Class: Parade::Renderers::ColumnsRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/parade/renderers/columns_renderer.rb

Overview

With the given HTML content, search for the CSS class for the HTML element and when found generate columns for each element found. The size of the columns is a division of the number of segments.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params = {}) ⇒ ColumnsRenderer

Creation of a column renderer that will look for slides with the class ‘columns’, and create columns out of all h2 elements found, dividing them across 12 elements.

ColumnsRenderer.new(:css_class => 'columns',:html_element => "h2",:segments => 12)

Examples:

Creating a ColumnsRenderer



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# File 'lib/parade/renderers/columns_renderer.rb', line 24

def initialize(params={})
  params.each {|k,v| send("#{k}=",v) if respond_to? "#{k}=" }
end

Instance Attribute Details

#css_class ⇒ Object

Returns the value of attribute css_class.



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# File 'lib/parade/renderers/columns_renderer.rb', line 11

def css_class
  @css_class
end

#html_element ⇒ Object

Returns the value of attribute html_element.



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# File 'lib/parade/renderers/columns_renderer.rb', line 12

def html_element
  @html_element
end

#segments ⇒ Object

Returns the value of attribute segments.



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# File 'lib/parade/renderers/columns_renderer.rb', line 13

def segments
  @segments
end

Instance Method Details

#render(content) ⇒ Object 



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# File 'lib/parade/renderers/columns_renderer.rb', line 28

def render(content)
  html = Nokogiri::XML.fragment(content)

  #for each element with the class 'content.css_class'
  html.css(".content.#{css_class}").each do |slide|

    #chunk and mark nods that are html_element as columns
    chunks = chunk_children_by_element(slide, html_element)

    #remove the current children
    slide.children = ""

    #append the container grid count..size.. thing
    slide['class'] += " container_#{segments}"
    current_column = slide

    #get the number of elements that are html_element
    column_count = chunks.find_all {|is_column, contents| is_column }.count

    chunks.each do |is_column,contents|

      if is_column
        current_column = new_column_div(html, column_count)
      end

      contents.each {|content| current_column.add_child content }
      slide.add_child current_column unless current_column == slide

    end

  end

  html.to_s

end