Class: Shoes::Swt::RadioGroup

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Includes:
Enumerable
Defined in:
shoes-swt/lib/shoes/swt/radio_group.rb

Overview

In Swt radio groups are managed by composites which occupy space and can interfere with users interacting with other controls. Here we simulate radio groups so that they can all be in one composite.

Constant Summary collapse

DEFAULT_RADIO_GROUP = 
"Default Radio Group"

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name = DEFAULT_RADIO_GROUP) ⇒ RadioGroup

Returns a new instance of RadioGroup.



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# File 'shoes-swt/lib/shoes/swt/radio_group.rb', line 19

def initialize(name = DEFAULT_RADIO_GROUP)
  @name = name
  @radio_buttons = []
  @selection_listeners = []
end

Class Attribute Details

.group_lookup ⇒ Object (readonly)

Returns the value of attribute group_lookup.



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# File 'shoes-swt/lib/shoes/swt/radio_group.rb', line 46

def group_lookup
  @group_lookup
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'shoes-swt/lib/shoes/swt/radio_group.rb', line 16

def name
  @name
end

Instance Method Details

#add(radio_button) ⇒ Object 



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# File 'shoes-swt/lib/shoes/swt/radio_group.rb', line 25

def add(radio_button)
  return if @radio_buttons.include?(radio_button)
  @radio_buttons << radio_button

  selection_listener = SelectionListener.new radio_button do |selected_radio, _event|
    select_only_one_radio_in_group(selected_radio)
  end
  @selection_listeners << selection_listener
  radio_button.real.add_selection_listener selection_listener
end

#remove(radio_button) ⇒ Object 



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# File 'shoes-swt/lib/shoes/swt/radio_group.rb', line 36

def remove(radio_button)
  index = @radio_buttons.index(radio_button)
  return if index.nil?
  @radio_buttons.delete_at(index)

  radio_button.real.remove_selection_listener @selection_listeners[index]
  @selection_listeners.delete_at(index)
end

#select_only_one_radio_in_group(selected_radio) ⇒ Object 



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# File 'shoes-swt/lib/shoes/swt/radio_group.rb', line 49

def select_only_one_radio_in_group(selected_radio)
  @radio_buttons.each do |radio|
    radio.real.set_selection(radio == selected_radio)
  end
end