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require "rexml/node"

module REXML
  ##
  # A Child object is something contained by a parent, and this class
  # contains methods to support that.  Most user code will not use this
  # class directly.
  class Child
    include Node
    attr_reader :parent         # The Parent of this object

    # Constructor.  Any inheritors of this class should call super to make
    # sure this method is called.
    # parent::
    #   if supplied, the parent of this child will be set to the
    #   supplied value, and self will be added to the parent
    def initialize( parent = nil )
      @parent = nil
      # Declare @parent, but don't define it.  The next line sets the
      # parent.
      parent.add( self ) if parent
    end

    # Replaces this object with another object.  Basically, calls
    # Parent.replace_child
    #
    # Returns:: self
    def replace_with( child )
      @parent.replace_child( self, child )
      self
    end

    # Removes this child from the parent.
    #
    # Returns:: self
    def remove
      unless @parent.nil?
        @parent.delete self
      end
      self
    end

    # Sets the parent of this child to the supplied argument.
    #
    # other::
    #   Must be a Parent object.  If this object is the same object as the
    #   existing parent of this child, no action is taken. Otherwise, this
    #   child is removed from the current parent (if one exists), and is added
    #   to the new parent.
    # Returns:: The parent added
    def parent=( other )
      return @parent if @parent == other
      @parent.delete self if defined? @parent and @parent
      @parent = other
    end

    alias :next_sibling :next_sibling_node
    alias :previous_sibling :previous_sibling_node

    # Sets the next sibling of this child.  This can be used to insert a child
    # after some other child.
    #  a = Element.new("a")
    #  b = a.add_element("b")
    #  c = Element.new("c")
    #  b.next_sibling = c
    #  # => <a><b/><c/></a>
    def next_sibling=( other )
      parent.insert_after self, other
    end

    # Sets the previous sibling of this child.  This can be used to insert a
    # child before some other child.
    #  a = Element.new("a")
    #  b = a.add_element("b")
    #  c = Element.new("c")
    #  b.previous_sibling = c
    #  # => <a><b/><c/></a>
    def previous_sibling=(other)
      parent.insert_before self, other
    end

    # Returns:: the document this child belongs to, or nil if this child
    # belongs to no document
    def document
      return parent.document unless parent.nil?
      nil
    end

    # This doesn't yet handle encodings
    def bytes
      document.encoding

      to_s
    end
  end
end

Filemanager

DIR : / usr/ share/ ruby/ rexml/
Name Type Size Permission Actions
dtd Folder 0755
formatters Folder 0755
light Folder 0755
parsers Folder 0755
validation Folder 0755
attlistdecl.rb File 1.89 KB 0644
attribute.rb File 5.39 KB 0644
cdata.rb File 1.54 KB 0644
child.rb File 2.63 KB 0644
comment.rb File 2.14 KB 0644
doctype.rb File 6.58 KB 0644
document.rb File 9.52 KB 0644
element.rb File 43.85 KB 0644
encoding.rb File 1.13 KB 0644
entity.rb File 5.53 KB 0644
functions.rb File 11.27 KB 0644
instruction.rb File 2.01 KB 0644
namespace.rb File 1.09 KB 0644
node.rb File 2.13 KB 0644
output.rb File 519 B 0644
parent.rb File 4.33 KB 0644
parseexception.rb File 1.22 KB 0644
quickpath.rb File 9.08 KB 0644
rexml.rb File 1.65 KB 0644
sax2listener.rb File 3.6 KB 0644
source.rb File 7.6 KB 0644
streamlistener.rb File 3.88 KB 0644
syncenumerator.rb File 685 B 0644
text.rb File 13.57 KB 0644
undefinednamespaceexception.rb File 210 B 0644
xmldecl.rb File 2.68 KB 0644
xmltokens.rb File 526 B 0644
xpath.rb File 3.31 KB 0644
xpath_parser.rb File 25.7 KB 0644