Class: Jekyll::SWFObject::SWFObjectTag

Inherits:
Liquid::Block
  • Object
show all
Defined in:
lib/jekyll-swfobject.rb

Constant Summary collapse

@@ATTRIBUTES =

constants

%w(
  id align name styleclass
)
@@PARAMETERS = 
%w(
  play loop menu quality scale salign wmode bgcolor base
  swliveconnect devicefont allowscriptaccess seamlesstabbing allowfullscreen allownetworking
)
@@DEFAULTS = 
{
    :content_id => 'flashcontent',
    :width => '100%',
    :height => '100%',
    :version => '10.0',
    :flashvars => ''
}

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tag_name, markup, tokens) ⇒ SWFObjectTag

Returns a new instance of SWFObjectTag.



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# File 'lib/jekyll-swfobject.rb', line 49

def initialize(tag_name, markup, tokens)
  super

  @config = {}
  # set defaults
  override_config(@@DEFAULTS)

  # override configuration with values defined within _config.yml
  if Jekyll.configuration({}).has_key?('swfobject')
    config = Jekyll.configuration({})['swfobject']
    override_config(config)
  end

  params = markup.split

  # first argument (required) is url of swf
  @swf_url = params.shift.strip

  if params.size > 0
    # override configuration with parameters defined within {% swfobject pathToSWF %}
    config = {} # reset local config
    params.each do |param|
      param = param.gsub /\s+/, '' # remove whitespaces
      key, value = param.split(':',2) # split first occurrence of ':' only
      config[key.to_sym] = value
    end
    override_config(config)
  end

end

Class Method Details

.DEFAULTS ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 45

def self.DEFAULTS
  return @@DEFAULTS
end

Instance Method Details

#override_config(config) ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 80

def override_config(config)
  config.each{ |key,value| @config[key] = value }
end

#remove_last_comma(content) ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 164

def remove_last_comma(content)
  content.gsub(/,?$/, '')
end

#render(context) ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 84

def render(context)
  content = super

  # raise an error if the swfobject block has no content
  if content.strip.size <= 0
    raise ScriptError.new("swfobject tag can not be empty")
  end

  <<-HTML.gsub /^\s+/, '' # remove whitespaces from heredocs
  <div id="#{@config[:content_id]}-wrapper" style="width: #{@config[:width]}; height: #{@config[:height]}">
    <div id="#{@config[:content_id]}" style="width: 100%; height:100%">#{content}</div>
  </div>
  <script type="text/javascript">
    //  <![CDATA[
    #{render_flashvars()}
  #{render_params()}
  #{render_attributes()}
    swfobject.embedSWF(
      '#{@swf_url}',
      '#{@config[:content_id]}',
      '100%',
      '100%',
      '#{@config[:version]}',
      #{render_express_install_url()},
      flashvars,
      params,
      attributes,
      #{render_callback_function()}
    );
    // ]]>
  </script>
  HTML
end

#render_attributes ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 129

def render_attributes
  result = 'var attributes = {'
  @config.each do |key, value|
    if @@ATTRIBUTES.include?(key.to_s)
      result += "#{key}:'#{value}',"
    end
  end
  result = remove_last_comma(result)
  result += '};'
end

#render_callback_function ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 160

def render_callback_function
  @config[:callback_function] ? "#{@config[:callback_function]}" : 'null'
end

#render_express_install_url ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 156

def render_express_install_url
  @config[:express_install_url] ? "'#{@config[:express_install_url]}'" : 'null'
end

#render_flashvars ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 140

def render_flashvars
  result = 'var flashvars = {'

  if !@config[:flashvars].nil?
    vars = @config[:flashvars].split('&')
    vars.each do |var|
      key_value = var.split('=',2) # split first occurrence of '=' only
      key = key_value.first
      value = key_value.last
      result += "#{key}:'#{value}',"
    end
    result = remove_last_comma(result)
  end
  result += '};'
end

#render_params ⇒ Object 



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# File 'lib/jekyll-swfobject.rb', line 118

def render_params
  result = 'var params = {'
  @config.each do |key, value|
    if @@PARAMETERS.include?(key.to_s)
      result += "#{key}:'#{value}',"
    end
  end
  result = remove_last_comma(result)
  result += '};'
end