Class: Olelo::Menu

Inherits:
Object show all
Includes:
Enumerable, Util
Defined in:
lib/olelo/menu.rb

Direct Known Subclasses

MenuItem

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Util

#check, #decode64, #deep_copy, #encode64, #escape, #escape_html, #escape_javascript, included, #md5, #no_cache?, #sha256, #titlecase, #truncate, #unescape, #unescape_backslash, #unescape_html, #valid_xml_chars?

Constructor Details

#initialize(name) ⇒ Menu

Returns a new instance of Menu.



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# File 'lib/olelo/menu.rb', line 7

def initialize(name)
  @name = name.to_sym
  @items = {}
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/olelo/menu.rb', line 5

def name
  @name
end

Instance Method Details

#<<(item) ⇒ Object

Raises:

  • (TypeError) 


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# File 'lib/olelo/menu.rb', line 35

def <<(item)
  raise TypeError, "Only items allowed" unless MenuItem === item
  raise "Item #{item.name} exists already in #{path.join('/')}" if @items.include?(item.name)
  item.parent = self
  @items[item.name] = item
end

#[](name) ⇒ Object 



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# File 'lib/olelo/menu.rb', line 16

def [](name)
  path = path.to_s
  i = path.index('/')
  if i
    item = @items[path[0...i]]
    item[path[i+1..-1]] if item
  else
    @items[name.to_sym]
  end
end

#append(items) ⇒ Object 



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# File 'lib/olelo/menu.rb', line 31

def append(items)
  items.each {|item| self << item }
end

#build_menu ⇒ Object 



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# File 'lib/olelo/menu.rb', line 61

def build_menu
  empty? ? '' : %{<ul id="menu-#{html_id}">#{map(&:build_menu).join}</ul>}
end

#clear ⇒ Object 



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# File 'lib/olelo/menu.rb', line 46

def clear
  @items.clear
end

#each(&block) ⇒ Object 



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# File 'lib/olelo/menu.rb', line 12

def each(&block)
  @items.each_value(&block)
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/olelo/menu.rb', line 42

def empty?
  @items.empty?
end

#html_id ⇒ Object 



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# File 'lib/olelo/menu.rb', line 69

def html_id
  escape_html path.join('-')
end

#item(name, options = {}) ⇒ Object 



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# File 'lib/olelo/menu.rb', line 27

def item(name, options = {})
  self << MenuItem.new(name, options)
end

#path ⇒ Object 



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# File 'lib/olelo/menu.rb', line 73

def path
  [name]
end

#remove(name) ⇒ Object 



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# File 'lib/olelo/menu.rb', line 50

def remove(name)
  path = name.to_s
  i = path.index('/')
  if i
    item = @items[path[0...i]]
    item.remove(path[i+1..-1]) if item
  else
    @items.delete(name.to_sym)
  end
end

#to_html ⇒ Object 



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# File 'lib/olelo/menu.rb', line 65

def to_html
  build_menu.html_safe
end