#!itcl_wish -f
# ----------------------------------------------------------------------
#  PURPOSE:  color selection lists (demo for [incr Tcl] facilities)
#
#   AUTHOR:  Michael J. McLennan       Phone: (215)770-2842
#            AT&T Bell Laboratories   E-mail: aluxpo!mmc@att.com
#
#     SCCS:  %W% (%G%)
# ----------------------------------------------------------------------
#            Copyright (c) 1993  AT&T  All Rights Reserved
# ======================================================================

# ----------------------------------------------------------------------
# Set path for autoloader...
# ----------------------------------------------------------------------
if {![file exists ./widgets]} {
	puts stderr "== This demo must be executed in the \"demos\" directory =="
	exit 1
}
lappend auto_path ./widgets

# ----------------------------------------------------------------------
# Define two color lists to illustrate "config" methods...
# ----------------------------------------------------------------------
set simplecolors [list black white yellow blue red green purple orange]

set allcolors [list \
	snow GhostWhite WhiteSmoke gainsboro FloralWhite OldLace linen \
	AntiqueWhite PapayaWhip BlanchedAlmond bisque PeachPuff NavajoWhite \
	moccasin cornsilk ivory LemonChiffon seashell honeydew MintCream \
	azure AliceBlue lavender LavenderBlush MistyRose white black \
	DarkSlateGray DimGray SlateGray LightSlateGray gray LightGray \
	MidnightBlue NavyBlue CornflowerBlue DarkSlateBlue SlateBlue \
	MediumSlateBlue LightSlateBlue MediumBlue RoyalBlue blue DodgerBlue \
	DeepSkyBlue SkyBlue LightSkyBlue SteelBlue LightSteelBlue LightBlue \
	PowderBlue PaleTurquoise DarkTurquoise MediumTurquoise turquoise \
	cyan LightCyan CadetBlue MediumAquamarine aquamarine DarkGreen \
	DarkOliveGreen DarkSeaGreen SeaGreen MediumSeaGreen LightSeaGreen \
	PaleGreen SpringGreen LawnGreen green chartreuse MediumSpringGreen \
	GreenYellow LimeGreen YellowGreen ForestGreen OliveDrab DarkKhaki \
	khaki PaleGoldenrod LightGoldenrodYellow LightYellow yellow gold \
	LightGoldenrod goldenrod DarkGoldenrod RosyBrown IndianRed SaddleBrown \
	sienna peru burlywood beige wheat SandyBrown tan chocolate firebrick \
	brown DarkSalmon salmon LightSalmon orange DarkOrange coral LightCoral \
	tomato OrangeRed red HotPink DeepPink pink LightPink PaleVioletRed \
	maroon MediumVioletRed VioletRed magenta violet plum orchid MediumOrchid \
	DarkOrchid DarkViolet BlueViolet purple MediumPurple thistle \
]

# ----------------------------------------------------------------------
#  PROC:  update_color_sample sampleFrame colorName state
#
#  Used as the action for SelectBox and FilteredBox widgets.
#  Invoked whenever an entry in the list is selected/deselected to update
#  a bar of color samples drawn above the selection list.  Illustrates
#  how action commands can be associated with list selection.
# ----------------------------------------------------------------------
proc update_color_sample {sample color state} {
	switch $state {
		on {
			if {[catch "frame $sample.x$color -bg $color \
						-geometry 3x20 -borderwidth 2 \
						-relief raised"] == 0} {
				pack append $sample $sample.x$color {left expand fill}
			}
		}
		off {
			catch "destroy $sample.x$color"
		}
	}
}

# ----------------------------------------------------------------------
#  Build main window...
# ----------------------------------------------------------------------
message .intro -aspect 800 -bg seashell -text "This is a simple demonstration of three new widgets created entirely with Tcl code using \[incr Tcl\].  It demonstrates the following:\n  - new widget classes can be created by combining simple widgets into a \"mega-widget\", without introducing new C code\n  - inheritance allows widgets to be specialized\n\nNote that \[incr Tcl\] is more than a mega-widget builder.  Object-oriented programming techniques can be used to better encapsulate Tcl code in all kinds of applications."

# ----------------------------------------------------------------------
#  Make a plain display list of color names...
# ----------------------------------------------------------------------
frame .plain
frame .plain.sample -borderwidth 5 -geometry 50x30
frame .plain.mesg -borderwidth 5
message .plain.mesg.text -justify center -width 300 -bg seashell \
	-text "class: ListBox\n\nDisplays a list of items with a scrollbar that appears automatically whenever list is longer than display area.\n\n"
pack append .plain.mesg .plain.mesg.text {top fill}

ListBox .plain.box -list $allcolors

pack append .plain \
	.plain.sample {top fillx} \
	.plain.mesg {top filly} \
	.plain.box {top expand fill}

# ----------------------------------------------------------------------
#  Make a selection box with color names...
# ----------------------------------------------------------------------
frame .select
frame .select.sample -borderwidth 5 -geometry 50x30
frame .select.mesg -borderwidth 5
message .select.mesg.text -justify center -width 300 -bg seashell \
	-text "class: SelectBox\nDerived from class ListBox\n\nAdds interactive selection of list items.  Can be configured for \"single\" or \"multi\" select, and can have a Tcl command associated with the selection action."
pack append .select.mesg .select.mesg.text {top fill}

SelectBox .select.box -list $allcolors \
	-action "update_color_sample .select.sample"

pack append .select \
	.select.sample {top fillx} \
	.select.mesg {top filly} \
	.select.box {top expand fill}

# ----------------------------------------------------------------------
#  Make a filtered selection box with color names...
# ----------------------------------------------------------------------
frame .filtered
frame .filtered.sample -borderwidth 5 -geometry 50x30
frame .filtered.mesg -borderwidth 5
message .filtered.mesg.text -justify center -width 300 -bg seashell \
	-text "class: FilteredBox\nContains a SelectBox\n\nAdds filtering facilities which restrict the list of displayed items to those matching a string pattern.\n"
pack append .filtered.mesg .filtered.mesg.text {top fill}

FilteredBox .filtered.box -list $allcolors \
	-action "update_color_sample .filtered.sample" \
	-title "Select colors" -filter "*"

pack append .filtered \
	.filtered.sample {top fillx} \
	.filtered.mesg {top filly} \
	.filtered.box {top expand fill}

# ----------------------------------------------------------------------
#  Pack into main window
# ----------------------------------------------------------------------
frame .boxes -borderwidth 5
lower .boxes
pack append .boxes \
	.plain {left expand fill} \
	.select {left expand fill} \
	.filtered {left expand fill}

button .all -text "All Colors" -command \
	".plain.box config -list [list $allcolors]; \
	 .select.box config -list [list $allcolors]; \
	 .filtered.box config -list [list $allcolors]"

button .simple -text "Simple Colors" -command \
	".plain.box config -list [list $simplecolors]; \
	 .select.box config -list [list $simplecolors]; \
	 .filtered.box config -list [list $simplecolors]"

button .quit -text "Quit" -command "exit"

frame .controls -borderwidth 5
lower .controls
pack append .controls \
	.simple {left padx 5} \
	.all {left padx 5} \
	.quit {left padx 10}

pack append . \
	.intro {top fill} \
	.boxes {top expand fill} \
	.controls {top frame n fillx}

wm min . 0 0