Class: Webby::Filters::Slides

Inherits:
Object
  • Object
show all
Defined in:
lib/webby/filters/slides.rb

Overview

The Slides filter is used to generate an S5 presentation from HTML input text. The input HTML is scanned for <h1> tags and slide divs are inserted before each <h1> tag found.

When the HTML is rendered into the presentation layout, the result is an S5 presentation – provided that the layout includes the appropriate S5 javascript and CSS files.

Constant Summary collapse

START_SLIDE = 
%{<div class="slide">#$/}
END_SLIDE = 
%{</div>#$/#$/}

Instance Method Summary collapse

Constructor Details

#initialize(str) ⇒ Slides

call-seq:

Slides.new( html )

Creates a new slides filter that will operate on the given html string.



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# File 'lib/webby/filters/slides.rb', line 23

def initialize( str )
  @str = str
  @open = false
end

Instance Method Details

#filter ⇒ Object

call-seq:

filter    => html

Process the original html document passed to the filter when it was created. The document will be scanned for H1 heading tags and slide divs will be inserted into the page before each H1 tag that is found.



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# File 'lib/webby/filters/slides.rb', line 35

def filter
  result = []

  @str.split(%r/\<h1/i).each do |slide|
    next if slide.strip.empty?
    result << START_SLIDE << '<h1' << slide << END_SLIDE
  end

  result.join
end