Class: Charming::Focus

Inherits:
Object
  • Object
show all
Defined in:
lib/charming/focus.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(state) ⇒ Focus

Returns a new instance of Focus.



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# File 'lib/charming/focus.rb', line 12

def initialize(state)
  @state = state
end

Class Method Details

.for(session, controller_class) ⇒ Object 



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# File 'lib/charming/focus.rb', line 5

def self.for(session, controller_class)
  session[:focus_state] ||= {}
  key = controller_class.name
  session[:focus_state][key] ||= {scopes: []}
  new(session[:focus_state][key])
end

Instance Method Details

#current ⇒ Object 



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# File 'lib/charming/focus.rb', line 30

def current
  top && top[:current]
end

#cycle(direction = +1) ⇒ Object 



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# File 'lib/charming/focus.rb', line 44

def cycle(direction = +1)
  return if ring.empty?

  index = ring.index(current) || 0
  top[:current] = ring[(index + direction) % ring.length]
end

#define(slots) ⇒ Object 



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# File 'lib/charming/focus.rb', line 16

def define(slots)
  return if @state[:scopes].any? { |scope| scope[:origin] == :ring }

  @state[:scopes] << build_scope(slots, :ring)
end

#focus(slot) ⇒ Object 



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# File 'lib/charming/focus.rb', line 38

def focus(slot)
  return unless ring.include?(slot)

  top[:current] = slot
end

#focused?(slot) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/charming/focus.rb', line 51

def focused?(slot)
  current == slot
end

#pop_scope ⇒ Object 



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# File 'lib/charming/focus.rb', line 26

def pop_scope
  @state[:scopes].pop
end

#push_scope(slots, origin: :modal) ⇒ Object 



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# File 'lib/charming/focus.rb', line 22

def push_scope(slots, origin: :modal)
  @state[:scopes] << build_scope(slots, origin)
end

#ring ⇒ Object 



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# File 'lib/charming/focus.rb', line 34

def ring
  top ? top[:ring] : []
end