#==============================================================================
# Contains the implementation of the tablelist widget.
#
# Structure of the module:
#   - Namespace initialization
#   - Private procedure creating the default bindings
#   - Public procedure creating a new tablelist widget
#   - Private procedures implementing the tablelist widget command
#   - Private callback procedures
#
# Copyright (c) 2000-2009  Csaba Nemethi (E-mail: csaba.nemethi@t-online.de)
#==============================================================================

#
# Namespace initialization
# ========================
#

namespace eval tablelist {
    #
    # Get the current windowing system ("x11", "win32", "classic", or "aqua")
    #
    variable winSys
    if {[catch {tk windowingsystem} winSys] != 0} {
	switch $::tcl_platform(platform) {
	    unix	{ set winSys x11 }
	    windows	{ set winSys win32 }
	    macintosh	{ set winSys classic }
	}
    }

    #
    # Create aliases for a few tile commands if not yet present
    #
    proc createTileAliases {} {
	if {[string compare [interp alias {} ::tablelist::style] ""] != 0} {
	    return ""
	}

	if {[string compare [info commands ::ttk::style] ""] == 0} {
	    interp alias {} ::tablelist::style      {} ::style
	    if {[string compare $::tile::version "0.7"] >= 0} {
		interp alias {} ::tablelist::styleConfig {} ::style configure
	    } else {
		interp alias {} ::tablelist::styleConfig {} ::style default
	    }
	    interp alias {} ::tablelist::getThemes  {} ::tile::availableThemes
	    interp alias {} ::tablelist::setTheme   {} ::tile::setTheme

	    interp alias {} ::tablelist::tileqt_currentThemeName \
			 {} ::tile::theme::tileqt::currentThemeName
	    interp alias {} ::tablelist::tileqt_currentThemeColour \
			 {} ::tile::theme::tileqt::currentThemeColour
	} else {
	    interp alias {} ::tablelist::style	      {} ::ttk::style
	    interp alias {} ::tablelist::styleConfig  {} ::ttk::style configure
	    interp alias {} ::tablelist::getThemes    {} ::ttk::themes
	    interp alias {} ::tablelist::setTheme     {} ::ttk::setTheme

	    interp alias {} ::tablelist::tileqt_currentThemeName \
			 {} ::ttk::theme::tileqt::currentThemeName
	    interp alias {} ::tablelist::tileqt_currentThemeColour \
			 {} ::ttk::theme::tileqt::currentThemeColour
	}
    }
    if {$usingTile} {
	createTileAliases 
    }

    #
    # The array configSpecs is used to handle configuration options.  The
    # names of its elements are the configuration options for the Tablelist
    # class.  The value of an array element is either an alias name or a list
    # containing the database name and class as well as an indicator specifying
    # the widget(s) to which the option applies: c stands for all children
    # (text widgets and labels), b for the body text widget, l for the labels,
    # f for the frame, and w for the widget itself.
    #
    #	Command-Line Name	 {Database Name		  Database Class      W}
    #	------------------------------------------------------------------------
    #
    variable configSpecs
    array set configSpecs {
	-activestyle		 {activeStyle		  ActiveStyle	      w}
	-arrowcolor		 {arrowColor		  ArrowColor	      w}
	-arrowstyle		 {arrowStyle		  ArrowStyle	      w}
	-arrowdisabledcolor	 {arrowDisabledColor	  ArrowDisabledColor  w}
	-background		 {background		  Background	      b}
	-bg			 -background
	-borderwidth		 {borderWidth		  BorderWidth	      f}
	-bd			 -borderwidth
	-columns		 {columns		  Columns	      w}
	-columntitles		 {columnTitles		  ColumnTitles	      w}
	-cursor			 {cursor		  Cursor	      c}
	-disabledforeground	 {disabledForeground	  DisabledForeground  w}
	-editendcommand		 {editEndCommand	  EditEndCommand      w}
	-editstartcommand	 {editStartCommand	  EditStartCommand    w}
	-exportselection	 {exportSelection	  ExportSelection     w}
	-font			 {font			  Font		      b}
	-forceeditendcommand	 {forceEditEndCommand	  ForceEditEndCommand w}
	-foreground		 {foreground		  Foreground	      b}
	-fg			 -foreground
	-height			 {height		  Height	      w}
	-highlightbackground	 {highlightBackground	  HighlightBackground f}
	-highlightcolor		 {highlightColor	  HighlightColor      f}
	-highlightthickness	 {highlightThickness	  HighlightThickness  f}
	-incrarrowtype		 {incrArrowType		  IncrArrowType	      w}
	-labelactivebackground	 {labelActiveBackground	  Foreground          l}
	-labelactiveforeground	 {labelActiveForeground	  Background          l}
	-labelbackground	 {labelBackground	  Background	      l}
	-labelbg		 -labelbackground
	-labelborderwidth	 {labelBorderWidth	  BorderWidth	      l}
	-labelbd		 -labelborderwidth
	-labelcommand		 {labelCommand		  LabelCommand	      w}
	-labelcommand2		 {labelCommand2		  LabelCommand2	      w}
	-labeldisabledforeground {labelDisabledForeground DisabledForeground  l}
	-labelfont		 {labelFont		  Font		      l}
	-labelforeground	 {labelForeground	  Foreground	      l}
	-labelfg		 -labelforeground
	-labelheight		 {labelHeight		  Height	      l}
	-labelpady		 {labelPadY		  Pad		      l}
	-labelrelief		 {labelRelief		  Relief	      l}
	-listvariable		 {listVariable		  Variable	      w}
	-movablecolumns	 	 {movableColumns	  MovableColumns      w}
	-movablerows		 {movableRows		  MovableRows	      w}
	-movecolumncursor	 {moveColumnCursor	  MoveColumnCursor    w}
	-movecursor		 {moveCursor		  MoveCursor	      w}
	-protecttitlecolumns	 {protectTitleColumns	  ProtectTitleColumns w}
	-relief			 {relief		  Relief	      f}
	-resizablecolumns	 {resizableColumns	  ResizableColumns    w}
	-resizecursor		 {resizeCursor		  ResizeCursor	      w}
	-selectbackground	 {selectBackground	  Foreground	      w}
	-selectborderwidth	 {selectBorderWidth	  BorderWidth	      w}
	-selectforeground	 {selectForeground	  Background	      w}
	-selectmode		 {selectMode		  SelectMode	      w}
	-selecttype		 {selectType		  SelectType	      w}
	-setfocus		 {setFocus		  SetFocus	      w}
	-setgrid		 {setGrid		  SetGrid	      w}
	-showarrow		 {showArrow		  ShowArrow	      w}
	-showlabels		 {showLabels		  ShowLabels	      w}
	-showseparators		 {showSeparators	  ShowSeparators      w}
	-snipstring		 {snipString		  SnipString	      w}
	-sortcommand		 {sortCommand		  SortCommand	      w}
	-spacing		 {spacing		  Spacing	      w}
	-state			 {state			  State		      w}
	-stretch		 {stretch		  Stretch	      w}
	-stripebackground	 {stripeBackground	  Background	      w}
	-stripebg		 -stripebackground
	-stripeforeground	 {stripeForeground	  Foreground	      w}
	-stripefg		 -stripeforeground
	-stripeheight		 {stripeHeight		  StripeHeight	      w}
	-takefocus		 {takeFocus		  TakeFocus	      f}
	-targetcolor		 {targetColor		  TargetColor	      w}
	-titlecolumns		 {titleColumns	  	  TitleColumns	      w}
	-tooltipaddcommand	 {tooltipAddCommand	  TooltipAddCommand   w}
	-tooltipdelcommand	 {tooltipDelCommand	  TooltipDelCommand   w}
	-width			 {width			  Width		      w}
	-xscrollcommand		 {xScrollCommand	  ScrollCommand	      w}
	-yscrollcommand		 {yScrollCommand	  ScrollCommand	      w}
    }

    #
    # Extend the elements of the array configSpecs
    #
    extendConfigSpecs 

    variable configOpts [lsort [array names configSpecs]]

    #
    # The array colConfigSpecs is used to handle column configuration options.
    # The names of its elements are the column configuration options for the
    # Tablelist widget class.  The value of an array element is either an alias
    # name or a list containing the database name and class.
    #
    #	Command-Line Name	{Database Name		Database Class	}
    #	-----------------------------------------------------------------
    #
    variable colConfigSpecs
    array set colConfigSpecs {
	-align			{align			Align		}
	-background		{background		Background	}
	-bg			-background
	-changesnipside		{changeSnipSide		ChangeSnipSide	}
	-editable		{editable		Editable	}
	-editwindow		{editWindow		EditWindow	}
	-font			{font			Font		}
	-foreground		{foreground		Foreground	}
	-fg			-foreground
	-formatcommand		{formatCommand		FormatCommand	}
	-hide			{hide			Hide		}
	-labelalign		{labelAlign		Align		}
	-labelbackground	{labelBackground	Background	}
	-labelbg		-labelbackground
	-labelborderwidth	{labelBorderWidth	BorderWidth	}
	-labelbd		-labelborderwidth
	-labelcommand		{labelCommand		LabelCommand	}
	-labelcommand2		{labelCommand2		LabelCommand2	}
	-labelfont		{labelFont		Font		}
	-labelforeground	{labelForeground	Foreground	}
	-labelfg		-labelforeground
	-labelheight		{labelHeight		Height		}
	-labelimage		{labelImage		Image		}
	-labelpady		{labelPadY		Pad		}
	-labelrelief		{labelRelief		Relief		}
	-maxwidth		{maxWidth		MaxWidth	}
	-name			{name			Name		}
	-resizable		{resizable		Resizable	}
	-selectbackground	{selectBackground	Foreground	}
	-selectforeground	{selectForeground	Background	}
	-showarrow		{showArrow		ShowArrow	}
	-showlinenumbers	{showLineNumbers	ShowLineNumbers }
	-sortcommand		{sortCommand		SortCommand	}
	-sortmode		{sortMode		SortMode	}
	-stretchable		{stretchable		Stretchable	}
	-text			{text			Text		}
	-title			{title			Title		}
	-width			{width			Width		}
	-wrap			{wrap			Wrap		}
    }

    #
    # Extend some elements of the array colConfigSpecs
    #
    lappend colConfigSpecs(-align)		- left
    lappend colConfigSpecs(-changesnipside)	- 0
    lappend colConfigSpecs(-editable)		- 0
    lappend colConfigSpecs(-editwindow)		- entry
    lappend colConfigSpecs(-hide)		- 0
    lappend colConfigSpecs(-maxwidth)		- 0
    lappend colConfigSpecs(-resizable)		- 1
    lappend colConfigSpecs(-showarrow)		- 1
    lappend colConfigSpecs(-showlinenumbers)	- 0
    lappend colConfigSpecs(-sortmode)		- ascii
    lappend colConfigSpecs(-stretchable)	- 0
    lappend colConfigSpecs(-width)		- 0
    lappend colConfigSpecs(-wrap)		- 0

    if {$usingTile} {
	unset colConfigSpecs(-labelheight)
    }

    #
    # The array rowConfigSpecs is used to handle row configuration options.
    # The names of its elements are the row configuration options for the
    # Tablelist widget class.  The value of an array element is either an alias
    # name or a list containing the database name and class.
    #
    #	Command-Line Name	{Database Name		Database Class	}
    #	-----------------------------------------------------------------
    #
    variable rowConfigSpecs
    array set rowConfigSpecs {
	-background		{background		Background	}
	-bg			-background
	-font			{font			Font		}
	-foreground		{foreground		Foreground	}
	-fg			-foreground
	-hide			{hide			Hide		}
	-name			{name			Name		}
	-selectable		{selectable		Selectable	}
	-selectbackground	{selectBackground	Foreground	}
	-selectforeground	{selectForeground	Background	}
	-text			{text			Text		}
    }

    #
    # Check whether the -elide text widget tag option is available
    #
    variable canElide
    variable elide
    if {$::tk_version >= 8.3} {
	set canElide 1
	set elide -elide
    } else {
	set canElide 0
	set elide --
    }

    #
    # Extend some elements of the array rowConfigSpecs
    #
    if {$canElide} {
	lappend rowConfigSpecs(-hide)	- 0
    } else {
	unset rowConfigSpecs(-hide)
    }
    lappend rowConfigSpecs(-selectable)	- 1

    #
    # The array cellConfigSpecs is used to handle cell configuration options.
    # The names of its elements are the cell configuration options for the
    # Tablelist widget class.  The value of an array element is either an alias
    # name or a list containing the database name and class.
    #
    #	Command-Line Name	{Database Name		Database Class	}
    #	-----------------------------------------------------------------
    #
    variable cellConfigSpecs
    array set cellConfigSpecs {
	-background		{background		Background	}
	-bg			-background
	-editable		{editable		Editable	}
	-editwindow		{editWindow		EditWindow	}
	-font			{font			Font		}
	-foreground		{foreground		Foreground	}
	-fg			-foreground
	-image			{image			Image		}
	-selectbackground	{selectBackground	Foreground	}
	-selectforeground	{selectForeground	Background	}
	-stretchwindow		{stretchWindow		StretchWindow	}
	-text			{text			Text		}
	-window			{window			Window		}
	-windowdestroy		{windowDestroy		WindowDestroy	}
    }

    #
    # Extend some elements of the array cellConfigSpecs
    #
    lappend cellConfigSpecs(-editable)		- 0
    lappend cellConfigSpecs(-editwindow)	- entry
    lappend cellConfigSpecs(-stretchwindow)	- 0

    #
    # Use a list to facilitate the handling of the command options 
    #
    variable cmdOpts [list \
	activate activatecell attrib bbox bodypath bodytag cancelediting \
	cellattrib cellcget cellconfigure cellindex cellselection cget \
	columnattrib columncget columnconfigure columncount columnindex \
	columnwidth config configcelllist configcells configcolumnlist \
	configcolumns configrowlist configrows configure containing \
	containingcell containingcolumn curcellselection curselection delete \
	deletecolumns editcell editwintag editwinpath entrypath fillcolumn \
	finishediting formatinfo get getcells getcolumns getkeys hasattrib \
	hascellattrib hascolumnattrib hasrowattrib imagelabelpath index \
	insert insertcolumnlist insertcolumns insertlist iselemsnipped \
	istitlesnipped itemlistvar labelpath labels labeltag move movecolumn \
	nearest nearestcell nearestcolumn rejectinput resetsortinfo rowattrib \
	rowcget rowconfigure scan see seecell seecolumn selection \
	separatorpath separators size sort sortbycolumn sortbycolumnlist \
	sortcolumn sortcolumnlist sortorder sortorderlist togglecolumnhide \
	togglerowhide unsetattrib unsetcellattrib unsetcolumnattrib \
	unsetrowattrib windowpath xview yview]
    if {!$canElide} {
	set idx [lsearch -exact $cmdOpts togglerowhide]
	set cmdOpts [lreplace $cmdOpts $idx $idx]
    }

    #
    # Use lists to facilitate the handling of miscellaneous options
    #
    variable activeStyles	[list frame none underline]
    variable alignments		[list left right center]
    variable arrowStyles	[list flat7x4 flat7x5 flat7x7 flat8x5 flat9x5 \
				 sunken8x7 sunken10x9 sunken12x11]
    variable arrowTypes		[list up down]
    variable colWidthOpts	[list -requested -stretched -total]
    variable states		[list disabled normal]
    variable selectTypes	[list row cell]
    variable sortModes		[list ascii command dictionary integer real]
    variable sortOrders		[list increasing decreasing]
    variable _sortOrders	[list -increasing -decreasing]
    variable scanCmdOpts	[list mark dragto]
    variable selCmdOpts		[list anchor clear includes set]

    #
    # Define the procedure strToDispStr, which returns the string
    # obtained by replacing all \t characters in its argument with
    # \\t, as well as the procedure strMap, needed because the
    # "string map" command is not available in Tcl 8.0 and 8.1.0.
    #
    if {[catch {string map {} ""}] == 0} {
	proc strToDispStr str {
	    if {[string match "*\t*" $str]} {
		return [string map {"\t" "\\t"} $str]
	    } else {
		return $str
	    }
	}

	interp alias {} ::tablelist::strMap {} string map
    } else {
	proc strToDispStr str {
	    if {[string match "*\t*" $str]} {
		regsub -all "\t" $str "\\t" str
	    }

	    return $str
	}

	proc strMap {charMap str} {
	    foreach {key val} $charMap {
		#
		# We will only need this for noncritical key and str values
		#
		regsub -all $key $str $val str
	    }

	    return $str
	}
    }
}

#
# Private procedure creating the default bindings
# ===============================================
#

#------------------------------------------------------------------------------
# tablelist::createBindings
#
# Creates the default bindings for the binding tags Tablelist, TablelistWindow,
# TablelistKeyNav, TablelistBody, TablelistLabel, TablelistSubLabel,
# TablelistArrow, and TablelistEdit.
#------------------------------------------------------------------------------
proc tablelist::createBindings {} {
    #
    # Define some Tablelist class bindings
    #
    bind Tablelist <KeyPress> continue
    bind Tablelist <FocusIn> {
	if {![info exists tablelist::ns%W::data(dispId)]} {
	    tablelist::addActiveTag %W
	}

	if {[string compare [focus -lastfor %W] %W] == 0} {
	    if {[winfo exists [%W editwinpath]]} {
		focus [set tablelist::ns%W::data(editFocus)]
	    } else {
		focus [%W bodypath]
	    }
	}
    }
    bind Tablelist <FocusOut>		{ tablelist::removeActiveTag %W }
    bind Tablelist <<TablelistSelect>>	{ event generate %W <<ListboxSelect>> }
    bind Tablelist <Destroy>		{ tablelist::cleanup %W }
    variable usingTile
    if {$usingTile} {
	bind Tablelist <Activate>	{ tablelist::updateCanvases %W }
	bind Tablelist <Deactivate>	{ tablelist::updateCanvases %W }
	bind Tablelist <<ThemeChanged>>	{
	    after idle [list tablelist::updateConfigSpecs %W]
	}
    }

    #
    # Define some TablelistWindow class bindings
    #
    bind TablelistWindow <Destroy>	{ tablelist::cleanupWindow %W }

    #
    # Define the binding tags TablelistKeyNav and TablelistBody
    #
    mwutil::defineKeyNav Tablelist
    defineTablelistBody 

    #
    # Define the virtual events <<Button3>> and <<ShiftButton3>>
    #
    event add <<Button3>> <Button-3>
    event add <<ShiftButton3>> <Shift-Button-3>
    variable winSys
    if {[string compare $winSys "classic"] == 0 ||
	[string compare $winSys "aqua"] == 0} {
	event add <<Button3>> <Control-Button-1>
	event add <<ShiftButton3>> <Shift-Control-Button-1>
    }

    #
    # Define some mouse bindings for the binding tag TablelistLabel
    #
    bind TablelistLabel <Enter>		  { tablelist::labelEnter  %W %X %Y %x }
    bind TablelistLabel <Motion>	  { tablelist::labelEnter  %W %X %Y %x }
    bind TablelistLabel <Leave>		  { tablelist::labelLeave  %W %X %x %y }
    bind TablelistLabel <Button-1>	  { tablelist::labelB1Down %W %x 0 }
    bind TablelistLabel <Shift-Button-1>  { tablelist::labelB1Down %W %x 1 }
    bind TablelistLabel <B1-Motion>	{ tablelist::labelB1Motion %W %X %x %y }
    bind TablelistLabel <B1-Enter>	{ tablelist::labelB1Enter  %W }
    bind TablelistLabel <B1-Leave>	{ tablelist::labelB1Leave  %W %x %y }
    bind TablelistLabel <ButtonRelease-1> { tablelist::labelB1Up   %W %X}
    bind TablelistLabel <<Button3>>	  { tablelist::labelB3Down %W 0 }
    bind TablelistLabel <<ShiftButton3>>  { tablelist::labelB3Down %W 1 }
    bind TablelistLabel <Double-Button-1>	{ tablelist::labelDblB1 %W %x 0}
    bind TablelistLabel <Shift-Double-Button-1> { tablelist::labelDblB1 %W %x 1}

    #
    # Define the binding tags TablelistSubLabel and TablelistArrow
    #
    defineTablelistSubLabel 
    defineTablelistArrow 

    #
    # Define the binding tag TablelistEdit if the file tablelistEdit.tcl exists
    #
    catch {defineTablelistEdit}
}

#
# Public procedure creating a new tablelist widget
# ================================================
#

#------------------------------------------------------------------------------
# tablelist::tablelist
#
# Creates a new tablelist widget whose name is specified as the first command-
# line argument, and configures it according to the options and their values
# given on the command line.  Returns the name of the newly created widget.
#------------------------------------------------------------------------------
proc tablelist::tablelist args {
    variable usingTile
    variable configSpecs
    variable configOpts
    variable canElide

    if {[llength $args] == 0} {
	mwutil::wrongNumArgs "tablelist pathName ?options?"
    }

    #
    # Create a frame of the class Tablelist
    #
    set win [lindex $args 0]
    if {[catch {
	if {$usingTile} {
	    ttk::frame $win -style Frame$win.TFrame -class Tablelist \
			    -height 0 -width 0 -padding 0
	} else {
	    tk::frame $win -class Tablelist -container 0 -height 0 -width 0
	    catch {$win configure -padx 0 -pady 0}
	}
    } result] != 0} {
	return -code error $result
    }

    #
    # Create a namespace within the current one to hold the data of the widget
    #
    namespace eval ns$win {
	#
	# The folowing array holds various data for this widget
	#
	variable data
	array set data {
	    arrowWidth		 9
	    hasListVar		 0
	    isDisabled		 0
	    ownsFocus		 0
	    charWidth		 1
	    hdrPixels		 0
	    activeRow		 0
	    activeCol		 0
	    anchorRow		 0
	    anchorCol		 0
	    seqNum		-1
	    freeKeyList		 {}
	    itemList		 {}
	    itemCount		 0
	    lastRow		-1
	    colList		 {}
	    colCount		 0
	    lastCol		-1
	    rowTagRefCount	 0
	    cellTagRefCount	 0
	    imgCount		 0
	    winCount		 0
	    afterId		 ""
	    labelClicked	 0
	    arrowColList	 {}
	    sortColList		 {}
	    sortOrder		 ""
	    editRow		-1
	    editCol		-1
	    fmtKey		 ""
	    fmtRow		-1
	    fmtCol		-1
	    prevCell		 ""
	    prevCol		-1
	    forceAdjust		 0
	    fmtCmdFlagList	 {}
	    hasFmtCmds		 0
	    scrlColOffset	 0
	    cellsToReconfig	 {}
	    hiddenRowCount	 0
	    nonHiddenRowList	 {-1}
	    hiddenColCount	 0
	}

	#
	# The following array is used to hold arbitrary
	# attributes and their values for this widget
	#
	variable attribs
    }

    #
    # Initialize some further components of data
    #
    upvar ::tablelist::ns${win}::data data
    foreach opt $configOpts {
	set data($opt) [lindex $configSpecs($opt) 3]
    }
    if {$usingTile} {
	setThemeDefaults
	variable themeDefaults
	set data(currentTheme) [getCurrentTheme]
	set data(themeDefaults) [array get themeDefaults]
	if {[string compare $data(currentTheme) "tileqt"] == 0} {
	    set data(widgetStyle) [tileqt_currentThemeName]
	    set data(colorScheme) [getKdeConfigVal "KDE" "colorScheme"]
	} else {
	    set data(widgetStyle) ""
	    set data(colorScheme) ""
	}
    }
    set data(-titlecolumns)	0		;# for Tk versions < 8.3
    set data(colFontList)	[list $data(-font)]
    set data(listVarTraceCmd)	[list tablelist::listVarTrace $win]
    set data(bodyTag)		body$win
    set data(labelTag)		label$win
    set data(editwinTag)	editwin$win
    set data(body)		$win.body
    set data(bodyFr)		$data(body).f
    set data(bodyFrEd)		$data(bodyFr).e
    set data(rowGap)		$data(body).g
    set data(hdr)		$win.hdr
    set data(hdrTxt)		$data(hdr).t
    set data(hdrTxtFr)		$data(hdrTxt).f
    set data(hdrTxtFrCanv)	$data(hdrTxtFr).c
    set data(hdrTxtFrLbl)	$data(hdrTxtFr).l
    set data(hdrLbl)		$data(hdr).l
    set data(colGap)		$data(hdr).g
    set data(lb)		$win.lb
    set data(sep)		$win.sep

    #
    # Create a child hierarchy used to hold the column labels.  The
    # labels will be created as children of the frame data(hdrTxtFr),
    # which is embedded into the text widget data(hdrTxt) (in order
    # to make it scrollable), which in turn fills the frame data(hdr)
    # (whose width and height can be set arbitrarily in pixels).
    #
    set w $data(hdr)			;# header frame
    tk::frame $w -borderwidth 0 -container 0 -height 0 -highlightthickness 0 \
		 -relief flat -takefocus 0 -width 0
    catch {$w configure -padx 0 -pady 0}
    bind $w <Configure> {
	set tablelist::W [winfo parent %W]
	tablelist::stretchColumnsWhenIdle $tablelist::W
	tablelist::updateScrlColOffsetWhenIdle $tablelist::W
	tablelist::updateHScrlbarWhenIdle $tablelist::W
    }
    pack $w -fill x
    set w $data(hdrTxt)			;# text widget within the header frame
    text $w -borderwidth 0 -highlightthickness 0 -insertwidth 0 \
	    -padx 0 -pady 0 -state normal -takefocus 0 -wrap none
    place $w -relheight 1.0 -relwidth 1.0
    bindtags $w [lreplace [bindtags $w] 1 1]
    tk::frame $data(hdrTxtFr) -borderwidth 0 -container 0 -height 0 \
			      -highlightthickness 0 -relief flat \
			      -takefocus 0 -width 0
    catch {$data(hdrTxtFr) configure -padx 0 -pady 0}
    $w window create 1.0 -window $data(hdrTxtFr)
    set w $data(hdrLbl)			;# filler label within the header frame
    if {$usingTile} {
	ttk::label $data(hdrTxtFrLbl)0 -style TablelistHeader.TLabel
	ttk::label $w -style TablelistHeader.TLabel -image "" \
		      -padding {1 1 1 1} -takefocus 0 -text "" \
		      -textvariable "" -underline -1 -wraplength 0
    } else {
	tk::label $data(hdrTxtFrLbl)0 
	tk::label $w -bitmap "" -highlightthickness 0 -image "" \
		     -takefocus 0 -text "" -textvariable "" -underline -1 \
		     -wraplength 0
    }
    place $w -relheight 1.0 -relwidth 1.0

    #
    # Create the body text widget within the main frame
    #
    set w $data(body)
    text $w -borderwidth 0 -exportselection 0 -highlightthickness 0 \
	    -insertwidth 0 -padx 0 -pady 0 -state normal -takefocus 0 -wrap none
    bind $w <Configure> {
	set tablelist::W [winfo parent %W]
	tablelist::makeColFontAndTagLists $tablelist::W
	tablelist::adjustElidedTextWhenIdle $tablelist::W
	tablelist::updateColorsWhenIdle $tablelist::W
	tablelist::adjustSepsWhenIdle $tablelist::W
	tablelist::updateVScrlbarWhenIdle $tablelist::W
    }
    pack $w -expand 1 -fill both

    #
    # Modify the list of binding tags of the body text widget
    #
    bindtags $w [list $w $data(bodyTag) TablelistBody [winfo toplevel $w] \
		 TablelistKeyNav all]

    #
    # Create the "stripe", "select", "active", "disabled", "hiddenRow",
    # "hiddenCol", and "elidedCol" tags in the body text widget.  Don't
    # use the built-in "sel" tag because on Windows the selection in a
    # text widget only becomes visible when the window gets the input
    # focus.  DO NOT CHANGE the order of creation of these tags!
    #
    $w tag configure stripe -background "" -foreground ""    ;# will be changed
    $w tag configure select -relief raised
    $w tag configure active -borderwidth ""		     ;# will be changed
    $w tag configure disabled -foreground ""		     ;# will be changed
    if {$canElide} {
	$w tag configure hiddenRow -elide 1
	$w tag configure hiddenCol -elide 1
	$w tag configure elidedCol -elide 1
    }

    #
    # Create two frames used to display a gap between two consecutive
    # rows/columns when moving a row/column interactively
    #
    tk::frame $data(rowGap) -borderwidth 1 -container 0 -highlightthickness 0 \
			    -relief sunken -takefocus 0 -height 4
    tk::frame $data(colGap) -borderwidth 1 -container 0 -highlightthickness 0 \
			    -relief sunken -takefocus 0 -width 4

    #
    # Create an unmanaged listbox child, used to handle the -setgrid option
    #
    listbox $data(lb)

    #
    # Create the bitmaps needed to display the sort ranks
    #
    createSortRankImgs $win

    #
    # Configure the widget according to the command-line
    # arguments and to the available database options
    #
    if {[catch {
	mwutil::configureWidget $win configSpecs tablelist::doConfig \
				tablelist::doCget [lrange $args 1 end] 1
    } result] != 0} {
	destroy $win
	return -code error $result
    }

    #
    # Move the original widget command into the current namespace and
    # create an alias of the original name for a new widget procedure
    #
    rename ::$win $win
    interp alias {} ::$win {} tablelist::tablelistWidgetCmd $win

    #
    # Register a callback to be invoked whenever the PRIMARY
    # selection is owned by the window win and someone
    # attempts to retrieve it as a UTF8_STRING or STRING
    #
    selection handle -type UTF8_STRING $win \
	[list ::tablelist::fetchSelection $win]
    selection handle -type STRING $win \
	[list ::tablelist::fetchSelection $win]

    #
    # Set a trace on the array elements data(activeRow),
    # data(avtiveCol), and data(-selecttype)
    #
    foreach name {activeRow activeCol -selecttype} {
	trace variable data($name) w [list tablelist::activeTrace $win]
    }

    return $win
}

#
# Private procedures implementing the tablelist widget command
# ============================================================
#

#------------------------------------------------------------------------------
# tablelist::tablelistWidgetCmd
#
# Processes the Tcl command corresponding to a tablelist widget.
#------------------------------------------------------------------------------
proc tablelist::tablelistWidgetCmd {win args} {
    if {[llength $args] == 0} {
	mwutil::wrongNumArgs "$win option ?arg arg ...?"
    }

    variable cmdOpts
    set cmd [mwutil::fullOpt "option" [lindex $args 0] $cmdOpts]
    return [${cmd}SubCmd $win [lrange $args 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::activateSubCmd
#------------------------------------------------------------------------------
proc tablelist::activateSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win activate index"
    }

    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    synchronize $win
    displayItems $win
    set index [rowIndex $win [lindex $argList 0] 0]

    #
    # Adjust the index to fit within the existing non-hidden items
    #
    adjustRowIndex $win index 1

    set data(activeRow) $index
    return ""
}

#------------------------------------------------------------------------------
# tablelist::activatecellSubCmd
#------------------------------------------------------------------------------
proc tablelist::activatecellSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win activatecell cellIndex"
    }

    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    synchronize $win
    displayItems $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 0] {}

    #
    # Adjust the row and column indices to fit
    # within the existing non-hidden elements
    #
    adjustRowIndex $win row 1
    adjustColIndex $win col 1

    set data(activeRow) $row
    set data(activeCol) $col
    return ""
}

#------------------------------------------------------------------------------
# tablelist::attribSubCmd
#------------------------------------------------------------------------------
proc tablelist::attribSubCmd {win argList} {
    return [mwutil::attribSubCmd $win "widget" $argList]
}

#------------------------------------------------------------------------------
# tablelist::bboxSubCmd
#------------------------------------------------------------------------------
proc tablelist::bboxSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win bbox index"
    }

    synchronize $win
    displayItems $win
    set index [rowIndex $win [lindex $argList 0] 0]

    upvar ::tablelist::ns${win}::data data
    set w $data(body)
    set dlineinfo [$w dlineinfo [expr {double($index + 1)}]]
    if {$data(itemCount) == 0 || [string compare $dlineinfo ""] == 0} {
	return {}
    }

    set spacing1 [$w cget -spacing1]
    set spacing3 [$w cget -spacing3]
    foreach {x y width height baselinePos} $dlineinfo {}
    lappend bbox [expr {$x + [winfo x $w]}] \
		 [expr {$y + [winfo y $w] + $spacing1}] \
		 $width [expr {$height - $spacing1 - $spacing3}]
    return $bbox
}

#------------------------------------------------------------------------------
# tablelist::bodypathSubCmd
#------------------------------------------------------------------------------
proc tablelist::bodypathSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win bodypath"
    }

    upvar ::tablelist::ns${win}::data data
    return $data(body)
}

#------------------------------------------------------------------------------
# tablelist::bodytagSubCmd
#------------------------------------------------------------------------------
proc tablelist::bodytagSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win bodytag"
    }

    upvar ::tablelist::ns${win}::data data
    return $data(bodyTag)
}

#------------------------------------------------------------------------------
# tablelist::canceleditingSubCmd
#------------------------------------------------------------------------------
proc tablelist::canceleditingSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win cancelediting"
    }

    synchronize $win
    displayItems $win
    return [doCancelEditing $win]
}

#------------------------------------------------------------------------------
# tablelist::cellattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::cellattribSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win cellattrib cellIndex ?name? ?value\
			      name value ...?"
    }

    synchronize $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    upvar ::tablelist::ns${win}::data data
    set key [lindex [lindex $data(itemList) $row] end]
    return [mwutil::attribSubCmd $win $key,$col [lrange $argList 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::cellcgetSubCmd
#------------------------------------------------------------------------------
proc tablelist::cellcgetSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win cellcget cellIndex option"
    }

    synchronize $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    variable cellConfigSpecs
    set opt [mwutil::fullConfigOpt [lindex $argList 1] cellConfigSpecs]
    return [doCellCget $row $col $win $opt]
}

#------------------------------------------------------------------------------
# tablelist::cellconfigureSubCmd
#------------------------------------------------------------------------------
proc tablelist::cellconfigureSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win cellconfigure cellIndex ?option? ?value\
			      option value ...?"
    }

    synchronize $win
    displayItems $win
    variable cellConfigSpecs
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    return [mwutil::configureSubCmd $win cellConfigSpecs \
	    "tablelist::doCellConfig $row $col" \
	    "tablelist::doCellCget $row $col" [lrange $argList 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::cellindexSubCmd
#------------------------------------------------------------------------------
proc tablelist::cellindexSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win cellindex cellIndex"
    }

    synchronize $win
    return [join [cellIndex $win [lindex $argList 0] 0] ","]
}

#------------------------------------------------------------------------------
# tablelist::cellselectionSubCmd
#------------------------------------------------------------------------------
proc tablelist::cellselectionSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 2 || $argCount > 3} {
	mwutil::wrongNumArgs \
		"$win cellselection option firstCellIndex lastCellIndex" \
		"$win cellselection option cellIndexList"
    }

    synchronize $win
    displayItems $win
    variable selCmdOpts
    set opt [mwutil::fullOpt "option" [lindex $argList 0] $selCmdOpts]
    set first [lindex $argList 1]

    switch $opt {
	anchor -
	includes {
	    if {$argCount != 2} {
		mwutil::wrongNumArgs "$win cellselection $opt cellIndex"
	    }
	    foreach {row col} [cellIndex $win $first 0] {}
	    return [cellSelection $win $opt $row $col $row $col]
	}

	clear -
	set {
	    if {$argCount == 2} {
		foreach elem $first {
		    foreach {row col} [cellIndex $win $elem 0] {}
		    cellSelection $win $opt $row $col $row $col
		}
		return ""
	    } else {
		foreach {firstRow firstCol} [cellIndex $win $first 0] {}
		foreach {lastRow lastCol} \
			[cellIndex $win [lindex $argList 2] 0] {}
		return [cellSelection $win $opt \
			$firstRow $firstCol $lastRow $lastCol]
	    }
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::cgetSubCmd
#------------------------------------------------------------------------------
proc tablelist::cgetSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win cget option"
    }

    #
    # Return the value of the specified configuration option
    #
    variable configSpecs
    set opt [mwutil::fullConfigOpt [lindex $argList 0] configSpecs]
    return [doCget $win $opt]
}

#------------------------------------------------------------------------------
# tablelist::columnattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::columnattribSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win columnattrib columnIndex ?name? ?value\
			      name value ...?"
    }

    set col [colIndex $win [lindex $argList 0] 1]
    return [mwutil::attribSubCmd $win $col [lrange $argList 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::columncgetSubCmd
#------------------------------------------------------------------------------
proc tablelist::columncgetSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win columncget columnIndex option"
    }

    set col [colIndex $win [lindex $argList 0] 1]
    variable colConfigSpecs
    set opt [mwutil::fullConfigOpt [lindex $argList 1] colConfigSpecs]
    return [doColCget $col $win $opt]
}

#------------------------------------------------------------------------------
# tablelist::columnconfigureSubCmd
#------------------------------------------------------------------------------
proc tablelist::columnconfigureSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win columnconfigure columnIndex ?option? ?value\
			      option value ...?"
    }

    synchronize $win
    displayItems $win
    variable colConfigSpecs
    set col [colIndex $win [lindex $argList 0] 1]
    return [mwutil::configureSubCmd $win colConfigSpecs \
	    "tablelist::doColConfig $col" "tablelist::doColCget $col" \
	    [lrange $argList 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::columncountSubCmd
#------------------------------------------------------------------------------
proc tablelist::columncountSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win columncount"
    }

    upvar ::tablelist::ns${win}::data data
    return $data(colCount)
}

#------------------------------------------------------------------------------
# tablelist::columnindexSubCmd
#------------------------------------------------------------------------------
proc tablelist::columnindexSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win columnindex columnIndex"
    }

    return [colIndex $win [lindex $argList 0] 0]
}

#------------------------------------------------------------------------------
# tablelist::columnwidthSubCmd
#------------------------------------------------------------------------------
proc tablelist::columnwidthSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs "$win columnwidth columnIndex\
			      ?-requested|-stretched|-total?"
    }

    synchronize $win
    displayItems $win
    set col [colIndex $win [lindex $argList 0] 1]
    if {$argCount == 1} {
	set opt -requested
    } else {
	variable colWidthOpts
	set opt [mwutil::fullOpt "option" [lindex $argList 1] $colWidthOpts]
    }
    return [colWidth $win $col $opt]
}

#------------------------------------------------------------------------------
# tablelist::configSubCmd
#------------------------------------------------------------------------------
proc tablelist::configSubCmd {win argList} {
    return [configureSubCmd $win $argList]
}

#------------------------------------------------------------------------------
# tablelist::configcelllistSubCmd
#------------------------------------------------------------------------------
proc tablelist::configcelllistSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win configcelllist cellConfigSpecList"
    }

    return [configcellsSubCmd $win [lindex $argList 0]]
}

#------------------------------------------------------------------------------
# tablelist::configcellsSubCmd
#------------------------------------------------------------------------------
proc tablelist::configcellsSubCmd {win argList} {
    synchronize $win
    displayItems $win
    variable cellConfigSpecs

    set argCount [llength $argList]
    foreach {cell opt val} $argList {
	if {$argCount == 1} {
	    return -code error "option and value for \"$cell\" missing"
	} elseif {$argCount == 2} {
	    return -code error "value for \"$opt\" missing"
	}
	foreach {row col} [cellIndex $win $cell 1] {}
	mwutil::configureWidget $win cellConfigSpecs \
		"tablelist::doCellConfig $row $col" \
		"tablelist::doCellCget $row $col" [list $opt $val] 0
	incr argCount -3
    }

    return ""
}

#------------------------------------------------------------------------------
# tablelist::configcolumnlistSubCmd
#------------------------------------------------------------------------------
proc tablelist::configcolumnlistSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win configcolumnlist columnConfigSpecList"
    }

    return [configcolumnsSubCmd $win [lindex $argList 0]]
}

#------------------------------------------------------------------------------
# tablelist::configcolumnsSubCmd
#------------------------------------------------------------------------------
proc tablelist::configcolumnsSubCmd {win argList} {
    synchronize $win
    displayItems $win
    variable colConfigSpecs

    set argCount [llength $argList]
    foreach {col opt val} $argList {
	if {$argCount == 1} {
	    return -code error "option and value for \"$col\" missing"
	} elseif {$argCount == 2} {
	    return -code error "value for \"$opt\" missing"
	}
	set col [colIndex $win $col 1]
	mwutil::configureWidget $win colConfigSpecs \
		"tablelist::doColConfig $col" "tablelist::doColCget $col" \
		[list $opt $val] 0
	incr argCount -3
    }

    return ""
}

#------------------------------------------------------------------------------
# tablelist::configrowlistSubCmd
#------------------------------------------------------------------------------
proc tablelist::configrowlistSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win configrowlist rowConfigSpecList"
    }

    return [configrowsSubCmd $win [lindex $argList 0]]
}

#------------------------------------------------------------------------------
# tablelist::configrowsSubCmd
#------------------------------------------------------------------------------
proc tablelist::configrowsSubCmd {win argList} {
    synchronize $win
    displayItems $win
    variable rowConfigSpecs
    upvar ::tablelist::ns${win}::data data

    set argCount [llength $argList]
    foreach {rowSpec opt val} $argList {
	if {$argCount == 1} {
	    return -code error "option and value for \"$rowSpec\" missing"
	} elseif {$argCount == 2} {
	    return -code error "value for \"$opt\" missing"
	}
	set row [rowIndex $win $rowSpec 0]
	if {$row < 0 || $row > $data(lastRow)} {
	    return -code error "row index \"$rowSpec\" out of range"
	}
	mwutil::configureWidget $win rowConfigSpecs \
		"tablelist::doRowConfig $row" "tablelist::doRowCget $row" \
		[list $opt $val] 0
	incr argCount -3
    }

    return ""
}

#------------------------------------------------------------------------------
# tablelist::configureSubCmd
#------------------------------------------------------------------------------
proc tablelist::configureSubCmd {win argList} {
    variable configSpecs
    return [mwutil::configureSubCmd $win configSpecs tablelist::doConfig \
	    tablelist::doCget $argList]
}

#------------------------------------------------------------------------------
# tablelist::containingSubCmd
#------------------------------------------------------------------------------
proc tablelist::containingSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win containing y"
    }

    set y [format "%d" [lindex $argList 0]]
    synchronize $win
    displayItems $win
    return [containingRow $win $y]
}

#------------------------------------------------------------------------------
# tablelist::containingcellSubCmd
#------------------------------------------------------------------------------
proc tablelist::containingcellSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win containingcell x y"
    }

    set x [format "%d" [lindex $argList 0]]
    set y [format "%d" [lindex $argList 1]]
    synchronize $win
    displayItems $win
    return [containingRow $win $y],[containingCol $win $x]
}

#------------------------------------------------------------------------------
# tablelist::containingcolumnSubCmd
#------------------------------------------------------------------------------
proc tablelist::containingcolumnSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win containingcolumn x"
    }

    set x [format "%d" [lindex $argList 0]]
    synchronize $win
    displayItems $win
    return [containingCol $win $x]
}

#------------------------------------------------------------------------------
# tablelist::curcellselectionSubCmd
#------------------------------------------------------------------------------
proc tablelist::curcellselectionSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win curcellselection"
    }

    synchronize $win
    displayItems $win
    return [curCellSelection $win]
}

#------------------------------------------------------------------------------
# tablelist::curselectionSubCmd
#------------------------------------------------------------------------------
proc tablelist::curselectionSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win curselection"
    }

    synchronize $win
    displayItems $win
    return [curSelection $win]
}

#------------------------------------------------------------------------------
# tablelist::deleteSubCmd
#------------------------------------------------------------------------------
proc tablelist::deleteSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs "$win delete firstIndex lastIndex" \
			     "$win delete indexList"
    }

    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    synchronize $win
    displayItems $win
    set first [lindex $argList 0]

    if {$argCount == 1} {
	if {[llength $first] == 1} {			;# just to save time
	    set index [rowIndex $win [lindex $first 0] 0]
	    return [deleteRows $win $index $index $data(hasListVar)]
	} elseif {$data(itemCount) == 0} {		;# no items present
	    return ""
	} else {					;# a bit more work
	    #
	    # Sort the numerical equivalents of the
	    # specified indices in decreasing order
	    #
	    set indexList {}
	    foreach elem $first {
		set index [rowIndex $win $elem 0]
		if {$index < 0} {
		    set index 0
		} elseif {$index > $data(lastRow)} {
		    set index $data(lastRow)
		}
		lappend indexList $index
	    }
	    set indexList [lsort -integer -decreasing $indexList]

	    #
	    # Traverse the sorted index list and ignore any duplicates
	    #
	    set prevIndex -1
	    foreach index $indexList {
		if {$index != $prevIndex} {
		    deleteRows $win $index $index $data(hasListVar)
		    set prevIndex $index
		}
	    }
	    return ""
	}
    } else {
	set first [rowIndex $win $first 0]
	set last [rowIndex $win [lindex $argList 1] 0]
	return [deleteRows $win $first $last $data(hasListVar)]
    }
}

#------------------------------------------------------------------------------
# tablelist::deletecolumnsSubCmd
#------------------------------------------------------------------------------
proc tablelist::deletecolumnsSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs \
		"$win deletecolumns firstColumnIndex lastColumnIndex" \
		"$win deletecolumns columnIndexList"
    }

    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    synchronize $win
    displayItems $win
    set first [lindex $argList 0]

    if {$argCount == 1} {
	if {[llength $first] == 1} {			;# just to save time
	    set col [colIndex $win [lindex $first 0] 1]
	    set selCells [curCellSelection $win]
	    deleteCols $win $col $col selCells
	    redisplay $win 0 $selCells
	} elseif {$data(colCount) == 0} {		;# no columns present
	    return ""
	} else {					;# a bit more work
	    #
	    # Sort the numerical equivalents of the
	    # specified column indices in decreasing order
	    #
	    set colList {}
	    foreach elem $first {
		lappend colList [colIndex $win $elem 1]
	    }
	    set colList [lsort -integer -decreasing $colList]

	    #
	    # Traverse the sorted column index list and ignore any duplicates
	    #
	    set selCells [curCellSelection $win]
	    set deleted 0
	    set prevCol -1
	    foreach col $colList {
		if {$col != $prevCol} {
		    deleteCols $win $col $col selCells
		    set deleted 1
		    set prevCol $col
		}
	    }
	    if {$deleted} {
		redisplay $win 0 $selCells
	    }
	}
    } else {
	set first [colIndex $win $first 1]
	set last [colIndex $win [lindex $argList 1] 1]
	if {$first <= $last} {
	    set selCells [curCellSelection $win]
	    deleteCols $win $first $last selCells
	    redisplay $win 0 $selCells
	}
    }

    return ""
}

#------------------------------------------------------------------------------
# tablelist::editcellSubCmd
#------------------------------------------------------------------------------
proc tablelist::editcellSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win editcell cellIndex"
    }

    synchronize $win
    displayItems $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    return [doEditCell $win $row $col 0]
}

#------------------------------------------------------------------------------
# tablelist::editwintagSubCmd
#------------------------------------------------------------------------------
proc tablelist::editwintagSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win editwintag"
    }

    upvar ::tablelist::ns${win}::data data
    return $data(editwinTag)
}

#------------------------------------------------------------------------------
# tablelist::editwinpathSubCmd
#------------------------------------------------------------------------------
proc tablelist::editwinpathSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win editwinpath"
    }

    upvar ::tablelist::ns${win}::data data
    if {[winfo exists $data(bodyFrEd)]} {
	return $data(bodyFrEd)
    } else {
	return ""
    }
}

#------------------------------------------------------------------------------
# tablelist::entrypathSubCmd
#------------------------------------------------------------------------------
proc tablelist::entrypathSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win entrypath"
    }

    upvar ::tablelist::ns${win}::data data
    if {[winfo exists $data(bodyFrEd)]} {
	set class [winfo class $data(bodyFrEd)]
	if {[regexp {^(Mentry|T?Checkbutton)$} $class]} {
	    return ""
	} else {
	    return $data(editFocus)
	}
    } else {
	return ""
    }
}

#------------------------------------------------------------------------------
# tablelist::fillcolumnSubCmd
#------------------------------------------------------------------------------
proc tablelist::fillcolumnSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win fillcolumn columnIndex text"
    }

    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    synchronize $win
    displayItems $win
    set colIdx [colIndex $win [lindex $argList 0] 1]
    set text [lindex $argList 1]

    #
    # Update the item list
    #
    set newItemList {}
    foreach item $data(itemList) {
	set item [lreplace $item $colIdx $colIdx $text]
	lappend newItemList $item
    }
    set data(itemList) $newItemList

    #
    # Update the list variable if present
    #
    condUpdateListVar $win

    #
    # Adjust the columns and make sure the specified
    # column will be redisplayed at idle time
    #
    adjustColumns $win $colIdx 1
    redisplayColWhenIdle $win $colIdx
    return ""
}

#------------------------------------------------------------------------------
# tablelist::finisheditingSubCmd
#------------------------------------------------------------------------------
proc tablelist::finisheditingSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win finishediting"
    }

    synchronize $win
    displayItems $win
    return [doFinishEditing $win]
}

#------------------------------------------------------------------------------
# tablelist::formatinfoSubCmd
#------------------------------------------------------------------------------
proc tablelist::formatinfoSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win formatinfo"
    }

    upvar ::tablelist::ns${win}::data data
    return [list $data(fmtKey) $data(fmtRow) $data(fmtCol)]
}

#------------------------------------------------------------------------------
# tablelist::getSubCmd
#------------------------------------------------------------------------------
proc tablelist::getSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs "$win get firstIndex lastIndex" \
			     "$win get indexList"
    }

    synchronize $win
    set first [lindex $argList 0]

    #
    # Get the specified items from the internal list
    #
    upvar ::tablelist::ns${win}::data data
    set result {}
    if {$argCount == 1} {
	foreach elem $first {
	    set index [rowIndex $win $elem 0]
	    if {$index >= 0 && $index < $data(itemCount)} {
		set item [lindex $data(itemList) $index]
		lappend result [lrange $item 0 $data(lastCol)]
	    }
	}

	if {[llength $first] == 1} {
	    return [lindex $result 0]
	} else {
	    return $result
	}
    } else {
	set first [rowIndex $win $first 0]
	set last [rowIndex $win [lindex $argList 1] 0]

	#
	# Adjust the range to fit within the existing items
	#
	if {$first > $data(lastRow)} {
	    return {}
	}
	if {$first < 0} {
	    set first 0
	}
	if {$last > $data(lastRow)} {
	    set last $data(lastRow)
	}

	foreach item [lrange $data(itemList) $first $last] {
	    lappend result [lrange $item 0 $data(lastCol)]
	}
	return $result
    }
}

#------------------------------------------------------------------------------
# tablelist::getcellsSubCmd
#------------------------------------------------------------------------------
proc tablelist::getcellsSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs \
		"$win getcells firstCellIndex lastCellIndex" \
		"$win getcells cellIndexList"
    }

    synchronize $win
    set first [lindex $argList 0]

    #
    # Get the specified elements from the internal list
    #
    upvar ::tablelist::ns${win}::data data
    set result {}
    if {$argCount == 1} {
	foreach elem $first {
	    foreach {row col} [cellIndex $win $elem 1] {}
	    lappend result [lindex [lindex $data(itemList) $row] $col]
	}

	if {[llength $first] == 1} {
	    return [lindex $result 0]
	} else {
	    return $result
	}
    } else {
	foreach {firstRow firstCol} [cellIndex $win $first 1] {}
	foreach {lastRow lastCol} [cellIndex $win [lindex $argList 1] 1] {}

	foreach item [lrange $data(itemList) $firstRow $lastRow] {
	    foreach elem [lrange $item $firstCol $lastCol] {
		lappend result $elem
	    }
	}
	return $result
    }
}

#------------------------------------------------------------------------------
# tablelist::getcolumnsSubCmd
#------------------------------------------------------------------------------
proc tablelist::getcolumnsSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs \
		"$win getcolumns firstColumnIndex lastColumnIndex" \
		"$win getcolumns columnIndexList"
    }

    synchronize $win
    set first [lindex $argList 0]

    #
    # Get the specified columns from the internal list
    #
    upvar ::tablelist::ns${win}::data data
    set result {}
    if {$argCount == 1} {
	foreach elem $first {
	    set col [colIndex $win $elem 1]
	    set colResult {}
	    foreach item $data(itemList) {
		lappend colResult [lindex $item $col]
	    }
	    lappend result $colResult
	}

	if {[llength $first] == 1} {
	    return [lindex $result 0]
	} else {
	    return $result
	}
    } else {
	set first [colIndex $win $first 1]
	set last [colIndex $win [lindex $argList 1] 1]

	for {set col $first} {$col <= $last} {incr col} {
	    set colResult {}
	    foreach item $data(itemList) {
		lappend colResult [lindex $item $col]
	    }
	    lappend result $colResult
	}
	return $result
    }
}

#------------------------------------------------------------------------------
# tablelist::getkeysSubCmd
#------------------------------------------------------------------------------
proc tablelist::getkeysSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs "$win getkeys firstIndex lastIndex" \
			     "$win getkeys indexList"
    }

    synchronize $win
    set first [lindex $argList 0]

    #
    # Get the specified keys from the internal list
    #
    upvar ::tablelist::ns${win}::data data
    set result {}
    if {$argCount == 1} {
	foreach elem $first {
	    set index [rowIndex $win $elem 0]
	    if {$index >= 0 && $index < $data(itemCount)} {
		set item [lindex $data(itemList) $index]
		lappend result [string range [lindex $item end] 1 end]
	    }
	}

	if {[llength $first] == 1} {
	    return [lindex $result 0]
	} else {
	    return $result
	}
    } else {
	set first [rowIndex $win $first 0]
	set last [rowIndex $win [lindex $argList 1] 0]

	#
	# Adjust the range to fit within the existing items
	#
	if {$first > $data(lastRow)} {
	    return {}
	}
	if {$first < 0} {
	    set first 0
	}
	if {$last > $data(lastRow)} {
	    set last $data(lastRow)
	}

	foreach item [lrange $data(itemList) $first $last] {
	    lappend result [string range [lindex $item end] 1 end]
	}
	return $result
    }
}

#------------------------------------------------------------------------------
# tablelist::hasattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::hasattribSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win hasattrib name"
    }

    return [mwutil::hasattribSubCmd $win "widget" [lindex $argList 0]]
}

#------------------------------------------------------------------------------
# tablelist::hascellattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::hascellattribSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win hascellattrib cellIndex name"
    }

    synchronize $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    upvar ::tablelist::ns${win}::data data
    set key [lindex [lindex $data(itemList) $row] end]
    return [mwutil::hasattribSubCmd $win $key,$col [lindex $argList 1]]
}

#------------------------------------------------------------------------------
# tablelist::hascolumnattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::hascolumnattribSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win hascolumnattrib columnIndex name"
    }

    set col [colIndex $win [lindex $argList 0] 1]
    return [mwutil::hasattribSubCmd $win $col [lindex $argList 1]]
}

#------------------------------------------------------------------------------
# tablelist::hasrowattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::hasrowattribSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win hasrowattrib index name"
    }

    synchronize $win
    set rowSpec [lindex $argList 0]
    set row [rowIndex $win $rowSpec 0]
    upvar ::tablelist::ns${win}::data data
    if {$row < 0 || $row > $data(lastRow)} {
	return -code error "row index \"$rowSpec\" out of range"
    }
    set key [lindex [lindex $data(itemList) $row] end]
    return [mwutil::hasattribSubCmd $win $key [lindex $argList 1]]
}

#------------------------------------------------------------------------------
# tablelist::imagelabelpathSubCmd
#------------------------------------------------------------------------------
proc tablelist::imagelabelpathSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win imagelabelpath cellIndex"
    }

    synchronize $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    upvar ::tablelist::ns${win}::data data
    set key [lindex [lindex $data(itemList) $row] end]
    set w $data(body).l$key,$col
    if {[winfo exists $w]} {
	return $w
    } else {
	return ""
    }
}

#------------------------------------------------------------------------------
# tablelist::indexSubCmd
#------------------------------------------------------------------------------
proc tablelist::indexSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win index index"
    }

    synchronize $win
    return [rowIndex $win [lindex $argList 0] 1]
}

#------------------------------------------------------------------------------
# tablelist::insertSubCmd
#------------------------------------------------------------------------------
proc tablelist::insertSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win insert index ?item item ...?"
    }

    synchronize $win
    set index [rowIndex $win [lindex $argList 0] 1]
    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    return [insertRows $win $index [lrange $argList 1 end] $data(hasListVar)]
}

#------------------------------------------------------------------------------
# tablelist::insertcolumnlistSubCmd
#------------------------------------------------------------------------------
proc tablelist::insertcolumnlistSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win insertcolumnlist columnIndex columnList"
    }

    synchronize $win
    displayItems $win
    set arg0 [lindex $argList 0]
    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    if {[string first $arg0 "end"] == 0 || $arg0 == $data(colCount)} {
	set col $data(colCount)
    } else {
	set col [colIndex $win $arg0 1]
    }
    return [insertCols $win $col [lindex $argList 1]]
}

#------------------------------------------------------------------------------
# tablelist::insertcolumnsSubCmd
#------------------------------------------------------------------------------
proc tablelist::insertcolumnsSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win insertcolumns columnIndex\
		?width title ?alignment? width title ?alignment? ...?"
    }

    synchronize $win
    displayItems $win
    set arg0 [lindex $argList 0]
    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    if {[string first $arg0 "end"] == 0 || $arg0 == $data(colCount)} {
	set col $data(colCount)
    } else {
	set col [colIndex $win $arg0 1]
    }
    return [insertCols $win $col [lrange $argList 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::insertlistSubCmd
#------------------------------------------------------------------------------
proc tablelist::insertlistSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win insertlist index list"
    }

    synchronize $win
    set index [rowIndex $win [lindex $argList 0] 1]
    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled)} {
	return ""
    }

    return [insertRows $win $index [lindex $argList 1] $data(hasListVar)]
}

#------------------------------------------------------------------------------
# tablelist::iselemsnippedSubCmd
#------------------------------------------------------------------------------
proc tablelist::iselemsnippedSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win iselemsnipped cellIndex fullTextName"
    }

    synchronize $win
    displayItems $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    set fullTextName [lindex $argList 1]
    upvar 2 $fullTextName fullText

    upvar ::tablelist::ns${win}::data data
    set item [lindex $data(itemList) $row]
    set key [lindex $item end]
    set fullText [lindex $item $col]
    if {[lindex $data(fmtCmdFlagList) $col]} {
	set fullText [formatElem $win $key $row $col $fullText]
    }
    set fullText [strToDispStr $fullText]

    set pixels [lindex $data(colList) [expr {2*$col}]]
    if {$pixels == 0} {				;# convention: dynamic width
	if {$data($col-maxPixels) > 0 &&
	    $data($col-reqPixels) > $data($col-maxPixels)} {
	    set pixels $data($col-maxPixels)
	}
    }
    if {$pixels == 0 || $data($col-wrap)} {
	return 0
    }

    set text $fullText
    getAuxData $win $key $col auxType auxWidth $pixels
    set cellFont [getCellFont $win $key $col]
    incr pixels $data($col-delta)

    if {[string match "*\n*" $text]} {
	set list [split $text "\n"]
	adjustMlElem $win list auxWidth $cellFont $pixels "r" ""
	set text [join $list "\n"]
    } else {
	adjustElem $win text auxWidth $cellFont $pixels "r" ""
    }
    return [expr {[string compare $text $fullText] != 0}]
}

#------------------------------------------------------------------------------
# tablelist::istitlesnippedSubCmd
#------------------------------------------------------------------------------
proc tablelist::istitlesnippedSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win istitlesnipped columnIndex fullTextName"
    }

    set col [colIndex $win [lindex $argList 0] 1]
    set fullTextName [lindex $argList 1]
    upvar 2 $fullTextName fullText

    upvar ::tablelist::ns${win}::data data
    set fullText [lindex $data(-columns) [expr {3*$col + 1}]]
    return $data($col-isSnipped)
}

#------------------------------------------------------------------------------
# tablelist::itemlistvarSubCmd
#------------------------------------------------------------------------------
proc tablelist::itemlistvarSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win itemlistvar"
    }

    return ::tablelist::ns${win}::data(itemList)
}

#------------------------------------------------------------------------------
# tablelist::labelpathSubCmd
#------------------------------------------------------------------------------
proc tablelist::labelpathSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win labelpath columnIndex"
    }

    set col [colIndex $win [lindex $argList 0] 1]
    upvar ::tablelist::ns${win}::data data
    return $data(hdrTxtFrLbl)$col
}

#------------------------------------------------------------------------------
# tablelist::labelsSubCmd
#------------------------------------------------------------------------------
proc tablelist::labelsSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win labels"
    }

    upvar ::tablelist::ns${win}::data data
    set labelList {}
    for {set col 0} {$col < $data(colCount)} {incr col} {
	lappend labelList $data(hdrTxtFrLbl)$col
    }
    return $labelList
}

#------------------------------------------------------------------------------
# tablelist::labeltagSubCmd
#------------------------------------------------------------------------------
proc tablelist::labeltagSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win labeltag"
    }

    upvar ::tablelist::ns${win}::data data
    return $data(labelTag)
}

#------------------------------------------------------------------------------
# tablelist::moveSubCmd
#------------------------------------------------------------------------------
proc tablelist::moveSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win move sourceIndex targetIndex"
    }

    synchronize $win
    displayItems $win
    set source [rowIndex $win [lindex $argList 0] 0]
    set target [rowIndex $win [lindex $argList 1] 1]
    return [moveRow $win $source $target]
}

#------------------------------------------------------------------------------
# tablelist::movecolumnSubCmd
#------------------------------------------------------------------------------
proc tablelist::movecolumnSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win movecolumn sourceColumnIndex\
			      targetColumnIndex"
    }

    synchronize $win
    displayItems $win
    set arg0 [lindex $argList 0]
    set source [colIndex $win $arg0 1]
    set arg1 [lindex $argList 1]
    upvar ::tablelist::ns${win}::data data
    if {[string first $arg1 "end"] == 0 || $arg1 == $data(colCount)} {
	set target $data(colCount)
    } else {
	set target [colIndex $win $arg1 1]
    }
    return [moveCol $win $source $target]
}

#------------------------------------------------------------------------------
# tablelist::nearestSubCmd
#------------------------------------------------------------------------------
proc tablelist::nearestSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win nearest y"
    }

    set y [format "%d" [lindex $argList 0]]
    synchronize $win
    displayItems $win
    return [rowIndex $win @0,$y 0]
}

#------------------------------------------------------------------------------
# tablelist::nearestcellSubCmd
#------------------------------------------------------------------------------
proc tablelist::nearestcellSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win nearestcell x y"
    }

    set x [format "%d" [lindex $argList 0]]
    set y [format "%d" [lindex $argList 1]]
    synchronize $win
    displayItems $win
    return [join [cellIndex $win @$x,$y 0] ","]
}

#------------------------------------------------------------------------------
# tablelist::nearestcolumnSubCmd
#------------------------------------------------------------------------------
proc tablelist::nearestcolumnSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win nearestcolumn x"
    }

    set x [format "%d" [lindex $argList 0]]
    return [colIndex $win @$x,0 0]
}

#------------------------------------------------------------------------------
# tablelist::rejectinputSubCmd
#------------------------------------------------------------------------------
proc tablelist::rejectinputSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win rejectinput"
    }

    upvar ::tablelist::ns${win}::data data
    set data(rejected) 1
}

#------------------------------------------------------------------------------
# tablelist::resetsortinfoSubCmd
#------------------------------------------------------------------------------
proc tablelist::resetsortinfoSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win resetsortinfo"
    }

    upvar ::tablelist::ns${win}::data data

    foreach col $data(sortColList) {
	set data($col-sortRank) 0
	set data($col-sortOrder) ""
    }

    set whichWidths {}
    foreach col $data(arrowColList) {
	lappend whichWidths l$col
    }

    set data(sortColList) {}
    set data(arrowColList) {}
    set data(sortOrder) {}

    if {[llength $whichWidths] > 0} {
	synchronize $win
	displayItems $win
	adjustColumns $win $whichWidths 1
    }
    return ""
}

#------------------------------------------------------------------------------
# tablelist::rowattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::rowattribSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win rowattrib index ?name? ?value\
			      name value ...?"
    }

    synchronize $win
    set rowSpec [lindex $argList 0]
    set row [rowIndex $win $rowSpec 0]
    upvar ::tablelist::ns${win}::data data
    if {$row < 0 || $row > $data(lastRow)} {
	return -code error "row index \"$rowSpec\" out of range"
    }
    set key [lindex [lindex $data(itemList) $row] end]
    return [mwutil::attribSubCmd $win $key [lrange $argList 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::rowcgetSubCmd
#------------------------------------------------------------------------------
proc tablelist::rowcgetSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win rowcget index option"
    }

    synchronize $win
    set rowArg [lindex $argList 0]
    set row [rowIndex $win $rowArg 0]
    upvar ::tablelist::ns${win}::data data
    if {$row < 0 || $row > $data(lastRow)} {
	return -code error "row index \"$rowArg\" out of range"
    }
    variable rowConfigSpecs
    set opt [mwutil::fullConfigOpt [lindex $argList 1] rowConfigSpecs]
    return [doRowCget $row $win $opt]
}

#------------------------------------------------------------------------------
# tablelist::rowconfigureSubCmd
#------------------------------------------------------------------------------
proc tablelist::rowconfigureSubCmd {win argList} {
    if {[llength $argList] < 1} {
	mwutil::wrongNumArgs "$win rowconfigure index ?option? ?value\
			      option value ...?"
    }

    synchronize $win
    displayItems $win
    variable rowConfigSpecs
    set rowSpec [lindex $argList 0]
    set row [rowIndex $win $rowSpec 0]
    upvar ::tablelist::ns${win}::data data
    if {$row < 0 || $row > $data(lastRow)} {
	return -code error "row index \"$rowSpec\" out of range"
    }
    return [mwutil::configureSubCmd $win rowConfigSpecs \
	    "tablelist::doRowConfig $row" "tablelist::doRowCget $row" \
	    [lrange $argList 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::scanSubCmd
#------------------------------------------------------------------------------
proc tablelist::scanSubCmd {win argList} {
    if {[llength $argList] != 3} {
	mwutil::wrongNumArgs "$win scan mark|dragto x y"
    }

    set x [format "%d" [lindex $argList 1]]
    set y [format "%d" [lindex $argList 2]]
    variable scanCmdOpts
    set opt [mwutil::fullOpt "option" [lindex $argList 0] $scanCmdOpts]
    synchronize $win
    displayItems $win
    return [doScan $win $opt $x $y]
}

#------------------------------------------------------------------------------
# tablelist::seeSubCmd
#------------------------------------------------------------------------------
proc tablelist::seeSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win see index"
    }

    synchronize $win
    displayItems $win
    set index [rowIndex $win [lindex $argList 0] 0]
    return [seeRow $win $index]
}

#------------------------------------------------------------------------------
# tablelist::seecellSubCmd
#------------------------------------------------------------------------------
proc tablelist::seecellSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win seecell cellIndex"
    }

    synchronize $win
    displayItems $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 0] {}
    if {[winfo viewable $win]} {
	return [seeCell $win $row $col]
    } else {
	after idle [list tablelist::seeCell $win $row $col]
	return ""
    }
}

#------------------------------------------------------------------------------
# tablelist::seecolumnSubCmd
#------------------------------------------------------------------------------
proc tablelist::seecolumnSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win seecolumn columnIndex"
    }

    synchronize $win
    displayItems $win
    set col [colIndex $win [lindex $argList 0] 0]
    if {[winfo viewable $win]} {
	return [seeCell $win [rowIndex $win @0,0 0] $col]
    } else {
	after idle [list tablelist::seeCell $win [rowIndex $win @0,0 0] $col]
	return ""
    }
}

#------------------------------------------------------------------------------
# tablelist::selectionSubCmd
#------------------------------------------------------------------------------
proc tablelist::selectionSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 2 || $argCount > 3} {
	mwutil::wrongNumArgs "$win selection option firstIndex lastIndex" \
			     "$win selection option indexList"
    }

    synchronize $win
    displayItems $win
    variable selCmdOpts
    set opt [mwutil::fullOpt "option" [lindex $argList 0] $selCmdOpts]
    set first [lindex $argList 1]

    switch $opt {
	anchor -
	includes {
	    if {$argCount != 2} {
		mwutil::wrongNumArgs "$win selection $opt index"
	    }
	    set index [rowIndex $win $first 0]
	    return [rowSelection $win $opt $index $index]
	}

	clear -
	set {
	    if {$argCount == 2} {
		foreach elem $first {
		    set index [rowIndex $win $elem 0]
		    rowSelection $win $opt $index $index
		}
		return ""
	    } else {
		set first [rowIndex $win $first 0]
		set last [rowIndex $win [lindex $argList 2] 0]
		return [rowSelection $win $opt $first $last]
	    }
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::separatorpathSubCmd
#------------------------------------------------------------------------------
proc tablelist::separatorpathSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount > 1} {
	mwutil::wrongNumArgs "$win separatorpath ?columnIndex?"
    }

    upvar ::tablelist::ns${win}::data data
    if {$argCount == 0} {
	if {[winfo exists $data(sep)]} {
	    return $data(sep)
	} else {
	    return ""
	}
    } else {
	set col [colIndex $win [lindex $argList 0] 1]
	if {$data(-showseparators)} {
	    return $data(sep)$col
	} else {
	    return ""
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::separatorsSubCmd
#------------------------------------------------------------------------------
proc tablelist::separatorsSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win separators"
    }

    set sepList {}
    foreach w [winfo children $win] {
	if {[regexp {^sep([0-9]+)?$} [winfo name $w]]} {
	    lappend sepList $w
	}
    }
    return [lsort -dictionary $sepList]
}

#------------------------------------------------------------------------------
# tablelist::sizeSubCmd
#------------------------------------------------------------------------------
proc tablelist::sizeSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win size"
    }

    synchronize $win
    upvar ::tablelist::ns${win}::data data
    return $data(itemCount)
}

#------------------------------------------------------------------------------
# tablelist::sortSubCmd
#------------------------------------------------------------------------------
proc tablelist::sortSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount > 1} {
	mwutil::wrongNumArgs "$win sort ?-increasing|-decreasing?"
    }

    if {$argCount == 0} {
	set order -increasing
    } else {
	variable _sortOrders
	set order [mwutil::fullOpt "option" [lindex $argList 0] $_sortOrders]
    }
    synchronize $win
    displayItems $win
    return [sortItems $win -1 [string range $order 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::sortbycolumnSubCmd
#------------------------------------------------------------------------------
proc tablelist::sortbycolumnSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs "$win sortbycolumn columnIndex\
			      ?-increasing|-decreasing?"
    }

    synchronize $win
    displayItems $win
    set col [colIndex $win [lindex $argList 0] 1]
    if {$argCount == 1} {
	set order -increasing
    } else {
	variable _sortOrders
	set order [mwutil::fullOpt "option" [lindex $argList 1] $_sortOrders]
    }
    return [sortItems $win $col [string range $order 1 end]]
}

#------------------------------------------------------------------------------
# tablelist::sortbycolumnlistSubCmd
#------------------------------------------------------------------------------
proc tablelist::sortbycolumnlistSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs "$win sortbycolumnlist columnIndexList\
	                      ?sortOrderList?"
    }

    synchronize $win
    displayItems $win
    set sortColList {}
    foreach elem [lindex $argList 0] {
	set col [colIndex $win $elem 1]
	if {[lsearch -exact $sortColList $col] >= 0} {
	    return -code error "duplicate column index \"$elem\""
	}
	lappend sortColList $col
    }
    set sortOrderList {}
    if {$argCount == 2} {
	variable sortOrders
	foreach elem [lindex $argList 1] {
	    lappend sortOrderList [mwutil::fullOpt "option" $elem $sortOrders]
	}
    }
    return [sortItems $win $sortColList $sortOrderList]
}

#------------------------------------------------------------------------------
# tablelist::sortcolumnSubCmd
#------------------------------------------------------------------------------
proc tablelist::sortcolumnSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win sortcolumn"
    }

    upvar ::tablelist::ns${win}::data data
    if {[llength $data(sortColList)] == 0} {
	return -1
    } else {
	return [lindex $data(sortColList) 0]
    }
}

#------------------------------------------------------------------------------
# tablelist::sortcolumnlistSubCmd
#------------------------------------------------------------------------------
proc tablelist::sortcolumnlistSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win sortcolumnlist"
    }

    upvar ::tablelist::ns${win}::data data
    return $data(sortColList)
}

#------------------------------------------------------------------------------
# tablelist::sortorderSubCmd
#------------------------------------------------------------------------------
proc tablelist::sortorderSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win sortorder"
    }

    upvar ::tablelist::ns${win}::data data
    if {[llength $data(sortColList)] == 0} {
	return $data(sortOrder)
    } else {
	set col [lindex $data(sortColList) 0]
	return $data($col-sortOrder)
    }
}

#------------------------------------------------------------------------------
# tablelist::sortorderlistSubCmd
#------------------------------------------------------------------------------
proc tablelist::sortorderlistSubCmd {win argList} {
    if {[llength $argList] != 0} {
	mwutil::wrongNumArgs "$win sortorderlist"
    }

    upvar ::tablelist::ns${win}::data data
    set sortOrderList {}
    foreach col $data(sortColList) {
	lappend sortOrderList $data($col-sortOrder)
    }
    return $sortOrderList
}

#------------------------------------------------------------------------------
# tablelist::togglecolumnhideSubCmd
#------------------------------------------------------------------------------
proc tablelist::togglecolumnhideSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs \
		"$win togglecolumnhide firstColumnIndex lastColumnIndex" \
		"$win togglecolumnhide columnIndexList"
    }

    synchronize $win
    displayItems $win
    set first [lindex $argList 0]

    #
    # Toggle the value of the -hide option of the specified columns
    #
    variable canElide
    if {!$canElide} {
	set selCells [curCellSelection $win]
    }
    upvar ::tablelist::ns${win}::data data
    set colIdxList {}
    if {$argCount == 1} {
	foreach elem $first {
	    set col [colIndex $win $elem 1]
	    if {$canElide && !$data($col-hide)} {
		cellSelection $win clear 0 $col $data(lastRow) $col
	    }
	    set data($col-hide) [expr {!$data($col-hide)}]
	    if {$data($col-hide)} {
		incr data(hiddenColCount)
		if {$col == $data(editCol)} {
		    doCancelEditing $win
		}
	    } else {
		incr data(hiddenColCount) -1
	    }
	    lappend colIdxList $col
	}
    } else {
	set first [colIndex $win $first 1]
	set last [colIndex $win [lindex $argList 1] 1]

	for {set col $first} {$col <= $last} {incr col} {
	    if {$canElide && !$data($col-hide)} {
		cellSelection $win clear 0 $col $data(lastRow) $col
	    }
	    set data($col-hide) [expr {!$data($col-hide)}]
	    if {$data($col-hide)} {
		incr data(hiddenColCount)
		if {$col == $data(editCol)} {
		    doCancelEditing $win
		}
	    } else {
		incr data(hiddenColCount) -1
	    }
	    lappend colIdxList $col
	}
    }

    if {[llength $colIdxList] == 0} {
	return ""
    }

    #
    # Adjust the columns and redisplay the items
    #
    makeColFontAndTagLists $win
    adjustColumns $win $colIdxList 1
    adjustColIndex $win data(anchorCol) 1
    adjustColIndex $win data(activeCol) 1
    if {$canElide} {
	adjustElidedTextWhenIdle $win
    } else {
	redisplay $win 0 $selCells
    }
    if {[string compare $data(-selecttype) "row"] == 0} {
	foreach row [curSelection $win] {
	    rowSelection $win set $row $row
	}
    }

    event generate $win <<TablelistColHiddenStateChanged>>
    return ""
}

#------------------------------------------------------------------------------
# tablelist::togglerowhideSubCmd
#------------------------------------------------------------------------------
proc tablelist::togglerowhideSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount < 1 || $argCount > 2} {
	mwutil::wrongNumArgs "$win togglerowhide firstIndex lastIndex" \
			     "$win togglerowhide indexList"
    }

    synchronize $win
    displayItems $win
    set first [lindex $argList 0]

    #
    # Toggle the value of the -hide option of the specified rows
    #
    upvar ::tablelist::ns${win}::data data
    set count 0
    if {$argCount == 1} {
	foreach elem $first {
	    set row [rowIndex $win $elem 0]
	    if {$row < 0 || $row > $data(lastRow)} {
		return -code error "row index \"$elem\" out of range"
	    }

	    doRowConfig $row $win -hide [expr {![doRowCget $row $win -hide]}]
	    incr count
	}
    } else {
	set firstRow [rowIndex $win $first 0]
	if {$firstRow < 0 || $firstRow > $data(lastRow)} {
	    return -code error "row index \"$first\" out of range"
	}

	set lastRow [rowIndex $win [lindex $argList 1] 0]
	if {$lastRow < 0 || $lastRow > $data(lastRow)} {
	    return -code error "row index \"$last\" out of range"
	}

	for {set row $firstRow} {$row <= $lastRow} {incr row} {
	    doRowConfig $row $win -hide [expr {![doRowCget $row $win -hide]}]
	    incr count
	}
    }

    if {$count != 0} {
	event generate $win <<TablelistRowHiddenStateChanged>>
    }
    return ""
}

#------------------------------------------------------------------------------
# tablelist::unsetattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::unsetattribSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win unsetattrib name"
    }

    return [mwutil::unsetattribSubCmd $win "widget" [lindex $argList 0]]
}

#------------------------------------------------------------------------------
# tablelist::unsetcellattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::unsetcellattribSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win unsetcellattrib cellIndex name"
    }

    synchronize $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    upvar ::tablelist::ns${win}::data data
    set key [lindex [lindex $data(itemList) $row] end]
    return [mwutil::unsetattribSubCmd $win $key,$col [lindex $argList 1]]
}

#------------------------------------------------------------------------------
# tablelist::unsetcolumnattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::unsetcolumnattribSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win unsetcolumnattrib columnIndex name"
    }

    set col [colIndex $win [lindex $argList 0] 1]
    return [mwutil::unsetattribSubCmd $win $col [lindex $argList 1]]
}

#------------------------------------------------------------------------------
# tablelist::unsetrowattribSubCmd
#------------------------------------------------------------------------------
proc tablelist::unsetrowattribSubCmd {win argList} {
    if {[llength $argList] != 2} {
	mwutil::wrongNumArgs "$win unsetrowattrib index name"
    }

    synchronize $win
    set rowSpec [lindex $argList 0]
    set row [rowIndex $win $rowSpec 0]
    upvar ::tablelist::ns${win}::data data
    if {$row < 0 || $row > $data(lastRow)} {
	return -code error "row index \"$rowSpec\" out of range"
    }
    set key [lindex [lindex $data(itemList) $row] end]
    return [mwutil::unsetattribSubCmd $win $key [lindex $argList 1]]
}

#------------------------------------------------------------------------------
# tablelist::windowpathSubCmd
#------------------------------------------------------------------------------
proc tablelist::windowpathSubCmd {win argList} {
    if {[llength $argList] != 1} {
	mwutil::wrongNumArgs "$win windowpath cellIndex"
    }

    synchronize $win
    foreach {row col} [cellIndex $win [lindex $argList 0] 1] {}
    upvar ::tablelist::ns${win}::data data
    set key [lindex [lindex $data(itemList) $row] end]
    set w $data(body).f$key,$col.w
    if {[winfo exists $w]} {
	return $w
    } else {
	return ""
    }
}

#------------------------------------------------------------------------------
# tablelist::xviewSubCmd
#------------------------------------------------------------------------------
proc tablelist::xviewSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount != 1 || [lindex $argList 0] != 0} {
	synchronize $win
	displayItems $win
    }
    upvar ::tablelist::ns${win}::data data

    switch $argCount {
	0 {
	    #
	    # Command: $win xview
	    #
	    if {$data(-titlecolumns) == 0} {
		return [$data(hdrTxt) xview]
	    } else {
		set scrlWindowWidth [getScrlWindowWidth $win]
		if {$scrlWindowWidth <= 0} {
		    return [list 0 0]
		}

		set scrlContentWidth [getScrlContentWidth $win 0 $data(lastCol)]
		if {$scrlContentWidth == 0} {
		    return [list 0 1]
		}

		set scrlXOffset \
		    [scrlColOffsetToXOffset $win $data(scrlColOffset)]
		set fraction1 [expr {$scrlXOffset/double($scrlContentWidth)}]
		set fraction2 [expr {($scrlXOffset + $scrlWindowWidth)/
				     double($scrlContentWidth)}]
		if {$fraction2 > 1.0} {
		    set fraction2 1.0
		}
		return [list [format "%g" $fraction1] [format "%g" $fraction2]]
	    }
	}

	1 {
	    #
	    # Command: $win xview <units>
	    #
	    set units [format "%d" [lindex $argList 0]]
	    if {$data(-titlecolumns) == 0} {
		foreach w [list $data(hdrTxt) $data(body)] {
		    $w xview moveto 0
		    $w xview scroll $units units
		}
	    } else {
		changeScrlColOffset $win $units
		updateColorsWhenIdle $win
	    }
	    return ""
	}

	default {
	    #
	    # Command: $win xview moveto <fraction>
	    #	       $win xview scroll <number> units|pages
	    #
	    set argList [mwutil::getScrollInfo $argList]
	    if {$data(-titlecolumns) == 0} {
		foreach w [list $data(hdrTxt) $data(body)] {
		    eval [list $w xview] $argList
		}
	    } else {
		if {[string compare [lindex $argList 0] "moveto"] == 0} {
		    #
		    # Compute the new scrolled column offset
		    #
		    set fraction [lindex $argList 1]
		    set scrlContentWidth \
			[getScrlContentWidth $win 0 $data(lastCol)]
		    set pixels [expr {int($fraction*$scrlContentWidth + 0.5)}]
		    set scrlColOffset [scrlXOffsetToColOffset $win $pixels]

		    #
		    # Increase the new scrolled column offset if necessary
		    #
		    if {$pixels + [getScrlWindowWidth $win] >=
			$scrlContentWidth} {
			incr scrlColOffset
		    }

		    changeScrlColOffset $win $scrlColOffset
		} else {
		    set number [lindex $argList 1]
		    if {[string compare [lindex $argList 2] "units"] == 0} {
			changeScrlColOffset $win \
			    [expr {$data(scrlColOffset) + $number}]
		    } else {
			#
			# Compute the new scrolled column offset
			#
			set scrlXOffset \
			    [scrlColOffsetToXOffset $win $data(scrlColOffset)]
			set scrlWindowWidth [getScrlWindowWidth $win]
			set deltaPixels [expr {$number*$scrlWindowWidth}]
			set pixels [expr {$scrlXOffset + $deltaPixels}]
			set scrlColOffset [scrlXOffsetToColOffset $win $pixels]

			#
			# Adjust the new scrolled column offset if necessary
			#
			if {$number < 0 &&
			    [getScrlContentWidth $win $scrlColOffset \
			     $data(lastCol)] -
			    [getScrlContentWidth $win $data(scrlColOffset) \
			     $data(lastCol)] > -$deltaPixels} {
			    incr scrlColOffset
			}
			if {$scrlColOffset == $data(scrlColOffset)} {
			    if {$number < 0} {
				incr scrlColOffset -1
			    } elseif {$number > 0} {
				incr scrlColOffset
			    }
			}

			changeScrlColOffset $win $scrlColOffset
		    }
		}
		updateColorsWhenIdle $win
	    }
	    variable winSys
	    if {[string compare $winSys "aqua"] == 0 && [winfo viewable $win]} {
		#
		# Work around a Tk bug on Mac OS X Aqua
		#
		if {[winfo exists $data(bodyFr)]} {
		    lower $data(bodyFr)
		    raise $data(bodyFr)
		}
	    }
	    return ""
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::yviewSubCmd
#------------------------------------------------------------------------------
proc tablelist::yviewSubCmd {win argList} {
    set argCount [llength $argList]
    if {$argCount != 1 || [lindex $argList 0] != 0} {
	synchronize $win
	displayItems $win
    }
    upvar ::tablelist::ns${win}::data data
    set w $data(body)

    switch $argCount {
	0 {
	    #
	    # Command: $win yview
	    #
	    set totalNonHiddenCount \
		[expr {$data(itemCount) - $data(hiddenRowCount)}]
	    if {$totalNonHiddenCount == 0} {
		return [list 0 1]
	    }
	    set btmY [expr {[winfo height $w] - 1}]
	    set topTextIdx [$w index @0,0]
	    set btmTextIdx [$w index @0,$btmY]
	    set topRow [expr {int($topTextIdx) - 1}]
	    set btmRow [expr {int($btmTextIdx) - 1}]
	    foreach {x y width height baselinePos} [$w dlineinfo $topTextIdx] {}
	    if {$y < 0} {
		incr topRow	;# top row incomplete in vertical direction
	    }
	    foreach {x y width height baselinePos} [$w dlineinfo $btmTextIdx] {}
	    set y2 [expr {$y + $height}]
	    if {[string compare [$w index @0,$y] [$w index @0,$y2]] == 0} {
		incr btmRow -1	;# btm row incomplete in vertical direction
	    }
	    set upperNonHiddenCount \
		[getNonHiddenRowCount $win 0 [expr {$topRow - 1}]]
	    set winNonHiddenCount [getNonHiddenRowCount $win $topRow $btmRow]
	    set fraction1 [expr {$upperNonHiddenCount/
				 double($totalNonHiddenCount)}]
	    set fraction2 [expr {($upperNonHiddenCount + $winNonHiddenCount)/
				 double($totalNonHiddenCount)}]
	    return [list [format "%g" $fraction1] [format "%g" $fraction2]]
	}

	1 {
	    #
	    # Command: $win yview <units>
	    #
	    set units [format "%d" [lindex $argList 0]]
	    $w yview [nonHiddenRowOffsetToRowIndex $win $units]
	    adjustElidedText $win
	    updateColorsWhenIdle $win
	    adjustSepsWhenIdle $win
	    updateVScrlbarWhenIdle $win
	    return ""
	}

	default {
	    #
	    # Command: $win yview moveto <fraction>
	    #	       $win yview scroll <number> units|pages
	    #
	    set argList [mwutil::getScrollInfo $argList]
	    if {[string compare [lindex $argList 0] "moveto"] == 0} {
		set fraction [lindex $argList 1]
		set totalNonHiddenCount \
		    [expr {$data(itemCount) - $data(hiddenRowCount)}]
		set offset [expr {int($fraction*$totalNonHiddenCount + 0.5)}]
		$w yview [nonHiddenRowOffsetToRowIndex $win $offset]
	    } else {
		set number [lindex $argList 1]
		if {[string compare [lindex $argList 2] "units"] == 0} {
		    set topRow [expr {int([$w index @0,0]) - 1}]
		    set upperNonHiddenCount \
			[getNonHiddenRowCount $win 0 [expr {$topRow - 1}]]
		    set offset [expr {$upperNonHiddenCount + $number}]
		    $w yview [nonHiddenRowOffsetToRowIndex $win $offset]
		} else {
		    set absNumber [expr {abs($number)}]
		    set btmY [expr {[winfo height $w] - 1}]
		    for {set n 0} {$n < $absNumber} {incr n} {
			set topRow [expr {int([$w index @0,0]) - 1}]
			set btmRow [expr {int([$w index @0,$btmY]) - 1}]
			set upperNonHiddenCount \
			    [getNonHiddenRowCount $win 0 [expr {$topRow - 1}]]
			set winNonHiddenCount \
			    [getNonHiddenRowCount $win $topRow $btmRow]
			set delta [expr {$winNonHiddenCount - 2}]
			if {$number < 0} {
			    set delta [expr {(-1)*$delta}]
			}
			set offset [expr {$upperNonHiddenCount + $delta}]
			$w yview [nonHiddenRowOffsetToRowIndex $win $offset]
		    }
		}
	    }
	    adjustElidedText $win
	    updateColorsWhenIdle $win
	    adjustSepsWhenIdle $win
	    updateVScrlbarWhenIdle $win
	    variable winSys
	    if {[string compare $winSys "aqua"] == 0 && [winfo viewable $win]} {
		#
		# Work around a Tk bug on Mac OS X Aqua
		#
		if {[winfo exists $data(bodyFr)]} {
		    lower $data(bodyFr)
		    raise $data(bodyFr)
		}
	    }
	    return ""
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::cellSelection
#
# Processes the tablelist cellselection subcommand.
#------------------------------------------------------------------------------
proc tablelist::cellSelection {win opt firstRow firstCol lastRow lastCol} {
    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled) && [string compare $opt "includes"] != 0} {
	return ""
    }

    switch $opt {
	anchor {
	    #
	    # Adjust the row and column indices to fit
	    # within the existing non-hidden elements
	    #
	    adjustRowIndex $win firstRow 1
	    adjustColIndex $win firstCol 1

	    set data(anchorRow) $firstRow
	    set data(anchorCol) $firstCol
	    return ""
	}

	clear {
	    #
	    # Adjust the row and column indices
	    # to fit within the existing elements
	    #
	    if {$data(itemCount) == 0 || $data(colCount) == 0} {
		return ""
	    }
	    adjustRowIndex $win firstRow
	    adjustColIndex $win firstCol
	    adjustRowIndex $win lastRow
	    adjustColIndex $win lastCol

	    #
	    # Swap the indices if necessary
	    #
	    if {$lastRow < $firstRow} {
		set tmp $firstRow
		set firstRow $lastRow
		set lastRow $tmp
	    }
	    if {$lastCol < $firstCol} {
		set tmp $firstCol
		set firstCol $lastCol
		set lastCol $tmp
	    }

	    #
	    # Shrink the column range to be delimited by non-hidden columns
	    #
	    while {$firstCol <= $lastCol && $data($firstCol-hide)} {
		incr firstCol
	    }
	    if {$firstCol > $lastCol} {
		return ""
	    }
	    while {$lastCol >= $firstCol && $data($lastCol-hide)} {
		incr lastCol -1
	    }

	    set firstTextIdx [expr {$firstRow + 1}].0
	    set lastTextIdx [expr {$lastRow + 1}].end

	    #
	    # Find the (partly) selected lines of the body text
	    # widget in the text range specified by the two indices
	    #
	    set w $data(body)
	    variable canElide
	    variable elide
	    set selRange [$w tag nextrange select $firstTextIdx $lastTextIdx]
	    while {[llength $selRange] != 0} {
		set selStart [lindex $selRange 0]
		set line [expr {int($selStart)}]
		set row [expr {$line - 1}]
		set key [lindex [lindex $data(itemList) $row] end]

		#
		# Deselect the relevant elements of the row and handle
		# the -(select)background and -(select)foreground
		# cell and column configuration options for them
		#
		findTabs $win $line $firstCol $lastCol firstTabIdx lastTabIdx
		set textIdx1 $firstTabIdx
		for {set col $firstCol} {$col <= $lastCol} {incr col} {
		    if {$data($col-hide) && !$canElide} {
			continue
		    }

		    set textIdx2 \
			[$w search $elide "\t" $textIdx1+1c $lastTabIdx+1c]+1c
		    $w tag remove select $textIdx1 $textIdx2
		    foreach optTail {background foreground} {
			set opt -select$optTail
			foreach name  [list $col$opt $key$opt $key,$col$opt] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				$w tag remove $level$opt-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
			foreach name  [list $col-$optTail $key-$optTail \
				       $key,$col-$optTail] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				$w tag add $level-$optTail-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
		    }
		    set textIdx1 $textIdx2
		}

		set selRange \
		    [$w tag nextrange select "$selStart lineend" $lastTextIdx]
	    }

	    updateColorsWhenIdle $win
	    return ""
	}

	includes {
	    variable canElide
	    if {$firstRow < 0 || $firstRow > $data(lastRow) || \
		$firstCol < 0 || $firstCol > $data(lastCol) ||
		($data($firstCol-hide) && !$canElide)} {
		return 0
	    }

	    findTabs $win [expr {$firstRow + 1}] $firstCol $firstCol \
		     tabIdx1 tabIdx2
	    if {[lsearch -exact [$data(body) tag names $tabIdx1] select] < 0} {
		return 0
	    } else {
		return 1
	    }
	}

	set {
	    #
	    # Adjust the row and column indices
	    # to fit within the existing elements
	    #
	    if {$data(itemCount) == 0 || $data(colCount) == 0} {
		return ""
	    }
	    adjustRowIndex $win firstRow
	    adjustColIndex $win firstCol
	    adjustRowIndex $win lastRow
	    adjustColIndex $win lastCol

	    #
	    # Swap the indices if necessary
	    #
	    if {$lastRow < $firstRow} {
		set tmp $firstRow
		set firstRow $lastRow
		set lastRow $tmp
	    }
	    if {$lastCol < $firstCol} {
		set tmp $firstCol
		set firstCol $lastCol
		set lastCol $tmp
	    }

	    #
	    # Shrink the column range to be delimited by non-hidden columns
	    #
	    while {$firstCol <= $lastCol && $data($firstCol-hide)} {
		incr firstCol
	    }
	    if {$firstCol > $lastCol} {
		return ""
	    }
	    while {$lastCol >= $firstCol && $data($lastCol-hide)} {
		incr lastCol -1
	    }

	    set w $data(body)
	    variable canElide
	    variable elide
	    for {set row $firstRow; set line [expr {$firstRow + 1}]} \
		{$row <= $lastRow} {set row $line; incr line} {
		#
		# Check whether the row is selectable and non-hidden
		#
		set key [lindex [lindex $data(itemList) $row] end]
		if {[info exists data($key-selectable)] ||
		    [info exists data($key-hide)]} {
		    continue
		}

		#
		# Select the relevant non-hidden elements of the row and
		# handle the -(select)background and -(select)foreground
		# cell and column configuration options for them
		#
		findTabs $win $line $firstCol $lastCol firstTabIdx lastTabIdx
		set textIdx1 $firstTabIdx
		for {set col $firstCol} {$col <= $lastCol} {incr col} {
		    if {$data($col-hide) && !$canElide} {
			continue
		    }

		    set textIdx2 \
			[$w search $elide "\t" $textIdx1+1c $lastTabIdx+1c]+1c
		    if {$data($col-hide)} {
			set textIdx1 $textIdx2
			continue
		    }

		    $w tag add select $textIdx1 $textIdx2
		    foreach optTail {background foreground} {
			set opt -select$optTail
			foreach name  [list $col$opt $key$opt $key,$col$opt] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				$w tag add $level$opt-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
			foreach name  [list $col-$optTail $key-$optTail \
				       $key,$col-$optTail] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				set tag $level-$optTail-$data($name)
				$w tag remove $level-$optTail-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
		    }
		    set textIdx1 $textIdx2
		}
	    }

	    #
	    # If the selection is exported and there are any selected
	    # cells in the widget then make win the new owner of the
	    # PRIMARY selection and register a callback to be invoked
	    # when it loses ownership of the PRIMARY selection
	    #
	    if {$data(-exportselection) &&
		[llength [$w tag nextrange select 1.0]] != 0} {
		selection own -command \
			[list ::tablelist::lostSelection $win] $win
	    }

	    updateColorsWhenIdle $win
	    return ""
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::colWidth
#
# Processes the tablelist columnwidth subcommand.
#------------------------------------------------------------------------------
proc tablelist::colWidth {win col opt} {
    upvar ::tablelist::ns${win}::data data
    set pixels [lindex $data(colList) [expr {2*$col}]]
    if {$pixels == 0} {				;# convention: dynamic width
	set pixels $data($col-reqPixels)
	if {$data($col-maxPixels) > 0} {
	    if {$pixels > $data($col-maxPixels)} {
		set pixels $data($col-maxPixels)
	    }
	}
    }

    switch -- $opt {
	-requested { return $pixels }
	-stretched { return [expr {$pixels + $data($col-delta)}] }
	-total {
	    return [expr {$pixels + $data($col-delta) + 2*$data(charWidth)}]
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::containingRow
#
# Processes the tablelist containing subcommand.
#------------------------------------------------------------------------------
proc tablelist::containingRow {win y} {
    upvar ::tablelist::ns${win}::data data
    if {$data(itemCount) == 0} {
	return -1
    }

    set row [rowIndex $win @0,$y 0]
    set w $data(body)
    incr y -[winfo y $w]
    if {$y < 0} {
	return -1
    }

    set dlineinfo [$w dlineinfo [expr {double($row + 1)}]]
    if {$y < [lindex $dlineinfo 1] + [lindex $dlineinfo 3]} {
	return $row
    } else {
	return -1
    }
}

#------------------------------------------------------------------------------
# tablelist::containingCol
#
# Processes the tablelist containingcolumn subcommand.
#------------------------------------------------------------------------------
proc tablelist::containingCol {win x} {
    upvar ::tablelist::ns${win}::data data
    if {$x < [winfo x $data(body)]} {
	return -1
    }

    set col [colIndex $win @$x,0 0]
    if {$col < 0} {
	return -1
    }

    set lbl $data(hdrTxtFrLbl)$col
    if {$x + [winfo rootx $win] < [winfo width $lbl] + [winfo rootx $lbl]} {
	return $col
    } else {
	return -1
    }
}

#------------------------------------------------------------------------------
# tablelist::curCellSelection
#
# Processes the tablelist curcellselection subcommand.
#------------------------------------------------------------------------------
proc tablelist::curCellSelection {win {getKeys 0}} {
    variable canElide
    variable elide
    upvar ::tablelist::ns${win}::data data

    #
    # Find the (partly) selected lines of the body text widget
    #
    set result {}
    set w $data(body)
    set selRange [$w tag nextrange select 1.0]
    while {[llength $selRange] != 0} {
	foreach {selStart selEnd} $selRange {}
	set line [expr {int($selStart)}]
	set row [expr {$line - 1}]

	#
	# Get the index of the column starting at the text position selStart
	#
	set textIdx $line.0
	for {set col 0} {$col < $data(colCount)} {incr col} {
	    if {!$data($col-hide) || $canElide} {
		if {[$w compare $textIdx == $selStart]} {
		    set firstCol $col
		    break
		} else {
		    set textIdx [$w search $elide "\t" $textIdx+1c $selEnd]+1c
		}
	    }
	}

	#
	# Process the columns, starting at the found one
	# and ending just before the text position selEnd
	#
	if {$getKeys} {
	    set key [lindex [lindex $data(itemList) $row] end]
	}
	set textIdx [$w search $elide "\t" $textIdx+1c $selEnd]+1c
	for {set col $firstCol} {$col < $data(colCount)} {incr col} {
	    if {!$data($col-hide) || $canElide} {
		if {$getKeys} {
		    lappend result $key $col
		} else {
		    lappend result $row,$col
		}
		if {[$w compare $textIdx == $selEnd]} {
		    break
		} else {
		    set textIdx [$w search $elide "\t" $textIdx+1c $selEnd]+1c
		}
	    }
	}

	set selRange [$w tag nextrange select $selEnd]
    }
    return $result
}

#------------------------------------------------------------------------------
# tablelist::curSelection
#
# Processes the tablelist curselection subcommand.
#------------------------------------------------------------------------------
proc tablelist::curSelection win {
    #
    # Find the (partly) selected lines of the body text widget
    #
    set result {}
    upvar ::tablelist::ns${win}::data data
    set w $data(body)
    set selRange [$w tag nextrange select 1.0]
    while {[llength $selRange] != 0} {
	set selStart [lindex $selRange 0]
	lappend result [expr {int($selStart) - 1}]

	set selRange [$w tag nextrange select "$selStart lineend"]
    }
    return $result
}

#------------------------------------------------------------------------------
# tablelist::deleteRows
#
# Processes the tablelist delete subcommand.
#------------------------------------------------------------------------------
proc tablelist::deleteRows {win first last updateListVar} {
    #
    # Adjust the range to fit within the existing items
    #
    if {$first < 0} {
	set first 0
    }
    upvar ::tablelist::ns${win}::data data \
	  ::tablelist::ns${win}::attribs attribs
    if {$last > $data(lastRow)} {
	set last $data(lastRow)
    }
    set count [expr {$last - $first + 1}]
    if {$count <= 0} {
	return ""
    }

    #
    # Check whether the width of any dynamic-width
    # column might be affected by the deletion
    #
    set w $data(body)
    set itemListRange [lrange $data(itemList) $first $last]
    if {$count == $data(itemCount)} {
	set colWidthsChanged 1				;# just to save time
	set data(seqNum) -1
	set data(freeKeyList) {}
    } else {
	variable canElide
	set colWidthsChanged 0
	set snipStr $data(-snipstring)
	set row 0
	foreach item $itemListRange {
	    #
	    # Format the item
	    #
	    set key [lindex $item end]
	    set dispItem [lrange $item 0 $data(lastCol)]
	    if {$data(hasFmtCmds)} {
		set dispItem [formatItem $win $key $row $dispItem]
	    }

	    set col 0
	    foreach text [strToDispStr $dispItem] \
		    {pixels alignment} $data(colList) {
		if {($data($col-hide) && !$canElide) || $pixels != 0} {
		    incr col
		    continue
		}

		getAuxData $win $key $col auxType auxWidth
		set cellFont [getCellFont $win $key $col]
		set elemWidth [getElemWidth $win $text $auxWidth $cellFont]
		if {$elemWidth == $data($col-elemWidth) &&
		    [incr data($col-widestCount) -1] == 0} {
		    set colWidthsChanged 1
		    break
		}

		incr col
	    }

	    if {$colWidthsChanged} {
		break
	    }

	    incr row
	}
    }

    #
    # Delete the given items from the body text widget.  Interestingly,
    # for a large number of items it is much more efficient to delete
    # each line individually than to invoke a global delete command.
    #
    set textIdx1 [expr {double($first + 1)}]
    set textIdx2 [expr {double($first + 2)}]
    foreach item $itemListRange {
	$w delete $textIdx1 $textIdx2

	set key [lindex $item end]
	if {$count != $data(itemCount)} {
	    lappend data(freeKeyList) $key
	}

	foreach opt {-background -foreground -font} {
	    if {[info exists data($key$opt)]} {
		unset data($key$opt)
		incr data(rowTagRefCount) -1
	    }
	}
	if {[info exists data($key-hide)]} {
	    unset data($key-hide)
	    incr data(hiddenRowCount) -1
	}
	foreach opt {-name -selectable -selectbackground -selectforeground} {
	    if {[info exists data($key$opt)]} {
		unset data($key$opt)
	    }
	}

	foreach name [array names attribs $key-*] {
	    unset attribs($name)
	}

	for {set col 0} {$col < $data(colCount)} {incr col} {
	    foreach opt {-background -foreground -font} {
		if {[info exists data($key,$col$opt)]} {
		    unset data($key,$col$opt)
		    incr data(cellTagRefCount) -1
		}
	    }
	    foreach opt {-editable -editwindow -selectbackground
			 -selectforeground -windowdestroy} {
		if {[info exists data($key,$col$opt)]} {
		    unset data($key,$col$opt)
		}
	    }
	    if {[info exists data($key,$col-image)]} {
		unset data($key,$col-image)
		incr data(imgCount) -1
	    }
	    if {[info exists data($key,$col-window)]} {
		unset data($key,$col-window)
		unset data($key,$col-reqWidth)
		unset data($key,$col-reqHeight)
		incr data(winCount) -1
	    }
	}

	foreach name [array names attribs $key,*-*] {
	    unset attribs($name)
	}
    }

    #
    # Delete the given items from the internal list
    #
    set data(itemList) [lreplace $data(itemList) $first $last]
    incr data(itemCount) -$count
    incr data(lastRow) -$count

    #
    # Delete the given items from the list variable if needed
    #
    if {$updateListVar} {
	upvar #0 $data(-listvariable) var
	trace vdelete var wu $data(listVarTraceCmd)
	set var [lreplace $var $first $last]
	trace variable var wu $data(listVarTraceCmd)
    }

    #
    # Update the indices anchorRow and activeRow
    #
    if {$first <= $data(anchorRow)} {
	incr data(anchorRow) -$count
	if {$data(anchorRow) < $first} {
	    set data(anchorRow) $first
	}
	adjustRowIndex $win data(anchorRow) 1
    }
    if {$last < $data(activeRow)} {
	set activeRow $data(activeRow)
	incr activeRow -$count
	adjustRowIndex $win activeRow 1
	set data(activeRow) $activeRow
    } elseif {$first <= $data(activeRow)} {
	set activeRow $first
	adjustRowIndex $win activeRow 1
	set data(activeRow) $activeRow
    }

    #
    # Update data(editRow) if the edit window is present
    #
    if {$data(editRow) >= 0} {
	set data(editRow) [lsearch $data(itemList) "* $data(editKey)"]
    }

    #
    # Adjust the heights of the body text widget
    # and of the listbox child, if necessary
    #
    if {$data(-height) <= 0} {
	set nonHiddenRowCount [expr {$data(itemCount) - $data(hiddenRowCount)}]
	$w configure -height $nonHiddenRowCount
	$data(lb) configure -height $nonHiddenRowCount
    }

    #
    # Invalidate the list of the row indices indicating the
    # non-hidden rows, adjust the columns if necessary, and
    # schedule some operations for execution at idle time
    #
    set data(nonHiddenRowList) {-1}
    if {$colWidthsChanged} {
	adjustColumns $win allCols 1
    }
    adjustElidedTextWhenIdle $win
    makeStripesWhenIdle $win
    adjustSepsWhenIdle $win
    updateVScrlbarWhenIdle $win
    showLineNumbersWhenIdle $win

    return ""
}

#------------------------------------------------------------------------------
# tablelist::deleteCols
#
# Processes the tablelist deletecolumns subcommand.
#------------------------------------------------------------------------------
proc tablelist::deleteCols {win first last selCellsName} {
    upvar ::tablelist::ns${win}::data data \
	  ::tablelist::ns${win}::attribs attribs $selCellsName selCells

    #
    # Delete the data and attributes corresponding to the given range
    #
    for {set col $first} {$col <= $last} {incr col} {
	if {$data($col-hide)} {
	    incr data(hiddenColCount) -1
	}
	deleteColData $win $col
	deleteColAttribs $win $col
	set selCells [deleteColFromCellList $selCells $col]
    }

    #
    # Shift the elements of data and attribs corresponding to the
    # column indices > last to the left by last - first + 1 positions
    #
    for {set oldCol [expr {$last + 1}]; set newCol $first} \
	{$oldCol < $data(colCount)} {incr oldCol; incr newCol} {
	moveColData data data imgs $oldCol $newCol
	moveColAttribs attribs attribs $oldCol $newCol
	set selCells [replaceColInCellList $selCells $oldCol $newCol]
    }

    #
    # Update the item list
    #
    set newItemList {}
    foreach item $data(itemList) {
	set item [lreplace $item $first $last]
	lappend newItemList $item
    }
    set data(itemList) $newItemList

    #
    # Update the list variable if present
    #
    condUpdateListVar $win

    #
    # Set up and adjust the columns, and rebuild some columns-related lists
    #
    setupColumns $win \
	[lreplace $data(-columns) [expr {3*$first}] [expr {3*$last + 2}]] 1
    makeColFontAndTagLists $win
    makeSortAndArrowColLists $win
    adjustColumns $win {} 1

    #
    # Reconfigure the relevant column labels
    #
    for {set col $first} {$col < $data(colCount)} {incr col} {
	reconfigColLabels $win imgs $col
    }

    #
    # Update the indices anchorCol and activeCol
    #
    set count [expr {$last - $first + 1}]
    if {$first <= $data(anchorCol)} {
	incr data(anchorCol) -$count
	if {$data(anchorCol) < $first} {
	    set data(anchorCol) $first
	}
	adjustColIndex $win data(anchorCol) 1
    }
    if {$last < $data(activeCol)} {
	incr data(activeCol) -$count
	adjustColIndex $win data(activeCol) 1
    } elseif {$first <= $data(activeCol)} {
	set data(activeCol) $first
	adjustColIndex $win data(activeCol) 1
    }
}

#------------------------------------------------------------------------------
# tablelist::insertRows
#
# Processes the tablelist insert and insertlist subcommands.
#------------------------------------------------------------------------------
proc tablelist::insertRows {win index argList updateListVar} {
    set argCount [llength $argList]
    if {$argCount == 0} {
	return ""
    }

    upvar ::tablelist::ns${win}::data data
    if {$index < $data(itemCount)} {
	displayItems $win
    }

    if {$index < 0} {
	set index 0
    } elseif {$index > $data(itemCount)} {
	set index $data(itemCount)
    }

    #
    # Insert the items into the internal list
    #
    set appending [expr {$index == $data(itemCount)}]
    set row $index
    foreach item $argList {
	#
	# Adjust the item
	#
	set item [adjustItem $item $data(colCount)]

	#
	# Get a free key for the new item
	#
	if {[llength $data(freeKeyList)] == 0} {
	    set key k[incr data(seqNum)]
	} else {
	    set key [lindex $data(freeKeyList) 0]
	    set data(freeKeyList) [lrange $data(freeKeyList) 1 end]
	}

	#
	# Insert the item into the list variable if needed
	#
	if {$updateListVar} {
	    upvar #0 $data(-listvariable) var
	    trace vdelete var wu $data(listVarTraceCmd)
	    if {$appending} {
		lappend var $item    		;# this works much faster
	    } else {
		set var [linsert $var $row $item]
	    }
	    trace variable var wu $data(listVarTraceCmd)
	}

	#
	# Insert the item into the internal list
	#
	lappend item $key
	if {$appending} {
	    lappend data(itemList) $item	;# this works much faster
	} else {
	    set data(itemList) [linsert $data(itemList) $row $item]
	}

	lappend data(rowsToDisplay) $row

	incr row
    }
    incr data(itemCount) $argCount
    set data(lastRow) [expr {$data(itemCount) - 1}]

    if {![info exists data(dispId)]} {
	#
	# Arrange for the inserted items to be displayed at idle time
	#
	set data(dispId) [after idle [list tablelist::displayItems $win]]
    }

    #
    # Update the indices anchorRow and activeRow
    #
    if {$index <= $data(anchorRow)} {
	incr data(anchorRow) $argCount
	adjustRowIndex $win data(anchorRow) 1
    }
    if {$index <= $data(activeRow)} {
	set activeRow $data(activeRow)
	incr activeRow $argCount
	adjustRowIndex $win activeRow 1
	set data(activeRow) $activeRow
    }

    #
    # Update data(editRow) if the edit window is present
    #
    if {$data(editRow) >= 0} {
	set data(editRow) [lsearch $data(itemList) "* $data(editKey)"]
    }

    return ""
}

#------------------------------------------------------------------------------
# tablelist::displayItems
#
# This procedure is invoked either as an idle callback after inserting some
# items into the internal list of the tablelist widget win, or directly, upon
# execution of some widget commands.  It displays the inserted items.
#------------------------------------------------------------------------------
proc tablelist::displayItems win {
    #
    # Nothing to do if there are no items to display
    #
    upvar ::tablelist::ns${win}::data data
    if {![info exists data(dispId)]} {
	return ""
    }

    #
    # Here we are in the case that the procedure was scheduled for
    # execution at idle time.  However, it might have been invoked
    # directly, before the idle time occured; in this case we should
    # cancel the execution of the previously scheduled idle callback.
    #
    after cancel $data(dispId)	;# no harm if data(dispId) is no longer valid
    unset data(dispId)

    #
    # Insert the items into the body text widget and into the internal list
    #
    variable canElide
    variable snipSides
    set w $data(body)
    set widgetFont $data(-font)
    set snipStr $data(-snipstring)
    set padY [expr {[$w cget -spacing1] == 0}]
    set wasEmpty [expr {[llength $data(rowsToDisplay)] == $data(itemCount)}]
    set isEmpty $wasEmpty
    set colWidthsChanged 0
    foreach row $data(rowsToDisplay) {
	set line [expr {$row + 1}]
	set item [lindex $data(itemList) $row]
	set key [lindex $item end]

	#
	# Format the item
	#
	set dispItem [lrange $item 0 $data(lastCol)]
	if {$data(hasFmtCmds)} {
	    set dispItem [formatItem $win $key $row $dispItem]
	}

	if {$isEmpty} {
	    set isEmpty 0
	} else {
	    $w insert $line.0 "\n"
	}
	if {$data(hiddenRowCount) != 0} {
	    $w tag remove hiddenRow $line.0
	}
	set multilineData {}
	set col 0
	if {$data(hasColTags)} {
	    set insertArgs {}
	    foreach text [strToDispStr $dispItem] \
		    colFont $data(colFontList) \
		    colTags $data(colTagsList) \
		    {pixels alignment} $data(colList) {
		if {$data($col-hide) && !$canElide} {
		    incr col
		    continue
		}

		#
		# Update the column width or clip the element if necessary
		#
		set multiline [string match "*\n*" $text]
		if {$pixels == 0} {		;# convention: dynamic width
		    if {$multiline} {
			set list [split $text "\n"]
			set textWidth [getListWidth $win $list $colFont]
		    } else {
			set textWidth \
			    [font measure $colFont -displayof $win $text]
		    }
		    if {$data($col-maxPixels) > 0} {
			if {$textWidth > $data($col-maxPixels)} {
			    set pixels $data($col-maxPixels)
			}
		    }
		    if {$textWidth == $data($col-elemWidth)} {
			incr data($col-widestCount)
		    } elseif {$textWidth > $data($col-elemWidth)} {
			set data($col-elemWidth) $textWidth
			set data($col-widestCount) 1
			if {$textWidth > $data($col-reqPixels)} {
			    set data($col-reqPixels) $textWidth
			    set colWidthsChanged 1
			}
		    }
		}
		if {$pixels != 0} {
		    incr pixels $data($col-delta)

		    if {$data($col-wrap) && !$multiline} {
			if {[font measure $colFont -displayof $win $text] >
			    $pixels} {
			    set multiline 1
			}
		    }

		    set snipSide \
			$snipSides($alignment,$data($col-changesnipside))
		    if {$multiline} {
			if {$data($col-wrap)} {
			    set snipSide ""
			}
			set list [split $text "\n"]
			set text [joinList $win $list $colFont \
				  $pixels $snipSide $snipStr]
		    } else {
			set text [strRange $win $text $colFont \
				  $pixels $snipSide $snipStr]
		    }
		}

		if {$multiline} {
		    lappend insertArgs "\t\t" $colTags
		    lappend multilineData $col $text $colFont $pixels $alignment
		} else {
		    lappend insertArgs "\t$text\t" $colTags
		}
		incr col
	    }

	    #
	    # Insert the item into the body text widget
	    #
	    if {[llength $insertArgs] != 0} {
		eval [list $w insert $line.0] $insertArgs
	    }

	} else {
	    set insertStr ""
	    foreach text [strToDispStr $dispItem] \
		    {pixels alignment} $data(colList) {
		if {$data($col-hide) && !$canElide} {
		    incr col
		    continue
		}

		#
		# Update the column width or clip the element if necessary
		#
		set multiline [string match "*\n*" $text]
		if {$pixels == 0} {		;# convention: dynamic width
		    if {$multiline} {
			set list [split $text "\n"]
			set textWidth [getListWidth $win $list $widgetFont]
		    } else {
			set textWidth \
			    [font measure $widgetFont -displayof $win $text]
		    }
		    if {$data($col-maxPixels) > 0} {
			if {$textWidth > $data($col-maxPixels)} {
			    set pixels $data($col-maxPixels)
			}
		    }
		    if {$textWidth == $data($col-elemWidth)} {
			incr data($col-widestCount)
		    } elseif {$textWidth > $data($col-elemWidth)} {
			set data($col-elemWidth) $textWidth
			set data($col-widestCount) 1
			if {$textWidth > $data($col-reqPixels)} {
			    set data($col-reqPixels) $textWidth
			    set colWidthsChanged 1
			}
		    }
		}
		if {$pixels != 0} {
		    incr pixels $data($col-delta)

		    if {$data($col-wrap) && !$multiline} {
			if {[font measure $widgetFont -displayof $win $text] >
			    $pixels} {
			    set multiline 1
			}
		    }

		    set snipSide \
			$snipSides($alignment,$data($col-changesnipside))
		    if {$multiline} {
			if {$data($col-wrap)} {
			    set snipSide ""
			}
			set list [split $text "\n"]
			set text [joinList $win $list $widgetFont \
				  $pixels $snipSide $snipStr]
		    } else {
			set text [strRange $win $text $widgetFont \
				  $pixels $snipSide $snipStr]
		    }
		}

		if {$multiline} {
		    append insertStr "\t\t"
		    lappend multilineData $col $text $widgetFont \
					  $pixels $alignment
		} else {
		    append insertStr "\t$text\t"
		}
		incr col
	    }

	    #
	    # Insert the item into the body text widget
	    #
	    $w insert $line.0 $insertStr
	}

	#
	# Embed the message widgets displaying multiline elements
	#
	foreach {col text font pixels alignment} $multilineData {
	    findTabs $win $line $col $col tabIdx1 tabIdx2
	    set msgScript [list ::tablelist::displayText $win $key \
			   $col $text $font $pixels $alignment]
	    $w window create $tabIdx2 -pady $padY -create $msgScript
	}
    }
    unset data(rowsToDisplay)

    #
    # Adjust the heights of the body text widget
    # and of the listbox child, if necessary
    #
    if {$data(-height) <= 0} {
	set nonHiddenRowCount [expr {$data(itemCount) - $data(hiddenRowCount)}]
	$w configure -height $nonHiddenRowCount
	$data(lb) configure -height $nonHiddenRowCount
    }

    #
    # Invalidate the list of the row indices indicating the
    # non-hidden rows, adjust the columns if necessary, and
    # schedule some operations for execution at idle time
    #
    set data(nonHiddenRowList) {-1}
    if {$colWidthsChanged} {
	adjustColumns $win {} 1
    }
    adjustElidedTextWhenIdle $win
    makeStripesWhenIdle $win
    adjustSepsWhenIdle $win
    updateVScrlbarWhenIdle $win
    showLineNumbersWhenIdle $win

    activeTrace $win data activeRow w
    if {$wasEmpty} {
	$w xview moveto [lindex [$data(hdrTxt) xview] 0]
    }
}

#------------------------------------------------------------------------------
# tablelist::insertCols
#
# Processes the tablelist insertcolumns and insertcolumnlist subcommands.
#------------------------------------------------------------------------------
proc tablelist::insertCols {win colIdx argList} {
    set argCount [llength $argList]
    if {$argCount == 0} {
	return ""
    }

    upvar ::tablelist::ns${win}::data data \
	  ::tablelist::ns${win}::attribs attribs

    #
    # Check the syntax of argList and get the number of columns to be inserted
    #
    variable alignments
    set count 0
    for {set n 0} {$n < $argCount} {incr n} {
	#
	# Check the column width
	#
	format "%d" [lindex $argList $n]    ;# integer check with error message

	#
	# Check whether the column title is present
	#
	if {[incr n] == $argCount} {
	    return -code error "column title missing"
	}

	#
	# Check the column alignment
	#
	set alignment left
	if {[incr n] < $argCount} {
	    set next [lindex $argList $n]
	    if {[catch {format "%d" $next}] == 0} {	;# integer check
		incr n -1
	    } else {
		mwutil::fullOpt "alignment" $next $alignments
	    }
	}

	incr count
    }

    #
    # Shift the elements of data and attribs corresponding to the
    # column indices >= colIdx to the right by count positions
    #
    set selCells [curCellSelection $win]
    for {set oldCol $data(lastCol); set newCol [expr {$oldCol + $count}]} \
	{$oldCol >= $colIdx} {incr oldCol -1; incr newCol -1} {
	moveColData data data imgs $oldCol $newCol
	moveColAttribs attribs attribs $oldCol $newCol
	set selCells [replaceColInCellList $selCells $oldCol $newCol]
    }

    #
    # Update the item list
    #
    set emptyStrs {}
    for {set n 0} {$n < $count} {incr n} {
	lappend emptyStrs ""
    }
    set newItemList {}
    foreach item $data(itemList) {
	set item [eval [list linsert $item $colIdx] $emptyStrs]
	lappend newItemList $item
    }
    set data(itemList) $newItemList

    #
    # Update the list variable if present
    #
    condUpdateListVar $win

    #
    # Set up and adjust the columns, and rebuild some columns-related lists
    #
    setupColumns $win \
	[eval [list linsert $data(-columns) [expr {3*$colIdx}]] $argList] 1
    makeColFontAndTagLists $win
    makeSortAndArrowColLists $win
    set limit [expr {$colIdx + $count}]
    set colIdxList {}
    for {set col $colIdx} {$col < $limit} {incr col} {
	lappend colIdxList $col
    }
    adjustColumns $win $colIdxList 1

    #
    # Reconfigure the relevant column labels
    #
    for {set col $limit} {$col < $data(colCount)} {incr col} {
	reconfigColLabels $win imgs $col
    }

    #
    # Redisplay the items
    #
    redisplay $win 0 $selCells

    #
    # Update the indices anchorCol and activeCol
    #
    if {$colIdx <= $data(anchorCol)} {
	incr data(anchorCol) $argCount
	adjustColIndex $win data(anchorCol) 1
    }
    if {$colIdx <= $data(activeCol)} {
	incr data(activeCol) $argCount
	adjustColIndex $win data(activeCol) 1
    }

    return ""
}

#------------------------------------------------------------------------------
# tablelist::doScan
#
# Processes the tablelist scan subcommand.
#------------------------------------------------------------------------------
proc tablelist::doScan {win opt x y} {
    upvar ::tablelist::ns${win}::data data
    set w $data(body)
    incr x -[winfo x $w]
    incr y -[winfo y $w]

    if {$data(-titlecolumns) == 0} {
	$w scan $opt $x $y
	$data(hdrTxt) scan $opt $x 0

	if {[string compare $opt "dragto"] == 0} {
	    adjustElidedText $win
	    updateColorsWhenIdle $win
	    adjustSepsWhenIdle $win
	    updateVScrlbarWhenIdle $win
	}
    } elseif {[string compare $opt "mark"] == 0} {
	$w scan mark 0 $y

	set data(scanMarkX) $x
	set data(scanMarkXOffset) \
	    [scrlColOffsetToXOffset $win $data(scrlColOffset)]
    } else {
	$w scan dragto 0 $y

	#
	# Compute the new scrolled x offset by amplifying the
	# difference between the current horizontal position and
	# the place where the scan started (the "mark" position)
	#
	set scrlXOffset \
	    [expr {$data(scanMarkXOffset) - 10*($x - $data(scanMarkX))}]
	set maxScrlXOffset [scrlColOffsetToXOffset $win \
			    [getMaxScrlColOffset $win]]
	if {$scrlXOffset > $maxScrlXOffset} {
	    set scrlXOffset $maxScrlXOffset
	    set data(scanMarkX) $x
	    set data(scanMarkXOffset) $maxScrlXOffset
	} elseif {$scrlXOffset < 0} {
	    set scrlXOffset 0
	    set data(scanMarkX) $x
	    set data(scanMarkXOffset) 0
	}

	#
	# Change the scrolled column offset and adjust the elided text
	#
	changeScrlColOffset $win [scrlXOffsetToColOffset $win $scrlXOffset]
	adjustElidedText $win
	updateColorsWhenIdle $win
	adjustSepsWhenIdle $win
	updateVScrlbarWhenIdle $win
    }

    return ""
}

#------------------------------------------------------------------------------
# tablelist::seeRow
#
# Processes the tablelist see subcommand.
#------------------------------------------------------------------------------
proc tablelist::seeRow {win index} {
    #
    # Adjust the index to fit within the existing items
    #
    adjustRowIndex $win index
    upvar ::tablelist::ns${win}::data data
    set key [lindex [lindex $data(itemList) $index] end]
    if {$data(itemCount) == 0 || [info exists data($key-hide)]} {
	return ""
    }

    #
    # Bring the given row into the window and restore
    # the horizontal view in the body text widget
    #
    $data(body) see [expr {double($index + 1)}]
    $data(body) xview moveto [lindex [$data(hdrTxt) xview] 0]

    adjustElidedText $win
    updateColorsWhenIdle $win
    adjustSepsWhenIdle $win
    updateVScrlbarWhenIdle $win
    return ""
}

#------------------------------------------------------------------------------
# tablelist::seeCell
#
# Processes the tablelist seecell subcommand.
#------------------------------------------------------------------------------
proc tablelist::seeCell {win row col} {
    #
    # This might be an "after idle" callback; check whether the window exists
    #
    if {![winfo exists $win]} {
	return ""
    }

    upvar ::tablelist::ns${win}::data data
    set h $data(hdrTxt)
    set b $data(body)

    #
    # Adjust the row and column indices to fit within the existing elements
    #
    adjustRowIndex $win row
    adjustColIndex $win col
    set key [lindex [lindex $data(itemList) $row] end]
    if {[info exists data($key-hide)]} {
	return ""
    }
    if {$data(colCount) == 0} {
	$b see [expr {double($row + 1)}]
	return ""
    } elseif {$data($col-hide)} {
	return ""
    }

    #
    # Force any geometry manager calculations to be completed first
    #
    update idletasks
    if {![winfo exists $win]} {			;# because of update idletasks
	return ""
    }

    #
    # If the tablelist is empty then insert a temporary row
    #
    if {$data(itemCount) == 0} {
	variable canElide
	for {set n 0} {$n < $data(colCount)} {incr n} {
	    if {!$data($n-hide) || $canElide} {
		$b insert end "\t\t"
	    }
	}

	$b xview moveto [lindex [$h xview] 0]
    }

    if {$data(-titlecolumns) == 0} {
	findTabs $win [expr {$row + 1}] $col $col tabIdx1 tabIdx2
	set nextIdx [$b index $tabIdx2+1c]
	set alignment [lindex $data(colList) [expr {2*$col + 1}]]
	set lX [winfo x $data(hdrTxtFrLbl)$col]
	set rX [expr {$lX + [winfo width $data(hdrTxtFrLbl)$col] - 1}]

	switch $alignment {
	    left {
		#
		# Bring the cell's left edge into view
		#
		$b see $tabIdx1
		$h xview moveto [lindex [$b xview] 0]

		#
		# Shift the view in the header text widget until the right
		# edge of the cell becomes visible but finish the scrolling
		# before the cell's left edge would become invisible
		#
		while {![isHdrTxtFrXPosVisible $win $rX]} {
		    $h xview scroll 1 units
		    if {![isHdrTxtFrXPosVisible $win $lX]} {
			$h xview scroll -1 units
			break
		    }
		}
	    }

	    center {
		#
		# Bring the cell's left edge into view
		#
		$b see $tabIdx1
		set winWidth [winfo width $h]
		if {[winfo width $data(hdrTxtFrLbl)$col] > $winWidth} {
		    #
		    # The cell doesn't fit into the window:  Bring its
		    # center into the window's middle horizontal position
		    #
		    $h xview moveto \
		       [expr {double($lX + $rX - $winWidth)/2/$data(hdrPixels)}]
		} else {
		    #
		    # Shift the view in the header text widget until
		    # the right edge of the cell becomes visible
		    #
		    $h xview moveto [lindex [$b xview] 0]
		    while {![isHdrTxtFrXPosVisible $win $rX]} {
			$h xview scroll 1 units
		    }
		}
	    }

	    right {
		#
		# Bring the cell's right edge into view
		#
		$b see $nextIdx
		$h xview moveto [lindex [$b xview] 0]

		#
		# Shift the view in the header text widget until the left
		# edge of the cell becomes visible but finish the scrolling
		# before the cell's right edge would become invisible
		#
		while {![isHdrTxtFrXPosVisible $win $lX]} {
		    $h xview scroll -1 units
		    if {![isHdrTxtFrXPosVisible $win $rX]} {
			$h xview scroll 1 units
			break
		    }
		}
	    }
	}

	$b xview moveto [lindex [$h xview] 0]

    } else {
	#
	# Bring the cell's row into view
	#
	$b see [expr {double($row + 1)}]

	set scrlWindowWidth [getScrlWindowWidth $win]

	if {($col < $data(-titlecolumns)) ||
	    (!$data($col-elide) &&
	     [getScrlContentWidth $win $data(scrlColOffset) $col] <=
	     $scrlWindowWidth)} {
	    #
	    # The given column index specifies either a title column or
	    # one that is fully visible; restore the horizontal view
	    #
	    $b xview moveto [lindex [$h xview] 0]
	    adjustElidedText $win
	} elseif {$data($col-elide) ||
		  [winfo width $data(hdrTxtFrLbl)$col] > $scrlWindowWidth} {
	    #
	    # The given column index specifies either an elided column or one
	    # that doesn't fit into the window; shift the horizontal view to
	    # make the column the first visible one among all scrollable columns
	    #
	    set scrlColOffset 0
	    for {incr col -1} {$col >= $data(-titlecolumns)} {incr col -1} {
		if {!$data($col-hide)} {
		    incr scrlColOffset
		}
	    }
	    changeScrlColOffset $win $scrlColOffset
	} else {
	    #
	    # The given column index specifies a non-elided
	    # scrollable column; shift the horizontal view
	    # repeatedly until the column becomes visible
	    #
	    set scrlColOffset [expr {$data(scrlColOffset) + 1}]
	    while {[getScrlContentWidth $win $scrlColOffset $col] >
		   $scrlWindowWidth} {
		incr scrlColOffset
	    }
	    changeScrlColOffset $win $scrlColOffset
	}
    }

    #
    # Delete the temporary row if any
    #
    if {$data(itemCount) == 0} {
	$b delete 1.0 end
    }

    updateColorsWhenIdle $win
    adjustSepsWhenIdle $win
    updateVScrlbarWhenIdle $win
    return ""
}

#------------------------------------------------------------------------------
# tablelist::rowSelection
#
# Processes the tablelist selection subcommand.
#------------------------------------------------------------------------------
proc tablelist::rowSelection {win opt first last} {
    upvar ::tablelist::ns${win}::data data
    if {$data(isDisabled) && [string compare $opt "includes"] != 0} {
	return ""
    }

    switch $opt {
	anchor {
	    #
	    # Adjust the index to fit within the existing non-hidden items
	    #
	    adjustRowIndex $win first 1

	    set data(anchorRow) $first
	    return ""
	}

	clear {
	    #
	    # Swap the indices if necessary
	    #
	    if {$last < $first} {
		set tmp $first
		set first $last
		set last $tmp
	    }

	    set firstTextIdx [expr {$first + 1}].0
	    set lastTextIdx [expr {$last + 1}].end

	    #
	    # Find the (partly) selected lines of the body text
	    # widget in the text range specified by the two indices
	    #
	    set w $data(body)
	    variable canElide
	    variable elide
	    set selRange [$w tag nextrange select $firstTextIdx $lastTextIdx]
	    while {[llength $selRange] != 0} {
		set selStart [lindex $selRange 0]

		$w tag remove select $selStart "$selStart lineend"

		#
		# Handle the -(select)background and -(select)foreground cell
		# and column configuration options for each element of the row
		#
		set row [expr {int($selStart) - 1}]
		set key [lindex [lindex $data(itemList) $row] end]
		set textIdx1 "$selStart linestart"
		for {set col 0} {$col < $data(colCount)} {incr col} {
		    if {$data($col-hide) && !$canElide} {
			continue
		    }

		    set textIdx2 [$w search $elide "\t" \
				  $textIdx1+1c "$selStart lineend"]+1c
		    foreach optTail {background foreground} {
			set opt -select$optTail
			foreach name  [list $col$opt $key$opt $key,$col$opt] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				$w tag remove $level$opt-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
			foreach name  [list $col-$optTail $key-$optTail \
				       $key,$col-$optTail] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				$w tag add $level-$optTail-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
		    }
		    set textIdx1 $textIdx2
		}

		set selRange \
		    [$w tag nextrange select "$selStart lineend" $lastTextIdx]
	    }

	    updateColorsWhenIdle $win
	    return ""
	}

	includes {
	    set w $data(body)
	    set textIdx [expr {double($first + 1)}]
	    set selRange [$w tag nextrange select $textIdx "$textIdx lineend"]
	    if {[llength $selRange] > 0} {
		return 1
	    } else {
		return 0
	    }
	}

	set {
	    #
	    # Swap the indices if necessary and adjust
	    # the range to fit within the existing items
	    #
	    if {$last < $first} {
		set tmp $first
		set first $last
		set last $tmp
	    }
	    if {$first < 0} {
		set first 0
	    }
	    if {$last > $data(lastRow)} {
		set last $data(lastRow)
	    }

	    set w $data(body)
	    variable canElide
	    variable elide
	    for {set row $first; set line [expr {$first + 1}]} \
		{$row <= $last} {set row $line; incr line} {
		#
		# Check whether the row is selectable and non-hidden
		#
		set key [lindex [lindex $data(itemList) $row] end]
		if {[info exists data($key-selectable)] ||
		    [info exists data($key-hide)]} {
		    continue
		}

		#
		# Select the non-hidden elements of the row and handle
		# the -(select)background and -(select)foreground
		# cell and column configuration options for them
		#
		set textIdx1 $line.0
		for {set col 0} {$col < $data(colCount)} {incr col} {
		    if {$data($col-hide) && !$canElide} {
			continue
		    }

		    set textIdx2 \
			[$w search $elide "\t" $textIdx1+1c $line.end]+1c
		    if {$data($col-hide)} {
			set textIdx1 $textIdx2
			continue
		    }

		    $w tag add select $textIdx1 $textIdx2
		    foreach optTail {background foreground} {
			set opt -select$optTail
			foreach name  [list $col$opt $key$opt $key,$col$opt] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				$w tag add $level$opt-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
			foreach name  [list $col-$optTail $key-$optTail \
				       $key,$col-$optTail] \
				level [list col row cell] {
			    if {[info exists data($name)]} {
				$w tag remove $level-$optTail-$data($name) \
				       $textIdx1 $textIdx2
			    }
			}
		    }
		    set textIdx1 $textIdx2
		}
	    }

	    #
	    # If the selection is exported and there are any selected
	    # cells in the widget then make win the new owner of the
	    # PRIMARY selection and register a callback to be invoked
	    # when it loses ownership of the PRIMARY selection
	    #
	    if {$data(-exportselection) &&
		[llength [$w tag nextrange select 1.0]] != 0} {
		selection own -command \
			[list ::tablelist::lostSelection $win] $win
	    }

	    updateColorsWhenIdle $win
	    return ""
	}
    }
}

#
# Private callback procedures
# ===========================
#

#------------------------------------------------------------------------------
# tablelist::fetchSelection
#
# This procedure is invoked when the PRIMARY selection is owned by the
# tablelist widget win and someone attempts to retrieve it as a STRING.  It
# returns part or all of the selection, as given by offset and maxChars.  The
# string which is to be (partially) returned is built by joining all of the
# selected elements of the (partly) selected rows together with tabs and the
# rows themselves with newlines.
#------------------------------------------------------------------------------
proc tablelist::fetchSelection {win offset maxChars} {
    upvar ::tablelist::ns${win}::data data
    if {!$data(-exportselection)} {
	return ""
    }

    set selection ""
    set prevRow -1
    foreach cellIdx [curCellSelection $win] {
	scan $cellIdx "%d,%d" row col
	if {$row != $prevRow} {
	    if {$prevRow != -1} {
		append selection "\n"
	    }

	    set prevRow $row
	    set item [lindex $data(itemList) $row]
	    set isFirstCol 1
	}

	set key [lindex $item end]
	set text [lindex $item $col]
	if {[lindex $data(fmtCmdFlagList) $col]} {
	    set text [formatElem $win $key $row $col $text]
	}

	if {!$isFirstCol} {
	    append selection "\t"
	}
	append selection $text

	set isFirstCol 0
    }

    return [string range $selection $offset [expr {$offset + $maxChars - 1}]]
}

#------------------------------------------------------------------------------
# tablelist::lostSelection
#
# This procedure is invoked when the tablelist widget win loses ownership of
# the PRIMARY selection.  It deselects all items of the widget with the aid of
# the rowSelection procedure if the selection is exported.
#------------------------------------------------------------------------------
proc tablelist::lostSelection win {
    upvar ::tablelist::ns${win}::data data
    if {$data(-exportselection)} {
	rowSelection $win clear 0 $data(lastRow)
	event generate $win <<TablelistSelectionLost>>
    }
}

#------------------------------------------------------------------------------
# tablelist::activeTrace
#
# This procedure is executed whenever the array element data(activeRow),
# data(activeCol), or data(-selecttype) is written.  It moves the "active" tag
# to the line or cell that displays the active item or element of the widget in
# its body text child if the latter has the keyboard focus.
#------------------------------------------------------------------------------
proc tablelist::activeTrace {win varName index op} {
    upvar ::tablelist::ns${win}::data data
    set w $data(body)
    if {$data(ownsFocus) && ![info exists data(dispId)]} {
	$w tag remove active 1.0 end

	set line [expr {$data(activeRow) + 1}]
	set col $data(activeCol)
	if {[string compare $data(-selecttype) "row"] == 0} {
	    $w tag add active $line.0 $line.end
	} elseif {$data(itemCount) > 0 && $data(colCount) > 0 &&
		  $line > 0 && !$data($col-hide)} {
	    findTabs $win $line $data(activeCol) $data(activeCol) \
		     tabIdx1 tabIdx2
	    $w tag add active $tabIdx1 $tabIdx2+1c
	}
    }
}

#------------------------------------------------------------------------------
# tablelist::listVarTrace
#
# This procedure is executed whenever the global variable specified by varName
# is written or unset.  It makes sure that the contents of the widget will be
# synchronized with the value of the variable at idle time, and that the
# variable is recreated if it was unset.
#------------------------------------------------------------------------------
proc tablelist::listVarTrace {win varName index op} {
    upvar ::tablelist::ns${win}::data data
    switch $op {
	w {
	    if {![info exists data(syncId)]} {
		#
		# Arrange for the contents of the widget to be synchronized
		# with the value of the variable ::$varName at idle time
		#
		set data(syncId) [after idle [list tablelist::synchronize $win]]
	    }
	}

	u {
	    #
	    # Recreate the variable ::$varName by setting it according to
	    # the value of data(itemList), and set the trace on it again
	    #
	    if {[string compare $index ""] != 0} {
		set varName ${varName}($index)
	    }
	    set ::$varName {}
	    foreach item $data(itemList) {
		lappend ::$varName [lrange $item 0 $data(lastCol)]
	    }
	    trace variable ::$varName wu $data(listVarTraceCmd)
	}
    }
}
