# frozen_string_literal: true
class Shoes
  module Swt
    class Slot
      include Common::Container
      include Common::Clickable
      include Common::Visibility

      attr_reader :real, :dsl, :parent, :app

      def initialize(dsl, parent)
        @dsl = dsl
        @parent = parent
        @real = parent.real

        @app = @parent.app
      end

      # needed by Layouter code, but slots are no physical elements so they
      def update_position
      end

      # This is more like a temporary work around until slots have a real
      # backend representations that can just hide their contents all together
      # I decided to put this logic in the backend since the hiding is a backend
      # responsibility, although this is more DSL code
      # #904 #905
      def update_visibility
        # Only alter contents on a visibility change
        return if @last_hidden_state == dsl.hidden?

        @last_hidden_state = dsl.hidden?

        if @last_hidden_state
          dsl.contents.each(&:hide)
        else
          dsl.contents.each(&:show)
        end
      end

      def redraw_target
        @dsl
      end

      def remove
        app.click_listener.remove_listeners_for(dsl)
      end
    end

    class Flow < Slot; end
    class Stack < Slot; end
    class Widget < Slot; end
  end
end