Class: Blather::XMPPNode

Inherits:
Niceogiri::XML::Node
  • Object
show all
Defined in:
lib/blather/xmpp_node.rb

Overview

Base XML Node All XML classes subclass XMPPNode it allows the addition of helpers

Direct Known Subclasses

Stanza, Stanza::DiscoInfo::Feature, Stanza::DiscoInfo::Identity, Stanza::DiscoItems::Item, Stanza::Iq::Roster::RosterItem, Stanza::Iq::S5b::StreamHost, Stanza::Iq::S5b::StreamHostUsed, Stanza::Iq::Si::Si, Stanza::Iq::Si::Si::Feature, Stanza::Iq::Si::Si::File, Stanza::Iq::Si::Si::Range, Stanza::Iq::Vcard::Vcard, Stanza::Message::Delay, Stanza::Message::MUCUser::InviteBase, Stanza::Presence::MUCUser::Item, Stanza::Presence::MUCUser::Status, Stanza::PubSubItem, Stanza::X, Stanza::X::Field, Stanza::X::Field::Option

Constant Summary

BASE_NAMES = 
%w[presence message iq].freeze
@@registrations = 
{}

Class Method Summary (collapse)

Instance Method Summary (collapse)

Class Method Details

+ (Class?) class_from_registration(name, ns = nil)

Find the class to use given the name and namespace of a stanza

Parameters:

  • name (#to_s) —

    the name to lookup

  • xmlns (String, nil) —

    the namespace the node belongs to

Returns:

  • (Class, nil) —

    the class appropriate for the name/ns combination



33
34
35
 
# File 'lib/blather/xmpp_node.rb', line 33

def self.class_from_registration(name, ns = nil)
  @@registrations[[name.to_s, ns]]
end

+ (Object) decorator_modules 



71
72
73
 
# File 'lib/blather/xmpp_node.rb', line 71

def self.decorator_modules
  [self::InstanceMethods]
end

+ (Object) import(node, *decorators)

Import an XML::Node to the appropriate class

Looks up the class the node should be then creates it based on the elements of the XML::Node

Parameters:

  • node (XML::Node) —

    the node to import

Returns:

  • the appropriate object based on the node name and namespace



43
44
45
46
47
48
49
50
51
 
# File 'lib/blather/xmpp_node.rb', line 43

def self.import(node, *decorators)
  ns = (node.namespace.href if node.namespace)
  klass = class_from_registration(node.element_name, ns)
  if klass && klass != self
    klass.import(node, *decorators)
  else
    new(node.element_name).decorate(*decorators).inherit(node)
  end
end

+ (Object) new(name = registered_name, doc = nil)

Create a new Node object

not provided one will be created

Parameters:

  • name (String, nil) (defaults to: registered_name) —

    the element name

  • doc (XML::Document, nil) (defaults to: nil) —

    the document to attach the node to. If

Returns:

  • a new object with the registered name and namespace



67
68
69
 
# File 'lib/blather/xmpp_node.rb', line 67

def self.new(name = registered_name, doc = nil)
  super name, doc, BASE_NAMES.include?(name.to_s) ? nil : self.registered_ns
end

+ (Object) parse(string)

Parse a string as XML and import to the appropriate class

Parameters:

  • string (String) —

    the string to parse

Returns:

  • the appropriate object based on the node name and namespace



57
58
59
 
# File 'lib/blather/xmpp_node.rb', line 57

def self.parse(string)
  import Nokogiri::XML(string).root
end

+ (Object) register(name, ns = nil)

Register a new stanza class to a name and/or namespace

This registers a namespace that is used when looking up the class name of the object to instantiate when a new stanza is received

Parameters:

  • name (#to_s) —

    the name of the node

  • ns (String, nil) (defaults to: nil) —

    the namespace the node belongs to



22
23
24
25
26
 
# File 'lib/blather/xmpp_node.rb', line 22

def self.register(name, ns = nil)
  self.registered_name = name.to_s
  self.registered_ns = ns
  @@registrations[[self.registered_name, self.registered_ns]] = self
end

Instance Method Details

- (Object) decorate(*decorators) 



75
76
77
78
79
80
81
82
83
84
 
# File 'lib/blather/xmpp_node.rb', line 75

def decorate(*decorators)
  decorators.each do |decorator|
    decorator.decorator_modules.each do |mod|
      extend mod
    end

    @handler_hierarchy.unshift decorator.handler_hierarchy.first
  end
  self
end

- (Object) to_stanza

Turn the object into a proper stanza

Returns:

  • a stanza object



89
90
91
 
# File 'lib/blather/xmpp_node.rb', line 89

def to_stanza
  self.class.import self
end