Module: Ayril::XMLElement::ElementManipulation

Included in:
Ayril::XMLElement
Defined in:
lib/ayril/xml_element/element_manipulation.rb

Instance Method Summary collapse

Instance Method Details

#append(e) ⇒ Object 



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# File 'lib/ayril/xml_element/element_manipulation.rb', line 58

def append(e) self.insert :bottom => e end

#identify ⇒ Object 



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# File 'lib/ayril/xml_element/element_manipulation.rb', line 74

def identify
  id = self.read_attribute "id"
  return id unless id.nil?
  begin
    id = "anonymous_element_#{XMLElement::id_counter += 1}"
  end while self.rootDocument.select("##{id}").any?
  self.write_attribute "id", id
  id
end

#insert(insertions) ⇒ Object 



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# File 'lib/ayril/xml_element/element_manipulation.rb', line 24

def insert(insertions)
  insertions = { :bottom => insertions } if insertions.kind_of? String or
    insertions.kind_of? Integer or insertions.kind_of? XMLElement or 
    (insertions.respond_to? :to_element or insertions.respond_to? :to_html)

  insertions.each do |position, content|
    position.downcase! if position.kind_of? String
    insert = {
      :before => lambda { |element, node|
        element.parent.insertChild node, atIndex: element.index
      },
      :top => lambda { |element, node|
        element.insertChild node, atIndex: 0
      },
      :bottom => lambda { |element, node|
        element.addChild node
      },
      :after => lambda { |element, node|
        element.parent.insertChild node, atIndex: element.index + 1
      }
    }[position = position.to_sym]

    content = content.to_element if content.respond_to? :to_element
    (insert.call(self, content); next) if content.kind_of? XMLElement

    content = content.respond_to?(:to_html) ? content.to_html : content.to_s
    children = XMLElement.alloc.initWithXMLString("<root>#{content}</root>", error: nil).children

    children.reverse! if position == :top or position == :after
    children.each { |child| child.detach; insert.call self, child }
  end
  self
end

#prepend(e) ⇒ Object 



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# File 'lib/ayril/xml_element/element_manipulation.rb', line 59

def prepend(e) self.insert :top => e end

#wrap(wrapper = nil, attributes = {}) ⇒ Object 



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# File 'lib/ayril/xml_element/element_manipulation.rb', line 61

def wrap(wrapper=nil, attributes={})
  if wrapper.kind_of? XMLElement
    wrapper.write_attribute attributes
  elsif wrapper.kind_of? String
    wrapper = XMLElement.new wrapper, attributes
  else
    wrapper = XMLElement.new 'div', attributes
  end
  self.replace wrapper if self.parent
  wrapper.addChild self
  wrapper
end