Class: Tubby::Renderer

Inherits:
Object
  • Object
show all
Defined in:
lib/tubby.rb

Constant Summary collapse

TAGS = 
%w[
  a abbr acronym address applet article aside audio b basefont bdi bdo big
  blockquote body button canvas caption center cite code colgroup datalist
  dd del details dfn dir div dl dt em fieldset figcaption figure font footer
  form frame frameset h1 h2 h3 h4 h5 h6 head header hgroup html i iframe ins
  kbd label legend li map mark math menu meter nav
  object ol optgroup option output p pre progress q rp rt ruby s samp
  section select small span strike strong style sub summary sup svg table
  tbody td textarea tfoot th thead time title tr tt u ul var video xmp
]
SELF_CLOSING_TAGS = 
%w[
  base link meta hr br wbr img embed param source track area col input
  keygen command
]

Instance Method Summary collapse

Constructor Details

#initialize(target) ⇒ Renderer

Returns a new instance of Renderer.



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# File 'lib/tubby.rb', line 31

def initialize(target)
  @target = target
end

Instance Method Details

#<<(obj) ⇒ Object 



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# File 'lib/tubby.rb', line 35

def <<(obj)
  obj = obj.to_tubby if obj.respond_to?(:to_tubby)
  if obj.is_a?(Tubby::Template)
    obj.render_with(self)
  elsif obj.respond_to?(:to_html)
    @target << obj.to_html
  elsif obj.respond_to?(:html_safe?) && obj.html_safe?
    @target << obj
  else
    @target << CGI.escape_html(obj.to_s)
  end
  self
end

#__attrs!(attrs) ⇒ Object 



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# File 'lib/tubby.rb', line 57

def __attrs!(attrs)
  if attrs.key?(:data) && attrs[:data].is_a?(Hash)
    # Flatten present `data: {k1: v1, k2: v2}` attribute, inserting `data-k1: v1, data-k2: v2`
    # into exact place where the attribute was
    attrs = Hash[attrs.flat_map do |key, value|
      if key == :data && value.is_a?(Hash)
        value.map { |k, v| [:"data-#{k}", v] }
      else
        [[key, value]]
      end
    end]
  end

  attrs.each do |key, value|
    if value.is_a?(Array)
      value = value.compact.join(" ")
    end

    if value
      key = key.to_s.tr("_", "-")

      if value == true
        @target << " #{key}"
      else
        value = CGI.escape_html(value.to_s)
        @target << " #{key}=\"#{value}\""
      end
    end
  end
end

#doctype! ⇒ Object 



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# File 'lib/tubby.rb', line 53

def doctype!
  @target << "<!DOCTYPE html>"
end

#raw!(text) ⇒ Object 



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# File 'lib/tubby.rb', line 49

def raw!(text)
  @target << text.to_s
end

#script(content = nil, **attrs) ⇒ Object 



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# File 'lib/tubby.rb', line 135

def script(content = nil, **attrs)
  @target << "<script"
  __attrs!(attrs)
  @target << ">"
  if content
    if content =~ /<(!--|script|\/script)/
      raise "script tags can not contain #$&"
    end
    @target << content
  end
  @target << "</script>"
end

#self_closing_tag!(name, **attrs) ⇒ Object 



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# File 'lib/tubby.rb', line 97

def self_closing_tag!(name, **attrs)
  @target << "<" << name
  __attrs!(attrs)
  @target << ">"
end

#tag!(name, content = nil, **attrs) ⇒ Object 



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# File 'lib/tubby.rb', line 88

def tag!(name, content = nil, **attrs)
  @target << "<" << name
  __attrs!(attrs)
  @target << ">"
  self << content if content
  yield if block_given?
  @target << "</" << name << ">"
end