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Contents
module Parade
module Renderers
#
# 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.
#
class ColumnsRenderer
attr_accessor :css_class
attr_accessor :html_element
attr_accessor :segments
#
# @example Creating a 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)
#
def initialize(params={})
params.each {|k,v| send("#{k}=",v) if respond_to? "#{k}=" }
end
def render(content)
html = Nokogiri::XML.fragment(content)
html.css(".content.#{css_class}").each do |slide|
columns = []
slop = []
chunks = slide.children.chunk {|child| child.name == html_element }
slide.children = ""
slide['class'] += " container_#{segments}"
current_column = slide
column_count = chunks.find_all {|is_column,contents| is_column }.count
chunks.each do |is_column,contents|
if is_column
slide.add_child current_column unless current_column == slide
current_column = Nokogiri::XML::Node.new('div',html)
current_column['class'] = "grid_#{ segments / column_count }"
end
contents.each {|content| current_column.add_child content }
end
slide.add_child current_column
end
html.to_s
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems