Class: Glimmer::SWT::Custom::RadioGroup

Inherits:
Object
  • Object
show all
Includes:
UI::CustomWidget
Defined in:
lib/glimmer/swt/custom/radio_group.rb

Overview

A custom widget rendering a group of radios generated via data-binding

Instance Attribute Summary

Attributes included from UI::CustomWidget

#body_root, #options, #parent, #parent_proxy, #swt_style, #swt_widget

Instance Method Summary collapse

Methods included from UI::CustomWidget

add_custom_widget_namespaces_for, #add_observer, after_body, #async_exec, #attribute_setter, before_body, body, #can_add_observer?, #content, current_custom_widgets, custom_widget_namespaces, def_option_attr_accessors, #disposed?, flyweight_custom_widget_classes, for, #get_attribute, #has_instance_method?, #has_style?, #initialize, keyword, #local_respond_to?, #method_missing, namespaces_for_class, #observer_registrations, option, options, #post_initialize_child, reset_custom_widget_namespaces, #respond_to?, shortcut_keyword, #sync_exec, #timer_exec

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Glimmer::UI::CustomWidget

Instance Method Details

#can_handle_observation_request?(observation_request) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/swt/custom/radio_group.rb', line 75

def can_handle_observation_request?(observation_request)
  radios.first&.can_handle_observation_request?(observation_request) or
    super(observation_request)
end

#delegate_observation_request_to_radios(observation_request, &block) ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 86

def delegate_observation_request_to_radios(observation_request, &block)
  if observation_request != 'on_widget_disposed'
    radios.count.times do |index|
      radio = radios[index]
      label = labels[index]
      if observation_request == 'on_widget_selected'
        radio_block = lambda do |event|
          if event.widget.selection || selection_index == -1
            event.widget = self.swt_widget
            block.call(event)
          end
        end
        label_block = lambda do |event|
          self.selection_index = index
          block.call(event)
        end
        radio.handle_observation_request(observation_request, &radio_block) if radio.can_handle_observation_request?(observation_request)
        label.handle_observation_request('on_mouse_up', &label_block)
      else
        listener_block = lambda do |event|
          event.widget = self.swt_widget
          block.call(event)
        end
        radio.handle_observation_request(observation_request, &listener_block) if radio.can_handle_observation_request?(observation_request)
        label.handle_observation_request(observation_request, &listener_block) if label.can_handle_observation_request?(observation_request)
      end
    end
  end
end

#handle_observation_request(observation_request, &block) ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 80

def handle_observation_request(observation_request, &block)
  observation_requests << [observation_request, block]
  delegate_observation_request_to_radios(observation_request, &block)
  super
end

#has_attribute?(attribute_name, *args) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/swt/custom/radio_group.rb', line 120

def has_attribute?(attribute_name, *args)
  (@composites.to_a + @radios.to_a + @labels.to_a).map do |widget_proxy|
    return true if widget_proxy.has_attribute?(attribute_name, *args)
  end
  super
end

#items ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 41

def items
  @items || []
end

#items=(text_array) ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 35

def items=(text_array)
  selection_value = selection
  @items = Array[*text_array]
  build_radios
end

#labels ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 71

def labels
  @labels ||= []
end

#observation_requests ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 116

def observation_requests
  @observation_requests ||= Set.new
end

#radios ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 67

def radios
  @radios ||= []
end

#selection ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 53

def selection
  selection_value = labels[selection_index]&.text unless selection_index == -1
  selection_value.to_s
end

#selection=(text) ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 45

def selection=(text)
  radios.count.times do |index|
    radio = radios[index]
    item = items[index]
    radio.selection = item == text
  end
end

#selection_index ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 63

def selection_index
  radios.index(radios.detect(&:selection)) || -1
end

#selection_index=(index) ⇒ Object Also known as: select 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 58

def selection_index=(index)
  self.selection=(items[index])
end

#set_attribute(attribute_name, *args) ⇒ Object 



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# File 'lib/glimmer/swt/custom/radio_group.rb', line 127

def set_attribute(attribute_name, *args)
  excluded_attributes = ['selection']
  unless excluded_attributes.include?(attribute_name.to_s)
    (@composites.to_a + @radios.to_a + @labels.to_a).each do |widget_proxy|
      widget_proxy.set_attribute(attribute_name, *args) if widget_proxy.has_attribute?(attribute_name, *args)
    end
  end
  super
end