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# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
#
# $Id: HList.tcl,v 1.6 2004/03/28 02:44:57 hobbs Exp $
#
# HList.tcl --
#
# This file defines the default bindings for Tix Hierarchical Listbox
# widgets.
#
# Copyright (c) 1993-1999 Ioi Kim Lam.
# Copyright (c) 2000-2001 Tix Project Group.
# Copyright (c) 2004 ActiveState
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
global tkPriv
if {![llength [info globals tkPriv]]} {
tk::unsupported::ExposePrivateVariable tkPriv
}
#--------------------------------------------------------------------------
# tkPriv elements used in this file:
#
# afterId - Token returned by "after" for autoscanning.
# fakeRelease - Cancel the ButtonRelease-1 after the user double click
#--------------------------------------------------------------------------
#
foreach fun {tkCancelRepeat} {
if {![llength [info commands $fun]]} {
tk::unsupported::ExposePrivateCommand $fun
}
}
unset fun
proc tixHListBind {} {
tixBind TixHList <ButtonPress-1> {
tixHList:Button-1 %W %x %y ""
}
tixBind TixHList <Shift-ButtonPress-1> {
tixHList:Button-1 %W %x %y s
}
tixBind TixHList <Control-ButtonPress-1> {
tixHList:Button-1 %W %x %y c
}
tixBind TixHList <ButtonRelease-1> {
tixHList:ButtonRelease-1 %W %x %y
}
tixBind TixHList <Double-ButtonPress-1> {
tixHList:Double-1 %W %x %y
}
tixBind TixHList <B1-Motion> {
set tkPriv(x) %x
set tkPriv(y) %y
set tkPriv(X) %X
set tkPriv(Y) %Y
tixHList:B1-Motion %W %x %y
}
tixBind TixHList <B1-Leave> {
set tkPriv(x) %x
set tkPriv(y) %y
set tkPriv(X) %X
set tkPriv(Y) %Y
tixHList:B1-Leave %W
}
tixBind TixHList <B1-Enter> {
tixHList:B1-Enter %W %x %y
}
# Keyboard bindings
#
tixBind TixHList <Up> {
tixHList:UpDown %W prev ""
}
tixBind TixHList <Down> {
tixHList:UpDown %W next ""
}
tixBind TixHList <Shift-Up> {
tixHList:UpDown %W prev s
}
tixBind TixHList <Shift-Down> {
tixHList:UpDown %W next s
}
tixBind TixHList <Left> {
tixHList:LeftRight %W left
}
tixBind TixHList <Right> {
tixHList:LeftRight %W right
}
tixBind TixHList <Prior> {
%W yview scroll -1 pages
}
tixBind TixHList <Next> {
%W yview scroll 1 pages
}
tixBind TixHList <Return> {
tixHList:Keyboard-Activate %W
}
tixBind TixHList <space> {
tixHList:Keyboard-Browse %W
}
# Under Windows <Home> moves up, clears the sel and sets the selection
# Under Windows <Control-Home> moves up, leaves the selection, and sets the anchor
tixBind TixHList <Home> {
set w %W
$w yview moveto 0; # $w xview moveto 0
set sel [lindex [$w info children] 0]
# should be first not disabled
$w anchor set $sel
tixHList:Keyboard-Browse $w
}
tixBind TixHList <End> {
set w %W
$w yview moveto 1; # $w xview moveto 0
$w select clear
# should be last not disabled
set sel [lindex [$w info children .] end]
while {[set next [$w info next $sel]] ne "" && \
![$w info hidden $next] && \
[llength [set kids [$w info child $sel]]]} {
set sel [lindex $kids end]
}
$w anchor set $sel
tixHList:Keyboard-Browse $w
}
tixBind TixHList <Control-Home> {
set w %W
$w yview moveto 0; # $w xview moveto 0
set sel [lindex [$w info children] 0]
# should be first not disabled
$w anchor set $sel
}
tixBind TixHList <Control-End> {
set w %W
$w yview moveto 1; # $w xview moveto 0
# should be last not disabled
set sel [lindex [$w info children .] end]
while {[set next [$w info next $sel]] ne "" && \
![$w info hidden $next] && \
[llength [set kids [$w info child $sel]]]} {
set sel [lindex $kids end]
}
$w anchor set $sel
}
#
# Don't use tixBind because %A causes Tk 8.3.2 to crash
#
bind TixHList <MouseWheel> {
%W yview scroll [expr {- (%D / 120) * 2}] units
}
}
#----------------------------------------------------------------------
#
#
# Key bindings
#
#
#----------------------------------------------------------------------
proc tixHList:Keyboard-Activate {w} {
if {[tixHList:GetState $w] != 0} {
return
}
set ent [$w info anchor]
if {$ent eq ""} {
return
}
if {[$w cget -selectmode] eq "single"} {
$w select clear
}
$w select set $ent
set command [$w cget -command]
if {$command ne ""} {
set bind(specs) {%V}
set bind(%V) $ent
tixEvalCmdBinding $w $command bind $ent
}
}
proc tixHList:Keyboard-Browse {w} {
if {[tixHList:GetState $w] != 0} {
return
}
set ent [$w info anchor]
if {$ent eq ""} {
return
}
if {[$w cget -selectmode] eq "single"} {
$w select clear
}
$w select set $ent
tixHList:Browse $w $ent
}
proc tixHList:LeftRight {w spec} {
catch {
uplevel #0 unset $w:priv:shiftanchor
}
if {[tixHList:GetState $w] != 0} {
return
}
set anchor [$w info anchor]
if {$anchor eq ""} {
set anchor [lindex [$w info children] 0]
}
if {$anchor eq ""} {
return
}
set ent $anchor
while {1} {
set e $ent
if {$spec eq "left"} {
set ent [$w info parent $e]
if {$ent eq "" || [$w entrycget $ent -state] eq "disabled"} {
set ent [$w info prev $e]
}
} else {
set ent [lindex [$w info children $e] 0]
if {$ent eq "" || [$w entrycget $ent -state] eq "disabled"} {
set ent [$w info next $e]
}
}
if {$ent eq ""} {
break
}
if {[$w entrycget $ent -state] eq "disabled"} {
continue
}
if {[$w info hidden $ent]} {
continue
}
break
}
if {$ent eq ""} {
return
}
$w anchor set $ent
$w see $ent
if {[$w cget -selectmode] ne "single"} {
$w select clear
$w selection set $ent
tixHList:Browse $w $ent
}
}
proc tixHList:UpDown {w spec mod} {
if {[tixHList:GetState $w] ne 0} {
return
}
set anchor [$w info anchor]
set done 0
if {$anchor eq ""} {
set anchor [lindex [$w info children] 0]
if {$anchor eq ""} {
return
}
if {[$w entrycget $anchor -state] ne "disabled"} {
# That's a good anchor
set done 1
} else {
# We search for the first non-disabled entry (downward)
set spec next
}
}
set ent $anchor
# mike - bulletproofing
if {![$w info exists $ent]} {return}
# Find the prev/next non-disabled entry
#
while {!$done} {
set ent [$w info $spec $ent]
if {$ent eq ""} {
break
}
if {[$w entrycget $ent -state] eq "disabled"} {
continue
}
if {[$w info hidden $ent]} {
continue
}
break
}
if {$ent eq ""} {
return
} else {
$w see $ent
$w anchor set $ent
set selMode [$w cget -selectmode]
if {$mod eq "s" && ($selMode eq "extended" || $selMode eq "multiple")} {
global $w:priv:shiftanchor
if {![info exists $w:priv:shiftanchor]} {
set $w:priv:shiftanchor $anchor
}
$w selection clear
# mike - bulletproofing
if {![catch {$w selection set $ent [set $w:priv:shiftanchor]}]} {
tixHList:Browse $w $ent
}
} else {
catch {
uplevel #0 unset $w:priv:shiftanchor
}
if {[$w cget -selectmode] ne "single"} {
$w select clear
$w selection set $ent
tixHList:Browse $w $ent
}
}
}
}
#----------------------------------------------------------------------
#
#
# Mouse bindings
#
#
#----------------------------------------------------------------------
proc tixHList:Button-1 {w x y mod} {
# if {[$w cget -state] eq "disabled"} {
# return
# }
if {[$w cget -takefocus]} {
focus $w
}
set selMode [$w cget -selectmode]
case [tixHList:GetState $w] {
{0} {
if {$mod eq "s" && $selMode eq "multiple"} {
tixHList:GoState 28 $w $x $y
return
}
if {$mod eq "s" && $selMode eq "extended"} {
tixHList:GoState 28 $w $x $y
return
}
if {$mod eq "c" && $selMode eq "extended"} {
tixHList:GoState 33 $w $x $y
return
}
tixHList:GoState 1 $w $x $y
}
}
}
proc tixHList:ButtonRelease-1 {w x y} {
case [tixHList:GetState $w] {
{5 16} {
tixHList:GoState 6 $w $x $y
}
{15} {
tixHList:GoState 17 $w $x $y
}
{10 11} {
tixHList:GoState 18 $w
}
{13 20} {
tixHList:GoState 14 $w $x $y
}
{21} {
tixHList:GoState 22 $w
}
{24} {
tixHList:GoState 25 $w
}
{26 28 33} {
tixHList:GoState 27 $w
}
{30} {
tixHList:GoState 32 $w
}
}
}
proc tixHList:Double-1 {w x y} {
case [tixHList:GetState $w] {
{0} {
tixHList:GoState 23 $w $x $y
}
}
}
proc tixHList:B1-Motion {w x y} {
case [tixHList:GetState $w] {
{1} {
tixHList:GoState 5 $w $x $y
}
{5 16} {
tixHList:GoState 5 $w $x $y
}
{13 20 21} {
tixHList:GoState 20 $w $x $y
}
{24 26 28} {
tixHList:GoState 26 $w $x $y
}
}
}
proc tixHList:B1-Leave {w} {
case [tixHList:GetState $w] {
{5} {
tixHList:GoState 10 $w
}
{26} {
tixHList:GoState 29 $w
}
}
}
proc tixHList:B1-Enter {w x y} {
case [tixHList:GetState $w] {
{10 11} {
tixHList:GoState 12 $w $x $y
}
{29 30} {
tixHList:GoState 31 $w $x $y
}
}
}
proc tixHList:AutoScan {w} {
case [tixHList:GetState $w] {
{29 30} {
tixHList:GoState 30 $w
}
}
}
#----------------------------------------------------------------------
#
# STATE MANIPULATION
#
#
#----------------------------------------------------------------------
proc tixHList:GetState {w} {
global $w:priv:state
if {![info exists $w:priv:state]} {
set $w:priv:state 0
}
return [set $w:priv:state]
}
proc tixHList:SetState {w n} {
global $w:priv:state
set $w:priv:state $n
}
proc tixHList:GoState {n w args} {
# puts "going from [tixHList:GetState $w] --> $n"
tixHList:SetState $w $n
eval tixHList:GoState-$n $w $args
}
#----------------------------------------------------------------------
# States
#----------------------------------------------------------------------
proc tixHList:GoState-0 {w} {
}
proc tixHList:GoState-1 {w x y} {
set oldEnt [$w info anchor]
set ent [tixHList:SetAnchor $w $x $y 1]
if {$ent eq ""} {
tixHList:GoState 0 $w
return
}
set info [$w info item $x $y]
if {[lindex $info 1] eq "indicator"} {
tixHList:GoState 13 $w $ent $oldEnt
} else {
if {[$w entrycget $ent -state] eq "disabled"} {
tixHList:GoState 0 $w
} else {
case [$w cget -selectmode] {
{single browse} {
tixHList:GoState 16 $w $ent
}
default {
tixHList:GoState 24 $w $ent
}
}
}
}
}
proc tixHList:GoState-5 {w x y} {
set oldEnt [$w info anchor]
set ent [tixHList:SetAnchor $w $x $y]
if {$ent eq "" || $oldEnt eq $ent} {
return
}
if {[$w cget -selectmode] ne "single"} {
tixHList:Select $w $ent
tixHList:Browse $w $ent
}
}
proc tixHList:GoState-6 {w x y} {
set ent [tixHList:SetAnchor $w $x $y]
if {$ent eq ""} {
tixHList:GoState 0 $w
return
}
tixHList:Select $w $ent
tixHList:Browse $w $ent
tixHList:GoState 0 $w
}
proc tixHList:GoState-10 {w} {
tixHList:StartScan $w
}
proc tixHList:GoState-11 {w} {
global tkPriv
tixHList:DoScan $w
set oldEnt [$w info anchor]
set ent [tixHList:SetAnchor $w $tkPriv(x) $tkPriv(y)]
if {$ent eq "" || $oldEnt eq $ent} {
return
}
if {[$w cget -selectmode] ne "single"} {
tixHList:Select $w $ent
tixHList:Browse $w $ent
}
}
proc tixHList:GoState-12 {w x y} {
tkCancelRepeat
tixHList:GoState 5 $w $x $y
}
proc tixHList:GoState-13 {w ent oldEnt} {
global tkPriv
set tkPriv(tix,indicator) $ent
set tkPriv(tix,oldEnt) $oldEnt
tixHList:CallIndicatorCmd $w <Arm> $ent
}
proc tixHList:GoState-14 {w x y} {
global tkPriv
if {[tixHList:InsideArmedIndicator $w $x $y]} {
$w anchor set $tkPriv(tix,indicator)
$w select clear
$w select set $tkPriv(tix,indicator)
tixHList:CallIndicatorCmd $w <Activate> $tkPriv(tix,indicator)
} else {
tixHList:CallIndicatorCmd $w <Disarm> $tkPriv(tix,indicator)
}
unset tkPriv(tix,indicator)
tixHList:GoState 0 $w
}
proc tixHList:GoState-16 {w ent} {
if {$ent ne "" && [$w cget -selectmode] ne "single"} {
tixHList:Select $w $ent
tixHList:Browse $w $ent
}
}
proc tixHList:GoState-18 {w} {
global tkPriv
tkCancelRepeat
tixHList:GoState 6 $w $tkPriv(x) $tkPriv(y)
}
proc tixHList:GoState-20 {w x y} {
global tkPriv
if {![tixHList:InsideArmedIndicator $w $x $y]} {
tixHList:GoState 21 $w $x $y
} else {
tixHList:CallIndicatorCmd $w <Arm> $tkPriv(tix,indicator)
}
}
proc tixHList:GoState-21 {w x y} {
global tkPriv
if {[tixHList:InsideArmedIndicator $w $x $y]} {
tixHList:GoState 20 $w $x $y
} else {
tixHList:CallIndicatorCmd $w <Disarm> $tkPriv(tix,indicator)
}
}
proc tixHList:GoState-22 {w} {
global tkPriv
if {$tkPriv(tix,oldEnt) ne ""} {
$w anchor set $tkPriv(tix,oldEnt)
} else {
$w anchor clear
}
tixHList:GoState 0 $w
}
proc tixHList:GoState-23 {w x y} {
set ent [tixHList:GetNearest $w $y]
if {$ent ne ""} {
set info [$w info item $x $y]
if {[lindex $info 1] eq "indicator"} {
tixHList:CallIndicatorCmd $w <Activate> $ent
} else {
$w select set $ent
set command [$w cget -command]
if {$command ne ""} {
set bind(specs) {%V}
set bind(%V) $ent
tixEvalCmdBinding $w $command bind $ent
}
}
}
tixHList:GoState 0 $w
}
proc tixHList:GoState-24 {w ent} {
if {$ent ne ""} {
tixHList:Select $w $ent
tixHList:Browse $w $ent
}
}
proc tixHList:GoState-25 {w} {
set ent [$w info anchor]
if {$ent ne ""} {
tixHList:Select $w $ent
tixHList:Browse $w $ent
}
tixHList:GoState 0 $w
}
proc tixHList:GoState-26 {w x y} {
set anchor [$w info anchor]
if {$anchor eq ""} {
set first [lindex [$w info children ""] 0]
if {$first ne ""} {
$w anchor set $first
set anchor $first
} else {
return
}
}
set ent [tixHList:GetNearest $w $y 1]
if {$ent ne ""} {
$w selection clear
$w selection set $anchor $ent
tixHList:Browse $w $ent
}
}
proc tixHList:GoState-27 {w} {
set ent [$w info anchor]
if {$ent ne ""} {
tixHList:Browse $w $ent
}
tixHList:GoState 0 $w
}
proc tixHList:GoState-28 {w x y} {
set anchor [$w info anchor]
if {$anchor eq ""} {
set first [lindex [$w info children ""] 0]
if {$first ne ""} {
$w anchor set $first
set anchor $first
} else {
return
}
}
set ent [tixHList:GetNearest $w $y 1]
if {$ent ne ""} {
$w selection clear
$w selection set $anchor $ent
tixHList:Browse $w $ent
}
}
proc tixHList:GoState-29 {w} {
tixHList:StartScan $w
}
proc tixHList:GoState-30 {w} {
global tkPriv
tixHList:DoScan $w
set anchor [$w info anchor]
if {$anchor eq ""} {
set first [lindex [$w info children ""] 0]
if {$first ne ""} {
$w anchor set $first
set anchor $first
} else {
return
}
}
set ent [tixHList:GetNearest $w $tkPriv(y) 1]
if {$ent ne ""} {
$w selection clear
$w selection set $anchor $ent
tixHList:Browse $w $ent
}
}
proc tixHList:GoState-31 {w x y} {
tkCancelRepeat
tixHList:GoState 26 $w $x $y
}
proc tixHList:GoState-32 {w} {
tkCancelRepeat
tixHList:GoState 0 $w
}
proc tixHList:GoState-33 {w x y} {
set ent [tixHList:GetNearest $w $y]
if {$ent ne ""} {
$w anchor set $ent
if {[lsearch [$w selection get] $ent] > -1} {
# This was missing - mike
$w selection clear $ent
} else {
$w selection set $ent
}
tixHList:Browse $w $ent
}
}
#----------------------------------------------------------------------
#
# Common actions
#
#----------------------------------------------------------------------
proc tixHList:GetNearest {w y {disableOK 0}} {
set ent [$w nearest $y]
if {$ent ne ""} {
if {!$disableOK && [$w entrycget $ent -state] eq "disabled"} {
return ""
}
}
return $ent
}
proc tixHList:SetAnchor {w x y {disableOK 0}} {
set ent [tixHList:GetNearest $w $y $disableOK]
if {$ent ne ""} {
if {[$w entrycget $ent -state] ne "disabled"} {
$w anchor set $ent
# mike This is non-standard and has a wierd effect: too much motion
# $w see $ent
return $ent
} elseif $disableOK {
return $ent
}
}
return ""
}
proc tixHList:Select {w ent} {
if {[$w info selection] ne $ent} {
$w selection clear
$w select set $ent
}
}
#----------------------------------------------------------------------
#
# Auto scan
#
#----------------------------------------------------------------------
proc tixHList:StartScan {w} {
global tkPriv
set tkPriv(afterId) [after 50 tixHList:AutoScan $w]
}
proc tixHList:DoScan {w} {
global tkPriv
set x $tkPriv(x)
set y $tkPriv(y)
set X $tkPriv(X)
set Y $tkPriv(Y)
if {$y >= [winfo height $w]} {
$w yview scroll 1 units
} elseif {$y < 0} {
$w yview scroll -1 units
} elseif {$x >= [winfo width $w]} {
$w xview scroll 2 units
} elseif {$x < 0} {
$w xview scroll -2 units
} else {
return
}
set tkPriv(afterId) [after 50 tixHList:AutoScan $w]
}
#----------------------------------------------------------------------
#
# Indicator handling
#
#----------------------------------------------------------------------
proc tixHList:CallIndicatorCmd {w event ent} {
set cmd [$w cget -indicatorcmd]
if {$cmd ne ""} {
set bind(type) $event
set bind(specs) {%V}
set bind(%V) $ent
tixEvalCmdBinding $w $cmd bind $ent
}
}
proc tixHList:InsideArmedIndicator {w x y} {
global tkPriv
set ent [tixHList:GetNearest $w $y 1]
if {$ent eq "" || $ent ne $tkPriv(tix,indicator)} {
return 0
}
set info [$w info item $x $y]
if {[lindex $info 1] eq "indicator"} {
return 1
} else {
return 0
}
}
proc tixHList:Browse {w ent} {
set browsecmd [$w cget -browsecmd]
if {$browsecmd ne ""} {
set bind(specs) {%V}
set bind(%V) $ent
tixEvalCmdBinding $w $browsecmd bind $ent
}
}
........