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#
# Checkbox
# ----------------------------------------------------------------------
# Implements a checkbuttonbox. Supports adding, inserting, deleting,
# selecting, and deselecting of checkbuttons by tag and index.
#
# ----------------------------------------------------------------------
# AUTHOR: John A. Tucker EMAIL: jatucker@spd.dsccc.com
#
# ----------------------------------------------------------------------
# Copyright (c) 1997 DSC Technologies Corporation
# ======================================================================
# Permission to use, copy, modify, distribute and license this software
# and its documentation for any purpose, and without fee or written
# agreement with DSC, is hereby granted, provided that the above copyright
# notice appears in all copies and that both the copyright notice and
# warranty disclaimer below appear in supporting documentation, and that
# the names of DSC Technologies Corporation or DSC Communications
# Corporation not be used in advertising or publicity pertaining to the
# software without specific, written prior permission.
#
# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-
# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE
# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE,
# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL
# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,
# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
# SOFTWARE.
# ======================================================================
#
# Use option database to override default resources of base classes.
#
option add *Checkbox.labelMargin 10 widgetDefault
option add *Checkbox.labelFont \
"-Adobe-Helvetica-Bold-R-Normal--*-120-*-*-*-*-*-*" widgetDefault
option add *Checkbox.labelPos nw widgetDefault
option add *Checkbox.borderWidth 2 widgetDefault
option add *Checkbox.relief groove widgetDefault
#
# Usual options.
#
itk::usual Checkbox {
keep -background -borderwidth -cursor -foreground -labelfont
}
# ------------------------------------------------------------------
# CHECKBOX
# ------------------------------------------------------------------
itcl::class iwidgets::Checkbox {
inherit iwidgets::Labeledframe
constructor {args} {}
itk_option define -orient orient Orient vertical
public {
method add {tag args}
method insert {index tag args}
method delete {index}
method get {{index ""}}
method index {index}
method select {index}
method deselect {index}
method flash {index}
method toggle {index}
method buttonconfigure {index args}
}
private {
method gettag {index} ;# Get the tag of the checkbutton associated
;# with a numeric index
variable _unique 0 ;# Unique id for choice creation.
variable _buttons {} ;# List of checkbutton tags.
common buttonVar ;# Array of checkbutton "-variables"
}
}
#
# Provide a lowercased access method for the Checkbox class.
#
proc ::iwidgets::checkbox {pathName args} {
uplevel ::iwidgets::Checkbox $pathName $args
}
# ------------------------------------------------------------------
# CONSTRUCTOR
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::constructor {args} {
eval itk_initialize $args
}
# ------------------------------------------------------------------
# OPTIONS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# OPTION: -orient
#
# Allows the user to orient the checkbuttons either horizontally
# or vertically. Added by Chad Smith (csmith@adc.com) 3/10/00.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Checkbox::orient {
if {$itk_option(-orient) == "horizontal"} {
foreach tag $_buttons {
pack $itk_component($tag) -side left -anchor nw -padx 4 -expand 1
}
} elseif {$itk_option(-orient) == "vertical"} {
foreach tag $_buttons {
pack $itk_component($tag) -side top -anchor w -padx 4 -expand 0
}
} else {
error "Bad orientation: $itk_option(-orient). Should be\
\"horizontal\" or \"vertical\"."
}
}
# ------------------------------------------------------------------
# METHODS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# METHOD: index index
#
# Searches the checkbutton tags in the checkbox for the one with the
# requested tag, numerical index, or keyword "end". Returns the
# choices's numerical index if found, otherwise error.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::index {index} {
if {[llength $_buttons] > 0} {
if {[regexp {(^[0-9]+$)} $index]} {
if {$index < [llength $_buttons]} {
return $index
} else {
error "Checkbox index \"$index\" is out of range"
}
} elseif {$index == "end"} {
return [expr {[llength $_buttons] - 1}]
} else {
if {[set idx [lsearch $_buttons $index]] != -1} {
return $idx
}
error "bad Checkbox index \"$index\": must be number, end,\
or pattern"
}
} else {
error "Checkbox \"$itk_component(hull)\" has no checkbuttons"
}
}
# ------------------------------------------------------------------
# METHOD: add tag ?option value option value ...?
#
# Add a new tagged checkbutton to the checkbox at the end. The method
# takes additional options which are passed on to the checkbutton
# constructor. These include most of the typical checkbutton
# options. The tag is returned.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::add {tag args} {
itk_component add $tag {
eval checkbutton $itk_component(childsite).cb[incr _unique] \
-variable [list [itcl::scope buttonVar($this,$tag)]] \
-anchor w \
-justify left \
-highlightthickness 0 \
$args
} {
usual
keep -command -disabledforeground -selectcolor -state
ignore -highlightthickness -highlightcolor
rename -font -labelfont labelFont Font
}
# Redraw the buttons with the proper orientation.
if {$itk_option(-orient) == "vertical"} {
pack $itk_component($tag) -side top -anchor w -padx 4 -expand 0
} else {
pack $itk_component($tag) -side left -anchor nw -expand 1
}
lappend _buttons $tag
return $tag
}
# ------------------------------------------------------------------
# METHOD: insert index tag ?option value option value ...?
#
# Insert the tagged checkbutton in the checkbox just before the
# one given by index. Any additional options are passed on to the
# checkbutton constructor. These include the typical checkbutton
# options. The tag is returned.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::insert {index tag args} {
itk_component add $tag {
eval checkbutton $itk_component(childsite).cb[incr _unique] \
-variable [list [itcl::scope buttonVar($this,$tag)]] \
-anchor w \
-justify left \
-highlightthickness 0 \
$args
} {
usual
ignore -highlightthickness -highlightcolor
rename -font -labelfont labelFont Font
}
set index [index $index]
set before [lindex $_buttons $index]
set _buttons [linsert $_buttons $index $tag]
pack $itk_component($tag) -anchor w -padx 4 -before $itk_component($before)
return $tag
}
# ------------------------------------------------------------------
# METHOD: delete index
#
# Delete the specified checkbutton.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::delete {index} {
set tag [gettag $index]
set index [index $index]
destroy $itk_component($tag)
set _buttons [lreplace $_buttons $index $index]
if { [info exists buttonVar($this,$tag)] == 1 } {
unset buttonVar($this,$tag)
}
}
# ------------------------------------------------------------------
# METHOD: select index
#
# Select the specified checkbutton.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::select {index} {
set tag [gettag $index]
#-----------------------------------------------------------
# BUG FIX: csmith (Chad Smith: csmith@adc.com), 3/30/99
#-----------------------------------------------------------
# This method should only invoke the checkbutton if it's not
# already selected. Check its associated variable, and if
# it's set, then just ignore and return.
#-----------------------------------------------------------
if {[set [itcl::scope buttonVar($this,$tag)]] ==
[[component $tag] cget -onvalue]} {
return
}
$itk_component($tag) invoke
}
# ------------------------------------------------------------------
# METHOD: toggle index
#
# Toggle a specified checkbutton between selected and unselected
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::toggle {index} {
set tag [gettag $index]
$itk_component($tag) toggle
}
# ------------------------------------------------------------------
# METHOD: get
#
# Return the value of the checkbutton with the given index, or a
# list of all checkbutton values in increasing order by index.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::get {{index ""}} {
set result {}
if {$index == ""} {
foreach tag $_buttons {
if {$buttonVar($this,$tag)} {
lappend result $tag
}
}
} else {
set tag [gettag $index]
set result $buttonVar($this,$tag)
}
return $result
}
# ------------------------------------------------------------------
# METHOD: deselect index
#
# Deselect the specified checkbutton.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::deselect {index} {
set tag [gettag $index]
$itk_component($tag) deselect
}
# ------------------------------------------------------------------
# METHOD: flash index
#
# Flash the specified checkbutton.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::flash {index} {
set tag [gettag $index]
$itk_component($tag) flash
}
# ------------------------------------------------------------------
# METHOD: buttonconfigure index ?option? ?value option value ...?
#
# Configure a specified checkbutton. This method allows configuration
# of checkbuttons from the Checkbox level. The options may have any
# of the values accepted by the add method.
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::buttonconfigure {index args} {
set tag [gettag $index]
eval $itk_component($tag) configure $args
}
# ------------------------------------------------------------------
# METHOD: gettag index
#
# Return the tag of the checkbutton associated with a specified
# numeric index
# ------------------------------------------------------------------
itcl::body iwidgets::Checkbox::gettag {index} {
return [lindex $_buttons [index $index]]
}
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