Class: Hexp::CssSelector::Attribute

Inherits:

Object

• Object
• Hexp::CssSelector::Attribute

show all

Defined in:

lib/hexp/css_selector.rb

Overview

Instance Attribute Summary (collapse)

• - (Object) flags readonly

  Returns the value of attribute flags.

• - (Object) name readonly

  Returns the value of attribute name.

• - (Object) namespace readonly

  Returns the value of attribute namespace.

• - (Object) operator readonly

  Returns the value of attribute operator.

• - (Object) value readonly

  Returns the value of attribute value.

Instance Method Summary (collapse)

• - (Attribute) initialize(name, namespace, operator, value, flags) constructor

  A new instance of Attribute.

• - (Object) inspect
• - (Boolean) matches?(element)

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# File 'lib/hexp/css_selector.rb', line 164

def initialize(name, namespace, operator, value, flags)
  @name = name.freeze
  @namespace = namespace.freeze
  @operator = operator.freeze
  @value = value.freeze
  @flag = flags.freeze
end

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# File 'lib/hexp/css_selector.rb', line 162

def flags
  @flags
end

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# File 'lib/hexp/css_selector.rb', line 162

def name
  @name
end

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# File 'lib/hexp/css_selector.rb', line 162

def namespace
  @namespace
end

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# File 'lib/hexp/css_selector.rb', line 162

def operator
  @operator
end

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# File 'lib/hexp/css_selector.rb', line 162

def value
  @value
end

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# File 'lib/hexp/css_selector.rb', line 172

def inspect
  "<#{self.class.name.split('::').last} name=#{name} namespace=#{namespace.inspect} operator=#{operator.inspect} value=#{value.inspect} flags=#{flags.inspect}>"
end

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# File 'lib/hexp/css_selector.rb', line 176

def matches?(element)
  return false unless element[name]
  attribute = element[name]

  case operator
    # CSS 2
  when nil
    true
  when '='  # exact match
    attribute == value
  when '~=' # space separated list contains
    attribute.split(' ').include?(value)
  when '|=' # equal to, or starts with followed by a dash
    attribute =~ /\A#{Regexp.escape(value)}(-|\z)/

    # CSS 3
  when '^=' # starts with
    attribute.index(value) == 0
  when '$=' # ends with
    attribute =~ /#{Regexp.escape(value)}\z/
  when '*=' # contains
    !!(attribute =~ /#{Regexp.escape(value)}/)

  else
    raise "Unknown operator : #{operator}"
  end
end