Class: RailsInfo::CodePresenter

Inherits:
Presenter show all
Defined in:
app/presenters/rails_info/code_presenter.rb

Instance Method Summary collapse

Methods inherited from Presenter

#subject=

Constructor Details

#initialize(subject, options = {}) ⇒ CodePresenter

Returns a new instance of CodePresenter.



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# File 'app/presenters/rails_info/code_presenter.rb', line 2

def initialize(subject, options = {})
  super(subject, options)
  
  @code = options[:text]
  @line_number = options[:number]
  @line_numbers = options[:line_numbers]
  @highlighted_line_numbers = options[:highlighted_line_numbers] || []
  @highlighted_line_numbers = @highlighted_line_numbers.is_a?(Array) ? @highlighted_line_numbers : [@highlighted_line_numbers]
  @highlighted_number_name = options[:highlighted_number_name]
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class RailsInfo::Presenter

Instance Method Details

#table ⇒ Object 



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# File 'app/presenters/rails_info/code_presenter.rb', line 13

def table
  outer_html = ''
  
  unless @line_numbers.include?(@line_number)
    outer_html = content_tag(:p) do 
      content_tag :strong do 
        raw(
          "Line number #{@line_number.inspect} is either an empty line or not included (anymore).<br/>" +
          "So highlighting the nearest line."
        )
      end
    end
  end
  
  outer_html + content_tag(:table, cellspacing: 0, cellpadding: 0) do
    html, visible_line_number = '', 1
    
    @line_numbers.each do |line_number|
      html += content_tag :tr do
        tr_html = ''
        
        if @highlighted_line_numbers.include?(visible_line_number)
          #line_number_link = link_to line_number.to_s, "#top", name: @highlighted_number_name.parameterize
          tr_html = content_tag :td, line_number, class: 'hll'
        else
          tr_html = content_tag :td, line_number
        end
        
        if line_number == @line_numbers.first
          options = @highlighted_line_numbers ? {hl_lines: @highlighted_line_numbers } : {}
          
          # 1) This Ruby wrapped Python code can cause Ruby segmentation faults. 
          #    If you can abandon syntax highlighting deactivate 1) and use 2) instead
          code = ::Pygments.highlight(@code, lexer: 'ruby', options: options) rescue @code.gsub(/\n/, '<br/>').gsub(' ', '&nbsp;')

          # 2) 
          # code = @code.gsub(/\n/, '<br/>').gsub(' ', '&nbsp;')

          tr_html += content_tag :td, raw(code), rowspan: @line_numbers.length
        end
        
        raw tr_html
      end  
      
      visible_line_number += 1
    end  
    
    raw html
  end
end