Class: Glimmer::LibUI::ControlProxy

Inherits:
Object
  • Object
show all
Includes:
DataBindable
Defined in:
lib/glimmer/libui/control_proxy.rb,
lib/glimmer/libui/control_proxy/box.rb,
lib/glimmer/libui/control_proxy/column.rb,
lib/glimmer/libui/control_proxy/area_proxy.rb,
lib/glimmer/libui/control_proxy/form_proxy.rb,
lib/glimmer/libui/control_proxy/grid_proxy.rb,
lib/glimmer/libui/control_proxy/menu_proxy.rb,
lib/glimmer/libui/control_proxy/path_proxy.rb,
lib/glimmer/libui/control_proxy/text_proxy.rb,
lib/glimmer/libui/control_proxy/dual_column.rb,
lib/glimmer/libui/control_proxy/entry_proxy.rb,
lib/glimmer/libui/control_proxy/group_proxy.rb,
lib/glimmer/libui/control_proxy/image_proxy.rb,
lib/glimmer/libui/control_proxy/label_proxy.rb,
lib/glimmer/libui/control_proxy/message_box.rb,
lib/glimmer/libui/control_proxy/table_proxy.rb,
lib/glimmer/libui/control_proxy/button_proxy.rb,
lib/glimmer/libui/control_proxy/matrix_proxy.rb,
lib/glimmer/libui/control_proxy/slider_proxy.rb,
lib/glimmer/libui/control_proxy/window_proxy.rb,
lib/glimmer/libui/control_proxy/spinbox_proxy.rb,
lib/glimmer/libui/control_proxy/triple_column.rb,
lib/glimmer/libui/control_proxy/checkbox_proxy.rb,
lib/glimmer/libui/control_proxy/combobox_proxy.rb,
lib/glimmer/libui/control_proxy/tab_item_proxy.rb,
lib/glimmer/libui/control_proxy/editable_column.rb,
lib/glimmer/libui/control_proxy/menu_item_proxy.rb,
lib/glimmer/libui/control_proxy/image_part_proxy.rb,
lib/glimmer/libui/control_proxy/enableable_column.rb,
lib/glimmer/libui/control_proxy/font_button_proxy.rb,
lib/glimmer/libui/control_proxy/color_button_proxy.rb,
lib/glimmer/libui/control_proxy/open_type_tag_proxy.rb,
lib/glimmer/libui/control_proxy/radio_buttons_proxy.rb,
lib/glimmer/libui/control_proxy/multiline_entry_proxy.rb,
lib/glimmer/libui/control_proxy/box/vertical_box_proxy.rb,
lib/glimmer/libui/control_proxy/date_time_picker_proxy.rb,
lib/glimmer/libui/control_proxy/editable_combobox_proxy.rb,
lib/glimmer/libui/control_proxy/box/horizontal_box_proxy.rb,
lib/glimmer/libui/control_proxy/column/text_column_proxy.rb,
lib/glimmer/libui/control_proxy/open_type_features_proxy.rb,
lib/glimmer/libui/control_proxy/column/image_column_proxy.rb,
lib/glimmer/libui/control_proxy/message_box/msg_box_proxy.rb,
lib/glimmer/libui/control_proxy/column/button_column_proxy.rb,
lib/glimmer/libui/control_proxy/column/checkbox_column_proxy.rb,
lib/glimmer/libui/control_proxy/column/image_text_column_proxy.rb,
lib/glimmer/libui/control_proxy/column/text_color_column_proxy.rb,
lib/glimmer/libui/control_proxy/entry_proxy/search_entry_proxy.rb,
lib/glimmer/libui/control_proxy/area_proxy/scrolling_area_proxy.rb,
lib/glimmer/libui/control_proxy/message_box/msg_box_error_proxy.rb,
lib/glimmer/libui/control_proxy/column/progress_bar_column_proxy.rb,
lib/glimmer/libui/control_proxy/entry_proxy/password_entry_proxy.rb,
lib/glimmer/libui/control_proxy/column/checkbox_text_column_proxy.rb,
lib/glimmer/libui/control_proxy/column/background_color_column_proxy.rb,
lib/glimmer/libui/control_proxy/column/image_text_color_column_proxy.rb,
lib/glimmer/libui/control_proxy/menu_item_proxy/quit_menu_item_proxy.rb,
lib/glimmer/libui/control_proxy/menu_item_proxy/about_menu_item_proxy.rb,
lib/glimmer/libui/control_proxy/menu_item_proxy/check_menu_item_proxy.rb,
lib/glimmer/libui/control_proxy/menu_item_proxy/radio_menu_item_proxy.rb,
lib/glimmer/libui/control_proxy/column/checkbox_text_color_column_proxy.rb,
lib/glimmer/libui/control_proxy/date_time_picker_proxy/date_picker_proxy.rb,
lib/glimmer/libui/control_proxy/date_time_picker_proxy/time_picker_proxy.rb,
lib/glimmer/libui/control_proxy/menu_item_proxy/separator_menu_item_proxy.rb,
lib/glimmer/libui/control_proxy/menu_item_proxy/preferences_menu_item_proxy.rb,
lib/glimmer/libui/control_proxy/multiline_entry_proxy/non_wrapping_multiline_entry_proxy.rb

Overview

Proxy for LibUI control objects

Follows the Proxy Design Pattern

Defined Under Namespace

Modules: Box, Column, DualColumn, EditableColumn, EnableableColumn, MessageBox, TripleColumn Classes: AreaProxy, ButtonProxy, CheckboxProxy, ColorButtonProxy, ComboboxProxy, DateTimePickerProxy, EditableComboboxProxy, EntryProxy, FontButtonProxy, FormProxy, GridProxy, GroupProxy, ImagePartProxy, ImageProxy, LabelProxy, MatrixProxy, MenuItemProxy, MenuProxy, MultilineEntryProxy, NonWrappingMultilineEntryProxy, OpenTypeFeaturesProxy, OpenTypeTagProxy, PathProxy, PreferencesMenuItemProxy, RadioButtonsProxy, SliderProxy, SpinboxProxy, TabItemProxy, TableProxy, TextProxy, WindowProxy

Constant Summary collapse

KEYWORD_ALIASES = 
{
  'message_box'       => 'msg_box',
  'message_box_error' => 'msg_box_error',
}
BOOLEAN_PROPERTIES = 
%w[
  padded
  checked
  enabled toplevel visible
  read_only
  margined
  borderless fullscreen
  stretchy
]
STRING_PROPERTIES = 
%w[
  text
  title
]
TransformProxy =

alias

MatrixProxy

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from DataBindable

#data_bind, #data_bind_read, #data_bind_write, #data_binding_model_attribute_observer_registrations

Constructor Details

#initialize(keyword, parent, args, &block) ⇒ ControlProxy

Returns a new instance of ControlProxy.



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# File 'lib/glimmer/libui/control_proxy.rb', line 132

def initialize(keyword, parent, args, &block)
  @keyword = keyword
  @parent_proxy = parent
  @args = args
  @block = block
  @enabled = true
  build_control
  post_add_content if @block.nil?
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args, &block) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 260

def method_missing(method_name, *args, &block)
  if respond_to_libui?(method_name, *args, &block)
    send_to_libui(method_name, *args, &block)
  elsif append_properties.include?(method_name.to_s) ||
      append_properties.include?(method_name.to_s.sub(/(=|\?)$/, ''))
    append_property(method_name, *args)
  elsif can_handle_listener?(method_name.to_s)
    handle_listener(method_name.to_s, &block)
  else
    super
  end
end

Instance Attribute Details

#args ⇒ Object (readonly)

libui returns the contained LibUI object



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# File 'lib/glimmer/libui/control_proxy.rb', line 129

def args
  @args
end

#block ⇒ Object (readonly)

libui returns the contained LibUI object



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# File 'lib/glimmer/libui/control_proxy.rb', line 129

def block
  @block
end

#content_added ⇒ Object (readonly) Also known as: content_added?

libui returns the contained LibUI object



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# File 'lib/glimmer/libui/control_proxy.rb', line 129

def content_added
  @content_added
end

#keyword ⇒ Object (readonly)

libui returns the contained LibUI object



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# File 'lib/glimmer/libui/control_proxy.rb', line 129

def keyword
  @keyword
end

#libui ⇒ Object (readonly)

libui returns the contained LibUI object



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# File 'lib/glimmer/libui/control_proxy.rb', line 129

def libui
  @libui
end

#parent_proxy ⇒ Object (readonly)

libui returns the contained LibUI object



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# File 'lib/glimmer/libui/control_proxy.rb', line 129

def parent_proxy
  @parent_proxy
end

Class Method Details

.constant_symbol(keyword) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 67

def constant_symbol(keyword)
  "#{keyword.camelcase(:upper)}Proxy".to_sym
end

.control_proxies ⇒ Object

autosave all controls in this array to avoid garbage collection



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# File 'lib/glimmer/libui/control_proxy.rb', line 46

def control_proxies
  @@control_proxies = [] unless defined?(@@control_proxies)
  @@control_proxies
end

.control_proxy_class(keyword) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 41

def control_proxy_class(keyword)
  descendant_keyword_constant_map[keyword] || ControlProxy
end

.create(keyword, parent, args, &block) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 37

def create(keyword, parent, args, &block)
  control_proxy_class(keyword).new(keyword, parent, args, &block).tap {|c| control_proxies << c}
end

.descendant_keyword_constant_map ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 75

def descendant_keyword_constant_map
  @descendant_keyword_constant_map ||= add_aliases_to_keyword_constant_map(map_descendant_keyword_constants_for(self))
end

.exists?(keyword) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/libui/control_proxy.rb', line 31

def exists?(keyword)
  ::LibUI.respond_to?("new_#{keyword}") or
    ::LibUI.respond_to?(keyword) or
    descendant_keyword_constant_map.keys.include?(keyword)
end

.image_proxies ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 59

def image_proxies
  control_proxies.select {|c| c.keyword == 'image' }
end

.keyword(constant_symbol) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 71

def keyword(constant_symbol)
  constant_symbol.to_s.underscore.sub(/_proxy$/, '')
end

.main_window_proxy ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 51

def main_window_proxy
  control_proxies.find {|c| c.is_a?(WindowProxy)}
end

.map_descendant_keyword_constants_for(klass, accumulator: {}) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 84

def map_descendant_keyword_constants_for(klass, accumulator: {})
  klass.constants.map do |constant_symbol|
    [constant_symbol, klass.const_get(constant_symbol)]
  end.select do |constant_symbol, constant|
    constant.is_a?(Module) && !accumulator.values.include?(constant)
  end.each do |constant_symbol, constant|
    accumulator[keyword(constant_symbol)] = constant
    map_descendant_keyword_constants_for(constant, accumulator: accumulator)
  end
  accumulator
end

.menu_proxies ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 55

def menu_proxies
  control_proxies.select {|c| c.keyword == 'menu' }
end

.new_control(keyword, args) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 63

def new_control(keyword, args)
  ::LibUI.send("new_#{keyword}", *args)
end

.reset_descendant_keyword_constant_map ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 79

def reset_descendant_keyword_constant_map
  @descendant_keyword_constant_map = nil
  descendant_keyword_constant_map
end

Instance Method Details

#append_properties ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 309

def append_properties
  @parent_proxy&.class&.constants&.include?(:APPEND_PROPERTIES) ? @parent_proxy.class::APPEND_PROPERTIES : []
end

#append_property(property, value = nil) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 313

def append_property(property, value = nil)
  property = property.to_s.sub(/(=|\?)$/, '')
  @append_property_hash ||= {}
  if value.nil?
    value = @append_property_hash[property]
    handle_string_property(property, handle_boolean_property(property, value))
  else
    value = Glimmer::LibUI.boolean_to_integer(value) if BOOLEAN_PROPERTIES.include?(property) && (value.is_a?(TrueClass) || value.is_a?(FalseClass))
    @append_property_hash[property] = value
  end
end

#can_handle_listener?(listener_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/libui/control_proxy.rb', line 163

def can_handle_listener?(listener_name)
  ::LibUI.respond_to?("#{libui_api_keyword}_#{listener_name}") ||
    ::LibUI.respond_to?("control_#{listener_name}") ||
    has_custom_listener?(listener_name)
end

#content(&block) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 383

def content(&block)
  Glimmer::DSL::Engine.add_content(self, Glimmer::DSL::Libui::ControlExpression.new, @keyword, {post_add_content: @content_added}, &block)
end

#custom_listener_name_aliases ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 208

def custom_listener_name_aliases
  self.class.constants.include?(:CUSTOM_LISTENER_NAME_ALIASES) ? self.class::CUSTOM_LISTENER_NAME_ALIASES : {}
end

#custom_listener_names ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 204

def custom_listener_names
  self.class.constants.include?(:CUSTOM_LISTENER_NAMES) ? self.class::CUSTOM_LISTENER_NAMES : []
end

#default_destroy ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 345

def default_destroy
  deregister_all_custom_listeners
  send_to_libui('destroy')
  ControlProxy.control_proxies.delete(self)
end

#deregister_all_custom_listeners ⇒ Object

deregisters all custom listeners except on_destroy, which can only be deregistered after destruction of a control, using deregister_custom_listeners



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# File 'lib/glimmer/libui/control_proxy.rb', line 236

def deregister_all_custom_listeners
  (custom_listener_names - ['on_destroy']).each { |listener_name| deregister_custom_listeners(listener_name) }
end

#deregister_custom_listeners(listener_name) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 231

def deregister_custom_listeners(listener_name)
  handle_custom_listener(listener_name).clear
end

#destroy ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 329

def destroy
  # TODO exclude menus from this initial return
  return if !is_a?(ControlProxy::WindowProxy) && ControlProxy.main_window_proxy&.destroying?
  data_binding_model_attribute_observer_registrations.each(&:deregister)
  if parent_proxy.nil?
    default_destroy
  else
    parent_proxy.destroy_child(self)
  end
end

#destroy_child(child) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 340

def destroy_child(child)
  child.default_destroy
  children.delete(child)
end

#enabled(value = nil) ⇒ Object Also known as: enabled?, set_enabled, enabled= 



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# File 'lib/glimmer/libui/control_proxy.rb', line 351

def enabled(value = nil)
  if value.nil?
    @enabled
  elsif value != @enabled
    @enabled = value == 1 || value
    if value == 1 || value
      send_to_libui('enable')
    else
      send_to_libui('disable')
    end
  end
end

#handle_custom_listener(listener_name, &listener) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 212

def handle_custom_listener(listener_name, &listener)
  listener_name = listener_name.to_s
  listener_name = custom_listener_name_aliases.stringify_keys[listener_name] || listener_name
  instance_variable_name = "@#{listener_name}_procs" # TODO ensure clearing custom listeners on destroy of a control
  instance_variable_set(instance_variable_name, []) if instance_variable_get(instance_variable_name).nil?
  if listener.nil?
    instance_variable_get(instance_variable_name)
  else
    instance_variable_get(instance_variable_name) << listener
    listener
  end
end

#handle_listener(listener_name, &listener) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 169

def handle_listener(listener_name, &listener)
  # replace first listener argument (control libui pointer) with actual Ruby libui object
  safe_listener = Proc.new { |*args| listener.call(self, *args[1..-1]) }
  if ::LibUI.respond_to?("#{libui_api_keyword}_#{listener_name}")
    if listeners[listener_name].nil?
      ::LibUI.send("#{libui_api_keyword}_#{listener_name}", libui) do |*args|
        listeners_for(listener_name).map { |listener| listener.call(*args) }.last
      end
    end
    listeners_for(listener_name) << safe_listener
  elsif ::LibUI.respond_to?("control_#{listener_name}")
    if listeners[listener_name].nil?
      ::LibUI.send("control_#{listener_name}", libui) do |*args|
        listeners_for(listener_name).map { |listener| listener.call(*args) }.last
      end
    end
    listeners_for(listener_name) << safe_listener
  elsif has_custom_listener?(listener_name)
    handle_custom_listener(listener_name, &listener)
  end
end

#has_custom_listener?(listener_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/libui/control_proxy.rb', line 199

def has_custom_listener?(listener_name)
  listener_name = listener_name.to_s
  custom_listener_names.include?(listener_name) || custom_listener_name_aliases.stringify_keys.keys.include?(listener_name)
end

#libui_api_keyword ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 325

def libui_api_keyword
  @keyword
end

#listeners ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 191

def listeners
  @listeners ||= {}
end

#listeners_for(listener_name) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 195

def listeners_for(listener_name)
  listeners[listener_name] ||= []
end

#notify_custom_listeners(listener_name, *args) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 225

def notify_custom_listeners(listener_name, *args)
  handle_custom_listener(listener_name).map do |listener|
    listener.call(*args)
  end
end

#post_add_content ⇒ Object

Subclasses may override to perform post add_content work (normally must call super)



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# File 'lib/glimmer/libui/control_proxy.rb', line 143

def post_add_content
  unless @content_added
    @parent_proxy&.post_initialize_child(self)
    @content_added = true
  end
end

#post_initialize_child(child) ⇒ Object

Subclasses may override to perform post initialization work on an added child



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# File 'lib/glimmer/libui/control_proxy.rb', line 151

def post_initialize_child(child)
  # No Op by default
end

#respond_to?(method_name, *args, &block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/libui/control_proxy.rb', line 240

def respond_to?(method_name, *args, &block)
  respond_to_libui?(method_name, *args, &block) ||
    (
      append_properties.include?(method_name.to_s) ||
      (append_properties.include?(method_name.to_s.sub(/\?$/, '')) && BOOLEAN_PROPERTIES.include?(method_name.to_s.sub(/\?$/, ''))) ||
      append_properties.include?(method_name.to_s.sub(/=$/, ''))
    ) ||
    can_handle_listener?(method_name.to_s) ||
    super(method_name, true)
end

#respond_to_libui?(method_name, *args, &block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/glimmer/libui/control_proxy.rb', line 251

def respond_to_libui?(method_name, *args, &block)
  ::LibUI.respond_to?("control_#{method_name}") or
    (::LibUI.respond_to?("control_#{method_name.to_s.sub(/\?$/, '')}") && BOOLEAN_PROPERTIES.include?(method_name.to_s.sub(/\?$/, '')) ) or
    ::LibUI.respond_to?("control_set_#{method_name.to_s.sub(/=$/, '')}") or
    ::LibUI.respond_to?("#{libui_api_keyword}_#{method_name}") or
    (::LibUI.respond_to?("#{libui_api_keyword}_#{method_name.to_s.sub(/\?$/, '')}") && BOOLEAN_PROPERTIES.include?(method_name.to_s.sub(/\?$/, '')) ) or
    ::LibUI.respond_to?("#{libui_api_keyword}_set_#{method_name.to_s.sub(/=$/, '')}")
end

#send_to_libui(method_name, *args, &block) ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 273

def send_to_libui(method_name, *args, &block)
  if ::LibUI.respond_to?("#{libui_api_keyword}_#{method_name.to_s.sub(/\?$/, '')}") && args.empty?
    property = method_name.to_s.sub(/\?$/, '')
    value = ::LibUI.send("#{libui_api_keyword}_#{property}", libui, *args)
    handle_string_property(property, handle_boolean_property(property, value))
  elsif ::LibUI.respond_to?("#{libui_api_keyword}_get_#{method_name.to_s.sub(/\?$/, '')}") && args.empty?
    property = method_name.to_s.sub(/\?$/, '')
    value = ::LibUI.send("#{libui_api_keyword}_get_#{property}", libui, *args)
    handle_string_property(property, handle_boolean_property(property, value))
  elsif ::LibUI.respond_to?("#{libui_api_keyword}_set_#{method_name.to_s.sub(/=$/, '')}") && !args.empty?
    property = method_name.to_s.sub(/=$/, '')
    args[0] = Glimmer::LibUI.boolean_to_integer(args.first) if BOOLEAN_PROPERTIES.include?(property) && (args.first.is_a?(TrueClass) || args.first.is_a?(FalseClass))
    args[0] = '' if STRING_PROPERTIES.include?(property) && args.first == nil
    if property.to_s == 'checked'
      current_value = Glimmer::LibUI.integer_to_boolean(::LibUI.send("#{libui_api_keyword}_checked", libui), allow_nil: false)
      new_value = Glimmer::LibUI.integer_to_boolean(args[0], allow_nil: false)
      ::LibUI.send("#{libui_api_keyword}_set_#{property}", libui, *args) if new_value != current_value
    else
      ::LibUI.send("#{libui_api_keyword}_set_#{property}", libui, *args)
    end
  elsif ::LibUI.respond_to?("#{libui_api_keyword}_#{method_name}") && !args.empty?
    ::LibUI.send("#{libui_api_keyword}_#{method_name}", libui, *args)
  elsif ::LibUI.respond_to?("control_#{method_name.to_s.sub(/\?$/, '')}") && args.empty?
    property = method_name.to_s.sub(/\?$/, '')
    value = ::LibUI.send("control_#{property}", libui, *args)
    handle_string_property(property, handle_boolean_property(property, value))
  elsif ::LibUI.respond_to?("control_set_#{method_name.to_s.sub(/=$/, '')}")
    property = method_name.to_s.sub(/=$/, '')
    args[0] = Glimmer::LibUI.boolean_to_integer(args.first) if BOOLEAN_PROPERTIES.include?(property) && (args.first.is_a?(TrueClass) || args.first.is_a?(FalseClass))
    args[0] = '' if STRING_PROPERTIES.include?(property) && args.first == nil
    ::LibUI.send("control_set_#{method_name.to_s.sub(/=$/, '')}", libui, *args)
  elsif ::LibUI.respond_to?("control_#{method_name}") && !args.empty?
    ::LibUI.send("control_#{method_name}", libui, *args)
  end
end

#visible(value = nil) ⇒ Object Also known as: visible?, set_visible, visible= 



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# File 'lib/glimmer/libui/control_proxy.rb', line 367

def visible(value = nil)
  current_value = send_to_libui('visible')
  if value.nil?
    current_value
  elsif value != current_value
    if value == 1 || value
      send_to_libui('show')
    else
      send_to_libui('hide')
    end
  end
end

#window_proxy ⇒ Object 



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# File 'lib/glimmer/libui/control_proxy.rb', line 155

def window_proxy
  found_proxy = self
  until found_proxy.nil? || found_proxy.is_a?(WindowProxy)
    found_proxy = found_proxy.parent_proxy
  end
  found_proxy
end