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- # SListBox.tcl --
- #
- # This file implements Scrolled Listbox widgets
- #
- # 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.
- #
-
-
- # 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.background #d9d9d9}
- {*Scrollbar.troughColor #c3c3c3}
- {*Scrollbar.takeFocus 0}
- {*Scrollbar.relief sunken}
- {*Scrollbar.width 15}
- }
- }
-
- 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)] == "disabled"} {
- break
- }
- }
- tixBind TixListbox <1> {
- if [tixGetBoolean -nocomplain [%W cget -takefocus]] {
- focus %W
- }
- tixScrolledListBox:Browse [tixGetMegaWidget %W]
- }
-
- tixBind TixListboxState <B1-Motion> {
- if {[set [tixGetMegaWidget %W](-state)] == "disabled"} {
- break
- }
- }
- tixBind TixListbox <B1-Motion> {
- tixScrolledListBox:Browse [tixGetMegaWidget %W]
- }
-
- tixBind TixListboxState <Up> {
- if {[set [tixGetMegaWidget %W](-state)] == "disabled"} {
- break
- }
- }
- tixBind TixListbox <Up> {
- tixScrolledListBox:KeyBrowse [tixGetMegaWidget %W]
- }
-
- tixBind TixListboxState <Down> {
- if {[set [tixGetMegaWidget %W](-state)] == "disabled"} {
- break
- }
- }
- tixBind TixListbox <Down> {
- tixScrolledListBox:KeyBrowse [tixGetMegaWidget %W]
- }
-
- tixBind TixListboxState <Return> {
- if {[set [tixGetMegaWidget %W](-state)] == "disabled"} {
- break
- }
- }
- tixBind TixListbox <Return> {
- tixScrolledListBox:KeyInvoke [tixGetMegaWidget %W]
- }
-
-
- tixBind TixListboxState <Double-1> {
- if {[set [tixGetMegaWidget %W](-state)] == "disabled"} {
- break
- }
- }
- tixBind TixListbox <Double-1> {
- tixScrolledListBox:Invoke [tixGetMegaWidget %W]
- }
-
- tixBind TixListboxState <ButtonRelease-1> {
- if {[set [tixGetMegaWidget %W](-state)] == "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) == "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 $w data
-
- if [$data(w:listbox) select include 0] {
- set inc 1
- } else {
- set inc 0
- }
-
- $data(w:listbox) select set 0
- if {!$inc} {
- $data(w:listbox) select clear 0
- }
- }
-