Class: Wedge::DOM

Inherits:
Object show all
Includes:
Methods
Defined in:
lib/wedge/dom.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Methods

#client?, included, #server?

Constructor Details

#initialize(html) ⇒ DOM

Returns a new instance of DOM.



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# File 'lib/wedge/dom.rb', line 16

def initialize html
  html = '' if html.nil?
  html = html.to_html if html.is_a? HTML::DSL

  @raw_html = html

  if server?
    @dom = raw_html.is_a?(String) ? HTML[raw_html.dup] : raw_html
  else
    @dom = raw_html.is_a?(String) ? Element[raw_html.dup] : raw_html
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object

This allows you to use all the nokogiri or opal jquery methods if a global one isn’t set



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# File 'lib/wedge/dom.rb', line 296

def method_missing method, *args, &block
  # respond_to?(symbol, include_all=false)
  if dom.respond_to? method, true
    dom.send method, *args, &block
  else
    super
  end
end

Instance Attribute Details

#dom ⇒ Object

Returns the value of attribute dom.



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# File 'lib/wedge/dom.rb', line 5

def dom
  @dom
end

#raw_html ⇒ Object

Returns the value of attribute raw_html.



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# File 'lib/wedge/dom.rb', line 5

def raw_html
  @raw_html
end

Class Method Details

.[](html) ⇒ Object

Shortcut for creating dom

Parameters:



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# File 'lib/wedge/dom.rb', line 11

def [] html
  new html
end

Instance Method Details

#<<(d) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 82

def << d
  if node.is_a? Nokogiri::XML::NodeSet
    node.each { |n| n << d }
  else
    node << d
  end
end

#[]=(key, value) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 74

def []= key, value
  if node.is_a? Nokogiri::XML::NodeSet
    node.each { |n| n[key] = value }
  else
    node[key] = value
  end
end

#add_class(classes) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 201

def add_class classes
  classes = (classes || '').split ' ' unless classes.is_a? Array
  if node.is_a? Nokogiri::XML::NodeSet
    node.each do |n|
      new_classes =  ((n.attr('class') || '').split(' ') << classes).uniq.join(' ')
      n['class'] = new_classes
    end
  else
    new_classes =  ((node.attr('class') || '').split(' ') << classes).uniq.join(' ')
    node['class'] = new_classes
  end
end

#append(d) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 116

def append d
  if node.is_a? Nokogiri::XML::NodeSet
    node.each do |n|
      if nn = n.children.last
        nn.add_next_sibling d
      else
        n << d
      end
    end
  else
    if n = node.children.last
      n.add_next_sibling d
    else
      node.content << d
    end
  end
end

#attr(key, value = false) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 224

def attr key, value = false
  if value
    value = value.join ' ' if value.is_a? Array
    if node.is_a? Nokogiri::XML::NodeSet
      node.each { |n| n[key] = value }
    else
      node[key] = value
    end
  else
    super key
  end
end

#data(key = false, value = false) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 175

def data key = false, value = false
  d = Hash[node.xpath("@*[starts-with(name(), 'data-')]").map{|a| [a.name, a.value]}]

  if !key
    d
  elsif key && !value
    d[key]
  else
    key = "data-#{key}"

    if node.is_a? Nokogiri::XML::NodeSet
      node.each { |n| n[key] = value }
    else
      node[key] = value
    end
  end
end

#find(string, &block) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 29

def find string, &block
  if client?
    node = Wedge::DOM.new dom.find(string)
  elsif server?
    node = Wedge::DOM.new dom.css(string)
  end

  if block_given?
    node.each_with_index do |n, i|
      block.call Wedge::DOM.new(n), i
    end
  end

  node
end

#hide ⇒ Object 



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# File 'lib/wedge/dom.rb', line 134

def hide
  if node.is_a? Nokogiri::XML::NodeSet
    node.each do |n|
      DOM.new(n).style 'display', 'none'
    end
  else
    node.style 'display', 'none'
  end

  node
end

#html(content = false) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 275

def html content = false
  # if the value is nil nokogiri will not update the dom
  content = '' if content.nil?

  if !content
    if server?
      node.inner_html
    else
      node ? node.html : dom.html
    end
  else
    self.html = content
  end
end

#html=(content) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 238

def html= content
  if server?
    # if the value is nil nokogiri will not update the dom
    content = '' if content.nil?

    if node.is_a? Nokogiri::XML::NodeSet
      node.each { |n| n.inner_html = content }
    else
      node.inner_html = content
    end
  else
    content = content.dom if content.is_a? Wedge::DOM
    node.html content
  end

  node
rescue
  binding.pry
end

#node ⇒ Object 



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# File 'lib/wedge/dom.rb', line 290

def node
  @node || dom
end

#prepend(d) ⇒ Object

def prepend d

if n = node.children.first
  n.add_previous_sibling d
else
  node << d
end

end



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# File 'lib/wedge/dom.rb', line 98

def prepend d
  if node.is_a? Nokogiri::XML::NodeSet
    node.each do |n|
      if nn = n.children.first
        nn.add_previous_sibling d
      else
        n << d
      end
    end
  else
    if n = node.children.first
      n.add_previous_sibling d
    else
      node << d
    end
  end
end

#remove_class(classes) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 214

def remove_class classes
  classes = (classes || '').split ' ' unless classes.is_a? Array

  if node.is_a? Nokogiri::XML::NodeSet
    node.each { |n| n['class'] = (n.attr('class') || '').split(' ').reject { |c| classes.include? c }.join(' ') }
  else
    node['class'] = (node.attr('class') || '').split(' ').reject { |c| classes.include? c }.join(' ')
  end
end

#replace_with(*args) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 66

def replace_with *args
  if node.is_a? Nokogiri::XML::NodeSet
    node.each { |n| n.replace(*args) }
  else
    node.replace(*args)
  end
end

#style(*args) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 146

def style *args
  style_object = DOM.new(node).styles

  if args.length == 1
    style_object[args.first]
  else
    style_object[args.first] = args.last
    node['style'] = style_object.map { |k, v| [k, v].join(': ') }.join('; ')
  end
end

#styles ⇒ Object 



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# File 'lib/wedge/dom.rb', line 157

def styles
  style_array = node['style'].to_s.
    split(';').
    reject { |s| s.strip.empty? }.
    map do |s|
      parts = s.split(':', 2)
      return nil if parts.nil?
      return nil if parts.length != 2
      return nil if parts.any? { |s| s.nil? }
      [parts[0].strip, parts[1].strip]
    end.
    reject { |s| s.empty? }
  style_object = {}
  style_array.each { |key, value| style_object[key] = value }

  style_object
end

#to_html ⇒ Object 



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# File 'lib/wedge/dom.rb', line 268

def to_html
  @dom ||= Wedge::DOM.new '<div>'
  el = dom.first
  Wedge::DOM.new('<div>').append(el).html
end

#val(value) ⇒ Object 



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# File 'lib/wedge/dom.rb', line 193

def val value
  if node.is_a? Nokogiri::XML::NodeSet
    node.each { |n| n.content = value }
  else
    node.content = value
  end
end