scrolledtext.itk

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	configure -visibleitems $itk_option(-visibleitems)
    }
}

# ------------------------------------------------------------------
# OPTION: -visibleitems
#
# Specified the widthxheight in characters and lines for the text.
# This option is only administered if the width and height options
# are both set to zero, otherwise they take precedence.  With the
# visibleitems option engaged, geometry constraints are maintained
# only on the text.  The size of the other components such as 
# labels, margins, and scroll bars, are additive and independent, 
# effecting the overall size of the scrolled text.  In contrast,
# should the width and height options have non zero values, they
# are applied to the scrolled text as a whole.  The text is 
# compressed or expanded to maintain the geometry constraints.
# ------------------------------------------------------------------
configbody iwidgets::Scrolledtext::visibleitems {
    if {[regexp {^[0-9]+x[0-9]+$} $itk_option(-visibleitems)]} {
	if {($itk_option(-width) == 0) && \
		($itk_option(-height) == 0)} {
	    set chars [lindex [split $itk_option(-visibleitems) x] 0]
	    set lines [lindex [split $itk_option(-visibleitems) x] 1]
	    
	    set shell [lindex [grid info $itk_component(clipper)] 1]

	    #
	    # Due to a bug in the tk4.2 grid, we have to check the 
	    # propagation before setting it.  Setting it to the same
	    # value it already is will cause it to toggle.
	    #
	    if {! [grid propagate $shell]} {
		grid propagate $shell yes
	    }
	    
	    $itk_component(text) configure -width $chars -height $lines
	}
	
    } else {
	error "bad visibleitems option\
		\"$itk_option(-visibleitems)\": should be\
		widthxheight"
    }
}

# ------------------------------------------------------------------
#                            METHODS
# ------------------------------------------------------------------

# ------------------------------------------------------------------
# METHOD: bbox index
#
# Returns four element list describing the bounding box for the list
# item at index
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::bbox {index} {
    return [$itk_component(text) bbox $index]
}

# ------------------------------------------------------------------
# METHOD clear 
#
# Clear the text area.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::clear {} {
    $itk_component(text) delete 1.0 end
}

# ------------------------------------------------------------------
# METHOD import filename
#
# Load text from an existing file (import filename)
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::import {filename {index end}} {
    set f [open $filename r]
    insert $index [read $f]
    close $f
}

# ------------------------------------------------------------------
# METHOD export filename
#
# write text to a file (export filename)
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::export {filename} {
    set f [open $filename w]
    
    set txt [$itk_component(text) get 1.0 end]
    puts $f $txt
    
    flush $f
    close $f
}

# ------------------------------------------------------------------
# METHOD compare index1 op index2
#
# Compare indices according to relational operator.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::compare {index1 op index2} {
    return [$itk_component(text) compare $index1 $op $index2]
}

# ------------------------------------------------------------------
# METHOD debug ?boolean?
#
# Activates consistency checks in B-tree code associated with text
# widgets.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::debug {args} {
    eval $itk_component(text) debug $args
}

# ------------------------------------------------------------------
# METHOD delete first ?last?
#
# Delete a range of characters from the text.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::delete {first {last {}}} {
    $itk_component(text) delete $first $last
}

# ------------------------------------------------------------------
# METHOD dlineinfo index
#
# Returns a five element list describing the area occupied by the
# display line containing index.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::dlineinfo {index} {
    return [$itk_component(text) dlineinfo $index]
}

# ------------------------------------------------------------------
# METHOD get index1 ?index2?
#
# Return text from start index to end index.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::get {index1 {index2 {}}} {
    return [$itk_component(text) get $index1 $index2]
}

# ------------------------------------------------------------------
# METHOD image option ?arg arg ...?
#
# Manipulate images dependent on options.
#
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::image {option args} {
  return [eval $itk_component(text) image $option $args]
}


# ------------------------------------------------------------------
# METHOD index index
#
# Return position corresponding to index.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::index {index} {
    return [$itk_component(text) index $index]
}

# ------------------------------------------------------------------
# METHOD insert index chars ?tagList?
#
# Insert text at index.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::insert {args} {
    eval $itk_component(text) insert $args
}

# ------------------------------------------------------------------
# METHOD mark option ?arg arg ...?
#
# Manipulate marks dependent on options.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::mark {option args} {
    return [eval $itk_component(text) mark $option $args]
}

# ------------------------------------------------------------------
# METHOD scan option args
#
# Implements scanning on texts.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::scan {option args} {
    eval $itk_component(text) scan $option $args
}

# ------------------------------------------------------------------
# METHOD search ?switches? pattern index ?varName?
#
# Searches the text for characters matching a pattern.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::search {args} {
    #-----------------------------------------------------------
    # BUG FIX: csmith (Chad Smith: [e-mail]), 11/18/99
    #-----------------------------------------------------------
    # Need to run this command up one level on the stack since
    # the text widget may modify one of the arguments, which is
    # the case when -count is specified.
    #-----------------------------------------------------------
    return [uplevel eval $itk_component(text) search $args]
}

# ------------------------------------------------------------------
# METHOD see index
#
# Adjusts the view in the window so the character at index is 
# visible.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::see {index} {
    $itk_component(text) see $index
}

# ------------------------------------------------------------------
# METHOD tag option ?arg arg ...?
#
# Manipulate tags dependent on options.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::tag {option args} {
    return [eval $itk_component(text) tag $option $args]
}

# ------------------------------------------------------------------
# METHOD window option ?arg arg ...?
#
# Manipulate embedded windows.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::window {option args} {
    return [eval $itk_component(text) window $option $args]
}

# ------------------------------------------------------------------
# METHOD xview
#
# Changes x view in widget's window.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::xview {args} {
    return [eval $itk_component(text) xview $args]
}

# ------------------------------------------------------------------
# METHOD yview
#
# Changes y view in widget's window.
# ------------------------------------------------------------------
body iwidgets::Scrolledtext::yview {args} {
    return [eval $itk_component(text) yview $args]
}