Class: ComponentNode

Inherits:
BaseNode show all
Includes:
Events
Defined in:
lib/volt/templates/targets/binding_document/component_node.rb

Overview

Component nodes contain an array of both HtmlNodes and ComponentNodes. Instead of providing a full DOM API, component nodes are the branch nodes and html nodes are the leafs. This is all we need to produce the html from templates outside of a normal dom.

Direct Known Subclasses

AttributeTarget

Instance Attribute Summary collapse

Attributes included from Events

#scope

Instance Method Summary collapse

Methods included from Events

#add_event_follower, #add_event_to_chains, #add_following, #all_listeners_for, #event_chain, #event_followers, #event_followings, #listeners, #on, #remove_event_follower, #remove_event_from_chains, #remove_following, #remove_listener, #trigger!, #trigger_by_scope!

Constructor Details

#initialize(binding_id = nil, parent = nil) ⇒ ComponentNode

Returns a new instance of ComponentNode.



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 12

def initialize(binding_id=nil, parent=nil)
  @nodes = []
  @binding_id = binding_id
  @parent = parent
  
  @change_listener = on('changed') do
    if @parent
      @parent.trigger!('changed')
    end
  end
end

Instance Attribute Details

#binding_id ⇒ Object

Returns the value of attribute binding_id.



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 11

def binding_id
  @binding_id
end

#nodes ⇒ Object

Returns the value of attribute nodes.



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 11

def nodes
  @nodes
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 11

def parent
  @parent
end

Instance Method Details

#<<(node) ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 64

def <<(node)
  @nodes << node
end

#find_by_binding_id(binding_id) ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 77

def find_by_binding_id(binding_id)
  if @binding_id == binding_id
    return self
  end
  
  @nodes.each do |node|
    if node.cur.is_a?(ComponentNode)
      val = node.find_by_binding_id(binding_id)
      return val if val
    end
  end
  
  return nil
end

#html=(html) ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 33

def html=(html)
  parts = html.split(/(\<\!\-\- \$\/?[0-9]+ \-\-\>)/).reject {|v| v == '' }

  # Clear current nodes
  @nodes = []
  
  current_node = self

  parts.each do |part|
    case part
    when /\<\!\-\- \$[0-9]+ \-\-\>/
      # Open
      binding_id = part.match(/\<\!\-\- \$([0-9]+) \-\-\>/)[1].to_i
    
      sub_node = ComponentNode.new(binding_id, current_node)
      current_node << sub_node
      current_node = sub_node
    when /\<\!\-\- \$\/[0-9]+ \-\-\>/
      # Close
      # binding_id = part.match(/\<\!\-\- \$\/([0-9]+) \-\-\>/)[1].to_i
    
      current_node = current_node.parent
    else
      # html string
      current_node << HtmlNode.new(part)
    end
  end
  
  trigger!('changed')
end

#inspect ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 109

def inspect
  "<ComponentNode:#{@binding_id} #{@nodes.inspect}>"
end

#remove ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 92

def remove
  @nodes = []
  
  trigger!('changed')
end

#remove_anchors ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 98

def remove_anchors
  raise "not implemented"

  @parent.nodes.delete(self)
      
  @change_listener.remove
  @change_listener = nil
  
  trigger!('changed')
end

#skip_current_queue_flush ⇒ Object

TODO: improve



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 25

def skip_current_queue_flush
  true
end

#text=(text) ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 29

def text=(text)
  self.html = text
end

#to_html ⇒ Object 



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# File 'lib/volt/templates/targets/binding_document/component_node.rb', line 68

def to_html
  str = []
  @nodes.each do |node|
    str << node.to_html
  end
  
  return str.join('')
end