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# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
#
# $Id: SListBox.tcl,v 1.5 2004/03/28 02:44:57 hobbs Exp $
#
# SListBox.tcl --
#
# This file implements Scrolled Listbox widgets
#
# 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.
#
# ToDo:
# -anchor (none)
#
tixWidgetClass tixScrolledListBox {
-classname TixScrolledListBox
-superclass tixScrolledWidget
-method {
}
-flag {
-anchor -browsecmd -command -state
}
-static {
-anchor
}
-configspec {
{-anchor anchor Anchor w}
{-browsecmd browseCmd BrowseCmd ""}
{-command command Command ""}
{-state state State normal}
{-takefocus takeFocus TakeFocus 1 tixVerifyBoolean}
}
-default {
{.scrollbar auto}
{*borderWidth 1}
{*listbox.highlightBackground #d9d9d9}
{*listbox.relief sunken}
{*listbox.background #c3c3c3}
{*listbox.takeFocus 1}
{*Scrollbar.takeFocus 0}
}
}
proc tixScrolledListBox:InitWidgetRec {w} {
upvar #0 $w data
tixChainMethod $w InitWidgetRec
set data(x-first) 0
set data(x-last) 1
set data(y-first) 0
set data(y-last) 1
}
proc tixScrolledListBox:ConstructWidget {w} {
upvar #0 $w data
tixChainMethod $w ConstructWidget
set data(w:listbox) \
[listbox $w.listbox]
set data(w:hsb) \
[scrollbar $w.hsb -orient horizontal]
set data(w:vsb) \
[scrollbar $w.vsb -orient vertical ]
set data(pw:client) $data(w:listbox)
}
proc tixScrolledListBox:SetBindings {w} {
upvar #0 $w data
tixChainMethod $w SetBindings
$data(w:listbox) config \
-xscrollcommand "tixScrolledListBox:XView $w"\
-yscrollcommand "tixScrolledListBox:YView $w"
$data(w:hsb) config -command "$data(w:listbox) xview"
$data(w:vsb) config -command "$data(w:listbox) yview"
bind $w <Configure> "+tixScrolledListBox:Configure $w"
bind $w <FocusIn> "focus $data(w:listbox)"
bindtags $data(w:listbox) \
"$data(w:listbox) TixListboxState Listbox TixListbox [winfo toplevel $data(w:listbox)] all"
tixSetMegaWidget $data(w:listbox) $w
}
proc tixScrolledListBoxBind {} {
tixBind TixListboxState <1> {
if {[set [tixGetMegaWidget %W](-state)] eq "disabled"} {
break
}
}
tixBind TixListbox <1> {
if {[string is true -strict [%W cget -takefocus]]} {
focus %W
}
tixScrolledListBox:Browse [tixGetMegaWidget %W]
}
tixBind TixListboxState <B1-Motion> {
if {[set [tixGetMegaWidget %W](-state)] eq "disabled"} {
break
}
}
tixBind TixListbox <B1-Motion> {
tixScrolledListBox:Browse [tixGetMegaWidget %W]
}
tixBind TixListboxState <Up> {
if {[set [tixGetMegaWidget %W](-state)] eq "disabled"} {
break
}
}
tixBind TixListbox <Up> {
tixScrolledListBox:KeyBrowse [tixGetMegaWidget %W]
}
tixBind TixListboxState <Down> {
if {[set [tixGetMegaWidget %W](-state)] eq "disabled"} {
break
}
}
tixBind TixListbox <Down> {
tixScrolledListBox:KeyBrowse [tixGetMegaWidget %W]
}
tixBind TixListboxState <Return> {
if {[set [tixGetMegaWidget %W](-state)] eq "disabled"} {
break
}
}
tixBind TixListbox <Return> {
tixScrolledListBox:KeyInvoke [tixGetMegaWidget %W]
}
tixBind TixListboxState <Double-1> {
if {[set [tixGetMegaWidget %W](-state)] eq "disabled"} {
break
}
}
tixBind TixListbox <Double-1> {
tixScrolledListBox:Invoke [tixGetMegaWidget %W]
}
tixBind TixListboxState <ButtonRelease-1> {
if {[set [tixGetMegaWidget %W](-state)] eq "disabled"} {
break
}
}
tixBind TixListbox <ButtonRelease-1> {
tixScrolledListBox:Browse [tixGetMegaWidget %W]
}
}
proc tixScrolledListBox:Browse {w} {
upvar #0 $w data
if {$data(-browsecmd) != ""} {
set bind(specs) {%V}
set bind(%V) [$data(w:listbox) get \
[$data(w:listbox) nearest [tixEvent flag y]]]
tixEvalCmdBinding $w $data(-browsecmd) bind
}
}
proc tixScrolledListBox:KeyBrowse {w} {
upvar #0 $w data
if {$data(-browsecmd) != ""} {
set bind(specs) {%V}
set bind(%V) [$data(w:listbox) get active]
tixEvalCmdBinding $w $data(-browsecmd) bind
}
}
# tixScrolledListBox:Invoke --
#
# The user has invoked the listbox by pressing either the <Returh>
# key or double-clicking. Call the user-supplied -command function.
#
# For both -browsecmd and -command, it is the responsibility of the
# user-supplied function to determine the current selection of the listbox
#
proc tixScrolledListBox:Invoke {w} {
upvar #0 $w data
if {$data(-command) != ""} {
set bind(specs) {%V}
set bind(%V) [$data(w:listbox) get \
[$data(w:listbox) nearest [tixEvent flag y]]]
tixEvalCmdBinding $w $data(-command) bind
}
}
proc tixScrolledListBox:KeyInvoke {w} {
upvar #0 $w data
if {$data(-command) != ""} {
set bind(specs) {%V}
set bind(%V) [$data(w:listbox) get active]
tixEvalCmdBinding $w $data(-command) bind
}
}
#----------------------------------------------------------------------
#
# option configs
#----------------------------------------------------------------------
proc tixScrolledListBox:config-takefocus {w value} {
upvar #0 $w data
$data(w:listbox) config -takefocus $value
}
#----------------------------------------------------------------------
#
# Widget commands
#----------------------------------------------------------------------
#----------------------------------------------------------------------
#
# Private Methods
#----------------------------------------------------------------------
proc tixScrolledListBox:XView {w first last} {
upvar #0 $w data
set data(x-first) $first
set data(x-last) $last
$data(w:hsb) set $first $last
tixWidgetDoWhenIdle tixScrolledWidget:Configure $w
}
proc tixScrolledListBox:YView {w first last} {
upvar #0 $w data
set data(y-first) $first
set data(y-last) $last
$data(w:vsb) set $first $last
tixWidgetDoWhenIdle tixScrolledWidget:Configure $w
# Somehow an update here must be used to advoid osscilation
#
update idletasks
}
#
#----------------------------------------------------------------------
# virtual functions to query the client window's scroll requirement
#----------------------------------------------------------------------
proc tixScrolledListBox:GeometryInfo {w mW mH} {
upvar #0 $w data
return [list \
[list $data(x-first) $data(x-last)]\
[list $data(y-first) $data(y-last)]]
}
proc tixScrolledListBox:Configure {w} {
upvar #0 $w data
tixWidgetDoWhenIdle tixScrolledListBox:TrickScrollbar $w
if {$data(-anchor) eq "e"} {
$data(w:listbox) xview 100000
}
}
# This procedure is necessary because listbox does not call x,y scroll command
# when its size is changed
#
proc tixScrolledListBox:TrickScrollbar {w} {
upvar #0 $w data
set inc [$data(w:listbox) select include 0]
$data(w:listbox) select set 0
if {!$inc} {
$data(w:listbox) select clear 0
}
}
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