Class: Trestle::Navigation

Inherits:
Object
  • Object
show all
Extended by:
ActiveSupport::Autoload
Defined in:
lib/trestle/navigation.rb,
lib/trestle/navigation/item.rb,
lib/trestle/navigation/block.rb,
lib/trestle/navigation/group.rb

Defined Under Namespace

Classes: Block, Group, Item, NullGroup

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(items) ⇒ Navigation

Returns a new instance of Navigation.



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# File 'lib/trestle/navigation.rb', line 12

def initialize(items)
  @items = items
end

Instance Attribute Details

#items ⇒ Object (readonly)

Returns the value of attribute items.



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# File 'lib/trestle/navigation.rb', line 10

def items
  @items
end

Class Method Details

.build(blocks) ⇒ Object 



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# File 'lib/trestle/navigation.rb', line 33

def self.build(blocks)
  new(blocks.map(&:items).flatten)
end

Instance Method Details

#by_group ⇒ Object 



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# File 'lib/trestle/navigation.rb', line 16

def by_group
  Hash[stable_sort(items.group_by(&:group)).map { |group, items| [group, stable_sort(items)] }]
end

#each(&block) ⇒ Object 



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# File 'lib/trestle/navigation.rb', line 20

def each(&block)
  by_group.each(&block)
end

#first ⇒ Object 



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# File 'lib/trestle/navigation.rb', line 24

def first
  sorted = by_group.values
  sorted.first.first if sorted.any?
end

#visible(context) ⇒ Object 



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# File 'lib/trestle/navigation.rb', line 29

def visible(context)
  self.class.new(items.select { |item| item.visible?(context) })
end