TOL about new layout method and find_or_append feature for RMQ/RedPotion

gistfile1.rb

class MainScreen < PM::Screen
  title "My Screen"
  layout MyLayout
  stylesheet MainScreenStylesheet
  
  def on_load
    stylesheet.layout
    set_state user_logged_in: false, first_name: "n/a", last_name: "n/a"
  end
  
  def something_happened
    set_state user_logged_in: true, first_name: user.firstt_name, last_name: user.last_name
  end
end
 
class MainScreenStylesheet < ApplicationStylesheet
  def setup
    # Add stylesheet specific setup stuff here.
    # Add application specific setup stuff in application_stylesheet.rb
  end

  def layout
    first_label_top = screen.state[:user_logged_in] ? 20 : 60

    find_or_append(UILabel, :first_name_label).layout(l: 5, w: 10, t: first_label_top, h: 20)
    find_or_append(UILabel, :first_name).layout(l: 5, w: 10, bp: 20, h: 20)

    find_or_append(UILabel, :last_name_label).layout(l: 5, w: 10, bp: 40, h: 20)
    find_or_append(UILabel, :last_name).layout(l: 5, w: 10, bp: 20, h: 20)
  end

  def root_view(st)
    st.background_color = color.white
  end

  def first_name_label(st)
  end

  def first_name(st)
  end

  def last_name_label(st)
  end

  def last_name(st)
  end
end