Class: Potty::Application

Inherits:
Object
  • Object
show all
Defined in:
lib/potty/application.rb

Overview

Main application wrapper: owns the view stack, the tick loop, and a Surface (the render target). Mode picks the surface:

:curses (default) — full-screen curses display, input via getch.
:inline           — N lines redrawn in place under the cursor via ANSI,
                     no init_screen, terminal stays cooked (input
                     ignored; host drives quit). Good for progress UIs.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mode: :curses, lines: nil, theme: nil, out: $stdout, listen: false, input: $stdin) ⇒ Application

Returns a new instance of Application.



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# File 'lib/potty/application.rb', line 28

def initialize(mode: :curses, lines: nil, theme: nil, out: $stdout, listen: false, input: $stdin)
  @view_stack = []
  @running = false
  @theme = theme || Theme.new
  @mode = mode
  @lines = lines
  @out = out
  @listen = listen
  @input = input
  # Kept for back-compat: curses-mode consumers that draw straight to
  # window_manager.stdscr or read its dimensions.
  @window_manager = (mode == :curses ? WindowManager.new : nil)
  @surface = nil
  @tick_interval = nil
end

Instance Attribute Details

#surface ⇒ Object (readonly)

Returns the value of attribute surface.



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# File 'lib/potty/application.rb', line 20

def surface
  @surface
end

#theme ⇒ Object (readonly)

Returns the value of attribute theme.



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# File 'lib/potty/application.rb', line 20

def theme
  @theme
end

#tick_interval ⇒ Object

When set (milliseconds), the event loop wakes every interval even without input, advancing time-based widgets (Animator, Countdown). Leave nil for a purely blocking, input-driven loop (the default). ~33-50ms gives smooth animation. Required for :inline.



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# File 'lib/potty/application.rb', line 26

def tick_interval
  @tick_interval
end

#view_stack ⇒ Object (readonly)

Returns the value of attribute view_stack.



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# File 'lib/potty/application.rb', line 20

def view_stack
  @view_stack
end

#window_manager ⇒ Object (readonly)

Returns the value of attribute window_manager.



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# File 'lib/potty/application.rb', line 20

def window_manager
  @window_manager
end

Instance Method Details

#pop_view ⇒ Object 



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# File 'lib/potty/application.rb', line 63

def pop_view
  return if @view_stack.size <= 1

  view = @view_stack.pop
  view.deactivate
  @view_stack.last&.activate(self)
  refresh_all
end

#push_view(view) ⇒ Object

View navigation



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# File 'lib/potty/application.rb', line 56

def push_view(view)
  @view_stack.last&.deactivate
  @view_stack.push(view)
  view.activate(self)
  refresh_all
end

#quit ⇒ Object 



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# File 'lib/potty/application.rb', line 72

def quit
  @running = false
end

#refresh_all ⇒ Object Also known as: redraw 



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# File 'lib/potty/application.rb', line 76

def refresh_all
  @surface.erase
  current_view&.render
  @surface.present
end

#resume ⇒ Object

Resume after suspension.



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# File 'lib/potty/application.rb', line 97

def resume
  @surface&.start
  current_view&.activate(self)
  refresh_all
end

#run(root_view) ⇒ Object

Start the application with root view



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# File 'lib/potty/application.rb', line 45

def run(root_view)
  @surface = build_surface
  @surface.start
  push_view(root_view)
  @running = true
  event_loop
ensure
  @surface&.finalize
end

#suspend ⇒ Object

Suspend the surface for an external process (e.g., shelling out).



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# File 'lib/potty/application.rb', line 92

def suspend
  @surface&.finalize
end

#tick ⇒ Object

Advance time-based widgets and repaint. Called automatically each event-loop frame; also public so a host that drives its own loop can pump animation/countdowns itself.



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# File 'lib/potty/application.rb', line 86

def tick
  current_view&.tick(Time.now)
  refresh_all
end