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# combo.rb --
#
# This demonstration script creates several combobox widgets.
#
# based on "Id: combo.tcl,v 1.3 2007/12/13 15:27:07 dgp Exp"
if defined?($combo_demo) && $combo_demo
$combo_demo.destroy
$combo_demo = nil
end
$combo_demo = TkToplevel.new {|w|
title("Combobox Demonstration")
iconname("combo")
positionWindow(w)
}
base_frame = TkFrame.new($combo_demo).pack(:fill=>:both, :expand=>true)
Ttk::Label.new(base_frame, :font=>$font, :wraplength=>'5i', :justify=>:left,
:text=><<EOL).pack(:side=>:top, :fill=>:x)
Three different combo-boxes are displayed below. \
You can add characters to the first \
one by pointing, clicking and typing, just as with an entry; pressing \
Return will cause the current value to be added to the list that is \
selectable from the drop-down list, and you can choose other values \
by pressing the Down key, using the arrow keys to pick another one, \
and pressing Return again. The second combo-box is fixed to a \
particular value, and cannot be modified at all. The third one only \
allows you to select values from its drop-down list of Australian \
cities.
EOL
## variables
firstValue = TkVariable.new
secondValue = TkVariable.new
ozCity = TkVariable.new
## See Code / Dismiss buttons
Ttk::Frame.new(base_frame) {|frame|
sep = Ttk::Separator.new(frame)
Tk.grid(sep, :columnspan=>4, :row=>0, :sticky=>'ew', :pady=>2)
TkGrid('x',
Ttk::Button.new(frame, :text=>'See Variables',
:image=>$image['view'], :compound=>:left,
:command=>proc{
showVars(base_frame,
['firstVariable', firstValue],
['secondVariable', secondValue],
['ozCity', ozCity])
}),
Ttk::Button.new(frame, :text=>'See Code',
:image=>$image['view'], :compound=>:left,
:command=>proc{showCode 'combo'}),
Ttk::Button.new(frame, :text=>'Dismiss',
:image=>$image['delete'], :compound=>:left,
:command=>proc{
$combo_demo.destroy
$combo_demo = nil
}),
:padx=>4, :pady=>4)
grid_columnconfigure(0, :weight=>1)
pack(:side=>:bottom, :fill=>:x)
}
frame = Ttk::Frame.new(base_frame).pack(:fill=>:both, :expand=>true)
australianCities = [
'Canberra', 'Sydney', 'Melbourne', 'Perth', 'Adelaide', 'Brisbane',
'Hobart', 'Darwin', 'Alice Springs'
]
secondValue.value = 'unchangable'
ozCity.value = 'Sydney'
Tk.pack(Ttk::Labelframe.new(frame, :text=>'Fully Editable'){|f|
Ttk::Combobox.new(f, :textvariable=>firstValue){|b|
b.bind('Return', '%W'){|w|
w.values <<= w.value unless w.values.include?(w.value)
}
}.pack(:pady=>5, :padx=>10)
},
Ttk::LabelFrame.new(frame, :text=>'Disabled'){|f|
Ttk::Combobox.new(f, :textvariable=>secondValue, :state=>:disabled) .
pack(:pady=>5, :padx=>10)
},
Ttk::LabelFrame.new(frame, :text=>'Defined List Only'){|f|
Ttk::Combobox.new(f, :textvariable=>ozCity, :state=>:readonly,
:values=>australianCities) .
pack(:pady=>5, :padx=>10)
},
:side=>:top, :pady=>5, :padx=>10)
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