Class: Niente::DisplayService

Inherits:
Shoes::DisplayService show all
Includes:
Shoes::Log
Defined in:
lacci/lib/scarpe/niente/display_service.rb

Overview

This is a "null" DisplayService, doing as little as it can get away with.

Constant Summary

Constants included from Shoes::Log

Shoes::Log::DEFAULT_COMPONENT, Shoes::Log::DEFAULT_DEBUG_LOG_CONFIG, Shoes::Log::DEFAULT_LOG_CONFIG

Class Attribute Summary collapse

Instance Method Summary collapse

Methods included from Shoes::Log

configure_logger, #log_init, logger

Methods inherited from Shoes::DisplayService

dispatch_event, display_service, full_reset!, #query_display_drawable_for, set_display_service_class, #set_drawable_pairing, subscribe_to_event, unsub_from_events

Constructor Details

#initialize ⇒ DisplayService 



13
14
15
16
17
18
19
20
21
22
 
# File 'lacci/lib/scarpe/niente/display_service.rb', line 13

def initialize
  if Niente::DisplayService.instance
    raise Shoes::SingletonError, "ERROR! This is meant to be a singleton!"
  end

  Niente::DisplayService.instance = self

  log_init("Niente::DisplayService")
  super()
end

Class Attribute Details

.instance ⇒ Object

Returns the value of attribute instance.



10
11
12
 
# File 'lacci/lib/scarpe/niente/display_service.rb', line 10

def instance
  @instance
end

Instance Method Details

#create_display_drawable_for(drawable_class_name, drawable_id, properties, parent_id:, is_widget:) ⇒ Webview::Drawable

Create a fake display drawable for a specific Shoes drawable, and pair it with the linkable ID for this Shoes drawable.



32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
 
# File 'lacci/lib/scarpe/niente/display_service.rb', line 32

def create_display_drawable_for(drawable_class_name, drawable_id, properties, parent_id:, is_widget:)
  existing = query_display_drawable_for(drawable_id, nil_ok: true)
  if existing
    @log.warn("There is already a display drawable for #{drawable_id.inspect}! Returning #{existing.class.name}.")
    return existing
  end

  if drawable_class_name == "App"
    @app = Niente::App.new(properties)
    set_drawable_pairing(drawable_id, @app)

    return @app
  end

  display_drawable = Niente::Drawable.new(properties)
  display_drawable.shoes_type = drawable_class_name
  set_drawable_pairing(drawable_id, display_drawable)

  # Nil parent is okay for DocumentRoot and TextDrawables, so we have to specify it.
  parent = DisplayService.instance.query_display_drawable_for(parent_id, nil_ok: true)
  display_drawable.set_parent(parent)

  return display_drawable
end

#destroy ⇒ void

This method returns an undefined value.

Destroy the display service and the app. Quit the process (eventually.)



60
61
62
63
 
# File 'lacci/lib/scarpe/niente/display_service.rb', line 60

def destroy
  @app.destroy
  DisplayService.instance = nil
end