Class: Nav::Link

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ Link

Returns a new instance of Link.



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# File 'lib/rails_nav.rb', line 257

def initialize(*args, &block)
#
  @options =
    if args.last.is_a?(Hash)
      args.extract_options!.to_options!
    else
      {}
    end
#
  args.each{|arg| @nav = arg if arg.is_a?(Nav)}
  args.delete_if{|arg| arg.is_a?(Nav)}

  unless @nav
    @nav = Nav.new
    @nav.controller = Current.mock_controller
  end

#
  @content        = getopt!(:content){ args.shift || 'Slash' }
  @url            = getopt!(:url){ args.shift || {} }
  @pattern        = getopt!(:pattern){ args.shift || Link.default_active_pattern_for(@content) }
  @compute_active = getopt!(:active){ block || Link.default_active_block_for(@pattern) }
  @default        = getopt!(:default){ nil }

#
  @slug = Slug.for(@content, :join => '-')
  @already_computed_active = nil

  @config = Map.new
end

Instance Attribute Details

#active ⇒ Object

Returns the value of attribute active.



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# File 'lib/rails_nav.rb', line 251

def active
  @active
end

#args ⇒ Object

Returns the value of attribute args.



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# File 'lib/rails_nav.rb', line 244

def args
  @args
end

#compute_active ⇒ Object

Returns the value of attribute compute_active.



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# File 'lib/rails_nav.rb', line 250

def compute_active
  @compute_active
end

#config ⇒ Object

Returns the value of attribute config.



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# File 'lib/rails_nav.rb', line 255

def config
  @config
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/rails_nav.rb', line 247

def content
  @content
end

#controller ⇒ Object

Returns the value of attribute controller.



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# File 'lib/rails_nav.rb', line 246

def controller
  @controller
end

#default ⇒ Object

Returns the value of attribute default.



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# File 'lib/rails_nav.rb', line 252

def default
  @default
end

#nav ⇒ Object

Returns the value of attribute nav.



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# File 'lib/rails_nav.rb', line 243

def nav
  @nav
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/rails_nav.rb', line 245

def options
  @options
end

#pattern ⇒ Object

Returns the value of attribute pattern.



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# File 'lib/rails_nav.rb', line 249

def pattern
  @pattern
end

#slug ⇒ Object

Returns the value of attribute slug.



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# File 'lib/rails_nav.rb', line 254

def slug
  @slug
end

#weight ⇒ Object

Returns the value of attribute weight.



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# File 'lib/rails_nav.rb', line 253

def weight
  @weight
end

Class Method Details

.default_active_block_for(pattern) ⇒ Object 



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# File 'lib/rails_nav.rb', line 337

def Link.default_active_block_for(pattern)
  proc do |link|
    path_info = link.path_info
    depth = -1
    matched = false
    path_info.each{|path| depth += 1; break if(matched = path =~ pattern)}
    weight = matched ? depth : nil
  end
end

.default_active_pattern_for(content) ⇒ Object 



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# File 'lib/rails_nav.rb', line 332

def Link.default_active_pattern_for(content)
  path_info = Slug.for(content.to_s.split('/').first, :join => '[_-]*')
  %r/\b#{ path_info }\b/i
end

Instance Method Details

#compute_active! ⇒ Object 



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# File 'lib/rails_nav.rb', line 292

def compute_active!
  @active = 
    if @compute_active.respond_to?(:call)
      @nav.evaluate(@compute_active, link = self)
    else
      !!@compute_active
    end
ensure
  @already_computed_active = true
end

#default? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rails_nav.rb', line 307

def default?
  !!@default
end

#getopt!(key, &block) ⇒ Object 



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# File 'lib/rails_nav.rb', line 288

def getopt!(key, &block)
  @options.has_key?(key) ? @options.delete(key) : (block && block.call)
end

#inspect ⇒ Object 



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# File 'lib/rails_nav.rb', line 328

def inspect
  super
end

#to_s ⇒ Object 



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# File 'lib/rails_nav.rb', line 324

def to_s
  content.to_s
end

#url ⇒ Object Also known as: href 



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# File 'lib/rails_nav.rb', line 319

def url
  controller.send(:url_for, *@url)
end