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