- upvar #0 $w data
-
- tixComboBox:LbSelect $w $x $y $X $Y
- }
-
- #----------------------------------------------------------------------
- # General State Manipulation
- #----------------------------------------------------------------------
- proc tixComboBox:GoState {s w args} {
- upvar #0 $w data
-
- tixComboBox:SetState $w $s
- eval tixComboBox:GoState-$s $w $args
- }
-
- proc tixComboBox:SetState {w s} {
- upvar #0 $w data
-
- # catch {puts [info level -2]}
- # puts "setting state $data(state) --> $s"
- set data(state) $s
- }
-
- proc tixComboBox:StateError {w} {
- upvar #0 $w data
-
- # error "wrong state $data(state)"
- }
-
- #----------------------------------------------------------------------
- # Listbox handling
- #----------------------------------------------------------------------
-
- # Set a selection if there isn't one. Returns true if there was already
- # a good selection inside the listbox
- #
- proc tixComboBox:CheckListboxSelection {w} {
- upvar #0 $w data
-
- if {[$data(w:listbox) curselection] == ""} {
- if {$data(curIndex) == ""} {
- set data(curIndex) 0
- }
-
- $data(w:listbox) activate $data(curIndex)
- $data(w:listbox) selection clear 0 end
- $data(w:listbox) selection set $data(curIndex)
- $data(w:listbox) see $data(curIndex)
- return 0
- } else {
- return 1
- }
- }
-
- proc tixComboBox:SetSelectionFromListbox {w} {
- upvar #0 $w data
-
- set string [$data(w:listbox) get $data(curIndex)]
- tixComboBox:SetSelection $w $string
- tixComboBox:UpdateListboxSelection $w $data(curIndex)
- }
-
- proc tixComboBox:LbGetSelection {w} {
- upvar #0 $w data
- set index [tixComboBox:LbIndex $w emptyOK]
-
- if {$index >=0} {
- return [$data(w:listbox) get $index]
- } else {
- return ""
- }
- }
-
- proc tixComboBox:LbSelect {w x y X Y} {
- upvar #0 $w data
-
- set index [tixComboBox:LbIndex $w emptyOK]
- if {$index == ""} {
- set index [$data(w:listbox) nearest $y]
- }
-
- if {$index >= 0} {
- if {"x[focus -lastfor $data(w:entry)]" != "x$data(w:entry)" &&
- "x[focus -lastfor $data(w:entry)]" != "x$data(w:listbox)"} {
- focus $data(w:entry)
- }
-
- set string [$data(w:listbox) get $index]
- tixComboBox:SetSelection $w $string
-
- tixComboBox:UpdateListboxSelection $w $index
- }
- }
-
- #----------------------------------------------------------------------
- # Internal commands
- #----------------------------------------------------------------------
- proc tixComboBox:CrossBtn {w} {
- upvar #0 $w data
-
- $data(w:entry) delete 0 end
- tixComboBox:ClearListboxSelection $w
- tixComboBox:SetSelection $w ""
- }
-
- #--------------------------------------------------
- # Popping up list shell
- #--------------------------------------------------
-
- # Popup the listbox and grab
- #
- #
- proc tixComboBox:Popup {w} {
- upvar #0 $w data
-
- if {![winfo ismapped $data(w:root)]} {
- return
- }
-
- #---------------------------------------------------------------------
- # Pop up
- #
- if {$data(-listcmd) != ""} {
- # This option allows the user to fill in the listbox on demand
- #
- tixEvalCmdBinding $w $data(-listcmd)
- }
-
- # calculate the size
- set y [winfo rooty $data(w:entry)]
- incr y [winfo height $data(w:entry)]
- incr y 3
-
- set bd [$data(w:shell) cget -bd]
- # incr bd [$data(w:shell) cget -highlightthickness]
- set height [expr [winfo reqheight $data(w:slistbox)] + 2*$bd]
-
- set x1 [winfo rootx $data(w:entry)]
- if {$data(-listwidth) == ""} {
- if [winfo ismapped $data(w:arrow)] {
- set x2 [winfo rootx $data(w:arrow)]
- if {$x2 >= $x1} {
- incr x2 [winfo width $data(w:arrow)]
- set width [expr "$x2 - $x1"]
- } else {
- set width [winfo width $data(w:entry)]
- set x2 [expr $x1 + $width]
- }
- } else {
- set width [winfo width $data(w:entry)]
- set x2 [expr $x1 + $width]
- }
- } else {
- set width $data(-listwidth)
- set x2 [expr $x1 + $width]
- }
-
- set reqwidth [winfo reqwidth $data(w:shell)]
- if {$reqwidth < $width} {
- set reqwidth $width
- } else {
- if {$reqwidth > [expr $width *3]} {
- set reqwidth [expr $width *3]
- }
- if {$reqwidth > [winfo vrootwidth .]} {
- set reqwidth [winfo vrootwidth .]
- }
- }
- set width $reqwidth
-
-
- # If the listbox is too far right, pull it back to the left
- #
- set scrwidth [winfo vrootwidth .]
- if {$x2 > $scrwidth} {
- set x1 [expr $scrwidth - $width]
- }
-
- # If the listbox is too far left, pull it back to the right
- #
- if {$x1 < 0} {
- set x1 0
- }
-
- # If the listbox is below bottom of screen, put it upwards
- #
- set scrheight [winfo vrootheight .]
- set bottom [expr $y+$height]
- if {$bottom > $scrheight} {
- set y [expr $y-$height-[winfo height $data(w:entry)]-5]
- }
-
- # OK , popup the shell
- #
- global tcl_platform
-
- wm geometry $data(w:shell) $reqwidth\x$height+$x1+$y
- if {$tcl_platform(platform) == "windows"} {
- update
- }
- wm deiconify $data(w:shell)
- if {$tcl_platform(platform) == "windows"} {
- update
- }
- raise $data(w:shell)
- focus $data(w:entry)
- set data(popped) 1
-
- tixComboBox:Grab $w
- }
-
- proc tixComboBox:SetCursor {w cursor} {
- upvar #0 $w data
-
- $w config -cursor $cursor
- }
-
- proc tixComboBox:Popdown {w} {
- upvar #0 $w data
-
- wm withdraw $data(w:shell)
- tixComboBox:SetCursor $w ""
- }
-
- # Grab the server so that user cannot move the windows around
- proc tixComboBox:Grab {w} {
- upvar #0 $w data
-
- tixComboBox:SetCursor $w arrow
- catch {
- # We catch here because grab may fail under a lot of circumstances
- # Just don't want to break the code ...
- case $data(-grab) {
- global {
- tixPushGrab -global $data(w:root)
- }
- local {
- tixPushGrab $data(w:root)
- }
- }
- }
- }
-
- proc tixComboBox:Ungrab {w} {
- upvar #0 $w data
-
- case $data(-grab) {
- global {
- tixPopGrab
- }
- local {
- tixPopGrab
- }
- }
- }
-
- #----------------------------------------------------------------------
- # Alignment
- #----------------------------------------------------------------------
- # The following two routines can emulate a "right align mode" for the
- # entry in the combo box.
-
- proc tixComboBox:EntryAlignEnd {w} {
- upvar #0 $w data
- $data(w:entry) xview end
- }
-
-
- proc tixComboBox:Destructor {w} {
- upvar #0 $w data
-
- tixUnsetMegaWidget $data(w:entry)
- tixVariable:DeleteVariable $w
-
- # Chain this to the superclass
- #
- tixChainMethod $w Destructor
- }
-
-
- #----------------------------------------------------------------------
- # CONFIG OPTIONS
- #----------------------------------------------------------------------
-
- proc tixComboBox:config-state {w value} {
- upvar #0 $w data
- catch {if {"x[$data(w:arrow) cget -state]" == "x$value"} {
- set a 1
- }}
- if [info exists a] {
- return
- }
-
- catch {$data(w:arrow) config -state $value}
- catch {$data(w:tick) config -state $value}
- catch {$data(w:cross) config -state $value}
- catch {$data(w:slistbox) config -state $value}
-
- if ![string compare $value normal] {
- set fg [$data(w:arrow) cget -fg]
- set entryFg $data(entryfg)
- } else {
- set fg [$data(w:arrow) cget -disabledforeground]
- set entryFg $data(-disabledforeground)
- }
- if [string compare $fg ""] {
- $data(w:label) config -fg $fg
- $data(w:listbox) config -fg $fg -selectforeground $fg
- }
- $data(w:entry) config -fg $entryFg -selectforeground $entryFg
-
- if ![string compare $value normal] {
- if {$data(-editable)} {
- $data(w:entry) config -state normal
- }
- $data(w:entry) config -takefocus 1
- } else {
- if {$data(-editable)} {
- $data(w:entry) config -state disabled
- }
- $data(w:entry) config -takefocus 0
- }
- }
-
- proc tixComboBox:config-value {w value} {
- upvar #0 $w data
-
- tixComboBox:SetValue $w $value
-
- set data(-selection) $value
-
- if {"x[tixComboBox:LbGetSelection $w]" != "x$value"} {
- tixComboBox:ClearListboxSelection $w
- }
- }
-
- proc tixComboBox:config-selection {w value} {
- upvar #0 $w data
-
- tixComboBox:SetSelection $w $value
-
- if {"x[tixComboBox:LbGetSelection $w]" != "x$value"} {
- tixComboBox:ClearListboxSelection $w
- }
- }
-
- proc tixComboBox:config-variable {w arg} {
- upvar #0 $w data
-
- if [tixVariable:ConfigVariable $w $arg] {
- # The value of data(-value) is changed if tixVariable:ConfigVariable
- # returns true
- set data(-selection) $data(-value)
- tixComboBox:SetValue $w $data(-value) 1
- }
- catch {
- unset data(varInited)
- }
- set data(-variable) $arg
- }
-
-
- #----------------------------------------------------------------------
- # WIDGET COMMANDS
- #----------------------------------------------------------------------
- proc tixComboBox:align {w args} {
- upvar #0 $w data
-
- if {$data(-anchor) == "e"} {
- tixComboBox:EntryAlignEnd $w
- }
- }
-
- proc tixComboBox:addhistory {w value} {
- upvar #0 $w data
-
- tixComboBox:insert $w 0 $value
- $data(w:listbox) selection clear 0 end
-
- if {$data(-prunehistory)} {
- # Prune from the end
- #
- set max [$data(w:listbox) size]
- if {$max <= 1} {
- return
- }
- for {set i [expr $max -1]} {$i >= 1} {incr i -1} {
- if {"x[$data(w:listbox) get $i]" == "x$value"} {
- $data(w:listbox) delete $i
- break
- }
- }
- }
- }
-
- proc tixComboBox:appendhistory {w value} {
- upvar #0 $w data
-
- tixComboBox:insert $w end $value
- $data(w:listbox) selection clear 0 end
-
- if {$data(-prunehistory)} {
- # Prune from the end
- #
- set max [$data(w:listbox) size]
- if {$max <= 1} {
- return
- }
- for {set i [expr $max -2]} {$i >= 0} {incr i -1} {
- if {"x[$data(w:listbox) get $i]" == "x$value"} {
- $data(w:listbox) delete $i
- break
- }
- }
- }
- }
-
- proc tixComboBox:insert {w index newitem} {
- upvar #0 $w data
-
- $data(w:listbox) insert $index $newitem
-
- if {$data(-history) && $data(-historylimit) != ""} {
- if {"x[$data(w:listbox) size]" == "x$data(-historylimit)"} {
- $data(w:listbox) delete 0
- }
- }
- }
-
- proc tixComboBox:pick {w index} {
- upvar #0 $w data
-
- $data(w:listbox) activate $index
- $data(w:listbox) selection clear 0 end
- $data(w:listbox) selection set active
- $data(w:listbox) see active
- set text [$data(w:listbox) get $index]
-
- tixComboBox:SetValue $w $text
-
- set data(curIndex) $index
- }
-
- proc tixComboBox:invoke {w} {
- tixComboBox:Invoke $w
- }
-
- proc tixComboBox:popdown {w} {
- upvar #0 $w data
-
- if {$data(-dropdown)} {
- tixComboBox:Popdown $w
- }
- }
-