Class: Niente::Drawable

Inherits:
Shoes::Linkable show all
Defined in:
lacci/lib/scarpe/niente/drawable.rb

Direct Known Subclasses

App

Instance Attribute Summary collapse

Attributes inherited from Shoes::Linkable

#linkable_id

Instance Method Summary collapse

Methods inherited from Shoes::Linkable

#bind_shoes_event, #send_self_event, #send_shoes_event, #unsub_all_shoes_events, #unsub_shoes_event

Constructor Details

#initialize(props) ⇒ Drawable

Returns a new instance of Drawable.



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 9

def initialize(props)
  @shoes_linkable_id = props.delete("shoes_linkable_id") || props.delete(:shoes_linkable_id)
  @data = props

  super(linkable_id: @shoes_linkable_id)

  # This should only be used for reparenting after a drawable was initially created.
  bind_shoes_event(event_name: "parent", target: shoes_linkable_id) do |new_parent_id|
    display_parent = DisplayService.instance.query_display_drawable_for(new_parent_id)
    if @parent != display_parent
      set_parent(display_parent)
    end
  end

  # When Shoes drawables change properties, we get a change notification here
  bind_shoes_event(event_name: "prop_change", target: shoes_linkable_id) do |prop_changes|
    prop_changes.each do |k, v|
      instance_variable_set("@" + k, v)
    end
    properties_changed(prop_changes) if respond_to?(:properties_changed)
  end

  bind_shoes_event(event_name: "destroy", target: shoes_linkable_id) do
    set_parent(nil)
  end
end

Instance Attribute Details

#children ⇒ Object (readonly)

Returns the value of attribute children.



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 5

def children
  @children
end

#parent ⇒ Object (readonly)

Returns the value of attribute parent.



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 4

def parent
  @parent
end

#shoes_linkable_id ⇒ Object (readonly)

Returns the value of attribute shoes_linkable_id.



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 3

def shoes_linkable_id
  @shoes_linkable_id
end

#shoes_type ⇒ Object

Returns the value of attribute shoes_type.



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 7

def shoes_type
  @shoes_type
end

Instance Method Details

#add_child(child) ⇒ Object

Do not call directly, use set_parent



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 53

def add_child(child)
  @children ||= []
  @children << child
end

#remove_child(child) ⇒ Object

Do not call directly, use set_parent



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 43

def remove_child(child)
  @children ||= []
  unless @children.include?(child)
    STDERR.puts("remove_child: no such child(#{child.inspect}) for"\
      " parent(#{parent.inspect})!")
  end
  @children.delete(child)
end

#set_parent(new_parent) ⇒ Object 



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# File 'lacci/lib/scarpe/niente/drawable.rb', line 36

def set_parent(new_parent)
  @parent&.remove_child(self)
  new_parent&.add_child(self)
  @parent = new_parent
end